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chromium / chromium / src / 5312f6f029e562f0b341ae5ad282d6244b697b0f / . / third_party / WebKit / Source / web / WebViewImpl.cpp
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/*
* Copyright (C) 2011, 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "web/WebViewImpl.h"
#include "core/CSSValueKeywords.h"
#include "core/HTMLNames.h"
#include "core/InputTypeNames.h"
#include "core/clipboard/DataObject.h"
#include "core/dom/Document.h"
#include "core/dom/Fullscreen.h"
#include "core/dom/LayoutTreeBuilderTraversal.h"
#include "core/dom/Text.h"
#include "core/editing/EditingUtilities.h"
#include "core/editing/Editor.h"
#include "core/editing/FrameSelection.h"
#include "core/editing/InputMethodController.h"
#include "core/editing/iterators/TextIterator.h"
#include "core/editing/markers/DocumentMarkerController.h"
#include "core/editing/serializers/HTMLInterchange.h"
#include "core/editing/serializers/Serialization.h"
#include "core/events/KeyboardEvent.h"
#include "core/events/UIEventWithKeyState.h"
#include "core/events/WheelEvent.h"
#include "core/fetch/UniqueIdentifier.h"
#include "core/frame/EventHandlerRegistry.h"
#include "core/frame/FrameHost.h"
#include "core/frame/FrameView.h"
#include "core/frame/LocalFrame.h"
#include "core/frame/PageScaleConstraintsSet.h"
#include "core/frame/RemoteFrame.h"
#include "core/frame/Settings.h"
#include "core/frame/SmartClip.h"
#include "core/frame/TopControls.h"
#include "core/frame/VisualViewport.h"
#include "core/html/HTMLInputElement.h"
#include "core/html/HTMLMediaElement.h"
#include "core/html/HTMLPlugInElement.h"
#include "core/html/HTMLTextAreaElement.h"
#include "core/input/EventHandler.h"
#include "core/input/TouchActionUtil.h"
#include "core/layout/LayoutPart.h"
#include "core/layout/LayoutView.h"
#include "core/layout/TextAutosizer.h"
#include "core/layout/compositing/DeprecatedPaintLayerCompositor.h"
#include "core/loader/DocumentLoader.h"
#include "core/loader/FrameLoadRequest.h"
#include "core/loader/FrameLoader.h"
#include "core/loader/FrameLoaderClient.h"
#include "core/page/ContextMenuController.h"
#include "core/page/ContextMenuProvider.h"
#include "core/page/DragController.h"
#include "core/page/DragData.h"
#include "core/page/DragSession.h"
#include "core/page/FocusController.h"
#include "core/page/FrameTree.h"
#include "core/page/Page.h"
#include "core/page/PagePopupClient.h"
#include "core/page/PointerLockController.h"
#include "core/page/ScopedPageLoadDeferrer.h"
#include "core/page/TouchDisambiguation.h"
#include "core/paint/DeprecatedPaintLayer.h"
#include "core/timing/DOMWindowPerformance.h"
#include "core/timing/Performance.h"
#include "modules/accessibility/AXObject.h"
#include "modules/accessibility/AXObjectCacheImpl.h"
#include "modules/credentialmanager/CredentialManagerClient.h"
#include "modules/encryptedmedia/MediaKeysController.h"
#include "modules/storage/StorageNamespaceController.h"
#include "modules/webgl/WebGLRenderingContext.h"
#include "platform/ContextMenu.h"
#include "platform/ContextMenuItem.h"
#include "platform/Cursor.h"
#include "platform/KeyboardCodes.h"
#include "platform/Logging.h"
#include "platform/NotImplemented.h"
#include "platform/PlatformGestureEvent.h"
#include "platform/PlatformKeyboardEvent.h"
#include "platform/PlatformMouseEvent.h"
#include "platform/PlatformWheelEvent.h"
#include "platform/RuntimeEnabledFeatures.h"
#include "platform/TraceEvent.h"
#include "platform/UserGestureIndicator.h"
#include "platform/exported/WebActiveGestureAnimation.h"
#include "platform/fonts/FontCache.h"
#include "platform/graphics/Color.h"
#include "platform/graphics/FirstPaintInvalidationTracking.h"
#include "platform/graphics/Image.h"
#include "platform/graphics/ImageBuffer.h"
#include "platform/graphics/gpu/DrawingBuffer.h"
#include "platform/scroll/ScrollbarTheme.h"
#include "platform/weborigin/SchemeRegistry.h"
#include "public/platform/Platform.h"
#include "public/platform/WebCompositeAndReadbackAsyncCallback.h"
#include "public/platform/WebCompositorSupport.h"
#include "public/platform/WebDragData.h"
#include "public/platform/WebFloatPoint.h"
#include "public/platform/WebGestureCurve.h"
#include "public/platform/WebImage.h"
#include "public/platform/WebLayerTreeView.h"
#include "public/platform/WebURLRequest.h"
#include "public/platform/WebVector.h"
#include "public/web/WebAXObject.h"
#include "public/web/WebActiveWheelFlingParameters.h"
#include "public/web/WebAutofillClient.h"
#include "public/web/WebBeginFrameArgs.h"
#include "public/web/WebElement.h"
#include "public/web/WebFrame.h"
#include "public/web/WebFrameClient.h"
#include "public/web/WebGraphicsContext.h"
#include "public/web/WebHitTestResult.h"
#include "public/web/WebInputElement.h"
#include "public/web/WebMediaPlayerAction.h"
#include "public/web/WebNode.h"
#include "public/web/WebPlugin.h"
#include "public/web/WebPluginAction.h"
#include "public/web/WebRange.h"
#include "public/web/WebSelection.h"
#include "public/web/WebTextInputInfo.h"
#include "public/web/WebViewClient.h"
#include "public/web/WebWindowFeatures.h"
#include "web/CompositionUnderlineVectorBuilder.h"
#include "web/ContextFeaturesClientImpl.h"
#include "web/DatabaseClientImpl.h"
#include "web/DevToolsEmulator.h"
#include "web/FullscreenController.h"
#include "web/GraphicsLayerFactoryChromium.h"
#include "web/InspectorOverlayImpl.h"
#include "web/LinkHighlightImpl.h"
#include "web/PageOverlay.h"
#include "web/PrerendererClientImpl.h"
#include "web/ResizeViewportAnchor.h"
#include "web/RotationViewportAnchor.h"
#include "web/SpeechRecognitionClientProxy.h"
#include "web/StorageQuotaClientImpl.h"
#include "web/ValidationMessageClientImpl.h"
#include "web/ViewportAnchor.h"
#include "web/WebDevToolsAgentImpl.h"
#include "web/WebInputEventConversion.h"
#include "web/WebLocalFrameImpl.h"
#include "web/WebPagePopupImpl.h"
#include "web/WebPluginContainerImpl.h"
#include "web/WebRemoteFrameImpl.h"
#include "web/WebSettingsImpl.h"
#include "web/WorkerGlobalScopeProxyProviderImpl.h"
#include "wtf/CurrentTime.h"
#include "wtf/RefPtr.h"
#include "wtf/TemporaryChange.h"
#if USE(DEFAULT_RENDER_THEME)
#include "core/layout/LayoutThemeDefault.h"
#endif
// Get rid of WTF's pow define so we can use std::pow.
#undef pow
#include <cmath> // for std::pow
// The following constants control parameters for automated scaling of webpages
// (such as due to a double tap gesture or find in page etc.). These are
// experimentally determined.
static const int touchPointPadding = 32;
static const int nonUserInitiatedPointPadding = 11;
static const float minScaleDifference = 0.01f;
static const float doubleTapZoomContentDefaultMargin = 5;
static const float doubleTapZoomContentMinimumMargin = 2;
static const double doubleTapZoomAnimationDurationInSeconds = 0.25;
static const float doubleTapZoomAlreadyLegibleRatio = 1.2f;
static const double multipleTargetsZoomAnimationDurationInSeconds = 0.25;
static const double findInPageAnimationDurationInSeconds = 0;
// Constants for viewport anchoring on resize.
static const float viewportAnchorCoordX = 0.5f;
static const float viewportAnchorCoordY = 0;
// Constants for zooming in on a focused text field.
static const double scrollAndScaleAnimationDurationInSeconds = 0.2;
static const int minReadableCaretHeight = 16;
static const int minReadableCaretHeightForTextArea = 13;
static const float minScaleChangeToTriggerZoom = 1.5f;
static const float leftBoxRatio = 0.3f;
static const int caretPadding = 10;
namespace blink {
// Change the text zoom level by kTextSizeMultiplierRatio each time the user
// zooms text in or out (ie., change by 20%). The min and max values limit
// text zoom to half and 3x the original text size. These three values match
// those in Apple's port in WebKit/WebKit/WebView/WebView.mm
const double WebView::textSizeMultiplierRatio = 1.2;
const double WebView::minTextSizeMultiplier = 0.5;
const double WebView::maxTextSizeMultiplier = 3.0;
// Used to defer all page activity in cases where the embedder wishes to run
// a nested event loop. Using a stack enables nesting of message loop invocations.
static WillBeHeapVector<RawPtrWillBeMember<ScopedPageLoadDeferrer>>& pageLoadDeferrerStack()
{
DEFINE_STATIC_LOCAL(OwnPtrWillBePersistent<WillBeHeapVector<RawPtrWillBeMember<ScopedPageLoadDeferrer>>>, deferrerStack, (adoptPtrWillBeNoop(new WillBeHeapVector<RawPtrWillBeMember<ScopedPageLoadDeferrer>>())));
return *deferrerStack;
}
// Ensure that the WebDragOperation enum values stay in sync with the original
// DragOperation constants.
#define STATIC_ASSERT_MATCHING_ENUM(coreName) \
static_assert(int(coreName) == int(Web##coreName), "DragOperation and WebDragOperation enum mismatch: " #coreName)
STATIC_ASSERT_MATCHING_ENUM(DragOperationNone);
STATIC_ASSERT_MATCHING_ENUM(DragOperationCopy);
STATIC_ASSERT_MATCHING_ENUM(DragOperationLink);
STATIC_ASSERT_MATCHING_ENUM(DragOperationGeneric);
STATIC_ASSERT_MATCHING_ENUM(DragOperationPrivate);
STATIC_ASSERT_MATCHING_ENUM(DragOperationMove);
STATIC_ASSERT_MATCHING_ENUM(DragOperationDelete);
STATIC_ASSERT_MATCHING_ENUM(DragOperationEvery);
static bool shouldUseExternalPopupMenus = false;
namespace {
class UserGestureNotifier {
public:
// If a UserGestureIndicator is created for a user gesture since the last
// page load and *userGestureObserved is false, the UserGestureNotifier
// will notify the client and set *userGestureObserved to true.
UserGestureNotifier(WebAutofillClient*, bool* userGestureObserved);
~UserGestureNotifier();
private:
WebAutofillClient* const m_client;
bool* const m_userGestureObserved;
};
UserGestureNotifier::UserGestureNotifier(WebAutofillClient* client, bool* userGestureObserved)
: m_client(client)
, m_userGestureObserved(userGestureObserved)
{
ASSERT(m_userGestureObserved);
}
UserGestureNotifier::~UserGestureNotifier()
{
if (!*m_userGestureObserved && UserGestureIndicator::processedUserGestureSinceLoad()) {
*m_userGestureObserved = true;
if (m_client)
m_client->firstUserGestureObserved();
}
}
class EmptyEventListener final : public EventListener {
public:
static PassRefPtrWillBeRawPtr<EmptyEventListener> create()
{
return adoptRefWillBeNoop(new EmptyEventListener());
}
bool operator==(const EventListener& other) override
{
return this == &other;
}
private:
EmptyEventListener()
: EventListener(CPPEventListenerType)
{
}
void handleEvent(ExecutionContext* executionContext, Event*) override
{
}
};
class ColorOverlay final : public PageOverlay::Delegate {
public:
explicit ColorOverlay(WebColor color)
: m_color(color)
{
}
virtual ~ColorOverlay()
{
}
private:
void paintPageOverlay(WebGraphicsContext* context, const WebSize& size)
{
WebFloatRect rect(0, 0, size.width, size.height);
WebCanvas* canvas = context->beginDrawing(rect);
SkPaint paint;
paint.setColor(m_color);
paint.setStyle(SkPaint::kFill_Style);
canvas->drawRectCoords(0, 0, size.width, size.height, paint);
context->endDrawing();
}
WebColor m_color;
};
} // namespace
// WebView ----------------------------------------------------------------
WebView* WebView::create(WebViewClient* client)
{
// Pass the WebViewImpl's self-reference to the caller.
return WebViewImpl::create(client);
}
WebViewImpl* WebViewImpl::create(WebViewClient* client)
{
// Pass the WebViewImpl's self-reference to the caller.
return adoptRef(new WebViewImpl(client)).leakRef();
}
void WebView::setUseExternalPopupMenus(bool useExternalPopupMenus)
{
shouldUseExternalPopupMenus = useExternalPopupMenus;
}
void WebView::updateVisitedLinkState(unsigned long long linkHash)
{
Page::visitedStateChanged(linkHash);
}
void WebView::resetVisitedLinkState()
{
Page::allVisitedStateChanged();
}
void WebView::willEnterModalLoop()
{
pageLoadDeferrerStack().append(new ScopedPageLoadDeferrer());
}
void WebView::didExitModalLoop()
{
ASSERT(pageLoadDeferrerStack().size());
ScopedPageLoadDeferrer* deferrer = pageLoadDeferrerStack().last();
#if ENABLE(OILPAN)
deferrer->dispose();
#else
delete deferrer;
#endif
pageLoadDeferrerStack().removeLast();
}
void WebViewImpl::setMainFrame(WebFrame* frame)
{
if (frame->isWebLocalFrame()) {
WebLocalFrameImpl* localFrame = toWebLocalFrameImpl(frame);
localFrame->initializeCoreFrame(&page()->frameHost(), 0, nullAtom, nullAtom);
// Composited WebViews want repaints outside the frame visible rect.
localFrame->frame()->view()->setClipsRepaints(!m_layerTreeView);
} else {
toWebRemoteFrameImpl(frame)->initializeCoreFrame(&page()->frameHost(), 0, nullAtom);
}
}
void WebViewImpl::setCredentialManagerClient(WebCredentialManagerClient* webCredentialManagerClient)
{
ASSERT(m_page);
provideCredentialManagerClientTo(*m_page, new CredentialManagerClient(webCredentialManagerClient));
}
void WebViewImpl::setPrerendererClient(WebPrerendererClient* prerendererClient)
{
ASSERT(m_page);
providePrerendererClientTo(*m_page, new PrerendererClientImpl(prerendererClient));
}
void WebViewImpl::setSpellCheckClient(WebSpellCheckClient* spellCheckClient)
{
m_spellCheckClient = spellCheckClient;
}
// static
HashSet<WebViewImpl*>& WebViewImpl::allInstances()
{
DEFINE_STATIC_LOCAL(HashSet<WebViewImpl*>, allInstances, ());
return allInstances;
}
WebViewImpl::WebViewImpl(WebViewClient* client)
: m_client(client)
, m_spellCheckClient(0)
, m_chromeClientImpl(ChromeClientImpl::create(this))
, m_contextMenuClientImpl(this)
, m_dragClientImpl(this)
, m_editorClientImpl(this)
, m_spellCheckerClientImpl(this)
, m_storageClientImpl(this)
, m_shouldAutoResize(false)
, m_zoomLevel(0)
, m_minimumZoomLevel(zoomFactorToZoomLevel(minTextSizeMultiplier))
, m_maximumZoomLevel(zoomFactorToZoomLevel(maxTextSizeMultiplier))
, m_maximumLegibleScale(1)
, m_doubleTapZoomPageScaleFactor(0)
, m_doubleTapZoomPending(false)
, m_enableFakePageScaleAnimationForTesting(false)
, m_fakePageScaleAnimationPageScaleFactor(0)
, m_fakePageScaleAnimationUseAnchor(false)
, m_contextMenuAllowed(false)
, m_doingDragAndDrop(false)
, m_ignoreInputEvents(false)
, m_compositorDeviceScaleFactorOverride(0)
, m_rootLayerScale(1)
, m_suppressNextKeypressEvent(false)
, m_imeAcceptEvents(true)
, m_operationsAllowed(WebDragOperationNone)
, m_dragOperation(WebDragOperationNone)
, m_devToolsEmulator(nullptr)
, m_isTransparent(false)
, m_tabsToLinks(false)
, m_layerTreeView(0)
, m_rootLayer(0)
, m_rootGraphicsLayer(0)
, m_rootTransformLayer(0)
, m_graphicsLayerFactory(adoptPtr(new GraphicsLayerFactoryChromium(this)))
, m_matchesHeuristicsForGpuRasterization(false)
, m_recreatingGraphicsContext(false)
, m_flingModifier(0)
, m_flingSourceDevice(false)
, m_fullscreenController(FullscreenController::create(this))
, m_showFPSCounter(false)
, m_baseBackgroundColor(Color::white)
, m_backgroundColorOverride(Color::transparent)
, m_zoomFactorOverride(0)
, m_userGestureObserved(false)
, m_shouldDispatchFirstVisuallyNonEmptyLayout(false)
, m_displayMode(WebDisplayModeBrowser)
, m_elasticOverscroll(FloatSize())
{
Page::PageClients pageClients;
pageClients.chromeClient = m_chromeClientImpl.get();
pageClients.contextMenuClient = &m_contextMenuClientImpl;
pageClients.editorClient = &m_editorClientImpl;
pageClients.dragClient = &m_dragClientImpl;
pageClients.spellCheckerClient = &m_spellCheckerClientImpl;
m_page = adoptPtrWillBeNoop(new Page(pageClients));
MediaKeysController::provideMediaKeysTo(*m_page, &m_mediaKeysClientImpl);
provideSpeechRecognitionTo(*m_page, SpeechRecognitionClientProxy::create(client ? client->speechRecognizer() : 0));
provideContextFeaturesTo(*m_page, ContextFeaturesClientImpl::create());
provideDatabaseClientTo(*m_page, DatabaseClientImpl::create());
provideStorageQuotaClientTo(*m_page, StorageQuotaClientImpl::create());
m_page->setValidationMessageClient(ValidationMessageClientImpl::create(*this));
provideWorkerGlobalScopeProxyProviderTo(*m_page, WorkerGlobalScopeProxyProviderImpl::create());
StorageNamespaceController::provideStorageNamespaceTo(*m_page, &m_storageClientImpl);
m_page->makeOrdinary();
if (m_client) {
setDeviceScaleFactor(m_client->screenInfo().deviceScaleFactor);
setVisibilityState(m_client->visibilityState(), true);
}
initializeLayerTreeView();
m_devToolsEmulator = DevToolsEmulator::create(this);
allInstances().add(this);
}
WebViewImpl::~WebViewImpl()
{
ASSERT(!m_page);
}
WebDevToolsAgentImpl* WebViewImpl::mainFrameDevToolsAgentImpl()
{
WebLocalFrameImpl* mainFrame = mainFrameImpl();
return mainFrame ? mainFrame->devToolsAgentImpl() : nullptr;
}
InspectorOverlay* WebViewImpl::inspectorOverlay()
{
if (!m_inspectorOverlay)
m_inspectorOverlay = InspectorOverlayImpl::create(this);
return m_inspectorOverlay.get();
}
WebLocalFrameImpl* WebViewImpl::mainFrameImpl()
{
return m_page && m_page->mainFrame() && m_page->mainFrame()->isLocalFrame() ? WebLocalFrameImpl::fromFrame(m_page->deprecatedLocalMainFrame()) : 0;
}
bool WebViewImpl::tabKeyCyclesThroughElements() const
{
ASSERT(m_page);
return m_page->tabKeyCyclesThroughElements();
}
void WebViewImpl::setTabKeyCyclesThroughElements(bool value)
{
if (m_page)
m_page->setTabKeyCyclesThroughElements(value);
}
void WebViewImpl::handleMouseLeave(LocalFrame& mainFrame, const WebMouseEvent& event)
{
m_client->setMouseOverURL(WebURL());
PageWidgetEventHandler::handleMouseLeave(mainFrame, event);
}
void WebViewImpl::handleMouseDown(LocalFrame& mainFrame, const WebMouseEvent& event)
{
// If there is a popup open, close it as the user is clicking on the page
// (outside of the popup). We also save it so we can prevent a click on an
// element from immediately reopening the same popup.
RefPtr<WebPagePopupImpl> pagePopup;
if (event.button == WebMouseEvent::ButtonLeft) {
pagePopup = m_pagePopup;
hidePopups();
ASSERT(!m_pagePopup);
}
m_lastMouseDownPoint = WebPoint(event.x, event.y);
// Take capture on a mouse down on a plugin so we can send it mouse events.
// If the hit node is a plugin but a scrollbar is over it don't start mouse
// capture because it will interfere with the scrollbar receiving events.
IntPoint point(event.x, event.y);
if (event.button == WebMouseEvent::ButtonLeft && m_page->mainFrame()->isLocalFrame()) {
point = m_page->deprecatedLocalMainFrame()->view()->rootFrameToContents(point);
HitTestResult result(m_page->deprecatedLocalMainFrame()->eventHandler().hitTestResultAtPoint(point));
result.setToShadowHostIfInUserAgentShadowRoot();
Node* hitNode = result.innerNodeOrImageMapImage();
if (!result.scrollbar() && hitNode && hitNode->layoutObject() && hitNode->layoutObject()->isEmbeddedObject()) {
m_mouseCaptureNode = hitNode;
TRACE_EVENT_ASYNC_BEGIN0("input", "capturing mouse", this);
}
}
PageWidgetEventHandler::handleMouseDown(mainFrame, event);
if (event.button == WebMouseEvent::ButtonLeft && m_mouseCaptureNode)
m_mouseCaptureGestureToken = mainFrame.eventHandler().takeLastMouseDownGestureToken();
if (m_pagePopup && pagePopup && m_pagePopup->hasSamePopupClient(pagePopup.get())) {
// That click triggered a page popup that is the same as the one we just closed.
// It needs to be closed.
cancelPagePopup();
}
// Dispatch the contextmenu event regardless of if the click was swallowed.
if (!page()->settings().showContextMenuOnMouseUp()) {
#if OS(MACOSX)
if (event.button == WebMouseEvent::ButtonRight
|| (event.button == WebMouseEvent::ButtonLeft
&& event.modifiers & WebMouseEvent::ControlKey))
mouseContextMenu(event);
#else
if (event.button == WebMouseEvent::ButtonRight)
mouseContextMenu(event);
#endif
}
}
void WebViewImpl::setDisplayMode(WebDisplayMode mode)
{
m_displayMode = mode;
if (!mainFrameImpl() || !mainFrameImpl()->frameView())
return;
mainFrameImpl()->frameView()->setDisplayMode(mode);
}
void WebViewImpl::mouseContextMenu(const WebMouseEvent& event)
{
if (!mainFrameImpl() || !mainFrameImpl()->frameView())
return;
m_page->contextMenuController().clearContextMenu();
PlatformMouseEventBuilder pme(mainFrameImpl()->frameView(), event);
// Find the right target frame. See issue 1186900.
HitTestResult result = hitTestResultForRootFramePos(pme.position());
Frame* targetFrame;
if (result.innerNodeOrImageMapImage())
targetFrame = result.innerNodeOrImageMapImage()->document().frame();
else
targetFrame = m_page->focusController().focusedOrMainFrame();
if (!targetFrame->isLocalFrame())
return;
LocalFrame* targetLocalFrame = toLocalFrame(targetFrame);
#if OS(WIN)
targetLocalFrame->view()->setCursor(pointerCursor());
#endif
m_contextMenuAllowed = true;
targetLocalFrame->eventHandler().sendContextMenuEvent(pme, nullptr);
m_contextMenuAllowed = false;
// Actually showing the context menu is handled by the ContextMenuClient
// implementation...
}
void WebViewImpl::handleMouseUp(LocalFrame& mainFrame, const WebMouseEvent& event)
{
PageWidgetEventHandler::handleMouseUp(mainFrame, event);
if (page()->settings().showContextMenuOnMouseUp()) {
// Dispatch the contextmenu event regardless of if the click was swallowed.
// On Mac/Linux, we handle it on mouse down, not up.
if (event.button == WebMouseEvent::ButtonRight)
mouseContextMenu(event);
}
}
bool WebViewImpl::handleMouseWheel(LocalFrame& mainFrame, const WebMouseWheelEvent& event)
{
hidePopups();
return PageWidgetEventHandler::handleMouseWheel(mainFrame, event);
}
bool WebViewImpl::scrollBy(const WebFloatSize& delta, const WebFloatSize& velocity)
{
if (m_flingSourceDevice == WebGestureDeviceTouchpad) {
WebMouseWheelEvent syntheticWheel;
const float tickDivisor = WheelEvent::TickMultiplier;
syntheticWheel.deltaX = delta.width;
syntheticWheel.deltaY = delta.height;
syntheticWheel.wheelTicksX = delta.width / tickDivisor;
syntheticWheel.wheelTicksY = delta.height / tickDivisor;
syntheticWheel.hasPreciseScrollingDeltas = true;
syntheticWheel.x = m_positionOnFlingStart.x;
syntheticWheel.y = m_positionOnFlingStart.y;
syntheticWheel.globalX = m_globalPositionOnFlingStart.x;
syntheticWheel.globalY = m_globalPositionOnFlingStart.y;
syntheticWheel.modifiers = m_flingModifier;
if (m_page && m_page->mainFrame() && m_page->mainFrame()->isLocalFrame() && m_page->deprecatedLocalMainFrame()->view())
return handleMouseWheel(*m_page->deprecatedLocalMainFrame(), syntheticWheel);
} else {
WebGestureEvent syntheticGestureEvent;
syntheticGestureEvent.type = WebInputEvent::GestureScrollUpdate;
syntheticGestureEvent.data.scrollUpdate.preventPropagation = true;
syntheticGestureEvent.data.scrollUpdate.deltaX = delta.width;
syntheticGestureEvent.data.scrollUpdate.deltaY = delta.height;
syntheticGestureEvent.data.scrollUpdate.velocityX = velocity.width;
syntheticGestureEvent.data.scrollUpdate.velocityY = velocity.height;
syntheticGestureEvent.x = m_positionOnFlingStart.x;
syntheticGestureEvent.y = m_positionOnFlingStart.y;
syntheticGestureEvent.globalX = m_globalPositionOnFlingStart.x;
syntheticGestureEvent.globalY = m_globalPositionOnFlingStart.y;
syntheticGestureEvent.modifiers = m_flingModifier;
syntheticGestureEvent.sourceDevice = WebGestureDeviceTouchscreen;
syntheticGestureEvent.data.scrollUpdate.inertial = true;
if (m_page && m_page->mainFrame() && m_page->mainFrame()->isLocalFrame() && m_page->deprecatedLocalMainFrame()->view())
return handleGestureEvent(syntheticGestureEvent);
}
return false;
}
bool WebViewImpl::handleGestureEvent(const WebGestureEvent& event)
{
if (!m_client)
return false;
bool eventSwallowed = false;
bool eventCancelled = false; // for disambiguation
// Special handling for slow-path fling gestures.
switch (event.type) {
case WebInputEvent::GestureFlingStart: {
if (mainFrameImpl()->frame()->eventHandler().isScrollbarHandlingGestures())
break;
endActiveFlingAnimation();
m_client->cancelScheduledContentIntents();
m_positionOnFlingStart = WebPoint(event.x, event.y);
m_globalPositionOnFlingStart = WebPoint(event.globalX, event.globalY);
m_flingModifier = event.modifiers;
m_flingSourceDevice = event.sourceDevice;
OwnPtr<WebGestureCurve> flingCurve = adoptPtr(Platform::current()->createFlingAnimationCurve(event.sourceDevice, WebFloatPoint(event.data.flingStart.velocityX, event.data.flingStart.velocityY), WebSize()));
ASSERT(flingCurve);
m_gestureAnimation = WebActiveGestureAnimation::createAtAnimationStart(flingCurve.release(), this);
scheduleAnimation();
eventSwallowed = true;
m_client->didHandleGestureEvent(event, eventCancelled);
return eventSwallowed;
}
case WebInputEvent::GestureFlingCancel:
if (endActiveFlingAnimation())
eventSwallowed = true;
m_client->didHandleGestureEvent(event, eventCancelled);
return eventSwallowed;
default:
break;
}
PlatformGestureEventBuilder platformEvent(mainFrameImpl()->frameView(), event);
// Special handling for double tap and scroll events as we don't want to
// hit test for them.
switch (event.type) {
case WebInputEvent::GestureDoubleTap:
if (m_webSettings->doubleTapToZoomEnabled() && minimumPageScaleFactor() != maximumPageScaleFactor()) {
m_client->cancelScheduledContentIntents();
animateDoubleTapZoom(platformEvent.position());
}
// GestureDoubleTap is currently only used by Android for zooming. For WebCore,
// GestureTap with tap count = 2 is used instead. So we drop GestureDoubleTap here.
eventSwallowed = true;
m_client->didHandleGestureEvent(event, eventCancelled);
return eventSwallowed;
case WebInputEvent::GestureScrollBegin:
m_client->cancelScheduledContentIntents();
case WebInputEvent::GestureScrollEnd:
case WebInputEvent::GestureScrollUpdate:
case WebInputEvent::GestureFlingStart:
// Scrolling-related gesture events invoke EventHandler recursively for each frame down
// the chain, doing a single-frame hit-test per frame. This matches handleWheelEvent.
// Perhaps we could simplify things by rewriting scroll handling to work inner frame
// out, and then unify with other gesture events.
eventSwallowed = mainFrameImpl()->frame()->eventHandler().handleGestureScrollEvent(platformEvent);
m_client->didHandleGestureEvent(event, eventCancelled);
return eventSwallowed;
case WebInputEvent::GesturePinchBegin:
case WebInputEvent::GesturePinchEnd:
case WebInputEvent::GesturePinchUpdate:
return false;
default:
break;
}
// Hit test across all frames and do touch adjustment as necessary for the event type.
GestureEventWithHitTestResults targetedEvent =
m_page->deprecatedLocalMainFrame()->eventHandler().targetGestureEvent(platformEvent);
// Handle link highlighting outside the main switch to avoid getting lost in the
// complicated set of cases handled below.
switch (event.type) {
case WebInputEvent::GestureShowPress:
// Queue a highlight animation, then hand off to regular handler.
enableTapHighlightAtPoint(targetedEvent);
break;
case WebInputEvent::GestureTapCancel:
case WebInputEvent::GestureTap:
case WebInputEvent::GestureLongPress:
for (size_t i = 0; i < m_linkHighlights.size(); ++i)
m_linkHighlights[i]->startHighlightAnimationIfNeeded();
break;
default:
break;
}
switch (event.type) {
case WebInputEvent::GestureTap: {
m_client->cancelScheduledContentIntents();
if (detectContentOnTouch(targetedEvent)) {
eventSwallowed = true;
break;
}
// Don't trigger a disambiguation popup on sites designed for mobile devices.
// Instead, assume that the page has been designed with big enough buttons and links.
// Don't trigger a disambiguation popup when screencasting, since it's implemented outside of
// compositor pipeline and is not being screencasted itself. This leads to bad user experience.
WebDevToolsAgentImpl* devTools = mainFrameDevToolsAgentImpl();
bool screencastEnabled = devTools && devTools->screencastEnabled();
if (event.data.tap.width > 0 && !shouldDisableDesktopWorkarounds() && !screencastEnabled) {
IntRect boundingBox(page()->frameHost().visualViewport().viewportToRootFrame(IntRect(
event.x - event.data.tap.width / 2,
event.y - event.data.tap.height / 2,
event.data.tap.width,
event.data.tap.height)));
// FIXME: We shouldn't pass details of the VisualViewport offset to render_view_impl.
WebSize visualViewportOffset = flooredIntSize(page()->frameHost().visualViewport().location());
if (m_webSettings->multiTargetTapNotificationEnabled()) {
Vector<IntRect> goodTargets;
WillBeHeapVector<RawPtrWillBeMember<Node>> highlightNodes;
findGoodTouchTargets(boundingBox, mainFrameImpl()->frame(), goodTargets, highlightNodes);
// FIXME: replace touch adjustment code when numberOfGoodTargets == 1?
// Single candidate case is currently handled by: https://bugs.webkit.org/show_bug.cgi?id=85101
if (goodTargets.size() >= 2 && m_client
&& m_client->didTapMultipleTargets(visualViewportOffset, boundingBox, goodTargets)) {
enableTapHighlights(highlightNodes);
for (size_t i = 0; i < m_linkHighlights.size(); ++i)
m_linkHighlights[i]->startHighlightAnimationIfNeeded();
eventSwallowed = true;
eventCancelled = true;
break;
}
}
}
eventSwallowed = mainFrameImpl()->frame()->eventHandler().handleGestureEvent(targetedEvent);
break;
}
case WebInputEvent::GestureTwoFingerTap:
case WebInputEvent::GestureLongPress:
case WebInputEvent::GestureLongTap: {
if (!mainFrameImpl() || !mainFrameImpl()->frameView())
break;
m_client->cancelScheduledContentIntents();
m_page->contextMenuController().clearContextMenu();
m_contextMenuAllowed = true;
eventSwallowed = mainFrameImpl()->frame()->eventHandler().handleGestureEvent(targetedEvent);
m_contextMenuAllowed = false;
break;
}
case WebInputEvent::GestureShowPress:
m_client->cancelScheduledContentIntents();
case WebInputEvent::GestureTapDown:
case WebInputEvent::GestureTapCancel:
case WebInputEvent::GestureTapUnconfirmed: {
eventSwallowed = mainFrameImpl()->frame()->eventHandler().handleGestureEvent(targetedEvent);
break;
}
default:
ASSERT_NOT_REACHED();
}
m_client->didHandleGestureEvent(event, eventCancelled);
return eventSwallowed;
}
bool WebViewImpl::handleSyntheticWheelFromTouchpadPinchEvent(const WebGestureEvent& pinchEvent)
{
ASSERT(pinchEvent.type == WebInputEvent::GesturePinchUpdate);
// Touchscreen pinch events should not reach Blink.
ASSERT(pinchEvent.sourceDevice == WebGestureDeviceTouchpad);
// For pinch gesture events, match typical trackpad behavior on Windows by sending fake
// wheel events with the ctrl modifier set when we see trackpad pinch gestures. Ideally
// we'd someday get a platform 'pinch' event and send that instead.
WebMouseWheelEvent wheelEvent;
wheelEvent.type = WebInputEvent::MouseWheel;
wheelEvent.timeStampSeconds = pinchEvent.timeStampSeconds;
wheelEvent.windowX = wheelEvent.x = pinchEvent.x;
wheelEvent.windowY = wheelEvent.y = pinchEvent.y;
wheelEvent.globalX = pinchEvent.globalX;
wheelEvent.globalY = pinchEvent.globalY;
wheelEvent.modifiers =
pinchEvent.modifiers | WebInputEvent::ControlKey;
wheelEvent.deltaX = 0;
// The function to convert scales to deltaY values is designed to be
// compatible with websites existing use of wheel events, and with existing
// Windows trackpad behavior. In particular, we want:
// - deltas should accumulate via addition: f(s1*s2)==f(s1)+f(s2)
// - deltas should invert via negation: f(1/s) == -f(s)
// - zoom in should be positive: f(s) > 0 iff s > 1
// - magnitude roughly matches wheels: f(2) > 25 && f(2) < 100
// - a formula that's relatively easy to use from JavaScript
// Note that 'wheel' event deltaY values have their sign inverted. So to
// convert a wheel deltaY back to a scale use Math.exp(-deltaY/100).
ASSERT(pinchEvent.data.pinchUpdate.scale > 0);
wheelEvent.deltaY = 100.0f * log(pinchEvent.data.pinchUpdate.scale);
wheelEvent.hasPreciseScrollingDeltas = true;
wheelEvent.wheelTicksX = 0;
wheelEvent.wheelTicksY =
pinchEvent.data.pinchUpdate.scale > 1 ? 1 : -1;
wheelEvent.canScroll = false;
return handleInputEvent(wheelEvent);
}
void WebViewImpl::transferActiveWheelFlingAnimation(const WebActiveWheelFlingParameters& parameters)
{
TRACE_EVENT0("blink", "WebViewImpl::transferActiveWheelFlingAnimation");
ASSERT(!m_gestureAnimation);
m_positionOnFlingStart = parameters.point;
m_globalPositionOnFlingStart = parameters.globalPoint;
m_flingModifier = parameters.modifiers;
OwnPtr<WebGestureCurve> curve = adoptPtr(Platform::current()->createFlingAnimationCurve(parameters.sourceDevice, WebFloatPoint(parameters.delta), parameters.cumulativeScroll));
ASSERT(curve);
m_gestureAnimation = WebActiveGestureAnimation::createWithTimeOffset(curve.release(), this, parameters.startTime);
scheduleAnimation();
}
bool WebViewImpl::endActiveFlingAnimation()
{
if (m_gestureAnimation) {
m_gestureAnimation.clear();
if (m_layerTreeView)
m_layerTreeView->didStopFlinging();
return true;
}
return false;
}
bool WebViewImpl::startPageScaleAnimation(const IntPoint& targetPosition, bool useAnchor, float newScale, double durationInSeconds)
{
VisualViewport& visualViewport = page()->frameHost().visualViewport();
WebPoint clampedPoint = targetPosition;
if (!useAnchor) {
clampedPoint = visualViewport.clampDocumentOffsetAtScale(targetPosition, newScale);
if (!durationInSeconds) {
setPageScaleFactor(newScale);
FrameView* view = mainFrameImpl()->frameView();
if (view && view->scrollableArea())
view->scrollableArea()->setScrollPosition(DoublePoint(clampedPoint.x, clampedPoint.y), ProgrammaticScroll);
return false;
}
}
if (useAnchor && newScale == pageScaleFactor())
return false;
if (m_enableFakePageScaleAnimationForTesting) {
m_fakePageScaleAnimationTargetPosition = targetPosition;
m_fakePageScaleAnimationUseAnchor = useAnchor;
m_fakePageScaleAnimationPageScaleFactor = newScale;
} else {
if (!m_layerTreeView)
return false;
m_layerTreeView->startPageScaleAnimation(targetPosition, useAnchor, newScale, durationInSeconds);
}
return true;
}
void WebViewImpl::enableFakePageScaleAnimationForTesting(bool enable)
{
m_enableFakePageScaleAnimationForTesting = enable;
}
void WebViewImpl::setShowFPSCounter(bool show)
{
if (m_layerTreeView) {
TRACE_EVENT0("blink", "WebViewImpl::setShowFPSCounter");
m_layerTreeView->setShowFPSCounter(show && !m_devToolsEmulator->deviceEmulationEnabled());
}
m_showFPSCounter = show;
}
void WebViewImpl::setShowPaintRects(bool show)
{
if (m_layerTreeView) {
TRACE_EVENT0("blink", "WebViewImpl::setShowPaintRects");
m_layerTreeView->setShowPaintRects(show);
}
setFirstPaintInvalidationTrackingEnabledForShowPaintRects(show);
}
void WebViewImpl::setShowDebugBorders(bool show)
{
if (m_layerTreeView)
m_layerTreeView->setShowDebugBorders(show);
}
void WebViewImpl::updateShowFPSCounter()
{
if (m_layerTreeView)
m_layerTreeView->setShowFPSCounter(m_showFPSCounter && !m_devToolsEmulator->deviceEmulationEnabled());
}
void WebViewImpl::setShowScrollBottleneckRects(bool show)
{
if (m_layerTreeView)
m_layerTreeView->setShowScrollBottleneckRects(show);
}
void WebViewImpl::acceptLanguagesChanged()
{
if (!page())
return;
page()->acceptLanguagesChanged();
}
bool WebViewImpl::handleKeyEvent(const WebKeyboardEvent& event)
{
ASSERT((event.type == WebInputEvent::RawKeyDown)
|| (event.type == WebInputEvent::KeyDown)
|| (event.type == WebInputEvent::KeyUp));
// Halt an in-progress fling on a key event.
endActiveFlingAnimation();
// Please refer to the comments explaining the m_suppressNextKeypressEvent
// member.
// The m_suppressNextKeypressEvent is set if the KeyDown is handled by
// Webkit. A keyDown event is typically associated with a keyPress(char)
// event and a keyUp event. We reset this flag here as this is a new keyDown
// event.
m_suppressNextKeypressEvent = false;
// If there is a popup, it should be the one processing the event, not the
// page.
if (m_pagePopup) {
m_pagePopup->handleKeyEvent(PlatformKeyboardEventBuilder(event));
// We need to ignore the next Char event after this otherwise pressing
// enter when selecting an item in the popup will go to the page.
if (WebInputEvent::RawKeyDown == event.type)
m_suppressNextKeypressEvent = true;
return true;
}
RefPtrWillBeRawPtr<Frame> focusedFrame = focusedCoreFrame();
if (focusedFrame && focusedFrame->isRemoteFrame()) {
WebRemoteFrameImpl* webFrame = WebRemoteFrameImpl::fromFrame(*toRemoteFrame(focusedFrame.get()));
webFrame->client()->forwardInputEvent(&event);
return true;
}
if (!focusedFrame || !focusedFrame->isLocalFrame())
return false;
LocalFrame* frame = toLocalFrame(focusedFrame.get());
PlatformKeyboardEventBuilder evt(event);
if (frame->eventHandler().keyEvent(evt)) {
if (WebInputEvent::RawKeyDown == event.type) {
// Suppress the next keypress event unless the focused node is a plugin node.
// (Flash needs these keypress events to handle non-US keyboards.)
Element* element = focusedElement();
if (element && element->layoutObject() && element->layoutObject()->isEmbeddedObject()) {
if (event.windowsKeyCode == VKEY_TAB) {
// If the plugin supports keyboard focus then we should not send a tab keypress event.
Widget* widget = toLayoutPart(element->layoutObject())->widget();
if (widget && widget->isPluginContainer()) {
WebPluginContainerImpl* plugin = toWebPluginContainerImpl(widget);
if (plugin && plugin->supportsKeyboardFocus())
m_suppressNextKeypressEvent = true;
}
}
} else {
m_suppressNextKeypressEvent = true;
}
}
return true;
}
#if !OS(MACOSX)
const WebInputEvent::Type contextMenuTriggeringEventType =
#if OS(WIN)
WebInputEvent::KeyUp;
#else
WebInputEvent::RawKeyDown;
#endif
bool isUnmodifiedMenuKey = !(event.modifiers & WebInputEvent::InputModifiers) && event.windowsKeyCode == VKEY_APPS;
bool isShiftF10 = event.modifiers == WebInputEvent::ShiftKey && event.windowsKeyCode == VKEY_F10;
if ((isUnmodifiedMenuKey || isShiftF10) && event.type == contextMenuTriggeringEventType) {
sendContextMenuEvent(event);
return true;
}
#endif // !OS(MACOSX)
return keyEventDefault(event);
}
bool WebViewImpl::handleCharEvent(const WebKeyboardEvent& event)
{
ASSERT(event.type == WebInputEvent::Char);
// Please refer to the comments explaining the m_suppressNextKeypressEvent
// member. The m_suppressNextKeypressEvent is set if the KeyDown is
// handled by Webkit. A keyDown event is typically associated with a
// keyPress(char) event and a keyUp event. We reset this flag here as it
// only applies to the current keyPress event.
bool suppress = m_suppressNextKeypressEvent;
m_suppressNextKeypressEvent = false;
// If there is a popup, it should be the one processing the event, not the
// page.
if (m_pagePopup)
return m_pagePopup->handleKeyEvent(PlatformKeyboardEventBuilder(event));
LocalFrame* frame = toLocalFrame(focusedCoreFrame());
if (!frame)
return suppress;
EventHandler& handler = frame->eventHandler();
PlatformKeyboardEventBuilder evt(event);
if (!evt.isCharacterKey())
return true;
// Accesskeys are triggered by char events and can't be suppressed.
if (handler.handleAccessKey(evt))
return true;
// Safari 3.1 does not pass off windows system key messages (WM_SYSCHAR) to
// the eventHandler::keyEvent. We mimic this behavior on all platforms since
// for now we are converting other platform's key events to windows key
// events.
if (evt.isSystemKey())
return false;
if (!suppress && !handler.keyEvent(evt))
return keyEventDefault(event);
return true;
}
WebRect WebViewImpl::computeBlockBound(const WebPoint& pointInRootFrame, bool ignoreClipping)
{
if (!mainFrameImpl())
return WebRect();
// Use the point-based hit test to find the node.
IntPoint point = mainFrameImpl()->frameView()->rootFrameToContents(IntPoint(pointInRootFrame.x, pointInRootFrame.y));
HitTestRequest::HitTestRequestType hitType = HitTestRequest::ReadOnly | HitTestRequest::Active | (ignoreClipping ? HitTestRequest::IgnoreClipping : 0);
HitTestResult result = mainFrameImpl()->frame()->eventHandler().hitTestResultAtPoint(point, hitType);
result.setToShadowHostIfInUserAgentShadowRoot();
Node* node = result.innerNodeOrImageMapImage();
if (!node)
return WebRect();
// Find the block type node based on the hit node.
// FIXME: This wants to walk composed tree with LayoutTreeBuilderTraversal::parent().
while (node && (!node->layoutObject() || node->layoutObject()->isInline()))
node = LayoutTreeBuilderTraversal::parent(*node);
// Return the bounding box in the root frame's coordinate space.
if (node) {
IntRect pointInRootFrame = node->Node::pixelSnappedBoundingBox();
LocalFrame* frame = node->document().frame();
return frame->view()->contentsToRootFrame(pointInRootFrame);
}
return WebRect();
}
WebRect WebViewImpl::widenRectWithinPageBounds(const WebRect& source, int targetMargin, int minimumMargin)
{
WebSize maxSize;
if (mainFrame())
maxSize = mainFrame()->contentsSize();
IntSize scrollOffset;
if (mainFrame())
scrollOffset = mainFrame()->scrollOffset();
int leftMargin = targetMargin;
int rightMargin = targetMargin;
const int absoluteSourceX = source.x + scrollOffset.width();
if (leftMargin > absoluteSourceX) {
leftMargin = absoluteSourceX;
rightMargin = std::max(leftMargin, minimumMargin);
}
const int maximumRightMargin = maxSize.width - (source.width + absoluteSourceX);
if (rightMargin > maximumRightMargin) {
rightMargin = maximumRightMargin;
leftMargin = std::min(leftMargin, std::max(rightMargin, minimumMargin));
}
const int newWidth = source.width + leftMargin + rightMargin;
const int newX = source.x - leftMargin;
ASSERT(newWidth >= 0);
ASSERT(scrollOffset.width() + newX + newWidth <= maxSize.width);
return WebRect(newX, source.y, newWidth, source.height);
}
float WebViewImpl::maximumLegiblePageScale() const
{
// Pages should be as legible as on desktop when at dpi scale, so no
// need to zoom in further when automatically determining zoom level
// (after double tap, find in page, etc), though the user should still
// be allowed to manually pinch zoom in further if they desire.
if (page())
return m_maximumLegibleScale * page()->settings().accessibilityFontScaleFactor();
return m_maximumLegibleScale;
}
void WebViewImpl::computeScaleAndScrollForBlockRect(const WebPoint& hitPointInRootFrame, const WebRect& blockRectInRootFrame, float padding, float defaultScaleWhenAlreadyLegible, float& scale, WebPoint& scroll)
{
scale = pageScaleFactor();
scroll.x = scroll.y = 0;
WebRect rect = blockRectInRootFrame;
if (!rect.isEmpty()) {
float defaultMargin = doubleTapZoomContentDefaultMargin;
float minimumMargin = doubleTapZoomContentMinimumMargin;
// We want the margins to have the same physical size, which means we
// need to express them in post-scale size. To do that we'd need to know
// the scale we're scaling to, but that depends on the margins. Instead
// we express them as a fraction of the target rectangle: this will be
// correct if we end up fully zooming to it, and won't matter if we
// don't.
rect = widenRectWithinPageBounds(rect,
static_cast<int>(defaultMargin * rect.width / m_size.width),
static_cast<int>(minimumMargin * rect.width / m_size.width));
// Fit block to screen, respecting limits.
scale = static_cast<float>(m_size.width) / rect.width;
scale = std::min(scale, maximumLegiblePageScale());
if (pageScaleFactor() < defaultScaleWhenAlreadyLegible)
scale = std::max(scale, defaultScaleWhenAlreadyLegible);
scale = clampPageScaleFactorToLimits(scale);
}
// FIXME: If this is being called for auto zoom during find in page,
// then if the user manually zooms in it'd be nice to preserve the
// relative increase in zoom they caused (if they zoom out then it's ok
// to zoom them back in again). This isn't compatible with our current
// double-tap zoom strategy (fitting the containing block to the screen)
// though.
float screenWidth = m_size.width / scale;
float screenHeight = m_size.height / scale;
// Scroll to vertically align the block.
if (rect.height < screenHeight) {
// Vertically center short blocks.
rect.y -= 0.5 * (screenHeight - rect.height);
} else {
// Ensure position we're zooming to (+ padding) isn't off the bottom of
// the screen.
rect.y = std::max<float>(rect.y, hitPointInRootFrame.y + padding - screenHeight);
} // Otherwise top align the block.
// Do the same thing for horizontal alignment.
if (rect.width < screenWidth)
rect.x -= 0.5 * (screenWidth - rect.width);
else
rect.x = std::max<float>(rect.x, hitPointInRootFrame.x + padding - screenWidth);
scroll.x = rect.x;
scroll.y = rect.y;
scale = clampPageScaleFactorToLimits(scale);
scroll = mainFrameImpl()->frameView()->rootFrameToContents(scroll);
scroll = page()->frameHost().visualViewport().clampDocumentOffsetAtScale(scroll, scale);
}
static Node* findCursorDefiningAncestor(Node* node, LocalFrame* frame)
{
// Go up the tree to find the node that defines a mouse cursor style
while (node) {
if (node->layoutObject()) {
ECursor cursor = node->layoutObject()->style()->cursor();
if (cursor != CURSOR_AUTO || frame->eventHandler().useHandCursor(node, node->isLink()))
break;
}
node = LayoutTreeBuilderTraversal::parent(*node);
}
return node;
}
static bool showsHandCursor(Node* node, LocalFrame* frame)
{
if (!node || !node->layoutObject())
return false;
ECursor cursor = node->layoutObject()->style()->cursor();
return cursor == CURSOR_POINTER
|| (cursor == CURSOR_AUTO && frame->eventHandler().useHandCursor(node, node->isLink()));
}
Node* WebViewImpl::bestTapNode(const GestureEventWithHitTestResults& targetedTapEvent)
{
TRACE_EVENT0("input", "WebViewImpl::bestTapNode");
if (!m_page || !m_page->mainFrame())
return 0;
Node* bestTouchNode = targetedTapEvent.hitTestResult().innerNode();
if (!bestTouchNode)
return nullptr;
// We might hit something like an image map that has no layoutObject on it
// Walk up the tree until we have a node with an attached layoutObject
while (!bestTouchNode->layoutObject()) {
bestTouchNode = LayoutTreeBuilderTraversal::parent(*bestTouchNode);
if (!bestTouchNode)
return nullptr;
}
// Editable nodes should not be highlighted (e.g., <input>)
if (bestTouchNode->hasEditableStyle())
return nullptr;
Node* cursorDefiningAncestor =
findCursorDefiningAncestor(bestTouchNode, m_page->deprecatedLocalMainFrame());
// We show a highlight on tap only when the current node shows a hand cursor
if (!cursorDefiningAncestor || !showsHandCursor(cursorDefiningAncestor, m_page->deprecatedLocalMainFrame())) {
return 0;
}
// We should pick the largest enclosing node with hand cursor set. We do this by first jumping
// up to cursorDefiningAncestor (which is already known to have hand cursor set). Then we locate
// the next cursor-defining ancestor up in the the tree and repeat the jumps as long as the node
// has hand cursor set.
do {
bestTouchNode = cursorDefiningAncestor;
cursorDefiningAncestor = findCursorDefiningAncestor(LayoutTreeBuilderTraversal::parent(*bestTouchNode),
m_page->deprecatedLocalMainFrame());
} while (cursorDefiningAncestor && showsHandCursor(cursorDefiningAncestor, m_page->deprecatedLocalMainFrame()));
return bestTouchNode;
}
void WebViewImpl::enableTapHighlightAtPoint(const GestureEventWithHitTestResults& targetedTapEvent)
{
Node* touchNode = bestTapNode(targetedTapEvent);
WillBeHeapVector<RawPtrWillBeMember<Node>> highlightNodes;
highlightNodes.append(touchNode);
enableTapHighlights(highlightNodes);
}
void WebViewImpl::enableTapHighlights(WillBeHeapVector<RawPtrWillBeMember<Node>>& highlightNodes)
{
if (highlightNodes.isEmpty())
return;
// Always clear any existing highlight when this is invoked, even if we
// don't get a new target to highlight.
m_linkHighlights.clear();
// LinkHighlight reads out layout and compositing state, so we need to make sure that's all up to date.
layout();
for (size_t i = 0; i < highlightNodes.size(); ++i) {
Node* node = highlightNodes[i];
if (!node || !node->layoutObject())
continue;
Color highlightColor = node->layoutObject()->style()->tapHighlightColor();
// Safari documentation for -webkit-tap-highlight-color says if the specified color has 0 alpha,
// then tap highlighting is disabled.
// http://developer.apple.com/library/safari/#documentation/appleapplications/reference/safaricssref/articles/standardcssproperties.html
if (!highlightColor.alpha())
continue;
m_linkHighlights.append(LinkHighlightImpl::create(node, this));
}
}
void WebViewImpl::animateDoubleTapZoom(const IntPoint& pointInRootFrame)
{
if (!mainFrameImpl())
return;
WebRect blockBounds = computeBlockBound(pointInRootFrame, false);
float scale;
WebPoint scroll;
computeScaleAndScrollForBlockRect(pointInRootFrame, blockBounds, touchPointPadding, minimumPageScaleFactor() * doubleTapZoomAlreadyLegibleRatio, scale, scroll);
bool stillAtPreviousDoubleTapScale = (pageScaleFactor() == m_doubleTapZoomPageScaleFactor
&& m_doubleTapZoomPageScaleFactor != minimumPageScaleFactor())
|| m_doubleTapZoomPending;
bool scaleUnchanged = fabs(pageScaleFactor() - scale) < minScaleDifference;
bool shouldZoomOut = blockBounds.isEmpty() || scaleUnchanged || stillAtPreviousDoubleTapScale;
bool isAnimating;
if (shouldZoomOut) {
scale = minimumPageScaleFactor();
isAnimating = startPageScaleAnimation(mainFrameImpl()->frameView()->rootFrameToContents(pointInRootFrame), true, scale, doubleTapZoomAnimationDurationInSeconds);
} else {
isAnimating = startPageScaleAnimation(scroll, false, scale, doubleTapZoomAnimationDurationInSeconds);
}
if (isAnimating) {
m_doubleTapZoomPageScaleFactor = scale;
m_doubleTapZoomPending = true;
}
}
void WebViewImpl::zoomToFindInPageRect(const WebRect& rectInRootFrame)
{
if (!mainFrameImpl())
return;
WebRect blockBounds = computeBlockBound(WebPoint(rectInRootFrame.x + rectInRootFrame.width / 2, rectInRootFrame.y + rectInRootFrame.height / 2), true);
if (blockBounds.isEmpty()) {
// Keep current scale (no need to scroll as x,y will normally already
// be visible). FIXME: Revisit this if it isn't always true.
return;
}
float scale;
WebPoint scroll;
computeScaleAndScrollForBlockRect(WebPoint(rectInRootFrame.x, rectInRootFrame.y), blockBounds, nonUserInitiatedPointPadding, minimumPageScaleFactor(), scale, scroll);
startPageScaleAnimation(scroll, false, scale, findInPageAnimationDurationInSeconds);
}
bool WebViewImpl::zoomToMultipleTargetsRect(const WebRect& rectInRootFrame)
{
if (!mainFrameImpl())
return false;
float scale;
WebPoint scroll;
computeScaleAndScrollForBlockRect(WebPoint(rectInRootFrame.x, rectInRootFrame.y), rectInRootFrame, nonUserInitiatedPointPadding, minimumPageScaleFactor(), scale, scroll);
if (scale <= pageScaleFactor())
return false;
startPageScaleAnimation(scroll, false, scale, multipleTargetsZoomAnimationDurationInSeconds);
return true;
}
void WebViewImpl::hasTouchEventHandlers(bool hasTouchHandlers)
{
if (m_client)
m_client->hasTouchEventHandlers(hasTouchHandlers);
}
bool WebViewImpl::hasTouchEventHandlersAt(const WebPoint& point)
{
// FIXME: Implement this. Note that the point must be divided by pageScaleFactor.
return true;
}
#if !OS(MACOSX)
// Mac has no way to open a context menu based on a keyboard event.
bool WebViewImpl::sendContextMenuEvent(const WebKeyboardEvent& event)
{
// The contextMenuController() holds onto the last context menu that was
// popped up on the page until a new one is created. We need to clear
// this menu before propagating the event through the DOM so that we can
// detect if we create a new menu for this event, since we won't create
// a new menu if the DOM swallows the event and the defaultEventHandler does
// not run.
page()->contextMenuController().clearContextMenu();
m_contextMenuAllowed = true;
Frame* focusedFrame = page()->focusController().focusedOrMainFrame();
if (!focusedFrame->isLocalFrame())
return false;
bool handled = toLocalFrame(focusedFrame)->eventHandler().sendContextMenuEventForKey(nullptr);
m_contextMenuAllowed = false;
return handled;
}
#endif
void WebViewImpl::showContextMenuAtPoint(float x, float y, PassRefPtrWillBeRawPtr<ContextMenuProvider> menuProvider)
{
if (!page()->mainFrame()->isLocalFrame())
return;
m_contextMenuAllowed = true;
page()->contextMenuController().clearContextMenu();
page()->contextMenuController().showContextMenuAtPoint(page()->deprecatedLocalMainFrame(), x, y, menuProvider);
m_contextMenuAllowed = false;
}
void WebViewImpl::showContextMenuForElement(WebElement element)
{
if (!page())
return;
page()->contextMenuController().clearContextMenu();
m_contextMenuAllowed = true;
if (LocalFrame* focusedFrame = toLocalFrame(page()->focusController().focusedOrMainFrame()))
focusedFrame->eventHandler().sendContextMenuEventForKey(element.unwrap<Element>());
m_contextMenuAllowed = false;
}
bool WebViewImpl::keyEventDefault(const WebKeyboardEvent& event)
{
LocalFrame* frame = toLocalFrame(focusedCoreFrame());
if (!frame)
return false;
switch (event.type) {
case WebInputEvent::Char:
if (event.windowsKeyCode == VKEY_SPACE) {
int keyCode = ((event.modifiers & WebInputEvent::ShiftKey) ? VKEY_PRIOR : VKEY_NEXT);
return scrollViewWithKeyboard(keyCode, event.modifiers);
}
break;
case WebInputEvent::RawKeyDown:
if (event.modifiers == WebInputEvent::ControlKey) {
switch (event.windowsKeyCode) {
#if !OS(MACOSX)
case 'A':
focusedFrame()->executeCommand(WebString::fromUTF8("SelectAll"));
return true;
case VKEY_INSERT:
case 'C':
focusedFrame()->executeCommand(WebString::fromUTF8("Copy"));
return true;
#endif
// Match FF behavior in the sense that Ctrl+home/end are the only Ctrl
// key combinations which affect scrolling. Safari is buggy in the
// sense that it scrolls the page for all Ctrl+scrolling key
// combinations. For e.g. Ctrl+pgup/pgdn/up/down, etc.
case VKEY_HOME:
case VKEY_END:
break;
default:
return false;
}
}
if (!event.isSystemKey && !(event.modifiers & WebInputEvent::ShiftKey))
return scrollViewWithKeyboard(event.windowsKeyCode, event.modifiers);
break;
default:
break;
}
return false;
}
bool WebViewImpl::scrollViewWithKeyboard(int keyCode, int modifiers)
{
ScrollDirectionPhysical scrollDirectionPhysical;
ScrollGranularity scrollGranularity;
#if OS(MACOSX)
// Control-Up/Down should be PageUp/Down on Mac.
if (modifiers & WebMouseEvent::ControlKey) {
if (keyCode == VKEY_UP)
keyCode = VKEY_PRIOR;
else if (keyCode == VKEY_DOWN)
keyCode = VKEY_NEXT;
}
#endif
if (!mapKeyCodeForScroll(keyCode, &scrollDirectionPhysical, &scrollGranularity))
return false;
if (LocalFrame* frame = toLocalFrame(focusedCoreFrame()))
return frame->eventHandler().bubblingScroll(toScrollDirection(scrollDirectionPhysical), scrollGranularity);
return false;
}
bool WebViewImpl::mapKeyCodeForScroll(
int keyCode,
ScrollDirectionPhysical* scrollDirection,
ScrollGranularity* scrollGranularity)
{
switch (keyCode) {
case VKEY_LEFT:
*scrollDirection = ScrollLeft;
*scrollGranularity = ScrollByLine;
break;
case VKEY_RIGHT:
*scrollDirection = ScrollRight;
*scrollGranularity = ScrollByLine;
break;
case VKEY_UP:
*scrollDirection = ScrollUp;
*scrollGranularity = ScrollByLine;
break;
case VKEY_DOWN:
*scrollDirection = ScrollDown;
*scrollGranularity = ScrollByLine;
break;
case VKEY_HOME:
*scrollDirection = ScrollUp;
*scrollGranularity = ScrollByDocument;
break;
case VKEY_END:
*scrollDirection = ScrollDown;
*scrollGranularity = ScrollByDocument;
break;
case VKEY_PRIOR: // page up
*scrollDirection = ScrollUp;
*scrollGranularity = ScrollByPage;
break;
case VKEY_NEXT: // page down
*scrollDirection = ScrollDown;
*scrollGranularity = ScrollByPage;
break;
default:
return false;
}
return true;
}
PagePopup* WebViewImpl::openPagePopup(PagePopupClient* client)
{
ASSERT(client);
if (hasOpenedPopup())
hidePopups();
ASSERT(!m_pagePopup);
WebWidget* popupWidget = m_client->createPopupMenu(WebPopupTypePage);
ASSERT(popupWidget);
m_pagePopup = toWebPagePopupImpl(popupWidget);
if (!m_pagePopup->initialize(this, client)) {
m_pagePopup->closePopup();
m_pagePopup = nullptr;
}
enablePopupMouseWheelEventListener();
return m_pagePopup.get();
}
void WebViewImpl::closePagePopup(PagePopup* popup)
{
ASSERT(popup);
WebPagePopupImpl* popupImpl = toWebPagePopupImpl(popup);
ASSERT(m_pagePopup.get() == popupImpl);
if (m_pagePopup.get() != popupImpl)
return;
m_pagePopup->closePopup();
m_pagePopup = nullptr;
disablePopupMouseWheelEventListener();
}
void WebViewImpl::cancelPagePopup()
{
if (m_pagePopup)
m_pagePopup->cancel();
}
void WebViewImpl::enablePopupMouseWheelEventListener()
{
ASSERT(!m_popupMouseWheelEventListener);
ASSERT(mainFrameImpl()->frame()->document());
// We register an empty event listener, EmptyEventListener, so that mouse
// wheel events get sent to the WebView.
m_popupMouseWheelEventListener = EmptyEventListener::create();
mainFrameImpl()->frame()->document()->addEventListener(EventTypeNames::mousewheel, m_popupMouseWheelEventListener, false);
}
void WebViewImpl::disablePopupMouseWheelEventListener()
{
ASSERT(m_popupMouseWheelEventListener);
ASSERT(mainFrameImpl()->frame()->document());
// Document may have already removed the event listener, for instance, due
// to a navigation, but remove it anyway.
mainFrameImpl()->frame()->document()->removeEventListener(EventTypeNames::mousewheel, m_popupMouseWheelEventListener.release(), false);
}
LocalDOMWindow* WebViewImpl::pagePopupWindow() const
{
return m_pagePopup ? m_pagePopup->window() : nullptr;
}
Frame* WebViewImpl::focusedCoreFrame() const
{
return m_page ? m_page->focusController().focusedOrMainFrame() : 0;
}
WebViewImpl* WebViewImpl::fromPage(Page* page)
{
if (!page)
return 0;
return static_cast<WebViewImpl*>(page->chromeClient().webView());
}
// WebWidget ------------------------------------------------------------------
void WebViewImpl::close()
{
WebDevToolsAgentImpl::webViewImplClosed(this);
ASSERT(allInstances().contains(this));
allInstances().remove(this);
if (m_page) {
// Initiate shutdown for the entire frameset. This will cause a lot of
// notifications to be sent.
m_page->willBeDestroyed();
m_page.clear();
}
// Reset the delegate to prevent notifications being sent as we're being
// deleted.
m_client = nullptr;
deref(); // Balances ref() acquired in WebView::create
}
void WebViewImpl::willStartLiveResize()
{
if (mainFrameImpl() && mainFrameImpl()->frameView())
mainFrameImpl()->frameView()->willStartLiveResize();
}
WebSize WebViewImpl::size()
{
return m_size;
}
void WebViewImpl::resizeVisualViewport(const WebSize& newSize)
{
page()->frameHost().visualViewport().setSize(newSize);
page()->frameHost().visualViewport().clampToBoundaries();
}
void WebViewImpl::resizePinchViewport(const WebSize& newSize)
{
resizeVisualViewport(newSize);
}
void WebViewImpl::performResize()
{
pageScaleConstraintsSet().didChangeViewSize(m_size);
updatePageDefinedViewportConstraints(mainFrameImpl()->frame()->document()->viewportDescription());
updateMainFrameLayoutSize();
page()->frameHost().visualViewport().setSize(m_size);
if (mainFrameImpl()->frameView()) {
if (!mainFrameImpl()->frameView()->needsLayout())
postLayoutResize(mainFrameImpl());
}
// When device emulation is enabled, device size values may change - they are
// usually set equal to the view size. These values are not considered viewport-dependent
// (see MediaQueryExp::isViewportDependent), since they are only viewport-dependent in emulation mode,
// and thus will not be invalidated in |FrameView::performPreLayoutTasks|.
// Therefore we should force explicit media queries invalidation here.
if (m_devToolsEmulator->deviceEmulationEnabled()) {
if (Document* document = mainFrameImpl()->frame()->document()) {
document->styleResolverChanged();
document->mediaQueryAffectingValueChanged();
}
}
}
void WebViewImpl::setTopControlsHeight(float height, bool topControlsShrinkLayoutSize)
{
topControls().setHeight(height, topControlsShrinkLayoutSize);
}
void WebViewImpl::updateTopControlsState(WebTopControlsState constraint, WebTopControlsState current, bool animate)
{
topControls().updateConstraints(constraint);
if (m_layerTreeView)
m_layerTreeView->updateTopControlsState(constraint, current, animate);
}
void WebViewImpl::didUpdateTopControls()
{
if (m_layerTreeView) {
m_layerTreeView->setTopControlsShownRatio(topControls().shownRatio());
m_layerTreeView->setTopControlsHeight(topControls().height(), topControls().shrinkViewport());
}
WebLocalFrameImpl* mainFrame = mainFrameImpl();
if (!mainFrame)
return;
FrameView* view = mainFrame->frameView();
if (!view)
return;
VisualViewport& visualViewport = page()->frameHost().visualViewport();
float topControlsViewportAdjustment = topControls().layoutHeight() - topControls().contentOffset();
visualViewport.setTopControlsAdjustment(topControlsViewportAdjustment);
// Shrink the FrameView by the amount that will maintain the aspect-ratio with the VisualViewport.
view->setTopControlsViewportAdjustment(topControlsViewportAdjustment / minimumPageScaleFactor());
}
TopControls& WebViewImpl::topControls()
{
return page()->frameHost().topControls();
}
void WebViewImpl::resizeViewWhileAnchored(FrameView* view)
{
// FIXME: TextAutosizer does not yet support out-of-process frames.
if (mainFrameImpl() && mainFrameImpl()->frame()->isLocalFrame()) {
// Avoids unnecessary invalidations while various bits of state in TextAutosizer are updated.
TextAutosizer::DeferUpdatePageInfo deferUpdatePageInfo(page());
performResize();
} else {
performResize();
}
m_fullscreenController->updateSize();
// Relayout immediately to recalculate the minimum scale limit for rotation anchoring.
if (view->needsLayout())
view->layout();
}
void WebViewImpl::resize(const WebSize& newSize)
{
if (m_shouldAutoResize || m_size == newSize)
return;
WebLocalFrameImpl* mainFrame = mainFrameImpl();
if (!mainFrame)
return;
FrameView* view = mainFrame->frameView();
if (!view)
return;
VisualViewport& visualViewport = page()->frameHost().visualViewport();
bool isRotation = settings()->mainFrameResizesAreOrientationChanges()
&& m_size.width && contentsSize().width() && newSize.width != m_size.width && !m_fullscreenController->isFullscreen();
m_size = newSize;
FloatSize viewportAnchorCoords(viewportAnchorCoordX, viewportAnchorCoordY);
if (isRotation) {
RotationViewportAnchor anchor(*view, visualViewport, viewportAnchorCoords, pageScaleConstraintsSet());
resizeViewWhileAnchored(view);
} else {
ResizeViewportAnchor anchor(*view, visualViewport);
resizeViewWhileAnchored(view);
}
sendResizeEventAndRepaint();
}
void WebViewImpl::willEndLiveResize()
{
if (mainFrameImpl() && mainFrameImpl()->frameView())
mainFrameImpl()->frameView()->willEndLiveResize();
}
void WebViewImpl::didEnterFullScreen()
{
m_fullscreenController->didEnterFullScreen();
}
void WebViewImpl::didExitFullScreen()
{
m_fullscreenController->didExitFullScreen();
}
void WebViewImpl::beginFrame(const WebBeginFrameArgs& frameTime)
{
TRACE_EVENT0("blink", "WebViewImpl::beginFrame");
WebBeginFrameArgs validFrameTime(frameTime);
if (!validFrameTime.lastFrameTimeMonotonic)
validFrameTime.lastFrameTimeMonotonic = monotonicallyIncreasingTime();
// Create synthetic wheel events as necessary for fling.
if (m_gestureAnimation) {
if (m_gestureAnimation->animate(validFrameTime.lastFrameTimeMonotonic))
scheduleAnimation();
else {
endActiveFlingAnimation();
PlatformGestureEvent endScrollEvent(PlatformEvent::GestureScrollEnd,
m_positionOnFlingStart, m_globalPositionOnFlingStart,
IntSize(), 0, false, false, false, false);
endScrollEvent.setScrollGestureData(0, 0, 0, 0, true, false);
mainFrameImpl()->frame()->eventHandler().handleGestureScrollEnd(endScrollEvent);
}
}
if (!m_page)
return;
// FIXME: This should probably be using the local root?
if (m_page->mainFrame()->isLocalFrame())
PageWidgetDelegate::animate(*m_page, validFrameTime.lastFrameTimeMonotonic, *m_page->deprecatedLocalMainFrame());
}
void WebViewImpl::layout()
{
TRACE_EVENT0("blink", "WebViewImpl::layout");
if (!mainFrameImpl())
return;
PageWidgetDelegate::layout(*m_page, *mainFrameImpl()->frame());
updateLayerTreeBackgroundColor();
if (m_inspectorOverlay)
m_inspectorOverlay->layout();
for (size_t i = 0; i < m_linkHighlights.size(); ++i)
m_linkHighlights[i]->updateGeometry();
if (FrameView* view = mainFrameImpl()->frameView()) {
if (m_shouldDispatchFirstVisuallyNonEmptyLayout && view->isVisuallyNonEmpty()) {
m_shouldDispatchFirstVisuallyNonEmptyLayout = false;
// TODO(esprehn): Move users of this callback to something
// better, the heuristic for "visually non-empty" is bad.
mainFrameImpl()->frame()->loader().client()->dispatchDidFirstVisuallyNonEmptyLayout();
}
}
}
void WebViewImpl::paint(WebCanvas* canvas, const WebRect& rect)
{
// This should only be used when compositing is not being used for this
// WebView, and it is painting into the recording of its parent.
ASSERT(!isAcceleratedCompositingActive());
double paintStart = currentTime();
PageWidgetDelegate::paint(*m_page, canvas, rect, *m_page->deprecatedLocalMainFrame());
double paintEnd = currentTime();
double pixelsPerSec = (rect.width * rect.height) / (paintEnd - paintStart);
Platform::current()->histogramCustomCounts("Renderer4.SoftwarePaintDurationMS", (paintEnd - paintStart) * 1000, 0, 120, 30);
Platform::current()->histogramCustomCounts("Renderer4.SoftwarePaintMegapixPerSecond", pixelsPerSec / 1000000, 10, 210, 30);
}
#if OS(ANDROID)
void WebViewImpl::paintCompositedDeprecated(WebCanvas* canvas, const WebRect& rect)
{
// Note: This method exists on OS(ANDROID) and will hopefully be
// removed once the link disambiguation feature renders using
// the compositor.
ASSERT(isAcceleratedCompositingActive());
PageWidgetDelegate::paintIgnoringCompositing(*m_page, canvas, rect, *m_page->deprecatedLocalMainFrame());
}
#endif
void WebViewImpl::layoutAndPaintAsync(WebLayoutAndPaintAsyncCallback* callback)
{
m_layerTreeView->layoutAndPaintAsync(callback);
}
void WebViewImpl::compositeAndReadbackAsync(WebCompositeAndReadbackAsyncCallback* callback)
{
m_layerTreeView->compositeAndReadbackAsync(callback);
}
void WebViewImpl::themeChanged()
{
if (!page())
return;
if (!page()->mainFrame()->isLocalFrame())
return;
FrameView* view = page()->deprecatedLocalMainFrame()->view();
WebRect damagedRect(0, 0, m_size.width, m_size.height);
view->invalidateRect(damagedRect);
}
void WebViewImpl::enterFullScreenForElement(Element* element)
{
m_fullscreenController->enterFullScreenForElement(element);
}
void WebViewImpl::exitFullScreenForElement(Element* element)
{
m_fullscreenController->exitFullScreenForElement(element);
}
void WebViewImpl::clearCompositedSelection()
{
if (m_layerTreeView)
m_layerTreeView->clearSelection();
}
void WebViewImpl::updateCompositedSelection(const WebSelection& selection)
{
if (m_layerTreeView) {
m_layerTreeView->registerSelection(selection);
// TODO(jdduke): Remove this overload when downstream consumers have been updated, crbug.com/466672.
m_layerTreeView->registerSelection(selection.start(), selection.end());
}
}
bool WebViewImpl::hasHorizontalScrollbar()
{
return mainFrameImpl()->frameView()->horizontalScrollbar();
}
bool WebViewImpl::hasVerticalScrollbar()
{
return mainFrameImpl()->frameView()->verticalScrollbar();
}
const WebInputEvent* WebViewImpl::m_currentInputEvent = nullptr;
// FIXME: autogenerate this kind of code, and use it throughout Blink rather than
// the one-offs for subsets of these values.
static String inputTypeToName(WebInputEvent::Type type)
{
switch (type) {
case WebInputEvent::MouseDown:
return EventTypeNames::mousedown;
case WebInputEvent::MouseUp:
return EventTypeNames::mouseup;
case WebInputEvent::MouseMove:
return EventTypeNames::mousemove;
case WebInputEvent::MouseEnter:
return EventTypeNames::mouseenter;
case WebInputEvent::MouseLeave:
return EventTypeNames::mouseleave;
case WebInputEvent::ContextMenu:
return EventTypeNames::contextmenu;
case WebInputEvent::MouseWheel:
return EventTypeNames::mousewheel;
case WebInputEvent::KeyDown:
return EventTypeNames::keydown;
case WebInputEvent::KeyUp:
return EventTypeNames::keyup;
case WebInputEvent::GestureScrollBegin:
return EventTypeNames::gesturescrollstart;
case WebInputEvent::GestureScrollEnd:
return EventTypeNames::gesturescrollend;
case WebInputEvent::GestureScrollUpdate:
return EventTypeNames::gesturescrollupdate;
case WebInputEvent::GestureTapDown:
return EventTypeNames::gesturetapdown;
case WebInputEvent::GestureShowPress:
return EventTypeNames::gestureshowpress;
case WebInputEvent::GestureTap:
return EventTypeNames::gesturetap;
case WebInputEvent::GestureTapUnconfirmed:
return EventTypeNames::gesturetapunconfirmed;
case WebInputEvent::TouchStart:
return EventTypeNames::touchstart;
case WebInputEvent::TouchMove:
return EventTypeNames::touchmove;
case WebInputEvent::TouchEnd:
return EventTypeNames::touchend;
case WebInputEvent::TouchCancel:
return EventTypeNames::touchcancel;
default:
return String("unknown");
}
}
bool WebViewImpl::handleInputEvent(const WebInputEvent& inputEvent)
{
// TODO(dcheng): The fact that this is getting called when there is no local
// main frame is problematic and probably indicates a bug in the input event
// routing code.
if (!mainFrameImpl())
return false;
WebAutofillClient* autofillClient = mainFrameImpl()->autofillClient();
UserGestureNotifier notifier(autofillClient, &m_userGestureObserved);
// On the first input event since page load, |notifier| instructs the
// autofill client to unblock values of password input fields of any forms
// on the page. There is a single input event, GestureTap, which can both
// be the first event after page load, and cause a form submission. In that
// case, the form submission happens before the autofill client is told
// to unblock the password values, and so the password values are not
// submitted. To avoid that, GestureTap is handled explicitly:
if (inputEvent.type == WebInputEvent::GestureTap && autofillClient) {
m_userGestureObserved = true;
autofillClient->firstUserGestureObserved();
}
TRACE_EVENT1("input", "WebViewImpl::handleInputEvent", "type", inputTypeToName(inputEvent.type).ascii());
// If we've started a drag and drop operation, ignore input events until
// we're done.
if (m_doingDragAndDrop)
return true;
if (m_devToolsEmulator->handleInputEvent(inputEvent))
return true;
WebDevToolsAgentImpl* devTools = mainFrameDevToolsAgentImpl();
if (devTools && devTools->handleInputEvent(inputEvent))
return true;
if (m_inspectorOverlay && m_inspectorOverlay->handleInputEvent(inputEvent))
return true;
// Report the event to be NOT processed by WebKit, so that the browser can handle it appropriately.
if (m_ignoreInputEvents)
return false;
TemporaryChange<const WebInputEvent*> currentEventChange(m_currentInputEvent, &inputEvent);
UIEventWithKeyState::clearNewTabModifierSetFromIsolatedWorld();
if (isPointerLocked() && WebInputEvent::isMouseEventType(inputEvent.type)) {
pointerLockMouseEvent(inputEvent);
return true;
}
if (m_mouseCaptureNode && WebInputEvent::isMouseEventType(inputEvent.type)) {
TRACE_EVENT1("input", "captured mouse event", "type", inputEvent.type);
// Save m_mouseCaptureNode since mouseCaptureLost() will clear it.
RefPtrWillBeRawPtr<Node> node = m_mouseCaptureNode;
// Not all platforms call mouseCaptureLost() directly.
if (inputEvent.type == WebInputEvent::MouseUp)
mouseCaptureLost();
OwnPtr<UserGestureIndicator> gestureIndicator;
AtomicString eventType;
switch (inputEvent.type) {
case WebInputEvent::MouseMove:
eventType = EventTypeNames::mousemove;
break;
case WebInputEvent::MouseLeave:
eventType = EventTypeNames::mouseout;
break;
case WebInputEvent::MouseDown:
eventType = EventTypeNames::mousedown;
gestureIndicator = adoptPtr(new UserGestureIndicator(DefinitelyProcessingNewUserGesture));
m_mouseCaptureGestureToken = gestureIndicator->currentToken();
break;
case WebInputEvent::MouseUp:
eventType = EventTypeNames::mouseup;
gestureIndicator = adoptPtr(new UserGestureIndicator(m_mouseCaptureGestureToken.release()));
break;
default:
ASSERT_NOT_REACHED();
}
node->dispatchMouseEvent(
PlatformMouseEventBuilder(mainFrameImpl()->frameView(), static_cast<const WebMouseEvent&>(inputEvent)),
eventType, static_cast<const WebMouseEvent&>(inputEvent).clickCount);
return true;
}
// FIXME: This should take in the intended frame, not the local frame root.
if (PageWidgetDelegate::handleInputEvent(*this, inputEvent, mainFrameImpl()->frame()))
return true;
// Unhandled touchpad gesture pinch events synthesize mouse wheel events.
if (inputEvent.type == WebInputEvent::GesturePinchUpdate) {
const WebGestureEvent& pinchEvent = static_cast<const WebGestureEvent&>(inputEvent);
// First, synthesize a Windows-like wheel event to send to any handlers that may exist.
if (handleSyntheticWheelFromTouchpadPinchEvent(pinchEvent))
return true;
if (pinchEvent.data.pinchUpdate.zoomDisabled)
return false;
if (page()->frameHost().visualViewport().magnifyScaleAroundAnchor(pinchEvent.data.pinchUpdate.scale, FloatPoint(pinchEvent.x, pinchEvent.y)))
return true;
}
return false;
}
void WebViewImpl::setCursorVisibilityState(bool isVisible)
{
if (m_page)
m_page->setIsCursorVisible(isVisible);
}
void WebViewImpl::mouseCaptureLost()
{
TRACE_EVENT_ASYNC_END0("input", "capturing mouse", this);
m_mouseCaptureNode = nullptr;
}
void WebViewImpl::setFocus(bool enable)
{
m_page->focusController().setFocused(enable);
if (enable) {
m_page->focusController().setActive(true);
RefPtrWillBeRawPtr<Frame> focusedFrame = m_page->focusController().focusedFrame();
if (focusedFrame && focusedFrame->isLocalFrame()) {
LocalFrame* localFrame = toLocalFrame(focusedFrame.get());
Element* element = localFrame->document()->focusedElement();
if (element && localFrame->selection().selection().isNone()) {
// If the selection was cleared while the WebView was not
// focused, then the focus element shows with a focus ring but
// no caret and does respond to keyboard inputs.
if (element->isTextFormControl()) {
element->updateFocusAppearance(true);
} else if (element->isContentEditable()) {
// updateFocusAppearance() selects all the text of
// contentseditable DIVs. So we set the selection explicitly
// instead. Note that this has the side effect of moving the
// caret back to the beginning of the text.
Position position(element, 0);
localFrame->selection().setSelection(VisibleSelection(position, SEL_DEFAULT_AFFINITY));
}
}
}
m_imeAcceptEvents = true;
} else {
hidePopups();
// Clear focus on the currently focused frame if any.
if (!m_page)
return;
LocalFrame* frame = m_page->mainFrame() && m_page->mainFrame()->isLocalFrame()
? m_page->deprecatedLocalMainFrame() : 0;
if (!frame)
return;
RefPtrWillBeRawPtr<Frame> focusedFrame = m_page->focusController().focusedFrame();
if (focusedFrame && focusedFrame->isLocalFrame()) {
// Finish an ongoing composition to delete the composition node.
if (toLocalFrame(focusedFrame.get())->inputMethodController().hasComposition()) {
WebAutofillClient* autofillClient = WebLocalFrameImpl::fromFrame(toLocalFrame(focusedFrame.get()))->autofillClient();
if (autofillClient)
autofillClient->setIgnoreTextChanges(true);
toLocalFrame(focusedFrame.get())->inputMethodController().confirmComposition();
if (autofillClient)
autofillClient->setIgnoreTextChanges(false);
}
m_imeAcceptEvents = false;
}
}
}
bool WebViewImpl::setComposition(
const WebString& text,
const WebVector<WebCompositionUnderline>& underlines,
int selectionStart,
int selectionEnd)
{
LocalFrame* focused = toLocalFrame(focusedCoreFrame());
if (!focused || !m_imeAcceptEvents)
return false;
if (WebPlugin* plugin = focusedPluginIfInputMethodSupported(focused))
return plugin->setComposition(text, underlines, selectionStart, selectionEnd);
// The input focus has been moved to another WebWidget object.
// We should use this |editor| object only to complete the ongoing
// composition.
InputMethodController& inputMethodController = focused->inputMethodController();
if (!focused->editor().canEdit() && !inputMethodController.hasComposition())
return false;
// We should verify the parent node of this IME composition node are
// editable because JavaScript may delete a parent node of the composition
// node. In this case, WebKit crashes while deleting texts from the parent
// node, which doesn't exist any longer.
const EphemeralRange range = inputMethodController.compositionEphemeralRange();
if (range.isNotNull()) {
Node* node = range.startPosition().computeContainerNode();
if (!node || !node->isContentEditable())
return false;
}
// A keypress event is canceled. If an ongoing composition exists, then the
// keydown event should have arisen from a handled key (e.g., backspace).
// In this case we ignore the cancellation and continue; otherwise (no
// ongoing composition) we exit and signal success only for attempts to
// clear the composition.
if (m_suppressNextKeypressEvent && !inputMethodController.hasComposition())
return text.isEmpty();
UserGestureIndicator gestureIndicator(DefinitelyProcessingNewUserGesture);
// When the range of composition underlines overlap with the range between
// selectionStart and selectionEnd, WebKit somehow won't paint the selection
// at all (see InlineTextBox::paint() function in InlineTextBox.cpp).
// But the selection range actually takes effect.
inputMethodController.setComposition(String(text),
CompositionUnderlineVectorBuilder(underlines),
selectionStart, selectionEnd);
return text.isEmpty() || inputMethodController.hasComposition();
}
bool WebViewImpl::confirmComposition()
{
return confirmComposition(DoNotKeepSelection);
}
bool WebViewImpl::confirmComposition(ConfirmCompositionBehavior selectionBehavior)
{
return confirmComposition(WebString(), selectionBehavior);
}
bool WebViewImpl::confirmComposition(const WebString& text)
{
return confirmComposition(text, DoNotKeepSelection);
}
bool WebViewImpl::confirmComposition(const WebString& text, ConfirmCompositionBehavior selectionBehavior)
{
LocalFrame* focused = toLocalFrame(focusedCoreFrame());
if (!focused || !m_imeAcceptEvents)
return false;
if (WebPlugin* plugin = focusedPluginIfInputMethodSupported(focused))
return plugin->confirmComposition(text, selectionBehavior);
return focused->inputMethodController().confirmCompositionOrInsertText(text, selectionBehavior == KeepSelection ? InputMethodController::KeepSelection : InputMethodController::DoNotKeepSelection);
}
bool WebViewImpl::compositionRange(size_t* location, size_t* length)
{
// FIXME: Long term, the focused frame should be a local frame. For now,
// return early to avoid crashes.
Frame* frame = focusedCoreFrame();
if (!frame || frame->isRemoteFrame())
return false;
LocalFrame* focused = toLocalFrame(frame);
if (!focused || !m_imeAcceptEvents)
return false;
const EphemeralRange range = focused->inputMethodController().compositionEphemeralRange();
if (range.isNull())
return false;
Element* editable = focused->selection().rootEditableElementOrDocumentElement();
ASSERT(editable);
PlainTextRange plainTextRange(PlainTextRange::create(*editable, range));
if (plainTextRange.isNull())
return false;
*location = plainTextRange.start();
*length = plainTextRange.length();
return true;
}
WebTextInputInfo WebViewImpl::textInputInfo()
{
WebTextInputInfo info;
Frame* focusedFrame = focusedCoreFrame();
if (!focusedFrame->isLocalFrame())
return info;
LocalFrame* focused = toLocalFrame(focusedFrame);
if (!focused)
return info;
FrameSelection& selection = focused->selection();
Element* element = selection.selection().rootEditableElement();
if (!element)
return info;
info.inputMode = inputModeOfFocusedElement();
info.type = textInputType();
info.flags = textInputFlags();
if (info.type == WebTextInputTypeNone)
return info;
if (!focused->editor().canEdit())
return info;
// Emits an object replacement character for each replaced element so that
// it is exposed to IME and thus could be deleted by IME on android.
info.value = plainText(EphemeralRange::rangeOfContents(*element), TextIteratorEmitsObjectReplacementCharacter);
if (info.value.isEmpty())
return info;
if (RefPtrWillBeRawPtr<Range> range = selection.selection().firstRange()) {
PlainTextRange plainTextRange(PlainTextRange::create(*element, *range.get()));
if (plainTextRange.isNotNull()) {
info.selectionStart = plainTextRange.start();
info.selectionEnd = plainTextRange.end();
}
}
EphemeralRange range = focused->inputMethodController().compositionEphemeralRange();
if (range.isNotNull()) {
PlainTextRange plainTextRange(PlainTextRange::create(*element, range));
if (plainTextRange.isNotNull()) {
info.compositionStart = plainTextRange.start();
info.compositionEnd = plainTextRange.end();
}
}
return info;
}
WebTextInputType WebViewImpl::textInputType()
{
Element* element = focusedElement();
if (!element)
return WebTextInputTypeNone;
if (isHTMLInputElement(*element)) {
HTMLInputElement& input = toHTMLInputElement(*element);
const AtomicString& type = input.type();
if (input.isDisabledOrReadOnly())
return WebTextInputTypeNone;
if (type == InputTypeNames::password)
return WebTextInputTypePassword;
if (type == InputTypeNames::search)
return WebTextInputTypeSearch;
if (type == InputTypeNames::email)
return WebTextInputTypeEmail;
if (type == InputTypeNames::number)
return WebTextInputTypeNumber;
if (type == InputTypeNames::tel)
return WebTextInputTypeTelephone;
if (type == InputTypeNames::url)
return WebTextInputTypeURL;
if (type == InputTypeNames::date)
return WebTextInputTypeDate;
if (type == InputTypeNames::datetime_local)
return WebTextInputTypeDateTimeLocal;
if (type == InputTypeNames::month)
return WebTextInputTypeMonth;
if (type == InputTypeNames::time)
return WebTextInputTypeTime;
if (type == InputTypeNames::week)
return WebTextInputTypeWeek;
if (type == InputTypeNames::text)
return WebTextInputTypeText;
return WebTextInputTypeNone;
}
if (isHTMLTextAreaElement(*element)) {
if (toHTMLTextAreaElement(*element).isDisabledOrReadOnly())
return WebTextInputTypeNone;
return WebTextInputTypeTextArea;
}
#if ENABLE(INPUT_MULTIPLE_FIELDS_UI)
if (element->isHTMLElement()) {
if (toHTMLElement(element)->isDateTimeFieldElement())
return WebTextInputTypeDateTimeField;
}
#endif
if (element->isContentEditable(Node::UserSelectAllIsAlwaysNonEditable))
return WebTextInputTypeContentEditable;
return WebTextInputTypeNone;
}
int WebViewImpl::textInputFlags()
{
Element* element = focusedElement();
if (!element)
return WebTextInputFlagNone;
DEFINE_STATIC_LOCAL(AtomicString, autocompleteString, ("autocomplete", AtomicString::ConstructFromLiteral));
DEFINE_STATIC_LOCAL(AtomicString, autocorrectString, ("autocorrect", AtomicString::ConstructFromLiteral));
int flags = 0;
const AtomicString& autocomplete = element->getAttribute(autocompleteString);
if (autocomplete == "on")
flags |= WebTextInputFlagAutocompleteOn;
else if (autocomplete == "off")
flags |= WebTextInputFlagAutocompleteOff;
const AtomicString& autocorrect = element->getAttribute(autocorrectString);
if (autocorrect == "on")
flags |= WebTextInputFlagAutocorrectOn;
else if (autocorrect == "off")
flags |= WebTextInputFlagAutocorrectOff;
SpellcheckAttributeState spellcheck = element->spellcheckAttributeState();
if (spellcheck == SpellcheckAttributeTrue)
flags |= WebTextInputFlagSpellcheckOn;
else if (spellcheck == SpellcheckAttributeFalse)
flags |= WebTextInputFlagSpellcheckOff;
if (isHTMLTextFormControlElement(element)) {
HTMLTextFormControlElement* formElement = static_cast<HTMLTextFormControlElement*>(element);
if (formElement->supportsAutocapitalize()) {
DEFINE_STATIC_LOCAL(const AtomicString, none, ("none", AtomicString::ConstructFromLiteral));
DEFINE_STATIC_LOCAL(const AtomicString, characters, ("characters", AtomicString::ConstructFromLiteral));
DEFINE_STATIC_LOCAL(const AtomicString, words, ("words", AtomicString::ConstructFromLiteral));
DEFINE_STATIC_LOCAL(const AtomicString, sentences, ("sentences", AtomicString::ConstructFromLiteral));
const AtomicString& autocapitalize = formElement->autocapitalize();
if (autocapitalize == none)
flags |= WebTextInputFlagAutocapitalizeNone;
else if (autocapitalize == characters)
flags |= WebTextInputFlagAutocapitalizeCharacters;
else if (autocapitalize == words)
flags |= WebTextInputFlagAutocapitalizeWords;
else if (autocapitalize == sentences)
flags |= WebTextInputFlagAutocapitalizeSentences;
else
ASSERT_NOT_REACHED();
}
}
return flags;
}
WebString WebViewImpl::inputModeOfFocusedElement()
{
if (!RuntimeEnabledFeatures::inputModeAttributeEnabled())
return WebString();
Element* element = focusedElement();
if (!element)
return WebString();
if (isHTMLInputElement(*element)) {
const HTMLInputElement& input = toHTMLInputElement(*element);
if (input.supportsInputModeAttribute())
return input.fastGetAttribute(HTMLNames::inputmodeAttr).lower();
return WebString();
}
if (isHTMLTextAreaElement(*element)) {
const HTMLTextAreaElement& textarea = toHTMLTextAreaElement(*element);
return textarea.fastGetAttribute(HTMLNames::inputmodeAttr).lower();
}
return WebString();
}
bool WebViewImpl::selectionBounds(WebRect& anchor, WebRect& focus) const
{
const Frame* frame = focusedCoreFrame();
if (!frame || !frame->isLocalFrame())
return false;
const LocalFrame* localFrame = toLocalFrame(frame);
if (!localFrame)
return false;
FrameSelection& selection = localFrame->selection();
if (selection.isCaret()) {
anchor = focus = selection.absoluteCaretBounds();
} else {
const EphemeralRange selectedRange = selection.selection().toNormalizedEphemeralRange();
if (selectedRange.isNull())
return false;
anchor = localFrame->editor().firstRectForRange(EphemeralRange(selectedRange.startPosition()));
focus = localFrame->editor().firstRectForRange(EphemeralRange(selectedRange.endPosition()));
}
anchor = localFrame->view()->contentsToViewport(anchor);
focus = localFrame->view()->contentsToViewport(focus);
if (!selection.selection().isBaseFirst())
std::swap(anchor, focus);
return true;
}
WebPlugin* WebViewImpl::focusedPluginIfInputMethodSupported(LocalFrame* frame)
{
WebPluginContainerImpl* container = WebLocalFrameImpl::pluginContainerFromNode(frame, WebNode(focusedElement()));
if (container && container->supportsInputMethod())
return container->plugin();
return 0;
}
bool WebViewImpl::selectionTextDirection(WebTextDirection& start, WebTextDirection& end) const
{
const Frame* frame = focusedCoreFrame();
if (!frame || frame->isRemoteFrame())
return false;
FrameSelection& selection = toLocalFrame(frame)->selection();
if (selection.selection().toNormalizedEphemeralRange().isNull())
return false;
start = toWebTextDirection(primaryDirectionOf(*selection.start().anchorNode()));
end = toWebTextDirection(primaryDirectionOf(*selection.end().anchorNode()));
return true;
}
bool WebViewImpl::isSelectionAnchorFirst() const
{
const Frame* frame = focusedCoreFrame();
if (!frame || frame->isRemoteFrame())
return false;
return toLocalFrame(frame)->selection().selection().isBaseFirst();
}
WebVector<WebCompositionUnderline> WebViewImpl::compositionUnderlines() const
{
const LocalFrame* focused = toLocalFrame(focusedCoreFrame());
if (!focused)
return WebVector<WebCompositionUnderline>();
const Vector<CompositionUnderline>& underlines = focused->inputMethodController().customCompositionUnderlines();
WebVector<WebCompositionUnderline> results(underlines.size());
for (size_t index = 0; index < underlines.size(); ++index) {
CompositionUnderline underline = underlines[index];
results[index] = WebCompositionUnderline(underline.startOffset, underline.endOffset, static_cast<WebColor>(underline.color.rgb()), underline.thick, static_cast<WebColor>(underline.backgroundColor.rgb()));
}
return results;
}
WebColor WebViewImpl::backgroundColor() const
{
if (isTransparent())
return Color::transparent;
if (!m_page)
return m_baseBackgroundColor;
if (!m_page->mainFrame())
return m_baseBackgroundColor;
if (!m_page->mainFrame()->isLocalFrame())
return m_baseBackgroundColor;
FrameView* view = m_page->deprecatedLocalMainFrame()->view();
return view->documentBackgroundColor().rgb();
}
WebPagePopup* WebViewImpl::pagePopup() const
{
return m_pagePopup.get();
}
bool WebViewImpl::caretOrSelectionRange(size_t* location, size_t* length)
{
const LocalFrame* focused = toLocalFrame(focusedCoreFrame());
if (!focused)
return false;
PlainTextRange selectionOffsets = focused->inputMethodController().getSelectionOffsets();
if (selectionOffsets.isNull())
return false;
*location = selectionOffsets.start();
*length = selectionOffsets.length();
return true;
}
void WebViewImpl::setTextDirection(WebTextDirection direction)
{
// The Editor::setBaseWritingDirection() function checks if we can change
// the text direction of the selected node and updates its DOM "dir"
// attribute and its CSS "direction" property.
// So, we just call the function as Safari does.
const LocalFrame* focused = toLocalFrame(focusedCoreFrame());
if (!focused)
return;
Editor& editor = focused->editor();
if (!editor.canEdit())
return;
switch (direction) {
case WebTextDirectionDefault:
editor.setBaseWritingDirection(NaturalWritingDirection);
break;
case WebTextDirectionLeftToRight:
editor.setBaseWritingDirection(LeftToRightWritingDirection);
break;
case WebTextDirectionRightToLeft:
editor.setBaseWritingDirection(RightToLeftWritingDirection);
break;
default:
notImplemented();
break;
}
}
bool WebViewImpl::isAcceleratedCompositingActive() const
{
return m_rootLayer;
}
void WebViewImpl::willCloseLayerTreeView()
{
if (m_linkHighlightsTimeline) {
detachCompositorAnimationTimeline(m_linkHighlightsTimeline.get());
m_linkHighlightsTimeline.clear();
}
setRootGraphicsLayer(nullptr);
m_layerTreeView = 0;
}
void WebViewImpl::didAcquirePointerLock()
{
if (page())
page()->pointerLockController().didAcquirePointerLock();
}
void WebViewImpl::didNotAcquirePointerLock()
{
if (page())
page()->pointerLockController().didNotAcquirePointerLock();
}
void WebViewImpl::didLosePointerLock()
{
m_pointerLockGestureToken.clear();
if (page())
page()->pointerLockController().didLosePointerLock();
}
void WebViewImpl::didChangeWindowResizerRect()
{
if (mainFrameImpl()->frameView())
mainFrameImpl()->frameView()->windowResizerRectChanged();
}
// WebView --------------------------------------------------------------------
WebSettingsImpl* WebViewImpl::settingsImpl()
{
if (!m_webSettings)
m_webSettings = adoptPtr(new WebSettingsImpl(&m_page->settings(), m_devToolsEmulator.get()));
ASSERT(m_webSettings);
return m_webSettings.get();
}
WebSettings* WebViewImpl::settings()
{
return settingsImpl();
}
WebString WebViewImpl::pageEncoding() const
{
if (!m_page)
return WebString();
if (!m_page->mainFrame()->isLocalFrame())
return WebString();
// FIXME: Is this check needed?
if (!m_page->deprecatedLocalMainFrame()->document()->loader())
return WebString();
return m_page->deprecatedLocalMainFrame()->document()->encodingName();
}
void WebViewImpl::setPageEncoding(const WebString& encodingName)
{
if (!m_page)
return;
// Only change override encoding, don't change default encoding.
// Note that the new encoding must be 0 if it isn't supposed to be set.
AtomicString newEncodingName;
if (!encodingName.isEmpty())
newEncodingName = encodingName;
m_page->frameHost().setOverrideEncoding(newEncodingName);
if (m_page->mainFrame()->isLocalFrame()) {
if (!m_page->deprecatedLocalMainFrame()->loader().currentItem())
return;
FrameLoadRequest request = FrameLoadRequest(
nullptr,
m_page->deprecatedLocalMainFrame()->loader().resourceRequestForReload(
FrameLoadTypeReload, KURL(), ClientRedirect));
request.setClientRedirect(ClientRedirect);
m_page->deprecatedLocalMainFrame()->loader().load(request, FrameLoadTypeReload);
}
}
WebFrame* WebViewImpl::mainFrame()
{
return WebFrame::fromFrame(m_page ? m_page->mainFrame() : 0);
}
WebFrame* WebViewImpl::findFrameByName(
const WebString& name, WebFrame* relativeToFrame)
{
// FIXME: Either this should only deal with WebLocalFrames or it should move to WebFrame.
if (!relativeToFrame)
relativeToFrame = mainFrame();
Frame* frame = toWebLocalFrameImpl(relativeToFrame)->frame();
frame = frame->tree().find(name);
if (!frame || !frame->isLocalFrame())
return 0;
return WebLocalFrameImpl::fromFrame(toLocalFrame(frame));
}
WebFrame* WebViewImpl::focusedFrame()
{
return WebFrame::fromFrame(focusedCoreFrame());
}
void WebViewImpl::setFocusedFrame(WebFrame* frame)
{
if (!frame) {
// Clears the focused frame if any.
Frame* focusedFrame = focusedCoreFrame();
if (focusedFrame && focusedFrame->isLocalFrame())
toLocalFrame(focusedFrame)->selection().setFocused(false);
return;
}
LocalFrame* coreFrame = toWebLocalFrameImpl(frame)->frame();
coreFrame->page()->focusController().setFocusedFrame(coreFrame);
}
void WebViewImpl::setInitialFocus(bool reverse)
{
if (!m_page)
return;
Frame* frame = page()->focusController().focusedOrMainFrame();
if (frame->isLocalFrame()) {
if (Document* document = toLocalFrame(frame)->document())
document->setFocusedElement(nullptr);
}
page()->focusController().setInitialFocus(reverse ? WebFocusTypeBackward : WebFocusTypeForward);
}
void WebViewImpl::clearFocusedElement()
{
RefPtrWillBeRawPtr<Frame> frame = focusedCoreFrame();
if (!frame || !frame->isLocalFrame())
return;
LocalFrame* localFrame = toLocalFrame(frame.get());
RefPtrWillBeRawPtr<Document> document = localFrame->document();
if (!document)
return;
RefPtrWillBeRawPtr<Element> oldFocusedElement = document->focusedElement();
// Clear the focused node.
document->setFocusedElement(nullptr);
if (!oldFocusedElement)
return;
// If a text field has focus, we need to make sure the selection controller
// knows to remove selection from it. Otherwise, the text field is still
// processing keyboard events even though focus has been moved to the page and
// keystrokes get eaten as a result.
if (oldFocusedElement->isContentEditable() || oldFocusedElement->isTextFormControl())
localFrame->selection().clear();
}
bool WebViewImpl::scrollFocusedNodeIntoRect(const WebRect& rectInViewport)
{
LocalFrame* frame = page()->mainFrame() && page()->mainFrame()->isLocalFrame()
? page()->deprecatedLocalMainFrame() : 0;
Element* element = focusedElement();
if (!frame || !frame->view() || !element)
return false;
element->document().updateLayoutIgnorePendingStylesheets();
bool zoomInToLegibleScale = m_webSettings->autoZoomFocusedNodeToLegibleScale()
&& !shouldDisableDesktopWorkarounds();
if (zoomInToLegibleScale) {
// When deciding whether to zoom in on a focused text box, we should decide not to
// zoom in if the user won't be able to zoom out. e.g if the textbox is within a
// touch-action: none container the user can't zoom back out.
TouchAction action = TouchActionUtil::computeEffectiveTouchAction(*element);
if (action != TouchActionAuto && !(action & TouchActionPinchZoom))
zoomInToLegibleScale = false;
}
float scale;
IntPoint scroll;
bool needAnimation;
computeScaleAndScrollForFocusedNode(element, zoomInToLegibleScale, scale, scroll, needAnimation);
if (needAnimation)
return startPageScaleAnimation(scroll, false, scale, scrollAndScaleAnimationDurationInSeconds);
return false;
}
void WebViewImpl::smoothScroll(int targetX, int targetY, long durationMs)
{
IntPoint targetPosition(targetX, targetY);
startPageScaleAnimation(targetPosition, false, pageScaleFactor(), (double)durationMs / 1000);
}
void WebViewImpl::computeScaleAndScrollForFocusedNode(Node* focusedNode, bool zoomInToLegibleScale, float& newScale, IntPoint& newScroll, bool& needAnimation)
{
VisualViewport& visualViewport = page()->frameHost().visualViewport();
WebRect caretInViewport, unusedEnd;
selectionBounds(caretInViewport, unusedEnd);
// 'caretInDocument' is rect encompassing the blinking cursor relative to the root document.
IntRect caretInDocument = mainFrameImpl()->frameView()->frameToContents(visualViewport.viewportToRootFrame(caretInViewport));
IntRect textboxRectInDocument = mainFrameImpl()->frameView()->frameToContents(
focusedNode->document().view()->contentsToRootFrame(pixelSnappedIntRect(focusedNode->Node::boundingBox())));
if (!zoomInToLegibleScale) {
newScale = pageScaleFactor();
} else {
// Pick a scale which is reasonably readable. This is the scale at which
// the caret height will become minReadableCaretHeightForNode (adjusted
// for dpi and font scale factor).
const int minReadableCaretHeightForNode = textboxRectInDocument.height() >= 2 * caretInDocument.height() ? minReadableCaretHeightForTextArea : minReadableCaretHeight;
newScale = clampPageScaleFactorToLimits(maximumLegiblePageScale() * minReadableCaretHeightForNode / caretInDocument.height());
newScale = std::max(newScale, pageScaleFactor());
}
const float deltaScale = newScale / pageScaleFactor();
needAnimation = false;
// If we are at less than the target zoom level, zoom in.
if (deltaScale > minScaleChangeToTriggerZoom)
needAnimation = true;
else
newScale = pageScaleFactor();
// If the caret is offscreen, then animate.
if (!visualViewport.visibleRectInDocument().contains(caretInDocument))
needAnimation = true;
// If the box is partially offscreen and it's possible to bring it fully
// onscreen, then animate.
if (visualViewport.visibleRect().width() >= textboxRectInDocument.width()
&& visualViewport.visibleRect().height() >= textboxRectInDocument.height()
&& !visualViewport.visibleRectInDocument().contains(textboxRectInDocument))
needAnimation = true;
if (!needAnimation)
return;
FloatSize targetViewportSize = visualViewport.size();
targetViewportSize.scale(1 / newScale);
if (textboxRectInDocument.width() <= targetViewportSize.width()) {
// Field is narrower than screen. Try to leave padding on left so field's
// label is visible, but it's more important to ensure entire field is
// onscreen.
int idealLeftPadding = targetViewportSize.width() * leftBoxRatio;
int maxLeftPaddingKeepingBoxOnscreen = targetViewportSize.width() - textboxRectInDocument.width();
newScroll.setX(textboxRectInDocument.x() - std::min<int>(idealLeftPadding, maxLeftPaddingKeepingBoxOnscreen));
} else {
// Field is wider than screen. Try to left-align field, unless caret would
// be offscreen, in which case right-align the caret.
newScroll.setX(std::max<int>(textboxRectInDocument.x(), caretInDocument.x() + caretInDocument.width() + caretPadding - targetViewportSize.width()));
}
if (textboxRectInDocument.height() <= targetViewportSize.height()) {
// Field is shorter than screen. Vertically center it.
newScroll.setY(textboxRectInDocument.y() - (targetViewportSize.height() - textboxRectInDocument.height()) / 2);
} else {
// Field is taller than screen. Try to top align field, unless caret would
// be offscreen, in which case bottom-align the caret.
newScroll.setY(std::max<int>(textboxRectInDocument.y(), caretInDocument.y() + caretInDocument.height() + caretPadding - targetViewportSize.height()));
}
}
void WebViewImpl::advanceFocus(bool reverse)
{
page()->focusController().advanceFocus(reverse ? WebFocusTypeBackward : WebFocusTypeForward);
}
double WebViewImpl::zoomLevel()
{
return m_zoomLevel;
}
double WebViewImpl::setZoomLevel(double zoomLevel)
{
if (zoomLevel < m_minimumZoomLevel)
m_zoomLevel = m_minimumZoomLevel;
else if (zoomLevel > m_maximumZoomLevel)
m_zoomLevel = m_maximumZoomLevel;
else
m_zoomLevel = zoomLevel;
LocalFrame* frame = mainFrameImpl()->frame();
if (!WebLocalFrameImpl::pluginContainerFromFrame(frame)) {
float zoomFactor = m_zoomFactorOverride ? m_zoomFactorOverride : static_cast<float>(zoomLevelToZoomFactor(m_zoomLevel));
frame->setPageZoomFactor(zoomFactor);
}
return m_zoomLevel;
}
void WebViewImpl::zoomLimitsChanged(double minimumZoomLevel,
double maximumZoomLevel)
{
m_minimumZoomLevel = minimumZoomLevel;
m_maximumZoomLevel = maximumZoomLevel;
m_client->zoomLimitsChanged(m_minimumZoomLevel, m_maximumZoomLevel);
}
float WebViewImpl::textZoomFactor()
{
return mainFrameImpl()->frame()->textZoomFactor();
}
float WebViewImpl::setTextZoomFactor(float textZoomFactor)
{
LocalFrame* frame = mainFrameImpl()->frame();
if (WebLocalFrameImpl::pluginContainerFromFrame(frame))
return 1;
frame->setTextZoomFactor(textZoomFactor);
return textZoomFactor;
}
double WebView::zoomLevelToZoomFactor(double zoomLevel)
{
return pow(textSizeMultiplierRatio, zoomLevel);
}
double WebView::zoomFactorToZoomLevel(double factor)
{
// Since factor = 1.2^level, level = log(factor) / log(1.2)
return log(factor) / log(textSizeMultiplierRatio);
}
float WebViewImpl::pageScaleFactor() const
{
if (!page())
return 1;
return page()->frameHost().visualViewport().scale();
}
float WebViewImpl::clampPageScaleFactorToLimits(float scaleFactor) const
{
return pageScaleConstraintsSet().finalConstraints().clampToConstraints(scaleFactor);
}
void WebViewImpl::setVisualViewportOffset(const WebFloatPoint& offset)
{
ASSERT(page());
page()->frameHost().visualViewport().setLocation(offset);
}
void WebViewImpl::setPinchViewportOffset(const WebFloatPoint& offset)
{
setVisualViewportOffset(offset);
}
WebFloatPoint WebViewImpl::visualViewportOffset() const
{
ASSERT(page());
return page()->frameHost().visualViewport().visibleRect().location();
}
WebFloatPoint WebViewImpl::pinchViewportOffset() const
{
return visualViewportOffset();
}
void WebViewImpl::scrollAndRescaleViewports(float scaleFactor,
const IntPoint& mainFrameOrigin,
const FloatPoint& visualViewportOrigin)
{
if (!page())
return;
if (!mainFrameImpl())
return;
FrameView * view = mainFrameImpl()->frameView();
if (!view)
return;
// Order is important: visual viewport location is clamped based on
// main frame scroll position and visual viewport scale.
view->setScrollPosition(mainFrameOrigin, ProgrammaticScroll);
setPageScaleFactor(scaleFactor);
page()->frameHost().visualViewport().setLocation(visualViewportOrigin);
}
void WebViewImpl::setPageScaleFactorAndLocation(float scaleFactor, const FloatPoint& location)
{
ASSERT(page());
page()->frameHost().visualViewport().setScaleAndLocation(
clampPageScaleFactorToLimits(scaleFactor),
location);
}
void WebViewImpl::setPageScaleFactor(float scaleFactor)
{
ASSERT(page());
scaleFactor = clampPageScaleFactorToLimits(scaleFactor);
if (scaleFactor == pageScaleFactor())
return;
page()->frameHost().visualViewport().setScale(scaleFactor);
}
float WebViewImpl::deviceScaleFactor() const
{
if (!page())
return 1;
return page()->deviceScaleFactor();
}
void WebViewImpl::setDeviceScaleFactor(float scaleFactor)
{
if (!page())
return;
page()->setDeviceScaleFactor(scaleFactor);
if (m_layerTreeView)
updateLayerTreeDeviceScaleFactor();
}
void WebViewImpl::setDeviceColorProfile(const WebVector<char>& colorProfile)
{
if (!page())
return;
Vector<char> deviceProfile;
deviceProfile.append(colorProfile.data(), colorProfile.size());
page()->setDeviceColorProfile(deviceProfile);
}
void WebViewImpl::resetDeviceColorProfile()
{
if (!page())
return;
page()->resetDeviceColorProfile();
}
void WebViewImpl::enableAutoResizeMode(const WebSize& minSize, const WebSize& maxSize)
{
m_shouldAutoResize = true;
m_minAutoSize = minSize;
m_maxAutoSize = maxSize;
configureAutoResizeMode();
}
void WebViewImpl::disableAutoResizeMode()
{
m_shouldAutoResize = false;
configureAutoResizeMode();
}
void WebViewImpl::setDefaultPageScaleLimits(float minScale, float maxScale)
{
return page()->frameHost().setDefaultPageScaleLimits(minScale, maxScale);
}
void WebViewImpl::setInitialPageScaleOverride(float initialPageScaleFactorOverride)
{
PageScaleConstraints constraints = pageScaleConstraintsSet().userAgentConstraints();
constraints.initialScale = initialPageScaleFactorOverride;
if (constraints == pageScaleConstraintsSet().userAgentConstraints())
return;
pageScaleConstraintsSet().setNeedsReset(true);
page()->frameHost().setUserAgentPageScaleConstraints(constraints);
}
void WebViewImpl::setMaximumLegibleScale(float maximumLegibleScale)
{
m_maximumLegibleScale = maximumLegibleScale;
}
void WebViewImpl::setIgnoreViewportTagScaleLimits(bool ignore)
{
PageScaleConstraints constraints = pageScaleConstraintsSet().userAgentConstraints();
if (ignore) {
constraints.minimumScale = pageScaleConstraintsSet().defaultConstraints().minimumScale;
constraints.maximumScale = pageScaleConstraintsSet().defaultConstraints().maximumScale;
} else {
constraints.minimumScale = -1;
constraints.maximumScale = -1;
}
page()->frameHost().setUserAgentPageScaleConstraints(constraints);
}
IntSize WebViewImpl::mainFrameSize()
{
return pageScaleConstraintsSet().mainFrameSize();
}
PageScaleConstraintsSet& WebViewImpl::pageScaleConstraintsSet() const
{
return page()->frameHost().pageScaleConstraintsSet();
}
void WebViewImpl::refreshPageScaleFactorAfterLayout()
{
if (!mainFrame() || !page() || !page()->mainFrame() || !page()->mainFrame()->isLocalFrame() || !page()->deprecatedLocalMainFrame()->view())
return;
FrameView* view = page()->deprecatedLocalMainFrame()->view();
updatePageDefinedViewportConstraints(mainFrameImpl()->frame()->document()->viewportDescription());
pageScaleConstraintsSet().computeFinalConstraints();
int verticalScrollbarWidth = 0;
if (view->verticalScrollbar() && !view->verticalScrollbar()->isOverlayScrollbar())
verticalScrollbarWidth = view->verticalScrollbar()->width();
pageScaleConstraintsSet().adjustFinalConstraintsToContentsSize(contentsSize(), verticalScrollbarWidth, settings()->shrinksViewportContentToFit());
float newPageScaleFactor = pageScaleFactor();
if (pageScaleConstraintsSet().needsReset() && pageScaleConstraintsSet().finalConstraints().initialScale != -1) {
newPageScaleFactor = pageScaleConstraintsSet().finalConstraints().initialScale;
pageScaleConstraintsSet().setNeedsReset(false);
}
setPageScaleFactor(newPageScaleFactor);
updateLayerTreeViewport();
}
void WebViewImpl::updatePageDefinedViewportConstraints(const ViewportDescription& description)
{
// If we're not reading the viewport meta tag, allow GPU rasterization.
if (!settingsImpl()->viewportMetaEnabled()) {
m_matchesHeuristicsForGpuRasterization = true;
if (m_layerTreeView)
m_layerTreeView->heuristicsForGpuRasterizationUpdated(m_matchesHeuristicsForGpuRasterization);
}
if (!settings()->viewportEnabled() || !page() || (!m_size.width && !m_size.height) || !page()->mainFrame()->isLocalFrame())
return;
Document* document = page()->deprecatedLocalMainFrame()->document();
m_matchesHeuristicsForGpuRasterization = description.matchesHeuristicsForGpuRasterization();
if (m_layerTreeView)
m_layerTreeView->heuristicsForGpuRasterizationUpdated(m_matchesHeuristicsForGpuRasterization);
Length defaultMinWidth = document->viewportDefaultMinWidth();
if (defaultMinWidth.isAuto())
defaultMinWidth = Length(ExtendToZoom);
ViewportDescription adjustedDescription = description;
if (settingsImpl()->viewportMetaLayoutSizeQuirk() && adjustedDescription.type == ViewportDescription::ViewportMeta) {
const int legacyWidthSnappingMagicNumber = 320;
if (adjustedDescription.maxWidth.isFixed() && adjustedDescription.maxWidth.value() <= legacyWidthSnappingMagicNumber)
adjustedDescription.maxWidth = Length(DeviceWidth);
if (adjustedDescription.maxHeight.isFixed() && adjustedDescription.maxHeight.value() <= m_size.height)
adjustedDescription.maxHeight = Length(DeviceHeight);
adjustedDescription.minWidth = adjustedDescription.maxWidth;
adjustedDescription.minHeight = adjustedDescription.maxHeight;
}
float oldInitialScale = pageScaleConstraintsSet().pageDefinedConstraints().initialScale;
pageScaleConstraintsSet().updatePageDefinedConstraints(adjustedDescription, defaultMinWidth);
if (settingsImpl()->clobberUserAgentInitialScaleQuirk()
&& pageScaleConstraintsSet().userAgentConstraints().initialScale != -1
&& pageScaleConstraintsSet().userAgentConstraints().initialScale * deviceScaleFactor() <= 1) {
if (description.maxWidth == Length(DeviceWidth)
|| (description.maxWidth.type() == Auto && pageScaleConstraintsSet().pageDefinedConstraints().initialScale == 1.0f))
setInitialPageScaleOverride(-1);
}
pageScaleConstraintsSet().adjustForAndroidWebViewQuirks(adjustedDescription, defaultMinWidth.intValue(), deviceScaleFactor(), settingsImpl()->supportDeprecatedTargetDensityDPI(), page()->settings().wideViewportQuirkEnabled(), page()->settings().useWideViewport(), page()->settings().loadWithOverviewMode(), settingsImpl()->viewportMetaNonUserScalableQuirk());
float newInitialScale = pageScaleConstraintsSet().pageDefinedConstraints().initialScale;
if (oldInitialScale != newInitialScale && newInitialScale != -1) {
pageScaleConstraintsSet().setNeedsReset(true);
if (mainFrameImpl() && mainFrameImpl()->frameView())
mainFrameImpl()->frameView()->setNeedsLayout();
}
updateMainFrameLayoutSize();
if (LocalFrame* frame = page()->deprecatedLocalMainFrame()) {
if (TextAutosizer* textAutosizer = frame->document()->textAutosizer())
textAutosizer->updatePageInfoInAllFrames();
}
}
void WebViewImpl::updateMainFrameLayoutSize()
{
if (m_shouldAutoResize || !mainFrameImpl())
return;
RefPtrWillBeRawPtr<FrameView> view = mainFrameImpl()->frameView();
if (!view)
return;
WebSize layoutSize = m_size;
if (settings()->viewportEnabled())
layoutSize = pageScaleConstraintsSet().layoutSize();
if (page()->settings().forceZeroLayoutHeight())
layoutSize.height = 0;
view->setLayoutSize(layoutSize);
// Resizing marks the frame as needsLayout. Inform clients so that they
// will perform the layout. Widgets held by WebPluginContainerImpl do not otherwise
// see this resize layout invalidation.
if (client())
client()->didUpdateLayoutSize(layoutSize);
}
IntSize WebViewImpl::contentsSize() const
{
if (!page()->mainFrame()->isLocalFrame())
return IntSize();
LayoutView* root = page()->deprecatedLocalMainFrame()->contentLayoutObject();
if (!root)
return IntSize();
return root->documentRect().size();
}
WebSize WebViewImpl::contentsPreferredMinimumSize()
{
layout();
Document* document = m_page->mainFrame()->isLocalFrame() ? m_page->deprecatedLocalMainFrame()->document() : 0;
if (!document || !document->layoutView() || !document->documentElement() || !document->documentElement()->layoutBox())
return WebSize();
int widthScaled = document->layoutView()->minPreferredLogicalWidth().round(); // Already accounts for zoom.
int heightScaled = document->documentElement()->layoutBox()->scrollHeight().round();
return IntSize(widthScaled, heightScaled);
}
void WebViewImpl::setCompositedDisplayList(PassOwnPtr<CompositedDisplayList> compositedDisplayList)
{
m_compositedDisplayList.assign(compositedDisplayList);
}
WebCompositedDisplayList* WebViewImpl::compositedDisplayList()
{
return &m_compositedDisplayList;
}
void WebViewImpl::enableViewport()
{
settings()->setViewportEnabled(true);
}
void WebViewImpl::disableViewport()
{
settings()->setViewportEnabled(false);
pageScaleConstraintsSet().clearPageDefinedConstraints();
updateMainFrameLayoutSize();
}
float WebViewImpl::defaultMinimumPageScaleFactor() const
{
return pageScaleConstraintsSet().defaultConstraints().minimumScale;
}
float WebViewImpl::defaultMaximumPageScaleFactor() const
{
return pageScaleConstraintsSet().defaultConstraints().maximumScale;
}
float WebViewImpl::minimumPageScaleFactor() const
{
return pageScaleConstraintsSet().finalConstraints().minimumScale;
}
float WebViewImpl::maximumPageScaleFactor() const
{
return pageScaleConstraintsSet().finalConstraints().maximumScale;
}
void WebViewImpl::resetScrollAndScaleState()
{
resetScrollAndScaleState(false);
}
void WebViewImpl::resetScrollAndScaleStateImmediately()
{
resetScrollAndScaleState(true);
}
void WebViewImpl::resetScrollAndScaleState(bool immediately)
{
page()->frameHost().visualViewport().reset();
if (!page()->mainFrame()->isLocalFrame())
return;
if (FrameView* frameView = toLocalFrame(page()->mainFrame())->view()) {
ScrollableArea* scrollableArea = frameView->layoutViewportScrollableArea();
if (scrollableArea->scrollPositionDouble() != DoublePoint::zero())
scrollableArea->setScrollPosition(DoublePoint::zero(), ProgrammaticScroll);
}
pageScaleConstraintsSet().setNeedsReset(true);
if (immediately)
refreshPageScaleFactorAfterLayout();
// Clobber saved scales and scroll offsets.
if (FrameView* view = page()->deprecatedLocalMainFrame()->document()->view())
view->cacheCurrentScrollPosition();
}
void WebViewImpl::performMediaPlayerAction(const WebMediaPlayerAction& action,
const WebPoint& location)
{
HitTestResult result = hitTestResultForViewportPos(location);
RefPtrWillBeRawPtr<Node> node = result.innerNode();
if (!isHTMLVideoElement(*node) && !isHTMLAudioElement(*node))
return;
RefPtrWillBeRawPtr<HTMLMediaElement> mediaElement = static_pointer_cast<HTMLMediaElement>(node);
switch (action.type) {
case WebMediaPlayerAction::Play:
if (action.enable)
mediaElement->play();
else
mediaElement->pause();
break;
case WebMediaPlayerAction::Mute:
mediaElement->setMuted(action.enable);
break;
case WebMediaPlayerAction::Loop:
mediaElement->setLoop(action.enable);
break;
case WebMediaPlayerAction::Controls:
mediaElement->setBooleanAttribute(HTMLNames::controlsAttr, action.enable);
break;
default:
ASSERT_NOT_REACHED();
}
}
void WebViewImpl::performPluginAction(const WebPluginAction& action,
const WebPoint& location)
{
// FIXME: Location is probably in viewport coordinates
HitTestResult result = hitTestResultForRootFramePos(location);
RefPtrWillBeRawPtr<Node> node = result.innerNode();
if (!isHTMLObjectElement(*node) && !isHTMLEmbedElement(*node))
return;
LayoutObject* object = node->layoutObject();
if (object && object->isLayoutPart()) {
Widget* widget = toLayoutPart(object)->widget();
if (widget && widget->isPluginContainer()) {
WebPluginContainerImpl* plugin = toWebPluginContainerImpl(widget);
switch (action.type) {
case WebPluginAction::Rotate90Clockwise:
plugin->plugin()->rotateView(WebPlugin::RotationType90Clockwise);
break;
case WebPluginAction::Rotate90Counterclockwise:
plugin->plugin()->rotateView(WebPlugin::RotationType90Counterclockwise);
break;
default:
ASSERT_NOT_REACHED();
}
}
}
}
WebHitTestResult WebViewImpl::hitTestResultAt(const WebPoint& point)
{
return coreHitTestResultAt(point);
}
HitTestResult WebViewImpl::coreHitTestResultAt(const WebPoint& pointInViewport)
{
FrameView* view = mainFrameImpl()->frameView();
IntPoint pointInRootFrame = view->contentsToFrame(view->viewportToContents(pointInViewport));
return hitTestResultForRootFramePos(pointInRootFrame);
}
void WebViewImpl::copyImageAt(const WebPoint& point)
{
if (!m_page)
return;
HitTestResult result = hitTestResultForViewportPos(point);
if (!isHTMLCanvasElement(result.innerNodeOrImageMapImage()) && result.absoluteImageURL().isEmpty()) {
// There isn't actually an image at these coordinates. Might be because
// the window scrolled while the context menu was open or because the page
// changed itself between when we thought there was an image here and when
// we actually tried to retreive the image.
//
// FIXME: implement a cache of the most recent HitTestResult to avoid having
// to do two hit tests.
return;
}
m_page->deprecatedLocalMainFrame()->editor().copyImage(result);
}
void WebViewImpl::saveImageAt(const WebPoint& point)
{
if (!m_client)
return;
Node* node = hitTestResultForViewportPos(point).innerNodeOrImageMapImage();
if (!node || !(isHTMLCanvasElement(*node) || isHTMLImageElement(*node)))
return;
String url = toElement(*node).imageSourceURL();
if (!KURL(KURL(), url).protocolIsData())
return;
m_client->saveImageFromDataURL(url);
}
void WebViewImpl::dragSourceEndedAt(
const WebPoint& clientPoint,
const WebPoint& screenPoint,
WebDragOperation operation)
{
PlatformMouseEvent pme(clientPoint, screenPoint, LeftButton, PlatformEvent::MouseMoved,
0, false, false, false, false, PlatformMouseEvent::RealOrIndistinguishable, 0);
m_page->deprecatedLocalMainFrame()->eventHandler().dragSourceEndedAt(pme,
static_cast<DragOperation>(operation));
}
void WebViewImpl::dragSourceSystemDragEnded()
{
// It's possible for us to get this callback while not doing a drag if
// it's from a previous page that got unloaded.
if (m_doingDragAndDrop) {
m_page->dragController().dragEnded();
m_doingDragAndDrop = false;
}
}
WebDragOperation WebViewImpl::dragTargetDragEnter(
const WebDragData& webDragData,
const WebPoint& clientPoint,
const WebPoint& screenPoint,
WebDragOperationsMask operationsAllowed,
int modifiers)
{
ASSERT(!m_currentDragData);
m_currentDragData = DataObject::create(webDragData);
m_operationsAllowed = operationsAllowed;
return dragTargetDragEnterOrOver(clientPoint, screenPoint, DragEnter, modifiers);
}
WebDragOperation WebViewImpl::dragTargetDragOver(
const WebPoint& clientPoint,
const WebPoint& screenPoint,
WebDragOperationsMask operationsAllowed,
int modifiers)
{
m_operationsAllowed = operationsAllowed;
return dragTargetDragEnterOrOver(clientPoint, screenPoint, DragOver, modifiers);
}
void WebViewImpl::dragTargetDragLeave()
{
ASSERT(m_currentDragData);
DragData dragData(
m_currentDragData.get(),
IntPoint(),
IntPoint(),
static_cast<DragOperation>(m_operationsAllowed));
m_page->dragController().dragExited(&dragData);
// FIXME: why is the drag scroll timer not stopped here?
m_dragOperation = WebDragOperationNone;
m_currentDragData = nullptr;
}
void WebViewImpl::dragTargetDrop(const WebPoint& clientPoint,
const WebPoint& screenPoint,
int modifiers)
{
ASSERT(m_currentDragData);
WebAutofillClient* autofillClient = mainFrameImpl() ? mainFrameImpl()->autofillClient() : 0;
UserGestureNotifier notifier(autofillClient, &m_userGestureObserved);
// If this webview transitions from the "drop accepting" state to the "not
// accepting" state, then our IPC message reply indicating that may be in-
// flight, or else delayed by javascript processing in this webview. If a
// drop happens before our IPC reply has reached the browser process, then
// the browser forwards the drop to this webview. So only allow a drop to
// proceed if our webview m_dragOperation state is not DragOperationNone.
if (m_dragOperation == WebDragOperationNone) { // IPC RACE CONDITION: do not allow this drop.
dragTargetDragLeave();
return;
}
m_currentDragData->setModifiers(toPlatformMouseEventModifiers(modifiers));
DragData dragData(
m_currentDragData.get(),
clientPoint,
screenPoint,
static_cast<DragOperation>(m_operationsAllowed));
UserGestureIndicator gesture(DefinitelyProcessingNewUserGesture);
m_page->dragController().performDrag(&dragData);
m_dragOperation = WebDragOperationNone;
m_currentDragData = nullptr;
}
void WebViewImpl::spellingMarkers(WebVector<uint32_t>* markers)
{
Vector<uint32_t> result;
for (Frame* frame = m_page->mainFrame(); frame; frame = frame->tree().traverseNext()) {
if (!frame->isLocalFrame())
continue;
const DocumentMarkerVector& documentMarkers = toLocalFrame(frame)->document()->markers().markers();
for (size_t i = 0; i < documentMarkers.size(); ++i)
result.append(documentMarkers[i]->hash());
}
markers->assign(result);
}
void WebViewImpl::removeSpellingMarkersUnderWords(const WebVector<WebString>& words)
{
Vector<String> convertedWords;
convertedWords.append(words.data(), words.size());
for (Frame* frame = m_page->mainFrame(); frame; frame = frame->tree().traverseNext()) {
if (frame->isLocalFrame())
toLocalFrame(frame)->removeSpellingMarkersUnderWords(convertedWords);
}
}
WebDragOperation WebViewImpl::dragTargetDragEnterOrOver(const WebPoint& clientPoint, const WebPoint& screenPoint, DragAction dragAction, int modifiers)
{
ASSERT(m_currentDragData);
m_currentDragData->setModifiers(toPlatformMouseEventModifiers(modifiers));
DragData dragData(
m_currentDragData.get(),
clientPoint,
screenPoint,
static_cast<DragOperation>(m_operationsAllowed));
DragSession dragSession;
if (dragAction == DragEnter)
dragSession = m_page->dragController().dragEntered(&dragData);
else
dragSession = m_page->dragController().dragUpdated(&dragData);
DragOperation dropEffect = dragSession.operation;
// Mask the drop effect operation against the drag source's allowed operations.
if (!(dropEffect & dragData.draggingSourceOperationMask()))
dropEffect = DragOperationNone;
m_dragOperation = static_cast<WebDragOperation>(dropEffect);
return m_dragOperation;
}
void WebViewImpl::sendResizeEventAndRepaint()
{
// FIXME: This is wrong. The FrameView is responsible sending a resizeEvent
// as part of layout. Layout is also responsible for sending invalidations
// to the embedder. This method and all callers may be wrong. -- eseidel.
if (mainFrameImpl()->frameView()) {
// Enqueues the resize event.
mainFrameImpl()->frame()->document()->enqueueResizeEvent();
}
if (m_client) {
if (m_layerTreeView) {
updateLayerTreeViewport();
} else {
WebRect damagedRect(0, 0, m_size.width, m_size.height);
m_client->didInvalidateRect(damagedRect);
}
}
updatePageOverlays();
m_devToolsEmulator->viewportChanged();
}
void WebViewImpl::configureAutoResizeMode()
{
if (!mainFrameImpl() || !mainFrameImpl()->frame() || !mainFrameImpl()->frame()->view())
return;
if (m_shouldAutoResize)
mainFrameImpl()->frame()->view()->enableAutoSizeMode(m_minAutoSize, m_maxAutoSize);
else
mainFrameImpl()->frame()->view()->disableAutoSizeMode();
}
unsigned long WebViewImpl::createUniqueIdentifierForRequest()
{
return createUniqueIdentifier();
}
void WebViewImpl::setCompositorDeviceScaleFactorOverride(float deviceScaleFactor)
{
if (m_compositorDeviceScaleFactorOverride == deviceScaleFactor)
return;
m_compositorDeviceScaleFactorOverride = deviceScaleFactor;
if (page() && m_layerTreeView)
updateLayerTreeDeviceScaleFactor();
}
void WebViewImpl::setRootLayerTransform(const WebSize& rootLayerOffset, float rootLayerScale)
{
if (m_rootLayerScale == rootLayerScale && m_rootLayerOffset == rootLayerOffset)
return;
m_rootLayerScale = rootLayerScale;
m_rootLayerOffset = rootLayerOffset;
if (mainFrameImpl())
mainFrameImpl()->setInputEventsTransformForEmulation(m_rootLayerOffset, m_rootLayerScale);
updateRootLayerTransform();
}
void WebViewImpl::enableDeviceEmulation(const WebDeviceEmulationParams& params)
{
m_devToolsEmulator->enableDeviceEmulation(params);
}
void WebViewImpl::disableDeviceEmulation()
{
m_devToolsEmulator->disableDeviceEmulation();
}
WebAXObject WebViewImpl::accessibilityObject()
{
if (!mainFrameImpl())
return WebAXObject();
Document* document = mainFrameImpl()->frame()->document();
return WebAXObject(toAXObjectCacheImpl(document->axObjectCache())->root());
}
void WebViewImpl::performCustomContextMenuAction(unsigned action)
{
if (!m_page)
return;
ContextMenu* menu = m_page->contextMenuController().contextMenu();
if (!menu)
return;
const ContextMenuItem* item = menu->itemWithAction(static_cast<ContextMenuAction>(ContextMenuItemBaseCustomTag + action));
if (item)
m_page->contextMenuController().contextMenuItemSelected(item);
m_page->contextMenuController().clearContextMenu();
}
void WebViewImpl::showContextMenu()
{
if (!page())
return;
page()->contextMenuController().clearContextMenu();
m_contextMenuAllowed = true;
if (LocalFrame* focusedFrame = toLocalFrame(page()->focusController().focusedOrMainFrame()))
focusedFrame->eventHandler().sendContextMenuEventForKey(nullptr);
m_contextMenuAllowed = false;
}
void WebViewImpl::extractSmartClipData(WebRect rectInViewport, WebString& clipText, WebString& clipHtml, WebRect& clipRectInViewport)
{
LocalFrame* localFrame = toLocalFrame(focusedCoreFrame());
if (!localFrame)
return;
SmartClipData clipData = SmartClip(localFrame).dataForRect(rectInViewport);
clipText = clipData.clipData();
clipRectInViewport = clipData.rectInViewport();
WebLocalFrameImpl* frame = mainFrameImpl();
if (!frame)
return;
WebPoint startPoint(rectInViewport.x, rectInViewport.y);
WebPoint endPoint(rectInViewport.x + rectInViewport.width, rectInViewport.y + rectInViewport.height);
VisiblePosition startVisiblePosition = frame->visiblePositionForViewportPoint(startPoint);
VisiblePosition endVisiblePosition = frame->visiblePositionForViewportPoint(endPoint);
Position startPosition = startVisiblePosition.deepEquivalent();
Position endPosition = endVisiblePosition.deepEquivalent();
// document() will return null if -webkit-user-select is set to none.
if (!startPosition.document() || !endPosition.document())
return;
clipHtml = createMarkup(startPosition, endPosition, AnnotateForInterchange, ConvertBlocksToInlines::NotConvert, ResolveNonLocalURLs);
}
void WebViewImpl::hidePopups()
{
cancelPagePopup();
}
void WebViewImpl::setIsTransparent(bool isTransparent)
{
// Set any existing frames to be transparent.
Frame* frame = m_page->mainFrame();
while (frame) {
if (frame->isLocalFrame())
toLocalFrame(frame)->view()->setTransparent(isTransparent);
frame = frame->tree().traverseNext();
}
// Future frames check this to know whether to be transparent.
m_isTransparent = isTransparent;
if (m_layerTreeView)
m_layerTreeView->setHasTransparentBackground(this->isTransparent());
}
bool WebViewImpl::isTransparent() const
{
return m_isTransparent;
}
void WebViewImpl::setBaseBackgroundColor(WebColor color)
{
layout();
if (m_baseBackgroundColor == color)
return;
m_baseBackgroundColor = color;
if (m_page->mainFrame() && m_page->mainFrame()->isLocalFrame())
m_page->deprecatedLocalMainFrame()->view()->setBaseBackgroundColor(color);
updateLayerTreeBackgroundColor();
}
void WebViewImpl::setIsActive(bool active)
{
if (page())
page()->focusController().setActive(active);
}
bool WebViewImpl::isActive() const
{
return page() ? page()->focusController().isActive() : false;
}
void WebViewImpl::setDomainRelaxationForbidden(bool forbidden, const WebString& scheme)
{
SchemeRegistry::setDomainRelaxationForbiddenForURLScheme(forbidden, String(scheme));
}
void WebViewImpl::setWindowFeatures(const WebWindowFeatures& features)
{
m_page->chromeClient().setWindowFeatures(features);
}
void WebViewImpl::setOpenedByDOM()
{
m_page->setOpenedByDOM();
}
void WebViewImpl::setSelectionColors(unsigned activeBackgroundColor,
unsigned activeForegroundColor,
unsigned inactiveBackgroundColor,
unsigned inactiveForegroundColor) {
#if USE(DEFAULT_RENDER_THEME)
LayoutThemeDefault::setSelectionColors(activeBackgroundColor, activeForegroundColor, inactiveBackgroundColor, inactiveForegroundColor);
LayoutTheme::theme().platformColorsDidChange();
#endif
}
void WebViewImpl::didCommitLoad(bool isNewNavigation, bool isNavigationWithinPage)
{
if (isNewNavigation && !isNavigationWithinPage) {
pageScaleConstraintsSet().setNeedsReset(true);
pageImportanceSignals().onCommitLoad();
}
// Give the visual viewport's scroll layer its initial size.
page()->frameHost().visualViewport().mainFrameDidChangeSize();
// Make sure link highlight from previous page is cleared.
m_linkHighlights.clear();
endActiveFlingAnimation();
m_userGestureObserved = false;
}
void WebViewImpl::willInsertBody(WebLocalFrameImpl* webframe)
{
resumeTreeViewCommitsIfNeeded(webframe);
}
void WebViewImpl::didFinishDocumentLoad(WebLocalFrameImpl* webframe)
{
resumeTreeViewCommitsIfNeeded(webframe);
}
void WebViewImpl::didRemoveAllPendingStylesheet(WebLocalFrameImpl* webframe)
{
resumeTreeViewCommitsIfNeeded(webframe);
}
void WebViewImpl::resumeTreeViewCommitsIfNeeded(WebLocalFrameImpl* webframe)
{
if (webframe != mainFrameImpl())
return;
if (!webframe->frame()->document()->shouldProcessFrameLifecycle())
return;
if (!m_layerTreeView)
return;
m_layerTreeView->setDeferCommits(false);
}
void WebViewImpl::postLayoutResize(WebLocalFrameImpl* webframe)
{
FrameView* view = webframe->frame()->view();
if (webframe == mainFrame())
view->resize(mainFrameSize());
else
view->resize(webframe->frameView()->size());
}
void WebViewImpl::layoutUpdated(WebLocalFrameImpl* webframe)
{
if (!m_client || !webframe->frame()->isLocalRoot())
return;
if (m_shouldAutoResize && webframe->frame() && webframe->frame()->view()) {
WebSize frameSize = webframe->frame()->view()->frameRect().size();
if (frameSize != m_size) {
m_size = frameSize;
page()->frameHost().visualViewport().setSize(m_size);
pageScaleConstraintsSet().didChangeViewSize(m_size);
m_client->didAutoResize(m_size);
sendResizeEventAndRepaint();
}
}
if (pageScaleConstraintsSet().constraintsDirty())
refreshPageScaleFactorAfterLayout();
FrameView* view = webframe->frame()->view();
postLayoutResize(webframe);
// Relayout immediately to avoid violating the rule that needsLayout()
// isn't set at the end of a layout.
if (view->needsLayout())
view->layout();
// In case we didn't have a size when the top controls were updated.
didUpdateTopControls();
m_client->didUpdateLayout();
}
void WebViewImpl::didChangeContentsSize()
{
pageScaleConstraintsSet().didChangeContentsSize(contentsSize(), pageScaleFactor());
}
void WebViewImpl::pageScaleFactorChanged()
{
pageScaleConstraintsSet().setNeedsReset(false);
updateLayerTreeViewport();
if (m_inspectorOverlay)
m_inspectorOverlay->update();
m_devToolsEmulator->viewportChanged();
m_client->pageScaleFactorChanged();
}
bool WebViewImpl::useExternalPopupMenus()
{
return shouldUseExternalPopupMenus;
}
void WebViewImpl::startDragging(LocalFrame* frame,
const WebDragData& dragData,
WebDragOperationsMask mask,
const WebImage& dragImage,
const WebPoint& dragImageOffset)
{
if (!m_client)
return;
ASSERT(!m_doingDragAndDrop);
m_doingDragAndDrop = true;
m_client->startDragging(WebLocalFrameImpl::fromFrame(frame), dragData, mask, dragImage, dragImageOffset);
}
void WebViewImpl::setIgnoreInputEvents(bool newValue)
{
ASSERT(m_ignoreInputEvents != newValue);
m_ignoreInputEvents = newValue;
}
void WebViewImpl::setBackgroundColorOverride(WebColor color)
{
m_backgroundColorOverride = color;
updateLayerTreeBackgroundColor();
}
void WebViewImpl::setZoomFactorOverride(float zoomFactor)
{
m_zoomFactorOverride = zoomFactor;
setZoomLevel(zoomLevel());
}
void WebViewImpl::setPageOverlayColor(WebColor color)
{
if (m_pageColorOverlay)
m_pageColorOverlay.clear();
if (color == Color::transparent)
return;
m_pageColorOverlay = PageOverlay::create(this, new ColorOverlay(color));
m_pageColorOverlay->update();
}
Element* WebViewImpl::focusedElement() const
{
Frame* frame = m_page->focusController().focusedFrame();
if (!frame || !frame->isLocalFrame())
return 0;
Document* document = toLocalFrame(frame)->document();
if (!document)
return 0;
return document->focusedElement();
}
HitTestResult WebViewImpl::hitTestResultForViewportPos(const IntPoint& posInViewport)
{
IntPoint rootFramePoint(m_page->frameHost().visualViewport().viewportToRootFrame(posInViewport));
return hitTestResultForRootFramePos(rootFramePoint);
}
HitTestResult WebViewImpl::hitTestResultForRootFramePos(const IntPoint& posInRootFrame)
{
if (!m_page->mainFrame()->isLocalFrame())
return HitTestResult();
IntPoint docPoint(m_page->deprecatedLocalMainFrame()->view()->rootFrameToContents(posInRootFrame));
HitTestResult result = m_page->deprecatedLocalMainFrame()->eventHandler().hitTestResultAtPoint(docPoint, HitTestRequest::ReadOnly | HitTestRequest::Active);
result.setToShadowHostIfInUserAgentShadowRoot();
return result;
}
WebHitTestResult WebViewImpl::hitTestResultForTap(const WebPoint& tapPointWindowPos, const WebSize& tapArea)
{
if (!m_page->mainFrame()->isLocalFrame())
return HitTestResult();
WebGestureEvent tapEvent;
tapEvent.x = tapPointWindowPos.x;
tapEvent.y = tapPointWindowPos.y;
tapEvent.type = WebInputEvent::GestureTap;
tapEvent.data.tap.tapCount = 1;
tapEvent.data.tap.width = tapArea.width;
tapEvent.data.tap.height = tapArea.height;
PlatformGestureEventBuilder platformEvent(mainFrameImpl()->frameView(), tapEvent);
HitTestResult result = m_page->deprecatedLocalMainFrame()->eventHandler().hitTestResultForGestureEvent(platformEvent, HitTestRequest::ReadOnly | HitTestRequest::Active).hitTestResult();
result.setToShadowHostIfInUserAgentShadowRoot();
return result;
}
void WebViewImpl::setTabsToLinks(bool enable)
{
m_tabsToLinks = enable;
}
bool WebViewImpl::tabsToLinks() const
{
return m_tabsToLinks;
}
void WebViewImpl::suppressInvalidations(bool enable)
{
if (m_client)
m_client->suppressCompositorScheduling(enable);
}
void WebViewImpl::setRootGraphicsLayer(GraphicsLayer* layer)
{
if (!m_layerTreeView)
return;
suppressInvalidations(true);
VisualViewport& visualViewport = page()->frameHost().visualViewport();
visualViewport.attachToLayerTree(layer, graphicsLayerFactory());
if (layer) {
m_rootGraphicsLayer = visualViewport.rootGraphicsLayer();
m_rootLayer = visualViewport.rootGraphicsLayer()->platformLayer();
m_rootTransformLayer = visualViewport.rootGraphicsLayer();
updateRootLayerTransform();
m_layerTreeView->setRootLayer(*m_rootLayer);
// We register viewport layers here since there may not be a layer
// tree view prior to this point.
page()->frameHost().visualViewport().registerLayersWithTreeView(m_layerTreeView);
updatePageOverlays();
// TODO(enne): Work around page visibility changes not being
// propogated to the WebView in some circumstances. This needs to
// be refreshed here when setting a new root layer to avoid being
// stuck in a presumed incorrectly invisible state.
bool visible = page()->visibilityState() == PageVisibilityStateVisible;
m_layerTreeView->setVisible(visible);
} else {
m_rootGraphicsLayer = nullptr;
m_rootLayer = nullptr;
m_rootTransformLayer = nullptr;
// This means that we're transitioning to a new page. Suppress
// commits until Blink generates invalidations so we don't
// attempt to paint too early in the next page load.
m_layerTreeView->setDeferCommits(true);
m_layerTreeView->clearRootLayer();
m_shouldDispatchFirstVisuallyNonEmptyLayout = true;
page()->frameHost().visualViewport().clearLayersForTreeView(m_layerTreeView);
}
suppressInvalidations(false);
}
void WebViewImpl::invalidateRect(const IntRect& rect)
{
if (m_layerTreeView)
updateLayerTreeViewport();
else if (m_client)
m_client->didInvalidateRect(rect);
}
GraphicsLayerFactory* WebViewImpl::graphicsLayerFactory() const
{
return m_graphicsLayerFactory.get();
}
DeprecatedPaintLayerCompositor* WebViewImpl::compositor() const
{
if (!page() || !page()->mainFrame() || !page()->mainFrame()->isLocalFrame())
return 0;
if (!page()->deprecatedLocalMainFrame()->document() || !page()->deprecatedLocalMainFrame()->document()->layoutView())
return 0;
return page()->deprecatedLocalMainFrame()->document()->layoutView()->compositor();
}
void WebViewImpl::registerForAnimations(WebLayer* layer)
{
if (m_layerTreeView)
m_layerTreeView->registerForAnimations(layer);
}
GraphicsLayer* WebViewImpl::rootGraphicsLayer()
{
return m_rootGraphicsLayer;
}
void WebViewImpl::scheduleAnimation()
{
if (m_layerTreeView) {
m_layerTreeView->setNeedsBeginFrame();
return;
}
if (m_client)
m_client->scheduleAnimation();
}
void WebViewImpl::attachCompositorAnimationTimeline(WebCompositorAnimationTimeline* timeline)
{
if (m_layerTreeView)
m_layerTreeView->attachCompositorAnimationTimeline(timeline);
}
void WebViewImpl::detachCompositorAnimationTimeline(WebCompositorAnimationTimeline* timeline)
{
if (m_layerTreeView)
m_layerTreeView->detachCompositorAnimationTimeline(timeline);
}
void WebViewImpl::initializeLayerTreeView()
{
if (m_client) {
m_client->initializeLayerTreeView();
m_layerTreeView = m_client->layerTreeView();
}
if (WebDevToolsAgentImpl* devTools = mainFrameDevToolsAgentImpl())
devTools->layerTreeViewChanged(m_layerTreeView);
m_page->settings().setAcceleratedCompositingEnabled(m_layerTreeView != 0);
// FIXME: only unittests, click to play, Android priting, and printing (for headers and footers)
// make this assert necessary. We should make them not hit this code and then delete allowsBrokenNullLayerTreeView.
ASSERT(m_layerTreeView || !m_client || m_client->allowsBrokenNullLayerTreeView());
if (RuntimeEnabledFeatures::compositorAnimationTimelinesEnabled() && m_layerTreeView) {
ASSERT(Platform::current()->compositorSupport());
m_linkHighlightsTimeline = adoptPtr(Platform::current()->compositorSupport()->createAnimationTimeline());
attachCompositorAnimationTimeline(m_linkHighlightsTimeline.get());
}
}
void WebViewImpl::applyViewportDeltas(
const WebFloatSize& visualViewportDelta,
const WebFloatSize& layoutViewportDelta,
const WebFloatSize& elasticOverscrollDelta,
float pageScaleDelta,
float topControlsShownRatioDelta)
{
if (!mainFrameImpl())
return;
FrameView* frameView = mainFrameImpl()->frameView();
if (!frameView)
return;
topControls().setShownRatio(topControls().shownRatio() + topControlsShownRatioDelta);
FloatPoint visualViewportOffset = page()->frameHost().visualViewport().visibleRect().location();
visualViewportOffset.move(visualViewportDelta.width, visualViewportDelta.height);
setPageScaleFactorAndLocation(pageScaleFactor() * pageScaleDelta, visualViewportOffset);
if (pageScaleDelta != 1)
m_doubleTapZoomPending = false;
m_elasticOverscroll += elasticOverscrollDelta;
frameView->didUpdateElasticOverscroll();
ScrollableArea* layoutViewport = frameView->layoutViewportScrollableArea();
DoublePoint layoutViewportPosition = layoutViewport->scrollPositionDouble()
+ DoubleSize(layoutViewportDelta.width, layoutViewportDelta.height);
if (layoutViewport->scrollPositionDouble() != layoutViewportPosition) {
layoutViewport->setScrollPosition(layoutViewportPosition, CompositorScroll);
if (DocumentLoader* documentLoader = mainFrameImpl()->frame()->loader().documentLoader())
documentLoader->initialScrollState().wasScrolledByUser = true;
}
}
void WebViewImpl::recordFrameTimingEvent(FrameTimingEventType eventType, int64_t FrameId, const WebVector<WebFrameTimingEvent>& events)
{
Frame* frame = m_page ? m_page->mainFrame() : 0;
while (frame && frame->frameID() != FrameId) {
frame = frame->tree().traverseNext();
}
if (!frame || !frame->domWindow() || !frame->domWindow()->document())
return; // Can't find frame, it may have been cleaned up from the DOM.
blink::DOMWindow* domWindow = frame->domWindow();
blink::Performance* performance = DOMWindowPerformance::performance(*domWindow);
for (size_t i = 0; i < events.size(); ++i) {
if (eventType == CompositeEvent)
performance->addCompositeTiming(domWindow->document(), events[i].sourceFrame, events[i].startTime);
else if (eventType == RenderEvent)
performance->addRenderTiming(domWindow->document(), events[i].sourceFrame, events[i].startTime, events[i].finishTime);
}
}
void WebViewImpl::updateLayerTreeViewport()
{
if (!page() || !m_layerTreeView)
return;
m_layerTreeView->setPageScaleFactorAndLimits(pageScaleFactor(), minimumPageScaleFactor(), maximumPageScaleFactor());
}
void WebViewImpl::updateLayerTreeBackgroundColor()
{
if (!m_layerTreeView)
return;
m_layerTreeView->setBackgroundColor(alphaChannel(m_backgroundColorOverride) ? m_backgroundColorOverride : backgroundColor());
}
void WebViewImpl::updateLayerTreeDeviceScaleFactor()
{
ASSERT(page());
ASSERT(m_layerTreeView);
float deviceScaleFactor = m_compositorDeviceScaleFactorOverride ? m_compositorDeviceScaleFactorOverride : page()->deviceScaleFactor();
m_layerTreeView->setDeviceScaleFactor(deviceScaleFactor);
}
void WebViewImpl::updateRootLayerTransform()
{
// If we don't have a root graphics layer, we won't bother trying to find
// or update the transform layer.
if (!m_rootGraphicsLayer)
return;
if (m_rootTransformLayer) {
TransformationMatrix transform;
transform.translate(m_rootLayerOffset.width, m_rootLayerOffset.height);
transform = transform.scale(m_rootLayerScale);
m_rootTransformLayer->setTransform(transform);
}
}
bool WebViewImpl::detectContentOnTouch(const GestureEventWithHitTestResults& targetedEvent)
{
if (!m_page->mainFrame()->isLocalFrame())
return false;
// Need a local copy of the hit test as setToShadowHostIfInUserAgentShadowRoot() will modify it.
HitTestResult touchHit = targetedEvent.hitTestResult();
touchHit.setToShadowHostIfInUserAgentShadowRoot();
if (touchHit.isContentEditable())
return false;
Node* node = touchHit.innerNode();
if (!node || !node->isTextNode())
return false;
// Ignore when tapping on links or nodes listening to click events, unless the click event is on the
// body element, in which case it's unlikely that the original node itself was intended to be clickable.
for (; node && !isHTMLBodyElement(*node); node = LayoutTreeBuilderTraversal::parent(*node)) {
if (node->isLink() || node->willRespondToTouchEvents() || node->willRespondToMouseClickEvents())
return false;
}
WebContentDetectionResult content = m_client->detectContentAround(touchHit);
if (!content.isValid())
return false;
m_client->scheduleContentIntent(content.intent());
return true;
}
void WebViewImpl::setVisibilityState(WebPageVisibilityState visibilityState,
bool isInitialState) {
ASSERT(visibilityState == WebPageVisibilityStateVisible || visibilityState == WebPageVisibilityStateHidden || visibilityState == WebPageVisibilityStatePrerender);
if (page())
m_page->setVisibilityState(static_cast<PageVisibilityState>(static_cast<int>(visibilityState)), isInitialState);
if (m_layerTreeView) {
bool visible = visibilityState == WebPageVisibilityStateVisible;
m_layerTreeView->setVisible(visible);
}
}
bool WebViewImpl::requestPointerLock()
{
return m_client && m_client->requestPointerLock();
}
void WebViewImpl::requestPointerUnlock()
{
if (m_client)
m_client->requestPointerUnlock();
}
bool WebViewImpl::isPointerLocked()
{
return m_client && m_client->isPointerLocked();
}
void WebViewImpl::pointerLockMouseEvent(const WebInputEvent& event)
{
OwnPtr<UserGestureIndicator> gestureIndicator;
AtomicString eventType;
switch (event.type) {
case WebInputEvent::MouseDown:
eventType = EventTypeNames::mousedown;
gestureIndicator = adoptPtr(new UserGestureIndicator(DefinitelyProcessingNewUserGesture));
m_pointerLockGestureToken = gestureIndicator->currentToken();
break;
case WebInputEvent::MouseUp:
eventType = EventTypeNames::mouseup;
gestureIndicator = adoptPtr(new UserGestureIndicator(m_pointerLockGestureToken.release()));
break;
case WebInputEvent::MouseMove:
eventType = EventTypeNames::mousemove;
break;
default:
ASSERT_NOT_REACHED();
}
const WebMouseEvent& mouseEvent = static_cast<const WebMouseEvent&>(event);
if (page())
page()->pointerLockController().dispatchLockedMouseEvent(
PlatformMouseEventBuilder(mainFrameImpl()->frameView(), mouseEvent),
eventType);
}
bool WebViewImpl::shouldDisableDesktopWorkarounds()
{
if (!settings()->viewportEnabled())
return false;
// A document is considered adapted to small screen UAs if one of these holds:
// 1. The author specified viewport has a constrained width that is equal to
// the initial viewport width.
// 2. The author has disabled viewport zoom.
const PageScaleConstraints& constraints = pageScaleConstraintsSet().pageDefinedConstraints();
if (!mainFrameImpl() || !mainFrameImpl()->frameView())
return false;
return mainFrameImpl()->frameView()->layoutSize().width() == m_size.width
|| (constraints.minimumScale == constraints.maximumScale && constraints.minimumScale != -1);
}
void WebViewImpl::forceNextWebGLContextCreationToFail()
{
WebGLRenderingContext::forceNextWebGLContextCreationToFail();
}
void WebViewImpl::forceNextDrawingBufferCreationToFail()
{
DrawingBuffer::forceNextDrawingBufferCreationToFail();
}
void WebViewImpl::updatePageOverlays()
{
if (m_pageColorOverlay)
m_pageColorOverlay->update();
if (m_inspectorOverlay) {
PageOverlay* inspectorPageOverlay = m_inspectorOverlay->pageOverlay();
if (inspectorPageOverlay)
inspectorPageOverlay->update();
}
}
} // namespace blink