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chromium / chromium / src / 7da6c3419fd172405bcece1ae4ec6ec8316cd345 / . / content / browser / renderer_host / render_widget_host_impl.cc
blob: 20c871c7d056b658382b8b3c5d6e5d2d0eead1d0 [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/renderer_host/render_widget_host_impl.h"
#include <math.h>
#include <algorithm>
#include <set>
#include <tuple>
#include <utility>
#include "base/auto_reset.h"
#include "base/bind.h"
#include "base/command_line.h"
#include "base/containers/hash_tables.h"
#include "base/debug/dump_without_crashing.h"
#include "base/i18n/rtl.h"
#include "base/lazy_instance.h"
#include "base/location.h"
#include "base/macros.h"
#include "base/memory/shared_memory.h"
#include "base/message_loop/message_loop.h"
#include "base/metrics/field_trial.h"
#include "base/metrics/histogram_macros.h"
#include "base/single_thread_task_runner.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/utf_string_conversions.h"
#include "base/task/post_task.h"
#include "base/threading/thread_task_runner_handle.h"
#include "base/time/default_tick_clock.h"
#include "base/trace_event/trace_event.h"
#include "build/build_config.h"
#include "cc/base/switches.h"
#include "cc/trees/render_frame_metadata.h"
#include "components/viz/common/features.h"
#include "components/viz/common/quads/compositor_frame.h"
#include "components/viz/host/host_frame_sink_manager.h"
#include "components/viz/service/display_embedder/server_shared_bitmap_manager.h"
#include "content/browser/accessibility/browser_accessibility_state_impl.h"
#include "content/browser/bad_message.h"
#include "content/browser/browser_main_loop.h"
#include "content/browser/browser_plugin/browser_plugin_guest.h"
#include "content/browser/child_process_security_policy_impl.h"
#include "content/browser/compositor/surface_utils.h"
#include "content/browser/fileapi/browser_file_system_helper.h"
#include "content/browser/gpu/compositor_util.h"
#include "content/browser/renderer_host/dip_util.h"
#include "content/browser/renderer_host/display_util.h"
#include "content/browser/renderer_host/frame_token_message_queue.h"
#include "content/browser/renderer_host/input/fling_scheduler.h"
#include "content/browser/renderer_host/input/input_router_config_helper.h"
#include "content/browser/renderer_host/input/input_router_impl.h"
#include "content/browser/renderer_host/input/synthetic_gesture.h"
#include "content/browser/renderer_host/input/synthetic_gesture_controller.h"
#include "content/browser/renderer_host/input/synthetic_gesture_target.h"
#include "content/browser/renderer_host/input/timeout_monitor.h"
#include "content/browser/renderer_host/input/touch_emulator.h"
#include "content/browser/renderer_host/render_view_host_delegate.h"
#include "content/browser/renderer_host/render_view_host_delegate_view.h"
#include "content/browser/renderer_host/render_view_host_impl.h"
#include "content/browser/renderer_host/render_widget_helper.h"
#include "content/browser/renderer_host/render_widget_host_input_event_router.h"
#include "content/browser/renderer_host/render_widget_host_owner_delegate.h"
#include "content/browser/renderer_host/render_widget_host_view_base.h"
#include "content/common/content_constants_internal.h"
#include "content/common/cursors/webcursor.h"
#include "content/common/drag_messages.h"
#include "content/common/frame_messages.h"
#include "content/common/input/sync_compositor_messages.h"
#include "content/common/input_messages.h"
#include "content/common/text_input_state.h"
#include "content/common/view_messages.h"
#include "content/common/visual_properties.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/keyboard_event_processing_result.h"
#include "content/public/browser/native_web_keyboard_event.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_types.h"
#include "content/public/browser/render_frame_metadata_provider.h"
#include "content/public/browser/render_widget_host_iterator.h"
#include "content/public/browser/render_widget_host_observer.h"
#include "content/public/browser/storage_partition.h"
#include "content/public/common/content_constants.h"
#include "content/public/common/content_features.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/result_codes.h"
#include "content/public/common/use_zoom_for_dsf_policy.h"
#include "content/public/common/web_preferences.h"
#include "gpu/GLES2/gl2extchromium.h"
#include "gpu/command_buffer/service/gpu_switches.h"
#include "gpu/ipc/common/gpu_messages.h"
#include "mojo/public/cpp/system/platform_handle.h"
#include "net/base/filename_util.h"
#include "skia/ext/image_operations.h"
#include "skia/ext/platform_canvas.h"
#include "storage/browser/fileapi/isolated_context.h"
#include "third_party/blink/public/web/web_ime_text_span.h"
#include "ui/base/clipboard/clipboard.h"
#include "ui/base/ui_base_switches.h"
#include "ui/display/display_switches.h"
#include "ui/display/screen.h"
#include "ui/events/blink/web_input_event_traits.h"
#include "ui/events/event.h"
#include "ui/events/keycodes/dom/dom_code.h"
#include "ui/gfx/color_space.h"
#include "ui/gfx/geometry/size_conversions.h"
#include "ui/gfx/geometry/vector2d_conversions.h"
#include "ui/gfx/geometry/vector2d_f.h"
#include "ui/gfx/image/image.h"
#include "ui/gfx/image/image_skia.h"
#include "ui/gfx/skbitmap_operations.h"
#include "ui/snapshot/snapshot.h"
#if defined(OS_ANDROID)
#include "content/browser/renderer_host/input/fling_scheduler_android.h"
#include "ui/android/view_android.h"
#endif
#if defined(OS_MACOSX)
#include "content/browser/renderer_host/input/fling_scheduler_mac.h"
#include "content/public/common/service_manager_connection.h"
#include "services/device/public/mojom/constants.mojom.h"
#include "services/device/public/mojom/wake_lock_provider.mojom.h"
#include "services/service_manager/public/cpp/connector.h"
#include "ui/accelerated_widget_mac/window_resize_helper_mac.h"
#endif
using base::TimeDelta;
using base::TimeTicks;
using blink::WebDragOperation;
using blink::WebDragOperationsMask;
using blink::WebGestureEvent;
using blink::WebInputEvent;
using blink::WebKeyboardEvent;
using blink::WebMouseEvent;
using blink::WebMouseWheelEvent;
using blink::WebTextDirection;
namespace content {
namespace {
bool g_check_for_pending_visual_properties_ack = true;
// <process id, routing id>
using RenderWidgetHostID = std::pair<int32_t, int32_t>;
using RoutingIDWidgetMap =
base::hash_map<RenderWidgetHostID, RenderWidgetHostImpl*>;
base::LazyInstance<RoutingIDWidgetMap>::DestructorAtExit
g_routing_id_widget_map = LAZY_INSTANCE_INITIALIZER;
// Implements the RenderWidgetHostIterator interface. It keeps a list of
// RenderWidgetHosts, and makes sure it returns a live RenderWidgetHost at each
// iteration (or NULL if there isn't any left).
class RenderWidgetHostIteratorImpl : public RenderWidgetHostIterator {
public:
RenderWidgetHostIteratorImpl()
: current_index_(0) {
}
~RenderWidgetHostIteratorImpl() override {}
void Add(RenderWidgetHost* host) {
hosts_.push_back(RenderWidgetHostID(host->GetProcess()->GetID(),
host->GetRoutingID()));
}
// RenderWidgetHostIterator:
RenderWidgetHost* GetNextHost() override {
RenderWidgetHost* host = nullptr;
while (current_index_ < hosts_.size() && !host) {
RenderWidgetHostID id = hosts_[current_index_];
host = RenderWidgetHost::FromID(id.first, id.second);
++current_index_;
}
return host;
}
private:
std::vector<RenderWidgetHostID> hosts_;
size_t current_index_;
DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostIteratorImpl);
};
inline blink::WebGestureEvent CreateScrollBeginForWrapping(
const blink::WebGestureEvent& gesture_event) {
DCHECK(gesture_event.GetType() == blink::WebInputEvent::kGestureScrollUpdate);
blink::WebGestureEvent wrap_gesture_scroll_begin(
blink::WebInputEvent::kGestureScrollBegin, gesture_event.GetModifiers(),
gesture_event.TimeStamp(), gesture_event.SourceDevice());
wrap_gesture_scroll_begin.data.scroll_begin.delta_x_hint = 0;
wrap_gesture_scroll_begin.data.scroll_begin.delta_y_hint = 0;
wrap_gesture_scroll_begin.resending_plugin_id =
gesture_event.resending_plugin_id;
wrap_gesture_scroll_begin.data.scroll_begin.delta_hint_units =
gesture_event.data.scroll_update.delta_units;
return wrap_gesture_scroll_begin;
}
inline blink::WebGestureEvent CreateScrollEndForWrapping(
const blink::WebGestureEvent& gesture_event) {
DCHECK(gesture_event.GetType() == blink::WebInputEvent::kGestureScrollUpdate);
blink::WebGestureEvent wrap_gesture_scroll_end(
blink::WebInputEvent::kGestureScrollEnd, gesture_event.GetModifiers(),
gesture_event.TimeStamp(), gesture_event.SourceDevice());
wrap_gesture_scroll_end.resending_plugin_id =
gesture_event.resending_plugin_id;
wrap_gesture_scroll_end.data.scroll_end.delta_units =
gesture_event.data.scroll_update.delta_units;
return wrap_gesture_scroll_end;
}
std::vector<DropData::Metadata> DropDataToMetaData(const DropData& drop_data) {
std::vector<DropData::Metadata> metadata;
if (!drop_data.text.is_null()) {
metadata.push_back(DropData::Metadata::CreateForMimeType(
DropData::Kind::STRING,
base::ASCIIToUTF16(ui::Clipboard::kMimeTypeText)));
}
if (drop_data.url.is_valid()) {
metadata.push_back(DropData::Metadata::CreateForMimeType(
DropData::Kind::STRING,
base::ASCIIToUTF16(ui::Clipboard::kMimeTypeURIList)));
}
if (!drop_data.html.is_null()) {
metadata.push_back(DropData::Metadata::CreateForMimeType(
DropData::Kind::STRING,
base::ASCIIToUTF16(ui::Clipboard::kMimeTypeHTML)));
}
// On Aura, filenames are available before drop.
for (const auto& file_info : drop_data.filenames) {
if (!file_info.path.empty()) {
metadata.push_back(DropData::Metadata::CreateForFilePath(file_info.path));
}
}
// On Android, only files' mime types are available before drop.
for (const auto& mime_type : drop_data.file_mime_types) {
if (!mime_type.empty()) {
metadata.push_back(DropData::Metadata::CreateForMimeType(
DropData::Kind::FILENAME, mime_type));
}
}
for (const auto& file_system_file : drop_data.file_system_files) {
if (!file_system_file.url.is_empty()) {
metadata.push_back(
DropData::Metadata::CreateForFileSystemUrl(file_system_file.url));
}
}
for (const auto& custom_data_item : drop_data.custom_data) {
metadata.push_back(DropData::Metadata::CreateForMimeType(
DropData::Kind::STRING, custom_data_item.first));
}
return metadata;
}
class UnboundWidgetInputHandler : public mojom::WidgetInputHandler {
public:
void SetFocus(bool focused) override {
DLOG(WARNING) << "Input request on unbound interface";
}
void MouseCaptureLost() override {
DLOG(WARNING) << "Input request on unbound interface";
}
void SetEditCommandsForNextKeyEvent(
const std::vector<content::EditCommand>& commands) override {
DLOG(WARNING) << "Input request on unbound interface";
}
void CursorVisibilityChanged(bool visible) override {
DLOG(WARNING) << "Input request on unbound interface";
}
void ImeSetComposition(const base::string16& text,
const std::vector<ui::ImeTextSpan>& ime_text_spans,
const gfx::Range& range,
int32_t start,
int32_t end) override {
DLOG(WARNING) << "Input request on unbound interface";
}
void ImeCommitText(const base::string16& text,
const std::vector<ui::ImeTextSpan>& ime_text_spans,
const gfx::Range& range,
int32_t relative_cursor_position,
ImeCommitTextCallback callback) override {
DLOG(WARNING) << "Input request on unbound interface";
}
void ImeFinishComposingText(bool keep_selection) override {
DLOG(WARNING) << "Input request on unbound interface";
}
void RequestTextInputStateUpdate() override {
DLOG(WARNING) << "Input request on unbound interface";
}
void RequestCompositionUpdates(bool immediate_request,
bool monitor_request) override {
DLOG(WARNING) << "Input request on unbound interface";
}
void DispatchEvent(std::unique_ptr<content::InputEvent> event,
DispatchEventCallback callback) override {
DLOG(WARNING) << "Input request on unbound interface";
}
void DispatchNonBlockingEvent(
std::unique_ptr<content::InputEvent> event) override {
DLOG(WARNING) << "Input request on unbound interface";
}
void AttachSynchronousCompositor(
mojom::SynchronousCompositorControlHostPtr control_host,
mojom::SynchronousCompositorHostAssociatedPtrInfo host,
mojom::SynchronousCompositorAssociatedRequest compositor_request)
override {
NOTREACHED() << "Input request on unbound interface";
}
};
base::LazyInstance<UnboundWidgetInputHandler>::Leaky g_unbound_input_handler =
LAZY_INSTANCE_INITIALIZER;
} // namespace
///////////////////////////////////////////////////////////////////////////////
// RenderWidgetHostImpl
RenderWidgetHostImpl::RenderWidgetHostImpl(RenderWidgetHostDelegate* delegate,
RenderProcessHost* process,
int32_t routing_id,
mojom::WidgetPtr widget,
bool hidden)
: renderer_initialized_(false),
destroyed_(false),
delegate_(delegate),
owner_delegate_(nullptr),
process_(process),
routing_id_(routing_id),
clock_(base::DefaultTickClock::GetInstance()),
is_loading_(false),
is_hidden_(hidden),
visual_properties_ack_pending_(false),
auto_resize_enabled_(false),
waiting_for_screen_rects_ack_(false),
needs_repainting_on_restore_(false),
is_unresponsive_(false),
in_flight_event_count_(0),
in_get_backing_store_(false),
ignore_input_events_(false),
text_direction_updated_(false),
text_direction_(blink::kWebTextDirectionLeftToRight),
text_direction_canceled_(false),
suppress_events_until_keydown_(false),
pending_mouse_lock_request_(false),
allow_privileged_mouse_lock_(false),
is_last_unlocked_by_target_(false),
has_touch_handler_(false),
is_in_touchpad_gesture_fling_(false),
latency_tracker_(delegate_),
next_browser_snapshot_id_(1),
owned_by_render_frame_host_(false),
is_focused_(false),
hung_renderer_delay_(TimeDelta::FromMilliseconds(kHungRendererDelayMs)),
new_content_rendering_delay_(
TimeDelta::FromMilliseconds(kNewContentRenderingDelayMs)),
current_content_source_id_(0),
monitoring_composition_info_(false),
compositor_frame_sink_binding_(this),
frame_token_message_queue_(
std::make_unique<FrameTokenMessageQueue>(this)),
render_frame_metadata_provider_(
#if defined(OS_MACOSX)
ui::WindowResizeHelperMac::Get()->task_runner(),
#else
base::ThreadTaskRunnerHandle::Get(),
#endif
frame_token_message_queue_.get()),
frame_sink_id_(base::checked_cast<uint32_t>(process_->GetID()),
base::checked_cast<uint32_t>(routing_id_)),
weak_factory_(this) {
#if defined(OS_MACOSX)
fling_scheduler_ = std::make_unique<FlingSchedulerMac>(this);
#elif defined(OS_ANDROID)
fling_scheduler_ = std::make_unique<FlingSchedulerAndroid>(this);
#else
fling_scheduler_ = std::make_unique<FlingScheduler>(this);
#endif
CHECK(delegate_);
CHECK_NE(MSG_ROUTING_NONE, routing_id_);
DCHECK(base::TaskScheduler::GetInstance())
<< "Ref. Prerequisite section of post_task.h";
std::pair<RoutingIDWidgetMap::iterator, bool> result =
g_routing_id_widget_map.Get().insert(std::make_pair(
RenderWidgetHostID(process->GetID(), routing_id_), this));
CHECK(result.second) << "Inserting a duplicate item!";
process_->AddRoute(routing_id_, this);
process_->AddWidget(this);
SetupInputRouter();
SetWidget(std::move(widget));
const auto* command_line = base::CommandLine::ForCurrentProcess();
if (!command_line->HasSwitch(switches::kDisableHangMonitor)) {
input_event_ack_timeout_.reset(new TimeoutMonitor(
base::BindRepeating(&RenderWidgetHostImpl::OnInputEventAckTimeout,
weak_factory_.GetWeakPtr())));
}
if (!command_line->HasSwitch(switches::kDisableNewContentRenderingTimeout)) {
new_content_rendering_timeout_.reset(new TimeoutMonitor(
base::Bind(&RenderWidgetHostImpl::ClearDisplayedGraphics,
weak_factory_.GetWeakPtr())));
}
enable_surface_synchronization_ = features::IsSurfaceSynchronizationEnabled();
enable_viz_ = base::FeatureList::IsEnabled(features::kVizDisplayCompositor);
if (!enable_viz_) {
#if !defined(OS_ANDROID)
// Software compositing is not supported or used on Android.
//
// The BrowserMainLoop is null in unit tests, but they do not use
// compositing and report SharedBitmapIds.
if (BrowserMainLoop* main_loop = BrowserMainLoop::GetInstance())
shared_bitmap_manager_ = main_loop->GetServerSharedBitmapManager();
#endif
}
delegate_->RenderWidgetCreated(this);
render_frame_metadata_provider_.AddObserver(this);
}
RenderWidgetHostImpl::~RenderWidgetHostImpl() {
render_frame_metadata_provider_.RemoveObserver(this);
if (!destroyed_)
Destroy(false);
}
// static
RenderWidgetHost* RenderWidgetHost::FromID(
int32_t process_id,
int32_t routing_id) {
return RenderWidgetHostImpl::FromID(process_id, routing_id);
}
// static
RenderWidgetHostImpl* RenderWidgetHostImpl::FromID(
int32_t process_id,
int32_t routing_id) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
RoutingIDWidgetMap* widgets = g_routing_id_widget_map.Pointer();
RoutingIDWidgetMap::iterator it = widgets->find(
RenderWidgetHostID(process_id, routing_id));
return it == widgets->end() ? NULL : it->second;
}
// static
std::unique_ptr<RenderWidgetHostIterator>
RenderWidgetHost::GetRenderWidgetHosts() {
std::unique_ptr<RenderWidgetHostIteratorImpl> hosts(
new RenderWidgetHostIteratorImpl());
for (auto& it : g_routing_id_widget_map.Get()) {
RenderWidgetHost* widget = it.second;
RenderViewHost* rvh = RenderViewHost::From(widget);
if (!rvh) {
hosts->Add(widget);
continue;
}
// For RenderViewHosts, add only active ones.
if (static_cast<RenderViewHostImpl*>(rvh)->is_active())
hosts->Add(widget);
}
return std::move(hosts);
}
// static
std::unique_ptr<RenderWidgetHostIterator>
RenderWidgetHostImpl::GetAllRenderWidgetHosts() {
std::unique_ptr<RenderWidgetHostIteratorImpl> hosts(
new RenderWidgetHostIteratorImpl());
for (auto& it : g_routing_id_widget_map.Get())
hosts->Add(it.second);
return std::move(hosts);
}
// static
RenderWidgetHostImpl* RenderWidgetHostImpl::From(RenderWidgetHost* rwh) {
return static_cast<RenderWidgetHostImpl*>(rwh);
}
void RenderWidgetHostImpl::SetView(RenderWidgetHostViewBase* view) {
if (view) {
view_ = view->GetWeakPtr();
if (enable_viz_) {
if (!create_frame_sink_callback_.is_null())
std::move(create_frame_sink_callback_).Run(view_->GetFrameSinkId());
} else {
if (renderer_compositor_frame_sink_.is_bound()) {
view->DidCreateNewRendererCompositorFrameSink(
renderer_compositor_frame_sink_.get());
}
// Views start out not needing begin frames, so only update its state
// if the value has changed.
if (needs_begin_frames_)
view_->SetNeedsBeginFrames(needs_begin_frames_);
}
} else {
view_.reset();
}
synthetic_gesture_controller_.reset();
}
RenderProcessHost* RenderWidgetHostImpl::GetProcess() const {
return process_;
}
int RenderWidgetHostImpl::GetRoutingID() const {
return routing_id_;
}
RenderWidgetHostViewBase* RenderWidgetHostImpl::GetView() const {
return view_.get();
}
const viz::FrameSinkId& RenderWidgetHostImpl::GetFrameSinkId() const {
return frame_sink_id_;
}
void RenderWidgetHostImpl::ResetSentVisualProperties() {
visual_properties_ack_pending_ = false;
old_visual_properties_.reset();
}
void RenderWidgetHostImpl::SendScreenRects() {
if (!renderer_initialized_ || waiting_for_screen_rects_ack_)
return;
if (is_hidden_) {
// On GTK, this comes in for backgrounded tabs. Ignore, to match what
// happens on Win & Mac, and when the view is shown it'll call this again.
return;
}
if (!view_)
return;
last_view_screen_rect_ = view_->GetViewBounds();
last_window_screen_rect_ = view_->GetBoundsInRootWindow();
view_->WillSendScreenRects();
Send(new ViewMsg_UpdateScreenRects(
GetRoutingID(), last_view_screen_rect_, last_window_screen_rect_));
waiting_for_screen_rects_ack_ = true;
}
void RenderWidgetHostImpl::SetFrameDepth(unsigned int depth) {
if (frame_depth_ == depth)
return;
frame_depth_ = depth;
UpdatePriority();
}
void RenderWidgetHostImpl::SetIntersectsViewport(bool intersects) {
if (intersects_viewport_ == intersects)
return;
intersects_viewport_ = intersects;
UpdatePriority();
}
void RenderWidgetHostImpl::UpdatePriority() {
if (!destroyed_)
process_->UpdateClientPriority(this);
}
void RenderWidgetHostImpl::Init() {
DCHECK(process_->IsInitializedAndNotDead());
renderer_initialized_ = true;
SendScreenRects();
SynchronizeVisualProperties();
if (owner_delegate_)
owner_delegate_->RenderWidgetDidInit();
if (view_)
view_->OnRenderWidgetInit();
}
void RenderWidgetHostImpl::InitForFrame() {
DCHECK(process_->IsInitializedAndNotDead());
renderer_initialized_ = true;
if (view_)
view_->OnRenderWidgetInit();
}
void RenderWidgetHostImpl::ShutdownAndDestroyWidget(bool also_delete) {
CancelKeyboardLock();
RejectMouseLockOrUnlockIfNecessary();
if (process_->IsInitializedAndNotDead()) {
// This logic below simulates the routing behavior from when RenderWidget
// associated with RenderViews shared the same routing IDs.
//
// In the original code, the sharing of the routing ID yielded a bastardized
// version of dynamic dispatch wherein the ultimate static code path that
// handled a ViewMsg_Close changed based on if
//
// (a) the RenderWidgetImpl was also a RenderViewImpl
// (b) the RenderViewImpl hooked the message in OnMessageReceived
//
// In the current code, if RenderWidgetImpl IS NOT a RenderViewImpl,
// RenderWidgetHost WILL NOT have a |owner_delegate_| and the message can
// be dispatched directly. This is the simplest case.
//
// If RenderWidgetImpl IS is a RenderViewImpl, then on some platforms
// (seems like only Mac?) RenderViewImpl overrides ViewMsg::OnClose to do
// additional processing before passing it up to RenderWidgetImpl::OnClose.
//
// When it is not overridden, the message delegated up via
// IPC_MESSAGE_UNHANDLED to the RenderWidget's message dispatching.
//
// Basically, there are 2 overlapping hand-written implementations of
// dynamic dispatch occuring: one via IPC_MESSAGE_UNHANDLED, and another
// via calling the super-class method.
//
// TODO(ajwong): Once the routing_id split CL lands, remove one of these
// implementaions of hand-written dyanmic dispatch. The world does not
// need so many implementations of what's effectively "virtual."
if (owner_delegate_) {
owner_delegate_->RenderWidgetDidShutdown();
} else {
// Tell the non-view RendererWidget to close.
bool rv = Send(new ViewMsg_Close(routing_id_));
DCHECK(rv);
}
}
Destroy(also_delete);
}
bool RenderWidgetHostImpl::IsLoading() const {
return is_loading_;
}
bool RenderWidgetHostImpl::OnMessageReceived(const IPC::Message &msg) {
// Only process most messages if the RenderWidget is alive.
if (!renderer_initialized())
return false;
if (owner_delegate_ && owner_delegate_->OnMessageReceived(msg))
return true;
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(RenderWidgetHostImpl, msg)
IPC_MESSAGE_HANDLER(FrameHostMsg_RenderProcessGone, OnRenderProcessGone)
IPC_MESSAGE_HANDLER(FrameHostMsg_HittestData, OnHittestData)
IPC_MESSAGE_HANDLER(ViewHostMsg_Close, OnClose)
IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateScreenRects_ACK,
OnUpdateScreenRectsAck)
IPC_MESSAGE_HANDLER(ViewHostMsg_RequestSetBounds, OnRequestSetBounds)
IPC_MESSAGE_HANDLER(ViewHostMsg_SetTooltipText, OnSetTooltipText)
IPC_MESSAGE_HANDLER(ViewHostMsg_SetCursor, OnSetCursor)
IPC_MESSAGE_HANDLER(ViewHostMsg_AutoscrollStart, OnAutoscrollStart)
IPC_MESSAGE_HANDLER(ViewHostMsg_AutoscrollFling, OnAutoscrollFling)
IPC_MESSAGE_HANDLER(ViewHostMsg_AutoscrollEnd, OnAutoscrollEnd)
IPC_MESSAGE_HANDLER(ViewHostMsg_TextInputStateChanged,
OnTextInputStateChanged)
IPC_MESSAGE_HANDLER(ViewHostMsg_LockMouse, OnLockMouse)
IPC_MESSAGE_HANDLER(ViewHostMsg_UnlockMouse, OnUnlockMouse)
IPC_MESSAGE_HANDLER(ViewHostMsg_SelectionBoundsChanged,
OnSelectionBoundsChanged)
IPC_MESSAGE_HANDLER(ViewHostMsg_FocusedNodeTouched, OnFocusedNodeTouched)
IPC_MESSAGE_HANDLER(DragHostMsg_StartDragging, OnStartDragging)
IPC_MESSAGE_HANDLER(DragHostMsg_UpdateDragCursor, OnUpdateDragCursor)
IPC_MESSAGE_HANDLER(ViewHostMsg_ForceRedrawComplete, OnForceRedrawComplete)
IPC_MESSAGE_HANDLER(ViewHostMsg_FrameSwapMessages,
OnFrameSwapMessagesReceived)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
if (!handled && input_router_ && input_router_->OnMessageReceived(msg))
return true;
if (!handled && view_ && view_->OnMessageReceived(msg))
return true;
return handled;
}
bool RenderWidgetHostImpl::Send(IPC::Message* msg) {
DCHECK(IPC_MESSAGE_ID_CLASS(msg->type()) != InputMsgStart);
return process_->Send(msg);
}
void RenderWidgetHostImpl::SetIsLoading(bool is_loading) {
if (owner_delegate_)
owner_delegate_->RenderWidgetWillSetIsLoading(is_loading);
is_loading_ = is_loading;
if (view_)
view_->SetIsLoading(is_loading);
}
void RenderWidgetHostImpl::WasHidden() {
if (is_hidden_)
return;
RejectMouseLockOrUnlockIfNecessary();
TRACE_EVENT0("renderer_host", "RenderWidgetHostImpl::WasHidden");
is_hidden_ = true;
// Unthrottle SynchronizeVisualProperties IPCs so that the first call after
// show goes through immediately.
visual_properties_ack_pending_ = false;
// Don't bother reporting hung state when we aren't active.
StopInputEventAckTimeout();
// If we have a renderer, then inform it that we are being hidden so it can
// reduce its resource utilization.
Send(new ViewMsg_WasHidden(routing_id_));
// Tell the RenderProcessHost we were hidden.
process_->UpdateClientPriority(this);
bool is_visible = false;
NotificationService::current()->Notify(
NOTIFICATION_RENDER_WIDGET_VISIBILITY_CHANGED,
Source<RenderWidgetHost>(this),
Details<bool>(&is_visible));
for (auto& observer : observers_)
observer.RenderWidgetHostVisibilityChanged(this, false);
}
void RenderWidgetHostImpl::WasShown(bool record_presentation_time) {
if (!is_hidden_)
return;
TRACE_EVENT0("renderer_host", "RenderWidgetHostImpl::WasShown");
is_hidden_ = false;
// If we navigated in background, clear the displayed graphics of the
// previous page before going visible.
ForceFirstFrameAfterNavigationTimeout();
SendScreenRects();
RestartInputEventAckTimeoutIfNecessary();
// Always repaint on restore.
bool needs_repainting = true;
needs_repainting_on_restore_ = false;
Send(new ViewMsg_WasShown(
routing_id_, needs_repainting,
record_presentation_time ? base::TimeTicks::Now() : base::TimeTicks()));
process_->UpdateClientPriority(this);
bool is_visible = true;
NotificationService::current()->Notify(
NOTIFICATION_RENDER_WIDGET_VISIBILITY_CHANGED,
Source<RenderWidgetHost>(this),
Details<bool>(&is_visible));
for (auto& observer : observers_)
observer.RenderWidgetHostVisibilityChanged(this, true);
// It's possible for our size to be out of sync with the renderer. The
// following is one case that leads to this:
// 1. SynchronizeVisualProperties -> Send ViewMsg_SynchronizeVisualProperties
// to render.
// 2. SynchronizeVisualProperties -> do nothing as
// sync_visual_props_ack_pending_ is true
// 3. WasHidden
// 4. OnResizeOrRepaintACK from (1) processed. Does NOT invoke
// SynchronizeVisualProperties as view is hidden. Now renderer/browser out
// of sync with what they think size is.
// By invoking SynchronizeVisualProperties the renderer is updated as
// necessary. SynchronizeVisualProperties does nothing if the sizes are
// already in sync.
//
// TODO: ideally ViewMsg_WasShown would take a size. This way, the renderer
// could handle both the restore and resize at once. This isn't that big a
// deal as RenderWidget::WasShown delays updating, so that the resize from
// SynchronizeVisualProperties is usually processed before the renderer is
// painted.
SynchronizeVisualProperties();
}
#if defined(OS_ANDROID)
void RenderWidgetHostImpl::SetImportance(ChildProcessImportance importance) {
if (importance_ == importance)
return;
importance_ = importance;
process_->UpdateClientPriority(this);
}
#endif
bool RenderWidgetHostImpl::GetVisualProperties(
VisualProperties* visual_properties,
bool* needs_ack) {
*visual_properties = VisualProperties();
GetScreenInfo(&visual_properties->screen_info);
if (delegate_) {
visual_properties->is_fullscreen_granted =
delegate_->IsFullscreenForCurrentTab();
visual_properties->display_mode = delegate_->GetDisplayMode(this);
visual_properties->zoom_level = delegate_->GetPendingPageZoomLevel();
} else {
visual_properties->is_fullscreen_granted = false;
visual_properties->display_mode = blink::kWebDisplayModeBrowser;
visual_properties->zoom_level = 0;
}
visual_properties->auto_resize_enabled = auto_resize_enabled_;
visual_properties->min_size_for_auto_resize = min_size_for_auto_resize_;
visual_properties->max_size_for_auto_resize = max_size_for_auto_resize_;
if (view_) {
visual_properties->new_size = view_->GetRequestedRendererSize();
visual_properties->capture_sequence_number =
view_->GetCaptureSequenceNumber();
visual_properties->compositor_viewport_pixel_size =
view_->GetCompositorViewportPixelSize();
visual_properties->top_controls_height = view_->GetTopControlsHeight();
visual_properties->bottom_controls_height =
view_->GetBottomControlsHeight();
if (IsUseZoomForDSFEnabled()) {
float device_scale = visual_properties->screen_info.device_scale_factor;
visual_properties->top_controls_height *= device_scale;
visual_properties->bottom_controls_height *= device_scale;
}
visual_properties->browser_controls_shrink_blink_size =
view_->DoBrowserControlsShrinkBlinkSize();
visual_properties->visible_viewport_size = view_->GetVisibleViewportSize();
// TODO(ccameron): GetLocalSurfaceId is not synchronized with the device
// scale factor of the surface. Fix this.
viz::LocalSurfaceId local_surface_id = view_->GetLocalSurfaceId();
if (local_surface_id.is_valid())
visual_properties->local_surface_id = local_surface_id;
}
if (screen_orientation_type_for_testing_) {
visual_properties->screen_info.orientation_type =
*screen_orientation_type_for_testing_;
}
if (screen_orientation_angle_for_testing_) {
visual_properties->screen_info.orientation_angle =
*screen_orientation_angle_for_testing_;
}
const bool size_changed =
!old_visual_properties_ ||
old_visual_properties_->auto_resize_enabled !=
visual_properties->auto_resize_enabled ||
(old_visual_properties_->auto_resize_enabled &&
(old_visual_properties_->min_size_for_auto_resize !=
visual_properties->min_size_for_auto_resize ||
old_visual_properties_->max_size_for_auto_resize !=
visual_properties->max_size_for_auto_resize)) ||
(!old_visual_properties_->auto_resize_enabled &&
(old_visual_properties_->new_size != visual_properties->new_size ||
(old_visual_properties_->compositor_viewport_pixel_size.IsEmpty() &&
!visual_properties->compositor_viewport_pixel_size.IsEmpty())));
viz::LocalSurfaceId old_parent_local_surface_id =
old_visual_properties_
? old_visual_properties_->local_surface_id.value_or(
viz::LocalSurfaceId())
: viz::LocalSurfaceId();
viz::LocalSurfaceId new_parent_local_surface_id =
visual_properties->local_surface_id.value_or(viz::LocalSurfaceId());
const bool parent_local_surface_id_changed =
!old_visual_properties_ ||
old_parent_local_surface_id.parent_sequence_number() !=
new_parent_local_surface_id.parent_sequence_number() ||
old_parent_local_surface_id.embed_token() !=
new_parent_local_surface_id.embed_token();
const bool zoom_changed =
!old_visual_properties_ ||
old_visual_properties_->zoom_level != visual_properties->zoom_level;
bool dirty =
zoom_changed || size_changed || parent_local_surface_id_changed ||
old_visual_properties_->screen_info != visual_properties->screen_info ||
old_visual_properties_->compositor_viewport_pixel_size !=
visual_properties->compositor_viewport_pixel_size ||
old_visual_properties_->is_fullscreen_granted !=
visual_properties->is_fullscreen_granted ||
old_visual_properties_->display_mode != visual_properties->display_mode ||
old_visual_properties_->top_controls_height !=
visual_properties->top_controls_height ||
old_visual_properties_->browser_controls_shrink_blink_size !=
visual_properties->browser_controls_shrink_blink_size ||
old_visual_properties_->bottom_controls_height !=
visual_properties->bottom_controls_height ||
old_visual_properties_->visible_viewport_size !=
visual_properties->visible_viewport_size ||
old_visual_properties_->capture_sequence_number !=
visual_properties->capture_sequence_number;
// We should throttle sending updated VisualProperties to the renderer to
// the rate of commit. This ensures we don't overwhelm the renderer with
// visual updates faster than it can keep up. |needs_ack| corresponds to
// cases where a commit is expected.
*needs_ack = g_check_for_pending_visual_properties_ack &&
!visual_properties->auto_resize_enabled &&
!visual_properties->new_size.IsEmpty() &&
!visual_properties->compositor_viewport_pixel_size.IsEmpty() &&
visual_properties->local_surface_id && size_changed;
return dirty;
}
void RenderWidgetHostImpl::SetInitialVisualProperties(
const VisualProperties& visual_properties,
bool needs_ack) {
visual_properties_ack_pending_ = needs_ack;
old_visual_properties_ =
std::make_unique<VisualProperties>(visual_properties);
}
bool RenderWidgetHostImpl::SynchronizeVisualProperties() {
return SynchronizeVisualProperties(false);
}
void RenderWidgetHostImpl::SynchronizeVisualPropertiesIgnoringPendingAck() {
visual_properties_ack_pending_ = false;
SynchronizeVisualProperties();
}
bool RenderWidgetHostImpl::SynchronizeVisualProperties(
bool scroll_focused_node_into_view) {
// Skip if the |delegate_| has already been detached because
// it's web contents is being deleted.
if (visual_properties_ack_pending_ || !process_->IsInitializedAndNotDead() ||
!view_ || !view_->HasSize() || !renderer_initialized_ || !delegate_) {
return false;
}
std::unique_ptr<VisualProperties> visual_properties(new VisualProperties);
bool needs_ack = false;
if (!GetVisualProperties(visual_properties.get(), &needs_ack))
return false;
visual_properties->scroll_focused_node_into_view =
scroll_focused_node_into_view;
ScreenInfo screen_info = visual_properties->screen_info;
bool width_changed =
!old_visual_properties_ || old_visual_properties_->new_size.width() !=
visual_properties->new_size.width();
bool sent_visual_properties = false;
if (Send(new ViewMsg_SynchronizeVisualProperties(routing_id_,
*visual_properties))) {
visual_properties_ack_pending_ = needs_ack;
old_visual_properties_.swap(visual_properties);
sent_visual_properties = true;
}
if (delegate_)
delegate_->RenderWidgetWasResized(this, screen_info, width_changed);
return sent_visual_properties;
}
void RenderWidgetHostImpl::GotFocus() {
Focus();
if (owner_delegate_)
owner_delegate_->RenderWidgetGotFocus();
if (delegate_)
delegate_->RenderWidgetGotFocus(this);
}
void RenderWidgetHostImpl::LostFocus() {
Blur();
if (owner_delegate_)
owner_delegate_->RenderWidgetLostFocus();
if (delegate_)
delegate_->RenderWidgetLostFocus(this);
}
void RenderWidgetHostImpl::Focus() {
RenderWidgetHostImpl* focused_widget =
delegate_ ? delegate_->GetRenderWidgetHostWithPageFocus() : nullptr;
if (!focused_widget)
focused_widget = this;
focused_widget->SetPageFocus(true);
}
void RenderWidgetHostImpl::Blur() {
RenderWidgetHostImpl* focused_widget =
delegate_ ? delegate_->GetRenderWidgetHostWithPageFocus() : nullptr;
if (!focused_widget)
focused_widget = this;
focused_widget->SetPageFocus(false);
}
void RenderWidgetHostImpl::SetPageFocus(bool focused) {
is_focused_ = focused;
if (!focused) {
// If there is a pending mouse lock request, we don't want to reject it at
// this point. The user can switch focus back to this view and approve the
// request later.
if (IsMouseLocked())
view_->UnlockMouse();
if (IsKeyboardLocked())
UnlockKeyboard();
if (auto* touch_emulator = GetExistingTouchEmulator())
touch_emulator->CancelTouch();
} else if (keyboard_lock_allowed_) {
LockKeyboard();
}
GetWidgetInputHandler()->SetFocus(focused);
// Also send page-level focus state to other SiteInstances involved in
// rendering the current FrameTree.
if (RenderViewHost::From(this) && delegate_)
delegate_->ReplicatePageFocus(focused);
}
void RenderWidgetHostImpl::LostCapture() {
if (auto* touch_emulator = GetExistingTouchEmulator())
touch_emulator->CancelTouch();
GetWidgetInputHandler()->MouseCaptureLost();
if (delegate_)
delegate_->LostCapture(this);
}
void RenderWidgetHostImpl::SetActive(bool active) {
Send(new ViewMsg_SetActive(routing_id_, active));
}
void RenderWidgetHostImpl::LostMouseLock() {
if (delegate_)
delegate_->LostMouseLock(this);
}
void RenderWidgetHostImpl::SendMouseLockLost() {
Send(new ViewMsg_MouseLockLost(routing_id_));
}
void RenderWidgetHostImpl::ViewDestroyed() {
CancelKeyboardLock();
RejectMouseLockOrUnlockIfNecessary();
// TODO(evanm): tracking this may no longer be necessary;
// eliminate this function if so.
SetView(nullptr);
}
#if defined(OS_MACOSX)
void RenderWidgetHostImpl::PauseForPendingResizeOrRepaints() {
TRACE_EVENT0("browser",
"RenderWidgetHostImpl::PauseForPendingResizeOrRepaints");
// Do not pause if the view is hidden.
if (is_hidden())
return;
// Do not pause if there is not a paint or resize already coming.
if (!visual_properties_ack_pending_)
return;
// OnResizeOrRepaintACK posts a task to the default TaskRunner in auto-resize,
// which is not the one that we pump in this nested loop, causing unexpected
// behavior. It very well may be safe to do that post task to the TaskRunner
// from ui::WindowResizeHelperMac (which we pump), but don't do that until
// it is known to be safe.
if (auto_resize_enabled_)
return;
if (!view_)
return;
// How long to (synchronously) wait for the renderer to respond with a
// new frame when our current frame doesn't exist or is the wrong size.
// This timeout impacts the "choppiness" of our window resize.
const int kPaintMsgTimeoutMS = 167;
TRACE_EVENT0("renderer_host", "RenderWidgetHostImpl::WaitForSurface");
// We should not be asked to paint while we are hidden. If we are hidden,
// then it means that our consumer failed to call WasShown.
DCHECK(!is_hidden_) << "WaitForSurface called while hidden!";
// We should never be called recursively; this can theoretically lead to
// infinite recursion and almost certainly leads to lower performance.
DCHECK(!in_get_backing_store_) << "WaitForSurface called recursively!";
base::AutoReset<bool> auto_reset_in_get_backing_store(
&in_get_backing_store_, true);
// We might have a surface that we can use already.
if (!view_->ShouldContinueToPauseForFrame())
return;
// Pump a nested run loop until we time out or get a frame of the right
// size.
TimeTicks start_time = clock_->NowTicks();
TimeDelta time_left = TimeDelta::FromMilliseconds(kPaintMsgTimeoutMS);
TimeTicks timeout_time = start_time + time_left;
while (1) {
TRACE_EVENT0("renderer_host", "WaitForSurface::WaitForSingleTaskToRun");
if (ui::WindowResizeHelperMac::Get()->WaitForSingleTaskToRun(time_left)) {
if (!view_->ShouldContinueToPauseForFrame())
break;
}
time_left = timeout_time - clock_->NowTicks();
if (time_left <= TimeDelta::FromSeconds(0)) {
TRACE_EVENT0("renderer_host", "WaitForSurface::Timeout");
break;
}
}
}
#endif
bool RenderWidgetHostImpl::RequestRepaintForTesting() {
if (!view_)
return false;
return view_->RequestRepaintForTesting();
}
void RenderWidgetHostImpl::ProcessIgnoreInputEventsChanged(
bool ignore_input_events) {
if (ignore_input_events)
StopInputEventAckTimeout();
else
RestartInputEventAckTimeoutIfNecessary();
}
void RenderWidgetHostImpl::StartInputEventAckTimeout(TimeDelta delay) {
if (!input_event_ack_timeout_)
return;
input_event_ack_timeout_->Start(delay);
input_event_ack_start_time_ = clock_->NowTicks();
}
void RenderWidgetHostImpl::RestartInputEventAckTimeoutIfNecessary() {
if (input_event_ack_timeout_ && in_flight_event_count_ > 0 && !is_hidden_)
input_event_ack_timeout_->Restart(hung_renderer_delay_);
}
bool RenderWidgetHostImpl::IsCurrentlyUnresponsive() const {
return is_unresponsive_;
}
void RenderWidgetHostImpl::StopInputEventAckTimeout() {
if (input_event_ack_timeout_)
input_event_ack_timeout_->Stop();
if (!input_event_ack_start_time_.is_null()) {
base::TimeDelta elapsed = clock_->NowTicks() - input_event_ack_start_time_;
const base::TimeDelta kMinimumHangTimeToReport =
base::TimeDelta::FromSeconds(5);
if (elapsed >= kMinimumHangTimeToReport)
UMA_HISTOGRAM_LONG_TIMES("Renderer.Hung.Duration", elapsed);
input_event_ack_start_time_ = TimeTicks();
}
RendererIsResponsive();
}
void RenderWidgetHostImpl::DidNavigate(uint32_t next_source_id) {
current_content_source_id_ = next_source_id;
did_receive_first_frame_after_navigation_ = false;
if (enable_surface_synchronization_) {
// Resize messages before navigation are not acked, so reset
// |visual_properties_ack_pending_| and make sure the next resize will be
// acked if the last resize before navigation was supposed to be acked.
visual_properties_ack_pending_ = false;
if (view_)
view_->DidNavigate();
} else {
// It is possible for a compositor frame to arrive before the browser is
// notified about the page being committed, in which case no timer is
// necessary.
if (last_received_content_source_id_ >= current_content_source_id_)
return;
}
if (!new_content_rendering_timeout_)
return;
new_content_rendering_timeout_->Start(new_content_rendering_delay_);
}
void RenderWidgetHostImpl::ForwardMouseEvent(const WebMouseEvent& mouse_event) {
// VrController moves the pointer during the scrolling and fling. To ensure
// that scroll performance is not affected we drop mouse events during
// scroll/fling.
if (GetView()->IsInVR() &&
(is_in_gesture_scroll_[blink::kWebGestureDeviceTouchpad] ||
is_in_touchpad_gesture_fling_)) {
return;
}
ForwardMouseEventWithLatencyInfo(mouse_event,
ui::LatencyInfo(ui::SourceEventType::MOUSE));
if (owner_delegate_)
owner_delegate_->RenderWidgetDidForwardMouseEvent(mouse_event);
}
void RenderWidgetHostImpl::ForwardMouseEventWithLatencyInfo(
const blink::WebMouseEvent& mouse_event,
const ui::LatencyInfo& latency) {
TRACE_EVENT2("input", "RenderWidgetHostImpl::ForwardMouseEvent", "x",
mouse_event.PositionInWidget().x, "y",
mouse_event.PositionInWidget().y);
DCHECK_GE(mouse_event.GetType(), blink::WebInputEvent::kMouseTypeFirst);
DCHECK_LE(mouse_event.GetType(), blink::WebInputEvent::kMouseTypeLast);
for (size_t i = 0; i < mouse_event_callbacks_.size(); ++i) {
if (mouse_event_callbacks_[i].Run(mouse_event))
return;
}
if (ShouldDropInputEvents())
return;
auto* touch_emulator = GetExistingTouchEmulator();
if (touch_emulator &&
touch_emulator->HandleMouseEvent(mouse_event, GetView())) {
return;
}
MouseEventWithLatencyInfo mouse_with_latency(mouse_event, latency);
DispatchInputEventWithLatencyInfo(mouse_event, &mouse_with_latency.latency);
input_router_->SendMouseEvent(mouse_with_latency);
}
void RenderWidgetHostImpl::ForwardWheelEvent(
const WebMouseWheelEvent& wheel_event) {
ForwardWheelEventWithLatencyInfo(wheel_event,
ui::LatencyInfo(ui::SourceEventType::WHEEL));
}
void RenderWidgetHostImpl::ForwardWheelEventWithLatencyInfo(
const blink::WebMouseWheelEvent& wheel_event,
const ui::LatencyInfo& latency) {
TRACE_EVENT2("input", "RenderWidgetHostImpl::ForwardWheelEvent", "dx",
wheel_event.delta_x, "dy", wheel_event.delta_y);
if (ShouldDropInputEvents())
return;
auto* touch_emulator = GetExistingTouchEmulator();
if (touch_emulator && touch_emulator->HandleMouseWheelEvent(wheel_event))
return;
MouseWheelEventWithLatencyInfo wheel_with_latency(wheel_event, latency);
DispatchInputEventWithLatencyInfo(wheel_event, &wheel_with_latency.latency);
input_router_->SendWheelEvent(wheel_with_latency);
}
void RenderWidgetHostImpl::ForwardEmulatedGestureEvent(
const blink::WebGestureEvent& gesture_event) {
ForwardGestureEvent(gesture_event);
}
void RenderWidgetHostImpl::ForwardGestureEvent(
const blink::WebGestureEvent& gesture_event) {
ForwardGestureEventWithLatencyInfo(
gesture_event,
ui::WebInputEventTraits::CreateLatencyInfoForWebGestureEvent(
gesture_event));
}
void RenderWidgetHostImpl::ForwardGestureEventWithLatencyInfo(
const blink::WebGestureEvent& gesture_event,
const ui::LatencyInfo& latency) {
TRACE_EVENT1("input", "RenderWidgetHostImpl::ForwardGestureEvent", "type",
WebInputEvent::GetName(gesture_event.GetType()));
// Early out if necessary, prior to performing latency logic.
if (ShouldDropInputEvents())
return;
bool scroll_update_needs_wrapping = false;
if (gesture_event.GetType() == blink::WebInputEvent::kGestureScrollBegin) {
// When a user starts scrolling while a fling is active, the GSB will arrive
// when is_in_gesture_scroll_[gesture_event.SourceDevice()] is still true.
// This is because the fling controller defers handling the GFC event
// arrived before the GSB and doesn't send a GSE to end the fling; Instead,
// it waits for a second GFS to arrive and boost the current active fling if
// possible. While GFC handling is deferred the controller suppresses the
// GSB and GSU events instead of sending them to the renderer and continues
// to progress the fling. So, the renderer doesn't receive two GSB events
// without any GSE in between.
DCHECK(!is_in_gesture_scroll_[gesture_event.SourceDevice()] ||
FlingCancellationIsDeferred());
is_in_gesture_scroll_[gesture_event.SourceDevice()] = true;
} else if (gesture_event.GetType() ==
blink::WebInputEvent::kGestureScrollEnd) {
DCHECK(is_in_gesture_scroll_[gesture_event.SourceDevice()]);
is_in_gesture_scroll_[gesture_event.SourceDevice()] = false;
is_in_touchpad_gesture_fling_ = false;
if (view_)
view_->set_is_currently_scrolling_viewport(false);
} else if (gesture_event.GetType() ==
blink::WebInputEvent::kGestureFlingStart) {
if (gesture_event.SourceDevice() ==
blink::WebGestureDevice::kWebGestureDeviceTouchpad) {
// TODO(sahel): Remove the VR specific case when motion events are used
// for Android VR event processing and VR touchpad scrolling is handled by
// sending wheel events rather than directly injecting Gesture Scroll
// Events. https://crbug.com/797322
if (GetView()->IsInVR()) {
// Regardless of the state of the wheel scroll latching
// WebContentsEventForwarder doesn't inject any GSE events before GFS.
DCHECK(is_in_gesture_scroll_[gesture_event.SourceDevice()]);
// Reset the is_in_gesture_scroll since while scrolling in Android VR
// the first wheel event sent by the FlingController will cause a GSB
// generation in MouseWheelEventQueue. This is because GSU events before
// the GFS are directly injected to RWHI rather than being generated
// from wheel events in MouseWheelEventQueue.
is_in_gesture_scroll_[gesture_event.SourceDevice()] = false;
} else {
// No GSE is sent before GFS, so is_in_gesture_scroll must be true.
// TODO(sahel): This often gets tripped on Debug builds in ChromeOS
// indicating some kind of gesture event ordering race.
// https://crbug.com/821237.
// DCHECK(is_in_gesture_scroll_[gesture_event.SourceDevice()]);
// The FlingController handles GFS with touchpad source and sends wheel
// events to progress the fling, the wheel events will get processed by
// the MouseWheelEventQueue and GSU events with inertial phase will be
// sent to the renderer. is_in_gesture_scroll must stay true till the
// fling progress is finished. Then the FlingController will generate
// and send a wheel event with phaseEnded. MouseWheelEventQueue will
// process the wheel event to generate and send a GSE which shows the
// end of a scroll sequence.
}
is_in_touchpad_gesture_fling_ = true;
} else {
DCHECK(is_in_gesture_scroll_[gesture_event.SourceDevice()]);
// The FlingController handles GFS with touchscreen source and sends GSU
// events with inertial state to the renderer to progress the fling.
// is_in_gesture_scroll must stay true till the fling progress is
// finished. Then the FlingController will generate and send a GSE which
// shows the end of a scroll sequence and resets is_in_gesture_scroll_.
}
}
// TODO(wjmaclean) Remove the code for supporting resending gesture events
// when WebView transitions to OOPIF and BrowserPlugin is removed.
// http://crbug.com/533069
scroll_update_needs_wrapping =
gesture_event.GetType() == blink::WebInputEvent::kGestureScrollUpdate &&
gesture_event.resending_plugin_id != -1 &&
!is_in_gesture_scroll_[gesture_event.SourceDevice()];
// TODO(crbug.com/544782): Fix WebViewGuestScrollTest.TestGuestWheelScrolls-
// Bubble to test the resending logic of gesture events.
if (scroll_update_needs_wrapping) {
ForwardGestureEventWithLatencyInfo(
CreateScrollBeginForWrapping(gesture_event),
ui::WebInputEventTraits::CreateLatencyInfoForWebGestureEvent(
gesture_event));
}
// Delegate must be non-null, due to |ShouldDropInputEvents()| test.
if (delegate_->PreHandleGestureEvent(gesture_event))
return;
GestureEventWithLatencyInfo gesture_with_latency(gesture_event, latency);
DispatchInputEventWithLatencyInfo(gesture_event,
&gesture_with_latency.latency);
input_router_->SendGestureEvent(gesture_with_latency);
if (scroll_update_needs_wrapping) {
ForwardGestureEventWithLatencyInfo(
CreateScrollEndForWrapping(gesture_event),
ui::WebInputEventTraits::CreateLatencyInfoForWebGestureEvent(
gesture_event));
}
}
void RenderWidgetHostImpl::ForwardEmulatedTouchEvent(
const blink::WebTouchEvent& touch_event,
RenderWidgetHostViewBase* target) {
TRACE_EVENT0("input", "RenderWidgetHostImpl::ForwardEmulatedTouchEvent");
ForwardTouchEventWithLatencyInfo(touch_event,
ui::LatencyInfo(ui::SourceEventType::TOUCH));
}
void RenderWidgetHostImpl::ForwardTouchEventWithLatencyInfo(
const blink::WebTouchEvent& touch_event,
const ui::LatencyInfo& latency) {
TRACE_EVENT0("input", "RenderWidgetHostImpl::ForwardTouchEvent");
// Always forward TouchEvents for touch stream consistency. They will be
// ignored if appropriate in FilterInputEvent().
TouchEventWithLatencyInfo touch_with_latency(touch_event, latency);
DispatchInputEventWithLatencyInfo(touch_event, &touch_with_latency.latency);
input_router_->SendTouchEvent(touch_with_latency);
}
void RenderWidgetHostImpl::ForwardKeyboardEvent(
const NativeWebKeyboardEvent& key_event) {
ui::LatencyInfo latency_info;
if (key_event.GetType() == WebInputEvent::kRawKeyDown ||
key_event.GetType() == WebInputEvent::kChar) {
latency_info.set_source_event_type(ui::SourceEventType::KEY_PRESS);
}
ForwardKeyboardEventWithLatencyInfo(key_event, latency_info);
}
void RenderWidgetHostImpl::ForwardKeyboardEventWithLatencyInfo(
const NativeWebKeyboardEvent& key_event,
const ui::LatencyInfo& latency) {
ForwardKeyboardEventWithCommands(key_event, latency, nullptr, nullptr);
}
void RenderWidgetHostImpl::ForwardKeyboardEventWithCommands(
const NativeWebKeyboardEvent& key_event,
const ui::LatencyInfo& latency,
const std::vector<EditCommand>* commands,
bool* update_event) {
TRACE_EVENT0("input", "RenderWidgetHostImpl::ForwardKeyboardEvent");
if (owner_delegate_ &&
!owner_delegate_->MayRenderWidgetForwardKeyboardEvent(key_event)) {
return;
}
if (ShouldDropInputEvents())
return;
if (!process_->IsInitializedAndNotDead())
return;
// First, let keypress listeners take a shot at handling the event. If a
// listener handles the event, it should not be propagated to the renderer.
if (KeyPressListenersHandleEvent(key_event)) {
// Some keypresses that are accepted by the listener may be followed by Char
// and KeyUp events, which should be ignored.
if (key_event.GetType() == WebKeyboardEvent::kRawKeyDown)
suppress_events_until_keydown_ = true;
return;
}
// Double check the type to make sure caller hasn't sent us nonsense that
// will mess up our key queue.
if (!WebInputEvent::IsKeyboardEventType(key_event.GetType()))
return;
if (suppress_events_until_keydown_) {
// If the preceding RawKeyDown event was handled by the browser, then we
// need to suppress all events generated by it until the next RawKeyDown or
// KeyDown event.
if (key_event.GetType() == WebKeyboardEvent::kKeyUp ||
key_event.GetType() == WebKeyboardEvent::kChar)
return;
DCHECK(key_event.GetType() == WebKeyboardEvent::kRawKeyDown ||
key_event.GetType() == WebKeyboardEvent::kKeyDown);
suppress_events_until_keydown_ = false;
}
bool is_shortcut = false;
// Only pre-handle the key event if it's not handled by the input method.
if (delegate_ && !key_event.skip_in_browser) {
// We need to set |suppress_events_until_keydown_| to true if
// PreHandleKeyboardEvent() handles the event, but |this| may already be
// destroyed at that time. So set |suppress_events_until_keydown_| true
// here, then revert it afterwards when necessary.
if (key_event.GetType() == WebKeyboardEvent::kRawKeyDown)
suppress_events_until_keydown_ = true;
// Tab switching/closing accelerators aren't sent to the renderer to avoid
// a hung/malicious renderer from interfering.
switch (delegate_->PreHandleKeyboardEvent(key_event)) {
case KeyboardEventProcessingResult::HANDLED:
return;
#if defined(USE_AURA)
case KeyboardEventProcessingResult::HANDLED_DONT_UPDATE_EVENT:
if (update_event)
*update_event = false;
return;
#endif
case KeyboardEventProcessingResult::NOT_HANDLED:
break;
case KeyboardEventProcessingResult::NOT_HANDLED_IS_SHORTCUT:
is_shortcut = true;
break;
}
if (key_event.GetType() == WebKeyboardEvent::kRawKeyDown)
suppress_events_until_keydown_ = false;
}
auto* touch_emulator = GetExistingTouchEmulator();
if (touch_emulator && touch_emulator->HandleKeyboardEvent(key_event))
return;
NativeWebKeyboardEventWithLatencyInfo key_event_with_latency(key_event,
latency);
key_event_with_latency.event.is_browser_shortcut = is_shortcut;
DispatchInputEventWithLatencyInfo(key_event, &key_event_with_latency.latency);
// TODO(foolip): |InputRouter::SendKeyboardEvent()| may filter events, in
// which the commands will be treated as belonging to the next key event.
// WidgetInputHandler::SetEditCommandsForNextKeyEvent should only be sent if
// WidgetInputHandler::DispatchEvent is, but has to be sent first.
// https://crbug.com/684298
if (commands && !commands->empty()) {
GetWidgetInputHandler()->SetEditCommandsForNextKeyEvent(*commands);
}
input_router_->SendKeyboardEvent(key_event_with_latency);
}
void RenderWidgetHostImpl::QueueSyntheticGesture(
std::unique_ptr<SyntheticGesture> synthetic_gesture,
base::OnceCallback<void(SyntheticGesture::Result)> on_complete) {
if (!synthetic_gesture_controller_ && view_) {
synthetic_gesture_controller_ =
std::make_unique<SyntheticGestureController>(
this, view_->CreateSyntheticGestureTarget());
}
if (synthetic_gesture_controller_) {
synthetic_gesture_controller_->QueueSyntheticGesture(
std::move(synthetic_gesture), std::move(on_complete));
}
}
void RenderWidgetHostImpl::SetCursor(const WebCursor& cursor) {
if (!view_)
return;
view_->UpdateCursor(cursor);
}
void RenderWidgetHostImpl::ShowContextMenuAtPoint(
const gfx::Point& point,
const ui::MenuSourceType source_type) {
Send(new ViewMsg_ShowContextMenu(GetRoutingID(), source_type, point));
}
void RenderWidgetHostImpl::SendCursorVisibilityState(bool is_visible) {
GetWidgetInputHandler()->CursorVisibilityChanged(is_visible);
}
// static
void RenderWidgetHostImpl::DisableResizeAckCheckForTesting() {
g_check_for_pending_visual_properties_ack = false;
}
void RenderWidgetHostImpl::AddKeyPressEventCallback(
const KeyPressEventCallback& callback) {
key_press_event_callbacks_.push_back(callback);
}
void RenderWidgetHostImpl::RemoveKeyPressEventCallback(
const KeyPressEventCallback& callback) {
for (size_t i = 0; i < key_press_event_callbacks_.size(); ++i) {
if (key_press_event_callbacks_[i].Equals(callback)) {
key_press_event_callbacks_.erase(
key_press_event_callbacks_.begin() + i);
return;
}
}
}
void RenderWidgetHostImpl::AddMouseEventCallback(
const MouseEventCallback& callback) {
mouse_event_callbacks_.push_back(callback);
}
void RenderWidgetHostImpl::RemoveMouseEventCallback(
const MouseEventCallback& callback) {
for (size_t i = 0; i < mouse_event_callbacks_.size(); ++i) {
if (mouse_event_callbacks_[i].Equals(callback)) {
mouse_event_callbacks_.erase(mouse_event_callbacks_.begin() + i);
return;
}
}
}
void RenderWidgetHostImpl::AddInputEventObserver(
RenderWidgetHost::InputEventObserver* observer) {
if (!input_event_observers_.HasObserver(observer))
input_event_observers_.AddObserver(observer);
}
void RenderWidgetHostImpl::RemoveInputEventObserver(
RenderWidgetHost::InputEventObserver* observer) {
input_event_observers_.RemoveObserver(observer);
}
void RenderWidgetHostImpl::AddObserver(RenderWidgetHostObserver* observer) {
observers_.AddObserver(observer);
}
void RenderWidgetHostImpl::RemoveObserver(RenderWidgetHostObserver* observer) {
observers_.RemoveObserver(observer);
}
void RenderWidgetHostImpl::GetScreenInfo(ScreenInfo* result) {
TRACE_EVENT0("renderer_host", "RenderWidgetHostImpl::GetScreenInfo");
if (view_)
view_->GetScreenInfo(result);
else
DisplayUtil::GetDefaultScreenInfo(result);
// TODO(sievers): find a way to make this done another way so the method
// can be const.
if (IsUseZoomForDSFEnabled())
input_router_->SetDeviceScaleFactor(result->device_scale_factor);
}
void RenderWidgetHostImpl::DragTargetDragEnter(
const DropData& drop_data,
const gfx::PointF& client_pt,
const gfx::PointF& screen_pt,
WebDragOperationsMask operations_allowed,
int key_modifiers) {
DragTargetDragEnterWithMetaData(DropDataToMetaData(drop_data), client_pt,
screen_pt, operations_allowed, key_modifiers);
}
void RenderWidgetHostImpl::DragTargetDragEnterWithMetaData(
const std::vector<DropData::Metadata>& metadata,
const gfx::PointF& client_pt,
const gfx::PointF& screen_pt,
WebDragOperationsMask operations_allowed,
int key_modifiers) {
Send(new DragMsg_TargetDragEnter(GetRoutingID(), metadata, client_pt,
screen_pt, operations_allowed,
key_modifiers));
}
void RenderWidgetHostImpl::DragTargetDragOver(
const gfx::PointF& client_pt,
const gfx::PointF& screen_pt,
WebDragOperationsMask operations_allowed,
int key_modifiers) {
Send(new DragMsg_TargetDragOver(GetRoutingID(), client_pt, screen_pt,
operations_allowed, key_modifiers));
}
void RenderWidgetHostImpl::DragTargetDragLeave(
const gfx::PointF& client_point,
const gfx::PointF& screen_point) {
Send(new DragMsg_TargetDragLeave(GetRoutingID(), client_point, screen_point));
}
void RenderWidgetHostImpl::DragTargetDrop(const DropData& drop_data,
const gfx::PointF& client_pt,
const gfx::PointF& screen_pt,
int key_modifiers) {
DropData drop_data_with_permissions(drop_data);
GrantFileAccessFromDropData(&drop_data_with_permissions);
Send(new DragMsg_TargetDrop(GetRoutingID(), drop_data_with_permissions,
client_pt, screen_pt, key_modifiers));
}
void RenderWidgetHostImpl::DragSourceEndedAt(
const gfx::PointF& client_pt,
const gfx::PointF& screen_pt,
blink::WebDragOperation operation) {
Send(new DragMsg_SourceEnded(GetRoutingID(),
client_pt,
screen_pt,
operation));
}
void RenderWidgetHostImpl::DragSourceSystemDragEnded() {
Send(new DragMsg_SourceSystemDragEnded(GetRoutingID()));
}
void RenderWidgetHostImpl::FilterDropData(DropData* drop_data) {
#if DCHECK_IS_ON()
drop_data->view_id = GetRoutingID();
#endif // DCHECK_IS_ON()
GetProcess()->FilterURL(true, &drop_data->url);
if (drop_data->did_originate_from_renderer) {
drop_data->filenames.clear();
}
}
void RenderWidgetHostImpl::SetCursor(const CursorInfo& cursor_info) {
WebCursor cursor;
cursor.InitFromCursorInfo(cursor_info);
SetCursor(cursor);
}
RenderProcessHost::Priority RenderWidgetHostImpl::GetPriority() {
RenderProcessHost::Priority priority = {
is_hidden_,
frame_depth_,
intersects_viewport_,
#if defined(OS_ANDROID)
importance_,
#endif
};
if (owner_delegate_ &&
!owner_delegate_->ShouldContributePriorityToProcess()) {
priority.is_hidden = true;
priority.frame_depth = RenderProcessHostImpl::kMaxFrameDepthForPriority;
#if defined(OS_ANDROID)
priority.importance = ChildProcessImportance::NORMAL;
#endif
}
return priority;
}
mojom::WidgetInputHandler* RenderWidgetHostImpl::GetWidgetInputHandler() {
if (associated_widget_input_handler_)
return associated_widget_input_handler_.get();
if (widget_input_handler_)
return widget_input_handler_.get();
// TODO(dtapuska): Remove the need for the unbound interface. It is
// possible that a RVHI may make calls to a WidgetInputHandler when
// the main frame is remote. This is because of ordering issues during
// widget shutdown, so we present an UnboundWidgetInputHandler had
// DLOGS the message calls.
return g_unbound_input_handler.Pointer();
}
void RenderWidgetHostImpl::NotifyScreenInfoChanged() {
// The resize message (which may not happen immediately) will carry with it
// the screen info as well as the new size (if the screen has changed scale
// factor).
SynchronizeVisualProperties();
// The device scale factor will be same for all the views contained by the
// MainFrame, so just set it once.
if (delegate_ && !delegate_->IsWidgetForMainFrame(this))
return;
// The delegate may not have an input event router in tests.
if (auto* touch_emulator = GetExistingTouchEmulator())
touch_emulator->SetDeviceScaleFactor(GetScaleFactorForView(view_.get()));
}
void RenderWidgetHostImpl::GetSnapshotFromBrowser(
const GetSnapshotFromBrowserCallback& callback,
bool from_surface) {
int snapshot_id = next_browser_snapshot_id_++;
if (from_surface) {
pending_surface_browser_snapshots_.insert(
std::make_pair(snapshot_id, callback));
Send(new ViewMsg_ForceRedraw(GetRoutingID(), snapshot_id));
return;
}
#if defined(OS_MACOSX)
// MacOS version of underlying GrabViewSnapshot() blocks while
// display/GPU are in a power-saving mode, so make sure display
// does not go to sleep for the duration of reading a snapshot.
if (pending_browser_snapshots_.empty())
GetWakeLock()->RequestWakeLock();
#endif
// TODO(nzolghadr): Remove the duplication here and the if block just above.
pending_browser_snapshots_.insert(std::make_pair(snapshot_id, callback));
Send(new ViewMsg_ForceRedraw(GetRoutingID(), snapshot_id));
}
void RenderWidgetHostImpl::SelectionChanged(const base::string16& text,
uint32_t offset,
const gfx::Range& range) {
if (view_)
view_->SelectionChanged(text, static_cast<size_t>(offset), range);
}
void RenderWidgetHostImpl::OnSelectionBoundsChanged(
const ViewHostMsg_SelectionBounds_Params& params) {
if (view_)
view_->SelectionBoundsChanged(params);
}
void RenderWidgetHostImpl::OnFocusedNodeTouched(bool editable) {
if (delegate_)
delegate_->FocusedNodeTouched(editable);
}
void RenderWidgetHostImpl::OnStartDragging(
const DropData& drop_data,
blink::WebDragOperationsMask drag_operations_mask,
const SkBitmap& bitmap,
const gfx::Vector2d& bitmap_offset_in_dip,
const DragEventSourceInfo& event_info) {
RenderViewHostDelegateView* view = delegate_->GetDelegateView();
if (!view || !GetView()) {
// Need to clear drag and drop state in blink.
DragSourceSystemDragEnded();
return;
}
DropData filtered_data(drop_data);
RenderProcessHost* process = GetProcess();
ChildProcessSecurityPolicyImpl* policy =
ChildProcessSecurityPolicyImpl::GetInstance();
// Allow drag of Javascript URLs to enable bookmarklet drag to bookmark bar.
if (!filtered_data.url.SchemeIs(url::kJavaScriptScheme))
process->FilterURL(true, &filtered_data.url);
process->FilterURL(false, &filtered_data.html_base_url);
// Filter out any paths that the renderer didn't have access to. This prevents
// the following attack on a malicious renderer:
// 1. StartDragging IPC sent with renderer-specified filesystem paths that it
// doesn't have read permissions for.
// 2. We initiate a native DnD operation.
// 3. DnD operation immediately ends since mouse is not held down. DnD events
// still fire though, which causes read permissions to be granted to the
// renderer for any file paths in the drop.
filtered_data.filenames.clear();
for (const auto& file_info : drop_data.filenames) {
if (policy->CanReadFile(GetProcess()->GetID(), file_info.path))
filtered_data.filenames.push_back(file_info);
}
storage::FileSystemContext* file_system_context =
GetProcess()->GetStoragePartition()->GetFileSystemContext();
filtered_data.file_system_files.clear();
for (size_t i = 0; i < drop_data.file_system_files.size(); ++i) {
storage::FileSystemURL file_system_url =
file_system_context->CrackURL(drop_data.file_system_files[i].url);
if (policy->CanReadFileSystemFile(GetProcess()->GetID(), file_system_url))
filtered_data.file_system_files.push_back(drop_data.file_system_files[i]);
}
float scale = GetScaleFactorForView(GetView());
gfx::ImageSkia image(gfx::ImageSkiaRep(bitmap, scale));
view->StartDragging(filtered_data, drag_operations_mask, image,
bitmap_offset_in_dip, event_info, this);
}
void RenderWidgetHostImpl::OnUpdateDragCursor(WebDragOperation current_op) {
if (delegate_->OnUpdateDragCursor())
return;
RenderViewHostDelegateView* view = delegate_->GetDelegateView();
if (view)
view->UpdateDragCursor(current_op);
}
void RenderWidgetHostImpl::OnFrameSwapMessagesReceived(
uint32_t frame_token,
std::vector<IPC::Message> messages) {
frame_token_message_queue_->OnFrameSwapMessagesReceived(frame_token,
std::move(messages));
}
void RenderWidgetHostImpl::OnForceRedrawComplete(int snapshot_id) {
#if defined(OS_MACOSX) || defined(OS_WIN)
// On Mac, when using CoreAnimation, or Win32 when using GDI, there is a
// delay between when content is drawn to the screen, and when the
// snapshot will actually pick up that content. Insert a manual delay of
// 1/6th of a second (to simulate 10 frames at 60 fps) before actually
// taking the snapshot.
base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
FROM_HERE,
base::BindOnce(&RenderWidgetHostImpl::WindowSnapshotReachedScreen,
weak_factory_.GetWeakPtr(), snapshot_id),
TimeDelta::FromSecondsD(1. / 6));
#else
WindowSnapshotReachedScreen(snapshot_id);
#endif
}
void RenderWidgetHostImpl::RendererExited(base::TerminationStatus status,
int exit_code) {
if (!renderer_initialized_)
return;
// Clear this flag so that we can ask the next renderer for composition
// updates.
monitoring_composition_info_ = false;
// Clearing this flag causes us to re-create the renderer when recovering
// from a crashed renderer.
renderer_initialized_ = false;
waiting_for_screen_rects_ack_ = false;
// Must reset these to ensure that keyboard events work with a new renderer.
suppress_events_until_keydown_ = false;
// Reset some fields in preparation for recovering from a crash.
ResetSentVisualProperties();
// After the renderer crashes, the view is destroyed and so the
// RenderWidgetHost cannot track its visibility anymore. We assume such
// RenderWidgetHost to be invisible for the sake of internal accounting - be
// careful about changing this - see http://crbug.com/401859 and
// http://crbug.com/522795.
//
// We need to at least make sure that the RenderProcessHost is notified about
// the |is_hidden_| change, so that the renderer will have correct visibility
// set when respawned.
if (!is_hidden_) {
is_hidden_ = true;
if (!destroyed_)
process_->UpdateClientPriority(this);
}
// Reset this to ensure the hung renderer mechanism is working properly.
in_flight_event_count_ = 0;
StopInputEventAckTimeout();
if (view_) {
view_->RenderProcessGone(status, exit_code);
view_.reset(); // The View should be deleted by RenderProcessGone.
}
// Reconstruct the input router to ensure that it has fresh state for a new
// renderer. Otherwise it may be stuck waiting for the old renderer to ack an
// event. (In particular, the above call to view_->RenderProcessGone will
// destroy the aura window, which may dispatch a synthetic mouse move.)
SetupInputRouter();
synthetic_gesture_controller_.reset();
current_content_source_id_ = 0;
frame_token_message_queue_->Reset();
}
void RenderWidgetHostImpl::UpdateTextDirection(WebTextDirection direction) {
text_direction_updated_ = true;
text_direction_ = direction;
}
void RenderWidgetHostImpl::CancelUpdateTextDirection() {
if (text_direction_updated_)
text_direction_canceled_ = true;
}
void RenderWidgetHostImpl::NotifyTextDirection() {
if (text_direction_updated_) {
if (!text_direction_canceled_)
Send(new ViewMsg_SetTextDirection(GetRoutingID(), text_direction_));
text_direction_updated_ = false;
text_direction_canceled_ = false;
}
}
void RenderWidgetHostImpl::ImeSetComposition(
const base::string16& text,
const std::vector<ui::ImeTextSpan>& ime_text_spans,
const gfx::Range& replacement_range,
int selection_start,
int selection_end) {
GetWidgetInputHandler()->ImeSetComposition(
text, ime_text_spans, replacement_range, selection_start, selection_end);
}
void RenderWidgetHostImpl::ImeCommitText(
const base::string16& text,
const std::vector<ui::ImeTextSpan>& ime_text_spans,
const gfx::Range& replacement_range,
int relative_cursor_pos) {
GetWidgetInputHandler()->ImeCommitText(text, ime_text_spans,
replacement_range, relative_cursor_pos,
base::OnceClosure());
}
void RenderWidgetHostImpl::ImeFinishComposingText(bool keep_selection) {
GetWidgetInputHandler()->ImeFinishComposingText(keep_selection);
}
void RenderWidgetHostImpl::ImeCancelComposition() {
GetWidgetInputHandler()->ImeSetComposition(base::string16(),
std::vector<ui::ImeTextSpan>(),
gfx::Range::InvalidRange(), 0, 0);
}
void RenderWidgetHostImpl::RejectMouseLockOrUnlockIfNecessary() {
DCHECK(!pending_mouse_lock_request_ || !IsMouseLocked());
if (pending_mouse_lock_request_) {
pending_mouse_lock_request_ = false;
Send(new ViewMsg_LockMouse_ACK(routing_id_, false));
} else if (IsMouseLocked()) {
view_->UnlockMouse();
}
}
bool RenderWidgetHostImpl::IsKeyboardLocked() const {
return view_ ? view_->IsKeyboardLocked() : false;
}
void RenderWidgetHostImpl::GetContentRenderingTimeoutFrom(
RenderWidgetHostImpl* other) {
if (other->new_content_rendering_timeout_ &&
other->new_content_rendering_timeout_->IsRunning()) {
new_content_rendering_timeout_->Start(
other->new_content_rendering_timeout_->GetCurrentDelay());
}
}
bool RenderWidgetHostImpl::IsMouseLocked() const {
return view_ ? view_->IsMouseLocked() : false;
}
void RenderWidgetHostImpl::SetAutoResize(bool enable,
const gfx::Size& min_size,
const gfx::Size& max_size) {
auto_resize_enabled_ = enable;
min_size_for_auto_resize_ = min_size;
max_size_for_auto_resize_ = max_size;
}
void RenderWidgetHostImpl::Destroy(bool also_delete) {
DCHECK(!destroyed_);
destroyed_ = true;
for (auto& observer : observers_)
observer.RenderWidgetHostDestroyed(this);
NotificationService::current()->Notify(
NOTIFICATION_RENDER_WIDGET_HOST_DESTROYED, Source<RenderWidgetHost>(this),
NotificationService::NoDetails());
// Tell the view to die.
// Note that in the process of the view shutting down, it can call a ton
// of other messages on us. So if you do any other deinitialization here,
// do it after this call to view_->Destroy().
if (view_) {
view_->Destroy();
view_.reset();
}
// The display compositor has ownership of shared memory for each
// SharedBitmapId that has been reported from the client. Since the client is
// gone that memory can be freed. If we don't then it would leak.
if (shared_bitmap_manager_) {
for (const auto& id : owned_bitmaps_)
shared_bitmap_manager_->ChildDeletedSharedBitmap(id);
} else {
// If the display compositor is not in the browser process, then the
// |bitmap_manager| is not present in the process either, and no bitmaps
// should have been registered with this class.
DCHECK(owned_bitmaps_.empty());
}
process_->RemoveWidget(this);
process_->RemoveRoute(routing_id_);
g_routing_id_widget_map.Get().erase(
RenderWidgetHostID(process_->GetID(), routing_id_));
if (delegate_)
delegate_->RenderWidgetDeleted(this);
if (also_delete) {
CHECK(!owner_delegate_);
delete this;
}
}
void RenderWidgetHostImpl::OnInputEventAckTimeout() {
RendererIsUnresponsive(base::BindRepeating(
&RenderWidgetHostImpl::RestartInputEventAckTimeoutIfNecessary,
weak_factory_.GetWeakPtr()));
}
void RenderWidgetHostImpl::RendererIsUnresponsive(
base::RepeatingClosure restart_hang_monitor_timeout) {
NotificationService::current()->Notify(
NOTIFICATION_RENDER_WIDGET_HOST_HANG,
Source<RenderWidgetHost>(this),
NotificationService::NoDetails());
is_unresponsive_ = true;
if (delegate_) {
delegate_->RendererUnresponsive(this,
std::move(restart_hang_monitor_timeout));
}
// Do not add code after this since the Delegate may delete this
// RenderWidgetHostImpl in RendererUnresponsive.
}
void RenderWidgetHostImpl::RendererIsResponsive() {
if (is_unresponsive_) {
is_unresponsive_ = false;
if (delegate_)
delegate_->RendererResponsive(this);
}
}
void RenderWidgetHostImpl::ClearDisplayedGraphics() {
NotifyNewContentRenderingTimeoutForTesting();
if (view_) {
if (enable_surface_synchronization_)
view_->ResetFallbackToFirstNavigationSurface();
else
view_->ClearCompositorFrame();
}
}
void RenderWidgetHostImpl::OnRenderProcessGone(int status, int exit_code) {
// RenderFrameHost owns a RenderWidgetHost when it needs one, in which case
// it handles destruction.
if (!owned_by_render_frame_host_) {
// TODO(evanm): This synchronously ends up calling "delete this".
// Is that really what we want in response to this message? I'm matching
// previous behavior of the code here.
Destroy(true);
} else {
RendererExited(static_cast<base::TerminationStatus>(status), exit_code);
}
}
void RenderWidgetHostImpl::OnHittestData(
const FrameHostMsg_HittestData_Params& params) {
if (delegate_)
delegate_->GetInputEventRouter()->OnHittestData(params);
}
void RenderWidgetHostImpl::OnClose() {
ShutdownAndDestroyWidget(true);
}
void RenderWidgetHostImpl::OnSetTooltipText(
const base::string16& tooltip_text,
WebTextDirection text_direction_hint) {
if (!GetView())
return;
// First, add directionality marks around tooltip text if necessary.
// A naive solution would be to simply always wrap the text. However, on
// windows, Unicode directional embedding characters can't be displayed on
// systems that lack RTL fonts and are instead displayed as empty squares.
//
// To get around this we only wrap the string when we deem it necessary i.e.
// when the locale direction is different than the tooltip direction hint.
//
// Currently, we use element's directionality as the tooltip direction hint.
// An alternate solution would be to set the overall directionality based on
// trying to detect the directionality from the tooltip text rather than the
// element direction. One could argue that would be a preferable solution
// but we use the current approach to match Fx & IE's behavior.
base::string16 wrapped_tooltip_text = tooltip_text;
if (!tooltip_text.empty()) {
if (text_direction_hint == blink::kWebTextDirectionLeftToRight) {
// Force the tooltip to have LTR directionality.
wrapped_tooltip_text =
base::i18n::GetDisplayStringInLTRDirectionality(wrapped_tooltip_text);
} else if (text_direction_hint == blink::kWebTextDirectionRightToLeft &&
!base::i18n::IsRTL()) {
// Force the tooltip to have RTL directionality.
base::i18n::WrapStringWithRTLFormatting(&wrapped_tooltip_text);
}
}
view_->SetTooltipText(wrapped_tooltip_text);
}
void RenderWidgetHostImpl::OnUpdateScreenRectsAck() {
waiting_for_screen_rects_ack_ = false;
if (!view_)
return;
if (view_->GetViewBounds() == last_view_screen_rect_ &&
view_->GetBoundsInRootWindow() == last_window_screen_rect_) {
return;
}
SendScreenRects();
}
void RenderWidgetHostImpl::OnRequestSetBounds(const gfx::Rect& bounds) {
if (view_) {
view_->SetBounds(bounds);
Send(new ViewMsg_SetBounds_ACK(routing_id_));
}
}
void RenderWidgetHostImpl::DidNotProduceFrame(const viz::BeginFrameAck& ack) {
// |has_damage| is not transmitted.
viz::BeginFrameAck modified_ack = ack;
modified_ack.has_damage = false;
if (view_)
view_->OnDidNotProduceFrame(modified_ack);
}
void RenderWidgetHostImpl::DidAllocateSharedBitmap(
mojo::ScopedSharedBufferHandle buffer,
const viz::SharedBitmapId& id) {
if (!shared_bitmap_manager_->ChildAllocatedSharedBitmap(std::move(buffer),
id)) {
bad_message::ReceivedBadMessage(GetProcess(),
bad_message::RWH_SHARED_BITMAP);
}
owned_bitmaps_.insert(id);
}
void RenderWidgetHostImpl::DidDeleteSharedBitmap(
const viz::SharedBitmapId& id) {
shared_bitmap_manager_->ChildDeletedSharedBitmap(id);
owned_bitmaps_.erase(id);
}
void RenderWidgetHostImpl::DidUpdateVisualProperties(
const cc::RenderFrameMetadata& metadata) {
TRACE_EVENT0("renderer_host",
"RenderWidgetHostImpl::DidUpdateVisualProperties");
// Update our knowledge of the RenderWidget's size.
DCHECK(!metadata.viewport_size_in_pixels.IsEmpty());
visual_properties_ack_pending_ = false;
NotificationService::current()->Notify(
NOTIFICATION_RENDER_WIDGET_HOST_DID_UPDATE_VISUAL_PROPERTIES,
Source<RenderWidgetHost>(this), NotificationService::NoDetails());
if (!view_ || is_hidden_)
return;
viz::ScopedSurfaceIdAllocator scoped_allocator =
view_->DidUpdateVisualProperties(metadata);
if (auto_resize_enabled_ && delegate_) {
// TODO(fsamuel): The fact that we translate the viewport_size from pixels
// to DIP is concerning. This could result in invariants violations.
gfx::Size viewport_size_in_dip = gfx::ScaleToCeiledSize(
metadata.viewport_size_in_pixels, 1.f / metadata.device_scale_factor);
delegate_->ResizeDueToAutoResize(this, viewport_size_in_dip);
}
}
void RenderWidgetHostImpl::OnSetCursor(const WebCursor& cursor) {
SetCursor(cursor);
}
void RenderWidgetHostImpl::OnAutoscrollStart(const gfx::PointF& position) {
GetView()->OnAutoscrollStart();
WebGestureEvent scroll_begin = SyntheticWebGestureEventBuilder::Build(
WebInputEvent::kGestureScrollBegin,
blink::kWebGestureDeviceSyntheticAutoscroll);
scroll_begin.SetPositionInWidget(position);
ForwardGestureEventWithLatencyInfo(
scroll_begin, ui::LatencyInfo(ui::SourceEventType::OTHER));
// Send a GFS event with zero velocity to make sure that the scroll sequence
// will end with the GFC generated in |OnAutoscrollEnd()|; Otherwise if the
// user cancels the autoscroll without moving the mouse, the GFC will get
// filtered since no GFS is sent in the sequence. https://crbug.com/829794
OnAutoscrollFling(gfx::Vector2dF());
}
void RenderWidgetHostImpl::OnAutoscrollFling(const gfx::Vector2dF& velocity) {
WebGestureEvent event = SyntheticWebGestureEventBuilder::Build(
WebInputEvent::kGestureFlingStart,
blink::kWebGestureDeviceSyntheticAutoscroll);
event.data.fling_start.velocity_x = velocity.x();
event.data.fling_start.velocity_y = velocity.y();
ForwardGestureEventWithLatencyInfo(
event, ui::LatencyInfo(ui::SourceEventType::OTHER));
}
void RenderWidgetHostImpl::OnAutoscrollEnd() {
WebGestureEvent cancel_event = SyntheticWebGestureEventBuilder::Build(
WebInputEvent::kGestureFlingCancel,
blink::kWebGestureDeviceSyntheticAutoscroll);
cancel_event.data.fling_cancel.prevent_boosting = true;
ForwardGestureEventWithLatencyInfo(
cancel_event, ui::LatencyInfo(ui::SourceEventType::OTHER));
}
TouchEmulator* RenderWidgetHostImpl::GetTouchEmulator() {
if (!delegate_ || !delegate_->GetInputEventRouter())
return nullptr;
return delegate_->GetInputEventRouter()->GetTouchEmulator();
}
TouchEmulator* RenderWidgetHostImpl::GetExistingTouchEmulator() {
if (!delegate_ || !delegate_->GetInputEventRouter() ||
!delegate_->GetInputEventRouter()->has_touch_emulator()) {
return nullptr;
}
return delegate_->GetInputEventRouter()->GetTouchEmulator();
}
void RenderWidgetHostImpl::OnTextInputStateChanged(
const TextInputState& params) {
if (view_)
view_->TextInputStateChanged(params);
}
void RenderWidgetHostImpl::OnImeCompositionRangeChanged(
const gfx::Range& range,
const std::vector<gfx::Rect>& character_bounds) {
if (view_)
view_->ImeCompositionRangeChanged(range, character_bounds);
}
void RenderWidgetHostImpl::OnImeCancelComposition() {
if (view_)
view_->ImeCancelComposition();
}
bool RenderWidgetHostImpl::IsWheelScrollInProgress() {
return is_in_gesture_scroll_[blink::kWebGestureDeviceTouchpad];
}
void RenderWidgetHostImpl::SetMouseCapture(bool capture) {
if (delegate_)
delegate_->GetInputEventRouter()->SetMouseCaptureTarget(GetView(), capture);
}
void RenderWidgetHostImpl::OnInvalidFrameToken(uint32_t frame_token) {
bad_message::ReceivedBadMessage(GetProcess(),
bad_message::RWH_INVALID_FRAME_TOKEN);
}
void RenderWidgetHostImpl::OnMessageDispatchError(const IPC::Message& message) {
RenderProcessHost* rph = GetProcess();
rph->OnBadMessageReceived(message);
}
void RenderWidgetHostImpl::OnProcessSwapMessage(const IPC::Message& message) {
RenderProcessHost* rph = GetProcess();
rph->OnMessageReceived(message);
}
void RenderWidgetHostImpl::OnLockMouse(bool user_gesture,
bool privileged) {
if (pending_mouse_lock_request_) {
Send(new ViewMsg_LockMouse_ACK(routing_id_, false));
return;
}
pending_mouse_lock_request_ = true;
if (delegate_) {
delegate_->RequestToLockMouse(this, user_gesture,
is_last_unlocked_by_target_,
privileged && allow_privileged_mouse_lock_);
// We need to reset |is_last_unlocked_by_target_| here as we don't know
// request source in |LostMouseLock()|.
is_last_unlocked_by_target_ = false;
return;
}
if (privileged && allow_privileged_mouse_lock_) {
// Directly approve to lock the mouse.
GotResponseToLockMouseRequest(true);
} else {
// Otherwise, just reject it.
GotResponseToLockMouseRequest(false);
}
}
void RenderWidgetHostImpl::OnUnlockMouse() {
// Got unlock request from renderer. Will update |is_last_unlocked_by_target_|
// for silent re-lock.
const bool was_mouse_locked = !pending_mouse_lock_request_ && IsMouseLocked();
RejectMouseLockOrUnlockIfNecessary();
if (was_mouse_locked)
is_last_unlocked_by_target_ = true;
}
bool RenderWidgetHostImpl::RequestKeyboardLock(
base::Optional<base::flat_set<ui::DomCode>> codes) {
if (!delegate_) {
CancelKeyboardLock();
return false;
}
DCHECK(!codes.has_value() || !codes.value().empty());
keyboard_keys_to_lock_ = std::move(codes);
keyboard_lock_requested_ = true;
const bool esc_requested =
!keyboard_keys_to_lock_.has_value() ||
base::ContainsKey(keyboard_keys_to_lock_.value(), ui::DomCode::ESCAPE);
if (!delegate_->RequestKeyboardLock(this, esc_requested)) {
CancelKeyboardLock();
return false;
}
return true;
}
void RenderWidgetHostImpl::CancelKeyboardLock() {
if (delegate_)
delegate_->CancelKeyboardLock(this);
UnlockKeyboard();
keyboard_lock_allowed_ = false;
keyboard_lock_requested_ = false;
keyboard_keys_to_lock_.reset();
}
base::flat_map<std::string, std::string>
RenderWidgetHostImpl::GetKeyboardLayoutMap() {
if (!view_)
return {};
return view_->GetKeyboardLayoutMap();
}
void RenderWidgetHostImpl::SetIgnoreInputEvents(bool ignore_input_events) {
ignore_input_events_ = ignore_input_events;
}
bool RenderWidgetHostImpl::KeyPressListenersHandleEvent(
const NativeWebKeyboardEvent& event) {
if (event.skip_in_browser || event.GetType() != WebKeyboardEvent::kRawKeyDown)
return false;
for (size_t i = 0; i < key_press_event_callbacks_.size(); i++) {
size_t original_size = key_press_event_callbacks_.size();
if (key_press_event_callbacks_[i].Run(event))
return true;
// Check whether the callback that just ran removed itself, in which case
// the iterator needs to be decremented to properly account for the removal.
size_t current_size = key_press_event_callbacks_.size();
if (current_size != original_size) {
DCHECK_EQ(original_size - 1, current_size);
--i;
}
}
return false;
}
InputEventAckState RenderWidgetHostImpl::FilterInputEvent(
const blink::WebInputEvent& event, const ui::LatencyInfo& latency_info) {
// Don't ignore touch cancel events, since they may be sent while input
// events are being ignored in order to keep the renderer from getting
// confused about how many touches are active.
if (ShouldDropInputEvents() && event.GetType() != WebInputEvent::kTouchCancel)
return INPUT_EVENT_ACK_STATE_NO_CONSUMER_EXISTS;
if (!process_->IsInitializedAndNotDead())
return INPUT_EVENT_ACK_STATE_UNKNOWN;
if (delegate_) {
if (event.GetType() == WebInputEvent::kMouseDown ||
event.GetType() == WebInputEvent::kTouchStart ||
event.GetType() == WebInputEvent::kGestureTap) {
delegate_->FocusOwningWebContents(this);
}
delegate_->DidReceiveInputEvent(this, event.GetType());
}
return view_ ? view_->FilterInputEvent(event)
: INPUT_EVENT_ACK_STATE_NOT_CONSUMED;
}
void RenderWidgetHostImpl::IncrementInFlightEventCount() {
++in_flight_event_count_;
if (!is_hidden_)
StartInputEventAckTimeout(hung_renderer_delay_);
}
void RenderWidgetHostImpl::DecrementInFlightEventCount(
InputEventAckSource ack_source) {
--in_flight_event_count_;
if (in_flight_event_count_ <= 0) {
// Cancel pending hung renderer checks since the renderer is responsive.
StopInputEventAckTimeout();
} else {
// Only restart the hang monitor timer if we got a response from the
// main thread.
if (ack_source == InputEventAckSource::MAIN_THREAD)
RestartInputEventAckTimeoutIfNecessary();
}
}
void RenderWidgetHostImpl::OnHasTouchEventHandlers(bool has_handlers) {
has_touch_handler_ = has_handlers;
}
void RenderWidgetHostImpl::DidOverscroll(
const ui::DidOverscrollParams& params) {
if (view_)
view_->DidOverscroll(params);
}
void RenderWidgetHostImpl::DidStopFlinging() {
is_in_touchpad_gesture_fling_ = false;
if (view_)
view_->DidStopFlinging();
}
void RenderWidgetHostImpl::DidStartScrollingViewport() {
if (view_)
view_->set_is_currently_scrolling_viewport(true);
}
void RenderWidgetHostImpl::SetNeedsBeginFrameForFlingProgress() {
browser_fling_needs_begin_frame_ = true;
SetNeedsBeginFrame(true);
}
void RenderWidgetHostImpl::DispatchInputEventWithLatencyInfo(
const blink::WebInputEvent& event,
ui::LatencyInfo* latency) {
latency_tracker_.OnInputEvent(event, latency);
for (auto& observer : input_event_observers_)
observer.OnInputEvent(event);
}
void RenderWidgetHostImpl::OnKeyboardEventAck(
const NativeWebKeyboardEventWithLatencyInfo& event,
InputEventAckSource ack_source,
InputEventAckState ack_result) {
latency_tracker_.OnInputEventAck(event.event, &event.latency, ack_result);
for (auto& input_event_observer : input_event_observers_)
input_event_observer.OnInputEventAck(ack_source, ack_result, event.event);
const bool processed = (INPUT_EVENT_ACK_STATE_CONSUMED == ack_result);
// We only send unprocessed key event upwards if we are not hidden,
// because the user has moved away from us and no longer expect any effect
// of this key event.
if (delegate_ && !processed && !is_hidden() && !event.event.skip_in_browser) {
delegate_->HandleKeyboardEvent(event.event);
// WARNING: This RenderWidgetHostImpl can be deallocated at this point
// (i.e. in the case of Ctrl+W, where the call to
// HandleKeyboardEvent destroys this RenderWidgetHostImpl).
}
}
void RenderWidgetHostImpl::OnMouseEventAck(
const MouseEventWithLatencyInfo& mouse_event,
InputEventAckSource ack_source,
InputEventAckState ack_result) {
latency_tracker_.OnInputEventAck(mouse_event.event, &mouse_event.latency,
ack_result);
for (auto& input_event_observer : input_event_observers_)
input_event_observer.OnInputEventAck(ack_source, ack_result,
mouse_event.event);
}
void RenderWidgetHostImpl::OnWheelEventAck(
const MouseWheelEventWithLatencyInfo& wheel_event,
InputEventAckSource ack_source,
InputEventAckState ack_result) {
latency_tracker_.OnInputEventAck(wheel_event.event, &wheel_event.latency,
ack_result);
for (auto& input_event_observer : input_event_observers_)
input_event_observer.OnInputEventAck(ack_source, ack_result,
wheel_event.event);
if (!is_hidden() && view_) {
if (ack_result != INPUT_EVENT_ACK_STATE_CONSUMED &&
delegate_ && delegate_->HandleWheelEvent(wheel_event.event)) {
ack_result = INPUT_EVENT_ACK_STATE_CONSUMED;
}
view_->WheelEventAck(wheel_event.event, ack_result);
}
}
void RenderWidgetHostImpl::OnGestureEventAck(
const GestureEventWithLatencyInfo& event,
InputEventAckSource ack_source,
InputEventAckState ack_result) {
latency_tracker_.OnInputEventAck(event.event, &event.latency, ack_result);
for (auto& input_event_observer : input_event_observers_)
input_event_observer.OnInputEventAck(ack_source, ack_result, event.event);
// If the TouchEmulator didn't exist when this GestureEvent was sent, we
// shouldn't create it here.
if (auto* touch_emulator = GetExistingTouchEmulator())
touch_emulator->OnGestureEventAck(event.event, GetView());
if (view_)
view_->GestureEventAck(event.event, ack_result);
}
void RenderWidgetHostImpl::OnTouchEventAck(
const TouchEventWithLatencyInfo& event,
InputEventAckSource ack_source,
InputEventAckState ack_result) {
latency_tracker_.OnInputEventAck(event.event, &event.latency, ack_result);
for (auto& input_event_observer : input_event_observers_)
input_event_observer.OnInputEventAck(ack_source, ack_result, event.event);
auto* input_event_router =
delegate() ? delegate()->GetInputEventRouter() : nullptr;
// At present interstitial pages might not have an input event router, so we
// just have the view process the ack directly in that case; the view is
// guaranteed to be a top-level view with an appropriate implementation of
// ProcessAckedTouchEvent().
if (input_event_router)
input_event_router->ProcessAckedTouchEvent(event, ack_result, view_.get());
else if (view_)
view_->ProcessAckedTouchEvent(event, ack_result);
}
void RenderWidgetHostImpl::OnUnexpectedEventAck(UnexpectedEventAckType type) {
if (type == BAD_ACK_MESSAGE) {
bad_message::ReceivedBadMessage(process_, bad_message::RWH_BAD_ACK_MESSAGE);
} else if (type == UNEXPECTED_EVENT_TYPE) {
suppress_events_until_keydown_ = false;
}
}
bool RenderWidgetHostImpl::ShouldDropInputEvents() const {
return ignore_input_events_ || process_->IgnoreInputEvents() || !delegate_;
}
void RenderWidgetHostImpl::SetBackgroundOpaque(bool opaque) {
Send(new ViewMsg_SetBackgroundOpaque(GetRoutingID(), opaque));
}
bool RenderWidgetHostImpl::GotResponseToLockMouseRequest(bool allowed) {
if (!allowed) {
RejectMouseLockOrUnlockIfNecessary();
return false;
}
if (!pending_mouse_lock_request_) {
// This is possible, e.g., the plugin sends us an unlock request before
// the user allows to lock to mouse.
return false;
}
pending_mouse_lock_request_ = false;
if (!view_ || !view_->HasFocus()|| !view_->LockMouse()) {
Send(new ViewMsg_LockMouse_ACK(routing_id_, false));
return false;
}
Send(new ViewMsg_LockMouse_ACK(routing_id_, true));
return true;
}
void RenderWidgetHostImpl::GotResponseToKeyboardLockRequest(bool allowed) {
DCHECK(keyboard_lock_requested_);
keyboard_lock_allowed_ = allowed;
if (keyboard_lock_allowed_)
LockKeyboard();
else
UnlockKeyboard();
}
void RenderWidgetHostImpl::DetachDelegate() {
delegate_ = nullptr;
latency_tracker_.reset_delegate();
}
void RenderWidgetHostImpl::DidReceiveRendererFrame() {
view_->DidReceiveRendererFrame();
}
void RenderWidgetHostImpl::WindowSnapshotReachedScreen(int snapshot_id) {
DCHECK(base::MessageLoopForUI::IsCurrent());
if (!pending_surface_browser_snapshots_.empty()) {
GetView()->CopyFromSurface(
gfx::Rect(), gfx::Size(),
base::BindOnce(&RenderWidgetHostImpl::OnSnapshotFromSurfaceReceived,
weak_factory_.GetWeakPtr(), snapshot_id, 0));
}
if (!pending_browser_snapshots_.empty()) {
#if defined(OS_ANDROID)
// On Android, call sites should pass in the bounds with correct offset
// to capture the intended content area.
gfx::Rect snapshot_bounds(GetView()->GetViewBounds());
snapshot_bounds.Offset(0, GetView()->GetNativeView()->content_offset());
#else
gfx::Rect snapshot_bounds(GetView()->GetViewBounds().size());
#endif
gfx::Image image;
if (ui::GrabViewSnapshot(GetView()->GetNativeView(), snapshot_bounds,
&image)) {
OnSnapshotReceived(snapshot_id, image);
return;
}
ui::GrabViewSnapshotAsync(
GetView()->GetNativeView(), snapshot_bounds,
base::Bind(&RenderWidgetHostImpl::OnSnapshotReceived,
weak_factory_.GetWeakPtr(), snapshot_id));
}
}
void RenderWidgetHostImpl::OnSnapshotFromSurfaceReceived(
int snapshot_id,
int retry_count,
const SkBitmap& bitmap) {
static constexpr int kMaxRetries = 5;
if (bitmap.drawsNothing() && retry_count < kMaxRetries) {
GetView()->CopyFromSurface(
gfx::Rect(), gfx::Size(),
base::BindOnce(&RenderWidgetHostImpl::OnSnapshotFromSurfaceReceived,
weak_factory_.GetWeakPtr(), snapshot_id,
retry_count + 1));
return;
}
// If all retries have failed, we return an empty image.
gfx::Image image;
if (!bitmap.drawsNothing())
image = gfx::Image::CreateFrom1xBitmap(bitmap);
// Any pending snapshots with a lower ID than the one received are considered
// to be implicitly complete, and returned the same snapshot data.
PendingSnapshotMap::iterator it = pending_surface_browser_snapshots_.begin();
while (it != pending_surface_browser_snapshots_.end()) {
if (it->first <= snapshot_id) {
it->second.Run(image);
pending_surface_browser_snapshots_.erase(it++);
} else {
++it;
}
}
}
void RenderWidgetHostImpl::OnSnapshotReceived(int snapshot_id,
gfx::Image image) {
// Any pending snapshots with a lower ID than the one received are considered
// to be implicitly complete, and returned the same snapshot data.
PendingSnapshotMap::iterator it = pending_browser_snapshots_.begin();
while (it != pending_browser_snapshots_.end()) {
if (it->first <= snapshot_id) {
it->second.Run(image);
pending_browser_snapshots_.erase(it++);
} else {
++it;
}
}
#if defined(OS_MACOSX)
if (pending_browser_snapshots_.empty())
GetWakeLock()->CancelWakeLock();
#endif
}
BrowserAccessibilityManager*
RenderWidgetHostImpl::GetRootBrowserAccessibilityManager() {
return delegate_ ? delegate_->GetRootBrowserAccessibilityManager() : nullptr;
}
BrowserAccessibilityManager*
RenderWidgetHostImpl::GetOrCreateRootBrowserAccessibilityManager() {
return delegate_ ? delegate_->GetOrCreateRootBrowserAccessibilityManager()
: nullptr;
}
void RenderWidgetHostImpl::GrantFileAccessFromDropData(DropData* drop_data) {
DCHECK_EQ(GetRoutingID(), drop_data->view_id);
RenderProcessHost* process = GetProcess();
PrepareDropDataForChildProcess(
drop_data, ChildProcessSecurityPolicyImpl::GetInstance(),
process->GetID(), process->GetStoragePartition()->GetFileSystemContext());
}
void RenderWidgetHostImpl::RequestCompositionUpdates(bool immediate_request,
bool monitor_updates) {
if (!immediate_request && monitor_updates == monitoring_composition_info_)
return;
monitoring_composition_info_ = monitor_updates;
GetWidgetInputHandler()->RequestCompositionUpdates(immediate_request,
monitor_updates);
}
void RenderWidgetHostImpl::RequestCompositorFrameSink(
viz::mojom::CompositorFrameSinkRequest compositor_frame_sink_request,
viz::mojom::CompositorFrameSinkClientPtr compositor_frame_sink_client) {
if (enable_viz_) {
// Connects the viz process end of CompositorFrameSink message pipes. The
// renderer compositor may request a new CompositorFrameSink on context
// loss, which will destroy the existing CompositorFrameSink.
auto callback = base::BindOnce(
[](viz::HostFrameSinkManager* manager,
viz::mojom::CompositorFrameSinkRequest request,
viz::mojom::CompositorFrameSinkClientPtr client,
const viz::FrameSinkId& frame_sink_id) {
manager->CreateCompositorFrameSink(
frame_sink_id, std::move(request), std::move(client));
},
base::Unretained(GetHostFrameSinkManager()),
std::move(compositor_frame_sink_request),
std::move(compositor_frame_sink_client));
if (view_)
std::move(callback).Run(view_->GetFrameSinkId());
else
create_frame_sink_callback_ = std::move(callback);
return;
}
// Consider any bitmaps registered with the old CompositorFrameSink as gone,
// they will be re-registered on the newly requested CompositorFrameSink if
// they are meant to be used still. https://crbug.com/862584.
for (const auto& id : owned_bitmaps_)
shared_bitmap_manager_->ChildDeletedSharedBitmap(id);
owned_bitmaps_.clear();
if (compositor_frame_sink_binding_.is_bound())
compositor_frame_sink_binding_.Close();
compositor_frame_sink_binding_.Bind(
std::move(compositor_frame_sink_request),
BrowserMainLoop::GetInstance()->GetResizeTaskRunner());
if (view_) {
view_->DidCreateNewRendererCompositorFrameSink(
compositor_frame_sink_client.get());
}
renderer_compositor_frame_sink_ = std::move(compositor_frame_sink_client);
}
void RenderWidgetHostImpl::RegisterRenderFrameMetadataObserver(
mojom::RenderFrameMetadataObserverClientRequest
render_frame_metadata_observer_client_request,
mojom::RenderFrameMetadataObserverPtr render_frame_metadata_observer) {
render_frame_metadata_provider_.Bind(
std::move(render_frame_metadata_observer_client_request),
std::move(render_frame_metadata_observer));
}
bool RenderWidgetHostImpl::HasGestureStopped() {
return !input_router_->HasPendingEvents();
}
void RenderWidgetHostImpl::SetNeedsBeginFrame(bool needs_begin_frames) {
if (needs_begin_frames_ == needs_begin_frames)
return;
needs_begin_frames_ = needs_begin_frames || browser_fling_needs_begin_frame_;
if (view_)
view_->SetNeedsBeginFrames(needs_begin_frames_);
}
void RenderWidgetHostImpl::SetWantsAnimateOnlyBeginFrames() {
if (view_)
view_->SetWantsAnimateOnlyBeginFrames();
}
void RenderWidgetHostImpl::SubmitCompositorFrameSync(
const viz::LocalSurfaceId& local_surface_id,
viz::CompositorFrame frame,
base::Optional<viz::HitTestRegionList> hit_test_region_list,
uint64_t submit_time,
const SubmitCompositorFrameSyncCallback callback) {
NOTIMPLEMENTED();
}
void RenderWidgetHostImpl::SubmitCompositorFrame(
const viz::LocalSurfaceId& local_surface_id,
viz::CompositorFrame frame,
base::Optional<viz::HitTestRegionList> hit_test_region_list,
uint64_t submit_time) {
// Ensure there are no CopyOutputRequests stowed-away in the CompositorFrame.
// For security/privacy reasons, renderers are not allowed to make copy
// requests because they could use this to gain access to content from another
// domain (e.g., in a child frame).
if (frame.HasCopyOutputRequests()) {
bad_message::ReceivedBadMessage(GetProcess(),
bad_message::RWH_COPY_REQUEST_ATTEMPT);
return;
}
auto new_surface_properties =
RenderWidgetSurfaceProperties::FromCompositorFrame(frame);
if (local_surface_id == last_local_surface_id_ &&
new_surface_properties != last_surface_properties_) {
std::string error = base::StringPrintf(
"[OOPIF? %d] %s\n", view_ && view_->IsRenderWidgetHostViewChildFrame(),
new_surface_properties.ToDiffString(last_surface_properties_).c_str());
LOG(ERROR) << "Surface invariants violation: " << error;
static int invariants_violation_count = 0;
++invariants_violation_count;
UMA_HISTOGRAM_COUNTS_1000("Compositing.SurfaceInvariantsViolations",
invariants_violation_count);
if (features::IsSurfaceInvariantsViolationLoggingEnabled()) {
static auto* crash_key = base::debug::AllocateCrashKeyString(
"surface-invariants-violation", base::debug::CrashKeySize::Size256);
base::debug::ScopedCrashKeyString key_value(crash_key, error);
base::debug::DumpWithoutCrashing();
}
if (view_) {
frame.metadata.begin_frame_ack.has_damage = false;
view_->OnDidNotProduceFrame(frame.metadata.begin_frame_ack);
}
std::vector<viz::ReturnedResource> resources =
viz::TransferableResource::ReturnResources(frame.resource_list);
renderer_compositor_frame_sink_->DidReceiveCompositorFrameAck(resources);
return;
}
last_local_surface_id_ = local_surface_id;
last_surface_properties_ = new_surface_properties;
last_received_content_source_id_ = frame.metadata.content_source_id;
// |has_damage| is not transmitted.
frame.metadata.begin_frame_ack.has_damage = true;
last_frame_metadata_ = frame.metadata.Clone();
if (enable_surface_synchronization_) {
if (view_) {
// If Surface Synchronization is on, then |new_content_rendering_timeout_|
// is stopped in DidReceiveFirstFrameAfterNavigation.
view_->SubmitCompositorFrame(local_surface_id, std::move(frame),
std::move(hit_test_region_list));
view_->DidReceiveRendererFrame();
} else {
std::vector<viz::ReturnedResource> resources =
viz::TransferableResource::ReturnResources(frame.resource_list);
renderer_compositor_frame_sink_->DidReceiveCompositorFrameAck(resources);
}
} else {
// Ignore this frame if its content has already been unloaded. Source ID
// is always zero for an OOPIF because we are only concerned with displaying
// stale graphics on top-level frames. We accept frames that have a source
// ID greater than |current_content_source_id_| because in some cases the
// first compositor frame can arrive before the navigation commit message
// that updates that value.
if (view_ &&
frame.metadata.content_source_id >= current_content_source_id_) {
view_->SubmitCompositorFrame(local_surface_id, std::move(frame),
std::move(hit_test_region_list));
view_->DidReceiveRendererFrame();
} else {
if (view_) {
frame.metadata.begin_frame_ack.has_damage = false;
view_->OnDidNotProduceFrame(frame.metadata.begin_frame_ack);
}
std::vector<viz::ReturnedResource> resources =
viz::TransferableResource::ReturnResources(frame.resource_list);
renderer_compositor_frame_sink_->DidReceiveCompositorFrameAck(resources);
}
// After navigation, if a frame belonging to the new page is received, stop
// the timer that triggers clearing the graphics of the last page.
if (last_received_content_source_id_ >= current_content_source_id_) {
did_receive_first_frame_after_navigation_ = true;
if (new_content_rendering_timeout_ &&
new_content_rendering_timeout_->IsRunning()) {
new_content_rendering_timeout_->Stop();
}
}
}
}
void RenderWidgetHostImpl::DidProcessFrame(uint32_t frame_token) {
frame_token_message_queue_->DidProcessFrame(frame_token);
}
#if defined(OS_MACOSX)
device::mojom::WakeLock* RenderWidgetHostImpl::GetWakeLock() {
// Here is a lazy binding, and will not reconnect after connection error.
if (!wake_lock_) {
device::mojom::WakeLockRequest request = mojo::MakeRequest(&wake_lock_);
// In some testing contexts, the service manager connection isn't
// initialized.
if (ServiceManagerConnection::GetForProcess()) {
service_manager::Connector* connector =
ServiceManagerConnection::GetForProcess()->GetConnector();
DCHECK(connector);
device::mojom::WakeLockProviderPtr wake_lock_provider;
connector->BindInterface(device::mojom::kServiceName,
mojo::MakeRequest(&wake_lock_provider));
wake_lock_provider->GetWakeLockWithoutContext(
device::mojom::WakeLockType::kPreventDisplaySleep,
device::mojom::WakeLockReason::kOther, "GetSnapshot",
std::move(request));
}
}
return wake_lock_.get();
}
#endif
void RenderWidgetHostImpl::SetupInputRouter() {
in_flight_event_count_ = 0;
StopInputEventAckTimeout();
associated_widget_input_handler_ = nullptr;
widget_input_handler_ = nullptr;
input_router_.reset(new InputRouterImpl(this, this, fling_scheduler_.get(),
GetInputRouterConfigForPlatform()));
// input_router_ recreated, need to update the force_enable_zoom_ state.
input_router_->SetForceEnableZoom(force_enable_zoom_);
if (IsUseZoomForDSFEnabled()) {
input_router_->SetDeviceScaleFactor(GetScaleFactorForView(view_.get()));
}
}
void RenderWidgetHostImpl::SetForceEnableZoom(bool enabled) {
force_enable_zoom_ = enabled;
input_router_->SetForceEnableZoom(enabled);
}
void RenderWidgetHostImpl::SetWidgetInputHandler(
mojom::WidgetInputHandlerAssociatedPtr widget_input_handler,
mojom::WidgetInputHandlerHostRequest host_request) {
associated_widget_input_handler_ = std::move(widget_input_handler);
input_router_->BindHost(std::move(host_request), true);
}
void RenderWidgetHostImpl::SetInputTargetClient(
viz::mojom::InputTargetClientPtr input_target_client) {
input_target_client_ = std::move(input_target_client);
}
void RenderWidgetHostImpl::SetWidget(mojom::WidgetPtr widget) {
if (widget) {
// If we have a bound handler ensure that we destroy the old input router.
if (widget_input_handler_.get())
SetupInputRouter();
mojom::WidgetInputHandlerHostPtr host;
mojom::WidgetInputHandlerHostRequest host_request =
mojo::MakeRequest(&host);
widget->SetupWidgetInputHandler(mojo::MakeRequest(&widget_input_handler_),
std::move(host));
input_router_->BindHost(std::move(host_request), false);
}
}
void RenderWidgetHostImpl::ProgressFlingIfNeeded(TimeTicks current_time) {
browser_fling_needs_begin_frame_ = false;
fling_scheduler_->ProgressFlingOnBeginFrameIfneeded(current_time);
}
void RenderWidgetHostImpl::ForceFirstFrameAfterNavigationTimeout() {
if (did_receive_first_frame_after_navigation_ ||
!new_content_rendering_timeout_) {
return;
}
new_content_rendering_timeout_->Stop();
ClearDisplayedGraphics();
}
void RenderWidgetHostImpl::StopFling() {
if (input_router_)
input_router_->StopFling();
}
bool RenderWidgetHostImpl::FlingCancellationIsDeferred() const {
if (input_router_)
return input_router_->FlingCancellationIsDeferred();
return false;
}
void RenderWidgetHostImpl::SetScreenOrientationForTesting(
uint16_t angle,
ScreenOrientationValues type) {
screen_orientation_angle_for_testing_ = angle;
screen_orientation_type_for_testing_ = type;
SynchronizeVisualProperties();
}
bool RenderWidgetHostImpl::LockKeyboard() {
if (!keyboard_lock_allowed_ || !is_focused_ || !view_)
return false;
// KeyboardLock can be activated and deactivated several times per request,
// for example when a fullscreen tab loses and gains focus multiple times,
// so we need to retain a copy of the keys requested.
base::Optional<base::flat_set<ui::DomCode>> copy = keyboard_keys_to_lock_;
return view_->LockKeyboard(std::move(copy));
}
void RenderWidgetHostImpl::UnlockKeyboard() {
if (IsKeyboardLocked())
view_->UnlockKeyboard();
}
void RenderWidgetHostImpl::OnRenderFrameMetadataChangedBeforeActivation(
const cc::RenderFrameMetadata& metadata) {}
void RenderWidgetHostImpl::OnRenderFrameMetadataChangedAfterActivation() {
bool is_mobile_optimized =
render_frame_metadata_provider_.LastRenderFrameMetadata()
.is_mobile_optimized;
input_router_->NotifySiteIsMobileOptimized(is_mobile_optimized);
if (auto* touch_emulator = GetExistingTouchEmulator())
touch_emulator->SetDoubleTapSupportForPageEnabled(!is_mobile_optimized);
}
void RenderWidgetHostImpl::OnLocalSurfaceIdChanged(
const cc::RenderFrameMetadata& metadata) {
DidUpdateVisualProperties(metadata);
}
} // namespace content