| /* |
| * Copyright (C) 2006, 2007, 2008, 2011 Apple Inc. All rights reserved. |
| * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies) |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "core/editing/Editor.h" |
| |
| #include "bindings/core/v8/ExceptionStatePlaceholder.h" |
| #include "core/CSSPropertyNames.h" |
| #include "core/EventNames.h" |
| #include "core/HTMLNames.h" |
| #include "core/clipboard/DataObject.h" |
| #include "core/clipboard/DataTransfer.h" |
| #include "core/clipboard/Pasteboard.h" |
| #include "core/css/CSSComputedStyleDeclaration.h" |
| #include "core/css/StylePropertySet.h" |
| #include "core/dom/AXObjectCache.h" |
| #include "core/dom/DocumentFragment.h" |
| #include "core/dom/ElementTraversal.h" |
| #include "core/dom/NodeTraversal.h" |
| #include "core/dom/ParserContentPolicy.h" |
| #include "core/dom/Text.h" |
| #include "core/editing/EditingUtilities.h" |
| #include "core/editing/InputMethodController.h" |
| #include "core/editing/RenderedPosition.h" |
| #include "core/editing/VisibleUnits.h" |
| #include "core/editing/commands/ApplyStyleCommand.h" |
| #include "core/editing/commands/DeleteSelectionCommand.h" |
| #include "core/editing/commands/IndentOutdentCommand.h" |
| #include "core/editing/commands/InsertListCommand.h" |
| #include "core/editing/commands/MoveSelectionCommand.h" |
| #include "core/editing/commands/RemoveFormatCommand.h" |
| #include "core/editing/commands/ReplaceSelectionCommand.h" |
| #include "core/editing/commands/SimplifyMarkupCommand.h" |
| #include "core/editing/commands/TypingCommand.h" |
| #include "core/editing/commands/UndoStack.h" |
| #include "core/editing/iterators/SearchBuffer.h" |
| #include "core/editing/markers/DocumentMarkerController.h" |
| #include "core/editing/serializers/Serialization.h" |
| #include "core/editing/spellcheck/SpellChecker.h" |
| #include "core/events/ClipboardEvent.h" |
| #include "core/events/KeyboardEvent.h" |
| #include "core/events/ScopedEventQueue.h" |
| #include "core/events/TextEvent.h" |
| #include "core/fetch/ImageResource.h" |
| #include "core/fetch/ResourceFetcher.h" |
| #include "core/frame/FrameView.h" |
| #include "core/frame/LocalFrame.h" |
| #include "core/frame/Settings.h" |
| #include "core/frame/UseCounter.h" |
| #include "core/html/HTMLBodyElement.h" |
| #include "core/html/HTMLCanvasElement.h" |
| #include "core/html/HTMLHtmlElement.h" |
| #include "core/html/HTMLImageElement.h" |
| #include "core/html/HTMLInputElement.h" |
| #include "core/html/HTMLTextAreaElement.h" |
| #include "core/html/parser/HTMLParserIdioms.h" |
| #include "core/input/EventHandler.h" |
| #include "core/inspector/ConsoleMessage.h" |
| #include "core/layout/HitTestResult.h" |
| #include "core/layout/LayoutImage.h" |
| #include "core/loader/EmptyClients.h" |
| #include "core/page/DragData.h" |
| #include "core/page/EditorClient.h" |
| #include "core/page/FocusController.h" |
| #include "core/page/Page.h" |
| #include "core/svg/SVGImageElement.h" |
| #include "platform/KillRing.h" |
| #include "platform/weborigin/KURL.h" |
| #include "wtf/PtrUtil.h" |
| #include "wtf/text/CharacterNames.h" |
| |
| namespace blink { |
| |
| using namespace HTMLNames; |
| using namespace WTF; |
| using namespace Unicode; |
| |
| namespace { |
| |
| void dispatchInputEvent(Element* target, |
| InputEvent::InputType inputType, |
| const String& data, |
| InputEvent::EventIsComposing isComposing) { |
| if (!RuntimeEnabledFeatures::inputEventEnabled()) |
| return; |
| if (!target) |
| return; |
| // TODO(chongz): Pass appreciate |ranges| after it's defined on spec. |
| // http://w3c.github.io/editing/input-events.html#dom-inputevent-inputtype |
| InputEvent* inputEvent = |
| InputEvent::createInput(inputType, data, isComposing, nullptr); |
| target->dispatchScopedEvent(inputEvent); |
| } |
| |
| void dispatchInputEventEditableContentChanged( |
| Element* startRoot, |
| Element* endRoot, |
| InputEvent::InputType inputType, |
| const String& data, |
| InputEvent::EventIsComposing isComposing) { |
| if (startRoot) |
| dispatchInputEvent(startRoot, inputType, data, isComposing); |
| if (endRoot && endRoot != startRoot) |
| dispatchInputEvent(endRoot, inputType, data, isComposing); |
| } |
| |
| InputEvent::EventIsComposing isComposingFromCommand( |
| const CompositeEditCommand* command) { |
| if (command->isTypingCommand() && |
| toTypingCommand(command)->compositionType() != |
| TypingCommand::TextCompositionNone) |
| return InputEvent::EventIsComposing::IsComposing; |
| return InputEvent::EventIsComposing::NotComposing; |
| } |
| |
| } // anonymous namespace |
| |
| Editor::RevealSelectionScope::RevealSelectionScope(Editor* editor) |
| : m_editor(editor) { |
| ++m_editor->m_preventRevealSelection; |
| } |
| |
| Editor::RevealSelectionScope::~RevealSelectionScope() { |
| DCHECK(m_editor->m_preventRevealSelection); |
| --m_editor->m_preventRevealSelection; |
| if (!m_editor->m_preventRevealSelection) { |
| // TODO(xiaochengh): The use of updateStyleAndLayoutIgnorePendingStylesheets |
| // needs to be audited. See http://crbug.com/590369 for more details. |
| m_editor->frame() |
| .document() |
| ->updateStyleAndLayoutIgnorePendingStylesheets(); |
| |
| m_editor->frame().selection().revealSelection( |
| ScrollAlignment::alignToEdgeIfNeeded, RevealExtent); |
| } |
| } |
| |
| // When an event handler has moved the selection outside of a text control |
| // we should use the target control's selection for this editing operation. |
| VisibleSelection Editor::selectionForCommand(Event* event) { |
| frame().selection().updateIfNeeded(); |
| VisibleSelection selection = frame().selection().selection(); |
| if (!event) |
| return selection; |
| // If the target is a text control, and the current selection is outside of |
| // its shadow tree, then use the saved selection for that text control. |
| HTMLTextFormControlElement* textFormControlOfSelectionStart = |
| enclosingTextFormControl(selection.start()); |
| HTMLTextFormControlElement* textFromControlOfTarget = |
| isHTMLTextFormControlElement(*event->target()->toNode()) |
| ? toHTMLTextFormControlElement(event->target()->toNode()) |
| : 0; |
| if (textFromControlOfTarget && |
| (selection.start().isNull() || |
| textFromControlOfTarget != textFormControlOfSelectionStart)) { |
| if (Range* range = textFromControlOfTarget->selection()) { |
| return createVisibleSelection(EphemeralRange(range), |
| TextAffinity::Downstream, |
| selection.isDirectional()); |
| } |
| } |
| return selection; |
| } |
| |
| // Function considers Mac editing behavior a fallback when Page or Settings is |
| // not available. |
| EditingBehavior Editor::behavior() const { |
| if (!frame().settings()) |
| return EditingBehavior(EditingMacBehavior); |
| |
| return EditingBehavior(frame().settings()->editingBehaviorType()); |
| } |
| |
| static EditorClient& emptyEditorClient() { |
| DEFINE_STATIC_LOCAL(EmptyEditorClient, client, ()); |
| return client; |
| } |
| |
| EditorClient& Editor::client() const { |
| if (Page* page = frame().page()) |
| return page->editorClient(); |
| return emptyEditorClient(); |
| } |
| |
| bool Editor::handleTextEvent(TextEvent* event) { |
| // Default event handling for Drag and Drop will be handled by DragController |
| // so we leave the event for it. |
| if (event->isDrop()) |
| return false; |
| |
| // TODO(xiaochengh): The use of updateStyleAndLayoutIgnorePendingStylesheets |
| // needs to be audited. See http://crbug.com/590369 for more details. |
| m_frame->document()->updateStyleAndLayoutIgnorePendingStylesheets(); |
| |
| if (event->isPaste()) { |
| if (event->pastingFragment()) |
| replaceSelectionWithFragment(event->pastingFragment(), false, |
| event->shouldSmartReplace(), |
| event->shouldMatchStyle()); |
| else |
| replaceSelectionWithText(event->data(), false, |
| event->shouldSmartReplace()); |
| return true; |
| } |
| |
| String data = event->data(); |
| if (data == "\n") { |
| if (event->isLineBreak()) |
| return insertLineBreak(); |
| return insertParagraphSeparator(); |
| } |
| |
| return insertTextWithoutSendingTextEvent(data, false, event); |
| } |
| |
| bool Editor::canEdit() const { |
| return frame().selection().rootEditableElement(); |
| } |
| |
| bool Editor::canEditRichly() const { |
| return frame().selection().isContentRichlyEditable(); |
| } |
| |
| // WinIE uses onbeforecut and onbeforepaste to enables the cut and paste menu |
| // items. They also send onbeforecopy, apparently for symmetry, but it doesn't |
| // affect the menu items. We need to use onbeforecopy as a real menu enabler |
| // because we allow elements that are not normally selectable to implement |
| // copy/paste (like divs, or a document body). |
| |
| bool Editor::canDHTMLCut() { |
| return !frame().selection().isInPasswordField() && |
| !dispatchCPPEvent(EventTypeNames::beforecut, DataTransferNumb); |
| } |
| |
| bool Editor::canDHTMLCopy() { |
| return !frame().selection().isInPasswordField() && |
| !dispatchCPPEvent(EventTypeNames::beforecopy, DataTransferNumb); |
| } |
| |
| bool Editor::canCut() const { |
| return canCopy() && canDelete(); |
| } |
| |
| static HTMLImageElement* imageElementFromImageDocument(Document* document) { |
| if (!document) |
| return 0; |
| if (!document->isImageDocument()) |
| return 0; |
| |
| HTMLElement* body = document->body(); |
| if (!body) |
| return 0; |
| |
| Node* node = body->firstChild(); |
| if (!isHTMLImageElement(node)) |
| return 0; |
| return toHTMLImageElement(node); |
| } |
| |
| bool Editor::canCopy() const { |
| if (imageElementFromImageDocument(frame().document())) |
| return true; |
| FrameSelection& selection = frame().selection(); |
| return selection.isRange() && !selection.isInPasswordField(); |
| } |
| |
| bool Editor::canPaste() const { |
| return canEdit(); |
| } |
| |
| bool Editor::canDelete() const { |
| FrameSelection& selection = frame().selection(); |
| return selection.isRange() && selection.rootEditableElement(); |
| } |
| |
| bool Editor::smartInsertDeleteEnabled() const { |
| if (Settings* settings = frame().settings()) |
| return settings->smartInsertDeleteEnabled(); |
| return false; |
| } |
| |
| bool Editor::canSmartCopyOrDelete() const { |
| return smartInsertDeleteEnabled() && |
| frame().selection().granularity() == WordGranularity; |
| } |
| |
| bool Editor::isSelectTrailingWhitespaceEnabled() const { |
| if (Settings* settings = frame().settings()) |
| return settings->selectTrailingWhitespaceEnabled(); |
| return false; |
| } |
| |
| bool Editor::deleteWithDirection(DeleteDirection direction, |
| TextGranularity granularity, |
| bool killRing, |
| bool isTypingAction) { |
| if (!canEdit()) |
| return false; |
| |
| EditingState editingState; |
| if (frame().selection().isRange()) { |
| if (isTypingAction) { |
| DCHECK(frame().document()); |
| TypingCommand::deleteKeyPressed( |
| *frame().document(), |
| canSmartCopyOrDelete() ? TypingCommand::SmartDelete : 0, granularity); |
| revealSelectionAfterEditingOperation(); |
| } else { |
| if (killRing) |
| addToKillRing(selectedRange()); |
| deleteSelectionWithSmartDelete( |
| canSmartCopyOrDelete() ? DeleteMode::Smart : DeleteMode::Simple, |
| deletionInputTypeFromTextGranularity(direction, granularity)); |
| // Implicitly calls revealSelectionAfterEditingOperation(). |
| } |
| } else { |
| TypingCommand::Options options = 0; |
| if (canSmartCopyOrDelete()) |
| options |= TypingCommand::SmartDelete; |
| if (killRing) |
| options |= TypingCommand::KillRing; |
| switch (direction) { |
| case DeleteDirection::Forward: |
| DCHECK(frame().document()); |
| TypingCommand::forwardDeleteKeyPressed( |
| *frame().document(), &editingState, options, granularity); |
| if (editingState.isAborted()) |
| return false; |
| break; |
| case DeleteDirection::Backward: |
| DCHECK(frame().document()); |
| TypingCommand::deleteKeyPressed(*frame().document(), options, |
| granularity); |
| break; |
| } |
| revealSelectionAfterEditingOperation(); |
| } |
| |
| // FIXME: We should to move this down into deleteKeyPressed. |
| // clear the "start new kill ring sequence" setting, because it was set to |
| // true when the selection was updated by deleting the range |
| if (killRing) |
| setStartNewKillRingSequence(false); |
| |
| return true; |
| } |
| |
| void Editor::deleteSelectionWithSmartDelete( |
| DeleteMode deleteMode, |
| InputEvent::InputType inputType, |
| const Position& referenceMovePosition) { |
| if (frame().selection().isNone()) |
| return; |
| |
| const bool kMergeBlocksAfterDelete = true; |
| const bool kExpandForSpecialElements = false; |
| const bool kSanitizeMarkup = true; |
| DCHECK(frame().document()); |
| DeleteSelectionCommand::create( |
| *frame().document(), deleteMode == DeleteMode::Smart, |
| kMergeBlocksAfterDelete, kExpandForSpecialElements, kSanitizeMarkup, |
| inputType, referenceMovePosition) |
| ->apply(); |
| } |
| |
| void Editor::pasteAsPlainText(const String& pastingText, bool smartReplace) { |
| Element* target = findEventTargetFromSelection(); |
| if (!target) |
| return; |
| target->dispatchEvent(TextEvent::createForPlainTextPaste( |
| frame().domWindow(), pastingText, smartReplace)); |
| } |
| |
| void Editor::pasteAsFragment(DocumentFragment* pastingFragment, |
| bool smartReplace, |
| bool matchStyle) { |
| Element* target = findEventTargetFromSelection(); |
| if (!target) |
| return; |
| target->dispatchEvent(TextEvent::createForFragmentPaste( |
| frame().domWindow(), pastingFragment, smartReplace, matchStyle)); |
| } |
| |
| bool Editor::tryDHTMLCopy() { |
| if (frame().selection().isInPasswordField()) |
| return false; |
| |
| return !dispatchCPPEvent(EventTypeNames::copy, DataTransferWritable); |
| } |
| |
| bool Editor::tryDHTMLCut() { |
| if (frame().selection().isInPasswordField()) |
| return false; |
| |
| return !dispatchCPPEvent(EventTypeNames::cut, DataTransferWritable); |
| } |
| |
| bool Editor::tryDHTMLPaste(PasteMode pasteMode) { |
| return !dispatchCPPEvent(EventTypeNames::paste, DataTransferReadable, |
| pasteMode); |
| } |
| |
| void Editor::pasteAsPlainTextWithPasteboard(Pasteboard* pasteboard) { |
| String text = pasteboard->plainText(); |
| pasteAsPlainText(text, canSmartReplaceWithPasteboard(pasteboard)); |
| } |
| |
| void Editor::pasteWithPasteboard(Pasteboard* pasteboard) { |
| DocumentFragment* fragment = nullptr; |
| bool chosePlainText = false; |
| |
| if (pasteboard->isHTMLAvailable()) { |
| unsigned fragmentStart = 0; |
| unsigned fragmentEnd = 0; |
| KURL url; |
| String markup = pasteboard->readHTML(url, fragmentStart, fragmentEnd); |
| if (!markup.isEmpty()) { |
| DCHECK(frame().document()); |
| fragment = createFragmentFromMarkupWithContext( |
| *frame().document(), markup, fragmentStart, fragmentEnd, url, |
| DisallowScriptingAndPluginContent); |
| } |
| } |
| |
| if (!fragment) { |
| String text = pasteboard->plainText(); |
| if (!text.isEmpty()) { |
| chosePlainText = true; |
| fragment = createFragmentFromText(selectedRange(), text); |
| } |
| } |
| |
| if (fragment) |
| pasteAsFragment(fragment, canSmartReplaceWithPasteboard(pasteboard), |
| chosePlainText); |
| } |
| |
| void Editor::writeSelectionToPasteboard() { |
| KURL url = frame().document()->url(); |
| String html = frame().selection().selectedHTMLForClipboard(); |
| String plainText = frame().selectedTextForClipboard(); |
| Pasteboard::generalPasteboard()->writeHTML(html, url, plainText, |
| canSmartCopyOrDelete()); |
| } |
| |
| static PassRefPtr<Image> imageFromNode(const Node& node) { |
| DCHECK(!node.document().needsLayoutTreeUpdate()); |
| DocumentLifecycle::DisallowTransitionScope disallowTransition( |
| node.document().lifecycle()); |
| |
| LayoutObject* layoutObject = node.layoutObject(); |
| if (!layoutObject) |
| return nullptr; |
| |
| if (layoutObject->isCanvas()) |
| return toHTMLCanvasElement(node).copiedImage(FrontBuffer, |
| PreferNoAcceleration); |
| |
| if (layoutObject->isImage()) { |
| LayoutImage* layoutImage = toLayoutImage(layoutObject); |
| if (!layoutImage) |
| return nullptr; |
| |
| ImageResource* cachedImage = layoutImage->cachedImage(); |
| if (!cachedImage || cachedImage->errorOccurred()) |
| return nullptr; |
| return cachedImage->getImage(); |
| } |
| |
| return nullptr; |
| } |
| |
| static void writeImageNodeToPasteboard(Pasteboard* pasteboard, |
| Node* node, |
| const String& title) { |
| DCHECK(pasteboard); |
| DCHECK(node); |
| |
| RefPtr<Image> image = imageFromNode(*node); |
| if (!image.get()) |
| return; |
| |
| // FIXME: This should probably be reconciled with |
| // HitTestResult::absoluteImageURL. |
| AtomicString urlString; |
| if (isHTMLImageElement(*node) || isHTMLInputElement(*node)) |
| urlString = toHTMLElement(node)->getAttribute(srcAttr); |
| else if (isSVGImageElement(*node)) |
| urlString = toSVGElement(node)->imageSourceURL(); |
| else if (isHTMLEmbedElement(*node) || isHTMLObjectElement(*node) || |
| isHTMLCanvasElement(*node)) |
| urlString = toHTMLElement(node)->imageSourceURL(); |
| KURL url = urlString.isEmpty() |
| ? KURL() |
| : node->document().completeURL( |
| stripLeadingAndTrailingHTMLSpaces(urlString)); |
| |
| pasteboard->writeImage(image.get(), url, title); |
| } |
| |
| // Returns whether caller should continue with "the default processing", which |
| // is the same as the event handler NOT setting the return value to false |
| bool Editor::dispatchCPPEvent(const AtomicString& eventType, |
| DataTransferAccessPolicy policy, |
| PasteMode pasteMode) { |
| Element* target = findEventTargetFromSelection(); |
| if (!target) |
| return true; |
| |
| DataTransfer* dataTransfer = |
| DataTransfer::create(DataTransfer::CopyAndPaste, policy, |
| policy == DataTransferWritable |
| ? DataObject::create() |
| : DataObject::createFromPasteboard(pasteMode)); |
| |
| Event* evt = ClipboardEvent::create(eventType, true, true, dataTransfer); |
| target->dispatchEvent(evt); |
| bool noDefaultProcessing = evt->defaultPrevented(); |
| if (noDefaultProcessing && policy == DataTransferWritable) |
| Pasteboard::generalPasteboard()->writeDataObject( |
| dataTransfer->dataObject()); |
| |
| // invalidate clipboard here for security |
| dataTransfer->setAccessPolicy(DataTransferNumb); |
| |
| return !noDefaultProcessing; |
| } |
| |
| bool Editor::canSmartReplaceWithPasteboard(Pasteboard* pasteboard) { |
| return smartInsertDeleteEnabled() && pasteboard->canSmartReplace(); |
| } |
| |
| void Editor::replaceSelectionWithFragment(DocumentFragment* fragment, |
| bool selectReplacement, |
| bool smartReplace, |
| bool matchStyle) { |
| DCHECK(!frame().document()->needsLayoutTreeUpdate()); |
| if (frame().selection().isNone() || |
| !frame().selection().isContentEditable() || !fragment) |
| return; |
| |
| ReplaceSelectionCommand::CommandOptions options = |
| ReplaceSelectionCommand::PreventNesting | |
| ReplaceSelectionCommand::SanitizeFragment; |
| if (selectReplacement) |
| options |= ReplaceSelectionCommand::SelectReplacement; |
| if (smartReplace) |
| options |= ReplaceSelectionCommand::SmartReplace; |
| if (matchStyle) |
| options |= ReplaceSelectionCommand::MatchStyle; |
| DCHECK(frame().document()); |
| ReplaceSelectionCommand::create(*frame().document(), fragment, options, |
| InputEvent::InputType::InsertFromPaste) |
| ->apply(); |
| revealSelectionAfterEditingOperation(); |
| } |
| |
| void Editor::replaceSelectionWithText(const String& text, |
| bool selectReplacement, |
| bool smartReplace) { |
| replaceSelectionWithFragment(createFragmentFromText(selectedRange(), text), |
| selectReplacement, smartReplace, true); |
| } |
| |
| // TODO(xiaochengh): Merge it with |replaceSelectionWithFragment()|. |
| void Editor::replaceSelectionAfterDragging(DocumentFragment* fragment, |
| InsertMode insertMode, |
| DragSourceType dragSourceType) { |
| ReplaceSelectionCommand::CommandOptions options = |
| ReplaceSelectionCommand::SelectReplacement | |
| ReplaceSelectionCommand::PreventNesting; |
| if (insertMode == InsertMode::Smart) |
| options |= ReplaceSelectionCommand::SmartReplace; |
| if (dragSourceType == DragSourceType::PlainTextSource) |
| options |= ReplaceSelectionCommand::MatchStyle; |
| DCHECK(frame().document()); |
| ReplaceSelectionCommand::create(*frame().document(), fragment, options, |
| InputEvent::InputType::InsertFromDrop) |
| ->apply(); |
| } |
| |
| bool Editor::deleteSelectionAfterDraggingWithEvents( |
| Element* dragSource, |
| DeleteMode deleteMode, |
| const Position& referenceMovePosition) { |
| if (!dragSource || !dragSource->isConnected()) |
| return true; |
| |
| // Dispatch 'beforeinput'. |
| const bool shouldDelete = dispatchBeforeInputEditorCommand( |
| dragSource, InputEvent::InputType::DeleteByDrag, |
| nullptr) == DispatchEventResult::NotCanceled; |
| |
| // 'beforeinput' event handler may destroy frame, return false to cancel |
| // remaining actions; |
| if (m_frame->document()->frame() != m_frame) |
| return false; |
| |
| if (shouldDelete && dragSource->isConnected()) { |
| deleteSelectionWithSmartDelete( |
| deleteMode, InputEvent::InputType::DeleteByDrag, referenceMovePosition); |
| } |
| |
| return true; |
| } |
| |
| bool Editor::replaceSelectionAfterDraggingWithEvents( |
| Element* dropTarget, |
| DragData* dragData, |
| DocumentFragment* fragment, |
| Range* dropCaretRange, |
| InsertMode insertMode, |
| DragSourceType dragSourceType) { |
| if (!dropTarget || !dropTarget->isConnected()) |
| return true; |
| |
| // Dispatch 'beforeinput'. |
| DataTransfer* dataTransfer = |
| DataTransfer::create(DataTransfer::DragAndDrop, DataTransferReadable, |
| dragData->platformData()); |
| dataTransfer->setSourceOperation(dragData->draggingSourceOperationMask()); |
| const bool shouldInsert = |
| dispatchBeforeInputDataTransfer( |
| dropTarget, InputEvent::InputType::InsertFromDrop, dataTransfer, |
| nullptr) == DispatchEventResult::NotCanceled; |
| |
| // 'beforeinput' event handler may destroy frame, return false to cancel |
| // remaining actions; |
| if (m_frame->document()->frame() != m_frame) |
| return false; |
| |
| if (shouldInsert && dropTarget->isConnected()) |
| replaceSelectionAfterDragging(fragment, insertMode, dragSourceType); |
| |
| return true; |
| } |
| |
| EphemeralRange Editor::selectedRange() { |
| return frame().selection().selection().toNormalizedEphemeralRange(); |
| } |
| |
| bool Editor::canDeleteRange(const EphemeralRange& range) const { |
| if (range.isCollapsed()) |
| return false; |
| |
| Node* startContainer = range.startPosition().computeContainerNode(); |
| Node* endContainer = range.endPosition().computeContainerNode(); |
| if (!startContainer || !endContainer) |
| return false; |
| |
| return hasEditableStyle(*startContainer) && hasEditableStyle(*endContainer); |
| } |
| |
| void Editor::notifyComponentsOnChangedSelection() { |
| client().respondToChangedSelection(m_frame, |
| frame().selection().getSelectionType()); |
| setStartNewKillRingSequence(true); |
| } |
| |
| void Editor::respondToChangedContents(const VisibleSelection& endingSelection) { |
| if (frame().settings() && frame().settings()->accessibilityEnabled()) { |
| Node* node = endingSelection.start().anchorNode(); |
| if (AXObjectCache* cache = frame().document()->existingAXObjectCache()) |
| cache->handleEditableTextContentChanged(node); |
| } |
| |
| spellChecker().updateMarkersForWordsAffectedByEditing(true); |
| client().respondToChangedContents(); |
| } |
| |
| void Editor::removeFormattingAndStyle() { |
| DCHECK(frame().document()); |
| RemoveFormatCommand::create(*frame().document())->apply(); |
| } |
| |
| void Editor::registerCommandGroup(CompositeEditCommand* commandGroupWrapper) { |
| DCHECK(commandGroupWrapper->isCommandGroupWrapper()); |
| m_lastEditCommand = commandGroupWrapper; |
| } |
| |
| void Editor::clearLastEditCommand() { |
| m_lastEditCommand.clear(); |
| } |
| |
| Element* Editor::findEventTargetFrom(const VisibleSelection& selection) const { |
| Element* target = associatedElementOf(selection.start()); |
| if (!target) |
| target = frame().document()->body(); |
| |
| return target; |
| } |
| |
| Element* Editor::findEventTargetFromSelection() const { |
| return findEventTargetFrom(frame().selection().selection()); |
| } |
| |
| void Editor::applyStyle(StylePropertySet* style, |
| InputEvent::InputType inputType) { |
| switch (frame().selection().getSelectionType()) { |
| case NoSelection: |
| // do nothing |
| break; |
| case CaretSelection: |
| computeAndSetTypingStyle(style, inputType); |
| break; |
| case RangeSelection: |
| if (style) { |
| DCHECK(frame().document()); |
| ApplyStyleCommand::create(*frame().document(), |
| EditingStyle::create(style), inputType) |
| ->apply(); |
| } |
| break; |
| } |
| } |
| |
| void Editor::applyParagraphStyle(StylePropertySet* style, |
| InputEvent::InputType inputType) { |
| if (frame().selection().isNone() || !style) |
| return; |
| DCHECK(frame().document()); |
| ApplyStyleCommand::create(*frame().document(), EditingStyle::create(style), |
| inputType, ApplyStyleCommand::ForceBlockProperties) |
| ->apply(); |
| } |
| |
| void Editor::applyStyleToSelection(StylePropertySet* style, |
| InputEvent::InputType inputType) { |
| if (!style || style->isEmpty() || !canEditRichly()) |
| return; |
| |
| applyStyle(style, inputType); |
| } |
| |
| void Editor::applyParagraphStyleToSelection(StylePropertySet* style, |
| InputEvent::InputType inputType) { |
| if (!style || style->isEmpty() || !canEditRichly()) |
| return; |
| |
| applyParagraphStyle(style, inputType); |
| } |
| |
| bool Editor::selectionStartHasStyle(CSSPropertyID propertyID, |
| const String& value) const { |
| EditingStyle* styleToCheck = EditingStyle::create(propertyID, value); |
| EditingStyle* styleAtStart = EditingStyle::styleAtSelectionStart( |
| frame().selection().selection(), propertyID == CSSPropertyBackgroundColor, |
| styleToCheck->style()); |
| return styleToCheck->triStateOfStyle(styleAtStart); |
| } |
| |
| TriState Editor::selectionHasStyle(CSSPropertyID propertyID, |
| const String& value) const { |
| return EditingStyle::create(propertyID, value) |
| ->triStateOfStyle(frame().selection().selection()); |
| } |
| |
| String Editor::selectionStartCSSPropertyValue(CSSPropertyID propertyID) { |
| EditingStyle* selectionStyle = EditingStyle::styleAtSelectionStart( |
| frame().selection().selection(), |
| propertyID == CSSPropertyBackgroundColor); |
| if (!selectionStyle || !selectionStyle->style()) |
| return String(); |
| |
| if (propertyID == CSSPropertyFontSize) |
| return String::number(selectionStyle->legacyFontSize(frame().document())); |
| return selectionStyle->style()->getPropertyValue(propertyID); |
| } |
| |
| static void dispatchEditableContentChangedEvents(Element* startRoot, |
| Element* endRoot) { |
| if (startRoot) |
| startRoot->dispatchEvent( |
| Event::create(EventTypeNames::webkitEditableContentChanged)); |
| if (endRoot && endRoot != startRoot) |
| endRoot->dispatchEvent( |
| Event::create(EventTypeNames::webkitEditableContentChanged)); |
| } |
| |
| void Editor::appliedEditing(CompositeEditCommand* cmd) { |
| DCHECK(!cmd->isCommandGroupWrapper()); |
| EventQueueScope scope; |
| frame().document()->updateStyleAndLayout(); |
| |
| // Request spell checking before any further DOM change. |
| spellChecker().markMisspellingsAfterApplyingCommand(*cmd); |
| |
| EditCommandComposition* composition = cmd->composition(); |
| DCHECK(composition); |
| dispatchEditableContentChangedEvents( |
| composition->startingRootEditableElement(), |
| composition->endingRootEditableElement()); |
| // TODO(chongz): Filter empty InputType after spec is finalized. |
| dispatchInputEventEditableContentChanged( |
| composition->startingRootEditableElement(), |
| composition->endingRootEditableElement(), cmd->inputType(), |
| cmd->textDataForInputEvent(), isComposingFromCommand(cmd)); |
| VisibleSelection newSelection(cmd->endingSelection()); |
| |
| // Don't clear the typing style with this selection change. We do those things |
| // elsewhere if necessary. |
| changeSelectionAfterCommand(newSelection, 0); |
| |
| if (!cmd->preservesTypingStyle()) |
| frame().selection().clearTypingStyle(); |
| |
| // Command will be equal to last edit command only in the case of typing |
| if (m_lastEditCommand.get() == cmd) { |
| DCHECK(cmd->isTypingCommand()); |
| } else if (m_lastEditCommand && m_lastEditCommand->isDragAndDropCommand() && |
| (cmd->inputType() == InputEvent::InputType::DeleteByDrag || |
| cmd->inputType() == InputEvent::InputType::InsertFromDrop)) { |
| // Only register undo entry when combined with other commands. |
| if (!m_lastEditCommand->composition()) |
| m_undoStack->registerUndoStep(m_lastEditCommand->ensureComposition()); |
| m_lastEditCommand->appendCommandToComposite(cmd); |
| } else { |
| // Only register a new undo command if the command passed in is |
| // different from the last command |
| m_lastEditCommand = cmd; |
| m_undoStack->registerUndoStep(m_lastEditCommand->ensureComposition()); |
| } |
| |
| respondToChangedContents(newSelection); |
| } |
| |
| void Editor::unappliedEditing(EditCommandComposition* cmd) { |
| EventQueueScope scope; |
| frame().document()->updateStyleAndLayout(); |
| |
| dispatchEditableContentChangedEvents(cmd->startingRootEditableElement(), |
| cmd->endingRootEditableElement()); |
| dispatchInputEventEditableContentChanged( |
| cmd->startingRootEditableElement(), cmd->endingRootEditableElement(), |
| InputEvent::InputType::Undo, nullAtom, |
| InputEvent::EventIsComposing::NotComposing); |
| |
| VisibleSelection newSelection(cmd->startingSelection()); |
| newSelection.validatePositionsIfNeeded(); |
| if (newSelection.start().document() == frame().document() && |
| newSelection.end().document() == frame().document()) |
| changeSelectionAfterCommand( |
| newSelection, |
| FrameSelection::CloseTyping | FrameSelection::ClearTypingStyle); |
| |
| m_lastEditCommand = nullptr; |
| m_undoStack->registerRedoStep(cmd); |
| respondToChangedContents(newSelection); |
| } |
| |
| void Editor::reappliedEditing(EditCommandComposition* cmd) { |
| EventQueueScope scope; |
| frame().document()->updateStyleAndLayout(); |
| |
| dispatchEditableContentChangedEvents(cmd->startingRootEditableElement(), |
| cmd->endingRootEditableElement()); |
| dispatchInputEventEditableContentChanged( |
| cmd->startingRootEditableElement(), cmd->endingRootEditableElement(), |
| InputEvent::InputType::Redo, nullAtom, |
| InputEvent::EventIsComposing::NotComposing); |
| |
| // TODO(yosin): Since |dispatchEditableContentChangedEvents()| and |
| // |dispatchInputEventEditableContentChanged()|, we would like to know |
| // such case. Once we have a case, this |DCHECK()| should be replaced |
| // with if-statement. |
| DCHECK(frame().document()); |
| VisibleSelection newSelection(cmd->endingSelection()); |
| if (newSelection.isValidFor(*frame().document())) |
| changeSelectionAfterCommand( |
| newSelection, |
| FrameSelection::CloseTyping | FrameSelection::ClearTypingStyle); |
| |
| m_lastEditCommand = nullptr; |
| m_undoStack->registerUndoStep(cmd); |
| respondToChangedContents(newSelection); |
| } |
| |
| Editor* Editor::create(LocalFrame& frame) { |
| return new Editor(frame); |
| } |
| |
| Editor::Editor(LocalFrame& frame) |
| : m_frame(&frame), |
| m_undoStack(UndoStack::create()), |
| m_preventRevealSelection(0), |
| m_shouldStartNewKillRingSequence(false), |
| // This is off by default, since most editors want this behavior (this |
| // matches IE but not FF). |
| m_shouldStyleWithCSS(false), |
| m_killRing(wrapUnique(new KillRing)), |
| m_areMarkedTextMatchesHighlighted(false), |
| m_defaultParagraphSeparator(EditorParagraphSeparatorIsDiv), |
| m_overwriteModeEnabled(false) {} |
| |
| Editor::~Editor() {} |
| |
| void Editor::clear() { |
| frame().inputMethodController().clear(); |
| m_shouldStyleWithCSS = false; |
| m_defaultParagraphSeparator = EditorParagraphSeparatorIsDiv; |
| m_undoStack->clear(); |
| } |
| |
| bool Editor::insertText(const String& text, KeyboardEvent* triggeringEvent) { |
| return frame().eventHandler().handleTextInputEvent(text, triggeringEvent); |
| } |
| |
| bool Editor::insertTextWithoutSendingTextEvent(const String& text, |
| bool selectInsertedText, |
| TextEvent* triggeringEvent) { |
| if (text.isEmpty()) |
| return false; |
| |
| const VisibleSelection& selection = selectionForCommand(triggeringEvent); |
| if (!selection.isContentEditable()) |
| return false; |
| |
| spellChecker().updateMarkersForWordsAffectedByEditing( |
| isSpaceOrNewline(text[0])); |
| |
| // Insert the text |
| TypingCommand::insertText( |
| *selection.start().document(), text, selection, |
| selectInsertedText ? TypingCommand::SelectInsertedText : 0, |
| triggeringEvent && triggeringEvent->isComposition() |
| ? TypingCommand::TextCompositionConfirm |
| : TypingCommand::TextCompositionNone); |
| |
| // Reveal the current selection |
| if (LocalFrame* editedFrame = selection.start().document()->frame()) { |
| if (Page* page = editedFrame->page()) { |
| LocalFrame* focusedOrMainFrame = |
| toLocalFrame(page->focusController().focusedOrMainFrame()); |
| |
| // TODO(xiaochengh): The use of |
| // updateStyleAndLayoutIgnorePendingStylesheets |
| // needs to be audited. See http://crbug.com/590369 for more details. |
| focusedOrMainFrame->document() |
| ->updateStyleAndLayoutIgnorePendingStylesheets(); |
| |
| focusedOrMainFrame->selection().revealSelection( |
| ScrollAlignment::alignCenterIfNeeded); |
| } |
| } |
| |
| return true; |
| } |
| |
| bool Editor::insertLineBreak() { |
| if (!canEdit()) |
| return false; |
| |
| VisiblePosition caret = frame().selection().selection().visibleStart(); |
| bool alignToEdge = isEndOfEditableOrNonEditableContent(caret); |
| DCHECK(frame().document()); |
| if (!TypingCommand::insertLineBreak(*frame().document())) |
| return false; |
| revealSelectionAfterEditingOperation( |
| alignToEdge ? ScrollAlignment::alignToEdgeIfNeeded |
| : ScrollAlignment::alignCenterIfNeeded); |
| |
| return true; |
| } |
| |
| bool Editor::insertParagraphSeparator() { |
| if (!canEdit()) |
| return false; |
| |
| if (!canEditRichly()) |
| return insertLineBreak(); |
| |
| VisiblePosition caret = frame().selection().selection().visibleStart(); |
| bool alignToEdge = isEndOfEditableOrNonEditableContent(caret); |
| DCHECK(frame().document()); |
| EditingState editingState; |
| if (!TypingCommand::insertParagraphSeparator(*frame().document())) |
| return false; |
| revealSelectionAfterEditingOperation( |
| alignToEdge ? ScrollAlignment::alignToEdgeIfNeeded |
| : ScrollAlignment::alignCenterIfNeeded); |
| |
| return true; |
| } |
| |
| void Editor::cut(EditorCommandSource source) { |
| if (tryDHTMLCut()) |
| return; // DHTML did the whole operation |
| if (!canCut()) |
| return; |
| // TODO(yosin) We should use early return style here. |
| if (canDeleteRange(selectedRange())) { |
| spellChecker().updateMarkersForWordsAffectedByEditing(true); |
| if (enclosingTextFormControl(frame().selection().start())) { |
| String plainText = frame().selectedTextForClipboard(); |
| Pasteboard::generalPasteboard()->writePlainText( |
| plainText, canSmartCopyOrDelete() ? Pasteboard::CanSmartReplace |
| : Pasteboard::CannotSmartReplace); |
| } else { |
| writeSelectionToPasteboard(); |
| } |
| |
| if (source == CommandFromMenuOrKeyBinding) { |
| if (dispatchBeforeInputDataTransfer(findEventTargetFromSelection(), |
| InputEvent::InputType::DeleteByCut, |
| nullptr, nullptr) != |
| DispatchEventResult::NotCanceled) |
| return; |
| // 'beforeinput' event handler may destroy target frame. |
| if (m_frame->document()->frame() != m_frame) |
| return; |
| } |
| deleteSelectionWithSmartDelete( |
| canSmartCopyOrDelete() ? DeleteMode::Smart : DeleteMode::Simple, |
| InputEvent::InputType::DeleteByCut); |
| } |
| } |
| |
| void Editor::copy() { |
| if (tryDHTMLCopy()) |
| return; // DHTML did the whole operation |
| if (!canCopy()) |
| return; |
| if (enclosingTextFormControl(frame().selection().start())) { |
| Pasteboard::generalPasteboard()->writePlainText( |
| frame().selectedTextForClipboard(), |
| canSmartCopyOrDelete() ? Pasteboard::CanSmartReplace |
| : Pasteboard::CannotSmartReplace); |
| } else { |
| Document* document = frame().document(); |
| if (HTMLImageElement* imageElement = |
| imageElementFromImageDocument(document)) |
| writeImageNodeToPasteboard(Pasteboard::generalPasteboard(), imageElement, |
| document->title()); |
| else |
| writeSelectionToPasteboard(); |
| } |
| } |
| |
| void Editor::paste(EditorCommandSource source) { |
| DCHECK(frame().document()); |
| if (tryDHTMLPaste(AllMimeTypes)) |
| return; // DHTML did the whole operation |
| if (!canPaste()) |
| return; |
| spellChecker().updateMarkersForWordsAffectedByEditing(false); |
| ResourceFetcher* loader = frame().document()->fetcher(); |
| ResourceCacheValidationSuppressor validationSuppressor(loader); |
| |
| PasteMode pasteMode = frame().selection().isContentRichlyEditable() |
| ? AllMimeTypes |
| : PlainTextOnly; |
| |
| if (source == CommandFromMenuOrKeyBinding) { |
| DataTransfer* dataTransfer = |
| DataTransfer::create(DataTransfer::CopyAndPaste, DataTransferReadable, |
| DataObject::createFromPasteboard(pasteMode)); |
| |
| if (dispatchBeforeInputDataTransfer(findEventTargetFromSelection(), |
| InputEvent::InputType::InsertFromPaste, |
| dataTransfer, nullptr) != |
| DispatchEventResult::NotCanceled) |
| return; |
| // 'beforeinput' event handler may destroy target frame. |
| if (m_frame->document()->frame() != m_frame) |
| return; |
| } |
| |
| if (pasteMode == AllMimeTypes) |
| pasteWithPasteboard(Pasteboard::generalPasteboard()); |
| else |
| pasteAsPlainTextWithPasteboard(Pasteboard::generalPasteboard()); |
| } |
| |
| void Editor::pasteAsPlainText(EditorCommandSource source) { |
| if (tryDHTMLPaste(PlainTextOnly)) |
| return; |
| if (!canPaste()) |
| return; |
| spellChecker().updateMarkersForWordsAffectedByEditing(false); |
| pasteAsPlainTextWithPasteboard(Pasteboard::generalPasteboard()); |
| } |
| |
| void Editor::performDelete() { |
| if (!canDelete()) |
| return; |
| addToKillRing(selectedRange()); |
| // TODO(chongz): |Editor::performDelete()| has no direction. |
| // https://github.com/w3c/editing/issues/130 |
| deleteSelectionWithSmartDelete( |
| canSmartCopyOrDelete() ? DeleteMode::Smart : DeleteMode::Simple, |
| InputEvent::InputType::DeleteContentBackward); |
| |
| // clear the "start new kill ring sequence" setting, because it was set to |
| // true when the selection was updated by deleting the range |
| setStartNewKillRingSequence(false); |
| } |
| |
| static void countEditingEvent(ExecutionContext* executionContext, |
| const Event* event, |
| UseCounter::Feature featureOnInput, |
| UseCounter::Feature featureOnTextArea, |
| UseCounter::Feature featureOnContentEditable, |
| UseCounter::Feature featureOnNonNode) { |
| EventTarget* eventTarget = event->target(); |
| Node* node = eventTarget->toNode(); |
| if (!node) { |
| UseCounter::count(executionContext, featureOnNonNode); |
| return; |
| } |
| |
| if (isHTMLInputElement(node)) { |
| UseCounter::count(executionContext, featureOnInput); |
| return; |
| } |
| |
| if (isHTMLTextAreaElement(node)) { |
| UseCounter::count(executionContext, featureOnTextArea); |
| return; |
| } |
| |
| HTMLTextFormControlElement* control = enclosingTextFormControl(node); |
| if (isHTMLInputElement(control)) { |
| UseCounter::count(executionContext, featureOnInput); |
| return; |
| } |
| |
| if (isHTMLTextAreaElement(control)) { |
| UseCounter::count(executionContext, featureOnTextArea); |
| return; |
| } |
| |
| UseCounter::count(executionContext, featureOnContentEditable); |
| } |
| |
| void Editor::countEvent(ExecutionContext* executionContext, |
| const Event* event) { |
| if (!executionContext) |
| return; |
| |
| if (event->type() == EventTypeNames::textInput) { |
| countEditingEvent(executionContext, event, |
| UseCounter::TextInputEventOnInput, |
| UseCounter::TextInputEventOnTextArea, |
| UseCounter::TextInputEventOnContentEditable, |
| UseCounter::TextInputEventOnNotNode); |
| return; |
| } |
| |
| if (event->type() == EventTypeNames::webkitBeforeTextInserted) { |
| countEditingEvent(executionContext, event, |
| UseCounter::WebkitBeforeTextInsertedOnInput, |
| UseCounter::WebkitBeforeTextInsertedOnTextArea, |
| UseCounter::WebkitBeforeTextInsertedOnContentEditable, |
| UseCounter::WebkitBeforeTextInsertedOnNotNode); |
| return; |
| } |
| |
| if (event->type() == EventTypeNames::webkitEditableContentChanged) { |
| countEditingEvent(executionContext, event, |
| UseCounter::WebkitEditableContentChangedOnInput, |
| UseCounter::WebkitEditableContentChangedOnTextArea, |
| UseCounter::WebkitEditableContentChangedOnContentEditable, |
| UseCounter::WebkitEditableContentChangedOnNotNode); |
| } |
| } |
| |
| void Editor::copyImage(const HitTestResult& result) { |
| writeImageNodeToPasteboard(Pasteboard::generalPasteboard(), |
| result.innerNodeOrImageMapImage(), |
| result.altDisplayString()); |
| } |
| |
| bool Editor::canUndo() { |
| return m_undoStack->canUndo(); |
| } |
| |
| void Editor::undo() { |
| m_undoStack->undo(); |
| } |
| |
| bool Editor::canRedo() { |
| return m_undoStack->canRedo(); |
| } |
| |
| void Editor::redo() { |
| m_undoStack->redo(); |
| } |
| |
| void Editor::setBaseWritingDirection(WritingDirection direction) { |
| Element* focusedElement = frame().document()->focusedElement(); |
| if (isHTMLTextFormControlElement(focusedElement)) { |
| if (direction == NaturalWritingDirection) |
| return; |
| focusedElement->setAttribute( |
| dirAttr, direction == LeftToRightWritingDirection ? "ltr" : "rtl"); |
| focusedElement->dispatchInputEvent(); |
| frame().document()->updateStyleAndLayoutTree(); |
| return; |
| } |
| |
| MutableStylePropertySet* style = |
| MutableStylePropertySet::create(HTMLQuirksMode); |
| style->setProperty( |
| CSSPropertyDirection, |
| direction == LeftToRightWritingDirection |
| ? "ltr" |
| : direction == RightToLeftWritingDirection ? "rtl" : "inherit", |
| false); |
| applyParagraphStyleToSelection(style, |
| InputEvent::InputType::SetWritingDirection); |
| } |
| |
| void Editor::revealSelectionAfterEditingOperation( |
| const ScrollAlignment& alignment, |
| RevealExtentOption revealExtentOption) { |
| if (m_preventRevealSelection) |
| return; |
| |
| // TODO(xiaochengh): The use of updateStyleAndLayoutIgnorePendingStylesheets |
| // needs to be audited. See http://crbug.com/590369 for more details. |
| frame().document()->updateStyleAndLayoutIgnorePendingStylesheets(); |
| |
| frame().selection().revealSelection(alignment, revealExtentOption); |
| } |
| |
| void Editor::transpose() { |
| if (!canEdit()) |
| return; |
| |
| VisibleSelection selection = frame().selection().selection(); |
| if (!selection.isCaret()) |
| return; |
| |
| // Make a selection that goes back one character and forward two characters. |
| VisiblePosition caret = selection.visibleStart(); |
| VisiblePosition next = |
| isEndOfParagraph(caret) ? caret : nextPositionOf(caret); |
| VisiblePosition previous = previousPositionOf(next); |
| if (next.deepEquivalent() == previous.deepEquivalent()) |
| return; |
| previous = previousPositionOf(previous); |
| if (!inSameParagraph(next, previous)) |
| return; |
| const EphemeralRange range = makeRange(previous, next); |
| if (range.isNull()) |
| return; |
| VisibleSelection newSelection = createVisibleSelection(range); |
| |
| // Transpose the two characters. |
| String text = plainText(range); |
| if (text.length() != 2) |
| return; |
| String transposed = text.right(1) + text.left(1); |
| |
| // Select the two characters. |
| if (newSelection != frame().selection().selection()) |
| frame().selection().setSelection(newSelection); |
| |
| // Insert the transposed characters. |
| replaceSelectionWithText(transposed, false, false); |
| } |
| |
| void Editor::addToKillRing(const EphemeralRange& range) { |
| if (m_shouldStartNewKillRingSequence) |
| killRing().startNewSequence(); |
| |
| DCHECK(!frame().document()->needsLayoutTreeUpdate()); |
| String text = plainText(range); |
| killRing().append(text); |
| m_shouldStartNewKillRingSequence = false; |
| } |
| |
| void Editor::changeSelectionAfterCommand( |
| const VisibleSelection& newSelection, |
| FrameSelection::SetSelectionOptions options) { |
| // If the new selection is orphaned, then don't update the selection. |
| if (newSelection.start().isOrphan() || newSelection.end().isOrphan()) |
| return; |
| |
| // See <rdar://problem/5729315> Some shouldChangeSelectedDOMRange contain |
| // Ranges for selections that are no longer valid |
| bool selectionDidNotChangeDOMPosition = |
| newSelection == frame().selection().selection(); |
| frame().selection().setSelection(newSelection, options); |
| |
| // Some editing operations change the selection visually without affecting its |
| // position within the DOM. For example when you press return in the following |
| // (the caret is marked by ^): |
| // <div contentEditable="true"><div>^Hello</div></div> |
| // WebCore inserts <div><br></div> *before* the current block, which correctly |
| // moves the paragraph down but which doesn't change the caret's DOM position |
| // (["hello", 0]). In these situations the above FrameSelection::setSelection |
| // call does not call EditorClient::respondToChangedSelection(), which, on the |
| // Mac, sends selection change notifications and starts a new kill ring |
| // sequence, but we want to do these things (matches AppKit). |
| if (selectionDidNotChangeDOMPosition) |
| client().respondToChangedSelection(m_frame, |
| frame().selection().getSelectionType()); |
| } |
| |
| IntRect Editor::firstRectForRange(const EphemeralRange& range) const { |
| DCHECK(!frame().document()->needsLayoutTreeUpdate()); |
| DocumentLifecycle::DisallowTransitionScope disallowTransition( |
| frame().document()->lifecycle()); |
| |
| LayoutUnit extraWidthToEndOfLine; |
| DCHECK(range.isNotNull()); |
| |
| IntRect startCaretRect = |
| RenderedPosition( |
| createVisiblePosition(range.startPosition()).deepEquivalent(), |
| TextAffinity::Downstream) |
| .absoluteRect(&extraWidthToEndOfLine); |
| if (startCaretRect.isEmpty()) |
| return IntRect(); |
| |
| IntRect endCaretRect = |
| RenderedPosition( |
| createVisiblePosition(range.endPosition()).deepEquivalent(), |
| TextAffinity::Upstream) |
| .absoluteRect(); |
| if (endCaretRect.isEmpty()) |
| return IntRect(); |
| |
| if (startCaretRect.y() == endCaretRect.y()) { |
| // start and end are on the same line |
| return IntRect(std::min(startCaretRect.x(), endCaretRect.x()), |
| startCaretRect.y(), |
| abs(endCaretRect.x() - startCaretRect.x()), |
| std::max(startCaretRect.height(), endCaretRect.height())); |
| } |
| |
| // start and end aren't on the same line, so go from start to the end of its |
| // line |
| return IntRect(startCaretRect.x(), startCaretRect.y(), |
| (startCaretRect.width() + extraWidthToEndOfLine).toInt(), |
| startCaretRect.height()); |
| } |
| |
| void Editor::computeAndSetTypingStyle(StylePropertySet* style, |
| InputEvent::InputType inputType) { |
| if (!style || style->isEmpty()) { |
| frame().selection().clearTypingStyle(); |
| return; |
| } |
| |
| // Calculate the current typing style. |
| EditingStyle* typingStyle = nullptr; |
| if (frame().selection().typingStyle()) { |
| typingStyle = frame().selection().typingStyle()->copy(); |
| typingStyle->overrideWithStyle(style); |
| } else { |
| typingStyle = EditingStyle::create(style); |
| } |
| |
| typingStyle->prepareToApplyAt( |
| frame().selection().selection().visibleStart().deepEquivalent(), |
| EditingStyle::PreserveWritingDirection); |
| |
| // Handle block styles, substracting these from the typing style. |
| EditingStyle* blockStyle = typingStyle->extractAndRemoveBlockProperties(); |
| if (!blockStyle->isEmpty()) { |
| DCHECK(frame().document()); |
| ApplyStyleCommand::create(*frame().document(), blockStyle, inputType) |
| ->apply(); |
| } |
| |
| // Set the remaining style as the typing style. |
| frame().selection().setTypingStyle(typingStyle); |
| } |
| |
| bool Editor::findString(const String& target, FindOptions options) { |
| VisibleSelection selection = frame().selection().selection(); |
| |
| // TODO(yosin) We should make |findRangeOfString()| to return |
| // |EphemeralRange| rather than|Range| object. |
| Range* resultRange = findRangeOfString( |
| target, EphemeralRange(selection.start(), selection.end()), |
| static_cast<FindOptions>(options | FindAPICall)); |
| |
| if (!resultRange) |
| return false; |
| |
| frame().selection().setSelection( |
| createVisibleSelection(EphemeralRange(resultRange))); |
| frame().selection().revealSelection(); |
| return true; |
| } |
| |
| Range* Editor::findStringAndScrollToVisible(const String& target, |
| Range* previousMatch, |
| FindOptions options) { |
| Range* nextMatch = findRangeOfString( |
| target, EphemeralRangeInFlatTree(previousMatch), options); |
| if (!nextMatch) |
| return nullptr; |
| |
| Node* firstNode = nextMatch->firstNode(); |
| firstNode->layoutObject()->scrollRectToVisible( |
| LayoutRect(nextMatch->boundingBox()), |
| ScrollAlignment::alignCenterIfNeeded, |
| ScrollAlignment::alignCenterIfNeeded, UserScroll); |
| firstNode->document().setSequentialFocusNavigationStartingPoint(firstNode); |
| |
| return nextMatch; |
| } |
| |
| // TODO(yosin) We should return |EphemeralRange| rather than |Range|. We use |
| // |Range| object for checking whether start and end position crossing shadow |
| // boundaries, however we can do it without |Range| object. |
| template <typename Strategy> |
| static Range* findStringBetweenPositions( |
| const String& target, |
| const EphemeralRangeTemplate<Strategy>& referenceRange, |
| FindOptions options) { |
| EphemeralRangeTemplate<Strategy> searchRange(referenceRange); |
| |
| bool forward = !(options & Backwards); |
| |
| while (true) { |
| EphemeralRangeTemplate<Strategy> resultRange = |
| findPlainText(searchRange, target, options); |
| if (resultRange.isCollapsed()) |
| return nullptr; |
| |
| Range* rangeObject = |
| Range::create(resultRange.document(), |
| toPositionInDOMTree(resultRange.startPosition()), |
| toPositionInDOMTree(resultRange.endPosition())); |
| if (!rangeObject->collapsed()) |
| return rangeObject; |
| |
| // Found text spans over multiple TreeScopes. Since it's impossible to |
| // return such section as a Range, we skip this match and seek for the |
| // next occurrence. |
| // TODO(yosin) Handle this case. |
| if (forward) { |
| searchRange = EphemeralRangeTemplate<Strategy>( |
| nextPositionOf(resultRange.startPosition(), |
| PositionMoveType::GraphemeCluster), |
| searchRange.endPosition()); |
| } else { |
| searchRange = EphemeralRangeTemplate<Strategy>( |
| searchRange.startPosition(), |
| previousPositionOf(resultRange.endPosition(), |
| PositionMoveType::GraphemeCluster)); |
| } |
| } |
| |
| NOTREACHED(); |
| return nullptr; |
| } |
| |
| template <typename Strategy> |
| static Range* findRangeOfStringAlgorithm( |
| Document& document, |
| const String& target, |
| const EphemeralRangeTemplate<Strategy>& referenceRange, |
| FindOptions options) { |
| if (target.isEmpty()) |
| return nullptr; |
| |
| // Start from an edge of the reference range. Which edge is used depends on |
| // whether we're searching forward or backward, and whether startInSelection |
| // is set. |
| EphemeralRangeTemplate<Strategy> documentRange = |
| EphemeralRangeTemplate<Strategy>::rangeOfContents(document); |
| EphemeralRangeTemplate<Strategy> searchRange(documentRange); |
| |
| bool forward = !(options & Backwards); |
| bool startInReferenceRange = false; |
| if (referenceRange.isNotNull()) { |
| startInReferenceRange = options & StartInSelection; |
| if (forward && startInReferenceRange) |
| searchRange = EphemeralRangeTemplate<Strategy>( |
| referenceRange.startPosition(), documentRange.endPosition()); |
| else if (forward) |
| searchRange = EphemeralRangeTemplate<Strategy>( |
| referenceRange.endPosition(), documentRange.endPosition()); |
| else if (startInReferenceRange) |
| searchRange = EphemeralRangeTemplate<Strategy>( |
| documentRange.startPosition(), referenceRange.endPosition()); |
| else |
| searchRange = EphemeralRangeTemplate<Strategy>( |
| documentRange.startPosition(), referenceRange.startPosition()); |
| } |
| |
| Range* resultRange = findStringBetweenPositions(target, searchRange, options); |
| |
| // If we started in the reference range and the found range exactly matches |
| // the reference range, find again. Build a selection with the found range |
| // to remove collapsed whitespace. Compare ranges instead of selection |
| // objects to ignore the way that the current selection was made. |
| if (resultRange && startInReferenceRange && |
| normalizeRange(EphemeralRangeTemplate<Strategy>(resultRange)) == |
| referenceRange) { |
| if (forward) |
| searchRange = EphemeralRangeTemplate<Strategy>( |
| fromPositionInDOMTree<Strategy>(resultRange->endPosition()), |
| searchRange.endPosition()); |
| else |
| searchRange = EphemeralRangeTemplate<Strategy>( |
| searchRange.startPosition(), |
| fromPositionInDOMTree<Strategy>(resultRange->startPosition())); |
| resultRange = findStringBetweenPositions(target, searchRange, options); |
| } |
| |
| if (!resultRange && options & WrapAround) |
| return findStringBetweenPositions(target, documentRange, options); |
| |
| return resultRange; |
| } |
| |
| Range* Editor::findRangeOfString(const String& target, |
| const EphemeralRange& reference, |
| FindOptions options) { |
| return findRangeOfStringAlgorithm<EditingStrategy>( |
| *frame().document(), target, reference, options); |
| } |
| |
| Range* Editor::findRangeOfString(const String& target, |
| const EphemeralRangeInFlatTree& reference, |
| FindOptions options) { |
| return findRangeOfStringAlgorithm<EditingInFlatTreeStrategy>( |
| *frame().document(), target, reference, options); |
| } |
| |
| void Editor::setMarkedTextMatchesAreHighlighted(bool flag) { |
| if (flag == m_areMarkedTextMatchesHighlighted) |
| return; |
| |
| m_areMarkedTextMatchesHighlighted = flag; |
| frame().document()->markers().repaintMarkers(DocumentMarker::TextMatch); |
| } |
| |
| void Editor::respondToChangedSelection( |
| const VisibleSelection& oldSelection, |
| FrameSelection::SetSelectionOptions options) { |
| spellChecker().respondToChangedSelection(oldSelection, options); |
| frame().inputMethodController().cancelCompositionIfSelectionIsInvalid(); |
| notifyComponentsOnChangedSelection(); |
| } |
| |
| SpellChecker& Editor::spellChecker() const { |
| return frame().spellChecker(); |
| } |
| |
| void Editor::toggleOverwriteModeEnabled() { |
| m_overwriteModeEnabled = !m_overwriteModeEnabled; |
| frame().selection().setShouldShowBlockCursor(m_overwriteModeEnabled); |
| } |
| |
| // TODO(tkent): This is a workaround of some crash bugs in the editing code, |
| // which assumes a document has a valid HTML structure. We should make the |
| // editing code more robust, and should remove this hack. crbug.com/580941. |
| void Editor::tidyUpHTMLStructure(Document& document) { |
| // hasEditableStyle() needs up-to-date ComputedStyle. |
| document.updateStyleAndLayoutTree(); |
| bool needsValidStructure = hasEditableStyle(document) || |
| (document.documentElement() && |
| hasEditableStyle(*document.documentElement())); |
| if (!needsValidStructure) |
| return; |
| Element* existingHead = nullptr; |
| Element* existingBody = nullptr; |
| Element* currentRoot = document.documentElement(); |
| if (currentRoot) { |
| if (isHTMLHtmlElement(currentRoot)) |
| return; |
| if (isHTMLHeadElement(currentRoot)) |
| existingHead = currentRoot; |
| else if (isHTMLBodyElement(currentRoot)) |
| existingBody = currentRoot; |
| else if (isHTMLFrameSetElement(currentRoot)) |
| existingBody = currentRoot; |
| } |
| // We ensure only "the root is <html>." |
| // documentElement as rootEditableElement is problematic. So we move |
| // non-<html> root elements under <body>, and the <body> works as |
| // rootEditableElement. |
| document.addConsoleMessage(ConsoleMessage::create( |
| JSMessageSource, WarningMessageLevel, |
| "document.execCommand() doesn't work with an invalid HTML structure. It " |
| "is corrected automatically.")); |
| UseCounter::count(document, UseCounter::ExecCommandAltersHTMLStructure); |
| |
| Element* root = HTMLHtmlElement::create(document); |
| if (existingHead) |
| root->appendChild(existingHead); |
| Element* body = nullptr; |
| if (existingBody) |
| body = existingBody; |
| else |
| body = HTMLBodyElement::create(document); |
| if (document.documentElement() && body != document.documentElement()) |
| body->appendChild(document.documentElement()); |
| root->appendChild(body); |
| DCHECK(!document.documentElement()); |
| document.appendChild(root); |
| |
| // TODO(tkent): Should we check and move Text node children of <html>? |
| } |
| |
| DEFINE_TRACE(Editor) { |
| visitor->trace(m_frame); |
| visitor->trace(m_lastEditCommand); |
| visitor->trace(m_undoStack); |
| visitor->trace(m_mark); |
| } |
| |
| } // namespace blink |
