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/*
* 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/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/text/CharacterNames.h"
namespace blink {
using namespace HTMLNames;
using namespace WTF;
using namespace Unicode;
Editor::RevealSelectionScope::RevealSelectionScope(Editor* editor)
: m_editor(editor)
{
++m_editor->m_preventRevealSelection;
}
Editor::RevealSelectionScope::~RevealSelectionScope()
{
ASSERT(m_editor->m_preventRevealSelection);
--m_editor->m_preventRevealSelection;
if (!m_editor->m_preventRevealSelection)
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)
{
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 (RefPtrWillBeRawPtr<Range> range = textFromControlOfTarget->selection())
return VisibleSelection(EphemeralRange(range.get()), 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();
}
UndoStack* Editor::undoStack() const
{
if (Page* page = frame().page())
return &page->undoStack();
return 0;
}
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;
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::canDeleteRange(const EphemeralRange& range) const
{
Node* startContainer = range.startPosition().computeContainerNode();
Node* endContainer = range.endPosition().computeContainerNode();
if (!startContainer || !endContainer)
return false;
if (!startContainer->hasEditableStyle() || !endContainer->hasEditableStyle())
return false;
if (range.isCollapsed()) {
VisiblePosition start = createVisiblePosition(range.startPosition());
VisiblePosition previous = previousPositionOf(start);
// FIXME: We sometimes allow deletions at the start of editable roots, like when the caret is in an empty list item.
if (previous.isNull() || previous.deepEquivalent().anchorNode()->rootEditableElement() != startContainer->rootEditableElement())
return false;
}
return true;
}
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(SelectionDirection direction, TextGranularity granularity, bool killRing, bool isTypingAction)
{
if (!canEdit())
return false;
if (frame().selection().isRange()) {
if (isTypingAction) {
ASSERT(frame().document());
TypingCommand::deleteKeyPressed(*frame().document(), canSmartCopyOrDelete() ? TypingCommand::SmartDelete : 0, granularity);
revealSelectionAfterEditingOperation();
} else {
if (killRing)
addToKillRing(selectedRange());
deleteSelectionWithSmartDelete(canSmartCopyOrDelete());
// Implicitly calls revealSelectionAfterEditingOperation().
}
} else {
TypingCommand::Options options = 0;
if (canSmartCopyOrDelete())
options |= TypingCommand::SmartDelete;
if (killRing)
options |= TypingCommand::KillRing;
switch (direction) {
case DirectionForward:
case DirectionRight:
ASSERT(frame().document());
TypingCommand::forwardDeleteKeyPressed(*frame().document(), options, granularity);
break;
case DirectionBackward:
case DirectionLeft:
ASSERT(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(bool smartDelete)
{
if (frame().selection().isNone())
return;
ASSERT(frame().document());
DeleteSelectionCommand::create(*frame().document(), smartDelete)->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(PassRefPtrWillBeRawPtr<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)
{
RefPtrWillBeRawPtr<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()) {
ASSERT(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)
{
node.document().updateLayoutIgnorePendingStylesheets();
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->image();
}
return nullptr;
}
static void writeImageNodeToPasteboard(Pasteboard* pasteboard, Node* node, const String& title)
{
ASSERT(pasteboard);
ASSERT(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));
RefPtrWillBeRawPtr<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(PassRefPtrWillBeRawPtr<DocumentFragment> fragment, bool selectReplacement, bool smartReplace, bool matchStyle)
{
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;
ASSERT(frame().document());
ReplaceSelectionCommand::create(*frame().document(), fragment, options, EditActionPaste)->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(PassRefPtrWillBeRawPtr<DocumentFragment> fragment, bool smartReplace, bool plainText)
{
ReplaceSelectionCommand::CommandOptions options = ReplaceSelectionCommand::SelectReplacement | ReplaceSelectionCommand::PreventNesting;
if (smartReplace)
options |= ReplaceSelectionCommand::SmartReplace;
if (plainText)
options |= ReplaceSelectionCommand::MatchStyle;
ASSERT(frame().document());
ReplaceSelectionCommand::create(*frame().document(), fragment, options, EditActionDrag)->apply();
}
void Editor::moveSelectionAfterDragging(PassRefPtrWillBeRawPtr<DocumentFragment> fragment, const Position& pos, bool smartInsert, bool smartDelete)
{
MoveSelectionCommand::create(fragment, pos, smartInsert, smartDelete)->apply();
}
EphemeralRange Editor::selectedRange()
{
return frame().selection().selection().toNormalizedEphemeralRange();
}
bool Editor::shouldDeleteRange(const EphemeralRange& range) const
{
if (range.isCollapsed())
return false;
return canDeleteRange(range);
}
void Editor::notifyComponentsOnChangedSelection(const VisibleSelection& oldSelection, FrameSelection::SetSelectionOptions options)
{
client().respondToChangedSelection(m_frame, frame().selection().selectionType());
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()
{
ASSERT(frame().document());
RemoveFormatCommand::create(*frame().document())->apply();
}
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, EditAction editingAction)
{
switch (frame().selection().selectionType()) {
case NoSelection:
// do nothing
break;
case CaretSelection:
computeAndSetTypingStyle(style, editingAction);
break;
case RangeSelection:
if (style) {
ASSERT(frame().document());
ApplyStyleCommand::create(*frame().document(), EditingStyle::create(style).get(), editingAction)->apply();
}
break;
}
}
void Editor::applyParagraphStyle(StylePropertySet* style, EditAction editingAction)
{
if (frame().selection().isNone() || !style)
return;
ASSERT(frame().document());
ApplyStyleCommand::create(*frame().document(), EditingStyle::create(style).get(), editingAction, ApplyStyleCommand::ForceBlockProperties)->apply();
}
void Editor::applyStyleToSelection(StylePropertySet* style, EditAction editingAction)
{
if (!style || style->isEmpty() || !canEditRichly())
return;
applyStyle(style, editingAction);
}
void Editor::applyParagraphStyleToSelection(StylePropertySet* style, EditAction editingAction)
{
if (!style || style->isEmpty() || !canEditRichly())
return;
applyParagraphStyle(style, editingAction);
}
bool Editor::selectionStartHasStyle(CSSPropertyID propertyID, const String& value) const
{
return EditingStyle::create(propertyID, value)->triStateOfStyle(
EditingStyle::styleAtSelectionStart(frame().selection().selection(), propertyID == CSSPropertyBackgroundColor).get());
}
TriState Editor::selectionHasStyle(CSSPropertyID propertyID, const String& value) const
{
return EditingStyle::create(propertyID, value)->triStateOfStyle(frame().selection().selection());
}
String Editor::selectionStartCSSPropertyValue(CSSPropertyID propertyID)
{
RefPtrWillBeRawPtr<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(PassRefPtrWillBeRawPtr<Element> startRoot, PassRefPtrWillBeRawPtr<Element> endRoot)
{
if (startRoot)
startRoot->dispatchEvent(Event::create(EventTypeNames::webkitEditableContentChanged));
if (endRoot && endRoot != startRoot)
endRoot->dispatchEvent(Event::create(EventTypeNames::webkitEditableContentChanged));
}
void Editor::requestSpellcheckingAfterApplyingCommand(CompositeEditCommand* cmd)
{
// Note: Request spell checking for and only for |ReplaceSelectionCommand|s
// created in |Editor::replaceSelectionWithFragment()|.
// TODO(xiaochengh): May also need to do this after dragging crbug.com/298046.
if (cmd->editingAction() != EditActionPaste)
return;
if (frame().selection().isInPasswordField() || !spellChecker().isContinuousSpellCheckingEnabled())
return;
ASSERT(cmd->isReplaceSelectionCommand());
const EphemeralRange& insertedRange = toReplaceSelectionCommand(cmd)->insertedRange();
if (insertedRange.isNull())
return;
spellChecker().chunkAndMarkAllMisspellingsAndBadGrammar(cmd->endingSelection().rootEditableElement(), insertedRange);
}
void Editor::appliedEditing(PassRefPtrWillBeRawPtr<CompositeEditCommand> cmd)
{
EventQueueScope scope;
frame().document()->updateLayout();
// Request spell checking after pasting before any further DOM change.
requestSpellcheckingAfterApplyingCommand(cmd.get());
EditCommandComposition* composition = cmd->composition();
ASSERT(composition);
dispatchEditableContentChangedEvents(composition->startingRootEditableElement(), composition->endingRootEditableElement());
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) {
ASSERT(cmd->isTypingCommand());
} else {
// Only register a new undo command if the command passed in is
// different from the last command
m_lastEditCommand = cmd;
if (UndoStack* undoStack = this->undoStack())
undoStack->registerUndoStep(m_lastEditCommand->ensureComposition());
}
respondToChangedContents(newSelection);
}
void Editor::unappliedEditing(PassRefPtrWillBeRawPtr<EditCommandComposition> cmd)
{
EventQueueScope scope;
frame().document()->updateLayout();
dispatchEditableContentChangedEvents(cmd->startingRootEditableElement(), cmd->endingRootEditableElement());
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;
if (UndoStack* undoStack = this->undoStack())
undoStack->registerRedoStep(cmd);
respondToChangedContents(newSelection);
}
void Editor::reappliedEditing(PassRefPtrWillBeRawPtr<EditCommandComposition> cmd)
{
EventQueueScope scope;
frame().document()->updateLayout();
dispatchEditableContentChangedEvents(cmd->startingRootEditableElement(), cmd->endingRootEditableElement());
VisibleSelection newSelection(cmd->endingSelection());
changeSelectionAfterCommand(newSelection, FrameSelection::CloseTyping | FrameSelection::ClearTypingStyle);
m_lastEditCommand = nullptr;
if (UndoStack* undoStack = this->undoStack())
undoStack->registerUndoStep(cmd);
respondToChangedContents(newSelection);
}
PassOwnPtrWillBeRawPtr<Editor> Editor::create(LocalFrame& frame)
{
return adoptPtrWillBeNoop(new Editor(frame));
}
Editor::Editor(LocalFrame& frame)
: m_frame(&frame)
, 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(adoptPtr(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;
}
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;
VisibleSelection selection = selectionForCommand(triggeringEvent);
if (!selection.isContentEditable())
return false;
spellChecker().updateMarkersForWordsAffectedByEditing(isSpaceOrNewline(text[0]));
// Get the selection to use for the event that triggered this insertText.
// If the event handler changed the selection, we may want to use a different selection
// that is contained in the event target.
selection = selectionForCommand(triggeringEvent);
if (selection.isContentEditable()) {
if (Node* selectionStart = selection.start().anchorNode()) {
RefPtrWillBeRawPtr<Document> document(selectionStart->document());
// Insert the text
TypingCommand::Options options = 0;
if (selectInsertedText)
options |= TypingCommand::SelectInsertedText;
TypingCommand::insertText(*document.get(), text, selection, options, triggeringEvent && triggeringEvent->isComposition() ? TypingCommand::TextCompositionConfirm : TypingCommand::TextCompositionNone);
// Reveal the current selection
if (LocalFrame* editedFrame = document->frame()) {
if (Page* page = editedFrame->page())
toLocalFrame(page->focusController().focusedOrMainFrame())->selection().revealSelection(ScrollAlignment::alignCenterIfNeeded);
}
}
}
return true;
}
bool Editor::insertLineBreak()
{
if (!canEdit())
return false;
VisiblePosition caret = frame().selection().selection().visibleStart();
bool alignToEdge = isEndOfEditableOrNonEditableContent(caret);
ASSERT(frame().document());
TypingCommand::insertLineBreak(*frame().document(), 0);
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);
ASSERT(frame().document());
TypingCommand::insertParagraphSeparator(*frame().document(), 0);
revealSelectionAfterEditingOperation(alignToEdge ? ScrollAlignment::alignToEdgeIfNeeded : ScrollAlignment::alignCenterIfNeeded);
return true;
}
void Editor::cut()
{
if (tryDHTMLCut())
return; // DHTML did the whole operation
if (!canCut())
return;
// TODO(yosin) We should use early return style here.
if (shouldDeleteRange(selectedRange())) {
spellChecker().updateMarkersForWordsAffectedByEditing(true);
if (enclosingTextFormControl(frame().selection().start())) {
String plainText = frame().selectedTextForClipboard();
Pasteboard::generalPasteboard()->writePlainText(plainText,
canSmartCopyOrDelete() ? Pasteboard::CanSmartReplace : Pasteboard::CannotSmartReplace);
} else {
writeSelectionToPasteboard();
}
deleteSelectionWithSmartDelete(canSmartCopyOrDelete());
}
}
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()
{
ASSERT(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);
if (frame().selection().isContentRichlyEditable())
pasteWithPasteboard(Pasteboard::generalPasteboard());
else
pasteAsPlainTextWithPasteboard(Pasteboard::generalPasteboard());
}
void Editor::pasteAsPlainText()
{
if (tryDHTMLPaste(PlainTextOnly))
return;
if (!canPaste())
return;
spellChecker().updateMarkersForWordsAffectedByEditing(false);
pasteAsPlainTextWithPasteboard(Pasteboard::generalPasteboard());
}
void Editor::performDelete()
{
if (!canDelete())
return;
addToKillRing(selectedRange());
deleteSelectionWithSmartDelete(canSmartCopyOrDelete());
// 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()
{
if (UndoStack* undoStack = this->undoStack())
return undoStack->canUndo();
return false;
}
void Editor::undo()
{
if (UndoStack* undoStack = this->undoStack())
undoStack->undo();
}
bool Editor::canRedo()
{
if (UndoStack* undoStack = this->undoStack())
return undoStack->canRedo();
return false;
}
void Editor::redo()
{
if (UndoStack* undoStack = this->undoStack())
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()->updateLayoutTreeIfNeeded();
return;
}
RefPtrWillBeRawPtr<MutableStylePropertySet> style = MutableStylePropertySet::create(HTMLQuirksMode);
style->setProperty(CSSPropertyDirection, direction == LeftToRightWritingDirection ? "ltr" : direction == RightToLeftWritingDirection ? "rtl" : "inherit", false);
applyParagraphStyleToSelection(style.get(), EditActionSetWritingDirection);
}
void Editor::revealSelectionAfterEditingOperation(const ScrollAlignment& alignment, RevealExtentOption revealExtentOption)
{
if (m_preventRevealSelection)
return;
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(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 (!equalSelectionsInDOMTree(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();
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 = equalSelectionsInDOMTree(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().selectionType());
}
IntRect Editor::firstRectForRange(const EphemeralRange& range) const
{
LayoutUnit extraWidthToEndOfLine;
ASSERT(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,
startCaretRect.height());
}
IntRect Editor::firstRectForRange(const Range* range) const
{
ASSERT(range);
return firstRectForRange(EphemeralRange(range));
}
void Editor::computeAndSetTypingStyle(StylePropertySet* style, EditAction editingAction)
{
if (!style || style->isEmpty()) {
frame().selection().clearTypingStyle();
return;
}
// Calculate the current typing style.
RefPtrWillBeRawPtr<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.
RefPtrWillBeRawPtr<EditingStyle> blockStyle = typingStyle->extractAndRemoveBlockProperties();
if (!blockStyle->isEmpty()) {
ASSERT(frame().document());
ApplyStyleCommand::create(*frame().document(), blockStyle.get(), editingAction)->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.
RefPtrWillBeRawPtr<Range> resultRange = findRangeOfString(target, EphemeralRange(selection.start(), selection.end()), static_cast<FindOptions>(options | FindAPICall));
if (!resultRange)
return false;
frame().selection().setSelection(VisibleSelection(EphemeralRange(resultRange.get())));
frame().selection().revealSelection();
return true;
}
template <typename Strategy>
static PassRefPtrWillBeRawPtr<Range> findStringAndScrollToVisibleAlgorithm(Editor& editor, const String& target, const EphemeralRangeTemplate<Strategy>& previousMatch, FindOptions options)
{
RefPtrWillBeRawPtr<Range> nextMatch = editor.findRangeOfString(target, previousMatch, options);
if (!nextMatch)
return nullptr;
nextMatch->firstNode()->layoutObject()->scrollRectToVisible(LayoutRect(nextMatch->boundingBox()),
ScrollAlignment::alignCenterIfNeeded, ScrollAlignment::alignCenterIfNeeded, UserScroll);
return nextMatch.release();
}
PassRefPtrWillBeRawPtr<Range> Editor::findStringAndScrollToVisible(const String& target, Range* range, FindOptions options)
{
if (RuntimeEnabledFeatures::selectionForFlatTreeEnabled())
return findStringAndScrollToVisibleAlgorithm<EditingInFlatTreeStrategy>(*this, target, EphemeralRangeInFlatTree(range), options);
return findStringAndScrollToVisibleAlgorithm<EditingStrategy>(*this, target, EphemeralRange(range), options);
}
// 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 PassRefPtrWillBeRawPtr<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;
RefPtrWillBeRawPtr<Range> rangeObject = Range::create(resultRange.document(), toPositionInDOMTree(resultRange.startPosition()), toPositionInDOMTree(resultRange.endPosition()));
if (!rangeObject->collapsed())
return rangeObject.release();
// 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) {
// TODO(yosin) We should use |PositionMoveType::Character|
// for |nextPositionOf()|.
searchRange = EphemeralRangeTemplate<Strategy>(nextPositionOf(resultRange.startPosition(), PositionMoveType::CodePoint), searchRange.endPosition());
} else {
// TODO(yosin) We should use |PositionMoveType::Character|
// for |previousPositionOf()|.
searchRange = EphemeralRangeTemplate<Strategy>(searchRange.startPosition(), previousPositionOf(resultRange.endPosition(), PositionMoveType::CodePoint));
}
}
ASSERT_NOT_REACHED();
return nullptr;
}
template <typename Strategy>
static PassRefPtrWillBeRawPtr<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());
}
RefPtrWillBeRawPtr<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.get())) == 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.release();
}
PassRefPtrWillBeRawPtr<Range> Editor::findRangeOfString(const String& target, const EphemeralRange& reference, FindOptions options)
{
return findRangeOfStringAlgorithm<EditingStrategy>(*frame().document(), target, reference, options);
}
PassRefPtrWillBeRawPtr<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(oldSelection, options);
}
SpellChecker& Editor::spellChecker() const
{
return frame().spellChecker();
}
void Editor::toggleOverwriteModeEnabled()
{
m_overwriteModeEnabled = !m_overwriteModeEnabled;
frame().selection().setShouldShowBlockCursor(m_overwriteModeEnabled);
}
void Editor::tidyUpHTMLStructure(Document& document)
{
// hasEditableStyle() needs up-to-date ComputedStyle.
document.updateLayoutTreeIfNeeded();
bool needsValidStructure = document.hasEditableStyle() || (document.documentElement() && document.documentElement()->hasEditableStyle());
if (!needsValidStructure)
return;
RefPtrWillBeRawPtr<Element> existingHead = nullptr;
RefPtrWillBeRawPtr<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."));
RefPtrWillBeRawPtr<Element> root = HTMLHtmlElement::create(document);
if (existingHead)
root->appendChild(existingHead.release());
RefPtrWillBeRawPtr<Element> body = nullptr;
if (existingBody)
body = existingBody.release();
else
body = HTMLBodyElement::create(document);
if (document.documentElement())
body->appendChild(document.documentElement());
root->appendChild(body.release());
ASSERT(!document.documentElement());
document.appendChild(root.release());
// 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_mark);
}
} // namespace blink