1831 lines
81 KiB
C++
1831 lines
81 KiB
C++
/*
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* Copyright (C) 2005-2017 Apple Inc. All rights reserved.
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* Copyright (C) 2009, 2010, 2011 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "ReplaceSelectionCommand.h"
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#include "AXObjectCache.h"
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#include "ApplyStyleCommand.h"
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#include "BeforeTextInsertedEvent.h"
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#include "BreakBlockquoteCommand.h"
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#include "CSSComputedStyleDeclaration.h"
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#include "CSSStyleDeclaration.h"
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#include "DOMWrapperWorld.h"
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#include "DataTransfer.h"
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#include "Document.h"
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#include "DocumentFragment.h"
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#include "Editing.h"
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#include "EditingBehavior.h"
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#include "ElementIterator.h"
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#include "EventNames.h"
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#include "Frame.h"
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#include "FrameSelection.h"
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#include "HTMLBRElement.h"
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#include "HTMLBaseElement.h"
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#include "HTMLBodyElement.h"
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#include "HTMLInputElement.h"
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#include "HTMLLIElement.h"
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#include "HTMLLinkElement.h"
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#include "HTMLMetaElement.h"
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#include "HTMLNames.h"
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#include "HTMLStyleElement.h"
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#include "HTMLTitleElement.h"
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#include "NodeList.h"
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#include "NodeRenderStyle.h"
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#include "Position.h"
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#include "RenderInline.h"
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#include "RenderText.h"
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#include "ScriptDisallowedScope.h"
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#include "ScriptElement.h"
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#include "SimplifyMarkupCommand.h"
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#include "SmartReplace.h"
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#include "StyleProperties.h"
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#include "Text.h"
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#include "TextIterator.h"
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#include "VisibleUnits.h"
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#include "markup.h"
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#include <wtf/NeverDestroyed.h>
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#include <wtf/RobinHoodHashSet.h>
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#include <wtf/StdLibExtras.h>
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namespace WebCore {
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using namespace HTMLNames;
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enum EFragmentType { EmptyFragment, SingleTextNodeFragment, TreeFragment };
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// --- ReplacementFragment helper class
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class ReplacementFragment {
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WTF_MAKE_FAST_ALLOCATED;
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WTF_MAKE_NONCOPYABLE(ReplacementFragment);
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public:
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ReplacementFragment(DocumentFragment*, const VisibleSelection&);
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DocumentFragment* fragment() { return m_fragment.get(); }
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Node* firstChild() const;
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Node* lastChild() const;
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bool isEmpty() const;
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bool hasInterchangeNewlineAtStart() const { return m_hasInterchangeNewlineAtStart; }
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bool hasInterchangeNewlineAtEnd() const { return m_hasInterchangeNewlineAtEnd; }
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void removeNode(Node&);
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void removeNodePreservingChildren(Node&);
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private:
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void removeContentsWithSideEffects();
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Ref<HTMLElement> insertFragmentForTestRendering(Node* rootEditableNode);
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void removeUnrenderedNodes(Node*);
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void restoreAndRemoveTestRenderingNodesToFragment(StyledElement*);
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void removeInterchangeNodes(Node*);
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void insertNodeBefore(Node&, Node& refNode);
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RefPtr<DocumentFragment> m_fragment;
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bool m_hasInterchangeNewlineAtStart;
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bool m_hasInterchangeNewlineAtEnd;
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};
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static bool isInterchangeNewlineNode(const Node* node)
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{
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static NeverDestroyed<String> interchangeNewlineClassString(AppleInterchangeNewline);
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return is<HTMLBRElement>(node) && downcast<HTMLBRElement>(*node).attributeWithoutSynchronization(classAttr) == interchangeNewlineClassString;
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}
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static bool isInterchangeConvertedSpaceSpan(const Node* node)
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{
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static NeverDestroyed<String> convertedSpaceSpanClassString(AppleConvertedSpace);
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return is<HTMLElement>(node) && downcast<HTMLElement>(*node).attributeWithoutSynchronization(classAttr) == convertedSpaceSpanClassString;
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}
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static Position positionAvoidingPrecedingNodes(Position position)
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{
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ASSERT(position.isNotNull());
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// If we're already on a break, it's probably a placeholder and we shouldn't change our position.
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if (editingIgnoresContent(*position.deprecatedNode()))
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return position;
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// We also stop when changing block flow elements because even though the visual position is the
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// same. E.g.,
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// <div>foo^</div>^
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// The two positions above are the same visual position, but we want to stay in the same block.
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auto enclosingBlockNode = makeRefPtr(enclosingBlock(position.containerNode()));
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for (Position nextPosition = position; nextPosition.containerNode() != enclosingBlockNode; position = nextPosition) {
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if (lineBreakExistsAtPosition(position))
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break;
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if (position.containerNode()->nonShadowBoundaryParentNode())
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nextPosition = positionInParentAfterNode(position.containerNode());
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if (nextPosition == position)
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break;
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if (enclosingBlock(nextPosition.containerNode()) != enclosingBlockNode)
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break;
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if (VisiblePosition(position) != VisiblePosition(nextPosition))
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break;
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}
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return position;
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}
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ReplacementFragment::ReplacementFragment(DocumentFragment* fragment, const VisibleSelection& selection)
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: m_fragment(fragment)
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, m_hasInterchangeNewlineAtStart(false)
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, m_hasInterchangeNewlineAtEnd(false)
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{
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if (!m_fragment)
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return;
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if (!m_fragment->firstChild())
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return;
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removeContentsWithSideEffects();
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RefPtr<Element> editableRoot = selection.rootEditableElement();
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ASSERT(editableRoot);
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if (!editableRoot)
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return;
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auto shadowHost = makeRefPtr(editableRoot->shadowHost());
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if (!editableRoot->attributeEventListener(eventNames().webkitBeforeTextInsertedEvent, mainThreadNormalWorld())
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&& !(shadowHost && shadowHost->renderer() && shadowHost->renderer()->isTextControl())
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&& editableRoot->hasRichlyEditableStyle()) {
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removeInterchangeNodes(m_fragment.get());
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return;
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}
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auto page = createPageForSanitizingWebContent();
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auto stagingDocument = makeRefPtr(page->mainFrame().document());
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ASSERT(stagingDocument->body());
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ComputedStyleExtractor computedStyleOfEditableRoot(editableRoot.get());
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stagingDocument->body()->setAttributeWithoutSynchronization(styleAttr, computedStyleOfEditableRoot.copyProperties()->asText());
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RefPtr<StyledElement> holder = insertFragmentForTestRendering(stagingDocument->body());
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if (!holder) {
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removeInterchangeNodes(m_fragment.get());
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return;
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}
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auto range = VisibleSelection::selectionFromContentsOfNode(holder.get()).toNormalizedRange();
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String text = range ? plainText(*range, { TextIteratorBehavior::EmitsOriginalText, TextIteratorBehavior::IgnoresStyleVisibility }) : emptyString();
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removeInterchangeNodes(holder.get());
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removeUnrenderedNodes(holder.get());
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restoreAndRemoveTestRenderingNodesToFragment(holder.get());
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// Give the root a chance to change the text.
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auto event = BeforeTextInsertedEvent::create(text);
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editableRoot->dispatchEvent(event);
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if (text != event->text() || !editableRoot->hasRichlyEditableStyle()) {
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restoreAndRemoveTestRenderingNodesToFragment(holder.get());
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auto range = selection.toNormalizedRange();
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if (!range)
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return;
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m_fragment = createFragmentFromText(*range, event->text());
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if (!m_fragment->firstChild())
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return;
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holder = insertFragmentForTestRendering(stagingDocument->body());
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removeInterchangeNodes(holder.get());
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removeUnrenderedNodes(holder.get());
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restoreAndRemoveTestRenderingNodesToFragment(holder.get());
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}
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}
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void ReplacementFragment::removeContentsWithSideEffects()
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{
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Vector<Ref<Element>> elementsToRemove;
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Vector<std::pair<Ref<Element>, QualifiedName>> attributesToRemove;
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auto it = descendantsOfType<Element>(*m_fragment).begin();
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auto end = descendantsOfType<Element>(*m_fragment).end();
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while (it != end) {
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auto element = makeRef(*it);
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if (isScriptElement(element) || (is<HTMLStyleElement>(element) && element->getAttribute(classAttr) != WebKitMSOListQuirksStyle)
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|| is<HTMLBaseElement>(element) || is<HTMLLinkElement>(element) || is<HTMLMetaElement>(element) || is<HTMLTitleElement>(element)) {
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elementsToRemove.append(WTFMove(element));
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it.traverseNextSkippingChildren();
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continue;
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}
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if (element->hasAttributes()) {
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for (auto& attribute : element->attributesIterator()) {
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if (element->isEventHandlerAttribute(attribute) || element->isJavaScriptURLAttribute(attribute))
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attributesToRemove.append({ element.copyRef(), attribute.name() });
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}
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}
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++it;
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}
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for (auto& element : elementsToRemove)
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removeNode(WTFMove(element));
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for (auto& item : attributesToRemove)
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item.first->removeAttribute(item.second);
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}
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bool ReplacementFragment::isEmpty() const
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{
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return (!m_fragment || !m_fragment->firstChild()) && !m_hasInterchangeNewlineAtStart && !m_hasInterchangeNewlineAtEnd;
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}
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Node *ReplacementFragment::firstChild() const
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{
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return m_fragment ? m_fragment->firstChild() : 0;
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}
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Node *ReplacementFragment::lastChild() const
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{
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return m_fragment ? m_fragment->lastChild() : 0;
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}
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void ReplacementFragment::removeNodePreservingChildren(Node& node)
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{
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Ref<Node> protectedNode = node;
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while (RefPtr<Node> n = node.firstChild()) {
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removeNode(*n);
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insertNodeBefore(*n, node);
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}
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removeNode(node);
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}
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void ReplacementFragment::removeNode(Node& node)
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{
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ContainerNode* parent = node.nonShadowBoundaryParentNode();
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if (!parent)
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return;
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parent->removeChild(node);
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}
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void ReplacementFragment::insertNodeBefore(Node& node, Node& refNode)
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{
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ContainerNode* parent = refNode.nonShadowBoundaryParentNode();
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if (!parent)
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return;
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parent->insertBefore(node, &refNode);
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}
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Ref<HTMLElement> ReplacementFragment::insertFragmentForTestRendering(Node* rootNode)
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{
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auto document = makeRef(rootNode->document());
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auto holder = createDefaultParagraphElement(document.get());
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holder->appendChild(*m_fragment);
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rootNode->appendChild(holder);
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document->updateLayoutIgnorePendingStylesheets();
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return holder;
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}
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void ReplacementFragment::restoreAndRemoveTestRenderingNodesToFragment(StyledElement* holder)
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{
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if (!holder)
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return;
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while (RefPtr<Node> node = holder->firstChild()) {
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holder->removeChild(*node);
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m_fragment->appendChild(*node);
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}
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removeNode(*holder);
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}
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void ReplacementFragment::removeUnrenderedNodes(Node* holder)
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{
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Vector<Ref<Node>> unrendered;
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for (auto node = makeRefPtr(holder->firstChild()); node; node = NodeTraversal::next(*node, holder)) {
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if (!isNodeRendered(*node) && !isTableStructureNode(node.get()))
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unrendered.append(*node);
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}
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for (auto& node : unrendered)
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removeNode(node);
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}
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void ReplacementFragment::removeInterchangeNodes(Node* container)
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{
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m_hasInterchangeNewlineAtStart = false;
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m_hasInterchangeNewlineAtEnd = false;
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// Interchange newlines at the "start" of the incoming fragment must be
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// either the first node in the fragment or the first leaf in the fragment.
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auto node = makeRefPtr(container->firstChild());
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while (node) {
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if (isInterchangeNewlineNode(node.get())) {
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m_hasInterchangeNewlineAtStart = true;
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removeNode(*node);
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break;
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}
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node = node->firstChild();
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}
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if (!container->hasChildNodes())
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return;
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// Interchange newlines at the "end" of the incoming fragment must be
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// either the last node in the fragment or the last leaf in the fragment.
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node = container->lastChild();
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while (node) {
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if (isInterchangeNewlineNode(node.get())) {
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m_hasInterchangeNewlineAtEnd = true;
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removeNode(*node);
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break;
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}
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node = node->lastChild();
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}
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node = container->firstChild();
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while (node) {
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RefPtr<Node> next = NodeTraversal::next(*node);
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if (isInterchangeConvertedSpaceSpan(node.get())) {
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next = NodeTraversal::nextSkippingChildren(*node);
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removeNodePreservingChildren(*node);
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}
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node = WTFMove(next);
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}
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}
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inline void ReplaceSelectionCommand::InsertedNodes::respondToNodeInsertion(Node* node)
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{
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if (!node)
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return;
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if (!m_firstNodeInserted)
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m_firstNodeInserted = node;
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m_lastNodeInserted = node;
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}
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inline void ReplaceSelectionCommand::InsertedNodes::willRemoveNodePreservingChildren(Node* node)
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{
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if (m_firstNodeInserted == node)
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m_firstNodeInserted = NodeTraversal::next(*node);
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if (m_lastNodeInserted == node) {
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m_lastNodeInserted = node->lastChild() ? node->lastChild() : NodeTraversal::nextSkippingChildren(*node);
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if (!m_lastNodeInserted && m_firstNodeInserted) {
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// If the last inserted node is at the end of the document and doesn't have any children, look backwards for the
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// previous node as the last inserted node, clamping to the first inserted node if needed to ensure that the
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// document position of the last inserted node is not behind the first inserted node.
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auto* previousNode = NodeTraversal::previousSkippingChildren(*node);
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ASSERT(previousNode);
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m_lastNodeInserted = m_firstNodeInserted->compareDocumentPosition(*previousNode) & Node::DOCUMENT_POSITION_FOLLOWING ? previousNode : m_firstNodeInserted;
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}
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}
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}
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inline void ReplaceSelectionCommand::InsertedNodes::willRemovePossibleAncestorNode(Node* node)
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{
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bool containsFirstNode = node->contains(m_firstNodeInserted.get());
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bool containsLastNode = node->contains(m_lastNodeInserted.get());
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if (containsFirstNode && containsLastNode) {
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m_firstNodeInserted = nullptr;
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m_lastNodeInserted = nullptr;
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return;
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}
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if (containsLastNode)
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m_lastNodeInserted = NodeTraversal::previousSkippingChildren(*node);
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else if (containsFirstNode)
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m_firstNodeInserted = NodeTraversal::nextSkippingChildren(*node);
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if (!m_lastNodeInserted)
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m_lastNodeInserted = m_firstNodeInserted;
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else if (!m_firstNodeInserted)
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m_firstNodeInserted = m_lastNodeInserted;
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else if (m_firstNodeInserted->isDescendantOf(m_lastNodeInserted.get()))
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std::swap(m_firstNodeInserted, m_lastNodeInserted);
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}
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inline void ReplaceSelectionCommand::InsertedNodes::willRemoveNode(Node* node)
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{
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ASSERT(!m_firstNodeInserted || !m_firstNodeInserted->isDescendantOf(node));
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ASSERT(!m_lastNodeInserted || !m_lastNodeInserted->isDescendantOf(node));
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if (m_firstNodeInserted == node && m_lastNodeInserted == node) {
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m_firstNodeInserted = nullptr;
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m_lastNodeInserted = nullptr;
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} else if (m_firstNodeInserted == node)
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m_firstNodeInserted = NodeTraversal::nextSkippingChildren(*m_firstNodeInserted);
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else if (m_lastNodeInserted == node)
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m_lastNodeInserted = NodeTraversal::previousSkippingChildren(*m_lastNodeInserted);
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}
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inline void ReplaceSelectionCommand::InsertedNodes::didReplaceNode(Node* node, Node* newNode)
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{
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if (m_firstNodeInserted == node)
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m_firstNodeInserted = newNode;
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if (m_lastNodeInserted == node)
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m_lastNodeInserted = newNode;
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}
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ReplaceSelectionCommand::ReplaceSelectionCommand(Document& document, RefPtr<DocumentFragment>&& fragment, OptionSet<CommandOption> options, EditAction editAction)
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: CompositeEditCommand(document, editAction)
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, m_selectReplacement(options & SelectReplacement)
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, m_smartReplace(options & SmartReplace)
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, m_matchStyle(options & MatchStyle)
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, m_documentFragment(fragment)
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, m_preventNesting(options & PreventNesting)
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, m_movingParagraph(options & MovingParagraph)
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, m_sanitizeFragment(options & SanitizeFragment)
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, m_shouldMergeEnd(false)
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, m_ignoreMailBlockquote(options & IgnoreMailBlockquote)
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{
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}
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static bool hasMatchingQuoteLevel(VisiblePosition endOfExistingContent, VisiblePosition endOfInsertedContent)
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{
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Position existing = endOfExistingContent.deepEquivalent();
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Position inserted = endOfInsertedContent.deepEquivalent();
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bool isInsideMailBlockquote = enclosingNodeOfType(inserted, isMailBlockquote, CanCrossEditingBoundary);
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return isInsideMailBlockquote && (numEnclosingMailBlockquotes(existing) == numEnclosingMailBlockquotes(inserted));
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}
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bool ReplaceSelectionCommand::shouldMergeStart(bool selectionStartWasStartOfParagraph, bool fragmentHasInterchangeNewlineAtStart, bool selectionStartWasInsideMailBlockquote)
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{
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if (m_movingParagraph)
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return false;
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VisiblePosition startOfInsertedContent(positionAtStartOfInsertedContent());
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VisiblePosition prev = startOfInsertedContent.previous(CannotCrossEditingBoundary);
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if (prev.isNull())
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return false;
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// When we have matching quote levels, its ok to merge more frequently.
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// For a successful merge, we still need to make sure that the inserted content starts with the beginning of a paragraph.
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// And we should only merge here if the selection start was inside a mail blockquote. This prevents against removing a
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// blockquote from newly pasted quoted content that was pasted into an unquoted position. If that unquoted position happens
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// to be right after another blockquote, we don't want to merge and risk stripping a valid block (and newline) from the pasted content.
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if (isStartOfParagraph(startOfInsertedContent) && selectionStartWasInsideMailBlockquote && hasMatchingQuoteLevel(prev, positionAtEndOfInsertedContent()))
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return true;
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return !selectionStartWasStartOfParagraph
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&& !fragmentHasInterchangeNewlineAtStart
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&& isStartOfParagraph(startOfInsertedContent)
|
|
&& !startOfInsertedContent.deepEquivalent().deprecatedNode()->hasTagName(brTag)
|
|
&& shouldMerge(startOfInsertedContent, prev);
|
|
}
|
|
|
|
bool ReplaceSelectionCommand::shouldMergeEnd(bool selectionEndWasEndOfParagraph)
|
|
{
|
|
VisiblePosition endOfInsertedContent(positionAtEndOfInsertedContent());
|
|
VisiblePosition next = endOfInsertedContent.next(CannotCrossEditingBoundary);
|
|
if (next.isNull())
|
|
return false;
|
|
|
|
return !selectionEndWasEndOfParagraph
|
|
&& isEndOfParagraph(endOfInsertedContent)
|
|
&& !endOfInsertedContent.deepEquivalent().deprecatedNode()->hasTagName(brTag)
|
|
&& shouldMerge(endOfInsertedContent, next);
|
|
}
|
|
|
|
static bool isMailPasteAsQuotationNode(const Node* node)
|
|
{
|
|
return node && node->hasTagName(blockquoteTag) && downcast<Element>(node)->attributeWithoutSynchronization(classAttr) == ApplePasteAsQuotation;
|
|
}
|
|
|
|
static bool isHeaderElement(const Node* a)
|
|
{
|
|
if (!a)
|
|
return false;
|
|
|
|
return a->hasTagName(h1Tag)
|
|
|| a->hasTagName(h2Tag)
|
|
|| a->hasTagName(h3Tag)
|
|
|| a->hasTagName(h4Tag)
|
|
|| a->hasTagName(h5Tag)
|
|
|| a->hasTagName(h6Tag);
|
|
}
|
|
|
|
static bool haveSameTagName(Node* a, Node* b)
|
|
{
|
|
return is<Element>(a) && is<Element>(b) && downcast<Element>(*a).tagName() == downcast<Element>(*b).tagName();
|
|
}
|
|
|
|
bool ReplaceSelectionCommand::shouldMerge(const VisiblePosition& source, const VisiblePosition& destination)
|
|
{
|
|
if (source.isNull() || destination.isNull())
|
|
return false;
|
|
|
|
auto sourceNode = makeRefPtr(source.deepEquivalent().deprecatedNode());
|
|
auto destinationNode = makeRefPtr(destination.deepEquivalent().deprecatedNode());
|
|
auto sourceBlock = makeRefPtr(enclosingBlock(sourceNode.get()));
|
|
auto destinationBlock = makeRefPtr(enclosingBlock(destinationNode.get()));
|
|
return !enclosingNodeOfType(source.deepEquivalent(), &isMailPasteAsQuotationNode)
|
|
&& sourceBlock
|
|
&& (!sourceBlock->hasTagName(blockquoteTag) || isMailBlockquote(sourceBlock.get()))
|
|
&& enclosingListChild(sourceBlock.get()) == enclosingListChild(destinationNode.get())
|
|
&& enclosingTableCell(source.deepEquivalent()) == enclosingTableCell(destination.deepEquivalent())
|
|
&& (!isHeaderElement(sourceBlock.get()) || haveSameTagName(sourceBlock.get(), destinationBlock.get()))
|
|
// Don't merge to or from a position before or after a block because it would
|
|
// be a no-op and cause infinite recursion.
|
|
&& !isBlock(sourceNode.get()) && !isBlock(destinationNode.get());
|
|
}
|
|
|
|
static bool fragmentNeedsColorTransformed(ReplacementFragment& fragment, const Position& insertionPos)
|
|
{
|
|
// Dark mode content that is inserted should have the inline styles inverse color
|
|
// transformed by the color filter to match the color filtered document contents.
|
|
// This applies to Mail and Notes when pasting from Xcode. <rdar://problem/40529867>
|
|
|
|
RefPtr<Element> editableRoot = insertionPos.rootEditableElement();
|
|
if (!editableRoot)
|
|
return false;
|
|
|
|
{
|
|
ScriptDisallowedScope::InMainThread scriptDisallowedScope;
|
|
|
|
auto* editableRootRenderer = editableRoot->renderer();
|
|
if (!editableRootRenderer || !editableRootRenderer->style().hasAppleColorFilter())
|
|
return false;
|
|
|
|
const auto& colorFilter = editableRootRenderer->style().appleColorFilter();
|
|
for (const auto& colorFilterOperation : colorFilter.operations()) {
|
|
if (colorFilterOperation->type() != FilterOperation::APPLE_INVERT_LIGHTNESS)
|
|
return false;
|
|
}
|
|
}
|
|
|
|
auto propertyLightness = [&](const StyleProperties& inlineStyle, CSSPropertyID propertyID) -> std::optional<double> {
|
|
auto color = inlineStyle.propertyAsColor(propertyID);
|
|
if (!color || !color.value().isVisible() || color.value().isSemantic())
|
|
return { };
|
|
|
|
return color.value().lightness();
|
|
};
|
|
|
|
const double lightnessDarkEnoughForText = 0.4;
|
|
const double lightnessLightEnoughForBackground = 0.6;
|
|
|
|
for (RefPtr<Node> node = fragment.firstChild(); node; node = NodeTraversal::next(*node)) {
|
|
if (!is<StyledElement>(*node))
|
|
continue;
|
|
|
|
auto& element = downcast<StyledElement>(*node);
|
|
auto* inlineStyle = element.inlineStyle();
|
|
if (!inlineStyle)
|
|
continue;
|
|
|
|
auto textLightness = propertyLightness(*inlineStyle, CSSPropertyColor);
|
|
if (textLightness && *textLightness < lightnessDarkEnoughForText)
|
|
return false;
|
|
|
|
auto backgroundLightness = propertyLightness(*inlineStyle, CSSPropertyBackgroundColor);
|
|
if (backgroundLightness && *backgroundLightness > lightnessLightEnoughForBackground)
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void ReplaceSelectionCommand::inverseTransformColor(InsertedNodes& insertedNodes)
|
|
{
|
|
RefPtr<Node> pastEndNode = insertedNodes.pastLastLeaf();
|
|
for (RefPtr<Node> node = insertedNodes.firstNodeInserted(); node && node != pastEndNode; node = NodeTraversal::next(*node)) {
|
|
if (!is<StyledElement>(*node))
|
|
continue;
|
|
|
|
auto& element = downcast<StyledElement>(*node);
|
|
auto* inlineStyle = element.inlineStyle();
|
|
if (!inlineStyle)
|
|
continue;
|
|
|
|
auto editingStyle = EditingStyle::create(inlineStyle);
|
|
auto transformedStyle = editingStyle->inverseTransformColorIfNeeded(element);
|
|
if (editingStyle.ptr() == transformedStyle.ptr())
|
|
continue;
|
|
|
|
setNodeAttribute(element, styleAttr, transformedStyle->style()->asText());
|
|
}
|
|
}
|
|
|
|
// Style rules that match just inserted elements could change their appearance, like
|
|
// a div inserted into a document with div { display:inline; }.
|
|
void ReplaceSelectionCommand::removeRedundantStylesAndKeepStyleSpanInline(InsertedNodes& insertedNodes)
|
|
{
|
|
RefPtr<Node> pastEndNode = insertedNodes.pastLastLeaf();
|
|
RefPtr<Node> next;
|
|
for (RefPtr<Node> node = insertedNodes.firstNodeInserted(); node && node != pastEndNode; node = next) {
|
|
// FIXME: <rdar://problem/5371536> Style rules that match pasted content can change it's appearance
|
|
|
|
next = NodeTraversal::next(*node);
|
|
if (!is<StyledElement>(*node))
|
|
continue;
|
|
|
|
StyledElement* element = downcast<StyledElement>(node.get());
|
|
|
|
auto inlineStyle = makeRefPtr(element->inlineStyle());
|
|
auto newInlineStyle = EditingStyle::create(inlineStyle.get());
|
|
if (inlineStyle) {
|
|
if (is<HTMLElement>(*element)) {
|
|
Vector<QualifiedName> attributes;
|
|
HTMLElement& htmlElement = downcast<HTMLElement>(*element);
|
|
|
|
if (newInlineStyle->conflictsWithImplicitStyleOfElement(htmlElement)) {
|
|
// e.g. <b style="font-weight: normal;"> is converted to <span style="font-weight: normal;">
|
|
node = replaceElementWithSpanPreservingChildrenAndAttributes(htmlElement);
|
|
element = downcast<StyledElement>(node.get());
|
|
insertedNodes.didReplaceNode(&htmlElement, node.get());
|
|
} else if (newInlineStyle->extractConflictingImplicitStyleOfAttributes(htmlElement, EditingStyle::PreserveWritingDirection, nullptr, attributes, EditingStyle::DoNotExtractMatchingStyle)) {
|
|
// e.g. <font size="3" style="font-size: 20px;"> is converted to <font style="font-size: 20px;">
|
|
for (auto& attribute : attributes)
|
|
removeNodeAttribute(*element, attribute);
|
|
}
|
|
}
|
|
|
|
auto context = makeRefPtr(element->parentNode());
|
|
|
|
// If Mail wraps the fragment with a Paste as Quotation blockquote, or if you're pasting into a quoted region,
|
|
// styles from blockquoteNode are allowed to override those from the source document, see <rdar://problem/4930986> and <rdar://problem/5089327>.
|
|
RefPtr<Node> blockquoteNode = isMailPasteAsQuotationNode(context.get()) ? context.get() : enclosingNodeOfType(firstPositionInNode(context.get()), isMailBlockquote, CanCrossEditingBoundary);
|
|
if (blockquoteNode)
|
|
newInlineStyle->removeStyleFromRulesAndContext(*element, document().documentElement());
|
|
|
|
newInlineStyle->removeStyleFromRulesAndContext(*element, context.get());
|
|
}
|
|
|
|
if (!inlineStyle || newInlineStyle->isEmpty()) {
|
|
if (isStyleSpanOrSpanWithOnlyStyleAttribute(*element) || isEmptyFontTag(element, AllowNonEmptyStyleAttribute)) {
|
|
insertedNodes.willRemoveNodePreservingChildren(element);
|
|
removeNodePreservingChildren(*element);
|
|
continue;
|
|
}
|
|
removeNodeAttribute(*element, styleAttr);
|
|
} else if (newInlineStyle->style()->propertyCount() != inlineStyle->propertyCount())
|
|
setNodeAttribute(*element, styleAttr, newInlineStyle->style()->asText());
|
|
|
|
// FIXME: Tolerate differences in id, class, and style attributes.
|
|
if (element->parentNode() && isNonTableCellHTMLBlockElement(element) && areIdenticalElements(*element, *element->parentNode())
|
|
&& VisiblePosition(firstPositionInNode(element->parentNode())) == VisiblePosition(firstPositionInNode(element))
|
|
&& VisiblePosition(lastPositionInNode(element->parentNode())) == VisiblePosition(lastPositionInNode(element))) {
|
|
insertedNodes.willRemoveNodePreservingChildren(element);
|
|
removeNodePreservingChildren(*element);
|
|
continue;
|
|
}
|
|
|
|
if (element->parentNode() && element->parentNode()->hasRichlyEditableStyle())
|
|
removeNodeAttribute(*element, contenteditableAttr);
|
|
|
|
// WebKit used to not add display: inline and float: none on copy.
|
|
// Keep this code around for backward compatibility
|
|
if (isLegacyAppleStyleSpan(element)) {
|
|
if (!element->firstChild()) {
|
|
insertedNodes.willRemoveNodePreservingChildren(element);
|
|
removeNodePreservingChildren(*element);
|
|
continue;
|
|
}
|
|
// There are other styles that style rules can give to style spans,
|
|
// but these are the two important ones because they'll prevent
|
|
// inserted content from appearing in the right paragraph.
|
|
// FIXME: Hyatt is concerned that selectively using display:inline will give inconsistent
|
|
// results. We already know one issue because td elements ignore their display property
|
|
// in quirks mode (which Mail.app is always in). We should look for an alternative.
|
|
|
|
// Mutate using the CSSOM wrapper so we get the same event behavior as a script.
|
|
if (isBlock(element))
|
|
element->cssomStyle().setPropertyInternal(CSSPropertyDisplay, "inline", false);
|
|
if (element->renderer() && element->renderer()->style().isFloating())
|
|
element->cssomStyle().setPropertyInternal(CSSPropertyFloat, "none", false);
|
|
}
|
|
}
|
|
}
|
|
|
|
static bool isProhibitedParagraphChild(const AtomString& name)
|
|
{
|
|
// https://dvcs.w3.org/hg/editing/raw-file/57abe6d3cb60/editing.html#prohibited-paragraph-child
|
|
static const auto localNames = makeNeverDestroyed([] {
|
|
static const HTMLQualifiedName* const tags[] = {
|
|
&addressTag.get(),
|
|
&articleTag.get(),
|
|
&asideTag.get(),
|
|
&blockquoteTag.get(),
|
|
&captionTag.get(),
|
|
¢erTag.get(),
|
|
&colTag.get(),
|
|
&colgroupTag.get(),
|
|
&ddTag.get(),
|
|
&detailsTag.get(),
|
|
&dirTag.get(),
|
|
&divTag.get(),
|
|
&dlTag.get(),
|
|
&dtTag.get(),
|
|
&fieldsetTag.get(),
|
|
&figcaptionTag.get(),
|
|
&figureTag.get(),
|
|
&footerTag.get(),
|
|
&formTag.get(),
|
|
&h1Tag.get(),
|
|
&h2Tag.get(),
|
|
&h3Tag.get(),
|
|
&h4Tag.get(),
|
|
&h5Tag.get(),
|
|
&h6Tag.get(),
|
|
&headerTag.get(),
|
|
&hgroupTag.get(),
|
|
&hrTag.get(),
|
|
&liTag.get(),
|
|
&listingTag.get(),
|
|
&mainTag.get(), // Missing in the specification.
|
|
&menuTag.get(),
|
|
&navTag.get(),
|
|
&olTag.get(),
|
|
&pTag.get(),
|
|
&plaintextTag.get(),
|
|
&preTag.get(),
|
|
§ionTag.get(),
|
|
&summaryTag.get(),
|
|
&tableTag.get(),
|
|
&tbodyTag.get(),
|
|
&tdTag.get(),
|
|
&tfootTag.get(),
|
|
&thTag.get(),
|
|
&theadTag.get(),
|
|
&trTag.get(),
|
|
&ulTag.get(),
|
|
&xmpTag.get(),
|
|
};
|
|
MemoryCompactLookupOnlyRobinHoodHashSet<AtomString> set;
|
|
for (auto& tag : tags)
|
|
set.add(tag->localName());
|
|
return set;
|
|
}());
|
|
return localNames.get().contains(name);
|
|
}
|
|
|
|
void ReplaceSelectionCommand::makeInsertedContentRoundTrippableWithHTMLTreeBuilder(InsertedNodes& insertedNodes)
|
|
{
|
|
RefPtr<Node> pastEndNode = insertedNodes.pastLastLeaf();
|
|
RefPtr<Node> next;
|
|
for (RefPtr<Node> node = insertedNodes.firstNodeInserted(); node && node != pastEndNode; node = next) {
|
|
next = NodeTraversal::next(*node);
|
|
|
|
if (!is<HTMLElement>(*node))
|
|
continue;
|
|
|
|
if (isProhibitedParagraphChild(downcast<HTMLElement>(*node).localName())) {
|
|
if (auto paragraphElement = makeRefPtr(enclosingElementWithTag(positionInParentBeforeNode(node.get()), pTag))) {
|
|
auto parent = makeRefPtr(paragraphElement->parentNode());
|
|
if (parent && parent->hasEditableStyle())
|
|
moveNodeOutOfAncestor(*node, *paragraphElement, insertedNodes);
|
|
}
|
|
}
|
|
|
|
if (isHeaderElement(node.get())) {
|
|
if (auto headerElement = makeRefPtr(highestEnclosingNodeOfType(positionInParentBeforeNode(node.get()), isHeaderElement))) {
|
|
if (headerElement->parentNode() && headerElement->parentNode()->isContentRichlyEditable())
|
|
moveNodeOutOfAncestor(*node, *headerElement, insertedNodes);
|
|
else {
|
|
auto newSpanElement = makeRefPtr(replaceElementWithSpanPreservingChildrenAndAttributes(downcast<HTMLElement>(*node)));
|
|
insertedNodes.didReplaceNode(node.get(), newSpanElement.get());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static inline bool hasRenderedText(const Text& text)
|
|
{
|
|
return text.renderer() && text.renderer()->hasRenderedText();
|
|
}
|
|
|
|
void ReplaceSelectionCommand::moveNodeOutOfAncestor(Node& node, Node& ancestor, InsertedNodes& insertedNodes)
|
|
{
|
|
Ref<Node> protectedNode = node;
|
|
Ref<Node> protectedAncestor = ancestor;
|
|
|
|
VisiblePosition positionAtEndOfNode = lastPositionInOrAfterNode(&node);
|
|
VisiblePosition lastPositionInParagraph = lastPositionInNode(&ancestor);
|
|
if (positionAtEndOfNode == lastPositionInParagraph) {
|
|
removeNode(node);
|
|
if (ancestor.nextSibling())
|
|
insertNodeBefore(WTFMove(protectedNode), *ancestor.nextSibling());
|
|
else
|
|
appendNode(WTFMove(protectedNode), *ancestor.parentNode());
|
|
} else {
|
|
RefPtr<Node> nodeToSplitTo = splitTreeToNode(node, ancestor, true);
|
|
removeNode(node);
|
|
if (nodeToSplitTo)
|
|
insertNodeBefore(WTFMove(protectedNode), *nodeToSplitTo);
|
|
}
|
|
|
|
document().updateLayoutIgnorePendingStylesheets();
|
|
|
|
bool safeToRemoveAncestor = true;
|
|
for (auto child = makeRefPtr(ancestor.firstChild()); child; child = child->nextSibling()) {
|
|
if (is<Text>(child) && hasRenderedText(downcast<Text>(*child))) {
|
|
safeToRemoveAncestor = false;
|
|
break;
|
|
}
|
|
|
|
if (is<Element>(child)) {
|
|
safeToRemoveAncestor = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (safeToRemoveAncestor) {
|
|
insertedNodes.willRemoveNode(&ancestor);
|
|
removeNode(ancestor);
|
|
}
|
|
}
|
|
|
|
void ReplaceSelectionCommand::removeUnrenderedTextNodesAtEnds(InsertedNodes& insertedNodes)
|
|
{
|
|
document().updateLayoutIgnorePendingStylesheets();
|
|
|
|
auto lastLeafInserted = makeRefPtr(insertedNodes.lastLeafInserted());
|
|
if (is<Text>(lastLeafInserted) && !hasRenderedText(downcast<Text>(*lastLeafInserted))
|
|
&& !enclosingElementWithTag(firstPositionInOrBeforeNode(lastLeafInserted.get()), selectTag)
|
|
&& !enclosingElementWithTag(firstPositionInOrBeforeNode(lastLeafInserted.get()), scriptTag)) {
|
|
insertedNodes.willRemoveNode(lastLeafInserted.get());
|
|
removeNode(*lastLeafInserted);
|
|
}
|
|
|
|
document().updateLayoutIgnorePendingStylesheets();
|
|
|
|
// We don't have to make sure that firstNodeInserted isn't inside a select or script element
|
|
// because it is a top level node in the fragment and the user can't insert into those elements.
|
|
auto firstNodeInserted = makeRefPtr(insertedNodes.firstNodeInserted());
|
|
if (is<Text>(firstNodeInserted) && !hasRenderedText(downcast<Text>(*firstNodeInserted))) {
|
|
insertedNodes.willRemoveNode(firstNodeInserted.get());
|
|
removeNode(*firstNodeInserted);
|
|
}
|
|
}
|
|
|
|
VisiblePosition ReplaceSelectionCommand::positionAtEndOfInsertedContent() const
|
|
{
|
|
// FIXME: Why is this hack here? What's special about <select> tags?
|
|
auto enclosingSelect = makeRefPtr(enclosingElementWithTag(m_endOfInsertedContent, selectTag));
|
|
return enclosingSelect ? lastPositionInOrAfterNode(enclosingSelect.get()) : m_endOfInsertedContent;
|
|
}
|
|
|
|
VisiblePosition ReplaceSelectionCommand::positionAtStartOfInsertedContent() const
|
|
{
|
|
return m_startOfInsertedContent;
|
|
}
|
|
|
|
// Remove style spans before insertion if they are unnecessary. It's faster because we'll
|
|
// avoid doing a layout.
|
|
static bool handleStyleSpansBeforeInsertion(ReplacementFragment& fragment, const Position& insertionPos)
|
|
{
|
|
auto topNode = makeRefPtr(fragment.firstChild());
|
|
|
|
// Handling the case where we are doing Paste as Quotation or pasting into quoted content is more complicated (see handleStyleSpans)
|
|
// and doesn't receive the optimization.
|
|
if (isMailPasteAsQuotationNode(topNode.get()) || enclosingNodeOfType(firstPositionInOrBeforeNode(topNode.get()), isMailBlockquote, CanCrossEditingBoundary))
|
|
return false;
|
|
|
|
// Either there are no style spans in the fragment or a WebKit client has added content to the fragment
|
|
// before inserting it. Look for and handle style spans after insertion.
|
|
if (!isLegacyAppleStyleSpan(topNode.get()))
|
|
return false;
|
|
|
|
auto& wrappingStyleSpan = downcast<HTMLElement>(*topNode);
|
|
auto styleAtInsertionPos = EditingStyle::create(insertionPos.parentAnchoredEquivalent());
|
|
String styleText = styleAtInsertionPos->style()->asText();
|
|
|
|
// FIXME: This string comparison is a naive way of comparing two styles.
|
|
// We should be taking the diff and check that the diff is empty.
|
|
if (styleText != wrappingStyleSpan.getAttribute(styleAttr))
|
|
return false;
|
|
|
|
fragment.removeNodePreservingChildren(wrappingStyleSpan);
|
|
return true;
|
|
}
|
|
|
|
// At copy time, WebKit wraps copied content in a span that contains the source document's
|
|
// default styles. If the copied Range inherits any other styles from its ancestors, we put
|
|
// those styles on a second span.
|
|
// This function removes redundant styles from those spans, and removes the spans if all their
|
|
// styles are redundant.
|
|
// We should remove the Apple-style-span class when we're done, see <rdar://problem/5685600>.
|
|
// We should remove styles from spans that are overridden by all of their children, either here
|
|
// or at copy time.
|
|
void ReplaceSelectionCommand::handleStyleSpans(InsertedNodes& insertedNodes)
|
|
{
|
|
RefPtr<HTMLElement> wrappingStyleSpan;
|
|
// The style span that contains the source document's default style should be at
|
|
// the top of the fragment, but Mail sometimes adds a wrapper (for Paste As Quotation),
|
|
// so search for the top level style span instead of assuming it's at the top.
|
|
for (auto node = makeRefPtr(insertedNodes.firstNodeInserted()); node; node = NodeTraversal::next(*node)) {
|
|
if (isLegacyAppleStyleSpan(node.get())) {
|
|
wrappingStyleSpan = static_pointer_cast<HTMLElement>(WTFMove(node));
|
|
break;
|
|
}
|
|
}
|
|
|
|
// There might not be any style spans if we're pasting from another application or if
|
|
// we are here because of a document.execCommand("InsertHTML", ...) call.
|
|
if (!wrappingStyleSpan)
|
|
return;
|
|
|
|
auto style = EditingStyle::create(wrappingStyleSpan->inlineStyle());
|
|
auto context = makeRefPtr(wrappingStyleSpan->parentNode());
|
|
|
|
// If Mail wraps the fragment with a Paste as Quotation blockquote, or if you're pasting into a quoted region,
|
|
// styles from blockquoteNode are allowed to override those from the source document, see <rdar://problem/4930986> and <rdar://problem/5089327>.
|
|
RefPtr<Node> blockquoteNode;
|
|
if (isMailPasteAsQuotationNode(context.get()))
|
|
blockquoteNode = context;
|
|
else
|
|
blockquoteNode = enclosingNodeOfType(firstPositionInNode(context.get()), isMailBlockquote, CanCrossEditingBoundary);
|
|
|
|
if (blockquoteNode)
|
|
context = document().documentElement();
|
|
|
|
// This operation requires that only editing styles to be removed from sourceDocumentStyle.
|
|
style->prepareToApplyAt(firstPositionInNode(context.get()));
|
|
|
|
// Remove block properties in the span's style. This prevents properties that probably have no effect
|
|
// currently from affecting blocks later if the style is cloned for a new block element during a future
|
|
// editing operation.
|
|
// FIXME: They *can* have an effect currently if blocks beneath the style span aren't individually marked
|
|
// with block styles by the editing engine used to style them. WebKit doesn't do this, but others might.
|
|
style->removeBlockProperties();
|
|
|
|
if (style->isEmpty() || !wrappingStyleSpan->firstChild()) {
|
|
insertedNodes.willRemoveNodePreservingChildren(wrappingStyleSpan.get());
|
|
removeNodePreservingChildren(*wrappingStyleSpan);
|
|
} else
|
|
setNodeAttribute(*wrappingStyleSpan, styleAttr, style->style()->asText());
|
|
}
|
|
|
|
void ReplaceSelectionCommand::mergeEndIfNeeded()
|
|
{
|
|
if (!m_shouldMergeEnd)
|
|
return;
|
|
|
|
VisiblePosition startOfInsertedContent(positionAtStartOfInsertedContent());
|
|
VisiblePosition endOfInsertedContent(positionAtEndOfInsertedContent());
|
|
|
|
// Bail to avoid infinite recursion.
|
|
if (m_movingParagraph) {
|
|
ASSERT_NOT_REACHED();
|
|
return;
|
|
}
|
|
|
|
ASSERT(startOfInsertedContent.isNull() == endOfInsertedContent.isNull());
|
|
if (startOfInsertedContent.isNull() || endOfInsertedContent.isNull())
|
|
return;
|
|
|
|
// Merging two paragraphs will destroy the moved one's block styles. Always move the end of inserted forward
|
|
// to preserve the block style of the paragraph already in the document, unless the paragraph to move would
|
|
// include the what was the start of the selection that was pasted into, so that we preserve that paragraph's
|
|
// block styles.
|
|
bool mergeForward = !(inSameParagraph(startOfInsertedContent, endOfInsertedContent) && !isStartOfParagraph(startOfInsertedContent));
|
|
|
|
VisiblePosition destination = mergeForward ? endOfInsertedContent.next() : endOfInsertedContent;
|
|
VisiblePosition startOfParagraphToMove = mergeForward ? startOfParagraph(endOfInsertedContent) : endOfInsertedContent.next();
|
|
|
|
// Merging forward could result in deleting the destination anchor node.
|
|
// To avoid this, we add a placeholder node before the start of the paragraph.
|
|
if (endOfParagraph(startOfParagraphToMove) == destination) {
|
|
auto placeholder = HTMLBRElement::create(document());
|
|
insertNodeBefore(placeholder, *startOfParagraphToMove.deepEquivalent().deprecatedNode());
|
|
destination = VisiblePosition(positionBeforeNode(placeholder.ptr()));
|
|
}
|
|
|
|
moveParagraph(startOfParagraphToMove, endOfParagraph(startOfParagraphToMove), destination);
|
|
|
|
// Merging forward will remove m_endOfInsertedContent from the document.
|
|
if (mergeForward) {
|
|
if (m_startOfInsertedContent.isOrphan())
|
|
m_startOfInsertedContent = endingSelection().visibleStart().deepEquivalent();
|
|
m_endOfInsertedContent = endingSelection().visibleEnd().deepEquivalent();
|
|
// If we merged text nodes, m_endOfInsertedContent could be null. If this is the case, we use m_startOfInsertedContent.
|
|
if (m_endOfInsertedContent.isNull())
|
|
m_endOfInsertedContent = m_startOfInsertedContent;
|
|
}
|
|
}
|
|
|
|
static RefPtr<Node> enclosingInline(Node* node)
|
|
{
|
|
auto currentNode = makeRefPtr(node);
|
|
while (auto parent = makeRefPtr(currentNode->parentNode())) {
|
|
if (isBlockFlowElement(*parent) || parent->hasTagName(bodyTag))
|
|
return currentNode;
|
|
// Stop if any previous sibling is a block.
|
|
for (auto sibling = makeRefPtr(currentNode->previousSibling()); sibling; sibling = sibling->previousSibling()) {
|
|
if (isBlockFlowElement(*sibling))
|
|
return currentNode;
|
|
}
|
|
currentNode = parent;
|
|
}
|
|
return currentNode;
|
|
}
|
|
|
|
static bool isInlineNodeWithStyle(const Node* node)
|
|
{
|
|
// We don't want to skip over any block elements.
|
|
if (isBlock(node))
|
|
return false;
|
|
|
|
if (!node->isHTMLElement())
|
|
return false;
|
|
|
|
// We can skip over elements whose class attribute is
|
|
// one of our internal classes.
|
|
const HTMLElement* element = static_cast<const HTMLElement*>(node);
|
|
const AtomString& classAttributeValue = element->attributeWithoutSynchronization(classAttr);
|
|
if (classAttributeValue == AppleTabSpanClass
|
|
|| classAttributeValue == AppleConvertedSpace
|
|
|| classAttributeValue == ApplePasteAsQuotation)
|
|
return true;
|
|
|
|
return EditingStyle::elementIsStyledSpanOrHTMLEquivalent(*element);
|
|
}
|
|
|
|
inline Node* nodeToSplitToAvoidPastingIntoInlineNodesWithStyle(const Position& insertionPos)
|
|
{
|
|
Node* containgBlock = enclosingBlock(insertionPos.containerNode());
|
|
return highestEnclosingNodeOfType(insertionPos, isInlineNodeWithStyle, CannotCrossEditingBoundary, containgBlock);
|
|
}
|
|
|
|
bool ReplaceSelectionCommand::willApplyCommand()
|
|
{
|
|
m_documentFragmentPlainText = m_documentFragment->textContent();
|
|
m_documentFragmentHTMLMarkup = serializeFragment(*m_documentFragment, SerializedNodes::SubtreeIncludingNode);
|
|
ensureReplacementFragment();
|
|
return CompositeEditCommand::willApplyCommand();
|
|
}
|
|
|
|
static bool hasBlankLineBetweenParagraphs(Position& position)
|
|
{
|
|
bool reachedBoundaryStart = false;
|
|
bool reachedBoundaryEnd = false;
|
|
VisiblePosition visiblePosition(position);
|
|
VisiblePosition previousPosition = visiblePosition.previous(CannotCrossEditingBoundary, &reachedBoundaryStart);
|
|
VisiblePosition nextPosition = visiblePosition.next(CannotCrossEditingBoundary, &reachedBoundaryStart);
|
|
bool hasLineBeforePosition = isEndOfLine(previousPosition);
|
|
|
|
return !reachedBoundaryStart && !reachedBoundaryEnd && isBlankParagraph(visiblePosition) && hasLineBeforePosition && isStartOfLine(nextPosition);
|
|
}
|
|
|
|
void ReplaceSelectionCommand::doApply()
|
|
{
|
|
VisibleSelection selection = endingSelection();
|
|
ASSERT(selection.isCaretOrRange());
|
|
ASSERT(selection.start().deprecatedNode());
|
|
if (selection.isNoneOrOrphaned() || !selection.start().deprecatedNode() || !selection.isContentEditable())
|
|
return;
|
|
|
|
// In plain text only regions, we create style-less fragments, so the inserted content will automatically
|
|
// match the style of the surrounding area and so we can avoid unnecessary work below for m_matchStyle.
|
|
if (!selection.isContentRichlyEditable())
|
|
m_matchStyle = false;
|
|
|
|
ReplacementFragment& fragment = *ensureReplacementFragment();
|
|
if (performTrivialReplace(fragment))
|
|
return;
|
|
|
|
// We can skip matching the style if the selection is plain text.
|
|
if ((selection.start().deprecatedNode()->renderer() && selection.start().deprecatedNode()->renderer()->style().userModify() == UserModify::ReadWritePlaintextOnly)
|
|
&& (selection.end().deprecatedNode()->renderer() && selection.end().deprecatedNode()->renderer()->style().userModify() == UserModify::ReadWritePlaintextOnly))
|
|
m_matchStyle = false;
|
|
|
|
if (m_matchStyle) {
|
|
m_insertionStyle = EditingStyle::create(selection.start());
|
|
m_insertionStyle->mergeTypingStyle(document());
|
|
}
|
|
|
|
VisiblePosition visibleStart = selection.visibleStart();
|
|
VisiblePosition visibleEnd = selection.visibleEnd();
|
|
|
|
bool selectionEndWasEndOfParagraph = isEndOfParagraph(visibleEnd);
|
|
bool selectionStartWasStartOfParagraph = isStartOfParagraph(visibleStart);
|
|
|
|
auto startBlock = makeRefPtr(enclosingBlock(visibleStart.deepEquivalent().deprecatedNode()));
|
|
|
|
Position insertionPos = selection.start();
|
|
bool shouldHandleMailBlockquote = enclosingNodeOfType(insertionPos, isMailBlockquote, CanCrossEditingBoundary) && !m_ignoreMailBlockquote;
|
|
bool selectionIsPlainText = !selection.isContentRichlyEditable();
|
|
auto currentRoot = makeRefPtr(selection.rootEditableElement());
|
|
|
|
if ((selectionStartWasStartOfParagraph && selectionEndWasEndOfParagraph && !shouldHandleMailBlockquote)
|
|
|| startBlock == currentRoot || isListItem(startBlock.get()) || selectionIsPlainText)
|
|
m_preventNesting = false;
|
|
|
|
if (selection.isRange()) {
|
|
// When the end of the selection being pasted into is at the end of a paragraph, and that selection
|
|
// spans multiple blocks, not merging may leave an empty line.
|
|
// When the start of the selection being pasted into is at the start of a block, not merging
|
|
// will leave hanging block(s).
|
|
// Merge blocks if the start of the selection was in a Mail blockquote, since we handle
|
|
// that case specially to prevent nesting.
|
|
bool mergeBlocksAfterDelete = shouldHandleMailBlockquote || isEndOfParagraph(visibleEnd) || isStartOfBlock(visibleStart);
|
|
// FIXME: We should only expand to include fully selected special elements if we are copying a
|
|
// selection and pasting it on top of itself.
|
|
// FIXME: capturing the content of this delete would allow a replace accessibility notification instead of a simple insert
|
|
deleteSelection(false, mergeBlocksAfterDelete, true, false, true);
|
|
visibleStart = endingSelection().visibleStart();
|
|
if (fragment.hasInterchangeNewlineAtStart()) {
|
|
if (isEndOfParagraph(visibleStart) && !isStartOfParagraph(visibleStart)) {
|
|
if (!isEndOfEditableOrNonEditableContent(visibleStart))
|
|
setEndingSelection(visibleStart.next());
|
|
} else
|
|
insertParagraphSeparator();
|
|
}
|
|
insertionPos = endingSelection().start();
|
|
} else {
|
|
ASSERT(selection.isCaret());
|
|
if (fragment.hasInterchangeNewlineAtStart()) {
|
|
VisiblePosition next = visibleStart.next(CannotCrossEditingBoundary);
|
|
if (isEndOfParagraph(visibleStart) && !isStartOfParagraph(visibleStart) && next.isNotNull())
|
|
setEndingSelection(next);
|
|
else {
|
|
insertParagraphSeparator();
|
|
visibleStart = endingSelection().visibleStart();
|
|
}
|
|
}
|
|
// We split the current paragraph in two to avoid nesting the blocks from the fragment inside the current block.
|
|
// For example paste <div>foo</div><div>bar</div><div>baz</div> into <div>x^x</div>, where ^ is the caret.
|
|
// As long as the div styles are the same, visually you'd expect: <div>xbar</div><div>bar</div><div>bazx</div>,
|
|
// not <div>xbar<div>bar</div><div>bazx</div></div>.
|
|
// Don't do this if the selection started in a Mail blockquote.
|
|
if (m_preventNesting && !shouldHandleMailBlockquote && !isEndOfParagraph(visibleStart) && !isStartOfParagraph(visibleStart)) {
|
|
insertParagraphSeparator();
|
|
setEndingSelection(endingSelection().visibleStart().previous());
|
|
}
|
|
insertionPos = endingSelection().start();
|
|
}
|
|
|
|
// We don't want any of the pasted content to end up nested in a Mail blockquote, so first break
|
|
// out of any surrounding Mail blockquotes. Unless we're inserting in a table, in which case
|
|
// breaking the blockquote will prevent the content from actually being inserted in the table.
|
|
if (shouldHandleMailBlockquote && m_preventNesting && !(enclosingNodeOfType(insertionPos, &isTableStructureNode))) {
|
|
applyCommandToComposite(BreakBlockquoteCommand::create(document()));
|
|
// This will leave a br between the split.
|
|
if (auto br = makeRefPtr(endingSelection().start().deprecatedNode())) {
|
|
ASSERT(br->hasTagName(brTag));
|
|
insertionPos = positionInParentBeforeNode(br.get());
|
|
removeNode(*br);
|
|
}
|
|
}
|
|
|
|
// Inserting content could cause whitespace to collapse, e.g. inserting <div>foo</div> into hello^ world.
|
|
prepareWhitespaceAtPositionForSplit(insertionPos);
|
|
|
|
// If the downstream node has been removed there's no point in continuing.
|
|
if (!insertionPos.downstream().deprecatedNode())
|
|
return;
|
|
|
|
// NOTE: This would be an incorrect usage of downstream() if downstream() were changed to mean the last position after
|
|
// p that maps to the same visible position as p (since in the case where a br is at the end of a block and collapsed
|
|
// away, there are positions after the br which map to the same visible position as [br, 0]).
|
|
RefPtr<Node> endBR = insertionPos.downstream().deprecatedNode()->hasTagName(brTag) ? insertionPos.downstream().deprecatedNode() : nullptr;
|
|
VisiblePosition originalVisPosBeforeEndBR;
|
|
if (endBR)
|
|
originalVisPosBeforeEndBR = VisiblePosition(positionBeforeNode(endBR.get())).previous();
|
|
|
|
RefPtr<Node> insertionBlock = enclosingBlock(insertionPos.deprecatedNode());
|
|
|
|
// Adjust insertionPos to prevent nesting.
|
|
// If the start was in a Mail blockquote, we will have already handled adjusting insertionPos above.
|
|
if (m_preventNesting && insertionBlock && !isTableCell(insertionBlock.get()) && !shouldHandleMailBlockquote) {
|
|
ASSERT(insertionBlock != currentRoot);
|
|
VisiblePosition visibleInsertionPos(insertionPos);
|
|
if (isEndOfBlock(visibleInsertionPos) && !(isStartOfBlock(visibleInsertionPos) && fragment.hasInterchangeNewlineAtEnd()))
|
|
insertionPos = positionInParentAfterNode(insertionBlock.get());
|
|
else if (isStartOfBlock(visibleInsertionPos))
|
|
insertionPos = positionInParentBeforeNode(insertionBlock.get());
|
|
}
|
|
|
|
// Paste at start or end of link goes outside of link.
|
|
insertionPos = positionAvoidingSpecialElementBoundary(insertionPos);
|
|
|
|
// FIXME: Can this wait until after the operation has been performed? There doesn't seem to be
|
|
// any work performed after this that queries or uses the typing style.
|
|
document().selection().clearTypingStyle();
|
|
|
|
// We don't want the destination to end up inside nodes that weren't selected. To avoid that, we move the
|
|
// position forward without changing the visible position so we're still at the same visible location, but
|
|
// outside of preceding tags.
|
|
insertionPos = positionAvoidingPrecedingNodes(insertionPos);
|
|
|
|
// Paste into run of tabs splits the tab span.
|
|
insertionPos = positionOutsideTabSpan(insertionPos);
|
|
|
|
bool hasBlankLinesBetweenParagraphs = hasBlankLineBetweenParagraphs(insertionPos);
|
|
bool handledStyleSpans = handleStyleSpansBeforeInsertion(fragment, insertionPos);
|
|
bool needsColorTransformed = fragmentNeedsColorTransformed(fragment, insertionPos);
|
|
|
|
// We're finished if there is nothing to add.
|
|
if (fragment.isEmpty() || !fragment.firstChild())
|
|
return;
|
|
|
|
// If we are not trying to match the destination style we prefer a position
|
|
// that is outside inline elements that provide style.
|
|
// This way we can produce a less verbose markup.
|
|
// We can skip this optimization for fragments not wrapped in one of
|
|
// our style spans and for positions inside list items
|
|
// since insertAsListItems already does the right thing.
|
|
if (!m_matchStyle && !enclosingList(insertionPos.containerNode())) {
|
|
if (auto containerNode = makeRefPtr(insertionPos.containerNode())) {
|
|
if (containerNode->isTextNode() && insertionPos.offsetInContainerNode() && !insertionPos.atLastEditingPositionForNode()) {
|
|
splitTextNode(*insertionPos.containerText(), insertionPos.offsetInContainerNode());
|
|
insertionPos = firstPositionInNode(insertionPos.containerNode());
|
|
}
|
|
}
|
|
|
|
if (RefPtr<Node> nodeToSplitTo = nodeToSplitToAvoidPastingIntoInlineNodesWithStyle(insertionPos)) {
|
|
if (nodeToSplitTo->parentNode() && insertionPos.containerNode() != nodeToSplitTo->parentNode()) {
|
|
auto splitStart = makeRefPtr(insertionPos.computeNodeAfterPosition());
|
|
if (!splitStart)
|
|
splitStart = insertionPos.containerNode();
|
|
ASSERT(splitStart);
|
|
nodeToSplitTo = splitTreeToNode(*splitStart, *nodeToSplitTo->parentNode()).get();
|
|
insertionPos = positionInParentBeforeNode(nodeToSplitTo.get());
|
|
}
|
|
}
|
|
}
|
|
|
|
// FIXME: When pasting rich content we're often prevented from heading down the fast path by style spans. Try
|
|
// again here if they've been removed.
|
|
|
|
// 1) Insert the content.
|
|
// 2) Remove redundant styles and style tags, this inner <b> for example: <b>foo <b>bar</b> baz</b>.
|
|
// 3) Merge the start of the added content with the content before the position being pasted into.
|
|
// 4) Do one of the following: a) expand the last br if the fragment ends with one and it collapsed,
|
|
// b) merge the last paragraph of the incoming fragment with the paragraph that contained the
|
|
// end of the selection that was pasted into, or c) handle an interchange newline at the end of the
|
|
// incoming fragment.
|
|
// 5) Add spaces for smart replace.
|
|
// 6) Select the replacement if requested, and match style if requested.
|
|
|
|
InsertedNodes insertedNodes;
|
|
RefPtr<Node> refNode = fragment.firstChild();
|
|
RefPtr<Node> node = refNode->nextSibling();
|
|
|
|
if (refNode)
|
|
fragment.removeNode(*refNode);
|
|
|
|
auto blockStart = makeRefPtr(enclosingBlock(insertionPos.deprecatedNode()));
|
|
bool isInsertingIntoList = (isListHTMLElement(refNode.get()) || (isLegacyAppleStyleSpan(refNode.get()) && isListHTMLElement(refNode->firstChild())))
|
|
&& blockStart && blockStart->renderer()->isListItem();
|
|
if (isInsertingIntoList)
|
|
refNode = insertAsListItems(downcast<HTMLElement>(*refNode), blockStart.get(), insertionPos, insertedNodes);
|
|
else if (isEditablePosition(insertionPos)) {
|
|
insertNodeAt(*refNode, insertionPos);
|
|
insertedNodes.respondToNodeInsertion(refNode.get());
|
|
}
|
|
|
|
// Mutation events (bug 22634) may have already removed the inserted content
|
|
if (!refNode->isConnected())
|
|
return;
|
|
|
|
bool plainTextFragment = isPlainTextMarkup(refNode.get());
|
|
|
|
while (node) {
|
|
RefPtr<Node> next = node->nextSibling();
|
|
fragment.removeNode(*node);
|
|
insertNodeAfter(*node, *refNode);
|
|
insertedNodes.respondToNodeInsertion(node.get());
|
|
|
|
// Mutation events (bug 22634) may have already removed the inserted content
|
|
if (!node->isConnected())
|
|
return;
|
|
|
|
refNode = node;
|
|
if (node && plainTextFragment)
|
|
plainTextFragment = isPlainTextMarkup(node.get());
|
|
node = next;
|
|
}
|
|
|
|
if (insertedNodes.isEmpty())
|
|
return;
|
|
removeUnrenderedTextNodesAtEnds(insertedNodes);
|
|
|
|
if (!handledStyleSpans)
|
|
handleStyleSpans(insertedNodes);
|
|
|
|
// Mutation events (bug 20161) may have already removed the inserted content
|
|
if (insertedNodes.isEmpty())
|
|
return;
|
|
if (!insertedNodes.firstNodeInserted()->isConnected())
|
|
return;
|
|
|
|
VisiblePosition startOfInsertedContent = firstPositionInOrBeforeNode(insertedNodes.firstNodeInserted());
|
|
|
|
// We inserted before the insertionBlock to prevent nesting, and the content before the insertionBlock wasn't in its own block and
|
|
// didn't have a br after it, so the inserted content ended up in the same paragraph.
|
|
if (!startOfInsertedContent.isNull() && insertionBlock && insertionPos.deprecatedNode() == insertionBlock->parentNode() && (unsigned)insertionPos.deprecatedEditingOffset() < insertionBlock->computeNodeIndex() && !isStartOfParagraph(startOfInsertedContent))
|
|
insertNodeAt(HTMLBRElement::create(document()), startOfInsertedContent.deepEquivalent());
|
|
|
|
if (endBR && (plainTextFragment || shouldRemoveEndBR(endBR.get(), originalVisPosBeforeEndBR))) {
|
|
auto parent = makeRefPtr(endBR->parentNode());
|
|
insertedNodes.willRemoveNode(endBR.get());
|
|
removeNode(*endBR);
|
|
document().updateLayoutIgnorePendingStylesheets();
|
|
if (auto nodeToRemove = makeRefPtr(highestNodeToRemoveInPruning(parent.get()))) {
|
|
insertedNodes.willRemovePossibleAncestorNode(nodeToRemove.get());
|
|
removeNode(*nodeToRemove);
|
|
}
|
|
}
|
|
|
|
if (insertedNodes.isEmpty())
|
|
return;
|
|
|
|
makeInsertedContentRoundTrippableWithHTMLTreeBuilder(insertedNodes);
|
|
if (insertedNodes.isEmpty())
|
|
return;
|
|
if (!insertedNodes.firstNodeInserted()->isConnected())
|
|
return;
|
|
|
|
if (needsColorTransformed)
|
|
inverseTransformColor(insertedNodes);
|
|
|
|
removeRedundantStylesAndKeepStyleSpanInline(insertedNodes);
|
|
if (insertedNodes.isEmpty())
|
|
return;
|
|
|
|
if (m_sanitizeFragment)
|
|
applyCommandToComposite(SimplifyMarkupCommand::create(document(), insertedNodes.firstNodeInserted(), insertedNodes.pastLastLeaf()));
|
|
|
|
// Setup m_startOfInsertedContent and m_endOfInsertedContent. This should be the last two lines of code that access insertedNodes.
|
|
m_startOfInsertedContent = firstPositionInOrBeforeNode(insertedNodes.firstNodeInserted());
|
|
m_endOfInsertedContent = lastPositionInOrAfterNode(insertedNodes.lastLeafInserted());
|
|
|
|
// Determine whether or not we should merge the end of inserted content with what's after it before we do
|
|
// the start merge so that the start merge doesn't effect our decision.
|
|
m_shouldMergeEnd = shouldMergeEnd(selectionEndWasEndOfParagraph);
|
|
|
|
if (shouldMergeStart(selectionStartWasStartOfParagraph, fragment.hasInterchangeNewlineAtStart(), shouldHandleMailBlockquote)) {
|
|
VisiblePosition startOfParagraphToMove = positionAtStartOfInsertedContent();
|
|
VisiblePosition destination = startOfParagraphToMove.previous();
|
|
// We need to handle the case where we need to merge the end
|
|
// but our destination node is inside an inline that is the last in the block.
|
|
// We insert a placeholder before the newly inserted content to avoid being merged into the inline.
|
|
Node* destinationNode = destination.deepEquivalent().deprecatedNode();
|
|
if (m_shouldMergeEnd && destinationNode != enclosingInline(destinationNode) && enclosingInline(destinationNode)->nextSibling())
|
|
insertNodeBefore(HTMLBRElement::create(document()), *refNode);
|
|
|
|
// Merging the first paragraph of inserted content with the content that came
|
|
// before the selection that was pasted into would also move content after
|
|
// the selection that was pasted into if: only one paragraph was being pasted,
|
|
// and it was not wrapped in a block, the selection that was pasted into ended
|
|
// at the end of a block and the next paragraph didn't start at the start of a block.
|
|
// Insert a line break just after the inserted content to separate it from what
|
|
// comes after and prevent that from happening.
|
|
VisiblePosition endOfInsertedContent = positionAtEndOfInsertedContent();
|
|
if (startOfParagraph(endOfInsertedContent) == startOfParagraphToMove) {
|
|
insertNodeAt(HTMLBRElement::create(document()), endOfInsertedContent.deepEquivalent());
|
|
// Mutation events (bug 22634) triggered by inserting the <br> might have removed the content we're about to move
|
|
if (!startOfParagraphToMove.deepEquivalent().anchorNode()->isConnected())
|
|
return;
|
|
}
|
|
|
|
// FIXME: Maintain positions for the start and end of inserted content instead of keeping nodes. The nodes are
|
|
// only ever used to create positions where inserted content starts/ends.
|
|
moveParagraph(startOfParagraphToMove, endOfParagraph(startOfParagraphToMove), destination);
|
|
m_startOfInsertedContent = endingSelection().visibleStart().deepEquivalent().downstream();
|
|
if (m_endOfInsertedContent.isOrphan())
|
|
m_endOfInsertedContent = endingSelection().visibleEnd().deepEquivalent().upstream();
|
|
}
|
|
|
|
Position lastPositionToSelect;
|
|
if (fragment.hasInterchangeNewlineAtEnd()) {
|
|
VisiblePosition endOfInsertedContent = positionAtEndOfInsertedContent();
|
|
VisiblePosition next = endOfInsertedContent.next(CannotCrossEditingBoundary);
|
|
|
|
if (selectionEndWasEndOfParagraph || !isEndOfParagraph(endOfInsertedContent) || next.isNull()) {
|
|
if (!isStartOfParagraph(endOfInsertedContent)) {
|
|
setEndingSelection(endOfInsertedContent);
|
|
auto enclosingNode = makeRefPtr(enclosingBlock(endOfInsertedContent.deepEquivalent().deprecatedNode()));
|
|
if (isListItem(enclosingNode.get())) {
|
|
auto newListItem = HTMLLIElement::create(document());
|
|
insertNodeAfter(newListItem.copyRef(), *enclosingNode);
|
|
setEndingSelection(VisiblePosition(firstPositionInNode(newListItem.ptr())));
|
|
} else {
|
|
// Use a default paragraph element (a plain div) for the empty paragraph, using the last paragraph
|
|
// block's style seems to annoy users.
|
|
insertParagraphSeparator(true, !shouldHandleMailBlockquote && highestEnclosingNodeOfType(endOfInsertedContent.deepEquivalent(),
|
|
isMailBlockquote, CannotCrossEditingBoundary, insertedNodes.firstNodeInserted()->parentNode()));
|
|
}
|
|
|
|
// Select up to the paragraph separator that was added.
|
|
lastPositionToSelect = endingSelection().visibleStart().deepEquivalent();
|
|
updateNodesInserted(lastPositionToSelect.deprecatedNode());
|
|
}
|
|
} else {
|
|
// Select up to the beginning of the next paragraph.
|
|
lastPositionToSelect = next.deepEquivalent().downstream();
|
|
}
|
|
|
|
} else
|
|
mergeEndIfNeeded();
|
|
|
|
if (auto mailBlockquote = makeRefPtr(enclosingNodeOfType(positionAtStartOfInsertedContent().deepEquivalent(), isMailPasteAsQuotationNode)))
|
|
removeNodeAttribute(downcast<Element>(*mailBlockquote), classAttr);
|
|
|
|
if (shouldPerformSmartReplace())
|
|
addSpacesForSmartReplace();
|
|
|
|
if (!isInsertingIntoList && hasBlankLinesBetweenParagraphs && shouldPerformSmartParagraphReplace())
|
|
addNewLinesForSmartReplace();
|
|
|
|
// If we are dealing with a fragment created from plain text
|
|
// no style matching is necessary.
|
|
if (plainTextFragment)
|
|
m_matchStyle = false;
|
|
|
|
completeHTMLReplacement(lastPositionToSelect);
|
|
}
|
|
|
|
String ReplaceSelectionCommand::inputEventData() const
|
|
{
|
|
if (isEditingTextAreaOrTextInput())
|
|
return m_documentFragment->textContent();
|
|
|
|
return CompositeEditCommand::inputEventData();
|
|
}
|
|
|
|
RefPtr<DataTransfer> ReplaceSelectionCommand::inputEventDataTransfer() const
|
|
{
|
|
if (isEditingTextAreaOrTextInput())
|
|
return CompositeEditCommand::inputEventDataTransfer();
|
|
|
|
return DataTransfer::createForInputEvent(m_documentFragmentPlainText, m_documentFragmentHTMLMarkup);
|
|
}
|
|
|
|
bool ReplaceSelectionCommand::shouldRemoveEndBR(Node* endBR, const VisiblePosition& originalVisPosBeforeEndBR)
|
|
{
|
|
if (!endBR || !endBR->isConnected())
|
|
return false;
|
|
|
|
VisiblePosition visiblePos(positionBeforeNode(endBR));
|
|
|
|
// Don't remove the br if nothing was inserted.
|
|
if (visiblePos.previous() == originalVisPosBeforeEndBR)
|
|
return false;
|
|
|
|
// Remove the br if it is collapsed away and so is unnecessary.
|
|
if (!document().inNoQuirksMode() && isEndOfBlock(visiblePos) && !isStartOfParagraph(visiblePos))
|
|
return true;
|
|
|
|
// A br that was originally holding a line open should be displaced by inserted content or turned into a line break.
|
|
// A br that was originally acting as a line break should still be acting as a line break, not as a placeholder.
|
|
return isStartOfParagraph(visiblePos) && isEndOfParagraph(visiblePos);
|
|
}
|
|
|
|
bool ReplaceSelectionCommand::shouldPerformSmartReplace() const
|
|
{
|
|
if (!m_smartReplace)
|
|
return false;
|
|
|
|
auto textControl = makeRefPtr(enclosingTextFormControl(positionAtStartOfInsertedContent().deepEquivalent()));
|
|
if (is<HTMLInputElement>(textControl) && downcast<HTMLInputElement>(*textControl).isPasswordField())
|
|
return false; // Disable smart replace for password fields.
|
|
|
|
return true;
|
|
}
|
|
|
|
bool ReplaceSelectionCommand::shouldPerformSmartParagraphReplace() const
|
|
{
|
|
if (!m_smartReplace)
|
|
return false;
|
|
|
|
if (!document().editingBehavior().shouldSmartInsertDeleteParagraphs())
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool isCharacterSmartReplaceExemptConsideringNonBreakingSpace(UChar32 character, bool previousCharacter)
|
|
{
|
|
return isCharacterSmartReplaceExempt(character == noBreakSpace ? ' ' : character, previousCharacter);
|
|
}
|
|
|
|
void ReplaceSelectionCommand::addNewLinesForSmartReplace()
|
|
{
|
|
VisiblePosition startOfInsertedContent = positionAtStartOfInsertedContent();
|
|
VisiblePosition endOfInsertedContent = positionAtEndOfInsertedContent();
|
|
|
|
bool isPastedContentEntireParagraphs = isStartOfParagraph(startOfInsertedContent) && isEndOfParagraph(endOfInsertedContent);
|
|
|
|
// If we aren't pasting a paragraph, no need to attempt to insert newlines.
|
|
if (!isPastedContentEntireParagraphs)
|
|
return;
|
|
|
|
bool reachedBoundaryStart = false;
|
|
bool reachedBoundaryEnd = false;
|
|
VisiblePosition positionBeforeStart = startOfInsertedContent.previous(CannotCrossEditingBoundary, &reachedBoundaryStart);
|
|
VisiblePosition positionAfterEnd = endOfInsertedContent.next(CannotCrossEditingBoundary, &reachedBoundaryEnd);
|
|
|
|
if (!reachedBoundaryStart && !reachedBoundaryEnd) {
|
|
if (!isBlankParagraph(positionBeforeStart) && !isBlankParagraph(startOfInsertedContent) && isEndOfLine(positionBeforeStart) && !isEndOfEditableOrNonEditableContent(positionAfterEnd) && !isEndOfEditableOrNonEditableContent(endOfInsertedContent)) {
|
|
setEndingSelection(startOfInsertedContent);
|
|
insertParagraphSeparator();
|
|
auto newStart = endingSelection().visibleStart().previous(CannotCrossEditingBoundary, &reachedBoundaryStart);
|
|
if (!reachedBoundaryStart)
|
|
m_startOfInsertedContent = newStart.deepEquivalent();
|
|
}
|
|
}
|
|
|
|
reachedBoundaryStart = false;
|
|
reachedBoundaryEnd = false;
|
|
positionAfterEnd = endOfInsertedContent.next(CannotCrossEditingBoundary, &reachedBoundaryEnd);
|
|
positionBeforeStart = startOfInsertedContent.previous(CannotCrossEditingBoundary, &reachedBoundaryStart);
|
|
|
|
if (!reachedBoundaryEnd && !reachedBoundaryStart) {
|
|
if (!isBlankParagraph(positionAfterEnd) && !isBlankParagraph(endOfInsertedContent) && isStartOfLine(positionAfterEnd) && !isEndOfLine(positionAfterEnd) && !isEndOfEditableOrNonEditableContent(positionAfterEnd)) {
|
|
setEndingSelection(endOfInsertedContent);
|
|
insertParagraphSeparator();
|
|
m_endOfInsertedContent = endingSelection().start();
|
|
}
|
|
}
|
|
}
|
|
|
|
void ReplaceSelectionCommand::addSpacesForSmartReplace()
|
|
{
|
|
VisiblePosition startOfInsertedContent = positionAtStartOfInsertedContent();
|
|
VisiblePosition endOfInsertedContent = positionAtEndOfInsertedContent();
|
|
|
|
Position endUpstream = endOfInsertedContent.deepEquivalent().upstream();
|
|
auto endNode = makeRefPtr(endUpstream.computeNodeBeforePosition());
|
|
int endOffset = is<Text>(endNode) ? downcast<Text>(*endNode).length() : 0;
|
|
if (endUpstream.anchorType() == Position::PositionIsOffsetInAnchor) {
|
|
endNode = endUpstream.containerNode();
|
|
endOffset = endUpstream.offsetInContainerNode();
|
|
}
|
|
|
|
bool needsTrailingSpace = !isEndOfParagraph(endOfInsertedContent) && !isStartOfParagraph(endOfInsertedContent) && !isCharacterSmartReplaceExemptConsideringNonBreakingSpace(endOfInsertedContent.characterAfter(), false);
|
|
if (needsTrailingSpace && endNode) {
|
|
bool collapseWhiteSpace = !endNode->renderer() || endNode->renderer()->style().collapseWhiteSpace();
|
|
if (is<Text>(*endNode)) {
|
|
insertTextIntoNode(downcast<Text>(*endNode), endOffset, collapseWhiteSpace ? nonBreakingSpaceString() : " ");
|
|
if (m_endOfInsertedContent.containerNode() == endNode)
|
|
m_endOfInsertedContent.moveToOffset(m_endOfInsertedContent.offsetInContainerNode() + 1);
|
|
} else {
|
|
auto node = document().createEditingTextNode(collapseWhiteSpace ? nonBreakingSpaceString() : " ");
|
|
insertNodeAfter(node.copyRef(), *endNode);
|
|
updateNodesInserted(node.ptr());
|
|
}
|
|
}
|
|
|
|
document().updateLayout();
|
|
|
|
Position startDownstream = startOfInsertedContent.deepEquivalent().downstream();
|
|
auto startNode = makeRefPtr(startDownstream.computeNodeAfterPosition());
|
|
unsigned startOffset = 0;
|
|
if (startDownstream.anchorType() == Position::PositionIsOffsetInAnchor) {
|
|
startNode = startDownstream.containerNode();
|
|
startOffset = startDownstream.offsetInContainerNode();
|
|
}
|
|
|
|
bool needsLeadingSpace = !isStartOfParagraph(startOfInsertedContent) && !isEndOfParagraph(startOfInsertedContent) && !isCharacterSmartReplaceExemptConsideringNonBreakingSpace(startOfInsertedContent.previous().characterAfter(), true);
|
|
if (needsLeadingSpace && startNode) {
|
|
bool collapseWhiteSpace = !startNode->renderer() || startNode->renderer()->style().collapseWhiteSpace();
|
|
if (is<Text>(*startNode)) {
|
|
insertTextIntoNode(downcast<Text>(*startNode), startOffset, collapseWhiteSpace ? nonBreakingSpaceString() : " ");
|
|
if (m_endOfInsertedContent.containerNode() == startNode && m_endOfInsertedContent.offsetInContainerNode())
|
|
m_endOfInsertedContent.moveToOffset(m_endOfInsertedContent.offsetInContainerNode() + 1);
|
|
} else {
|
|
auto node = document().createEditingTextNode(collapseWhiteSpace ? nonBreakingSpaceString() : " ");
|
|
// Don't updateNodesInserted. Doing so would set m_endOfInsertedContent to be the node containing the leading space,
|
|
// but m_endOfInsertedContent is supposed to mark the end of pasted content.
|
|
insertNodeBefore(node, *startNode);
|
|
m_startOfInsertedContent = firstPositionInNode(node.ptr());
|
|
}
|
|
}
|
|
}
|
|
|
|
void ReplaceSelectionCommand::completeHTMLReplacement(const Position &lastPositionToSelect)
|
|
{
|
|
Position start = positionAtStartOfInsertedContent().deepEquivalent();
|
|
Position end = positionAtEndOfInsertedContent().deepEquivalent();
|
|
|
|
// Mutation events may have deleted start or end
|
|
if (start.isNotNull() && !start.isOrphan() && end.isNotNull() && !end.isOrphan()) {
|
|
// FIXME (11475): Remove this and require that the creator of the fragment to use nbsps.
|
|
rebalanceWhitespaceAt(start);
|
|
rebalanceWhitespaceAt(end);
|
|
|
|
if (m_matchStyle) {
|
|
ASSERT(m_insertionStyle);
|
|
applyStyle(m_insertionStyle.get(), start, end);
|
|
// applyStyle may clone content to new block wrappers and make anchor nodes orphan.
|
|
if (start.isOrphan() || end.isOrphan()) {
|
|
start = endingSelection().start();
|
|
end = endingSelection().end();
|
|
m_startOfInsertedContent = start;
|
|
m_endOfInsertedContent = end;
|
|
}
|
|
}
|
|
|
|
if (lastPositionToSelect.isNotNull())
|
|
end = lastPositionToSelect;
|
|
|
|
mergeTextNodesAroundPosition(start, end);
|
|
mergeTextNodesAroundPosition(end, start);
|
|
} else if (lastPositionToSelect.isNotNull())
|
|
start = end = lastPositionToSelect;
|
|
else
|
|
return;
|
|
|
|
if (AXObjectCache::accessibilityEnabled() && editingAction() == EditAction::Paste)
|
|
m_visibleSelectionForInsertedText = VisibleSelection(start, end);
|
|
|
|
if (m_selectReplacement)
|
|
setEndingSelection(VisibleSelection(start, end, VisibleSelection::defaultAffinity, endingSelection().isDirectional()));
|
|
else
|
|
setEndingSelection(VisibleSelection(end, VisibleSelection::defaultAffinity, endingSelection().isDirectional()));
|
|
}
|
|
|
|
void ReplaceSelectionCommand::mergeTextNodesAroundPosition(Position& position, Position& positionOnlyToBeUpdated)
|
|
{
|
|
bool positionIsOffsetInAnchor = position.anchorType() == Position::PositionIsOffsetInAnchor;
|
|
bool positionOnlyToBeUpdatedIsOffsetInAnchor = positionOnlyToBeUpdated.anchorType() == Position::PositionIsOffsetInAnchor;
|
|
RefPtr<Text> text;
|
|
if (positionIsOffsetInAnchor && is<Text>(position.containerNode()))
|
|
text = downcast<Text>(position.containerNode());
|
|
else {
|
|
if (auto* before = position.computeNodeBeforePosition(); is<Text>(before))
|
|
text = downcast<Text>(before);
|
|
else if (auto* after = position.computeNodeAfterPosition(); is<Text>(after))
|
|
text = downcast<Text>(after);
|
|
}
|
|
if (!text)
|
|
return;
|
|
|
|
if (auto* previousSibling = text->previousSibling(); is<Text>(previousSibling)) {
|
|
auto previous = makeRef(downcast<Text>(*previousSibling));
|
|
insertTextIntoNode(*text, 0, previous->data());
|
|
|
|
if (positionIsOffsetInAnchor)
|
|
position.moveToOffset(previous->length() + position.offsetInContainerNode());
|
|
else
|
|
updatePositionForNodeRemoval(position, previous.get());
|
|
|
|
if (positionOnlyToBeUpdatedIsOffsetInAnchor) {
|
|
if (positionOnlyToBeUpdated.containerNode() == text)
|
|
positionOnlyToBeUpdated.moveToOffset(previous->length() + positionOnlyToBeUpdated.offsetInContainerNode());
|
|
else if (positionOnlyToBeUpdated.containerNode() == previous.ptr())
|
|
positionOnlyToBeUpdated.moveToPosition(text.get(), positionOnlyToBeUpdated.offsetInContainerNode());
|
|
} else
|
|
updatePositionForNodeRemoval(positionOnlyToBeUpdated, previous.get());
|
|
|
|
removeNode(previous);
|
|
}
|
|
if (auto* nextSibling = text->nextSibling(); is<Text>(nextSibling)) {
|
|
auto next = makeRef(downcast<Text>(*nextSibling));
|
|
unsigned originalLength = text->length();
|
|
insertTextIntoNode(*text, originalLength, next->data());
|
|
|
|
if (!positionIsOffsetInAnchor)
|
|
updatePositionForNodeRemoval(position, next.get());
|
|
|
|
if (positionOnlyToBeUpdatedIsOffsetInAnchor && positionOnlyToBeUpdated.containerNode() == next.ptr())
|
|
positionOnlyToBeUpdated.moveToPosition(text.get(), originalLength + positionOnlyToBeUpdated.offsetInContainerNode());
|
|
else
|
|
updatePositionForNodeRemoval(positionOnlyToBeUpdated, next.get());
|
|
|
|
removeNode(next);
|
|
}
|
|
}
|
|
|
|
static HTMLElement* singleChildList(HTMLElement& element)
|
|
{
|
|
if (!element.hasOneChild())
|
|
return nullptr;
|
|
|
|
auto child = makeRefPtr(element.firstChild());
|
|
return isListHTMLElement(child.get()) ? &downcast<HTMLElement>(*child) : nullptr;
|
|
}
|
|
|
|
static HTMLElement& deepestSingleChildList(HTMLElement& topLevelList)
|
|
{
|
|
auto list = makeRefPtr(topLevelList);
|
|
while (auto childList = singleChildList(*list))
|
|
list = childList;
|
|
return *list;
|
|
}
|
|
|
|
// If the user is inserting a list into an existing list, instead of nesting the list,
|
|
// we put the list items into the existing list.
|
|
Node* ReplaceSelectionCommand::insertAsListItems(HTMLElement& passedListElement, Node* insertionBlock, const Position& insertPos, InsertedNodes& insertedNodes)
|
|
{
|
|
Ref<HTMLElement> listElement = deepestSingleChildList(passedListElement);
|
|
|
|
bool isStart = isStartOfParagraph(insertPos);
|
|
bool isEnd = isEndOfParagraph(insertPos);
|
|
bool isMiddle = !isStart && !isEnd;
|
|
auto lastNode = makeRefPtr(insertionBlock);
|
|
|
|
// If we're in the middle of a list item, we should split it into two separate
|
|
// list items and insert these nodes between them.
|
|
if (isMiddle) {
|
|
int textNodeOffset = insertPos.offsetInContainerNode();
|
|
if (is<Text>(*insertPos.deprecatedNode()) && textNodeOffset > 0)
|
|
splitTextNode(downcast<Text>(*insertPos.deprecatedNode()), textNodeOffset);
|
|
splitTreeToNode(*insertPos.deprecatedNode(), *lastNode, true);
|
|
}
|
|
|
|
while (RefPtr<Node> listItem = listElement->firstChild()) {
|
|
listElement->removeChild(*listItem);
|
|
if (isStart || isMiddle) {
|
|
insertNodeBefore(*listItem, *lastNode);
|
|
insertedNodes.respondToNodeInsertion(listItem.get());
|
|
} else if (isEnd) {
|
|
insertNodeAfter(*listItem, *lastNode);
|
|
insertedNodes.respondToNodeInsertion(listItem.get());
|
|
lastNode = listItem.get();
|
|
} else
|
|
ASSERT_NOT_REACHED();
|
|
}
|
|
if ((isStart || isMiddle) && lastNode->previousSibling())
|
|
lastNode = lastNode->previousSibling();
|
|
return lastNode.get();
|
|
}
|
|
|
|
void ReplaceSelectionCommand::updateNodesInserted(Node *node)
|
|
{
|
|
if (!node)
|
|
return;
|
|
|
|
if (m_startOfInsertedContent.isNull())
|
|
m_startOfInsertedContent = firstPositionInOrBeforeNode(node);
|
|
|
|
m_endOfInsertedContent = lastPositionInOrAfterNode(node->lastDescendant());
|
|
}
|
|
|
|
ReplacementFragment* ReplaceSelectionCommand::ensureReplacementFragment()
|
|
{
|
|
if (!m_replacementFragment)
|
|
m_replacementFragment = makeUnique<ReplacementFragment>(m_documentFragment.get(), endingSelection());
|
|
return m_replacementFragment.get();
|
|
}
|
|
|
|
// During simple pastes, where we're just pasting a text node into a run of text, we insert the text node
|
|
// directly into the text node that holds the selection. This is much faster than the generalized code in
|
|
// ReplaceSelectionCommand, and works around <https://bugs.webkit.org/show_bug.cgi?id=6148> since we don't
|
|
// split text nodes.
|
|
bool ReplaceSelectionCommand::performTrivialReplace(const ReplacementFragment& fragment)
|
|
{
|
|
if (!is<Text>(fragment.firstChild()) || fragment.firstChild() != fragment.lastChild())
|
|
return false;
|
|
auto textNode = makeRef(downcast<Text>(*fragment.firstChild()));
|
|
|
|
// FIXME: Would be nice to handle smart replace in the fast path.
|
|
if (m_smartReplace || fragment.hasInterchangeNewlineAtStart() || fragment.hasInterchangeNewlineAtEnd())
|
|
return false;
|
|
|
|
// e.g. when "bar" is inserted after "foo" in <div><u>foo</u></div>, "bar" should not be underlined.
|
|
if (nodeToSplitToAvoidPastingIntoInlineNodesWithStyle(endingSelection().start()))
|
|
return false;
|
|
|
|
RefPtr<Node> nodeAfterInsertionPos = endingSelection().end().downstream().anchorNode();
|
|
// Our fragment creation code handles tabs, spaces, and newlines, so we don't have to worry about those here.
|
|
|
|
Position start = endingSelection().start();
|
|
Position end = replaceSelectedTextInNode(textNode->data());
|
|
if (end.isNull())
|
|
return false;
|
|
|
|
if (nodeAfterInsertionPos && nodeAfterInsertionPos->parentNode() && nodeAfterInsertionPos->hasTagName(brTag)
|
|
&& shouldRemoveEndBR(nodeAfterInsertionPos.get(), positionBeforeNode(nodeAfterInsertionPos.get())))
|
|
removeNodeAndPruneAncestors(*nodeAfterInsertionPos);
|
|
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VisibleSelection selectionAfterReplace(m_selectReplacement ? start : end, end);
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if (AXObjectCache::accessibilityEnabled() && editingAction() == EditAction::Paste)
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m_visibleSelectionForInsertedText = VisibleSelection(start, end);
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setEndingSelection(selectionAfterReplace);
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return true;
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}
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std::optional<SimpleRange> ReplaceSelectionCommand::insertedContentRange() const
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{
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return makeSimpleRange(m_startOfInsertedContent, m_endOfInsertedContent);
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}
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} // namespace WebCore
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