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/*
* Copyright (C) 2005-2022 Apple Inc. All rights reserved.
* Copyright (C) 2013 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "AXObjectCache.h"
#include "EditCommand.h"
#include "CSSPropertyNames.h"
#include "UndoStep.h"
#include <wtf/TZoneMalloc.h>
#include <wtf/Vector.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
class EditingStyle;
class DataTransfer;
class HTMLElement;
class StaticRange;
class StyledElement;
class Text;
class AccessibilityUndoReplacedText {
WTF_MAKE_TZONE_ALLOCATED(AccessibilityUndoReplacedText);
public:
AccessibilityUndoReplacedText() { }
void configureRangeDeletedByReapplyWithStartingSelection(const VisibleSelection&);
void configureRangeDeletedByReapplyWithEndingSelection(const VisibleSelection&);
void setRangeDeletedByUnapply(const VisiblePositionIndexRange&);
void captureTextForUnapply();
void captureTextForReapply();
void postTextStateChangeNotificationForUnapply(AXObjectCache*);
void postTextStateChangeNotificationForReapply(AXObjectCache*);
private:
int indexForVisiblePosition(const VisiblePosition&, RefPtr<ContainerNode>&) const;
String textDeletedByUnapply();
String textDeletedByReapply();
String m_replacedText;
VisiblePositionIndexRange m_rangeDeletedByUnapply;
VisiblePositionIndexRange m_rangeDeletedByReapply;
};
enum class ApplyStylePropertyLevel : bool { Default, ForceBlock };
class EditCommandComposition : public UndoStep {
public:
enum class AddToUndoStack : bool {
No, Yes
};
static Ref<EditCommandComposition> create(Document&, const VisibleSelection& startingSelection, const VisibleSelection& endingSelection, EditAction);
void unapply() override;
void unapply(AddToUndoStack);
void reapply() override;
EditAction editingAction() const override { return m_editAction; }
void append(SimpleEditCommand*);
bool wasCreateLinkCommand() const { return m_editAction == EditAction::CreateLink; }
const VisibleSelection& startingSelection() const { return m_startingSelection; }
const VisibleSelection& endingSelection() const { return m_endingSelection; }
void setStartingSelection(const VisibleSelection&);
void setEndingSelection(const VisibleSelection&);
Element* startingRootEditableElement() const { return m_startingRootEditableElement.get(); }
Element* endingRootEditableElement() const { return m_endingRootEditableElement.get(); }
void setRangeDeletedByUnapply(const VisiblePositionIndexRange&);
#ifndef NDEBUG
virtual void getNodesInCommand(NodeSet&);
#endif
private:
EditCommandComposition(Document&, const VisibleSelection& startingSelection, const VisibleSelection& endingSelection, EditAction);
String label() const final;
void didRemoveFromUndoManager() final { }
bool areRootEditabledElementsConnected();
RefPtr<Document> protectedDocument() const { return m_document; }
RefPtr<Document> m_document;
VisibleSelection m_startingSelection;
VisibleSelection m_endingSelection;
Vector<RefPtr<SimpleEditCommand>> m_commands;
RefPtr<Element> m_startingRootEditableElement;
RefPtr<Element> m_endingRootEditableElement;
AccessibilityUndoReplacedText m_replacedText;
EditAction m_editAction;
};
class CompositeEditCommand : public EditCommand, public CanMakeWeakPtr<CompositeEditCommand> {
public:
virtual ~CompositeEditCommand();
void apply();
bool isFirstCommand(EditCommand* command) { return !m_commands.isEmpty() && m_commands.first() == command; }
EditCommandComposition* composition() const;
RefPtr<EditCommandComposition> protectedComposition() const { return composition(); }
EditCommandComposition& ensureComposition();
virtual bool isTypingCommand() const;
virtual bool isDictationCommand() const { return false; }
virtual bool preservesTypingStyle() const;
virtual bool shouldRetainAutocorrectionIndicator() const;
virtual void setShouldRetainAutocorrectionIndicator(bool);
virtual bool shouldStopCaretBlinking() const { return false; }
virtual AtomString inputEventTypeName() const;
virtual bool isInputMethodComposing() const;
virtual String inputEventData() const { return { }; }
virtual bool isBeforeInputEventCancelable() const { return true; }
virtual bool shouldDispatchInputEvents() const { return true; }
Vector<RefPtr<StaticRange>> targetRangesForBindings() const;
virtual RefPtr<DataTransfer> inputEventDataTransfer() const;
protected:
explicit CompositeEditCommand(Ref<Document>&&, EditAction = EditAction::Unspecified);
// If willApplyCommand returns false, we won't proceed with applying the command.
virtual bool willApplyCommand();
virtual void didApplyCommand();
virtual Vector<RefPtr<StaticRange>> targetRanges() const;
//
// sugary-sweet convenience functions to help create and apply edit commands in composite commands
//
void appendNode(Ref<Node>&&, Ref<ContainerNode>&& parent);
void applyCommandToComposite(Ref<EditCommand>&&);
void applyCommandToComposite(Ref<CompositeEditCommand>&&, const VisibleSelection&);
void applyStyle(const EditingStyle*, EditAction = EditAction::ChangeAttributes);
void applyStyle(const EditingStyle*, const Position& start, const Position& end, EditAction = EditAction::ChangeAttributes, ApplyStylePropertyLevel = ApplyStylePropertyLevel::Default);
void applyStyledElement(Ref<Element>&&);
void removeStyledElement(Ref<Element>&&);
void deleteSelection(bool smartDelete = false, bool mergeBlocksAfterDelete = true, bool replace = false, bool expandForSpecialElements = true, bool sanitizeMarkup = true);
void deleteSelection(const VisibleSelection&, bool smartDelete = false, bool mergeBlocksAfterDelete = true, bool replace = false, bool expandForSpecialElements = true, bool sanitizeMarkup = true);
virtual void deleteTextFromNode(Text&, unsigned offset, unsigned count);
void inputText(const String&, bool selectInsertedText = false);
bool isRemovableBlock(const Node*);
void insertNodeAfter(Ref<Node>&&, Node& refChild);
void insertNodeAt(Ref<Node>&&, const Position&);
void insertNodeAtTabSpanPosition(Ref<Node>&&, const Position&);
bool insertNodeBefore(Ref<Node>&&, Node& refChild, ShouldAssumeContentIsAlwaysEditable = DoNotAssumeContentIsAlwaysEditable);
void insertParagraphSeparatorAtPosition(const Position&, bool useDefaultParagraphElement = false, bool pasteBlockqutoeIntoUnquotedArea = false);
void insertParagraphSeparator(bool useDefaultParagraphElement = false, bool pasteBlockqutoeIntoUnquotedArea = false);
void insertLineBreak();
void insertTextIntoNode(Text&, unsigned offset, const String& text);
void mergeIdenticalElements(Element&, Element&);
void rebalanceWhitespace();
void rebalanceWhitespaceAt(const Position&);
void rebalanceWhitespaceOnTextSubstring(Text&, int startOffset, int endOffset);
void prepareWhitespaceAtPositionForSplit(Position&);
void replaceCollapsibleWhitespaceWithNonBreakingSpaceIfNeeded(const VisiblePosition&);
RefPtr<Text> textNodeForRebalance(const Position&) const;
bool shouldRebalanceLeadingWhitespaceFor(const String&) const;
void removeNodeAttribute(Element&, const QualifiedName& attribute);
void removeChildrenInRange(Node&, unsigned from, unsigned to);
virtual void removeNode(Node&, ShouldAssumeContentIsAlwaysEditable = DoNotAssumeContentIsAlwaysEditable);
RefPtr<HTMLElement> replaceElementWithSpanPreservingChildrenAndAttributes(HTMLElement&);
void removeNodePreservingChildren(Node&, ShouldAssumeContentIsAlwaysEditable = DoNotAssumeContentIsAlwaysEditable);
void removeNodeAndPruneAncestors(Node&);
void moveRemainingSiblingsToNewParent(Node*, Node* pastLastNodeToMove, Element& newParent);
void updatePositionForNodeRemovalPreservingChildren(Position&, Node&);
void prune(Node*);
void replaceTextInNode(Text&, unsigned offset, unsigned count, const String& replacementText);
Position replaceSelectedTextInNode(const String&);
void replaceTextInNodePreservingMarkers(Text&, unsigned offset, unsigned count, const String& replacementText);
Position positionOutsideTabSpan(const Position&);
void setNodeAttribute(Element&, const QualifiedName& attribute, const AtomString& value);
void splitElement(Element&, Node& atChild);
void splitTextNode(Text&, unsigned offset);
void splitTextNodeContainingElement(Text&, unsigned offset);
void wrapContentsInDummySpan(Element&);
void deleteInsignificantText(Text&, unsigned start, unsigned end);
void deleteInsignificantText(const Position& start, const Position& end);
void deleteInsignificantTextDownstream(const Position&);
RefPtr<Element> appendBlockPlaceholder(Ref<Element>&&);
RefPtr<Node> insertBlockPlaceholder(const Position&);
RefPtr<Node> addBlockPlaceholderIfNeeded(Element*);
void removePlaceholderAt(const Position&);
Ref<HTMLElement> insertNewDefaultParagraphElementAt(const Position&);
RefPtr<Node> moveParagraphContentsToNewBlockIfNecessary(const Position&);
void pushAnchorElementDown(Element&);
void moveParagraph(const VisiblePosition&, const VisiblePosition&, const VisiblePosition&, bool preserveSelection = false, bool preserveStyle = true);
void moveParagraphs(const VisiblePosition&, const VisiblePosition&, const VisiblePosition&, bool preserveSelection = false, bool preserveStyle = true);
void moveParagraphWithClones(const VisiblePosition& startOfParagraphToMove, const VisiblePosition& endOfParagraphToMove, Element* blockElement, Node* outerNode);
void cloneParagraphUnderNewElement(const Position& start, const Position& end, Node* outerNode, Element* blockElement);
void cleanupAfterDeletion(VisiblePosition destination = VisiblePosition());
VisibleSelection shouldBreakOutOfEmptyListItem() const;
bool breakOutOfEmptyListItem();
bool breakOutOfEmptyMailBlockquotedParagraph();
Position positionAvoidingSpecialElementBoundary(const Position&);
RefPtr<Node> splitTreeToNode(Node&, Node&, bool splitAncestor = false);
Vector<RefPtr<EditCommand>> m_commands;
private:
bool isCompositeEditCommand() const override { return true; }
RefPtr<EditCommandComposition> m_composition;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::CompositeEditCommand)
static bool isType(const WebCore::EditCommand& command) { return command.isCompositeEditCommand(); }
SPECIALIZE_TYPE_TRAITS_END()
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