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/*
* Copyright (C) 2005, 2006, 2008 Apple 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 COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CompositeEditCommand_h
#define CompositeEditCommand_h
#include "EditCommand.h"
#include "CSSPropertyNames.h"
#include "UndoStep.h"
#include <wtf/Vector.h>
namespace WebCore {
class EditingStyle;
class HTMLElement;
class StyledElement;
class Text;
class EditCommandComposition : public UndoStep {
public:
static PassRefPtr<EditCommandComposition> create(Document*, const VisibleSelection&, const VisibleSelection&, EditAction);
virtual void unapply() OVERRIDE;
virtual void reapply() OVERRIDE;
EditAction editingAction() const OVERRIDE { return m_editAction; }
void append(SimpleEditCommand*);
bool wasCreateLinkCommand() const { return m_editAction == EditActionCreateLink; }
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(); }
#ifndef NDEBUG
virtual void getNodesInCommand(HashSet<Node*>&);
#endif
private:
EditCommandComposition(Document*, const VisibleSelection& startingSelection, const VisibleSelection& endingSelection, EditAction);
RefPtr<Document> m_document;
VisibleSelection m_startingSelection;
VisibleSelection m_endingSelection;
Vector<RefPtr<SimpleEditCommand> > m_commands;
RefPtr<Element> m_startingRootEditableElement;
RefPtr<Element> m_endingRootEditableElement;
EditAction m_editAction;
};
class CompositeEditCommand : public EditCommand {
public:
virtual ~CompositeEditCommand();
void apply();
bool isFirstCommand(EditCommand* command) { return !m_commands.isEmpty() && m_commands.first() == command; }
EditCommandComposition* composition() { return m_composition.get(); }
EditCommandComposition* ensureComposition();
virtual bool isCreateLinkCommand() const;
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; }
protected:
explicit CompositeEditCommand(Document*);
//
// sugary-sweet convenience functions to help create and apply edit commands in composite commands
//
void appendNode(PassRefPtr<Node>, PassRefPtr<ContainerNode> parent);
void applyCommandToComposite(PassRefPtr<EditCommand>);
void applyCommandToComposite(PassRefPtr<CompositeEditCommand>, const VisibleSelection&);
void applyStyle(const EditingStyle*, EditAction = EditActionChangeAttributes);
void applyStyle(const EditingStyle*, const Position& start, const Position& end, EditAction = EditActionChangeAttributes);
void applyStyledElement(PassRefPtr<Element>);
void removeStyledElement(PassRefPtr<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(PassRefPtr<Text>, unsigned offset, unsigned count);
bool isRemovableBlock(const Node*);
void insertNodeAfter(PassRefPtr<Node>, PassRefPtr<Node> refChild);
void insertNodeAt(PassRefPtr<Node>, const Position&);
void insertNodeAtTabSpanPosition(PassRefPtr<Node>, const Position&);
void insertNodeBefore(PassRefPtr<Node>, PassRefPtr<Node> refChild, ShouldAssumeContentIsAlwaysEditable = DoNotAssumeContentIsAlwaysEditable);
void insertParagraphSeparator(bool useDefaultParagraphElement = false, bool pasteBlockqutoeIntoUnquotedArea = false);
void insertLineBreak();
void insertTextIntoNode(PassRefPtr<Text>, unsigned offset, const String& text);
void mergeIdenticalElements(PassRefPtr<Element>, PassRefPtr<Element>);
void rebalanceWhitespace();
void rebalanceWhitespaceAt(const Position&);
void rebalanceWhitespaceOnTextSubstring(PassRefPtr<Text>, int startOffset, int endOffset);
void prepareWhitespaceAtPositionForSplit(Position&);
bool canRebalance(const Position&) const;
bool shouldRebalanceLeadingWhitespaceFor(const String&) const;
void removeCSSProperty(PassRefPtr<StyledElement>, CSSPropertyID);
void removeNodeAttribute(PassRefPtr<Element>, const QualifiedName& attribute);
void removeChildrenInRange(PassRefPtr<Node>, unsigned from, unsigned to);
virtual void removeNode(PassRefPtr<Node>, ShouldAssumeContentIsAlwaysEditable = DoNotAssumeContentIsAlwaysEditable);
HTMLElement* replaceElementWithSpanPreservingChildrenAndAttributes(PassRefPtr<HTMLElement>);
void removeNodePreservingChildren(PassRefPtr<Node>, ShouldAssumeContentIsAlwaysEditable = DoNotAssumeContentIsAlwaysEditable);
void removeNodeAndPruneAncestors(PassRefPtr<Node>);
void moveRemainingSiblingsToNewParent(Node*, Node* pastLastNodeToMove, PassRefPtr<Element> prpNewParent);
void updatePositionForNodeRemovalPreservingChildren(Position&, Node*);
void prune(PassRefPtr<Node>);
void replaceTextInNode(PassRefPtr<Text>, unsigned offset, unsigned count, const String& replacementText);
Position replaceSelectedTextInNode(const String&);
void replaceTextInNodePreservingMarkers(PassRefPtr<Text>, unsigned offset, unsigned count, const String& replacementText);
Position positionOutsideTabSpan(const Position&);
void setNodeAttribute(PassRefPtr<Element>, const QualifiedName& attribute, const AtomicString& value);
void splitElement(PassRefPtr<Element>, PassRefPtr<Node> atChild);
void splitTextNode(PassRefPtr<Text>, unsigned offset);
void splitTextNodeContainingElement(PassRefPtr<Text>, unsigned offset);
void wrapContentsInDummySpan(PassRefPtr<Element>);
void deleteInsignificantText(PassRefPtr<Text>, unsigned start, unsigned end);
void deleteInsignificantText(const Position& start, const Position& end);
void deleteInsignificantTextDownstream(const Position&);
PassRefPtr<Node> appendBlockPlaceholder(PassRefPtr<Element>);
PassRefPtr<Node> insertBlockPlaceholder(const Position&);
PassRefPtr<Node> addBlockPlaceholderIfNeeded(Element*);
void removePlaceholderAt(const Position&);
PassRefPtr<Node> insertNewDefaultParagraphElementAt(const Position&);
PassRefPtr<Node> moveParagraphContentsToNewBlockIfNecessary(const Position&);
void pushAnchorElementDown(Node*);
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(Position& start, Position& end, Node* outerNode, Element* blockElement);
void cleanupAfterDeletion(VisiblePosition destination = VisiblePosition());
bool breakOutOfEmptyListItem();
bool breakOutOfEmptyMailBlockquotedParagraph();
Position positionAvoidingSpecialElementBoundary(const Position&);
PassRefPtr<Node> splitTreeToNode(Node*, Node*, bool splitAncestor = false);
Vector<RefPtr<EditCommand> > m_commands;
private:
bool isCompositeEditCommand() const OVERRIDE { return true; }
RefPtr<EditCommandComposition> m_composition;
};
void applyCommand(PassRefPtr<CompositeEditCommand>);
inline CompositeEditCommand* toCompositeEditCommand(EditCommand* command)
{
ASSERT(command);
ASSERT(command->isCompositeEditCommand());
return static_cast<CompositeEditCommand*>(command);
}
} // namespace WebCore
#endif // CompositeEditCommand_h
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