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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 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.
*/
#ifndef EditCommand_h
#define EditCommand_h
#include "AXTextStateChangeIntent.h"
#include "EditAction.h"
#include "VisibleSelection.h"
#ifndef NDEBUG
#include <wtf/HashSet.h>
#endif
namespace WebCore {
class CompositeEditCommand;
class Document;
class Element;
class Frame;
class EditCommand : public RefCounted<EditCommand> {
public:
virtual ~EditCommand();
void setParent(CompositeEditCommand*);
EditAction editingAction() const;
const VisibleSelection& startingSelection() const { return m_startingSelection; }
const VisibleSelection& endingSelection() const { return m_endingSelection; }
virtual bool isInsertTextCommand() const { return false; }
virtual bool isSimpleEditCommand() const { return false; }
virtual bool isCompositeEditCommand() const { return false; }
virtual bool isEditCommandComposition() const { return false; }
bool isTopLevelCommand() const { return !m_parent; }
virtual void doApply() = 0;
AXTextEditType applyEditType() const;
AXTextEditType unapplyEditType() const;
bool shouldPostAccessibilityNotification() const;
protected:
explicit EditCommand(Document&, EditAction = EditActionUnspecified);
EditCommand(Document&, const VisibleSelection&, const VisibleSelection&);
Frame& frame();
Document& document() { return m_document; }
CompositeEditCommand* parent() const { return m_parent; }
void setStartingSelection(const VisibleSelection&);
WEBCORE_EXPORT void setEndingSelection(const VisibleSelection&);
private:
Ref<Document> m_document;
VisibleSelection m_startingSelection;
VisibleSelection m_endingSelection;
CompositeEditCommand* m_parent { nullptr };
EditAction m_editingAction { EditActionUnspecified };
};
enum ShouldAssumeContentIsAlwaysEditable {
AssumeContentIsAlwaysEditable,
DoNotAssumeContentIsAlwaysEditable,
};
class SimpleEditCommand : public EditCommand {
public:
virtual void doUnapply() = 0;
virtual void doReapply(); // calls doApply()
#ifndef NDEBUG
virtual void getNodesInCommand(HashSet<Node*>&) = 0;
#endif
protected:
explicit SimpleEditCommand(Document&, EditAction = EditActionUnspecified);
#ifndef NDEBUG
void addNodeAndDescendants(Node*, HashSet<Node*>&);
#endif
virtual void notifyAccessibilityForTextChange(Node*, AXTextEditType, const String&, const VisiblePosition&);
private:
virtual bool isSimpleEditCommand() const override { return true; }
};
inline SimpleEditCommand* toSimpleEditCommand(EditCommand* command)
{
ASSERT(command);
ASSERT_WITH_SECURITY_IMPLICATION(command->isSimpleEditCommand());
return static_cast<SimpleEditCommand*>(command);
}
} // namespace WebCore
#endif // EditCommand_h
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