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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 EditCommand_h
#define EditCommand_h
#include "core/CoreExport.h"
#include "core/editing/VisibleSelection.h"
#include "core/events/InputEvent.h"
#include "platform/heap/Handle.h"
namespace blink {
class CompositeEditCommand;
class Document;
class EditingState;
class CORE_EXPORT EditCommand : public GarbageCollectedFinalized<EditCommand> {
public:
virtual ~EditCommand();
virtual void setParent(CompositeEditCommand*);
virtual InputEvent::InputType inputType() const;
virtual bool isSimpleEditCommand() const { return false; }
virtual bool isCompositeEditCommand() const { return false; }
bool isTopLevelCommand() const { return !m_parent; }
// The |EditingState*| argument must not be nullptr.
virtual void doApply(EditingState*) = 0;
// |TypingCommand| will return the text of the last |m_commands|.
virtual String textDataForInputEvent() const;
DECLARE_VIRTUAL_TRACE();
protected:
explicit EditCommand(Document&);
Document& document() const { return *m_document.get(); }
CompositeEditCommand* parent() const { return m_parent; }
// TODO(yosin) |isRenderedCharacter()| should be removed, and we should use
// |VisiblePosition::characterAfter()| and
// |VisiblePosition::characterBefore()|.
static bool isRenderedCharacter(const Position&);
private:
Member<Document> m_document;
Member<CompositeEditCommand> m_parent;
};
enum ShouldAssumeContentIsAlwaysEditable {
AssumeContentIsAlwaysEditable,
DoNotAssumeContentIsAlwaysEditable,
};
class SimpleEditCommand : public EditCommand {
public:
virtual void doUnapply() = 0;
virtual void doReapply(); // calls doApply()
protected:
explicit SimpleEditCommand(Document& document) : EditCommand(document) {}
private:
bool isSimpleEditCommand() const final { return true; }
};
DEFINE_TYPE_CASTS(SimpleEditCommand,
EditCommand,
command,
command->isSimpleEditCommand(),
command.isSimpleEditCommand());
} // namespace blink
#endif // EditCommand_h
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