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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 THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_COMMANDS_EDIT_COMMAND_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_COMMANDS_EDIT_COMMAND_H_
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/events/input_event.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/wtf/casting.h"
namespace blink {
class CompositeEditCommand;
class Document;
class EditingState;
class CORE_EXPORT EditCommand : public GarbageCollected<EditCommand> {
public:
virtual ~EditCommand();
virtual void SetParent(CompositeEditCommand*);
virtual InputEvent::InputType GetInputType() const;
virtual bool IsSimpleEditCommand() const { return false; }
virtual bool IsCompositeEditCommand() const { return false; }
bool IsTopLevelCommand() const { return !parent_; }
// The |EditingState*| argument must not be nullptr.
virtual void DoApply(EditingState*) = 0;
// |TypingCommand| will return the text of the last |commands_|.
virtual String TextDataForInputEvent() const;
virtual void Trace(Visitor*) const;
bool SelectionIsDirectional() const { return selection_is_directional_; }
void SetSelectionIsDirectional(bool is_directional) {
selection_is_directional_ = is_directional;
}
protected:
explicit EditCommand(Document&);
Document& GetDocument() const { return *document_.Get(); }
CompositeEditCommand* Parent() const { return parent_; }
static bool IsRenderedCharacter(const Position&);
private:
Member<Document> document_;
Member<CompositeEditCommand> parent_;
bool selection_is_directional_ = false;
};
enum ShouldAssumeContentIsAlwaysEditable {
kAssumeContentIsAlwaysEditable,
kDoNotAssumeContentIsAlwaysEditable,
};
class CORE_EXPORT 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; }
};
template <>
struct DowncastTraits<SimpleEditCommand> {
static bool AllowFrom(const EditCommand& command) {
return command.IsSimpleEditCommand();
}
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_COMMANDS_EDIT_COMMAND_H_
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