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/*
* Copyright (C) 2011 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER 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_UNDO_STEP_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_COMMANDS_UNDO_STEP_H_
#include "third_party/blink/renderer/core/editing/commands/selection_for_undo_step.h"
#include "third_party/blink/renderer/core/events/input_event.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
namespace blink {
class SimpleEditCommand;
class UndoStep final : public GarbageCollected<UndoStep> {
public:
UndoStep(Document*,
const SelectionForUndoStep& starting_selection,
const SelectionForUndoStep& ending_selection);
// Returns true if associated root editable elements are connected.
bool IsConnected() const;
void Unapply();
void Reapply();
void Append(SimpleEditCommand*);
void Append(UndoStep*);
Document& GetDocument() const { return *document_; }
const SelectionForUndoStep& StartingSelection() const {
return starting_selection_;
}
const SelectionForUndoStep& EndingSelection() const {
return ending_selection_;
}
bool SelectionIsDirectional() const { return selection_is_directional_; }
void SetStartingSelection(const SelectionForUndoStep&);
void SetEndingSelection(const SelectionForUndoStep&);
void SetSelectionIsDirectional(bool is_directional) {
selection_is_directional_ = is_directional;
}
Element* StartingRootEditableElement() const {
return starting_selection_.RootEditableElement();
}
Element* EndingRootEditableElement() const {
return ending_selection_.RootEditableElement();
}
uint64_t SequenceNumber() const { return sequence_number_; }
void Trace(Visitor*) const;
private:
Member<Document> document_;
SelectionForUndoStep starting_selection_;
SelectionForUndoStep ending_selection_;
HeapVector<Member<SimpleEditCommand>> commands_;
const uint64_t sequence_number_;
bool selection_is_directional_ = false;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_COMMANDS_UNDO_STEP_H_
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