undo_stack.cc | Explore in Territory

/*
 * Copyright (C) 2006, 2007 Apple, Inc.  All rights reserved.
 * Copyright (C) 2012 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:
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 *    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
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#include "third_party/blink/renderer/core/editing/commands/undo_stack.h"

#include "base/auto_reset.h"
#include "third_party/blink/renderer/core/dom/container_node.h"
#include "third_party/blink/renderer/core/editing/commands/undo_step.h"

namespace blink {

// Arbitrary depth limit for the undo stack, to keep it from using
// unbounded memory. This is the maximum number of distinct undoable
// actions -- unbroken stretches of typed characters are coalesced
// into a single action.
static const size_t kMaximumUndoStackDepth = …;

UndoStack::UndoStack() = default;

void UndoStack::RegisterUndoStep(UndoStep* step) { … }

void UndoStack::RegisterRedoStep(UndoStep* step) { … }

bool UndoStack::CanUndo() const { … }

bool UndoStack::CanRedo() const { … }

void UndoStack::Undo() { … }

void UndoStack::Redo() { … }

void UndoStack::Clear() { … }

void UndoStack::Trace(Visitor* visitor) const { … }

UndoStack::UndoStepRange::UndoStepRange(const UndoStepStack& steps)
    : … { … }

UndoStack::UndoStepRange UndoStack::RedoSteps() const { … }

UndoStack::UndoStepRange UndoStack::UndoSteps() const { … }

void UndoStack::DidSetEndingSelection(UndoStep* step) { … }

void UndoStack::ElementRemoved(Element* element) { … }

}  // namespace blink
chromium/third_party/blink/renderer/core/editing/commands/undo_stack.cc
