Move execCommand related files in core/editing/ related files into core/editing/commands/

Source/core/editing/UndoStack.cpp

Index: Source/core/editing/UndoStack.cpp
diff --git a/Source/core/editing/UndoStack.cpp b/Source/core/editing/UndoStack.cpp
deleted file mode 100644
index a339ec8f8a0e1ba04b78f8156c15c277378fe838..0000000000000000000000000000000000000000
--- a/Source/core/editing/UndoStack.cpp
+++ /dev/null
@@ -1,129 +0,0 @@
-/*
- * 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:
- * 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.
- */
-
-#include "config.h"
-#include "core/editing/UndoStack.h"
-
-#include "core/dom/ContainerNode.h"
-#include "core/editing/UndoStep.h"
-#include "platform/EventDispatchForbiddenScope.h"
-#include "wtf/TemporaryChange.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 maximumUndoStackDepth = 1000;
-
-UndoStack::UndoStack()
-    : m_inRedo(false)
-{
-}
-
-DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(UndoStack)
-
-PassOwnPtrWillBeRawPtr<UndoStack> UndoStack::create()
-{
-    return adoptPtrWillBeNoop(new UndoStack());
-}
-
-void UndoStack::registerUndoStep(PassRefPtrWillBeRawPtr<UndoStep> step)
-{
-    if (m_undoStack.size() == maximumUndoStackDepth)
-        m_undoStack.removeFirst(); // drop oldest item off the far end
-    if (!m_inRedo)
-        m_redoStack.clear();
-    m_undoStack.append(step);
-}
-
-void UndoStack::registerRedoStep(PassRefPtrWillBeRawPtr<UndoStep> step)
-{
-    m_redoStack.append(step);
-}
-
-void UndoStack::didUnloadFrame(const LocalFrame& frame)
-{
-    EventDispatchForbiddenScope assertNoEventDispatch;
-    filterOutUndoSteps(m_undoStack, frame);
-    filterOutUndoSteps(m_redoStack, frame);
-}
-
-void UndoStack::filterOutUndoSteps(UndoStepStack& stack, const LocalFrame& frame)
-{
-    UndoStepStack newStack;
-    while (!stack.isEmpty()) {
-        UndoStep* step = stack.first().get();
-        if (!step->belongsTo(frame))
-            newStack.append(step);
-        stack.removeFirst();
-    }
-    stack.swap(newStack);
-}
-
-bool UndoStack::canUndo() const
-{
-    return !m_undoStack.isEmpty();
-}
-
-bool UndoStack::canRedo() const
-{
-    return !m_redoStack.isEmpty();
-}
-
-void UndoStack::undo()
-{
-    if (canUndo()) {
-        UndoStepStack::iterator back = --m_undoStack.end();
-        RefPtrWillBeRawPtr<UndoStep> step(back->get());
-        m_undoStack.remove(back);
-        step->unapply();
-        // unapply will call us back to push this command onto the redo stack.
-    }
-}
-
-void UndoStack::redo()
-{
-    if (canRedo()) {
-        UndoStepStack::iterator back = --m_redoStack.end();
-        RefPtrWillBeRawPtr<UndoStep> step(back->get());
-        m_redoStack.remove(back);
-
-        ASSERT(!m_inRedo);
-        TemporaryChange<bool> redoScope(m_inRedo, true);
-        step->reapply();
-        // reapply will call us back to push this command onto the undo stack.
-    }
-}
-
-DEFINE_TRACE(UndoStack)
-{
-    visitor->trace(m_undoStack);
-    visitor->trace(m_redoStack);
-}
-
-} // namespace blink