--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/editing/EditCommand.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,215 @@
+/*
+ * Copyright (C) 2005, 2006, 2007 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. 
+ */
+
+#include "config.h"
+#include "EditCommand.h"
+
+#include "CompositeEditCommand.h"
+#include "CSSComputedStyleDeclaration.h"
+#include "CSSMutableStyleDeclaration.h"
+#include "DeleteButtonController.h"
+#include "Document.h"
+#include "Editor.h"
+#include "Element.h"
+#include "EventNames.h"
+#include "Frame.h"
+#include "SelectionController.h"
+#include "VisiblePosition.h"
+#include "htmlediting.h"
+
+namespace WebCore {
+
+EditCommand::EditCommand(Document* document) 
+    : m_document(document)
+    , m_parent(0)
+{
+    ASSERT(m_document);
+    ASSERT(m_document->frame());
+    setStartingSelection(avoidIntersectionWithNode(m_document->frame()->selection()->selection(), m_document->frame()->editor()->deleteButtonController()->containerElement()));
+    setEndingSelection(m_startingSelection);
+}
+
+EditCommand::~EditCommand()
+{
+}
+
+void EditCommand::apply()
+{
+    ASSERT(m_document);
+    ASSERT(m_document->frame());
+ 
+    Frame* frame = m_document->frame();
+    
+    if (isTopLevelCommand()) {
+        if (!endingSelection().isContentRichlyEditable()) {
+            switch (editingAction()) {
+                case EditActionTyping:
+                case EditActionPaste:
+                case EditActionDrag:
+                case EditActionSetWritingDirection:
+                case EditActionCut:
+                case EditActionUnspecified:
+                    break;
+                default:
+                    ASSERT_NOT_REACHED();
+                    return;
+            }
+        }
+    }
+    
+    // Changes to the document may have been made since the last editing operation that 
+    // require a layout, as in <rdar://problem/5658603>.  Low level operations, like 
+    // RemoveNodeCommand, don't require a layout because the high level operations that 
+    // use them perform one if one is necessary (like for the creation of VisiblePositions).
+    if (isTopLevelCommand())
+        updateLayout();
+
+    DeleteButtonController* deleteButtonController = frame->editor()->deleteButtonController();
+    deleteButtonController->disable();
+    doApply();
+    deleteButtonController->enable();
+
+    if (isTopLevelCommand()) {
+        // Only need to call appliedEditing for top-level commands, and TypingCommands do it on their
+        // own (see TypingCommand::typingAddedToOpenCommand).
+        if (!isTypingCommand())
+            frame->editor()->appliedEditing(this);
+    }
+}
+
+void EditCommand::unapply()
+{
+    ASSERT(m_document);
+    ASSERT(m_document->frame());
+ 
+    Frame* frame = m_document->frame();
+    
+    // Changes to the document may have been made since the last editing operation that 
+    // require a layout, as in <rdar://problem/5658603>.  Low level operations, like 
+    // RemoveNodeCommand, don't require a layout because the high level operations that 
+    // use them perform one if one is necessary (like for the creation of VisiblePositions).
+    if (isTopLevelCommand())
+        updateLayout();
+    
+    DeleteButtonController* deleteButtonController = frame->editor()->deleteButtonController();
+    deleteButtonController->disable();
+    doUnapply();
+    deleteButtonController->enable();
+
+    if (isTopLevelCommand())
+        frame->editor()->unappliedEditing(this);
+}
+
+void EditCommand::reapply()
+{
+    ASSERT(m_document);
+    ASSERT(m_document->frame());
+ 
+    Frame* frame = m_document->frame();
+    
+    // Changes to the document may have been made since the last editing operation that 
+    // require a layout, as in <rdar://problem/5658603>.  Low level operations, like 
+    // RemoveNodeCommand, don't require a layout because the high level operations that 
+    // use them perform one if one is necessary (like for the creation of VisiblePositions).
+    if (isTopLevelCommand())
+        updateLayout();
+
+    DeleteButtonController* deleteButtonController = frame->editor()->deleteButtonController();
+    deleteButtonController->disable();
+    doReapply();
+    deleteButtonController->enable();
+
+    if (isTopLevelCommand())
+        frame->editor()->reappliedEditing(this);
+}
+
+void EditCommand::doReapply()
+{
+    doApply();
+}
+
+EditAction EditCommand::editingAction() const
+{
+    return EditActionUnspecified;
+}
+
+void EditCommand::setStartingSelection(const VisibleSelection& s)
+{
+    Element* root = s.rootEditableElement();
+    for (EditCommand* cmd = this; ; cmd = cmd->m_parent) {
+        cmd->m_startingSelection = s;
+        cmd->m_startingRootEditableElement = root;
+        if (!cmd->m_parent || cmd->m_parent->isFirstCommand(cmd))
+            break;
+    }
+}
+
+void EditCommand::setEndingSelection(const VisibleSelection &s)
+{
+    Element* root = s.rootEditableElement();
+    for (EditCommand* cmd = this; cmd; cmd = cmd->m_parent) {
+        cmd->m_endingSelection = s;
+        cmd->m_endingRootEditableElement = root;
+    }
+}
+
+bool EditCommand::preservesTypingStyle() const
+{
+    return false;
+}
+
+bool EditCommand::isInsertTextCommand() const
+{
+    return false;
+}
+
+bool EditCommand::isTypingCommand() const
+{
+    return false;
+}
+
+
+void EditCommand::updateLayout() const
+{
+    document()->updateLayoutIgnorePendingStylesheets();
+}
+
+void EditCommand::setParent(CompositeEditCommand* parent)
+{
+    ASSERT(parent);
+    ASSERT(!m_parent);
+    m_parent = parent;
+    m_startingSelection = parent->m_endingSelection;
+    m_endingSelection = parent->m_endingSelection;
+    m_startingRootEditableElement = parent->m_endingRootEditableElement;
+    m_endingRootEditableElement = parent->m_endingRootEditableElement;
+}
+
+void applyCommand(PassRefPtr<EditCommand> command)
+{
+    command->apply();
+}
+
+} // namespace WebCore