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Diffstat (limited to 'Source/WebCore/editing/EditCommand.cpp')
| -rw-r--r-- | Source/WebCore/editing/EditCommand.cpp | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/Source/WebCore/editing/EditCommand.cpp b/Source/WebCore/editing/EditCommand.cpp new file mode 100644 index 0000000..1b4451d --- /dev/null +++ b/Source/WebCore/editing/EditCommand.cpp @@ -0,0 +1,217 @@ +/* + * 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 "DeleteButtonController.h" +#include "Document.h" +#include "Editor.h" +#include "Element.h" +#include "EventNames.h" +#include "Frame.h" +#include "ScopedEventQueue.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(); + + { + EventQueueScope scope; + 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 |