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author | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 19:30:52 -0800 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 19:30:52 -0800 |
commit | 8e35f3cfc7fba1d1c829dc557ebad6409cbe16a2 (patch) | |
tree | 11425ea0b299d6fb89c6d3618a22d97d5bf68d0f /WebCore/editing/SplitTextNodeCommand.cpp | |
parent | 648161bb0edfc3d43db63caed5cc5213bc6cb78f (diff) | |
download | external_webkit-8e35f3cfc7fba1d1c829dc557ebad6409cbe16a2.zip external_webkit-8e35f3cfc7fba1d1c829dc557ebad6409cbe16a2.tar.gz external_webkit-8e35f3cfc7fba1d1c829dc557ebad6409cbe16a2.tar.bz2 |
auto import from //depot/cupcake/@135843
Diffstat (limited to 'WebCore/editing/SplitTextNodeCommand.cpp')
-rw-r--r-- | WebCore/editing/SplitTextNodeCommand.cpp | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/WebCore/editing/SplitTextNodeCommand.cpp b/WebCore/editing/SplitTextNodeCommand.cpp new file mode 100644 index 0000000..be6cd1d --- /dev/null +++ b/WebCore/editing/SplitTextNodeCommand.cpp @@ -0,0 +1,90 @@ +/* + * Copyright (C) 2005, 2008 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 "SplitTextNodeCommand.h" + +#include "Document.h" +#include "Text.h" +#include <wtf/Assertions.h> + +namespace WebCore { + +SplitTextNodeCommand::SplitTextNodeCommand(PassRefPtr<Text> text, int offset) + : SimpleEditCommand(text->document()), m_text2(text), m_offset(offset) +{ + ASSERT(m_text2); + ASSERT(m_text2->length() > 0); +} + +void SplitTextNodeCommand::doApply() +{ + ASSERT(m_text2); + ASSERT(m_offset > 0); + + ExceptionCode ec = 0; + + // NOTE: Various callers rely on the fact that the original node becomes + // the second node (i.e. the new node is inserted before the existing one). + // That is not a fundamental dependency (i.e. it could be re-coded), but + // rather is based on how this code happens to work. + if (!m_text1) { + // create only if needed. + // if reapplying, this object will already exist. + m_text1 = document()->createTextNode(m_text2->substringData(0, m_offset, ec)); + ASSERT(ec == 0); + ASSERT(m_text1); + } + + document()->copyMarkers(m_text2.get(), 0, m_offset, m_text1.get(), 0); + m_text2->deleteData(0, m_offset, ec); + ASSERT(ec == 0); + + m_text2->parentNode()->insertBefore(m_text1.get(), m_text2.get(), ec); + ASSERT(ec == 0); + + ASSERT(m_text2->previousSibling()->isTextNode()); + ASSERT(m_text2->previousSibling() == m_text1); +} + +void SplitTextNodeCommand::doUnapply() +{ + ASSERT(m_text1); + ASSERT(m_text2); + ASSERT(m_text1->nextSibling() == m_text2); + + ExceptionCode ec = 0; + m_text2->insertData(0, m_text1->data(), ec); + ASSERT(ec == 0); + + document()->copyMarkers(m_text1.get(), 0, m_offset, m_text2.get(), 0); + + m_text2->parentNode()->removeChild(m_text1.get(), ec); + ASSERT(ec == 0); + + m_offset = m_text1->length(); +} + +} // namespace WebCore |