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106 lines
3.8 KiB
C++
106 lines
3.8 KiB
C++
/*
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* Copyright (C) 2005, 2008 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "sky/engine/core/editing/SplitTextNodeCommand.h"
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#include "sky/engine/bindings/exception_state.h"
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#include "sky/engine/bindings/exception_state_placeholder.h"
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#include "sky/engine/core/dom/Document.h"
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#include "sky/engine/core/dom/DocumentMarkerController.h"
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#include "sky/engine/core/dom/Text.h"
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#include "sky/engine/wtf/Assertions.h"
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namespace blink {
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SplitTextNodeCommand::SplitTextNodeCommand(PassRefPtr<Text> text, int offset)
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: SimpleEditCommand(text->document())
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, m_text2(text)
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, m_offset(offset)
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{
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// NOTE: Various callers rely on the fact that the original node becomes
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// the second node (i.e. the new node is inserted before the existing one).
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// That is not a fundamental dependency (i.e. it could be re-coded), but
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// rather is based on how this code happens to work.
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ASSERT(m_text2);
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ASSERT(m_text2->length() > 0);
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ASSERT(m_offset > 0);
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ASSERT(m_offset < m_text2->length());
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}
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void SplitTextNodeCommand::doApply()
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{
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ContainerNode* parent = m_text2->parentNode();
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if (!parent || !parent->hasEditableStyle())
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return;
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String prefixText = m_text2->substringData(0, m_offset, IGNORE_EXCEPTION);
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if (prefixText.isEmpty())
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return;
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m_text1 = Text::create(document(), prefixText);
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ASSERT(m_text1);
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document().markers().copyMarkers(m_text2.get(), 0, m_offset, m_text1.get(), 0);
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insertText1AndTrimText2();
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}
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void SplitTextNodeCommand::doUnapply()
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{
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if (!m_text1 || !m_text1->hasEditableStyle())
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return;
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ASSERT(m_text1->document() == document());
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String prefixText = m_text1->data();
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m_text2->insertData(0, prefixText, ASSERT_NO_EXCEPTION, CharacterData::DeprecatedRecalcStyleImmediatlelyForEditing);
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document().markers().copyMarkers(m_text1.get(), 0, prefixText.length(), m_text2.get(), 0);
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m_text1->remove(ASSERT_NO_EXCEPTION);
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}
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void SplitTextNodeCommand::doReapply()
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{
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if (!m_text1 || !m_text2)
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return;
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ContainerNode* parent = m_text2->parentNode();
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if (!parent || !parent->hasEditableStyle())
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return;
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insertText1AndTrimText2();
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}
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void SplitTextNodeCommand::insertText1AndTrimText2()
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{
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TrackExceptionState exceptionState;
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m_text2->parentNode()->insertBefore(m_text1.get(), m_text2.get(), exceptionState);
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if (exceptionState.had_exception())
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return;
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m_text2->deleteData(0, m_offset, exceptionState, CharacterData::DeprecatedRecalcStyleImmediatlelyForEditing);
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}
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} // namespace blink
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