From 8e35f3cfc7fba1d1c829dc557ebad6409cbe16a2 Mon Sep 17 00:00:00 2001
From: The Android Open Source Project <initial-contribution@android.com>
Date: Tue, 3 Mar 2009 19:30:52 -0800
Subject: auto import from //depot/cupcake/@135843

---
 WebCore/editing/SplitTextNodeCommand.cpp | 90 ++++++++++++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 WebCore/editing/SplitTextNodeCommand.cpp

(limited to 'WebCore/editing/SplitTextNodeCommand.cpp')

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
-- 
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