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      1 /*
      2  * Copyright (C) 2005, 2008 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "core/editing/InsertIntoTextNodeCommand.h"
     28 
     29 #include "bindings/v8/ExceptionStatePlaceholder.h"
     30 #include "core/accessibility/AXObjectCache.h"
     31 #include "core/dom/Document.h"
     32 #include "core/dom/Text.h"
     33 #include "core/page/Settings.h"
     34 #include "core/rendering/RenderText.h"
     35 
     36 namespace WebCore {
     37 
     38 InsertIntoTextNodeCommand::InsertIntoTextNodeCommand(PassRefPtr<Text> node, unsigned offset, const String& text)
     39     : SimpleEditCommand(node->document())
     40     , m_node(node)
     41     , m_offset(offset)
     42     , m_text(text)
     43 {
     44     ASSERT(m_node);
     45     ASSERT(m_offset <= m_node->length());
     46     ASSERT(!m_text.isEmpty());
     47 }
     48 
     49 void InsertIntoTextNodeCommand::doApply()
     50 {
     51     bool passwordEchoEnabled = document()->settings() && document()->settings()->passwordEchoEnabled();
     52     if (passwordEchoEnabled)
     53         document()->updateLayoutIgnorePendingStylesheets();
     54 
     55     if (!m_node->rendererIsEditable())
     56         return;
     57 
     58     if (passwordEchoEnabled) {
     59         RenderText* renderText = toRenderText(m_node->renderer());
     60         if (renderText && renderText->isSecure())
     61             renderText->momentarilyRevealLastTypedCharacter(m_offset + m_text.length() - 1);
     62     }
     63 
     64     m_node->insertData(m_offset, m_text, IGNORE_EXCEPTION);
     65 
     66     if (AXObjectCache* cache = document()->existingAXObjectCache())
     67         cache->nodeTextChangeNotification(m_node.get(), AXObjectCache::AXTextInserted, m_offset, m_text);
     68 }
     69 
     70 void InsertIntoTextNodeCommand::doUnapply()
     71 {
     72     if (!m_node->rendererIsEditable())
     73         return;
     74 
     75     // Need to notify this before actually deleting the text
     76     if (AXObjectCache* cache = document()->existingAXObjectCache())
     77         cache->nodeTextChangeNotification(m_node.get(), AXObjectCache::AXTextDeleted, m_offset, m_text);
     78 
     79     m_node->deleteData(m_offset, m_text.length(), IGNORE_EXCEPTION);
     80 }
     81 
     82 #ifndef NDEBUG
     83 void InsertIntoTextNodeCommand::getNodesInCommand(HashSet<Node*>& nodes)
     84 {
     85     addNodeAndDescendants(m_node.get(), nodes);
     86 }
     87 #endif
     88 
     89 } // namespace WebCore
     90