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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/RemoveNodeCommand.h"
     28 
     29 #include "bindings/v8/ExceptionStatePlaceholder.h"
     30 #include "core/dom/Node.h"
     31 #include "wtf/Assertions.h"
     32 
     33 namespace WebCore {
     34 
     35 RemoveNodeCommand::RemoveNodeCommand(PassRefPtr<Node> node, ShouldAssumeContentIsAlwaysEditable shouldAssumeContentIsAlwaysEditable)
     36     : SimpleEditCommand(node->document())
     37     , m_node(node)
     38     , m_shouldAssumeContentIsAlwaysEditable(shouldAssumeContentIsAlwaysEditable)
     39 {
     40     ASSERT(m_node);
     41     ASSERT(m_node->parentNode());
     42 }
     43 
     44 void RemoveNodeCommand::doApply()
     45 {
     46     ContainerNode* parent = m_node->parentNode();
     47     if (!parent || (m_shouldAssumeContentIsAlwaysEditable == DoNotAssumeContentIsAlwaysEditable
     48         && !parent->isContentEditable(Node::UserSelectAllIsAlwaysNonEditable) && parent->attached()))
     49         return;
     50     ASSERT(parent->isContentEditable(Node::UserSelectAllIsAlwaysNonEditable) || !parent->attached());
     51 
     52     m_parent = parent;
     53     m_refChild = m_node->nextSibling();
     54 
     55     m_node->remove(IGNORE_EXCEPTION);
     56 }
     57 
     58 void RemoveNodeCommand::doUnapply()
     59 {
     60     RefPtr<ContainerNode> parent = m_parent.release();
     61     RefPtr<Node> refChild = m_refChild.release();
     62     if (!parent || !parent->rendererIsEditable())
     63         return;
     64 
     65     parent->insertBefore(m_node.get(), refChild.get(), IGNORE_EXCEPTION);
     66 }
     67 
     68 #ifndef NDEBUG
     69 void RemoveNodeCommand::getNodesInCommand(HashSet<Node*>& nodes)
     70 {
     71     addNodeAndDescendants(m_parent.get(), nodes);
     72     addNodeAndDescendants(m_refChild.get(), nodes);
     73     addNodeAndDescendants(m_node.get(), nodes);
     74 }
     75 #endif
     76 
     77 }
     78