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 "JoinTextNodesCommand.h"

    28 

    29 #include "Text.h"

    30 

    31 namespace WebCore {

    32 

    33 JoinTextNodesCommand::JoinTextNodesCommand(PassRefPtr<Text> text1, PassRefPtr<Text> text2)

    34     : SimpleEditCommand(text1->document()), m_text1(text1), m_text2(text2)

    35 {

    36     ASSERT(m_text1);

    37     ASSERT(m_text2);

    38     ASSERT(m_text1->nextSibling() == m_text2);

    39     ASSERT(m_text1->length() > 0);

    40     ASSERT(m_text2->length() > 0);

    41 }

    42 

    43 void JoinTextNodesCommand::doApply()

    44 {

    45     if (m_text1->nextSibling() != m_text2)

    46         return;

    47 

    48     Node* parent = m_text2->parentNode();

    49     if (!parent || !parent->isContentEditable())

    50         return;

    51     

    52     ExceptionCode ec = 0;

    53     m_text2->insertData(0, m_text1->data(), ec);

    54     if (ec)

    55         return;

    56 

    57     m_text1->remove(ec);

    58 }

    59 

    60 void JoinTextNodesCommand::doUnapply()

    61 {

    62     if (m_text1->parentNode())

    63         return;

    64 

    65     Node* parent = m_text2->parentNode();

    66     if (!parent || !parent->isContentEditable())

    67         return;

    68 

    69     ExceptionCode ec = 0;

    70 

    71     parent->insertBefore(m_text1.get(), m_text2.get(), ec);

    72     if (ec)

    73         return;

    74 

    75     m_text2->deleteData(0, m_text1->length(), ec);

    76 }

    77 

    78 } // namespace WebCore