1 /*

     2  * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)

     3  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.

     4  *

     5  * This library is free software; you can redistribute it and/or

     6  * modify it under the terms of the GNU Library General Public

     7  * License as published by the Free Software Foundation; either

     8  * version 2 of the License, or (at your option) any later version.

     9  *

    10  * This library is distributed in the hope that it will be useful,

    11  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    13  * Library General Public License for more details.

    14  *

    15  * You should have received a copy of the GNU Library General Public License

    16  * along with this library; see the file COPYING.LIB.  If not, write to

    17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

    18  * Boston, MA 02110-1301, USA.

    19  *

    20  */

    21 

    22 #include "config.h"

    23 #include "ContentData.h"

    24 

    25 #include "CounterContent.h"

    26 #include "StringImpl.h"

    27 #include "StyleImage.h"

    28 

    29 namespace WebCore {

    30 

    31 void ContentData::clear()

    32 {

    33     deleteContent();

    34 

    35     ContentData* n = m_next;

    36     m_next = 0;

    37 

    38     // Reverse the list so we can delete without recursing.

    39     ContentData* last = 0;

    40     ContentData* c;

    41     while ((c = n)) {

    42         n = c->m_next;

    43         c->m_next = last;

    44         last = c;

    45     }

    46     for (c = last; c; c = n) {

    47         n = c->m_next;

    48         c->m_next = 0;

    49         delete c;

    50     }

    51 }

    52 

    53 bool ContentData::dataEquivalent(const ContentData& other) const

    54 {

    55     if (type() != other.type())

    56         return false;

    57 

    58     switch (type()) {

    59         case CONTENT_NONE:

    60             return true;

    61             break;

    62         case CONTENT_TEXT:

    63             return equal(text(), other.text());

    64             break;

    65         case CONTENT_OBJECT:

    66             return StyleImage::imagesEquivalent(image(), other.image());

    67             break;

    68         case CONTENT_COUNTER:

    69             return *counter() == *other.counter();

    70             break;

    71     }

    72 

    73     ASSERT_NOT_REACHED();

    74     return false;

    75 }

    76 

    77 void ContentData::deleteContent()

    78 {

    79     switch (m_type) {

    80         case CONTENT_NONE:

    81             break;

    82         case CONTENT_OBJECT:

    83             m_content.m_image->deref();

    84             break;

    85         case CONTENT_TEXT:

    86             m_content.m_text->deref();

    87             break;

    88         case CONTENT_COUNTER:

    89             delete m_content.m_counter;

    90             break;

    91     }

    92 

    93     m_type = CONTENT_NONE;

    94 }

    95 

    96 } // namespace WebCore