1 /*

     2  * (C) 1999-2003 Lars Knoll (knoll@kde.org)

     3  * Copyright (C) 2004, 2005, 2006, 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 #include "config.h"

    22 #include "CSSImageValue.h"

    23 

    24 #include "CSSValueKeywords.h"

    25 #include "Cache.h"

    26 #include "CachedImage.h"

    27 #include "DocLoader.h"

    28 #include "StyleCachedImage.h"

    29 

    30 namespace WebCore {

    31 

    32 CSSImageValue::CSSImageValue(const String& url)

    33     : CSSPrimitiveValue(url, CSS_URI)

    34     , m_accessedImage(false)

    35 {

    36 }

    37 

    38 CSSImageValue::CSSImageValue()

    39     : CSSPrimitiveValue(CSSValueNone)

    40     , m_accessedImage(true)

    41 {

    42 }

    43 

    44 CSSImageValue::~CSSImageValue()

    45 {

    46     if (m_image)

    47         m_image->cachedImage()->removeClient(this);

    48 }

    49 

    50 StyleCachedImage* CSSImageValue::cachedImage(DocLoader* loader)

    51 {

    52     return cachedImage(loader, getStringValue());

    53 }

    54 

    55 StyleCachedImage* CSSImageValue::cachedImage(DocLoader* loader, const String& url)

    56 {

    57     if (!m_accessedImage) {

    58         m_accessedImage = true;

    59 

    60         CachedImage* cachedImage = 0;

    61         if (loader)

    62             cachedImage = loader->requestImage(url);

    63         else {

    64             // FIXME: Should find a way to make these images sit in their own memory partition, since they are user agent images.

    65             cachedImage = static_cast<CachedImage*>(cache()->requestResource(0, CachedResource::ImageResource, KURL(ParsedURLString, url), String()));

    66         }

    67 

    68         if (cachedImage) {

    69             cachedImage->addClient(this);

    70             m_image = StyleCachedImage::create(cachedImage);

    71         }

    72     }

    73     

    74     return m_image.get();

    75 }

    76 

    77 String CSSImageValue::cachedImageURL()

    78 {

    79     if (!m_image)

    80         return String();

    81     return m_image->cachedImage()->url();

    82 }

    83 

    84 void CSSImageValue::clearCachedImage()

    85 {

    86     if (m_image)

    87         m_image->cachedImage()->removeClient(this);

    88     m_image = 0;

    89     m_accessedImage = false;

    90 }

    91 

    92 } // namespace WebCore