1 /*

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

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

     4  * Copyright (C) 2004, 2005, 2006, 2007, 2010 Apple Inc. All rights reserved.

     5  *

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

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

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

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

    10  *

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

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

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

    14  * Library General Public License for more details.

    15  *

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

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

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

    19  * Boston, MA 02110-1301, USA.

    20  */

    21 

    22 #include "config.h"

    23 #include "HTMLImageLoader.h"

    24 

    25 #include "CSSHelper.h"

    26 #include "CachedImage.h"

    27 #include "Element.h"

    28 #include "Event.h"

    29 #include "EventNames.h"

    30 #include "HTMLNames.h"

    31 #include "HTMLObjectElement.h"

    32 

    33 #if USE(JSC)

    34 #include "JSDOMWindowBase.h"

    35 #endif

    36 

    37 namespace WebCore {

    38 

    39 HTMLImageLoader::HTMLImageLoader(Element* node)

    40     : ImageLoader(node)

    41 {

    42 }

    43 

    44 HTMLImageLoader::~HTMLImageLoader()

    45 {

    46 }

    47 

    48 void HTMLImageLoader::dispatchLoadEvent()

    49 {

    50     bool errorOccurred = image()->errorOccurred();

    51     if (!errorOccurred && image()->httpStatusCodeErrorOccurred())

    52         errorOccurred = element()->hasTagName(HTMLNames::objectTag); // An <object> considers a 404 to be an error and should fire onerror.

    53     element()->dispatchEvent(Event::create(errorOccurred ? eventNames().errorEvent : eventNames().loadEvent, false, false));

    54 }

    55 

    56 String HTMLImageLoader::sourceURI(const AtomicString& attr) const

    57 {

    58     return deprecatedParseURL(attr);

    59 }

    60 

    61 void HTMLImageLoader::notifyFinished(CachedResource*)

    62 {

    63     CachedImage* cachedImage = image();

    64 

    65     Element* elem = element();

    66     ImageLoader::notifyFinished(cachedImage);

    67 

    68 #if USE(JSC)

    69     if (!cachedImage->errorOccurred() && !cachedImage->httpStatusCodeErrorOccurred()) {

    70         if (!elem->inDocument()) {

    71             JSC::JSGlobalData* globalData = JSDOMWindowBase::commonJSGlobalData();

    72             globalData->heap.reportExtraMemoryCost(cachedImage->encodedSize());

    73         }

    74     }

    75 #endif

    76 

    77     if ((cachedImage->errorOccurred() || cachedImage->httpStatusCodeErrorOccurred()) && elem->hasTagName(HTMLNames::objectTag))

    78         static_cast<HTMLObjectElement*>(elem)->renderFallbackContent();

    79 }

    80 

    81 }