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authorSteve Block <steveblock@google.com>2011-05-13 06:44:40 -0700
committerAndroid (Google) Code Review <android-gerrit@google.com>2011-05-13 06:44:40 -0700
commit08014c20784f3db5df3a89b73cce46037b77eb59 (patch)
tree47749210d31e19e6e2f64036fa8fae2ad693476f /Source/WebCore/loader/cache/CachedResourceClient.h
parent860220379e56aeb66424861ad602b07ee22b4055 (diff)
parent4c3661f7918f8b3f139f824efb7855bedccb4c94 (diff)
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Merge changes Ide388898,Ic49f367c,I1158a808,Iacb6ca5d,I2100dd3a,I5c1abe54,Ib0ef9902,I31dbc523,I570314b3
* changes: Merge WebKit at r75315: Update WebKit version Merge WebKit at r75315: Add FrameLoaderClient PageCache stubs Merge WebKit at r75315: Stub out AXObjectCache::remove() Merge WebKit at r75315: Fix ImageBuffer Merge WebKit at r75315: Fix PluginData::initPlugins() Merge WebKit at r75315: Fix conflicts Merge WebKit at r75315: Fix Makefiles Merge WebKit at r75315: Move Android-specific WebCore files to Source Merge WebKit at r75315: Initial merge by git.
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+/*
+ Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
+ Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
+ Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public License
+ along with this library; see the file COPYING.LIB. If not, write to
+ the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+
+ This class provides all functionality needed for loading images, style sheets and html
+ pages from the web. It has a memory cache for these objects.
+*/
+
+#ifndef CachedResourceClient_h
+#define CachedResourceClient_h
+
+#include <wtf/FastAllocBase.h>
+#include <wtf/Forward.h>
+
+namespace WebCore {
+
+ class CachedCSSStyleSheet;
+ class CachedFont;
+ class CachedResource;
+ class CachedImage;
+ class Image;
+ class IntRect;
+ class KURL;
+
+ /**
+ * @internal
+ *
+ * a client who wants to load stylesheets, images or scripts from the web has to
+ * inherit from this class and overload one of the 3 functions
+ *
+ */
+ class CachedResourceClient : public FastAllocBase
+ {
+ public:
+ virtual ~CachedResourceClient() { }
+
+ // Called whenever a frame of an image changes, either because we got more data from the network or
+ // because we are animating. If not null, the IntRect is the changed rect of the image.
+ virtual void imageChanged(CachedImage*, const IntRect* = 0) { };
+
+ // Called to find out if this client wants to actually display the image. Used to tell when we
+ // can halt animation. Content nodes that hold image refs for example would not render the image,
+ // but RenderImages would (assuming they have visibility: visible and their render tree isn't hidden
+ // e.g., in the b/f cache or in a background tab).
+ virtual bool willRenderImage(CachedImage*) { return false; }
+
+ virtual void setCSSStyleSheet(const String& /* href */, const KURL& /* baseURL */, const String& /* charset */, const CachedCSSStyleSheet*) { }
+ virtual void setXSLStyleSheet(const String& /* href */, const KURL& /* baseURL */, const String& /* sheet */) { }
+ virtual void fontLoaded(CachedFont*) {};
+ virtual void notifyFinished(CachedResource*) { }
+ };
+
+}
+
+#endif