| /* |
| This file is part of the KDE libraries |
| |
| Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de) |
| Copyright (C) 2001 Dirk Mueller <mueller@kde.org> |
| Copyright (C) 2004, 2005, 2006 Apple Computer, Inc. |
| |
| 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., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, 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 |
| |
| #if ENABLE(XBL) |
| namespace XBL { |
| class XBLDocument; |
| } |
| #endif |
| |
| namespace WebCore { |
| |
| class CachedResource; |
| class CachedImage; |
| class String; |
| class Image; |
| class IntRect; |
| |
| /** |
| * @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: |
| virtual ~CachedResourceClient() { } |
| |
| // Called whenever a frame of an image changes, either because we got more data from the network or |
| // because we are animating. |
| virtual void imageChanged(CachedImage*) { }; |
| |
| // 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& /*URL*/, const String& /*charset*/, const String& /*sheet*/) { } |
| virtual void setXSLStyleSheet(const String& /*URL*/, const String& /*sheet*/) { } |
| |
| #if ENABLE(XBL) |
| virtual void setXBLDocument(const String& /*URL*/, XBL::XBLDocument*) { } |
| #endif |
| |
| virtual void notifyFinished(CachedResource*) { } |
| }; |
| |
| } |
| |
| #endif |