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Diffstat (limited to 'WebCore/loader/PingLoader.h')
-rw-r--r-- | WebCore/loader/PingLoader.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/WebCore/loader/PingLoader.h b/WebCore/loader/PingLoader.h new file mode 100644 index 0000000..1d8a2d8 --- /dev/null +++ b/WebCore/loader/PingLoader.h @@ -0,0 +1,71 @@ +/* + * Copyright (C) 2010 Google Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef PingLoader_h +#define PingLoader_h + +#include "ResourceHandleClient.h" +#include <wtf/Noncopyable.h> +#include <wtf/RefPtr.h> + +namespace WebCore { + +class Frame; +class KURL; +class ResourceError; +class ResourceHandle; +class ResourceResponse; + +// This class triggers asynchronous loads independent of Frame staying alive (i.e., auditing pingbacks). +// Since nothing depends on resources loaded through this class, we just want +// to allow the load to live long enough to ensure the message was actually sent. +// Therefore, as soon as a callback is received from the ResourceHandle, this class +// will cancel the load and delete itself. +class PingLoader : private ResourceHandleClient, public Noncopyable { +public: + static void loadImage(Frame*, const KURL& url); + + ~PingLoader(); + +private: + PingLoader(Frame*, const ResourceRequest&); + + void didReceiveResponse(ResourceHandle*, const ResourceResponse&) { delete this; } + void didReceiveData(ResourceHandle*, const char*, int) { delete this; } + void didFinishLoading(ResourceHandle*) { delete this; } + void didFail(ResourceHandle*, const ResourceError&) { delete this; } + + RefPtr<ResourceHandle> m_handle; +}; + +} + +#endif |