1 /* 2 * Copyright (C) 2009 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef ThreadableLoader_h 32 #define ThreadableLoader_h 33 34 #include <wtf/Noncopyable.h> 35 #include <wtf/PassRefPtr.h> 36 #include <wtf/Vector.h> 37 38 namespace WebCore { 39 40 class ResourceError; 41 class ResourceRequest; 42 class ResourceResponse; 43 class ScriptExecutionContext; 44 class ThreadableLoaderClient; 45 46 enum StoredCredentials { 47 AllowStoredCredentials, 48 DoNotAllowStoredCredentials 49 }; 50 51 enum CrossOriginRequestPolicy { 52 DenyCrossOriginRequests, 53 UseAccessControl, 54 AllowCrossOriginRequests 55 }; 56 57 struct ThreadableLoaderOptions { ThreadableLoaderOptionsThreadableLoaderOptions58 ThreadableLoaderOptions() : sendLoadCallbacks(false), sniffContent(false), allowCredentials(false), forcePreflight(false), crossOriginRequestPolicy(DenyCrossOriginRequests) { } 59 bool sendLoadCallbacks; 60 bool sniffContent; 61 bool allowCredentials; // Whether HTTP credentials and cookies are sent with the request. 62 bool forcePreflight; // If AccessControl is used, whether to force a preflight. 63 CrossOriginRequestPolicy crossOriginRequestPolicy; 64 }; 65 66 // Useful for doing loader operations from any thread (not threadsafe, 67 // just able to run on threads other than the main thread). 68 class ThreadableLoader : public Noncopyable { 69 public: 70 static void loadResourceSynchronously(ScriptExecutionContext*, const ResourceRequest&, ThreadableLoaderClient&, const ThreadableLoaderOptions&); 71 static PassRefPtr<ThreadableLoader> create(ScriptExecutionContext*, ThreadableLoaderClient*, const ResourceRequest&, const ThreadableLoaderOptions&); 72 73 virtual void cancel() = 0; ref()74 void ref() { refThreadableLoader(); } deref()75 void deref() { derefThreadableLoader(); } 76 77 protected: ~ThreadableLoader()78 virtual ~ThreadableLoader() { } 79 virtual void refThreadableLoader() = 0; 80 virtual void derefThreadableLoader() = 0; 81 }; 82 83 } // namespace WebCore 84 85 #endif // ThreadableLoader_h 86