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 "ResourceLoaderOptions.h" 35#include <wtf/Noncopyable.h> 36#include <wtf/PassRefPtr.h> 37#include <wtf/RefPtr.h> 38#include <wtf/Vector.h> 39 40#if ENABLE(RESOURCE_TIMING) 41#include <wtf/text/AtomicString.h> 42#endif 43 44namespace WebCore { 45 46 class ResourceError; 47 class ResourceRequest; 48 class ResourceResponse; 49 class ScriptExecutionContext; 50 class SecurityOrigin; 51 class ThreadableLoaderClient; 52 53 enum CrossOriginRequestPolicy { 54 DenyCrossOriginRequests, 55 UseAccessControl, 56 AllowCrossOriginRequests 57 }; 58 59 enum PreflightPolicy { 60 ConsiderPreflight, 61 ForcePreflight, 62 PreventPreflight 63 }; 64 65 struct ThreadableLoaderOptions : public ResourceLoaderOptions { 66 ThreadableLoaderOptions(); 67 ~ThreadableLoaderOptions(); 68 69 PreflightPolicy preflightPolicy; // If AccessControl is used, how to determine if a preflight is needed. 70 CrossOriginRequestPolicy crossOriginRequestPolicy; 71 RefPtr<SecurityOrigin> securityOrigin; 72#if ENABLE(RESOURCE_TIMING) 73 AtomicString initiator; 74#endif 75 }; 76 77 // Useful for doing loader operations from any thread (not threadsafe, 78 // just able to run on threads other than the main thread). 79 class ThreadableLoader { 80 WTF_MAKE_NONCOPYABLE(ThreadableLoader); 81 public: 82 static void loadResourceSynchronously(ScriptExecutionContext*, const ResourceRequest&, ThreadableLoaderClient&, const ThreadableLoaderOptions&); 83 static PassRefPtr<ThreadableLoader> create(ScriptExecutionContext*, ThreadableLoaderClient*, const ResourceRequest&, const ThreadableLoaderOptions&); 84 85 virtual void cancel() = 0; 86 void ref() { refThreadableLoader(); } 87 void deref() { derefThreadableLoader(); } 88 89 protected: 90 ThreadableLoader() { } 91 virtual ~ThreadableLoader() { } 92 virtual void refThreadableLoader() = 0; 93 virtual void derefThreadableLoader() = 0; 94 }; 95 96} // namespace WebCore 97 98#endif // ThreadableLoader_h 99