1 /* 2 * Copyright (C) 2007, 2009 Apple 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 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 14 * its contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef WorkQueueItem_h 30 #define WorkQueueItem_h 31 32 #include <JavaScriptCore/JSRetainPtr.h> 33 #include <JavaScriptCore/JSBase.h> 34 35 class WorkQueueItem { 36 public: 37 virtual ~WorkQueueItem() { } 38 virtual bool invoke() const = 0; // Returns true if this started a load. 39 }; 40 41 class LoadItem : public WorkQueueItem { 42 public: 43 LoadItem(const JSStringRef url, const JSStringRef target) 44 : m_url(url) 45 , m_target(target) 46 { 47 } 48 49 private: 50 virtual bool invoke() const; 51 52 JSRetainPtr<JSStringRef> m_url; 53 JSRetainPtr<JSStringRef> m_target; 54 }; 55 56 class LoadHTMLStringItem : public WorkQueueItem { 57 public: 58 LoadHTMLStringItem(const JSStringRef content, const JSStringRef baseURL) 59 : m_content(content) 60 , m_baseURL(baseURL) 61 { 62 } 63 64 LoadHTMLStringItem(const JSStringRef content, const JSStringRef baseURL, const JSStringRef unreachableURL) 65 : m_content(content) 66 , m_baseURL(baseURL) 67 , m_unreachableURL(unreachableURL) 68 { 69 } 70 71 private: 72 virtual bool invoke() const; 73 74 JSRetainPtr<JSStringRef> m_content; 75 JSRetainPtr<JSStringRef> m_baseURL; 76 JSRetainPtr<JSStringRef> m_unreachableURL; 77 }; 78 79 class ReloadItem : public WorkQueueItem { 80 private: 81 virtual bool invoke() const; 82 }; 83 84 class ScriptItem : public WorkQueueItem { 85 protected: 86 ScriptItem(const JSStringRef script) 87 : m_script(script) 88 { 89 } 90 91 protected: 92 virtual bool invoke() const; 93 94 private: 95 JSRetainPtr<JSStringRef> m_script; 96 }; 97 98 class LoadingScriptItem : public ScriptItem { 99 public: 100 LoadingScriptItem(const JSStringRef script) 101 : ScriptItem(script) 102 { 103 } 104 105 private: 106 virtual bool invoke() const { return ScriptItem::invoke(); } 107 }; 108 109 class NonLoadingScriptItem : public ScriptItem { 110 public: 111 NonLoadingScriptItem(const JSStringRef script) 112 : ScriptItem(script) 113 { 114 } 115 116 private: 117 virtual bool invoke() const { ScriptItem::invoke(); return false; } 118 }; 119 120 class BackForwardItem : public WorkQueueItem { 121 protected: 122 BackForwardItem(int howFar) 123 : m_howFar(howFar) 124 { 125 } 126 127 private: 128 virtual bool invoke() const; 129 130 int m_howFar; 131 }; 132 133 class BackItem : public BackForwardItem { 134 public: 135 BackItem(unsigned howFar) 136 : BackForwardItem(-howFar) 137 { 138 } 139 }; 140 141 class ForwardItem : public BackForwardItem { 142 public: 143 ForwardItem(unsigned howFar) 144 : BackForwardItem(howFar) 145 { 146 } 147 }; 148 149 #endif // !defined(WorkQueueItem_h) 150