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1 /* |
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2 * Copyright (C) 2009 Google Inc. All rights reserved. |
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3 * |
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4 * Redistribution and use in source and binary forms, with or without |
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5 * modification, are permitted provided that the following conditions are |
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6 * met: |
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7 * |
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8 * * Redistributions of source code must retain the above copyright |
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9 * notice, this list of conditions and the following disclaimer. |
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10 * * Redistributions in binary form must reproduce the above |
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11 * copyright notice, this list of conditions and the following disclaimer |
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12 * in the documentation and/or other materials provided with the |
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13 * distribution. |
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14 * * Neither the name of Google Inc. nor the names of its |
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15 * contributors may be used to endorse or promote products derived from |
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16 * this software without specific prior written permission. |
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17 * |
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18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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29 */ |
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30 |
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31 #ifndef WebWorkerClientImpl_h |
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32 #define WebWorkerClientImpl_h |
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33 |
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34 #if ENABLE(WORKERS) |
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35 |
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36 #include "WebWorkerClient.h" |
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37 |
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38 #include "WorkerContextProxy.h" |
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39 #include <wtf/PassOwnPtr.h> |
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40 #include <wtf/RefPtr.h> |
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41 |
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42 namespace WebCore { |
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43 class ScriptExecutionContext; |
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44 } |
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45 |
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46 namespace WebKit { |
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47 class WebWorker; |
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48 |
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49 // The purpose of this class is to provide a WorkerContextProxy |
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50 // implementation that we can give to WebKit. Internally, it converts the |
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51 // data types to Chrome compatible ones so that renderer code can use it over |
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52 // IPC. |
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53 class WebWorkerClientImpl : public WebCore::WorkerContextProxy |
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54 , public WebWorkerClient { |
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55 public: |
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56 WebWorkerClientImpl(WebCore::Worker*); |
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57 |
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58 // WebCore::WorkerContextProxy Factory. |
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59 static WebCore::WorkerContextProxy* createWorkerContextProxy(WebCore::Worker*); |
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60 void setWebWorker(WebWorker*); |
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61 |
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62 // WebCore::WorkerContextProxy methods: |
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63 // These are called on the thread that created the worker. In the renderer |
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64 // process, this will be the main WebKit thread. In the worker process, this |
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65 // will be the thread of the executing worker (not the main WebKit thread). |
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66 virtual void startWorkerContext(const WebCore::KURL&, |
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67 const WebCore::String&, |
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68 const WebCore::String&); |
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69 virtual void terminateWorkerContext(); |
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70 virtual void postMessageToWorkerContext( |
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71 PassRefPtr<WebCore::SerializedScriptValue> message, |
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72 PassOwnPtr<WebCore::MessagePortChannelArray> channels); |
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73 virtual bool hasPendingActivity() const; |
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74 virtual void workerObjectDestroyed(); |
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75 |
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76 // WebWorkerClient methods: |
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77 // These are called on the main WebKit thread. |
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78 virtual void postMessageToWorkerObject(const WebString&, const WebMessagePortChannelArray&); |
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79 virtual void postExceptionToWorkerObject(const WebString&, int, const WebString&); |
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80 |
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81 // FIXME: the below is for compatibility only and should be |
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82 // removed once Chromium is updated to remove message |
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83 // destination parameter <http://webkit.org/b/37155>. |
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84 virtual void postConsoleMessageToWorkerObject(int, int, int, int, const WebString&, int, const WebString&); |
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85 virtual void postConsoleMessageToWorkerObject(int, int, int, const WebString&, int, const WebString&); |
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86 virtual void confirmMessageFromWorkerObject(bool); |
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87 virtual void reportPendingActivity(bool); |
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88 virtual void workerContextClosed(); |
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89 virtual void workerContextDestroyed(); |
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90 virtual WebWorker* createWorker(WebWorkerClient*) { return 0; } |
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91 virtual WebNotificationPresenter* notificationPresenter() |
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92 { |
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93 // FIXME: Notifications not yet supported in workers. |
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94 return 0; |
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95 } |
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96 virtual WebApplicationCacheHost* createApplicationCacheHost(WebApplicationCacheHostClient*) { return 0; } |
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97 virtual bool allowDatabase(WebFrame*, const WebString& name, const WebString& displayName, unsigned long estimatedSize) |
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98 { |
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99 ASSERT_NOT_REACHED(); |
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100 return true; |
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101 } |
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102 |
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103 private: |
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104 virtual ~WebWorkerClientImpl(); |
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105 |
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106 // Methods used to support WebWorkerClientImpl being constructed on worker |
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107 // threads. |
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108 // These tasks are dispatched on the WebKit thread. |
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109 static void startWorkerContextTask(WebCore::ScriptExecutionContext* context, |
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110 WebWorkerClientImpl* thisPtr, |
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111 const WebCore::String& scriptURL, |
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112 const WebCore::String& userAgent, |
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113 const WebCore::String& sourceCode); |
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114 static void terminateWorkerContextTask(WebCore::ScriptExecutionContext* context, |
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115 WebWorkerClientImpl* thisPtr); |
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116 static void postMessageToWorkerContextTask(WebCore::ScriptExecutionContext* context, |
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117 WebWorkerClientImpl* thisPtr, |
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118 const WebCore::String& message, |
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119 PassOwnPtr<WebCore::MessagePortChannelArray> channels); |
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120 static void workerObjectDestroyedTask(WebCore::ScriptExecutionContext* context, |
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121 WebWorkerClientImpl* thisPtr); |
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122 |
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123 // These tasks are dispatched on the thread that created the worker (i.e. |
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124 // main WebKit thread in renderer process, and the worker thread in the |
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125 // worker process). |
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126 static void postMessageToWorkerObjectTask(WebCore::ScriptExecutionContext* context, |
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127 WebWorkerClientImpl* thisPtr, |
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128 const WebCore::String& message, |
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129 PassOwnPtr<WebCore::MessagePortChannelArray> channels); |
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130 static void postExceptionToWorkerObjectTask(WebCore::ScriptExecutionContext* context, |
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131 WebWorkerClientImpl* thisPtr, |
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132 const WebCore::String& message, |
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133 int lineNumber, |
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134 const WebCore::String& sourceURL); |
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135 static void postConsoleMessageToWorkerObjectTask(WebCore::ScriptExecutionContext* context, |
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136 WebWorkerClientImpl* thisPtr, |
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137 int sourceId, |
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138 int messageType, |
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139 int messageLevel, |
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140 const WebCore::String& message, |
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141 int lineNumber, |
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142 const WebCore::String& sourceURL); |
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143 static void confirmMessageFromWorkerObjectTask(WebCore::ScriptExecutionContext* context, |
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144 WebWorkerClientImpl* thisPtr); |
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145 static void reportPendingActivityTask(WebCore::ScriptExecutionContext* context, |
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146 WebWorkerClientImpl* thisPtr, |
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147 bool hasPendingActivity); |
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148 |
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149 // Guard against context from being destroyed before a worker exits. |
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150 RefPtr<WebCore::ScriptExecutionContext> m_scriptExecutionContext; |
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151 |
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152 WebCore::Worker* m_worker; |
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153 WebWorker* m_webWorker; |
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154 bool m_askedToTerminate; |
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155 unsigned m_unconfirmedMessageCount; |
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156 bool m_workerContextHadPendingActivity; |
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157 ThreadIdentifier m_workerThreadId; |
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158 }; |
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159 |
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160 } // namespace WebKit; |
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161 |
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162 #endif // ENABLE(WORKERS) |
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163 |
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164 #endif |