1 /* 2 * Copyright 2009, The Android Open Source Project 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 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #include "config.h" 27 #include "V8CustomPositionErrorCallback.h" 28 29 #if ENABLE(GEOLOCATION) 30 31 #include "ScriptExecutionContext.h" 32 #include "V8CustomVoidCallback.h" // For invokeCallback 33 #include "V8PositionError.h" 34 #include "V8Proxy.h" 35 36 namespace WebCore { 37 38 V8CustomPositionErrorCallback::V8CustomPositionErrorCallback(v8::Local<v8::Object> callback, ScriptExecutionContext* context) 39 : PositionErrorCallback(context) 40 , m_callback(v8::Persistent<v8::Object>::New(callback)) 41 { 42 } 43 44 V8CustomPositionErrorCallback::~V8CustomPositionErrorCallback() 45 { 46 m_callback.Dispose(); 47 } 48 49 void V8CustomPositionErrorCallback::handleEvent(PositionError* error) 50 { 51 v8::HandleScope handleScope; 52 53 // ActiveDOMObject will null our pointer to the ScriptExecutionContext when it goes away. 54 ScriptExecutionContext* scriptContext = scriptExecutionContext(); 55 if (!scriptContext) 56 return; 57 58 // The lookup of the proxy will fail if the Frame has been detached. 59 V8Proxy* proxy = V8Proxy::retrieve(scriptContext); 60 if (!proxy) 61 return; 62 63 v8::Handle<v8::Context> context = proxy->context(); 64 if (context.IsEmpty()) 65 return; 66 67 v8::Context::Scope scope(context); 68 69 v8::Handle<v8::Value> argv[] = { 70 toV8(error) 71 }; 72 73 // Protect the script context until the callback returns. 74 RefPtr<ScriptExecutionContext> protector(scriptContext); 75 76 bool callbackReturnValue = false; 77 invokeCallback(m_callback, 1, argv, callbackReturnValue, scriptContext); 78 } 79 80 } // namespace WebCore 81 82 #endif // ENABLE(GEOLOCATION) 83