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 JSMessagePortCustom_h 32 #define JSMessagePortCustom_h 33 34 #include "MessagePort.h" 35 #include <runtime/JSValue.h> 36 37 namespace WebCore { 38 39 typedef int ExceptionCode; 40 41 class String; 42 43 // Helper function which pulls the values out of a JS sequence and into a MessagePortArray. 44 // Also validates the elements per sections 4.1.13 and 4.1.15 of the WebIDL spec and section 8.3.3 of the HTML5 spec. 45 // May generate an exception via the passed ExecState. 46 void fillMessagePortArray(JSC::ExecState*, JSC::JSValue, MessagePortArray&); 47 48 // Helper function to convert from JS postMessage arguments to WebCore postMessage arguments. 49 template <typename T> handlePostMessage(JSC::ExecState * exec,const JSC::ArgList & args,T * impl)50 inline JSC::JSValue handlePostMessage(JSC::ExecState* exec, const JSC::ArgList& args, T* impl) 51 { 52 PassRefPtr<SerializedScriptValue> message = SerializedScriptValue::create(exec, args.at(0)); 53 MessagePortArray portArray; 54 fillMessagePortArray(exec, args.at(1), portArray); 55 if (exec->hadException()) 56 return JSC::jsUndefined(); 57 58 ExceptionCode ec = 0; 59 impl->postMessage(message, &portArray, ec); 60 setDOMException(exec, ec); 61 return JSC::jsUndefined(); 62 } 63 64 } 65 #endif // JSMessagePortCustom_h 66