1 /*
2 * Copyright (C) 2010 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 #include "config.h"
32
33 #include "JSErrorHandler.h"
34
35 #include "ErrorEvent.h"
36 #include "Event.h"
37 #include "JSEvent.h"
38 #include <runtime/JSLock.h>
39
40 using namespace JSC;
41
42 namespace WebCore {
43
JSErrorHandler(JSObject * function,JSObject * wrapper,bool isAttribute,DOMWrapperWorld * isolatedWorld)44 JSErrorHandler::JSErrorHandler(JSObject* function, JSObject* wrapper, bool isAttribute, DOMWrapperWorld* isolatedWorld)
45 : JSEventListener(function, wrapper, isAttribute, isolatedWorld)
46 {
47 }
48
~JSErrorHandler()49 JSErrorHandler::~JSErrorHandler()
50 {
51 }
52
handleEvent(ScriptExecutionContext * scriptExecutionContext,Event * event)53 void JSErrorHandler::handleEvent(ScriptExecutionContext* scriptExecutionContext, Event* event)
54 {
55 if (!event->isErrorEvent())
56 return JSEventListener::handleEvent(scriptExecutionContext, event);
57
58 ASSERT(scriptExecutionContext);
59 if (!scriptExecutionContext)
60 return;
61
62 ErrorEvent* errorEvent = static_cast<ErrorEvent*>(event);
63
64 JSLock lock(SilenceAssertionsOnly);
65
66 JSObject* jsFunction = this->jsFunction(scriptExecutionContext);
67 if (!jsFunction)
68 return;
69
70 JSDOMGlobalObject* globalObject = toJSDOMGlobalObject(scriptExecutionContext, isolatedWorld());
71 if (!globalObject)
72 return;
73
74 ExecState* exec = globalObject->globalExec();
75
76 CallData callData;
77 CallType callType = jsFunction->getCallData(callData);
78
79 if (callType != CallTypeNone) {
80 RefPtr<JSErrorHandler> protectedctor(this);
81
82 Event* savedEvent = globalObject->currentEvent();
83 globalObject->setCurrentEvent(event);
84
85 MarkedArgumentBuffer args;
86 args.append(jsString(exec, errorEvent->message()));
87 args.append(jsString(exec, errorEvent->filename()));
88 args.append(jsNumber(errorEvent->lineno()));
89
90 JSGlobalData& globalData = globalObject->globalData();
91 DynamicGlobalObjectScope globalObjectScope(globalData, globalData.dynamicGlobalObject ? globalData.dynamicGlobalObject : globalObject);
92
93 JSValue thisValue = globalObject->toThisObject(exec);
94
95 globalData.timeoutChecker.start();
96 JSValue returnValue = JSC::call(exec, jsFunction, callType, callData, thisValue, args);
97 globalData.timeoutChecker.stop();
98
99 globalObject->setCurrentEvent(savedEvent);
100
101 if (exec->hadException())
102 reportCurrentException(exec);
103 else {
104 bool retvalbool;
105 if (returnValue.getBoolean(retvalbool) && !retvalbool)
106 event->preventDefault();
107 }
108 }
109 }
110
111 } // namespace WebCore
112