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      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 #include "bindings/v8/V8ErrorHandler.h"
     33 
     34 #include "V8ErrorEvent.h"
     35 #include "bindings/v8/ScriptController.h"
     36 #include "bindings/v8/V8Binding.h"
     37 #include "bindings/v8/V8HiddenPropertyName.h"
     38 #include "bindings/v8/V8ScriptRunner.h"
     39 #include "core/dom/Document.h"
     40 #include "core/dom/ExecutionContext.h"
     41 #include "core/events/ErrorEvent.h"
     42 #include "core/events/ThreadLocalEventNames.h"
     43 #include "core/frame/Frame.h"
     44 
     45 namespace WebCore {
     46 
     47 V8ErrorHandler::V8ErrorHandler(v8::Local<v8::Object> listener, bool isInline, v8::Isolate* isolate)
     48     : V8EventListener(listener, isInline, isolate)
     49 {
     50 }
     51 
     52 v8::Local<v8::Value> V8ErrorHandler::callListenerFunction(ExecutionContext* context, v8::Handle<v8::Value> jsEvent, Event* event)
     53 {
     54     if (!event->hasInterface(EventNames::ErrorEvent))
     55         return V8EventListener::callListenerFunction(context, jsEvent, event);
     56 
     57     ErrorEvent* errorEvent = static_cast<ErrorEvent*>(event);
     58 
     59     v8::Isolate* isolate = toV8Context(context, world())->GetIsolate();
     60     if (errorEvent->world() && errorEvent->world() != world())
     61         return v8::Null(isolate);
     62 
     63     v8::Local<v8::Object> listener = getListenerObject(context);
     64     v8::Local<v8::Value> returnValue;
     65     if (!listener.IsEmpty() && listener->IsFunction()) {
     66         v8::Local<v8::Function> callFunction = v8::Local<v8::Function>::Cast(listener);
     67         v8::Local<v8::Object> thisValue = isolate->GetCurrentContext()->Global();
     68 
     69         v8::Local<v8::Value> error = jsEvent->ToObject()->GetHiddenValue(V8HiddenPropertyName::error(isolate));
     70         if (error.IsEmpty())
     71             error = v8::Null(isolate);
     72 
     73         v8::Handle<v8::Value> parameters[5] = { v8String(isolate, errorEvent->message()), v8String(isolate, errorEvent->filename()), v8::Integer::New(errorEvent->lineno(), isolate), v8::Integer::New(errorEvent->colno(), isolate), error };
     74         v8::TryCatch tryCatch;
     75         tryCatch.SetVerbose(true);
     76         if (worldType(isolate) == WorkerWorld)
     77             returnValue = V8ScriptRunner::callFunction(callFunction, context, thisValue, WTF_ARRAY_LENGTH(parameters), parameters, isolate);
     78         else
     79             returnValue = ScriptController::callFunction(context, callFunction, thisValue, WTF_ARRAY_LENGTH(parameters), parameters, isolate);
     80     }
     81     return returnValue;
     82 }
     83 
     84 // static
     85 void V8ErrorHandler::storeExceptionOnErrorEventWrapper(ErrorEvent* event, v8::Handle<v8::Value> data, v8::Isolate* isolate)
     86 {
     87     v8::Local<v8::Value> wrappedEvent = toV8(event, v8::Handle<v8::Object>(), isolate);
     88     if (!wrappedEvent.IsEmpty()) {
     89         ASSERT(wrappedEvent->IsObject());
     90         v8::Local<v8::Object>::Cast(wrappedEvent)->SetHiddenValue(V8HiddenPropertyName::error(isolate), data);
     91     }
     92 }
     93 
     94 bool V8ErrorHandler::shouldPreventDefault(v8::Local<v8::Value> returnValue)
     95 {
     96     return returnValue->IsBoolean() && returnValue->BooleanValue();
     97 }
     98 
     99 } // namespace WebCore
    100