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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/core/v8/V8ErrorHandler.h"
     33 
     34 #include "bindings/core/v8/ScriptController.h"
     35 #include "bindings/core/v8/V8Binding.h"
     36 #include "bindings/core/v8/V8ErrorEvent.h"
     37 #include "bindings/core/v8/V8HiddenValue.h"
     38 #include "bindings/core/v8/V8ScriptRunner.h"
     39 #include "core/dom/ExecutionContext.h"
     40 #include "core/events/ErrorEvent.h"
     41 #include "core/frame/LocalFrame.h"
     42 
     43 namespace blink {
     44 
     45 V8ErrorHandler::V8ErrorHandler(v8::Local<v8::Object> listener, bool isInline, ScriptState* scriptState)
     46     : V8EventListener(listener, isInline, scriptState)
     47 {
     48 }
     49 
     50 v8::Local<v8::Value> V8ErrorHandler::callListenerFunction(v8::Handle<v8::Value> jsEvent, Event* event)
     51 {
     52     if (!event->hasInterface(EventNames::ErrorEvent))
     53         return V8EventListener::callListenerFunction(jsEvent, event);
     54 
     55     ErrorEvent* errorEvent = static_cast<ErrorEvent*>(event);
     56 
     57     if (errorEvent->world() && errorEvent->world() != &world())
     58         return v8::Null(isolate());
     59 
     60     v8::Local<v8::Object> listener = getListenerObject(scriptState()->executionContext());
     61     v8::Local<v8::Value> returnValue;
     62     if (!listener.IsEmpty() && listener->IsFunction()) {
     63         v8::Local<v8::Function> callFunction = v8::Local<v8::Function>::Cast(listener);
     64         v8::Local<v8::Object> thisValue = scriptState()->context()->Global();
     65 
     66         v8::Local<v8::Value> error = V8HiddenValue::getHiddenValue(isolate(), jsEvent->ToObject(), V8HiddenValue::error(isolate()));
     67         if (error.IsEmpty())
     68             error = v8::Null(isolate());
     69 
     70         v8::Handle<v8::Value> parameters[5] = { v8String(isolate(), errorEvent->message()), v8String(isolate(), errorEvent->filename()), v8::Integer::New(isolate(), errorEvent->lineno()), v8::Integer::New(isolate(), errorEvent->colno()), error };
     71         v8::TryCatch tryCatch;
     72         tryCatch.SetVerbose(true);
     73         if (scriptState()->executionContext()->isWorkerGlobalScope())
     74             returnValue = V8ScriptRunner::callFunction(callFunction, scriptState()->executionContext(), thisValue, WTF_ARRAY_LENGTH(parameters), parameters, isolate());
     75         else
     76             returnValue = ScriptController::callFunction(scriptState()->executionContext(), callFunction, thisValue, WTF_ARRAY_LENGTH(parameters), parameters, isolate());
     77     }
     78     return returnValue;
     79 }
     80 
     81 // static
     82 void V8ErrorHandler::storeExceptionOnErrorEventWrapper(ErrorEvent* event, v8::Handle<v8::Value> data, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
     83 {
     84     v8::Local<v8::Value> wrappedEvent = toV8(event, creationContext, isolate);
     85     if (!wrappedEvent.IsEmpty()) {
     86         ASSERT(wrappedEvent->IsObject());
     87         V8HiddenValue::setHiddenValue(isolate, v8::Local<v8::Object>::Cast(wrappedEvent), V8HiddenValue::error(isolate), data);
     88     }
     89 }
     90 
     91 bool V8ErrorHandler::shouldPreventDefault(v8::Local<v8::Value> returnValue)
     92 {
     93     return returnValue->IsBoolean() && returnValue->BooleanValue();
     94 }
     95 
     96 } // namespace blink
     97