// static
v8::Handle<v8::Value> WebDevToolsAgentImpl::jsEvaluateOnSelf(const v8::Arguments& args)
{
    String code;
    {
        v8::TryCatch exceptionCatcher;
        code = WebCore::toWebCoreStringWithNullCheck(args[0]);
        if (code.isEmpty() || exceptionCatcher.HasCaught())
            return v8::Undefined();
    }
    WebDevToolsAgentImpl* agent = static_cast<WebDevToolsAgentImpl*>(v8::External::Cast(*args.Data())->Value());
    v8::Context::Scope(agent->m_utilityContext);
    V8Proxy* proxy = V8Proxy::retrieve(agent->m_webViewImpl->page()->mainFrame());
    v8::Local<v8::Value> result = proxy->runScript(v8::Script::Compile(v8::String::New(code.utf8().data())), true);
    return result;
}
Beispiel #2
0
void V8LazyEventListener::prepareListenerObject(ScriptExecutionContext* context)
{
    if (hasExistingListenerObject())
        return;

    if (context->isDocument() && !static_cast<Document*>(context)->contentSecurityPolicy()->allowInlineEventHandlers())
        return;

    v8::HandleScope handleScope;

    V8Proxy* proxy = V8Proxy::retrieve(context);
    if (!proxy)
        return;

    // Use the outer scope to hold context.
    v8::Local<v8::Context> v8Context = worldContext().adjustedContext(proxy);
    // Bail out if we cannot get the context.
    if (v8Context.IsEmpty())
        return;

    v8::Context::Scope scope(v8Context);

    // FIXME: cache the wrapper function.

    // Nodes other than the document object, when executing inline event
    // handlers push document, form, and the target node on the scope chain.
    // We do this by using 'with' statement.
    // See chrome/fast/forms/form-action.html
    //     chrome/fast/forms/selected-index-value.html
    //     base/fast/overflow/onscroll-layer-self-destruct.html
    //
    // Don't use new lines so that lines in the modified handler
    // have the same numbers as in the original code.
    // FIXME: What about m_eventParameterName from JSLazyEventListener?
    // FIXME: This approach is a giant hack! What if m_code escapes to run
    //        arbitrary script?
    String code = "(function (evt) {" \
            "with (this.ownerDocument ? this.ownerDocument : {}) {" \
            "with (this.form ? this.form : {}) {" \
            "with (this) {" \
            "return (function(evt){";
    code.append(m_code);
    // Insert '\n' otherwise //-style comments could break the handler.
    code.append(  "\n}).call(this, evt);}}}})");
    v8::Handle<v8::String> codeExternalString = v8ExternalString(code);
    v8::Handle<v8::Script> script = V8Proxy::compileScript(codeExternalString, m_sourceURL, m_position);
    if (!script.IsEmpty()) {
        v8::Local<v8::Value> value = proxy->runScript(script, false);
        if (!value.IsEmpty()) {
            ASSERT(value->IsFunction());

            v8::Local<v8::Function> wrappedFunction = v8::Local<v8::Function>::Cast(value);

            // Change the toString function on the wrapper function to avoid it
            // returning the source for the actual wrapper function. Instead it
            // returns source for a clean wrapper function with the event
            // argument wrapping the event source code. The reason for this is
            // that some web sites use toString on event functions and eval the
            // source returned (sometimes a RegExp is applied as well) for some
            // other use. That fails miserably if the actual wrapper source is
            // returned.
            v8::Persistent<v8::FunctionTemplate>& toStringTemplate =
                V8BindingPerIsolateData::current()->lazyEventListenerToStringTemplate();
            if (toStringTemplate.IsEmpty())
                toStringTemplate = v8::Persistent<v8::FunctionTemplate>::New(v8::FunctionTemplate::New(V8LazyEventListenerToString));
            v8::Local<v8::Function> toStringFunction;
            if (!toStringTemplate.IsEmpty())
                toStringFunction = toStringTemplate->GetFunction();
            if (!toStringFunction.IsEmpty()) {
                String toStringResult = "function ";
                toStringResult.append(m_functionName);
                toStringResult.append("(");
                toStringResult.append(m_isSVGEvent ? "evt" : "event");
                toStringResult.append(") {\n  ");
                toStringResult.append(m_code);
                toStringResult.append("\n}");
                wrappedFunction->SetHiddenValue(V8HiddenPropertyName::toStringString(), v8ExternalString(toStringResult));
                wrappedFunction->Set(v8::String::New("toString"), toStringFunction);
            }

            wrappedFunction->SetName(v8::String::New(fromWebCoreString(m_functionName), m_functionName.length()));

            setListenerObject(wrappedFunction);
        }
    }
}