Source/bindings/v8/custom/V8HTMLDocumentCustom.cpp

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#include "config.h"
#include "V8HTMLDocument.h"

#include "HTMLNames.h"
#include "V8DOMWindow.h"
#include "V8HTMLAllCollection.h"
#include "V8HTMLCollection.h"
#include "V8Node.h"
#include "bindings/v8/ScriptController.h"
#include "bindings/v8/V8Binding.h"
#include "bindings/v8/V8DOMWindowShell.h"
#include "bindings/v8/V8RecursionScope.h"
#include "core/html/HTMLAllCollection.h"
#include "core/html/HTMLCollection.h"
#include "core/html/HTMLDocument.h"
#include "core/html/HTMLIFrameElement.h"
#include "core/page/Frame.h"
#include "wtf/OwnArrayPtr.h"
#include "wtf/RefPtr.h"
#include "wtf/StdLibExtras.h"
#include "wtf/text/StringBuilder.h"

namespace WebCore {

v8::Local<v8::Object> V8HTMLDocument::wrapInShadowObject(v8::Local<v8::Object> wrapper, Node* impl, v8::Isolate* isolate)
{
    // This is only for getting a unique pointer which we can pass to privateTemplate.
    static const char* shadowTemplateUniqueKey = "wrapInShadowObjectShadowTemplate";
    WrapperWorldType currentWorldType = worldType(isolate);
    v8::Persistent<v8::FunctionTemplate> shadowTemplate;
    if (!V8PerIsolateData::from(isolate)->hasPrivateTemplate(currentWorldType, &shadowTemplateUniqueKey)) {
        shadowTemplate = v8::Persistent<v8::FunctionTemplate>::New(isolate, v8::FunctionTemplate::New());
        if (shadowTemplate.IsEmpty())
            return v8::Local<v8::Object>();
        shadowTemplate->SetClassName(v8::String::NewSymbol("HTMLDocument"));
        shadowTemplate->Inherit(V8HTMLDocument::GetTemplate(isolate, currentWorldType));
        shadowTemplate->InstanceTemplate()->SetInternalFieldCount(V8HTMLDocument::internalFieldCount);
    } else {
        shadowTemplate = V8PerIsolateData::from(isolate)->privateTemplate(currentWorldType, &shadowTemplateUniqueKey, 0, v8::Handle<v8::Value>(), v8::Handle<v8::Signature>());
    }
    v8::Local<v8::Function> shadowConstructor = shadowTemplate->GetFunction();
    if (shadowConstructor.IsEmpty())
        return v8::Local<v8::Object>();

    v8::Local<v8::Object> shadow;
    {
        V8RecursionScope::MicrotaskSuppression scope;
        shadow = shadowConstructor->NewInstance();
    }
    if (shadow.IsEmpty())
        return v8::Local<v8::Object>();
    shadow->SetPrototype(wrapper);
    V8DOMWrapper::setNativeInfo(wrapper, &V8HTMLDocument::info, impl);
    return shadow;
}

// HTMLDocument ----------------------------------------------------------------

// Concatenates "args" to a string. If args is empty, returns empty string.
// Firefox/Safari/IE support non-standard arguments to document.write, ex:
//   document.write("a", "b", "c") --> document.write("abc")
//   document.write() --> document.write("")
static String writeHelperGetString(const v8::Arguments& args)
{
    StringBuilder builder;
    for (int i = 0; i < args.Length(); ++i)
        builder.append(toWebCoreString(args[i]));
    return builder.toString();
}

v8::Handle<v8::Value> V8HTMLDocument::writeMethodCustom(const v8::Arguments& args)
{
    HTMLDocument* htmlDocument = V8HTMLDocument::toNative(args.Holder());
    htmlDocument->write(writeHelperGetString(args), activeDOMWindow()->document());
    return v8::Undefined();
}

v8::Handle<v8::Value> V8HTMLDocument::writelnMethodCustom(const v8::Arguments& args)
{
    HTMLDocument* htmlDocument = V8HTMLDocument::toNative(args.Holder());
    htmlDocument->writeln(writeHelperGetString(args), activeDOMWindow()->document());
    return v8::Undefined();
}

v8::Handle<v8::Value> V8HTMLDocument::openMethodCustom(const v8::Arguments& args)
{
    HTMLDocument* htmlDocument = V8HTMLDocument::toNative(args.Holder());

    if (args.Length() > 2) {
        if (RefPtr<Frame> frame = htmlDocument->frame()) {
            // Fetch the global object for the frame.
            v8::Local<v8::Context> context = frame->script()->currentWorldContext();
            // Bail out if we cannot get the context.
            if (context.IsEmpty())
                return v8::Undefined();
            v8::Local<v8::Object> global = context->Global();
            // Get the open property of the global object.
            v8::Local<v8::Value> function = global->Get(v8::String::NewSymbol("open"));
            // If the open property is not a function throw a type error.
            if (!function->IsFunction())
                return throwTypeError("open is not a function", args.GetIsolate());
            // Wrap up the arguments and call the function.
            OwnArrayPtr<v8::Local<v8::Value> > params = adoptArrayPtr(new v8::Local<v8::Value>[args.Length()]);
            for (int i = 0; i < args.Length(); i++)
                params[i] = args[i];

            return frame->script()->callFunction(v8::Local<v8::Function>::Cast(function), global, args.Length(), params.get());
        }
    }

    htmlDocument->open(activeDOMWindow()->document());
    return args.Holder();
}

v8::Handle<v8::Object> wrap(HTMLDocument* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
{
    ASSERT(impl);
    v8::Handle<v8::Object> wrapper = V8HTMLDocument::createWrapper(impl, creationContext, isolate);
    if (wrapper.IsEmpty())
        return wrapper;
    if (!isolatedWorldForEnteredContext()) {
        if (Frame* frame = impl->frame())
            frame->script()->windowShell(mainThreadNormalWorld())->updateDocumentWrapper(wrapper);
    }
    return wrapper;
}

} // namespace WebCore