V8DocumentCustom.cpp   [plain text]

/*
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 * modification, are permitted provided that the following conditions are
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 * in the documentation and/or other materials provided with the
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
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 */

#include "config.h"
#include "V8Document.h"

#include "CanvasRenderingContext.h"
#include "Document.h"
#include "ExceptionCode.h"
#include "Node.h"
#include "TouchList.h"
#include "XPathNSResolver.h"
#include "XPathResult.h"

#include "V8Binding.h"
#include "V8CanvasRenderingContext2D.h"
#include "V8CustomXPathNSResolver.h"
#include "V8DOMImplementation.h"
#include "V8HTMLDocument.h"
#include "V8IsolatedContext.h"
#include "V8Node.h"
#include "V8Proxy.h"
#include "V8Touch.h"
#include "V8TouchList.h"
#if ENABLE(WEBGL)
#include "V8WebGLRenderingContext.h"
#endif
#include "V8XPathNSResolver.h"
#include "V8XPathResult.h"

#if ENABLE(SVG)
#include "V8SVGDocument.h"
#endif

#include <wtf/RefPtr.h>

namespace WebCore {

v8::Handle<v8::Value> V8Document::evaluateCallback(const v8::Arguments& args)
{
    INC_STATS("DOM.Document.evaluate()");

    RefPtr<Document> document = V8Document::toNative(args.Holder());
    ExceptionCode ec = 0;
    String expression = toWebCoreString(args[0]);
    RefPtr<Node> contextNode;
    if (V8Node::HasInstance(args[1]))
        contextNode = V8Node::toNative(v8::Handle<v8::Object>::Cast(args[1]));

    RefPtr<XPathNSResolver> resolver = V8DOMWrapper::getXPathNSResolver(args[2]);
    if (!resolver && !args[2]->IsNull() && !args[2]->IsUndefined())
        return throwError(TYPE_MISMATCH_ERR);

    int type = toInt32(args[3]);
    RefPtr<XPathResult> inResult;
    if (V8XPathResult::HasInstance(args[4]))
        inResult = V8XPathResult::toNative(v8::Handle<v8::Object>::Cast(args[4]));

    v8::TryCatch exceptionCatcher;
    RefPtr<XPathResult> result = document->evaluate(expression, contextNode.get(), resolver.get(), type, inResult.get(), ec);
    if (exceptionCatcher.HasCaught())
        return throwError(exceptionCatcher.Exception());

    if (ec)
        return throwError(ec);

    return toV8(result.release(), args.GetIsolate());
}

v8::Handle<v8::Value> V8Document::getCSSCanvasContextCallback(const v8::Arguments& args)
{
    INC_STATS("DOM.Document.getCSSCanvasContext");
    v8::Handle<v8::Object> holder = args.Holder();
    Document* imp = V8Document::toNative(holder);
    String contextId = toWebCoreString(args[0]);
    String name = toWebCoreString(args[1]);
    int width = toInt32(args[2]);
    int height = toInt32(args[3]);
    CanvasRenderingContext* result = imp->getCSSCanvasContext(contextId, name, width, height);
    if (!result)
        return v8::Undefined();
    if (result->is2d())
        return toV8(static_cast<CanvasRenderingContext2D*>(result), args.GetIsolate());
#if ENABLE(WEBGL)
    else if (result->is3d())
        return toV8(static_cast<WebGLRenderingContext*>(result), args.GetIsolate());
#endif // ENABLE(WEBGL)
    ASSERT_NOT_REACHED();
    return v8::Undefined();
}

v8::Handle<v8::Value> toV8(Document* impl, v8::Isolate* isolate, bool forceNewObject)
{
    if (!impl)
        return v8::Null();
    if (impl->isHTMLDocument())
        return toV8(static_cast<HTMLDocument*>(impl), isolate, forceNewObject);
#if ENABLE(SVG)
    if (impl->isSVGDocument())
        return toV8(static_cast<SVGDocument*>(impl), isolate, forceNewObject);
#endif
    v8::Handle<v8::Object> wrapper = V8Document::wrap(impl, isolate, forceNewObject);
    if (wrapper.IsEmpty())
        return wrapper;
    if (!V8IsolatedContext::getEntered()) {
        if (V8Proxy* proxy = V8Proxy::retrieve(impl->frame()))
            proxy->windowShell()->updateDocumentWrapper(wrapper);
    }
    return wrapper;
}

#if ENABLE(TOUCH_EVENTS)
v8::Handle<v8::Value> V8Document::createTouchListCallback(const v8::Arguments& args)
{
    RefPtr<TouchList> touchList = TouchList::create();

    for (int i = 0; i < args.Length(); i++) {
        if (!args[i]->IsObject())
            return v8::Undefined();
        touchList->append(V8Touch::toNative(args[i]->ToObject()));
    }

    return toV8(touchList.release(), args.GetIsolate());
}
#endif

} // namespace WebCore