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/*
* Copyright (C) 2009 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "WebBindings.h"
#include "npruntime_priv.h"
#include "webkit/api/public/WebDragData.h"
#if USE(V8_BINDING)
#include "ChromiumDataObject.h"
#include "ClipboardChromium.h"
#include "EventNames.h"
#include "MouseEvent.h"
#include "NPV8Object.h" // for PrivateIdentifier
#include "V8Helpers.h"
#include "V8Proxy.h"
#elif USE(JAVASCRIPTCORE_BINDINGS)
#include "bridge/c/c_utility.h"
#endif
#if USE(JAVASCRIPTCORE_BINDINGS)
using JSC::Bindings::PrivateIdentifier;
#endif
using namespace WebCore;
namespace WebKit {
NPObject* WebBindings::createObject(NPP npp, NPClass* npClass)
{
return NPN_CreateObject(npp, npClass);
}
NPIdentifier WebBindings::getIntIdentifier(int32_t number)
{
return NPN_GetIntIdentifier(number);
}
bool WebBindings::getProperty(NPP npp, NPObject* obj, NPIdentifier propertyName, NPVariant *result)
{
return NPN_GetProperty(npp, obj, propertyName, result);
}
NPIdentifier WebBindings::getStringIdentifier(const NPUTF8* string)
{
return NPN_GetStringIdentifier(string);
}
bool WebBindings::hasMethod(NPP npp, NPObject* npObject, NPIdentifier methodName)
{
return NPN_HasMethod(npp, npObject, methodName);
}
bool WebBindings::hasProperty(NPP npp, NPObject* npObject, NPIdentifier propertyName)
{
return NPN_HasProperty(npp, npObject, propertyName);
}
void WebBindings::initializeVariantWithStringCopy(NPVariant* variant, const NPString* value)
{
#if USE(V8)
_NPN_InitializeVariantWithStringCopy(variant, value);
#else
NPN_InitializeVariantWithStringCopy(variant, value);
#endif
}
bool WebBindings::invoke(NPP npp, NPObject* npObject, NPIdentifier methodName, const NPVariant* arguments, uint32_t argumentCount, NPVariant* result)
{
return NPN_Invoke(npp, npObject, methodName, arguments, argumentCount, result);
}
void WebBindings::releaseObject(NPObject* npObject)
{
return NPN_ReleaseObject(npObject);
}
void WebBindings::releaseVariantValue(NPVariant* variant)
{
NPN_ReleaseVariantValue(variant);
}
NPObject* WebBindings::retainObject(NPObject* npObject)
{
return NPN_RetainObject(npObject);
}
void WebBindings::unregisterObject(NPObject* npObject)
{
#if USE(V8)
_NPN_UnregisterObject(npObject);
#endif
}
void WebBindings::extractIdentifierData(const NPIdentifier& identifier, const NPUTF8*& string, int32_t& number, bool& isString)
{
PrivateIdentifier* priv = static_cast<PrivateIdentifier*>(identifier);
if (!priv) {
isString = false;
number = 0;
return;
}
isString = priv->isString;
if (isString)
string = priv->value.string;
else
number = priv->value.number;
}
#if USE(V8)
static v8::Local<v8::Value> getEvent(const v8::Handle<v8::Context>& context)
{
static v8::Persistent<v8::String> event(v8::Persistent<v8::String>::New(v8::String::NewSymbol("event")));
return context->Global()->GetHiddenValue(event);
}
static bool getDragDataImpl(NPObject* npobj, int* eventId, WebDragData* data)
{
if (npobj == NULL)
return false;
if (npobj->_class != npScriptObjectClass)
return false;
v8::HandleScope handleScope;
v8::Handle<v8::Context> context = v8::Context::GetEntered();
if (context.IsEmpty())
return false;
// Get the current WebCore event.
v8::Handle<v8::Value> currentEvent(getEvent(context));
Event* event = V8DOMWrapper::convertToNativeEvent(currentEvent);
if (event == NULL)
return false;
// Check that the given npobj is that event.
V8NPObject* object = reinterpret_cast<V8NPObject*>(npobj);
Event* given = V8DOMWrapper::convertToNativeEvent(object->v8Object);
if (given != event)
return false;
// Check the execution frames are same origin.
V8Proxy* current = V8Proxy::retrieve(V8Proxy::retrieveFrameForCurrentContext());
Frame* frame = V8Proxy::retrieveFrame(context);
if (!current || !current->canAccessFrame(frame, false))
return false;
const EventNames& names(eventNames());
const AtomicString& eventType(event->type());
enum DragTargetMouseEventId {
DragEnterId = 1, DragOverId = 2, DragLeaveId = 3, DropId = 4
};
// The event type should be a drag event.
if (eventType == names.dragenterEvent)
*eventId = DragEnterId;
else if (eventType == names.dragoverEvent)
*eventId = DragOverId;
else if (eventType == names.dragleaveEvent)
*eventId = DragLeaveId;
else if (eventType == names.dropEvent)
*eventId = DropId;
else
return false;
// Drag events are mouse events and should have a clipboard.
MouseEvent* me = reinterpret_cast<MouseEvent*>(event);
Clipboard* clipboard = me->clipboard();
if (!clipboard)
return false;
// And that clipboard should be accessible by WebKit policy.
ClipboardChromium* chrome = reinterpret_cast<ClipboardChromium*>(clipboard);
HashSet<String> accessible(chrome->types());
if (accessible.isEmpty())
return false;
RefPtr<ChromiumDataObject> dataObject(chrome->dataObject());
if (dataObject && data)
*data = WebDragData(dataObject);
return dataObject != NULL;
}
#endif
bool WebBindings::getDragData(NPObject* event, int* eventId, WebDragData* data)
{
#if USE(V8)
return getDragDataImpl(event, eventId, data);
#else
// Not supported on other ports (JSC, etc).
return false;
#endif
}
bool WebBindings::isDragEvent(NPObject* event)
{
int eventId;
return getDragData(event, &eventId, NULL);
}
} // namespace WebKit
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