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/*
* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
* Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include "JSPluginElementFunctions.h"
#include "BridgeJSC.h"
#include "HTMLNames.h"
#include "HTMLPlugInElement.h"
#include "JSHTMLElement.h"
#include "PluginViewBase.h"
using namespace JSC;
namespace WebCore {
using namespace Bindings;
using namespace HTMLNames;
// Runtime object support code for JSHTMLAppletElement, JSHTMLEmbedElement and JSHTMLObjectElement.
static inline bool isPluginElement(Node* node)
{
return node->hasTagName(objectTag) || node->hasTagName(embedTag) || node->hasTagName(appletTag);
}
Instance* pluginInstance(Node* node)
{
if (!node)
return 0;
if (!isPluginElement(node))
return 0;
HTMLPlugInElement* plugInElement = static_cast<HTMLPlugInElement*>(node);
// The plugin element holds an owning reference, so we don't have to.
Instance* instance = plugInElement->getInstance().get();
if (!instance || !instance->rootObject())
return 0;
return instance;
}
static JSObject* pluginScriptObjectFromPluginViewBase(HTMLPlugInElement* pluginElement, JSGlobalObject* globalObject)
{
Widget* pluginWidget = pluginElement->pluginWidget();
if (!pluginWidget)
return 0;
if (!pluginWidget->isPluginViewBase())
return 0;
PluginViewBase* pluginViewBase = static_cast<PluginViewBase*>(pluginWidget);
return pluginViewBase->scriptObject(globalObject);
}
static JSObject* pluginScriptObjectFromPluginViewBase(JSHTMLElement* jsHTMLElement)
{
HTMLElement* element = jsHTMLElement->impl();
if (!isPluginElement(element))
return 0;
HTMLPlugInElement* pluginElement = static_cast<HTMLPlugInElement*>(element);
return pluginScriptObjectFromPluginViewBase(pluginElement, jsHTMLElement->globalObject());
}
JSObject* pluginScriptObject(ExecState* exec, JSHTMLElement* jsHTMLElement)
{
HTMLElement* element = jsHTMLElement->impl();
if (!isPluginElement(element))
return 0;
HTMLPlugInElement* pluginElement = static_cast<HTMLPlugInElement*>(element);
// First, see if we can ask the plug-in view for its script object.
if (JSObject* scriptObject = pluginScriptObjectFromPluginViewBase(pluginElement, jsHTMLElement->globalObject()))
return scriptObject;
// Otherwise, fall back to getting the object from the instance.
// The plugin element holds an owning reference, so we don't have to.
Instance* instance = pluginElement->getInstance().get();
if (!instance || !instance->rootObject())
return 0;
return instance->createRuntimeObject(exec);
}
JSValue runtimeObjectPropertyGetter(ExecState* exec, JSValue slotBase, const Identifier& propertyName)
{
JSHTMLElement* element = static_cast<JSHTMLElement*>(asObject(slotBase));
JSObject* scriptObject = pluginScriptObject(exec, element);
if (!scriptObject)
return jsUndefined();
return scriptObject->get(exec, propertyName);
}
bool runtimeObjectCustomGetOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot, JSHTMLElement* element)
{
JSObject* scriptObject = pluginScriptObject(exec, element);
if (!scriptObject)
return false;
if (!scriptObject->hasProperty(exec, propertyName))
return false;
slot.setCustom(element, runtimeObjectPropertyGetter);
return true;
}
bool runtimeObjectCustomGetOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor, JSHTMLElement* element)
{
JSObject* scriptObject = pluginScriptObject(exec, element);
if (!scriptObject)
return false;
if (!scriptObject->hasProperty(exec, propertyName))
return false;
PropertySlot slot;
slot.setCustom(element, runtimeObjectPropertyGetter);
// While we don't know what the plugin allows, we do know that we prevent
// enumeration or deletion of properties, so we mark plugin properties
// as DontEnum | DontDelete
descriptor.setDescriptor(slot.getValue(exec, propertyName), DontEnum | DontDelete);
return true;
}
bool runtimeObjectCustomPut(ExecState* exec, const Identifier& propertyName, JSValue value, JSHTMLElement* element, PutPropertySlot& slot)
{
JSObject* scriptObject = pluginScriptObject(exec, element);
if (!scriptObject)
return 0;
if (!scriptObject->hasProperty(exec, propertyName))
return false;
scriptObject->put(exec, propertyName, value, slot);
return true;
}
static EncodedJSValue JSC_HOST_CALL callPlugin(ExecState* exec)
{
JSHTMLElement* element = static_cast<JSHTMLElement*>(exec->callee());
// Get the plug-in script object.
JSObject* scriptObject = pluginScriptObject(exec, element);
ASSERT(scriptObject);
size_t argumentCount = exec->argumentCount();
MarkedArgumentBuffer argumentList;
for (size_t i = 0; i < argumentCount; i++)
argumentList.append(exec->argument(i));
CallData callData;
CallType callType = getCallData(scriptObject, callData);
ASSERT(callType == CallTypeHost);
// Call the object.
JSValue result = call(exec, scriptObject, callType, callData, exec->hostThisValue(), argumentList);
return JSValue::encode(result);
}
CallType runtimeObjectGetCallData(JSHTMLElement* element, CallData& callData)
{
// First, ask the plug-in view base for its runtime object.
if (JSObject* scriptObject = pluginScriptObjectFromPluginViewBase(element)) {
CallData scriptObjectCallData;
if (scriptObject->getCallData(scriptObjectCallData) == CallTypeNone)
return CallTypeNone;
callData.native.function = callPlugin;
return CallTypeHost;
}
Instance* instance = pluginInstance(element->impl());
if (!instance || !instance->supportsInvokeDefaultMethod())
return CallTypeNone;
callData.native.function = callPlugin;
return CallTypeHost;
}
} // namespace WebCore
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