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/**
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2000 Stefan Schimanski (1Stein@gmx.de)
* Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "HTMLPlugInElement.h"
#include "Attribute.h"
#include "Chrome.h"
#include "ChromeClient.h"
#include "CSSPropertyNames.h"
#include "Document.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "FrameTree.h"
#include "HTMLNames.h"
#include "Page.h"
#include "RenderEmbeddedObject.h"
#include "RenderWidget.h"
#include "ScriptController.h"
#include "Settings.h"
#include "Widget.h"
#if ENABLE(NETSCAPE_PLUGIN_API)
#include "npruntime_impl.h"
#endif
namespace WebCore {
using namespace HTMLNames;
HTMLPlugInElement::HTMLPlugInElement(const QualifiedName& tagName, Document* doc)
: HTMLFrameOwnerElement(tagName, doc)
, m_inBeforeLoadEventHandler(false)
#if ENABLE(NETSCAPE_PLUGIN_API)
, m_NPObject(0)
#endif
, m_isCapturingMouseEvents(false)
{
}
HTMLPlugInElement::~HTMLPlugInElement()
{
ASSERT(!m_instance); // cleared in detach()
#if ENABLE(NETSCAPE_PLUGIN_API)
if (m_NPObject) {
_NPN_ReleaseObject(m_NPObject);
m_NPObject = 0;
}
#endif
}
void HTMLPlugInElement::detach()
{
m_instance.clear();
if (m_isCapturingMouseEvents) {
if (Frame* frame = document()->frame())
frame->eventHandler()->setCapturingMouseEventsNode(0);
m_isCapturingMouseEvents = false;
}
HTMLFrameOwnerElement::detach();
}
PassScriptInstance HTMLPlugInElement::getInstance() const
{
Frame* frame = document()->frame();
if (!frame)
return 0;
// If the host dynamically turns off JavaScript (or Java) we will still return
// the cached allocated Bindings::Instance. Not supporting this edge-case is OK.
if (m_instance)
return m_instance;
if (Widget* widget = pluginWidget())
m_instance = frame->script()->createScriptInstanceForWidget(widget);
return m_instance;
}
Widget* HTMLPlugInElement::pluginWidget() const
{
if (m_inBeforeLoadEventHandler) {
// The plug-in hasn't loaded yet, and it makes no sense to try to load if beforeload handler happened to touch the plug-in element.
// That would recursively call beforeload for the same element.
return 0;
}
RenderWidget* renderWidget = renderWidgetForJSBindings();
if (!renderWidget)
return 0;
return renderWidget->widget();
}
bool HTMLPlugInElement::mapToEntry(const QualifiedName& attrName, MappedAttributeEntry& result) const
{
if (attrName == widthAttr ||
attrName == heightAttr ||
attrName == vspaceAttr ||
attrName == hspaceAttr) {
result = eUniversal;
return false;
}
if (attrName == alignAttr) {
result = eReplaced; // Share with <img> since the alignment behavior is the same.
return false;
}
return HTMLFrameOwnerElement::mapToEntry(attrName, result);
}
void HTMLPlugInElement::parseMappedAttribute(Attribute* attr)
{
if (attr->name() == widthAttr)
addCSSLength(attr, CSSPropertyWidth, attr->value());
else if (attr->name() == heightAttr)
addCSSLength(attr, CSSPropertyHeight, attr->value());
else if (attr->name() == vspaceAttr) {
addCSSLength(attr, CSSPropertyMarginTop, attr->value());
addCSSLength(attr, CSSPropertyMarginBottom, attr->value());
} else if (attr->name() == hspaceAttr) {
addCSSLength(attr, CSSPropertyMarginLeft, attr->value());
addCSSLength(attr, CSSPropertyMarginRight, attr->value());
} else if (attr->name() == alignAttr)
addHTMLAlignment(attr);
else
HTMLFrameOwnerElement::parseMappedAttribute(attr);
}
void HTMLPlugInElement::defaultEventHandler(Event* event)
{
// Firefox seems to use a fake event listener to dispatch events to plug-in (tested with mouse events only).
// This is observable via different order of events - in Firefox, event listeners specified in HTML attributes fires first, then an event
// gets dispatched to plug-in, and only then other event listeners fire. Hopefully, this difference does not matter in practice.
// FIXME: Mouse down and scroll events are passed down to plug-in via custom code in EventHandler; these code paths should be united.
RenderObject* r = renderer();
if (r && r->isEmbeddedObject() && toRenderEmbeddedObject(r)->showsMissingPluginIndicator()) {
toRenderEmbeddedObject(r)->handleMissingPluginIndicatorEvent(event);
return;
}
if (!r || !r->isWidget())
return;
RefPtr<Widget> widget = toRenderWidget(r)->widget();
if (!widget)
return;
widget->handleEvent(event);
}
#if ENABLE(NETSCAPE_PLUGIN_API)
NPObject* HTMLPlugInElement::getNPObject()
{
ASSERT(document()->frame());
if (!m_NPObject)
m_NPObject = document()->frame()->script()->createScriptObjectForPluginElement(this);
return m_NPObject;
}
#endif /* ENABLE(NETSCAPE_PLUGIN_API) */
#if PLATFORM(ANDROID)
bool HTMLPlugInElement::supportsFocus() const
{
return true;
}
#endif
}
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