HTMLPlugInElement.cpp [plain text]
#include "config.h"
#include "HTMLPlugInElement.h"
#include "Attribute.h"
#include "BridgeJSC.h"
#include "Chrome.h"
#include "ChromeClient.h"
#include "CSSPropertyNames.h"
#include "Document.h"
#include "Event.h"
#include "EventHandler.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "FrameTree.h"
#include "HTMLNames.h"
#include "Page.h"
#include "PluginViewBase.h"
#include "RenderEmbeddedObject.h"
#include "RenderSnapshottedPlugIn.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)
, m_displayState(Playing)
{
}
HTMLPlugInElement::~HTMLPlugInElement()
{
ASSERT(!m_instance);
#if ENABLE(NETSCAPE_PLUGIN_API)
if (m_NPObject) {
_NPN_ReleaseObject(m_NPObject);
m_NPObject = 0;
}
#endif
}
bool HTMLPlugInElement::canProcessDrag() const
{
const PluginViewBase* plugin = pluginWidget() && pluginWidget()->isPluginViewBase() ? static_cast<const PluginViewBase*>(pluginWidget()) : 0;
return plugin ? plugin->canProcessDrag() : false;
}
bool HTMLPlugInElement::willRespondToMouseClickEvents()
{
if (isDisabledFormControl())
return false;
RenderObject* r = renderer();
if (!r)
return false;
if (!r->isEmbeddedObject() && !r->isWidget())
return false;
return true;
}
void HTMLPlugInElement::detach(const AttachContext& context)
{
m_instance.clear();
if (m_isCapturingMouseEvents) {
if (Frame* frame = document()->frame())
frame->eventHandler()->setCapturingMouseEventsNode(0);
m_isCapturingMouseEvents = false;
}
#if ENABLE(NETSCAPE_PLUGIN_API)
if (m_NPObject) {
_NPN_ReleaseObject(m_NPObject);
m_NPObject = 0;
}
#endif
HTMLFrameOwnerElement::detach(context);
}
void HTMLPlugInElement::resetInstance()
{
m_instance.clear();
}
PassRefPtr<JSC::Bindings::Instance> HTMLPlugInElement::getInstance()
{
Frame* frame = document()->frame();
if (!frame)
return 0;
if (m_instance)
return m_instance;
if (Widget* widget = pluginWidget())
m_instance = frame->script()->createScriptInstanceForWidget(widget);
return m_instance;
}
bool HTMLPlugInElement::guardedDispatchBeforeLoadEvent(const String& sourceURL)
{
m_inBeforeLoadEventHandler = true;
bool beforeLoadAllowedLoad = static_cast<HTMLFrameOwnerElement*>(this)->dispatchBeforeLoadEvent(sourceURL);
m_inBeforeLoadEventHandler = false;
return beforeLoadAllowedLoad;
}
Widget* HTMLPlugInElement::pluginWidget() const
{
if (m_inBeforeLoadEventHandler) {
return 0;
}
RenderWidget* renderWidget = renderWidgetForJSBindings();
if (!renderWidget)
return 0;
return renderWidget->widget();
}
bool HTMLPlugInElement::isPresentationAttribute(const QualifiedName& name) const
{
if (name == widthAttr || name == heightAttr || name == vspaceAttr || name == hspaceAttr || name == alignAttr)
return true;
return HTMLFrameOwnerElement::isPresentationAttribute(name);
}
void HTMLPlugInElement::collectStyleForPresentationAttribute(const QualifiedName& name, const AtomicString& value, MutableStylePropertySet* style)
{
if (name == widthAttr)
addHTMLLengthToStyle(style, CSSPropertyWidth, value);
else if (name == heightAttr)
addHTMLLengthToStyle(style, CSSPropertyHeight, value);
else if (name == vspaceAttr) {
addHTMLLengthToStyle(style, CSSPropertyMarginTop, value);
addHTMLLengthToStyle(style, CSSPropertyMarginBottom, value);
} else if (name == hspaceAttr) {
addHTMLLengthToStyle(style, CSSPropertyMarginLeft, value);
addHTMLLengthToStyle(style, CSSPropertyMarginRight, value);
} else if (name == alignAttr)
applyAlignmentAttributeToStyle(value, style);
else
HTMLFrameOwnerElement::collectStyleForPresentationAttribute(name, value, style);
}
void HTMLPlugInElement::defaultEventHandler(Event* event)
{
RenderObject* r = renderer();
if (r && r->isEmbeddedObject()) {
if (toRenderEmbeddedObject(r)->isPluginUnavailable()) {
toRenderEmbeddedObject(r)->handleUnavailablePluginIndicatorEvent(event);
return;
}
if (r->isSnapshottedPlugIn() && displayState() < Restarting) {
toRenderSnapshottedPlugIn(r)->handleEvent(event);
HTMLFrameOwnerElement::defaultEventHandler(event);
return;
}
if (displayState() < Playing)
return;
}
if (!r || !r->isWidget())
return;
RefPtr<Widget> widget = toRenderWidget(r)->widget();
if (!widget)
return;
widget->handleEvent(event);
if (event->defaultHandled())
return;
HTMLFrameOwnerElement::defaultEventHandler(event);
}
bool HTMLPlugInElement::isKeyboardFocusable(KeyboardEvent* event) const
{
UNUSED_PARAM(event);
if (!document()->page())
return false;
const PluginViewBase* plugin = pluginWidget() && pluginWidget()->isPluginViewBase() ? static_cast<const PluginViewBase*>(pluginWidget()) : 0;
if (plugin)
return plugin->supportsKeyboardFocus();
return false;
}
bool HTMLPlugInElement::isPluginElement() const
{
return true;
}
bool HTMLPlugInElement::supportsFocus() const
{
if (HTMLFrameOwnerElement::supportsFocus())
return true;
if (useFallbackContent() || !renderer() || !renderer()->isEmbeddedObject())
return false;
return !toRenderEmbeddedObject(renderer())->isPluginUnavailable();
}
#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
}