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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2004, 2006, 2007, 2008, 2009, 2012 Apple Inc. All rights
* reserved.
*
* 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.
*
*/
#ifndef HTMLPlugInElement_h
#define HTMLPlugInElement_h
#include "bindings/core/v8/SharedPersistent.h"
#include "core/CoreExport.h"
#include "core/html/HTMLFrameOwnerElement.h"
#include <v8.h>
namespace blink {
class HTMLImageLoader;
class LayoutPart;
class LayoutEmbeddedItem;
class Widget;
enum PreferPlugInsForImagesOption {
ShouldPreferPlugInsForImages,
ShouldNotPreferPlugInsForImages
};
class CORE_EXPORT HTMLPlugInElement : public HTMLFrameOwnerElement {
public:
~HTMLPlugInElement() override;
DECLARE_VIRTUAL_TRACE();
void resetInstance();
// TODO(dcheng): Consider removing this, since HTMLEmbedElementLegacyCall
// and HTMLObjectElementLegacyCall usage is extremely low.
SharedPersistent<v8::Object>* pluginWrapper();
Widget* pluginWidget() const;
bool canProcessDrag() const;
const String& url() const { return m_url; }
// Public for FrameView::addPartToUpdate()
bool needsWidgetUpdate() const { return m_needsWidgetUpdate; }
void setNeedsWidgetUpdate(bool needsWidgetUpdate) {
m_needsWidgetUpdate = needsWidgetUpdate;
}
void updateWidget();
bool shouldAccelerate() const;
void requestPluginCreationWithoutLayoutObjectIfPossible();
void createPluginWithoutLayoutObject();
protected:
HTMLPlugInElement(const QualifiedName& tagName,
Document&,
bool createdByParser,
PreferPlugInsForImagesOption);
// Node functions:
void removedFrom(ContainerNode* insertionPoint) override;
void didMoveToNewDocument(Document& oldDocument) override;
// Element functions:
bool isPresentationAttribute(const QualifiedName&) const override;
void collectStyleForPresentationAttribute(const QualifiedName&,
const AtomicString&,
MutableStylePropertySet*) override;
virtual bool hasFallbackContent() const;
virtual bool useFallbackContent() const;
// Create or update the LayoutPart and return it, triggering layout if
// necessary.
virtual LayoutPart* layoutPartForJSBindings() const;
bool isImageType();
bool shouldPreferPlugInsForImages() const {
return m_shouldPreferPlugInsForImages;
}
LayoutEmbeddedItem layoutEmbeddedItem() const;
bool allowedToLoadFrameURL(const String& url);
bool requestObject(const String& url,
const String& mimeType,
const Vector<String>& paramNames,
const Vector<String>& paramValues);
bool shouldUsePlugin(const KURL&,
const String& mimeType,
bool hasFallback,
bool& useFallback);
void dispatchErrorEvent();
void lazyReattachIfNeeded();
String m_serviceType;
String m_url;
KURL m_loadedUrl;
Member<HTMLImageLoader> m_imageLoader;
bool m_isDelayingLoadEvent;
private:
// EventTarget overrides:
void removeAllEventListeners() final;
// Node overrides:
bool canContainRangeEndPoint() const override { return false; }
bool canStartSelection() const override;
bool willRespondToMouseClickEvents() final;
void defaultEventHandler(Event*) final;
void attachLayoutTree(const AttachContext& = AttachContext()) final;
void detachLayoutTree(const AttachContext& = AttachContext()) final;
void finishParsingChildren() final;
// Element overrides:
LayoutObject* createLayoutObject(const ComputedStyle&) override;
bool supportsFocus() const final { return true; }
bool layoutObjectIsFocusable() const final;
bool isKeyboardFocusable() const final;
void didAddUserAgentShadowRoot(ShadowRoot&) final;
// HTMLElement overrides:
bool hasCustomFocusLogic() const override;
bool isPluginElement() const final;
// HTMLFrameOwnerElement overrides:
void disconnectContentFrame() override;
// Return any existing LayoutPart without triggering relayout, or 0 if it
// doesn't yet exist.
virtual LayoutPart* existingLayoutPart() const = 0;
virtual void updateWidgetInternal() = 0;
bool loadPlugin(const KURL&,
const String& mimeType,
const Vector<String>& paramNames,
const Vector<String>& paramValues,
bool useFallback,
bool requireLayoutObject);
// Perform checks after we have determined that a plugin will be used to
// show the object (i.e after allowedToLoadObject).
bool allowedToLoadPlugin(const KURL&, const String& mimeType);
// Perform checks based on the URL and MIME-type of the object to load.
bool allowedToLoadObject(const KURL&, const String& mimeType);
bool wouldLoadAsNetscapePlugin(const String& url, const String& serviceType);
void setPersistedPluginWidget(Widget*);
bool requestObjectInternal(const String& url,
const String& mimeType,
const Vector<String>& paramNames,
const Vector<String>& paramValues);
mutable RefPtr<SharedPersistent<v8::Object>> m_pluginWrapper;
bool m_needsWidgetUpdate;
bool m_shouldPreferPlugInsForImages;
// Represents |layoutObject() && layoutObject()->isEmbeddedObject() &&
// !layoutEmbeddedItem().showsUnavailablePluginIndicator()|. We want to
// avoid accessing |layoutObject()| in layoutObjectIsFocusable().
bool m_pluginIsAvailable = false;
// Normally the Widget is stored in HTMLFrameOwnerElement::m_widget.
// However, plugins can persist even when not rendered. In order to
// prevent confusing code which may assume that widget() != null
// means the frame is active, we save off m_widget here while
// the plugin is persisting but not being displayed.
Member<Widget> m_persistedPluginWidget;
};
inline bool isHTMLPlugInElement(const HTMLElement& element) {
return element.isPluginElement();
}
DEFINE_HTMLELEMENT_TYPE_CASTS_WITH_FUNCTION(HTMLPlugInElement);
} // namespace blink
#endif // HTMLPlugInElement_h
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