gecko/dom/base/nsPluginArray.h

124 lines
3.3 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsPluginArray_h___
#define nsPluginArray_h___
#include "nsCOMPtr.h"
#include "nsIDOMPluginArray.h"
#include "nsIDOMPlugin.h"
#include "nsIPluginHost.h"
#include "nsIURL.h"
#include "nsWeakReference.h"
#include "nsIObserver.h"
namespace mozilla {
namespace dom {
class Navigator;
} // namespace dom
} // namespace mozilla
class nsIDocShell;
// NB: Due to weak references, Navigator has intimate knowledge of our
// internals.
class nsPluginArray : public nsIDOMPluginArray
, public nsIObserver
, public nsSupportsWeakReference
{
public:
nsPluginArray(mozilla::dom::Navigator* navigator, nsIDocShell *aDocShell);
virtual ~nsPluginArray();
NS_DECL_ISUPPORTS
// nsIDOMPluginArray
NS_DECL_NSIDOMPLUGINARRAY
// nsIObserver
NS_DECL_NSIOBSERVER
// nsPluginArray registers itself as an observer with a weak reference.
// This can't be done in the constructor, because at that point its
// refcount is 0 (and it gets destroyed upon registration). So, Init()
// must be called after construction.
void Init();
nsresult GetPluginHost(nsIPluginHost** aPluginHost);
nsIDOMPlugin* GetItemAt(uint32_t aIndex, nsresult* aResult);
nsIDOMPlugin* GetNamedItem(const nsAString& aName, nsresult* aResult);
static nsPluginArray* FromSupports(nsISupports* aSupports)
{
#ifdef DEBUG
{
nsCOMPtr<nsIDOMPluginArray> array_qi = do_QueryInterface(aSupports);
// If this assertion fires the QI implementation for the object in
// question doesn't use the nsIDOMPluginArray pointer as the nsISupports
// pointer. That must be fixed, or we'll crash...
NS_ASSERTION(array_qi == static_cast<nsIDOMPluginArray*>(aSupports),
"Uh, fix QI!");
}
#endif
return static_cast<nsPluginArray*>(static_cast<nsIDOMPluginArray*>(aSupports));
}
private:
nsresult GetPlugins();
bool AllowPlugins();
public:
void Invalidate();
protected:
mozilla::dom::Navigator* mNavigator;
nsCOMPtr<nsIPluginHost> mPluginHost;
uint32_t mPluginCount;
nsIDOMPlugin** mPluginArray;
nsWeakPtr mDocShell;
};
class nsPluginElement : public nsIDOMPlugin
{
public:
nsPluginElement(nsIDOMPlugin* plugin);
virtual ~nsPluginElement();
NS_DECL_ISUPPORTS
NS_DECL_NSIDOMPLUGIN
nsIDOMMimeType* GetItemAt(uint32_t aIndex, nsresult* aResult);
nsIDOMMimeType* GetNamedItem(const nsAString& aName, nsresult* aResult);
static nsPluginElement* FromSupports(nsISupports* aSupports)
{
#ifdef DEBUG
{
nsCOMPtr<nsIDOMPlugin> plugin_qi = do_QueryInterface(aSupports);
// If this assertion fires the QI implementation for the object in
// question doesn't use the nsIDOMPlugin pointer as the nsISupports
// pointer. That must be fixed, or we'll crash...
NS_ASSERTION(plugin_qi == static_cast<nsIDOMPlugin*>(aSupports),
"Uh, fix QI!");
}
#endif
return static_cast<nsPluginElement*>(aSupports);
}
private:
nsresult GetMimeTypes();
protected:
nsIDOMPlugin* mPlugin;
uint32_t mMimeTypeCount;
nsIDOMMimeType** mMimeTypeArray;
};
#endif /* nsPluginArray_h___ */