gecko-dev/dom/base/nsPluginArray.h

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "nsTArray.h"
#include "nsWeakReference.h"
#include "nsIObserver.h"
#include "nsWrapperCache.h"
#include "nsPIDOMWindow.h"
#include "mozilla/dom/BindingDeclarations.h"

class nsPluginElement;
class nsMimeType;
class nsIInternalPluginTag;

class nsPluginArray final : public nsIObserver,
                            public nsSupportsWeakReference,
                            public nsWrapperCache {
 public:
  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_AMBIGUOUS(nsPluginArray,
                                                         nsIObserver)

  // nsIObserver
  NS_DECL_NSIOBSERVER

  explicit nsPluginArray(nsPIDOMWindowInner* aWindow);
  nsPIDOMWindowInner* GetParentObject() const;
  virtual JSObject* WrapObject(JSContext* aCx,
                               JS::Handle<JSObject*> aGivenProto) override;

  // 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();
  void Invalidate();

  void GetMimeTypes(nsTArray<RefPtr<nsMimeType>>& aMimeTypes);
  void GetCTPMimeTypes(nsTArray<RefPtr<nsMimeType>>& aMimeTypes);

  static void NotifyHiddenPluginTouched(nsPluginElement* aElement);

  // PluginArray WebIDL methods

  nsPluginElement* Item(uint32_t aIndex, mozilla::dom::CallerType aCallerType);
  nsPluginElement* NamedItem(const nsAString& aName,
                             mozilla::dom::CallerType aCallerType);
  void Refresh(bool aReloadDocuments);
  nsPluginElement* IndexedGetter(uint32_t aIndex, bool& aFound,
                                 mozilla::dom::CallerType aCallerType);
  nsPluginElement* NamedGetter(const nsAString& aName, bool& aFound,
                               mozilla::dom::CallerType aCallerType);
  uint32_t Length(mozilla::dom::CallerType aCallerType);
  void GetSupportedNames(nsTArray<nsString>& aRetval,
                         mozilla::dom::CallerType aCallerType);

 private:
  virtual ~nsPluginArray();

  bool AllowPlugins() const;
  void EnsurePlugins();

  nsCOMPtr<nsPIDOMWindowInner> mWindow;
  nsTArray<RefPtr<nsPluginElement>> mPlugins;
  /* A separate list of click-to-play plugins that we don't tell content
   * about but keep track of so we can still prompt the user to click to play.
   */
  nsTArray<RefPtr<nsPluginElement>> mCTPPlugins;
};

class nsPluginElement final : public nsISupports, public nsWrapperCache {
 public:
  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(nsPluginElement)

  nsPluginElement(nsPIDOMWindowInner* aWindow,
                  nsIInternalPluginTag* aPluginTag);

  nsPIDOMWindowInner* GetParentObject() const;
  virtual JSObject* WrapObject(JSContext* aCx,
                               JS::Handle<JSObject*> aGivenProto) override;

  nsIInternalPluginTag* PluginTag() const { return mPluginTag; }

  // Plugin WebIDL methods

  void GetDescription(nsString& retval) const;
  void GetFilename(nsString& retval) const;
  void GetVersion(nsString& retval) const;
  void GetName(nsString& retval) const;
  nsMimeType* Item(uint32_t index);
  nsMimeType* NamedItem(const nsAString& name);
  nsMimeType* IndexedGetter(uint32_t index, bool& found);
  nsMimeType* NamedGetter(const nsAString& name, bool& found);
  uint32_t Length();
  void GetSupportedNames(nsTArray<nsString>& retval);

  nsTArray<RefPtr<nsMimeType>>& MimeTypes();

 protected:
  ~nsPluginElement();

  void EnsurePluginMimeTypes();

  nsCOMPtr<nsPIDOMWindowInner> mWindow;
  nsCOMPtr<nsIInternalPluginTag> mPluginTag;
  nsTArray<RefPtr<nsMimeType>> mMimeTypes;
};

#endif /* nsPluginArray_h___ */