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Diffstat (limited to 'dom/commandhandler/nsCommandManager.h')
-rw-r--r-- | dom/commandhandler/nsCommandManager.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/dom/commandhandler/nsCommandManager.h b/dom/commandhandler/nsCommandManager.h new file mode 100644 index 0000000000..77a10e5f35 --- /dev/null +++ b/dom/commandhandler/nsCommandManager.h @@ -0,0 +1,69 @@ +/* -*- 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 nsCommandManager_h__ +#define nsCommandManager_h__ + +#include "nsString.h" +#include "nsClassHashtable.h" +#include "nsWeakReference.h" + +#include "nsICommandManager.h" +#include "nsCycleCollectionParticipant.h" + +class nsIController; +template <class E> +class nsCOMArray; + +class nsCommandManager final : public nsICommandManager, + public nsSupportsWeakReference { + public: + using ObserverList = nsTArray<nsCOMPtr<nsIObserver>>; + + nsCommandManager() = delete; + + /** + * @param aWindow An window which is what this command manager lives on. + */ + explicit nsCommandManager(mozIDOMWindowProxy* aWindow); + + NS_DECL_CYCLE_COLLECTING_ISUPPORTS + NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsCommandManager, nsICommandManager) + + NS_DECL_NSICOMMANDMANAGER + + /** + * Notify the command manager that the status of a command changed. It may + * have changed from enabled to disabled, or vice versa, or become toggled + * etc. + */ + void CommandStatusChanged(const char* aCommandName); + + bool IsCommandEnabled(const nsCString& aCommandName, + mozIDOMWindowProxy* aTargetWindow); + + protected: + virtual ~nsCommandManager(); + + nsresult GetControllerForCommand(const char* aCommand, + mozIDOMWindowProxy* aDirectedToThisWindow, + nsIController** aResult); + + protected: + nsClassHashtable<nsCharPtrHashKey, ObserverList> mObserversTable; + + mozIDOMWindowProxy* mWindow; // weak ptr. The window should always outlive us +}; + +nsCommandManager* nsICommandManager::AsCommandManager() { + return static_cast<nsCommandManager*>(this); +} + +const nsCommandManager* nsICommandManager::AsCommandManager() const { + return static_cast<const nsCommandManager*>(this); +} + +#endif // nsCommandManager_h__ |