/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/* 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/. */

/*

   This is the focus manager for XUL documents.

*/

#ifndef nsXULCommandDispatcher_h__

#define nsXULCommandDispatcher_h__

#include "nsCOMPtr.h"

#include "nsIDOMXULCommandDispatcher.h"

#include "nsWeakReference.h"

#include "nsString.h"

#include "nsCycleCollectionParticipant.h"

#include "mozilla/RefPtr.h"

class nsPIWindowRoot;

namespace mozilla {

namespace dom {

class Element;

} // namespace dom

} // namespace mozilla

class nsXULCommandDispatcher : public nsIDOMXULCommandDispatcher,

                               public nsSupportsWeakReference

{

public:

    explicit nsXULCommandDispatcher(nsIDocument* aDocument);

    // nsISupports

    NS_DECL_CYCLE_COLLECTING_ISUPPORTS

    NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsXULCommandDispatcher,

                                             nsIDOMXULCommandDispatcher)

    // nsIDOMXULCommandDispatcher interface

    NS_DECL_NSIDOMXULCOMMANDDISPATCHER

    void Disconnect();

protected:

    virtual ~nsXULCommandDispatcher();

    already_AddRefed<nsPIWindowRoot> GetWindowRoot();

    mozilla::dom::Element*

      GetRootFocusedContentAndWindow(nsPIDOMWindowOuter** aWindow);

    nsCOMPtr<nsIDocument> mDocument;

    class Updater {

    public:

      Updater(mozilla::dom::Element* aElement,

              const nsAString& aEvents,

              const nsAString& aTargets)

          : mElement(aElement),

            mEvents(aEvents),

            mTargets(aTargets),

            mNext(nullptr)

      {}

      RefPtr<mozilla::dom::Element> mElement;

      nsString                mEvents;

      nsString                mTargets;

      Updater*                mNext;

    };

    Updater* mUpdaters;

    bool Matches(const nsString& aList,

                   const nsAString& aElement);

    bool mLocked;

    nsTArray<nsString> mPendingUpdates;

};

#endif // nsXULCommandDispatcher_h__