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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description :
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*
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*/
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#ifndef TSWINDOWGROUPSOBSERVER_H
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#define TSWINDOWGROUPSOBSERVER_H
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#include "tsresourcemanager.h"
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/**
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* Interface declare mathods to notify about window server events
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*/
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class MTsWindowGroupsObserver
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{
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public:
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/**
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* Method notidy about window group changes.
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* @param rsc - resource manager
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* @param wgs - list of window groups associated with running applications
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*/
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virtual void HandleWindowGroupChanged(MTsResourceManager &rsc,
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const TArray<RWsSession::TWindowGroupChainInfo> & wgs) =0;
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};
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/**
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* Interface declare methods to subscribe windo server events
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*/
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class MTsWindowGroupsMonitor
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{
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public:
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/**
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* Method make subscription for window server events
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* @param observer - events observer
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*/
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virtual void SubscribeL(MTsWindowGroupsObserver & observer) =0;
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/**
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* Method cancel subscription for window server events
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* @param observer - events observer
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*/
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virtual void Cancel(MTsWindowGroupsObserver &) =0;
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};
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/**
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* Window server observer implementation. Class automaticly subscribe / cancel subscription
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* at construction / destruction level.
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*
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*/
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class CTsWindowGroupsObserver: public CBase,
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public MTsWindowGroupsObserver
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{
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public:
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/**
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* Destructor
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* Function automaticly cancel subscrption to window server events
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*/
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~CTsWindowGroupsObserver();
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protected:
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/**
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* First phase constructor
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*/
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CTsWindowGroupsObserver(MTsWindowGroupsMonitor &);
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/**
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* Second phase constructor.
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* Function automaticly subscribe window server events
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*/
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void BaseConstructL();
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private:
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MTsWindowGroupsMonitor & mMonitor;
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};
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/**
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* Window server monitor implementation.
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*/
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class CTsWindowGroupsMonitor: public CActive,
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public MTsWindowGroupsMonitor
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{
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public:
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/**
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* Two phase constructor
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*/
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static CTsWindowGroupsMonitor* NewL(MTsResourceManager &);
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/**
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* Destructor
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*/
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~CTsWindowGroupsMonitor();
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/**
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* @see MTsWindowGroupsMonitor::SubscribeL
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*/
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void SubscribeL(MTsWindowGroupsObserver &);
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/**
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* @see MTsWindowGroupsMonitor::Cancel
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*/
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void Cancel(MTsWindowGroupsObserver &);
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protected:
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/**
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* @see CActive::RunL
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*/
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void RunL();
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/**
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* @see CActive::DoCancel
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*/
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void DoCancel();
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/**
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* @see CActive::RunError
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*/
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TInt RunError(TInt error);
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private:
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/**
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* First phase constructor
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*/
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CTsWindowGroupsMonitor(MTsResourceManager &);
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/**
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* Second phase constructor
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*/
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void ConstructL();
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/**
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* Function subscribe for event to window server and activate object
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*/
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void Subscribe();
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/**
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* Function provide window server event to observers
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*/
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void ProvideEventL();
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/**
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* Function provide window server event to observer
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*/
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void ProvideEventL(TWsEvent, MTsWindowGroupsObserver &);
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private:
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/**
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* Registry of subscribed observers
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*/
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RPointerArray<MTsWindowGroupsObserver> mObservers;
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/**
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* Resources manager
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*/
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MTsResourceManager &mResources;
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/**
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* Monitor window group
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*/
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RWindowGroup mWg;
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};
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#endif //TSWINDOWGROUPSOBSERVER_H
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