/*

* Copyright (c) 2002-2007 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Personalisation application UI class.

*

*/

#ifndef C_PSLNUI_H

#define C_PSLNUI_H

#include <aknViewAppUi.h>

#ifndef RD_CONTROL_PANEL

#include <akntabgrp.h>

#include <akntabobserver.h>

#endif //RD_CONTROL_PANEL

#include <AknsSrvClient.h>

#include <e32property.h>

class CAknNavigationControlContainer;

class CAknNavigationDecorator;

class MAknBackgroundProcess;

#ifndef RD_CONTROL_PANEL

class CAknTabGroup;

#endif //RD_CONTROL_PANEL

class CPslnMainView;

class CPslnPluginHandler;

class CPslnFWPluginInterface;

class CPslnIdleTaskCreateViews;

class CPslnModel;

class CPslnPropertySubscriber;

class CPslnGeneralThemeView;

/**

 *  'AppUi' class.

 *

 *  @since S60 v2.0

 */

class CPslnUi : public CAknViewAppUi,

                public MAknsSkinChangeObserver

#ifndef RD_CONTROL_PANEL

                ,public MAknTabObserver

#endif //RD_CONTROL_PANEL

    {

public:

    /**

    * C++ default constructor

    */

    CPslnUi();

    /**

    * Symbian default constructor.

    */

    void ConstructL();

    /**

    * Destructor.

    */

    ~CPslnUi();

    /**

    * From CEikAppUi.

    * Takes care of command handling.

    * @param aCommand command to be handled

    */

    void HandleCommandL( TInt aCommand );

    /**

    * From CEikAppUi.

    * Handles a change to the application's resources

    * which are shared across the environment.

    * @param aType type of resources that have changed. 

    */

    void HandleResourceChangeL( TInt aType );

    /**

    * From CAknViewAppUi.

    * Activates a specified application view, without passing any message.

    * The function leaves if activation of the view fails.

    * @param aViewId Identifier of the view to activate.

    */

    void ActivateLocalViewL( TUid aViewId );

    /**

    * From MAknsSkinChangeObserver.

    * Called by the skin server when skin content is changed and the

    * connected client wants to be informed.

    *

    * @since 2.0

    */

    void SkinContentChanged();

    /**

    * From MAknsSkinChangeObserver.

    * Called by the skin server to indicate that the current skin

    * configuration has changed.

    *

    * @param aReason Reason code.

    *

    * @since 2.5

    */

    void SkinConfigurationChanged(

        const TAknsSkinStatusConfigurationChangeReason aReason );

    /**

    * From MAknsSkinChangeObserver.

    * Called by the skin server to indicate that the available

    * skin packages have changed.

    *

    * @param aReason Reason code.

    *

    * @since 2.5

    */

    void SkinPackageChanged(

        const TAknsSkinStatusPackageChangeReason aReason );

    /**

    * Returns pointer to Psln model which is owned by the AppUi.

    *

    * @return Psln model.

    */

    CPslnModel* Model() const;

    /**

    * Updates Tab index. If the parameters are not given, tab is set 

    * according to active selection in Main View.

    *

    * @param aMyId Uid of the active view.

    * @param aMyTabIndex Index of the active tab.

    * @since 3.1

    */

    void UpdateTabIndex( const TInt aMyId = KErrNotFound,

        const TInt aMyTabIndex = KErrNotFound );

    /**

    * Creates the given view.

    * @since 3.1

    * @param aViewUid Uid of view to be created.

    */

    void CreateViewL( TUid aViewUid );

    /**

    * Returns application's CAknNavigationControlContainer.

    * @since 3.1

    * @return CAknNavigationControlContainer.

    */

    CAknNavigationControlContainer* NaviContainer() const;

    /**

    * Returns tab group.

    * @since 3.1

    * @return CAknNavigationDecorator.

    */

    CAknNavigationDecorator* PslnTabGroup();

    /**

    * Returns pointer to ECOM plugin handler which is owned by the AppUi.

    * @since 3.1

    * @return ECOM plugin handler.

    */

    CPslnPluginHandler* PluginHandler() const;

    /**

    * Add new view to Ui Class.

    * @since 3.1

    * @param aNewView new view to add to Ui class.

    */

    void AddNewViewL( CAknView* aNewView );

    /**

    * Indicate from caller class that Ui-class has now all the applicable views.

    * @since 3.1

    */

    void AllViewsDone();

    /**

    * Handles errors when settings wallpapers.

    * @param aError error code received from WallpaperUtils API.

    */

    void HandleImageErrorsL( TInt aError );

#ifndef RD_CONTROL_PANEL

    /**

    * From MAknTabObserver.

    * Takes care of tab handling.

    * @since 3.1

    * @param aIndex tab to be handled

    */

    void TabChangedL( TInt aIndex );

#endif //RD_CONTROL_PANEL

    /**

    * Create views when application is idle. 

    * @since 3.1

    */

    void LoadViewsWhenIdleL();

    /**

    * Constructs tab group, containing all static views and 

    * ECOM plugin views.

    * @since 3.1

    */

    void ConstructTabGroupL();

    /**

    * Indicates if the UI class has deployed the skin already and is ready to 

    * receive further skin activation related commands.

    * @return ETrue when UI class can handle a new skin activation related 

    *         command, otherwise EFalse,

    */

    TBool IsReadyToHandleCommands();

    /**

    * Handles exit command correctly when leave occurs in application exit.

    */

    void HandleCmdExitLeave();

    /**

    * Sets title back to default (application name).

    */

    void SetTitleToDefaultL();

    /**

    * Binary flags to indicate if view is going to be created.

    * Statuses are valid irregardless if view has, or has not 

    * been already created. These values cannot change dynamically.

    * 

    */

    enum TPslnViewSupport

        {

        EPslnScreensaverView = 0x00000001,

        EPslnWallpaperView   = 0x00000002

        };

    /**

    * Gets view creation statuses as a bitmask.

    * See TPslnViewSupport for optional views whose statuses

    * can be inquiried.

    * To check if a view is supported, check flag value.

    * E.g. TBitflags views = ViewSupport();

    *      if ( views.IsSet( EPslnScreensaverView ) )

    *          {

    *          // Screensaver view is supported

    *          ...

    * 

    * @return bitmask containing view support status.

    */

    TBitFlags ViewSupport();

    void SetDRMProtectedSkinInSkinList( 

        const TBool& aProtectedSkinInList );

    /**

    * USB Callback.

    */

    static TInt USBCallBackL(TAny* aPtr);

    /**

    * USB Attach State.

    * @return ETrue when USB already attached, otherwise EFalse,

    */

    TBool USBAttachState();

private:

    /**

    * From CCoeAppUi.

    * Handles events sent to the application by the window server.

    * @param The event that occurred.

    * @param The control that the event occurred in. 

    *        (For key events this is the applications window group.)

    */

    void HandleWsEventL(

        const TWsEvent& aEvent,

        CCoeControl* aDestination );

    /**

    * From CEikAppUi.

    * Key event handler.

    */

    virtual TKeyResponse HandleKeyEventL(

        const TKeyEvent& aKeyEvent,

        TEventCode aType );

    /**

    * @see SkinConfigurationChanged, same functionality, but 

    * leaving internal method.

    */

    void SkinConfigurationChangedL(

        const TAknsSkinStatusConfigurationChangeReason aReason );

    /* Activates skin. */

    void ActivateSkinL();

    /* Activates sounds in skin. */

    void ActivateSoundsL();

    /* Downloads skin. */

    void DownloadSkinL();

    /* Creates wait dialog and shows it */

    void CreateAndShowWaitWrapperL(

        MAknBackgroundProcess& aTask,

        const TInt aResourceID, const TDesC& aString,

        const TBool aShowImmediately = ETrue );

#ifndef RD_CONTROL_PANEL

    /* Adds given view plugin to TabGrp */

    void AddPluginToTabL( CPslnFWPluginInterface& aPlugin );

#endif //!RD_CONTROL_PANEL

    /* Handles exit command. */

    void HandleCmdExitL();

    /* Shows error note. */

    void ShowErrorNoteL( HBufC& aErrorBuf ) const;

    /**

    * Callback when idle time occurs.

    */

    static TInt DoCreateWaitNoteL( TAny* aAny );

    /* Creates and shows wait note. */

    void DoCreateWaitNoteL();

    /* Activates skin, cannot leave. */

    TInt ActivateSkin( const TInt aPslnStatus );

#ifndef RD_CONTROL_PANEL

    /* Non-leaving version of AddPluginToTabL. */

    TInt AddPluginToTab( CPslnFWPluginInterface& aPlugin );

#endif //!RD_CONTROL_PANEL

    /* Set internal state to post-skin-deployment.*/

    void SkinDeployedL();

    /** 

    * Creates model instance.

    * @since 3.1

    */

    void CreateModelL();

    /**

    * Callback when idle time occurs for skin activation.

    */

    static TInt DoActivateSkinL( TAny* aAny );

    /**

    * Activates skin

    */

    void DoActivateSkinL();

// INLINE METHODS

    /* Checks if internal state is on or off. */

    inline TBool GetStatus( TInt aInternalState ) const;

    /* Sets internal state on. Includes check that state is now off. */

    inline void SetStateOn( TInt aInternalState );

    /* Sets internal state off. Includes check that state is now on. */

    inline void SetStateOff( TInt aInternalState );

    /**

    * Handle USB Callback.

    */

    void HandleUSBCallBackL();

private: // data

    /**

    * Psln Model.

    * Own.

    */

    CPslnModel* iModel;

    /**

    * Navigation Pane.

    * Not own.

    */

    CAknNavigationControlContainer* iNaviPane;

    /**

    * Frame for tabgroup.

    * Own.

    */

    CAknNavigationDecorator* iDecoratedTabGroup;

    /**

    * Main view.

    * Not own (application framework 'owns' this).

    */

    CPslnMainView* iMainView;

    /**

    * ECOM view plugin handler.

    * Own.

    */

    CPslnPluginHandler* iPluginHandler;

    /**

    * Internal status of Psln. The specific states are:

    * 

    * EPslnCreated 

    *     Psln has this status when default constructor 

    *     has been called. It's set off, once all views 

    *     have been added.

    * EPslnSoundActivationPending

    *     Psln has this status when skin server about to activate

    *     sounds included in skin package. It is set off when 

    *     activation is finished.

    * EPslnListUpdateNeeded

    *     Psln has this status when skin list needs updating.

    * EPslnWallpaperViewCreated

    *     This state is active when wallpaper view has been created.

    *     It is initially off and set on when either view is loaded

    *     due to idle activity, or when needed.

    * EPslnScreenSaverViewCreated

    *     This state is active when screensaver view has been created.

    *     It is initially off and set on when either view is loaded

    *     due to idle activity, or when needed.

    * EPslnGeneralViewCreated

    *     This state is active when general theme view has been created.

    *     It is initially off and set on when either view is loaded

    *     due to idle activity, or when needed.    

    * EPslnSkinActivated

    *     User has opted to activate a skin. This state prevails until

    *     skin server indicates that skin changes has been deployed.

    * EPslnTabGroupCreated

    *     This state is active when tab group has been created.

    *     It is initially off and set on when either any other view is

    *     activated (other than main) or with time due to idle activity.

    * EPslnModelCreated

    *     This state is active when model has been created.

    *     It is initially off and set on when either any other view is

    *     activated (other than main) or with time due to idle activity.    

    * EPslnSkinChangeRequested

    *     This state is active when user has indicated that he/she would

    *     would like to change the active skin (i.e. preview or actual

    *     activation). It is initially off and is set on when user selects

    *     Apply for the skin from General Theme view.

    *     It is again set off when skin server indicates that skin was 

    *     either activated, or there was an error. 

    *     This differs from EPslnSkinActivated in that this is purely tied

    *     to user activity.

    * EPslnViewSupportChecked

    *     This state indicates that the view support has been checked.

    *     It is set active once, the view support status has been checked

    *     for the first time.

    * EPslnNoScreenSaverView

    *     This state indicates that there is no Screensaver view in the

    *     application. View statuses are set when ViewSupport is called.

    * EPslnNoWallpaperView

    *     This state indicates that there is no Wallpaper view in the

    *     application. View statuses are set when ViewSupport is called.

    */

    enum TPslnStatus {

        EPslnCreated                = 0x00000001,

        EPslnProtectedSkinInList    = 0x00000002,

        //Not used    = 0x00000004,

        EPslnSoundActivationPending = 0x00000008,

        EPslnListUpdateNeeded       = 0x00000010,

        EPslnWallpaperViewCreated   = 0x00000020,

        EPslnScreenSaverViewCreated = 0x00000040,

        EPslnGeneralViewCreated     = 0x00000080,

        EPslnSkinActivated          = 0x00000200,

        EPslnTabGroupCreated        = 0x00000400,

        EPslnModelCreated           = 0x00000800,

        EPslnSkinChangeRequested    = 0x00001000,

        EPslnViewSupportChecked     = 0x00002000,

        EPslnNoScreenSaverView      = 0x00004000,

        EPslnNoWallpaperView        = 0x00008000

        };

    TInt iPslnUiStatus;

#ifndef RD_CONTROL_PANEL

    /**

    * Tab group.

    * Not own - owned by iDecoratedTabGroup.

    */

    CAknTabGroup* iTabGroup;

#endif //RD_CONTROL_PANEL

    /**

    * Creates views when application is idle.

    * Own.

    */

    CPslnIdleTaskCreateViews* iIdleTask;   

    /**    

    * 

    */

    CIdle* iIdleActivateSkin;

    /**    

    * 

    */

    CIdle* iIdleUpdateSkin;

    /**