/*

* Copyright (c) 2005-2009 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:  Declares container control for application.

*

*/

#ifndef USBCLASSCHANGEUIPLUGINVIEW_H

#define USBCLASSCHANGEUIPLUGINVIEW_H

// INCLUDES

#include <aknview.h>            // AVKON components

#include <AknQueryDialog.h>     // AVKON component

#include <eikmenup.h>           // Menu pane definitions

#include <gsplugininterface.h>  // General Settings plugin

#include <ConeResLoader.h>

#include <data_caging_path_literals.hrh> 

#include "USBClassChangeUIPluginModel.h"   

#include "USBClassChangeUIPluginInterface.h"

// CONSTANTS

/** implementation uid */

const TUid KGsUSBUIPluginUid = { 0x1020E472 };

_LIT(KFileDrive,"z:");

_LIT(KResourceFileName, "USBClassChangeUIPlugin.rsc");

_LIT(KUSBUIconFileName, "usbui.mif");

/** USB modes are listed in the setting page */

const TInt KSettingPageItemsGranularity = 3;

// FORWARD DECLARATIONS

class CUSBClassChangeUIPluginContainer;

// CLASS DECLARATION

/**

* Main view of the application. Handles view activation, 

* deactivation, commands and dynamic options menus.

*/

class CUSBClassChangeUIPluginView :

    public CUSBClassChangeUIPluginInterface,

    public MUSBUIObserver

    {

    public: // Constructors and destructor

        /**

        * Entry point for General Settings

        */	

        static CUSBClassChangeUIPluginView* NewPluginL();

        /**

        * Entry point for USBClassChangeUIAppUi

        */	

        static CUSBClassChangeUIPluginView* NewL();

    	/**

        * Symbian 2nd phase constructor.

        */

        void ConstructL();

		/**

        * Destructor.

        */

        virtual ~CUSBClassChangeUIPluginView();

    public: // Functions from base classes

        /**

        * From CAknView Returns view id.

        * @param None.

        * @return View id.

        */

        TUid Id() const;

		/**

        * From CAknView Handles user commands.

        * @param aCommand A command id.        

        * @return None.

        */

        void HandleCommandL( TInt aCommand );

        /**

        * From CGSPluginInterface

        * Method for getting caption of this plugin. This should be the 

        * localized name of the settings view to be shown in parent view.

        *

        * @param aCaption pointer to Caption variable

        */

        void GetCaptionL( TDes& aCaption ) const;

        /**

        * From CGSPluginInterface.

        * Function for getting plugin's value for a certain key.

        *

        * @param aKey Key for the value to be retrieved.

        * @parem aValue Value for the given gey in TDes format.

        */

        void GetValue(const TGSPluginValueKeys aKey, TDes& aValue );

        /**

        * From CGSPluginInterface

        * Creates a new icon of desired type.

        *

        * @param  aIconType UID Icon type UID of the icon to be created.

        * @return Pointer of the icon. NOTE: Ownership of this icon is

        *         transferred to the caller.

        */

        CGulIcon* CreateIconL( const TUid aIconType );

        /**

        * Initialize options menu.

        * Remove help option, if the feature is not supported.

        * @param aResId Resource Id

        * @param aMenu The menu pane.

        */

        void DynInitMenuPaneL( TInt aResId, CEikMenuPane* aMenu );

        /**

        * From MUSBUIObserver.

        * Informs the observer that a setting has been changed. 

        */

        void SettingChanged();

        /**

         * From MUSBUIObserver/MUSBDeviceStateObserver.

         * Informs the observer that USB device state has changed.

         * @param aState current device state.

         */

        void DeviceStateChanged(TUsbDeviceState aPrevState,

                                TUsbDeviceState aState);

        /**

         * From MUSBUIObserver/MUSBOtgHostStateObserver.

         * @see MUSBOtgHostStateObserver::OtgHostIdPinStateChanged

         */

        void OtgHostIdPinStateChanged(TBool aIsIdPinOn);

        /**

         * From MUSBOtgHostStateObserver

         * @see MUSBOtgHostStateObserver::OtgHostIdPinStateChanged

         */

        void HostEventNotify(TDeviceEventInformation aEventInfo);

        // New functions

        /**

        * Gets the USB mode (from model)

        * @param None.

        * @return the value of the personality ID

        */

        TInt USBMode() const;

        /**

        * Sets the USB mode (through model)

        * @param The value of the personality ID.

        * @return None.

        */

        void SetUSBModeL( TInt );

        /**

         * Checks whether USB device is connected.

         */

        TBool IsUSBDeviceConnected();

     private: 

         /**

         * Updates parent view if we are loaded by GS plugin.

         */

        void UpdateParentView();

        /**

        * Handle change command for USB mode

        * @param aMode usb mode id

        */

        void HandleCmdChangeUSBModeL(TInt aMode);

     private: // Functions from base classes

        /**

        * From CAknView Activates view.

        * @param aPrevViewId Id of previous view.

        * @param aCustomMessageId Custom message id.

        * @param aCustomMessage Custom message.

        * @return None.

        */

        void DoActivateL( const TVwsViewId& aPrevViewId,

                                TUid aCustomMessageId,

                          const TDesC8& aCustomMessage );		

        /**

        * From CAknView Deactivates view.        

        * @param None.

        * @return None.

        */

        void DoDeactivate();

    private: // Data

        //Reference to the UI container

        //owned by this class

        CUSBClassChangeUIPluginContainer*   iContainer;

        //reference to the AppUI

        //not owned

        CAknViewAppUi*              		iAppUIRef;

        //Reference to the Model

        //owned by this class

        CUSBClassChangeUIPluginModel*	    iModelRef;	

        // Flag used if it is needed to load 

        // the UI plugin 

        TBool                       		iLoadAsGSPlugin;

        CEikonEnv*                          iEikEnv;

        // Flag for eikon env.

        TInt                                iResourceFileFlag; 

        // Previous view of GS ap

        TVwsViewId 				    		iPrevViewId; 	   

        TBool                               iHelpSupported;

    };

#endif  // USBCLASSCHANGEUIPLUGINVIEW_H

// End of File