/*

* Copyright (c) 2007-2008 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:  Base class for pre-capture views*

*/

#ifndef CAMPRECAPTUREVIEWBASE_H

#define CAMPRECAPTUREVIEWBASE_H

#include <akntoolbarobserver.h>

#include <akntouchgesturefw.h>

#include <akntouchgesturefwobserver.h>

#include <akntouchgesturefwevents.h>

#include "CamCaptureSetupViewBase.h"

#include "CamControllerObservers.h"

#include "CamAppController.h"

// FORWARD DECLARATION

class CCamCaptureSetupMenu;

class CCamStandbyContainer;

class MAknsSkinInstance; 

class TAknsItemID;

class CAknButton;

using namespace AknTouchGestureFw;

// CLASS DECLARATION

/**

* Base class for precapture views

*

*  @since 2.8

*/

class CCamPreCaptureViewBase : 	public CCamCaptureSetupViewBase,

								public MCamControllerObserver,

								public MAknToolbarObserver,

								public MAknTouchGestureFwObserver

    {

    public:  // Constructors and destructor

        /**

        * Destructor.

        * @since 2.8

        */

        virtual ~CCamPreCaptureViewBase();

    public: // Functions from base classes

        /**

        * From CAknView Handle commands

        * @since 2.8

        * @param aCommand command to be handled

        */

        void HandleCommandL( TInt aCommand );

        /**

        * From CAknView Handles the foreground/background event

        * @since 2.8

        * @param aForeground ETrue if this view is on foreground, else EFalse.

        */

        void HandleForegroundEventL( TBool aForeground );

        /**

        * From MCamControllerObserver

        * @since 2.8

        * @param aEvent The enumerated code for the event received

        * @param aError The error code associated with the event

        */

        void HandleControllerEventL( TCamControllerEvent aEvent,

                                            TInt aError );

        /**

        * From CAknView.

        * @since 2.8

        * @param aPreViewId the ID for previous view we are switching from

        * @param aCustomMessageId the Uid for message passed to this view

        * @param aCustomMessage descriptor containing data content for view specific message

        */

        void DoActivateL( const TVwsViewId& aPreViewId, TUid aCustomMessageId,

                                                    const TDesC8& aCustomMessage );

        /**

        * From CAknView.

        * @since 2.8

        */

        void DoDeactivate();

        /**

        * From CCamViewBase

        * Handle change of focus to another application

        * This only handles another application coming to the foreground when

        * the camera application is already in the background behind an eikon

        * server window

        * @since 2.8

        */

        void HandleFocusLossL();

        /**

        * From CCamCaptureSetupViewBase

        * Revert to normal mode

        * @since 2.8

        */

        virtual void ExitAllModesL();

        /**

         * Gesture events are subscribed once the containers are constructed by 

         * derived class. 

         */

        void CreateContainerL();

        /**

         * Gesture event notifications are received in this function. 

         */

        void HandleTouchGestureL( MAknTouchGestureFwEvent& aEvent );        

    public: // New functions

       /**

        * From CCamCaptureSetupViewBase

        * Return the active setting mode

        * @since 2.8

        * @return the active setting mode

        */

        TCamSettingMode ActiveSettingMode();

        /**

         * AppUi calls this to notify views of focusgained and focuslost

         * events.

         */

        void HandleAppEvent( const TCamAppEvent& aEvent );        

        /**

         * Sets a flag to true to indicate that access point dialog is shown and

         * viewfinder needs to be restarted.

         */        

        void SetLocationTrailConnecting();

        /**

         * AppUi calls this to indicate if postcapture view will be visible

         * in near future.

         */        

        void SetPostCaptureViewAsumption( TBool aAssumePostCaptureView );

        /**

        * Try to start the capture with MSK command. 

        * @since 9.1

        * @return ETrue if started.

        */

        virtual TBool StartMskCaptureL() = 0;

    protected:    // Functions from base classes

        /**

        * From CCamPreCaptureViewBase 

        * Set the menu bar resource.

        */

        virtual void SetMenuBar() = 0;

        /**

        * From CCamCaptureSetupViewBase

        * Switches the current mode to capture setup and activates a 

        * specific control.

        * @since 2.8

        * @param aSetupCommand that specifies which setup control type to activate.

        */

        void SwitchToCaptureSetupModeL( TInt aSetupCommand );

        /**

        * From CCamCaptureSetupViewBase

        * Switches the current mode to scene setting and activates a 

        * specific control.

        * @since 2.8

        */

        void SwitchToSceneSettingModeL();

        /**

        * From CCamCaptureSetupViewBase

        * Exits capture setup mode and activates the capture setup menu control.

        * @since 2.8

        */

        void ExitCaptureSetupModeL();

        /**

        * From CCamCaptureSetupViewBase

        * Exits scene setting mode and activates the capture setup menu control.

        * @since 2.8

        */

        void ExitSceneSettingModeL();

        /**

        * From CCamCaptureSetupViewBase

        * Exits scene setting mode and activates the capture setup menu control.

        * @since 2.8

        */

        void ExitInfoListBoxL();

        /**

        * Returns whether the view is a precapture view or not

        * @since 3.0

        * @returns ETrue

        */

        virtual TBool IsPreCapture();

        /**

        * Update fixed toolbar icons according to current settings

        * @since S60 5.0

        */

        virtual void UpdateToolbarIconsL() = 0;

		/**

        * Redraws the toolbar and toolbarextension if visible

        * @since S60 5.1

        */

		virtual void RedrawToolBar();

        /**

        * Returns the toolbar button by id from either the toolbar or toolbar extension

        * @param aCommandId CommandId correpsonding to the button 

        * @returns the button or NULL

        * @since S60 5.1

        */

        CAknButton* ToolbarButtonById(const TCamCmd aCommandId) const;

public:

        /**

        * Hides a toolbar/extension icon

        * @param aCommandId CommandId correpsonding to the button

        * @returns void

        * @since S60 5.1

        */

        virtual void HideButton(const TCamCmd aCommandId);

    protected:  // New functions

        /**

        * C++ default constructor.

        * @param aController Reference to either the application controller 

        * base class or test base class

        * @since 2.8

        */

        CCamPreCaptureViewBase( CCamAppController& aController );

        /**

        * Symbian 2nd phase constructor.

        * @since 2.8

        */

        void ConstructL();

        /**

        * Enter Viewfinder mode

        * @since 2.8

        */

        virtual void StartViewFinder() = 0;

        /**

        * Exit Viewfinder mode

        * @since 2.8

        */

        virtual void StopViewFinder() = 0;

        /**

        * Switch from current mode to standby mode

        * @since 2.8

        * @param aViewId the current view id

        * @param aError associated error code

        */

        void SwitchToStandbyModeL( TCamAppViewIds aViewId, TInt aError );

        /**

        * Exit standby mode and return to previous capture mode

        * @since 2.8

        */

        void ExitStandbyModeL();

#if 0

        /**

        * Check whether the ok options menu can be displayed

        * @since 2.8

        * @return ETrue if the menu can be displayed, else EFalse

        */

        TBool IsOkOptionsMenuAllowed();

#endif // 0

        /**

        * Stop the viewfinder and inform the controller that the engine is

        * no longer required by this view

        * @since 2.8

        */

        void ReleaseResources();

        /**

        * Switches the current mode to capture setup menu and activates 

        * the capture setup menu control.

        * @since 2.8

        */

        void SwitchToCaptureSetupMenuModeL();

        /**

        * Exits capture setup menu mode and activates the original precapture

        * view container that was active before entering this mode.

        * @since 2.8

        */

        void ExitCaptureSetupMenuModeL();

        /**

        * Creates a capture setup menu. Derived classes should create

        * either a video or photo menu, depending on the class type.

        * @since 2.8

        */

		virtual void CreateCaptureSetupMenuL() = 0;

        /**

        * Removes the capture setup menu and original container from

        * the container stack.

        * @since 2.8

        */

        void RemoveCaptureSetupMenuContainers();		

        /**

        * Set the icon of a toolbar button

        * @since S60 5.0

        * @param aButton       The button whose icon is to be changed.

        * @param aIconFilename Full path to the MBM/MIF file

        * @param aIconId       Icon ID in MBM/MIF file

        * @param aMaskId       Mask ID in MBM/MIF file

        * @param aSkinInstance Current skin instance

        * @param aSkinItemId   Skin ID for the button graphic

        * 

        */

        void SetIconL(

            CAknButton* aButton,

            const TDesC& aIconFilename,

            TInt aIconId,

            TInt aMaskId,

            MAknsSkinInstance* aSkinInstance, 

            const TAknsItemID& aSkinItemId );

        /**

        * Initialise the switch camera menu item, used from

        * DynInitMenuPaneL()

        * @since 3.0

        * @param aMenuPane The menu pane to initialise

        */

        void DynInitSwitchCameraMenuItemL( CEikMenuPane* aMenuPane );

// from base class MAknToolbarObserver

        void OfferToolbarEventL( TInt aCommand );

    private: // new functions

        /**

        * Cleans up the capture setup menu if a leave occurs

        * while switching to capture setup menu mode

        * @param aAny pointer to the object to cleanup

        * @since 2.8

        */

        static void CleanupCaptureSetupMenu( TAny* aAny );

        /**

        * Helper method to setup the Active Palette.

        * If needed, the AP is created.

        * For existing AP, the items are first cleared.

        * New items are set with resource from GetAPResourceId.

        */        

        void SetupActivePaletteL();

    protected: // data

        // An extra container that the view uses when in capture setup menu mode.

        CCamCaptureSetupMenu* iCaptureSetupMenuContainer;

        // Used to determine when the view is in capture setup mode       

        TBool iCaptureSetupMenuModeActive;

        // Used to determine which capture setup menu item to select

        // when a capture setup control is exited.

        TInt iCaptureSetupMenuLastItemIndex;

        // Indicates that the application has lost the foreground but has not

        // released the resources

        TBool iContinueInBackground;

        // Indicates if the view was told to initiate standby mode from

        // activation

        TBool iActivateToStandby;

        // Indicates if the view was told to exit to standby mode from

        // the current mode

        TBool iDeactivateToStandby;

        // Indicates if toolbar extension should be invisible when returning

        // precapture view

        TBool iToolbarExtensionInvisible;

        // Asumption that next view is postcaptureview. If true don't start

        // viewfinder if coming to foreground from background.

        TBool iAssumePostCaptureView;

        TBool iLocationTrailConnecting;

        //  Gesture related

        CAknTouchGestureFw *iGestureFw;

        TInt iLastMovement;

    };

#endif      // CAMPRECAPTUREVIEWBASE_H 

// End of File