S60 3rd Edition SDK for Symbian OS Example Applications Guide

LandmarksCategoriesView.h

/*
* ==============================================================================
*  Name        : LandmarksCategoriesView.h
*  Part of     : Landmark Reference Application
*  Interface   : -
*  Description : See class description below
*  Version     : 1.0
*
*  Copyright (c) 2004-2006 Nokia Corporation.
*  This material, including documentation and any related 
*  computer programs, is protected by copyright controlled by 
*  Nokia Corporation.
* ==============================================================================
*/

#ifndef __LANDMARKS_CATEGORIES_VIEW_H__
#define __LANDMARKS_CATEGORIES_VIEW_H__

// INCLUDES
#include <aknview.h>

// FORWARD DECLARATIONS
class CLandmarksCategoriesContainer;
class CLandmarksApplicationEngine;
class CEikMenuPane;

// CLASS DECLARATION

/**
*  CLandmarksCategoriesView is the view displaying categories in the Landmarks 
*  Reference application.
*/
class CLandmarksCategoriesView: public CAknView
    {
    public: // Constructors and destructor

        /**
        * Two-phased constructor.
        *
        * @param aEngine the engine used for fetching category data. 
        * This object takes ownership of the engine.
        */
        static CLandmarksCategoriesView* NewLC(
            CLandmarksApplicationEngine* aEngine);

        /**
        * Destructor.
        */
        ~CLandmarksCategoriesView();

    public: // from CAknView

        /**
        * Id Identity of this view to the system
        *
        * @return the ID of this view
        */
        TUid Id() const;

        /** 
        * HandleCommandL handles user menu selections.
        *
        * @param aCommand the enumerated code for the option selected
        */
        void HandleCommandL(TInt aCommand);

        /**
        * DoActivateL Responsible for activating this view.
        *
        * @param aPrevViewId The id of the previous view
        * @param aCustomMessageId message identifier
        * @param aCustomMessage custom message provided when the view is changed
        */
        void DoActivateL(
            const TVwsViewId& aPrevViewId,
            TUid aCustomMessageId,
            const TDesC8& aCustomMessage);

        /**
        * DoDeactivate Responsible for deactivating this view.
        */
        void DoDeactivate();

        /** 
        * DynInitMenuPaneL initializes the menu pane before it is displayed.
        *
        * @param aResourceId a resource ID indetifying the menu bar containing 
        * the menu pane to be initialized.
        * @param aMenuPane the menu pane to initialize.
        */
        void DynInitMenuPaneL(
            TInt aResourceId,
            CEikMenuPane* aMenuPane);

    private:

        /**
        * C++ constructor.
        *        
        * @param aEngine the engine used for fetching categories data.
        */
        CLandmarksCategoriesView(
            CLandmarksApplicationEngine* aEngine);

        /**
        * By default Symbian 2nd phase constructor is private.
        */
        void ConstructL();

        /**
        * Launches a text query dialog and adds a category to the database.
        */
        void AddCategoryL();

        /**
        * Launches a text query dialog and renames a category in the database.
        */
        void RenameCategoryL();

    private: // Data

        //! The container containing the graphical components of the view
        CLandmarksCategoriesContainer* iContainer;

        //! The application engine used for modifying categories
        CLandmarksApplicationEngine* iEngine;

    };

#endif // __LANDMARKS_CATEGORIES_VIEW_H__

// End of File

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© Nokia 2006