mpx/tsrc/public/basic/common/testviewframework/inc/testmenuview.h
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     1 /*
       
     2 * Copyright (c) 2002 - 2007 Nokia Corporation and/or its subsidiary(-ies).
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description:  part of testviewframework.
       
    15 *
       
    16 */
       
    17 
       
    18 #ifndef TESTMENUVIEW_H
       
    19 #define TESTMENUVIEW_H
       
    20 
       
    21 //INCLUDES
       
    22 #include <badesca.h>
       
    23 #include "testbaseview.h"
       
    24 
       
    25 
       
    26 // FORWARD DECLARATION
       
    27 class CConsoleMain;
       
    28 
       
    29 // CLASS DECLARATION
       
    30 
       
    31 /**
       
    32 *  Abstract View class - contains functions which must be derived
       
    33 */
       
    34 class MTestMenuView
       
    35     {
       
    36     public:
       
    37     
       
    38         /**
       
    39         * Handle number key press
       
    40         * NOTE: Must be derived
       
    41         */
       
    42         virtual void HandleNumKeyL() = 0;
       
    43         
       
    44         /**
       
    45         * Handle left key press
       
    46         * NOTE: Must be derived
       
    47         */
       
    48         virtual void HandleLeftKeyL() = 0;
       
    49         
       
    50         /**
       
    51         * Handle right/enter key press
       
    52         * NOTE: Must be derived
       
    53         */
       
    54         virtual void HandleRightKeyL() = 0;
       
    55     };
       
    56 
       
    57 /**
       
    58 *  Menu View class - Console base
       
    59 */
       
    60 class CTestMenuView :public CTestBaseView, public MTestMenuView
       
    61     {
       
    62     public:
       
    63         /**
       
    64         * Destructor
       
    65         */
       
    66         IMPORT_C virtual ~CTestMenuView();
       
    67 
       
    68         
       
    69     public: //Implement abstract function from base classes
       
    70         /** 
       
    71         * From: CTestBaseView
       
    72         * Display view
       
    73         */
       
    74         IMPORT_C void DisplayViewL();
       
    75 
       
    76         /** 
       
    77         * From: CTestBaseView
       
    78         * Process keypresses on this menu - called by ConsoleMain
       
    79         * @param aSelection, key pressed
       
    80         * @param aContinue, whether to continue or stop scheduler
       
    81         */
       
    82         IMPORT_C void SelectL( TKeyCode aSelection, TBool& aContinue );
       
    83 
       
    84         /** 
       
    85         * From: CTestBaseView
       
    86         * Update display from timer - called by ConsoleMain
       
    87         */
       
    88         IMPORT_C void TimerUpdate();
       
    89     
       
    90 
       
    91     protected:
       
    92     
       
    93         /**
       
    94         * C++ default constructor
       
    95         */
       
    96         IMPORT_C CTestMenuView(CConsoleMain* aConsoleMain,
       
    97                          CTestBaseView* aParent,
       
    98                          const TDesC& aName);
       
    99 
       
   100         
       
   101         /**
       
   102         * NOTE: This function must be call within deriving class ConstructL
       
   103         * the second phase constructor ConstructL to safely construct things 
       
   104         * that can leave 
       
   105         * @param aConsole, console to display menu
       
   106         * @param aParent, parent menu
       
   107         * @param aName, name of current menu to be set
       
   108         * @param aLastMenu, whether the current has child menu
       
   109         */
       
   110         IMPORT_C void ConstructL();
       
   111                          
       
   112     protected:
       
   113         /** 
       
   114         * Print line
       
   115         * @param aPrint, descriptor of message to be printed
       
   116         */
       
   117         IMPORT_C void Print( const TDesC& aPrint);
       
   118 
       
   119         /** 
       
   120         * Multi line print if message exceeds one line
       
   121         * @param aPrint, descriptor of message to be printed
       
   122         */
       
   123         IMPORT_C void PrintMulti( const TDesC& aPrint );
       
   124 
       
   125         /** 
       
   126         * Add item to menu
       
   127         * @param aItem, item of current menu
       
   128         */
       
   129         IMPORT_C void AddItemL ( const TDesC& aItem );
       
   130         
       
   131         /** 
       
   132         * Delete an item from menu
       
   133         * @param aIndex, index of item to be deleted
       
   134         */
       
   135         IMPORT_C void DeleteItem ( TInt aIndex );
       
   136 
       
   137         /**
       
   138         * Get last key pressed
       
   139         * @return code of last key pressed
       
   140         */
       
   141         IMPORT_C TKeyCode LastKeyPressed();
       
   142 
       
   143         /**
       
   144         * Determine whether there are items added to iItems
       
   145         * @return whether item is empty
       
   146         */
       
   147         IMPORT_C TBool ItemsCreated();
       
   148 
       
   149         /**
       
   150         * Get the position that the cursor is point to in the items
       
   151         * @return index of current cursor pointing item in iItems
       
   152         */
       
   153         IMPORT_C TInt CurrentIndex();
       
   154 
       
   155         /**
       
   156         * Get the position that the cursor is point to on the screen
       
   157         * @return index of current cursor pointing item on screen
       
   158         */
       
   159         IMPORT_C TInt CurrentPosition();
       
   160 
       
   161         /**
       
   162         * Get the item
       
   163         * @return reference of item
       
   164         */
       
   165         IMPORT_C TPtrC ItemL(TInt aIndex);
       
   166 
       
   167         /**
       
   168         * Count the number of items in the current menu
       
   169         * @return number of items in the current menu
       
   170         */
       
   171         IMPORT_C TInt ItemCount() const;
       
   172         
       
   173         /**
       
   174         * Reads user input into the start of the descriptor aDes
       
   175         * @param aDes, descriptor to store input string
       
   176         */
       
   177         IMPORT_C void ReadString( TDes& aDes );
       
   178         
       
   179     protected:  // New functions
       
   180 
       
   181         /**
       
   182         * Append text before original text.
       
   183         */
       
   184         void AppendBefore(  TInt aLineNum, TDes& aLine );
       
   185 
       
   186     protected:  // Data
       
   187         CDesCArrayFlat*         iItems;         // View items
       
   188 
       
   189         TInt                    iPosOnScreen;  // Position on display
       
   190         TInt                    iFirst;        // First displayed item
       
   191         TInt                    iLast;         // Last displayed item
       
   192         TInt                    iItemCount;    // Last Item
       
   193         TSize                   iSize;         // Display size
       
   194         TInt                    iScreenSize;   // "Work area" size
       
   195         TInt                    iDirection;    // Scrolling direction
       
   196         TInt                    iStart;        // Scrolling position
       
   197         TInt                    iPrevPos;      // Previous position in scrolling
       
   198         TKeyCode                iKey;          // Last key pressed
       
   199 
       
   200     };
       
   201 
       
   202 
       
   203 #endif  //TESTMENUVIEW_H