emailuis/emailui/inc/FreestyleEmailUiShortcutBinding.h
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     1 /*
       
     2 * Copyright (c) 2008 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: This file defines class CFSEmailUiShortcutBinding.
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 #ifndef __FS_EMAIL_UI_SHORTCUT_BINDING_H
       
    20 #define __FS_EMAIL_UI_SHORTCUT_BINDING_H
       
    21 
       
    22 #include <PtiDefs.h>
       
    23 #include <e32property.h>
       
    24 #include "FreestyleEmailUi.hrh"
       
    25 
       
    26 
       
    27 // CONSTANTS
       
    28 
       
    29 // FORWARD DECLARATIONS
       
    30 class CEikMenuPane;
       
    31 class CPtiEngine;
       
    32 class CPtiKeyMappings;
       
    33 
       
    34 
       
    35 // CLASS DECLARATION
       
    36 class CFSEmailUiShortcutBinding : public CBase
       
    37     {
       
    38 public: // types
       
    39     
       
    40     //! Defines a view where the shortcut is used
       
    41     enum TShortcutContext
       
    42         {
       
    43         EContextMailList,
       
    44         EContextSearchResults,
       
    45         EContextMailViewer,
       
    46         EContextHtmlViewer,
       
    47         EContextMailDetails,
       
    48         EContextFolderList,
       
    49         EContextAttachmentList,
       
    50         EContextDownloadManager,
       
    51         EContextMainGrid,
       
    52         EContextSettings,
       
    53         EContextSendAttachmentList
       
    54         };
       
    55 
       
    56     //! @internal
       
    57     struct TShortcutBinding
       
    58         {
       
    59         TText iItutShortcut;        //!< Shortcut character on ITU-T. 0 if N/A.
       
    60         
       
    61         TText iQwertyShortcut;      //!< Shortcut character on QWERTY. 0 if N/A.
       
    62         TUint32 iQwertyModifiers;   //!< Modifiers of type TEventModifier required for the QWERTY shortcut. 0 if none.
       
    63         
       
    64         TInt iCommandId;            //!< The command for the shortcut.
       
    65         };
       
    66 
       
    67 public: // construction & destruction
       
    68 	
       
    69     static CFSEmailUiShortcutBinding* NewL();
       
    70     
       
    71     ~CFSEmailUiShortcutBinding();
       
    72         
       
    73 public: // methods
       
    74     
       
    75     /**
       
    76     * Gives a command ID for the given shortcut key. In the QWERTY mode, this 
       
    77     * depends on the English key mappings of the used device.
       
    78     * @param    aKey        Key event for which the command is fetched
       
    79     * @param    aContext    The view where the shortcut is used
       
    80     * @return   The command ID for the given key. 
       
    81     *           KErrNotFound if there is no command binded to the key in the given context.
       
    82     */
       
    83     TInt CommandForShortcutKey( const TKeyEvent& aKey, TShortcutContext aContext ) const;
       
    84     
       
    85     /**
       
    86     * Gives a command ID for the given shortcut. As opposed to the function 
       
    87     * CommandForShortcutKey(), this function does no mapping for the given
       
    88     * shortcut.
       
    89     * @param    aShortcut   The shortcut character for which the command is fetched.
       
    90     * @param    aContext    The view where the shortcut is used.
       
    91     * @param    aModifier   Modifiers (like ctrl) which are used when entering the shortcut.
       
    92     * @return   The command ID for the given shortcut. 
       
    93     *           KErrNotFound if there is no command binded to the shortcut in the given context.
       
    94     */
       
    95     static TInt CommandForShortcut( TText aShortcut, TShortcutContext aContext, TUint32 aModifiers=0 );
       
    96     
       
    97     /**
       
    98     * Gives a shortcut character for the given command. This function supports only
       
    99     * one key shortcuts: if the shortcut is made up of a modifer (like ctrl) and the
       
   100     * base key, this function does not find it.
       
   101     * @param    aCommandId  The command for which a shortcut is fetched.
       
   102     * @param    aContext    The view where the shortcut should be available.
       
   103     * @param    aQwertyMode Is the shortcut for QWERTY or ITU-T mode required.
       
   104     *                       ETrue means QWERTY mode.
       
   105     * @return   The shortcut character for the given command.
       
   106     *           0 if no such command was found.
       
   107     */
       
   108     static TText ShortcutForCommand( TInt aCommandId, TShortcutContext aContext, TBool aQwertyMode );
       
   109     
       
   110     /**
       
   111     * Adds the shortcut hints to the given menu. If the device is currently in the QWERTY
       
   112     * mode, the QWERTY shortcuts are used. Otherwise, the ITU-T shortcuts are used.
       
   113     * Only one key shortcuts are hinted: if a QWERTY shortcut needs a modifier key (like ctrl),
       
   114     * no hint is added to the menu.
       
   115     * @param    aMenuPane   The menu where the shortcuts should be added.
       
   116     * @param    aContext    The view in which the menu is shown.
       
   117     */
       
   118     void AppendShortcutHintsL( CEikMenuPane& aMenuPane, TShortcutContext aContext ) const;
       
   119 
       
   120     /**
       
   121     * Possible keyboard modes. Values match values stored to property key KAknKeyBoardLayout.  
       
   122     */
       
   123     enum TKeyBoardType
       
   124         {
       
   125         ENoKeyboard = 0,
       
   126         EItutKeyPad = 1,
       
   127         EQwerty4x12 = 2,
       
   128         EQwerty4x10 = 3,
       
   129         EQwerty3x11 = 4,
       
   130         EHalfQwerty = 5,
       
   131         ECustomQwerty = 6
       
   132         };
       
   133      
       
   134     /**
       
   135     * For checking current keyboard mode
       
   136     * @return   Type of the currently active keyboard
       
   137     */
       
   138     TKeyBoardType KeyBoardType() const;
       
   139 
       
   140 
       
   141 private: // construction
       
   142 
       
   143 	CFSEmailUiShortcutBinding();
       
   144 	
       
   145 	void ConstructL();
       
   146 	
       
   147 private: // methods
       
   148 		
       
   149 	//! Utility function for selecting the correct binding table for the given view.
       
   150 	static void GetBindingsForContext( const TShortcutBinding*& aBindingArray, 
       
   151 	                                   TInt& aBindingCount, 
       
   152 	                                   TShortcutContext aContext );
       
   153 	
       
   154 	//! Appends the given shortcut hint with decorations to the given descriptor.
       
   155 	static void AppendHintToCaption( TDes& aCaption, TText aHint );
       
   156 	
       
   157 private: // data
       
   158 	
       
   159 	CPtiEngine* iPtiEngine;
       
   160 	
       
   161     RProperty iKbLayoutProperty;
       
   162 
       
   163     CPtiKeyMappings* iQwertyMappings; // owned by iPtiEngine
       
   164     CPtiKeyMappings* iHalfQwertyMappings; // owned by iPtiEngine
       
   165     };
       
   166     
       
   167 #endif // __FS_EMAIL_UI_SHORTCUT_BINDING_H