/*

* Copyright (c) 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: This file implements class CFSEmailUiShortcutBinding.

 *

 */

#include "emailtrace.h"

#include <PtiEngine.h>

#include <PtiKeyMappings.h>

#include <centralrepository.h>

#include <AvkonInternalCRKeys.h>

#include <eikmenup.h>

#include "FreestyleEmailUiShortcutBinding.h"

#include "FSEmail.pan"

//////////////////////////////

// The shortcut binding tables

// ---------------------------

// In case the same shortcut is assigned for multiple commands, the shortcut to 

// command conversion will always return the first mapping.

//

// Shortcuts with modifiers must be listed before unmodifed shortcuts, at least when

// the same key has different meaning as plain key and with modifier. Otherwise,

// the unmodified mapping will be used also for the modified key.

// Shortcuts for the mail list view

const CFSEmailUiShortcutBinding::TShortcutBinding KMailListShortcuts[] = 

    {

        { 0,  'A', 0,     EFsEmailUiCmdActionsReplyAll },

        { 0,  'R', 0,     EFsEmailUiCmdActionsReply },

        { 0,  'F', 0,     EFsEmailUiCmdActionsForward }, 

        { 0,  'M', 0,     EFsEmailUiCmdActionsMove },

        { 0,    'Y', 0,     EFsEmailUiCmdActionsCopyMessage },

        { 0,    'D', 0,     EFsEmailUiCmdActionsDelete },

        { 0, EStdKeyBackspace, 0, EFsEmailUiCmdActionsDelete },

        { 0,  'T', 0,     EFsEmailUiCmdGoToTop },

        { 0,  'B', 0,     EFsEmailUiCmdGoToBottom },

        { 0,    'J', 0,     EFsEmailUiCmdPageUp },

        { 0,    'K', 0,     EFsEmailUiCmdPageDown },

        { 0,    'L', 0,     EFsEmailUiCmdActionsFlag },

        { 0,  'C', 0,     EFsEmailUiCmdCompose },

        { 0,    'E', 0,     EFsEmailUiCmdCalActionsAccept }, 

        { 0,    'G', 0,     EFsEmailUiCmdCalActionsTentative },

        { 0,    'V', 0,     EFsEmailUiCmdCalActionsDecline },

        { 0,    'O', 0,     EFsEmailUiCmdActionsOpen },

        { 0,  'Z', 0,     EFsEmailUiCmdSync },

        { 0,    'S', 0,     EFsEmailUiCmdSearch },

        { 0,    'Q', 0,     EFsEmailUiCmdGoToSwitchFolder },

        { 0,    'W', 0,     EFsEmailUiCmdGoToSwitchSorting },

        { 0,    'H', 0,     EFsEmailUiCmdHelp },

        { 0,  'U', 0,     EFsEmailUiCmdMarkAsReadUnreadToggle },

        { 0,  'U', 0,     EFsEmailUiCmdMarkAsRead },   

        { 0,  'U', 0,     EFsEmailUiCmdMarkAsUnread },

        { 0,    'I', 0,     EFsEmailUiCmdActionsCollapseExpandAllToggle },

        { 0,    'I', 0,     EFsEmailUiCmdActionsCollapseAll },

        { 0,    'I', 0,     EFsEmailUiCmdActionsExpandAll },

        { 0,  0, 0,       EFsEmailUiCmdMarkingModeFromPopUp },

        { 0,  0, 0,       EFsEmailUiCmdMarkingMode },

        { 0,  0, 0,       EFsEmailUiCmdMarkingModeDelete },

        { 0,  0, 0,       EFsEmailUiCmdMarkingModeUnread },

        { 0,  0, 0,       EFsEmailUiCmdMarkingModeRead },

        { 0,  0, 0,       EFsEmailUiCmdMarkingModeMove },

        { 0,  0, 0,       EFsEmailUiCmdMarkingModeFollowUp },

        { 0,  0, 0,       EFsEmailUiCmdMarkingModeMarkAll },

        { 0,  0, 0,       EFsEmailUiCmdMarkMark }, 

        { 0,  0, 0,       EFsEmailUiCmdMarkUnmark }

    };

// Shortcuts for the mail viewer

const CFSEmailUiShortcutBinding::TShortcutBinding KMailViewerShortcuts[] = 

    {

        { 0,    'C', EModifierCtrl, EFsEmailUiCmdActionsCopyToClipboard },

        { 0,  'A', 0,     EFsEmailUiCmdActionsReplyAll },

        { 0,  'R', 0,     EFsEmailUiCmdActionsReply },

        { 0,  'F', 0,     EFsEmailUiCmdActionsForward }, 

        { 0,  'F', 0,     EFsEmailUiCmdActionsForward2 }, 

        { 0,  'M', 0,     EFsEmailUiCmdActionsMoveMessage },

        { 0,    'Y', 0,     EFsEmailUiCmdActionsCopyMessage },

        { 0,    'D', 0,     EFsEmailUiCmdActionsDelete },

        { 0, EStdKeyBackspace, 0, EFsEmailUiCmdActionsDelete },

        { 0,  'T', 0,     EFsEmailUiCmdGoToTop },

        { 0,  'B', 0,     EFsEmailUiCmdGoToBottom },

        { 0,    'J', 0,     EFsEmailUiCmdPageUp },

        { 0,    'K', 0,     EFsEmailUiCmdPageDown },

        { 0,  'N', 0,     EFsEmailUiCmdNextMessage },

        { 0,  'P', 0,     EFsEmailUiCmdPreviousMessage },

        { 0,    'L', 0,     EFsEmailUiCmdActionsFlag },

        { 0,  'C', 0,     EFsEmailUiCmdCompose },

        { 0,    'H', 0,     EFsEmailUiCmdHelp },

        { 0,  'U', 0,     EFsEmailUiCmdMarkAsReadUnreadToggle },

        { 0,  'U', 0,     EFsEmailUiCmdMarkAsRead },   

        { 0,  'U', 0,     EFsEmailUiCmdMarkAsUnread }

    };

// Shortcuts for the HTML viewer

const CFSEmailUiShortcutBinding::TShortcutBinding KHtmlViewerShortcuts[] = 

    {

        { 0,  'A', 0,     EFsEmailUiCmdActionsReplyAll },

        { 0,  'R', 0,     EFsEmailUiCmdActionsReply },

        { 0,  'F', 0,     EFsEmailUiCmdActionsForward }, 

        { 0,    'D', 0,     EFsEmailUiCmdActionsDelete },

        { 0, EStdKeyBackspace, 0, EFsEmailUiCmdActionsDelete },

        { 0,    'H', 0,     EFsEmailUiCmdHelp },

        { 0,  '+', 0,     EFsEmailUiCmdZoomIn },

        { 0,  '-', 0,     EFsEmailUiCmdZoomOut },

        { 0,  'N', 0,     EFsEmailUiCmdNextMessage },

        { 0,  'P', 0,     EFsEmailUiCmdPreviousMessage },

        { 0,  EStdKeyLeftArrow, EModifierShift,     EFsEmailUiCmdPreviousMessage },

        { 0,  EStdKeyRightArrow, EModifierShift,     EFsEmailUiCmdNextMessage }

    };

// Shortcuts for the search results view    

const CFSEmailUiShortcutBinding::TShortcutBinding KSearchResultsShortcuts[] = 

    {

        { 0,    'O', 0,     EFsEmailUiCmdOpen },

        { 0,    'S', 0,     EFsEmailUiCmdSearch },

        { 0,    'S', 0,     EFsEmailUiCmdNewSearch },

        { 0,    'H', 0,     EFsEmailUiCmdHelp },

        { 0,  'T', 0,     EFsEmailUiCmdGoToTop },

        { 0,  'B', 0,     EFsEmailUiCmdGoToBottom },

        { 0,    'J', 0,     EFsEmailUiCmdPageUp },

        { 0,    'K', 0,     EFsEmailUiCmdPageDown },

        { 0,  'A', 0,     EFsEmailUiCmdActionsReplyAll },

        { 0,  'R', 0,     EFsEmailUiCmdActionsReply },

        { 0,  'F', 0,     EFsEmailUiCmdActionsForward }, 

        { 0,    'D', 0,     EFsEmailUiCmdActionsDelete },

        { 0, EStdKeyBackspace, 0, EFsEmailUiCmdActionsDelete },

        { 0,    'E', 0,     EFsEmailUiCmdCalActionsAccept }, 

        { 0,    'G', 0,     EFsEmailUiCmdCalActionsTentative },

        { 0,    'V', 0,     EFsEmailUiCmdCalActionsDecline },        

        { 0,  'U', 0,     EFsEmailUiCmdMarkAsReadUnreadToggle },

        { 0,  'U', 0,     EFsEmailUiCmdMarkAsRead },   

        { 0,  'U', 0,     EFsEmailUiCmdMarkAsUnread }

    };

// Shortcuts for generic list views. These are used with Mail details, attachment list, etc.    

const CFSEmailUiShortcutBinding::TShortcutBinding KGenericListShortcuts[] = 

    {

        { 0,    'C', EModifierCtrl, EFsEmailUiCmdActionsCopyToClipboard },

        { 0,    'O', 0,     EFsEmailUiCmdOpen },

        { 0,    'D', 0,     EFsEmailUiCmdActionsDelete },

        { 0, EStdKeyBackspace, 0, EFsEmailUiCmdActionsDelete },

        { 0,  'T', 0,     EFsEmailUiCmdGoToTop },

        { 0,  'B', 0,     EFsEmailUiCmdGoToBottom },

        { 0,    'J', 0,     EFsEmailUiCmdPageUp },

        { 0,    'K', 0,     EFsEmailUiCmdPageDown },

        { 0,    'H', 0,     EFsEmailUiCmdHelp },

        { 0,    'I', 0,     EFsEmailUiCmdActionsCollapseExpandAllToggle },

        { 0,    'I', 0,     EFsEmailUiCmdActionsCollapseAll },

        { 0,    'I', 0,     EFsEmailUiCmdActionsExpandAll }

    };

// Shortcuts for the main grid

const CFSEmailUiShortcutBinding::TShortcutBinding KMainGridShortcuts[] = 

    {

        { 0,    'O', 0,     EFsEmailUiCmdOpen },

        { 0,  'Z', 0,     EFsEmailUiCmdSync },

        { 0,  'Z', 0,     EFsEmailUiCmdSyncAll },

        { 0,    'H', 0,     EFsEmailUiCmdHelp },

    };

// Shortcuts for send attachments list view

const CFSEmailUiShortcutBinding::TShortcutBinding KSendAttachmentListShortcuts[] =

    {

        { 0,    'O', 0,     ESendAttachmentMenuOpen },

        { 0,    'D', 0,     ESendAttachmentMenuRemoveAttachment },

        { 0, EStdKeyBackspace, 0, ESendAttachmentMenuRemoveAttachment },

        { 0,  'T', 0,     EFsEmailUiCmdGoToTop },

        { 0,  'B', 0,     EFsEmailUiCmdGoToBottom },

        { 0,    'J', 0,     EFsEmailUiCmdPageUp },

        { 0,    'K', 0,     EFsEmailUiCmdPageDown },

        { 0,    'H', 0,     ESendAttachmentMenuHelp },

        { 0,    'I', 0,     EFsEmailUiCmdActionsCollapseExpandAllToggle }

    };

// Shortcuts for settings and global settings views

const CFSEmailUiShortcutBinding::TShortcutBinding KSettingsShortcuts[] =

    {

        { 0,    'O', 0,     EFsEmailUiCmdOpen },

        { 0,  'T', 0,     EFsEmailUiCmdGoToTop },

        { 0,  'B', 0,     EFsEmailUiCmdGoToBottom },

        { 0,    'J', 0,     EFsEmailUiCmdPageUp },

        { 0,    'K', 0,     EFsEmailUiCmdPageDown },

        { 0,    'H', 0,     EFsEmailUiCmdHelp }

    };

///////////////////////

// The class definition 

CFSEmailUiShortcutBinding* CFSEmailUiShortcutBinding::NewL()

    {

    FUNC_LOG;

    CFSEmailUiShortcutBinding* self = new (ELeave) CFSEmailUiShortcutBinding();

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

// ----------------------------------------------------------------------------    

CFSEmailUiShortcutBinding::~CFSEmailUiShortcutBinding()

    {

    FUNC_LOG;

    delete iPtiEngine;

    iQwertyMappings = NULL; // owned by iPtiEngine

    iHalfQwertyMappings = NULL; // ownned by iPtiEngine

    iKbLayoutProperty.Close();

    }

// ----------------------------------------------------------------------------    

TInt CFSEmailUiShortcutBinding::CommandForShortcutKey( const TKeyEvent& aKey, 

                                                       TShortcutContext aContext ) const

    {

    FUNC_LOG;

    TText shortcut = aKey.iScanCode;

    TBuf<1> keyData; // we are only interested about the first char of the key

    TKeyBoardType kbType = KeyBoardType();

    if ( kbType == EQwerty4x12 || kbType == EQwerty4x10 || 

         kbType == EQwerty3x11 || kbType == ECustomQwerty )

        {

        // One of the QWERTY modes

        // Map the key to the corresponding character on the current keyboard

        // If Fn is held depressed, use the Fn mappings, otherwise use upper case mappings.

        TPtiTextCase caseMode = EPtiCaseUpper;

#ifdef RD_INTELLIGENT_TEXT_INPUT        

        if ( aKey.iModifiers&EModifierRightFunc )

            {

            caseMode = EPtiCaseFnLower;

            }

#endif // RD_INTELLIGENT_TEXT_INPUT

        if ( iQwertyMappings )

            {

            iQwertyMappings->SetKeyboardType( static_cast<TPtiKeyboardType>( kbType ) );

            iQwertyMappings->GetDataForKey( static_cast<TPtiKey>(aKey.iScanCode), 

                    keyData, caseMode );

            }

        }

    else if ( kbType == EHalfQwerty )

        {

        // Half-QWERTY mode

        // Map the key to the corresponding character in the Fn mode

        if ( iHalfQwertyMappings )

            {

#ifdef RD_INTELLIGENT_TEXT_INPUT 

            iQwertyMappings->SetKeyboardType( static_cast<TPtiKeyboardType>( kbType ) );

            iHalfQwertyMappings->GetDataForKey( static_cast<TPtiKey>(aKey.iScanCode), 

                    keyData, EPtiCaseFnLower );

#endif // RD_INTELLIGENT_TEXT_INPUT

            }

        }

    else

        {

        // ITU-T mode, use scancode directly without mapping

        }

    // Substitute the scan code with the mapped character if available

    if ( keyData.Length() )

        {

        shortcut = keyData[0];

        }

    // Map hash and asterisk keys separately if they have not been mapped in PtiEngine

    else if ( shortcut == EStdKeyHash )

        {

        shortcut = '#';

        }

    else if ( shortcut == EStdKeyNkpAsterisk )

        {

        shortcut = '*';

        }

    return CommandForShortcut( shortcut, aContext, aKey.iModifiers );

    }

// ----------------------------------------------------------------------------    

TInt CFSEmailUiShortcutBinding::CommandForShortcut( TText aShortcut, 

                                                    TShortcutContext aContext,

                                                    TUint32 aModifiers )

    {

    FUNC_LOG;

    TInt command = KErrNotFound;

    if ( aShortcut ) // value 0 is used as mark for no shortcut

        {

        TInt count = 0;

        const TShortcutBinding* bindings = NULL;

        // Select appropriate binding table    

        GetBindingsForContext( bindings, count, aContext );

        // Search command from the binding table

        for ( TInt i=0 ; i<count && command==KErrNotFound  ; ++i )

            {

            TBool isItutShortcut = ( aShortcut == bindings[i].iItutShortcut );

            TBool isQwertyShortcut = ( aShortcut == bindings[i].iQwertyShortcut );

            // Check the modifier keys for the QWERTY shortcut

            if ( isQwertyShortcut )

                {

                TUint32 matchingModifiers = ( aModifiers & bindings[i].iQwertyModifiers );

                if ( matchingModifiers != bindings[i].iQwertyModifiers )

                    {

                    isQwertyShortcut = EFalse;

                    }

                }

            if ( isItutShortcut || isQwertyShortcut )

                {

                command = bindings[i].iCommandId;

                }

            }

        }

    return command;

    }

// ----------------------------------------------------------------------------    

TText CFSEmailUiShortcutBinding::ShortcutForCommand( TInt aCommandId, 

                                                     TShortcutContext aContext, 

                                                     TBool aQwertyMode )

    {

    FUNC_LOG;

    TText shortcut = 0;

    TInt count = 0;

    const TShortcutBinding* bindings = NULL;

    // Select appropriate binding table

    GetBindingsForContext( bindings, count, aContext );

    // Search shortcut from the binding table

    for ( TInt i=0 ; i<count && !shortcut  ; ++i )

        {

        if ( aCommandId == bindings[i].iCommandId )

            {

            if ( aQwertyMode )

                {

                // Only single-key shortcuts are supported here.

                if ( !bindings[i].iQwertyModifiers )

                    {

                    shortcut = bindings[i].iQwertyShortcut;

                    }

                }

            else

                {

                shortcut = bindings[i].iItutShortcut;

                }

            }

        }

    return shortcut;

    }

// ----------------------------------------------------------------------------    

void CFSEmailUiShortcutBinding::AppendShortcutHintsL(

	CEikMenuPane& aMenuPane,

	TShortcutContext aContext ) const

    {

    FUNC_LOG;

    TKeyBoardType kbType = KeyBoardType();

    TBool isQwerty = 

        ( kbType != ENoKeyboard && kbType != EItutKeyPad && kbType != EHalfQwerty );

    // Browse through the commands in the menu pane and append shortcuts

    // where available.

    TInt count = aMenuPane.NumberOfItemsInPane();

    for ( TInt i = 0; i < count; ++i )

        {

        CEikMenuPaneItem::SData& itemData = aMenuPane.ItemDataByIndexL( i );

        TText hint = ShortcutForCommand(

        	itemData.iCommandId, aContext, isQwerty );        

        if ( hint )

            {

            AppendHintToCaption( itemData.iText, hint );

            }

        }

    }

// ----------------------------------------------------------------------------    

CFSEmailUiShortcutBinding::CFSEmailUiShortcutBinding()

    {

    FUNC_LOG;

    }

// ----------------------------------------------------------------------------    

void CFSEmailUiShortcutBinding::ConstructL()

    {

    FUNC_LOG;

    iPtiEngine = CPtiEngine::NewL();

    // Always use English mappings for QWERTY keyboards. This is because it is not 

    // certain that the mappings of the current language hold latin alphabet at all.

    // English should be available in all device variants as an optional input language.

    CPtiCoreLanguage* lang = 

        static_cast<CPtiCoreLanguage*>( iPtiEngine->GetLanguage( ELangEnglish ) );

    if (lang)

        {

        iQwertyMappings = static_cast<CPtiQwertyKeyMappings*>( lang->GetQwertyKeymappings() );

#ifdef RD_INTELLIGENT_TEXT_INPUT        

        iHalfQwertyMappings = static_cast<CPtiHalfQwertyKeyMappings*>( lang->GetHalfQwertyKeymappings() );

#endif // RD_INTELLIGENT_TEXT_INPUT        

        }

    lang = NULL; // owned by iPtiEngine

    if ( !iQwertyMappings && !iHalfQwertyMappings )

        {

        // In non-QWERTY devices we can free up PtiEngine right away, because

        // it is not needed anyway.

        delete iPtiEngine;

        iPtiEngine = NULL;

        }

    iKbLayoutProperty.Attach( KCRUidAvkon, KAknKeyBoardLayout );

    }

// ----------------------------------------------------------------------------    

CFSEmailUiShortcutBinding::TKeyBoardType CFSEmailUiShortcutBinding::KeyBoardType() const

    {

    FUNC_LOG;

    TInt keyboardType = ENoKeyboard;

    // RProperty does not define Get() as a constant function. This is

    // probably just a flaw in the interface. Cast away constness to

    // circumvent this.

    RProperty& kbProperty = const_cast<RProperty&>(iKbLayoutProperty);

    kbProperty.Get( keyboardType );

    return static_cast<TKeyBoardType>( keyboardType );

    }

// ----------------------------------------------------------------------------    

void CFSEmailUiShortcutBinding::GetBindingsForContext( const TShortcutBinding*& aBindingArray, 

                                                       TInt& aBindingCount,

                                                       TShortcutContext aContext )

    {

    FUNC_LOG;

    switch (aContext)

        {

        case EContextMailList:

            {

            aBindingCount = sizeof(KMailListShortcuts) / sizeof(TShortcutBinding);

            aBindingArray = KMailListShortcuts;

            }

        break;

        case EContextSearchResults:

            {

            aBindingCount = sizeof(KSearchResultsShortcuts) / sizeof(TShortcutBinding);

            aBindingArray = KSearchResultsShortcuts;

            }

        break;

        case EContextMailViewer:

            {

            aBindingCount = sizeof(KMailViewerShortcuts) / sizeof(TShortcutBinding);

            aBindingArray = KMailViewerShortcuts;

            }

        break;

        case EContextHtmlViewer:

            {

            aBindingCount = sizeof(KHtmlViewerShortcuts) / sizeof(TShortcutBinding);

            aBindingArray = KHtmlViewerShortcuts;

            }

        break;

        case EContextMailDetails:

        case EContextFolderList:

        case EContextAttachmentList:

        case EContextDownloadManager:

            {

            aBindingCount = sizeof(KGenericListShortcuts) / sizeof(TShortcutBinding);

            aBindingArray = KGenericListShortcuts;

            }

        break;

        case EContextMainGrid:

            {

            aBindingCount = sizeof(KMainGridShortcuts) / sizeof(TShortcutBinding);

            aBindingArray = KMainGridShortcuts;

            }

        break;

        case EContextSendAttachmentList:

            {

            aBindingCount = sizeof(KSendAttachmentListShortcuts) / sizeof(TShortcutBinding);

            aBindingArray = KSendAttachmentListShortcuts;

            }

        break;

        case EContextSettings:

            {

            aBindingCount = sizeof(KSettingsShortcuts) / sizeof(TShortcutBinding);

            aBindingArray = KSettingsShortcuts;

            }

        break;

        default:

            {

            Panic( EFSEmailUiUnexpectedValue );