* Description:   Controller class for deleting related UI behavior

// INCLUDES

#include <calcommon.h>

#include <eikenv.h>

#include <AknWaitDialog.h>

#include <calprogresscallback.h>

#include <calencommandhandler.h>

#include <calennotificationhandler.h>

#include <calenactionuiutils.h>

class CAknWaitDialog;

class CCalenGlobalData;

class CCalInstanceView;

class CCalInstance;

class CCalEntry;

class CCalEntryView;

 * CCalenDeleteUi encapsulates deleting related behavior

NONSHARABLE_CLASS( CCalenDeleteUi ) : public CBase,

                                      public MCalProgressCallBack,

                                      public MCalenNotificationHandler,

                                      public MCalenCommandHandler,

                                      public MProgressDialogCallback

    public: // public API

        /**

         * Symbian 1st phase constructor

         * @param aController Reference to CCalenController

         */

        static CCalenDeleteUi* NewL( CCalenController& aController );

        /**

         * Destructor

         */

        virtual ~CCalenDeleteUi();

    public: // From MCalenCommandHandler

        /**

         * Handles key presses.

         * 

         * @param aCommand The command Id of the key.

         */

        TBool HandleCommandL( const TCalenCommand& aCommand );

        /**

         * Allows extending this API without breaking BC.

         * 

         * @param aExtensionUid specifies

         * @return extension of the requested type

         */

        TAny* CalenCommandHandlerExtensionL( TUid aExtensionUid );

    public:  // New functions

        /**

         * UI sequence for deleting single entry. Shows UI queries and notes and

         * performs delete. Current entry is taken from Calendar Context

         */

        void DeleteCurrentEntryL();

        /**

         * UI sequence for deleting all entries. Shows UI queries and notes and

         * performs delete asynchronosuly.

         */

        void DeleteAllEntriesL();

        /**

         * UI sequence for deleting entries before given date.

         * Shows UI queries and notes and performs delete asynchronosuly.

         */

        void DeleteEntriesBeforeDateL();

        /**

         * UI sequence for deleting series repeating entry

         * Becasue a ThisAndAll repeat type has already been chosen by user,

         * no repeat query is required. Performs delete asynchronosuly.

         */

        void DeleteThisOrAllL( CalCommon::TRecurrenceRange aRepeatType );

    public:  // from MCalenNotificationHandler

        /**

         * Handle notifications

         * @param aNotification Notification to be handled

         */

        void HandleNotification(const TCalenNotification aNotification );

    private: // From MCalProgressCallBack

        /**

         * From MCalProgressCallBack

         */

        void Completed( TInt aError );

        /**

         * From MCalProgressCallBack

         */

        TBool NotifyProgress();

        /**

         * From MCalProgreeCallBack

         */

        void Progress( TInt aPercentageCompleted );

    private: // own methods

        /**

         * Handles deleting all entries in time range from aFirstDay to aLastDay.

         * Shows wait notification and given confirmation notifications.

         */

        void HandleDeleteMultipleEventsL( const TTime& aFirstDay,

                const TTime& aLastDay,

                TInt aConfNoteId );

        /**

         * Delete entries from given range

         */

        void DeleteDayRangeL( const TTime& aStart, const TTime& aEnd );

        /**

         * Delete entries than end at given midnight.

         * This is needed when deleting multiple entries, to handle

         * e.g all-day notes that extends to next day's midnight.

         */

        void DeleteEntriesEndingAtMidnightL( TTime aMidnight );

        /**

         * just a wrapper for leave

         */

        void DoCompletedL( TInt aFirstPassError );

        /**

         * Delete entry by passing CCalEntryView and CCalEntry

         * Will query user for confirmation before deletion

         * @return ETrue user confirms to delete EFalse otherwise 

         */

        TBool DeleteEntryL( CCalEntryView* aEntryView, CCalEntry* aEntry );

        /**

         * Delete entry without querying the user

         */

        TBool DeleteEntryWithoutQueryL();

        /**

         * Delete the given entry. Ask the user whether to delete the

         * instance or the entire series.

         */

        TBool DeleteSingleInstanceL( CCalInstance* aInstance );

        /**

         * Delete the given entry, using aRepeatType to determine

         * whether to delete the instance or the entire series.

         */

        TBool DeleteSingleInstanceL( CCalInstance* aInstance, 

                CalCommon::TRecurrenceRange aRepeatType );

        /**

         * Show the confirmation query with confirmation type and number of entries this query is for

         * @param aType Type of query: EDeleteEntry/ EDeleteTodo/ EDeleteTodos/ EDeleteAll

         */

        TInt ShowDeleteConfirmationQueryL( const CalenActionUiUtils::TDeleteConfirmationType aType,

                const TInt aCount=0 );

        /**

         * Delete single instance.

         * @param aInstance Pointer to the instance to be deleted

         * @param aHasRepeatType Whether or not the instance is repeating

         * @param aRepeatType Repeat type choosen to apply on delete

         * @return ETrue is user confirms to delete, EFalse otherwise

         */

        TBool DoDeleteSingleInstanceL( CCalInstance* aInstance,

                TBool aHasRepeatType,

                CalCommon::TRecurrenceRange aRepeatType );

        /**

         * Attempt to delete the instance using the Meeting Request utilities,

         * if MR viewers is enabled.

         * @param aInstance Pointer to the instance to be delete

         * @param aRepeatType Repeat Type choosen to apply on delete

         * @return ETrue if user confirms to delete, EFalse otherwise

         */

        TBool TryDeleteWithMrUtilsL( CCalInstance* aInstance, 

                CalCommon::TRecurrenceRange aRepeatType );

        /**

         * Leaving function, handle ECalenNotifyViewCreated

         */

        void HandleECalenNotifyViewCreatedL();

        /**

         * Multiple entries delete query

         */ 

        TInt ShowMultipleEntriesDeleteQueryL(TInt aCount);

    private: // own methods

        /**

         * C++ constructor

         */

        CCalenDeleteUi( CCalenController& aController );

        /**

         * Symbian 2nd phase constructor

         */

        void ConstructL();

    protected:  // Methods derived from MProgressDialogCallback

        /**

         * From MProgressDialogCallback

         * Callback method

         * called when a dialog is dismissed

         */

        void DialogDismissedL( const TInt aButtonId );

    private:

        /**

         * Delete entry using entry local uid

         */

        void DeleteEntryL(TCalLocalUid& aEntryLocalUid, TInt aColId );

        /**

         * Displays wait dialog while deleting marked entries

         */

        void DisplayWaitDialogL();

        /**

         * Dismiss wait dialog and show information note

         */

        void MarkedEntriesDeletedL();

        /**

         * Handles launching of the delete entries list query 

         */

        void HandleDeleteAllEntriesL();

    private: // data

        CEikonEnv* iEikEnv;

        CAknWaitDialog* iWaitDialog;

        TBool iIsDeleting; // True, if asynchronous delete is running

        TTime iStartTime;

        TTime iEndTime;

        // Confirmation note id is stored here. Note is shown when asynchronous

        // delete completes.

        TInt iConfirmationNoteId;

        CCalenGlobalData* iGlobalData;

        CCalenController& iController;

        // Stored command if the entry view

        // needs to constructed asyncronously

        TCalenCommand iStoredCommand;

        TInt iMutlipleContextIdsCount;

        TBool iMoreEntriesToDelete;

        TBool iDisplayQuery;

        TInt iEntriesToDelete;

        TInt iToShowDeleteNote;

        TInt iNumberOfCalendars;

        RArray<TInt> iDeleteColIds;

        CalCommon::TCalTimeRange *iDelAllRange;