/*

* Copyright (c) 2007-2008 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:   suite presentation model

*

*/

#ifndef C_HNSUITEMODEL_H

#define C_HNSUITEMODEL_H

#include <e32base.h>

#include <e32hashtab.h>

#include "hnsuiteobserver.h"

#include "hnglobals.h"

#include "hnitemmodel.h"

class CHnSuiteModelContainer;

class CHnItemModel;

class MHnMenuItemModelIterator;

class CHnActionModel;

class CHnEventHandler;

class MHnSuiteObserver;

class CHnItemsOrder;

class CHnItemFocusHandler;

/**

 *  Suite model class.

 *

 *  Represents suite. Evaluated from CHnMdSuite class, contains

 *  all data from services and xml configuration. It is used to fill data

 *  displayed on the screen.

 *

 *  @lib hnpresentationmodel

 *  @since S60 5.0

 *  @ingroup group_hnpresentationmodel

 */

NONSHARABLE_CLASS( CHnSuiteModel ) : public CBase

    {

public:

    /**

     * Two-phased constructor.

     * 

     * @since S60 5.0

     * @param aEventHandler Event handler.

     * @param aGenreName Suite genre identifier.

     */

    IMPORT_C static CHnSuiteModel* NewL( CHnEventHandler& aEventHandler,

            const TDesC& aGenreName );

    /**

    * Virtual Destructor.

    * 

    * @since S60 5.0

    */

    IMPORT_C ~CHnSuiteModel();

    /**

     * Return Suite's genre name.

     * Used for identifying the Suite.

     * 

     * @since S60 v5.0

     * @return The genre name.

     */

    IMPORT_C const TDesC& SuiteName() const;

    /**

     * Return Suite's name

     * This should be displayed in Status Pane

     * 

     * @since S60 v5.0

     * @return the name

     */

    IMPORT_C const TDesC& Title() const;

    /**

     * Sets the Suite's name

     * 

     * @since S60 v5.0

     * @param aName the name

     */

    IMPORT_C void SetTitleL( const TDesC& aName );

    /**

     * Return Suite's empty text

     * 

     * @since S60 v5.0

     * @return empty text if defined o

     */

    IMPORT_C const TDesC& EmptyText() const;

    /**

     * Sets the Suite's empty text

     * 

     * @since S60 v5.0

     * @param aName the name

     */

    IMPORT_C void SetEmptyTextL( const TDesC& aName );

    /**

     * Notifies all of the observers.

     * 

     * @since S60 v5.0

     * @param aEventType Event to be pushed to all observers.

     */    

    IMPORT_C void NotifyObserversL( THnCustomSuiteEvent aEventType );

    /**

     * Method used to indicate that item evaluation has finished.

     * 

     * @since S60 v5.0

     * @param aModelItemNumber Index of the item model.

     * @return True if observers were notified.

     */    

    IMPORT_C TBool ItemEvaluationFinishedL( TInt aModelItemNumber );

    /**

     * Method used to indicate that item evaluation has finished.

     * 

     * @since S60 v5.0

     */    

    IMPORT_C TBool SuiteEvaluationFinishedL();

    /**

     * Return Suite's Widget type

     * 

     * @since S60 v5.0

     * @return the Widget type or EUnspecified if not set

     */

    IMPORT_C TInt WidgetType() const;

    /**

     * Sets the Suite's Widget type

     * Also sets the correct template to the Widget Model

     * 

     * @since S60 v5.0

     * @param aWidgetType Suite's Widget type

     */

    IMPORT_C void SetWidgetType( THnSuiteWidgetType aWidgetType );

    /**

     * Gets menu structure for certain model

     *  

     * @since S60 v5.0

     * @param aItemId Id of the item model

     * @return Pointer to menu model

     */

    IMPORT_C MHnMenuItemModelIterator* GetMenuStructureL( TInt aItemId );

    /**

     * Adds item both to Aakash model and Matrix model.

     * 

     * @since S60 v5.0

     * @param aItemModel Item model.

     * @param aId Item id

     * @param aItemModelNumber Index of data model that creates the item.

     * @param aItemModelPosition Position in the particular data model

     */

    IMPORT_C void AddItemL( TInt aId, CHnItemModel* aItemModel,

            TInt aItemModelNumber, TInt aItemModelPosition );

    /**

     * Updates item template with template from suite model.

     * 

     * @since S60 v5.0

     * @param aId Id of the item to update template

     */

    IMPORT_C void UpdateItemTemplateL( TInt aId );

    /**

     * Updates item in Aakash model.

     * 

     * @since S60 v5.0

     * @param aPreviousItemCount Previous number of items in the suite.

     */

    IMPORT_C void RefreshMulModelL( TInt aPreviousItemCount = 0 );

    /**

     * Sets template for suite.

     * 

     * @since S60 v5.0

     * @param aValue template of the suite

     */

    IMPORT_C void SetTemplateL( const TDesC8& aValue );

    /**

     * Gets template.

     * 

     * @since S60 v5.0

     * @return template of the suite

     */

    IMPORT_C const TDesC8& GetTemplate() const;

    /**

     * Remove model by id both from Aakash model and Matrix model.

     * 

     * @since S60 v5.0

     * @param aId Id of the item to remove

     */

    IMPORT_C void RemoveItemL( TInt aId );

    /**

     * Removes all items from the suite model.

     * 

     * @since S60 v5.0

     */

    IMPORT_C void RemoveAllItems();

    /**

     * Gets item model id by its position in Aakash model.

     * 

     * @since S60 v5.0

     * @param aIndex Index of visual item in Aakash model

     * @return Id of the item model for input parameter

     */

    IMPORT_C TInt IdByIndex( TInt aIndex );

    /**

     * Gets item model count.

     * 

     * @since S60 v5.0

     * @return Count of item models.

     */

    IMPORT_C TInt GetItemModelsCount();

    /**

     * Gets actions models.

     * 

     * @return List of all actions for every event.

     */

    IMPORT_C RHashMap< TInt, CArrayPtr<CHnActionModel>* >& GetActions();

    /**

     * Gets actions models.

     * 

     * @param aId Event id

     * @return Array of actions models corresponding to event id

     */

    IMPORT_C CArrayPtr<CHnActionModel>* GetActions( TInt aId );

    /**

     * Gets item model.

     * 

     * @param aId Item model id

     * @return Item model corresponding to id, if not found returns NULL

     */

    IMPORT_C CHnItemModel* GetItemModel( TInt aId );

    /**

     * Returns visibility of toolbar for suite

     * 

     * @return TRUE if visible, otherwise FALSE

     */

    IMPORT_C TBool HasToolbar() const;

    /**

     * Registers suite observer.

     * 

     * @param aObserver observer

     * @param aPriority priority

     */

    IMPORT_C void RegisterSuiteObserverL( MHnSuiteObserver* aObserver, 

            TThreadPriority aPriority = EPriorityNormal);

    /**

     * Unregisters suite observer

     *

     * @param aObserver observer 

     */

    IMPORT_C void UnregisterSuiteObserver( MHnSuiteObserver* aObserver);

    /**

     * Checks if one of items between aIndexStart and

     * aIndexEnd is move-locked

     * 

     * @param aIndexStart starting item

     * @param aIndexEnd ending item

     * @return true if one of the preceeding items is locked 

     */

    IMPORT_C TBool IsItemBetweenMoveLocked( TInt aIndexStart, 

            TInt aIndexEnd );

    /**

     * Handles event.

     *

     * @since S60 5.0

     * @param aEventId Event id.

     * @param aRecipientId Recipient Id.

     * @param aEventParameters Parameters to event.

     * @return Status code.

     */

    TInt OfferHnEventL( 

            const TInt aEventId, const TInt aRecipientId, 

             CLiwGenericParamList* aEventParameters  );

    /**

     * Reorders item.

     * 

     * @param aFromIndex Index of the item to move.

     * @param aToIndex Index of the item to shift to.

     */

    IMPORT_C TInt ReorderItemsL( TInt aFromIndex, TInt aToIndex );

    /**

     * Returns items order object.

     * 

     * @return items order object from suite model

     */

    IMPORT_C CHnItemsOrder* GetItemsOrder();

public:

    /**

     * Returns true if an item is move locked.

     * 

     * @param aIndex item's index

     * @return true if an item is move-locked otherwise false

     */

    IMPORT_C TBool IsItemMoveLocked( TInt aIndex );

    /**

     * Returns type of an item.

     * 

     * @param aIndex an item's index

     * @return item's type

     */

    IMPORT_C TMcsItemType GetItemType( TInt aIndex );

    /**

     * Returns highlighted item's id.

     * 

     * @since S60 v5.0

     * @return highlighted item's id

     */

    IMPORT_C TInt GetSuiteHighlight();

    /**

     * Set highlighted item's id.

     * 

     * @since S60 v5.0

     * @param aHighLight sets highlighted item's id

     */

    IMPORT_C void SetSuiteHighlightL( TInt aHighLight );

    /**

     * Add items index to focus queue. Item will be highlighted/focused

     * during evaluation.

     * 

     * @since S60 v5.0

     * @param aCustomId Custom Id of an item which will be highlighted

     */

    IMPORT_C void QueueFocus( TInt aCustomId );

    /**

     * Sets suite's custom id.

     * 

     * @since S60 v5.0

     * @param aCustomId Custom identifier to be set.

     */

    IMPORT_C void SetCustomId( TInt64 aCustomId );

    /**

     * Returns custom identifier of the suite.

     * 

     * @since S60 v5.0

     * @return Custom identifier of the suite.

     */

    IMPORT_C TInt64 CustomId();

    /**

     * Activates highlight handling.

     * Used for highlight events for items.

     * 

     * @since S60 v5.0

     * @param aActive ETrue if active.

     */

    IMPORT_C void SetActiveL( TBool aActive );

    /**

     * Returns the state of the suite.

     * 

     * @since S60 v5.0

     * @return ETrue if active.

     */

    IMPORT_C TBool IsActive();

    /**

     * Notifies the model that the suite is visible.

     * Used for highlight events for items.

     * 

     * @since S60 v5.0

     * @param aVisible ETrue if visible.

     */

    IMPORT_C void SetVisibleL( TBool aVisible );

    /**

     * Returns item model matching given criteria.

     * 

     * @param aCustomId Item's custom id.

     * @param aIndex

     * @return Item model matching given custom_id, otherwise null.

     */

    IMPORT_C CHnItemModel* GetMatchingItemModelL( TInt64 aCustomId, TInt& aIndex );

    /**

     * Returns the suite's exit mode flag.

     */

    IMPORT_C TExitMode ExitMode();

    /**

     * Sets the exid mode.

     */

    IMPORT_C void SetExitMode( TExitMode aExitMode );

    /**

     * Removes all  LIW objects owned by this object.

     * 

     * LIW objects owned by non-LIW objects that are owned by

     * this object are also removed.

     * @since S60 5.0

     */

    void RemoveLiwObjects();

private:

    /**

     * Struct holding highlight information.

     * iWidgetIndex - index of the visible item in the UI widget.

     * iItemId - presentation model ID of the item.

     * iCustomId - custom ID from data provider.

     * 

     * @since S60 v5.0

     */

    struct TSuiteHighlight

        {

        /** Widget index. */

        TInt iWidgetIndex;

        /** Item Id. */

        TInt iItemId;

        /** Custom Id. */

        TInt64 iCustomId;

        };

    /**

     * C++ default constructor.

     * 

     * @since S60 v5.0

     * @param aEventHandler Event handler.

     */

    CHnSuiteModel( CHnEventHandler& aEventHandler );

    /**

     * Standard symbian 2nd phase constructor.

     * 

     * @since S60 v5.0

     * @param aGenreName Genre name for model

     */

    void ConstructL( const TDesC& aGenreName );

    /**

     * Launches the appropriate action if allowed.

     * Used for highlight events for items.

     * 

     * @since S60 v5.0

     * @param aItemId ID of the item.

     * @param aFocused ETrue if focused.

     */

    void HandleItemFocusL( TInt aItemId, TBool aFocused );

    /**

     * Set highlight on item.

     * 

     * @since S60 v5.0

     * @param aCustomId Custom id of the item.

     */

    void SetSuiteHighlightByCustomIdL( TInt64 aCustomId );

private:

    /**

     * Genre name.

     * Own.

     */

    HBufC* iSuiteName;

    /**

     * Suite name.

     * Own.

     */

    HBufC* iTitle;

    /**

     * Suite empty text

     * Own.

     */

    HBufC* iEmptyText;

    /**

     * Suite Widget type

     */

    THnSuiteWidgetType iWidgetType;

    /**

     * Template.

     */

    RBuf8 iTemplate;

    /**

     * Holds models evaluated from CHnMdItem objects

     */

    RHashMap< TInt, CHnItemModel* > iItemsModels;

    /**

     * Holds positions of item ids and suite id.

     * Own.

     */