/*

* Copyright (c) 2009 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:

* Declares widget listbox for WidgetManager

*

*/

#ifndef ___WMLISTBOX_H__

#define ___WMLISTBOX_H__

// INCLUDES

#include <eiklbi.h>

#include <eiktxlbx.h>

#include <eiktxlbm.h>

#include <eikfrlb.h>

#include <eiktxlbm.h>

#include <aknlists.h>

#include <touchfeedback.h>

#include <touchlogicalfeedback.h>

#include <aknlongtapdetector.h> 

#include "wmwidgetdataobserver.h"

#include "wmwidgetdata.h"

// FORWARD DECLARATIONS

class CWmListBox;

class CWmPlugin;

class CListBoxView;

class CFormattedCellListBoxData;

class CAknLongTapDetector;

class CWmListModel;

class CWmWidgetData;

class CAknStylusPopUpMenu;

class MEikMenuObserver;

// CLASS DECLARATIONS

/**

 * CWmListItemDrawer

 */

NONSHARABLE_CLASS( CWmListItemDrawer ): public CFormattedCellListBoxItemDrawer

	{

public:

    /** Two-phased constructor. */

	static CWmListItemDrawer* NewL(

                CWmPlugin& aWmPlugin,

                MTextListBoxModel* aTextListBoxModel,

                const CFont* aFont,

                CFormattedCellListBoxData* aFormattedCellData,

                CWmListBox* aListBox  );

    /** Destructor. */

    ~CWmListItemDrawer();

    /** Default logo image. */

    const CFbsBitmap* DefaultLogoImage();

    /** Default logo mask. */

    const CFbsBitmap* DefaultLogoMask();

public:

    /**

     * from CFormattedCellListBoxItemDrawer:

     * draws a single list box item

     */

    void DrawItem(

                TInt aItemIndex, TPoint aItemRectPos, 

                TBool aItemIsSelected, TBool aItemIsCurrent, 

                TBool aViewIsEmphasized, TBool aViewIsDimmed ) const;

private:

    /** Constructor for performing 1st stage construction */

    CWmListItemDrawer( 

                CWmPlugin& aWmPlugin,

                MTextListBoxModel* aTextListBoxModel,  

                const CFont* aFont,  

                CFormattedCellListBoxData* aFormattedCellData,

                CWmListBox* aListBox );

    /** 2nd phase constructor */

    void ConstructL();

    /**

     * re-calculates all rects, sizes and resizes bitmaps, that are

     * stored as members. Called from DrawItem if it is found that the

     * draw area size has changed from previous, resulting all stored

     * rectangles and bitmaps to invalidate.

     * @param aSize requested size of the item being drawn.

     */

    void CalculateRectangles( const TSize& aSize);

	/**

	* Draws a frame rectangle for an item.

	* @param aOutterRect outter rectangle.

	* @param aInnerRect inner rectangle.

	* @param aID Skin item id. 

	*/

	void DrawFrame(

            const TRect& aOutterRect,

            const TRect& aInnerRect,

            const TAknsItemID& aID,

			const TAknsItemID& aCenterID ) const;

	/**

	* Draws a rectangle for an item.

	* @param aActualItemRect the rectangular area to be drawn.

	*/

	void DrawItemRect( const TRect& aActualItemRect ) const;

private: // data members

    /** 

     * the plugin root (not owned) 

     */

    CWmPlugin& iWmPlugin;

    /** 

     * pointer to the list box data (not owned) 

     */

    CFormattedCellListBoxData* iCellData;

    /** 

     * pointer to the listbox (not owned) 

     */

    CWmListBox* iListBox;

    /** 

     * current font used in drawing (not owned) 

     */

    const CFont*    iFont;

    /** 

     * item size used in calculating all the rects and bitmaps 

     */

    TSize iCurrentSize;

    /** 

     * logo area (relative to item upper left corner) 

     */

    TRect iRelativeLogoRect;

    /** 

     * add button area (relative to item upper left corner) 

     */

    TRect iRelativeAddButtonRect;

    /** 

     * title area (relative to item upper left corner) 

     */

    TRect iRelativeTitleRect;

    /** 

     * add-button bitmap

     */

    CFbsBitmap*         iAddWidgetBtnImage;

    /** 

     * add-button mask 

     */

    CFbsBitmap*         iAddWidgetBtnMask;

    /** 

     * default logo (when widget does not have one) bitmap 

     */

    CFbsBitmap*         iDefaultLogoImage;

    /** 

     * default logo (when widget does not have one) mask 

     */

    CFbsBitmap*         iDefaultLogoImageMask;

	};

// CLASS DECLARATIONS

/**

 * CWmListBox

 */

NONSHARABLE_CLASS( CWmListBox ): public CAknDouble2LargeStyleListBox,

                      public MWmWidgetDataObserver

	{

public:

    /**

     * Two-phased constructor.

     */

	static CWmListBox* NewL(

	        CWmPlugin& aWmPlugin,

            const TRect& aRect,

            const CCoeControl* aParent,  

            TInt aFlags = 0 );

    /** Destructor. */

    ~CWmListBox();

public: // API for manipulating list content

    /** Default Logo. */

    const CFbsBitmap* DefaultLogo();

    /** Default Logo mask. */

    const CFbsBitmap* DefaultMask();

    /** 

     * Findbox visibility

     * 

     * @param aVisibility sets find pane visibility

     */

    inline void SetFindPaneIsVisible( TBool aVisibility );

    /** 

     * Currently selected item index 

     * 

     * @return return currently selected item 

     */

    TInt CurrentListBoxItemIndex();

    /** 

     * real index for listbox item if findbox is active 

     * 

     * @return return index from original list for currently selected item

     */

    TInt RealIndex( TInt aIndex );

    /** 

     * number of items in the widget data array (also items on the list) 

     * 

     * @return count of widget data array

     */

    inline TInt WidgetDataCount();

    /** 

     * currently selected item

     * @return the selected item, or NULL if nothing selected

     */

    CWmWidgetData* WidgetData();

    /** 

     * gets an item by index 

     * 

     * @param aItemIndex index for item to return

     */

    CWmWidgetData& WidgetData( TInt aItemIndex );

    /**

     * gets the constant widget data array

     */

    inline const RWidgetDataValues& WidgetDataArray();

    /** 

     * inserts widget data to the model. Takes ownership of the object.

     * The widget data will appear to correct location in natural order:

     * - in previously saved position, if it has been viewed before

     *   (widget data must have a pointer to persistent widget order)

     * - in case this is a new widget, it will appear topmost

     * - in case there is no persistent widgets order or it is empty,

     *   the widget is added in alphabetical order

     * 

     * NOTE: caller must call HandleItemAdditionL() for the listbox after

     * adding all widget datas to update the listbox correctly!

     * 

     * @param aWidget Data data to add

     */

    void AddWidgetDataL( CWmWidgetData* aWidgetData );

    /** 

     * removes widget data from given index in the model

     * The method reorganises the list model and size.

     * Drawing is still needed to update the appearance.

     * 

     * @param aItemIndex index to remove

     * */

    void RemoveWidgetData( TInt aItemIndex/*, TBool aRedraw = ETrue*/ );

    /** 

     * requests to redraw item in given index position 

     * 

     * @param aItemIndex index to redraw

     */

    void RedrawItem( TInt aItemIndex );

    /** sort order of widgets in the list */

    enum TSortOrder

        {

        /** sort list as it was on last run */

        EStoredOrder,

        /** sort alphabetically */

        EAlphabetical,

        /** show latest installed first */

        ELatestFirst

        };

    /** 

     * sets the list sort order 

     * 

     * @param aOrder sort order

     */

    void SetSortOrderL( TSortOrder aOrder );

    /**

     * Responds to layout switched.

     */

    void HandleLayoutChanged();

	/** 

     * State of pointer down event 

     * 

     * @return ETrue if pointer is down

     */

    inline TBool PressedDown();

    /**

     * Returns size of logo 

     * 

     * @return Size of logo rect

     */

    TSize LogoSize();

private: // from CEikTextListBox

    /**

     * Creates the item drawer.

     * 

     * @see CEikTextListBox::CreateItemDrawerL

     */

	void CreateItemDrawerL();

protected: // from base class CCoeControl

    /**

     * Sets the control's extent, specifying a rectangle.

     * 

     * @see CCoeControl::SizeChanged

     */

    void SizeChanged();

private: // from base class CCoeControl

    /*

     * Draws the control.

     * 

     * @see CCoeControl::Draw

     */

    void Draw( const TRect& aRect ) const;

	/**

	 * Handles pointer events.

	 * 

	 * @see CCoeControl::HandlePointerEventL

	 */

	void HandlePointerEventL( const TPointerEvent& aPointerEvent );

private:

  	 /** Constructor for performing 1st stage construction */

    CWmListBox( CWmPlugin& aWmPlugin );

    /** 2nd phase constructor */

    void ConstructL(

            const TRect& aRect,

            const CCoeControl* aParent,

            TInt aFlags );

protected: // from MWmWidgetDataObserver

    /** 

     * widget needs redrawing 

     * 

     * @param aWidgetData item to redraw

     */

    void HandleWidgetDataChanged( CWmWidgetData* aWidgetData );

private: // own methods

    /** 

     * linear order for sorting, depending on the sort type being used 

     */

    TLinearOrder<CWmWidgetData> SortOrder( TSortOrder aOrder );

private:

    /** 

     * the plugin root (not owned) 

     */

    CWmPlugin&          iWmPlugin;

    /** 

     * array of widget data objects (the list model) 

     */

    RWidgetDataValues   iWidgetDatas;

    /** 

     * the currently active item ADD button's rectangle, for push recognition 

     */

    TRect               iButtonRect;

    /** 

     * state of list box find pane 

     */

    TBool               iFindPaneIsVisible;

	/** 

     * state of pointer pressed down and hold 

     */

    TBool               iPressedDown;

	};

#include "wmlistbox.inl"

#endif ___WMLISTBOX_H__

// End of File