/*

* Copyright (c) 2008-2009 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:    Cloud View Context menu control

 *

*/

#ifndef GLXTAGSCONTEXTMENUCONTROL_H_

#define GLXTAGSCONTEXTMENUCONTROL_H_

#include <e32base.h>

#include <e32std.h>

#include <alf/alfcontrol.h>

#include "glxbubbletimer.h"                         //for timer functionality

//Forward Declaration

class CAlfGridLayout;

class CAlfEnv;

/**

 *MGlxItemMenuObserver is a class to handle the menu items in grid layout

 */

class MGlxItemMenuObserver

    {

public:

    /**

     * To Handle menu items in Grid layout

     * @param aCommand command to be handled

     */

    virtual void HandleGridMenuListL(TInt aCommand) = 0;

    };

class CGlxTagsContextMenuControl : public CAlfControl,

        public MGlxTimerNotifier

    {

public:

    /**     

     *  Perform the two phase construction

     *  @param aItemMenuObserver - handles the menu items in grid layout

     *  @return Pointer to newly created object

     */

    static CGlxTagsContextMenuControl* NewL(

            MGlxItemMenuObserver& aItemMenuObserver);

    /**     

     *  Perform the two phase construction

     *  @param aItemMenuObserver - handles the menu items in grid layout

     *  @return Pointer to newly created object

     */

    static CGlxTagsContextMenuControl* NewLC(

            MGlxItemMenuObserver& aItemMenuObserver);

    /**

     * Destroy the object and release all memory objects

     */

    ~CGlxTagsContextMenuControl();

public:

    //MGlxTimernotifier

    /**

     * Virtual Function from MGlxTimernotifier

     */

public:

    /**

     * Sets the grid layout on the screen with the Point specified

     * @param aPoint - Point from which grid has to be displayed

     */

    void SetDisplay(const TPoint& aPoint);

    /**

     * Hides/shows the grid layout

     * @param aOpacity - Opacity value

     */

    /**

     * Hides/shows the grid layout

     * @return value of menu's visibility

     */

    TBool ItemMenuVisibility();

    /**

     * Sets the drawable screen rect 

     * It also handles coordinates changed from Orientation

     * @param aRect - rect area where the Tags are drawn

     */

    void SetViewableRect(TRect aRect);

private:

    /**     

     *  constructor 

     *  @param aItemMenuObserver - handles the menu items in grid layout

     */

    CGlxTagsContextMenuControl(MGlxItemMenuObserver& aItemMenuObserver);

    /** 

     *  Perform the second phase of two phase construction

     */

    void ConstructL();

    /** 

     *  Creates the font 

     *  @return the fontId

     */

    TInt CreateFontL();

    /** 

     *  Creates the menulist and sets the Text style 

     *  @param aFontId - Sets the text style

     */

    void CreateMenuListL(TInt aFontId);

    /** 

     *  Calculates the maximum text width of menu items 

     */

    void CalculateMaxWidth();

    /** 

     *  Draws the line separators in Stylus menu

     */

    void DrawLineSeparatorsL();

    /**     

     *  Perform the two phase construction

     *  @param  aEvent - key Event to handle

     *  @return EKeyWasConsumed if key event is processed,

     *         otherwise EKeyWasNotConsumed

     */

    TBool OfferEventL(const TAlfEvent& aEvent);

private:

    //Observer to handle the menu items in grid layout

    MGlxItemMenuObserver& iItemMenuObserver;

    //Grid layout, not owning

    CAlfGridLayout* iGrid;

    /** The Alf environment*/

    CAlfEnv* iAlfEnv;

    //Slideshow text, not owning

    CAlfTextVisual* iSlideshowTextVisual;

    //Delete text, not owning

    CAlfTextVisual* iDeleteTextVisual;

    //Rename text, not owning

    CAlfTextVisual* iRenameTextVisual;

    // Anchor Layout

    CAlfAnchorLayout* iMainVisual;

    //variable used for providing delay

    CGlxBubbleTimer* iTimer;

    //Viewable rect

    TRect iViewableRect;

    //flag for stylus menu visibility

    TBool iItemMenuVisibility;

    //Maximum text width of a menu item

    TInt iMaxTextWidth;

    };

#endif /* GLXTAGSCONTEXTMENUCONTROL_H_ */