photosgallery/viewframework/views/gridview/inc/glxgridviewcontainer.h
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     1 /*
       
     2  * Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
       
     3  * All rights reserved.
       
     4  * This component and the accompanying materials are made available
       
     5  * under the terms of "Eclipse Public License v1.0"
       
     6  * which accompanies this distribution, and is available
       
     7  * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8  *
       
     9  * Initial Contributors:
       
    10  * Nokia Corporation - initial contribution.
       
    11  *
       
    12  * Contributors:
       
    13  *
       
    14  * Description:    Grid view control class
       
    15  *
       
    16  */
       
    17 
       
    18 
       
    19 
       
    20 
       
    21 #ifndef CGLXGRIDVIEWCONTROL_H
       
    22 #define CGLXGRIDVIEWCONTROL_H
       
    23 
       
    24 #include <coecntrl.h>
       
    25 // Ganes observerers
       
    26 #include <ganes/HgScrollBufferObserverIface.h>
       
    27 #include <ganes/HgSelectionObserverIface.h>
       
    28 #include <ganes/HgMarkingObserverIface.h>
       
    29 
       
    30 // Photos Headers
       
    31 #include <mglxmedialistprovider.h>
       
    32 #include <glxmedialistiterator.h>                       // Interface for going through items in
       
    33 #include <glxmedialistfactory.h>                        // MGlxMediaListFactory
       
    34 
       
    35 #include <glxthumbnailcontext.h>
       
    36 #include <glxuistd.h>
       
    37 #include "glxgridvieweventobserver.h"
       
    38 
       
    39 class CHgGrid;
       
    40 class CGlxUiUtility;
       
    41 class CGlxGridViewMLObserver;
       
    42 class CGlxActiveMediaListRegistry;
       
    43 class CGlxThumbnailContext;
       
    44 class CGlxDRMUtility;
       
    45 class CAknsBasicBackgroundControlContext;
       
    46 class CGlxNavigationalState;
       
    47 
       
    48 //class declaration
       
    49 
       
    50 class CGlxGridViewContainer : 	public CCoeControl,
       
    51 								public MHgScrollBufferObserver,
       
    52 								public MHgSelectionObserver,
       
    53 								public MHgMarkingObserver
       
    54 	{
       
    55 public:
       
    56 	/**
       
    57 	 * Two-phased constructor.
       
    58 	 *
       
    59 	 * @since 3.0
       
    60 	 * @return Pointer to newly created object.
       
    61 	 */
       
    62 	static CGlxGridViewContainer *NewL(MGlxMediaList *aMediaList,CGlxUiUtility* aUiUtility,MGlxGridEventObserver& aObserver );
       
    63 
       
    64 	/**
       
    65 	 * Two-phased constructor.
       
    66 	 *
       
    67 	 * @since 3.0
       
    68 	 * @return Pointer to newly created object.
       
    69 	 */
       
    70 	static CGlxGridViewContainer *NewLC(MGlxMediaList *aMediaList,CGlxUiUtility* aUiUtility,MGlxGridEventObserver& aObserver);
       
    71 
       
    72 	//destructor
       
    73 	~CGlxGridViewContainer();
       
    74 
       
    75 
       
    76 	TBool HandleViewCommandL(TInt aCommand);
       
    77 protected: // from MHgScrollBufferObserver
       
    78 	void Request(TInt aRequestStart, TInt aRequestEnd, THgScrollDirection aDirection);
       
    79 	void Release(TInt aReleaseStart, TInt aReleaseEnd);
       
    80 
       
    81 protected: // from MHgSelectionObserver
       
    82 	void HandleSelectL( TInt aIndex );
       
    83 	void HandleOpenL( TInt aIndex );
       
    84 
       
    85 protected: // from MHgMarkingObserver
       
    86 
       
    87 	void HandleMarkingL( TInt aIndex, TBool aMarked );
       
    88 
       
    89 public: // From CCoeControl
       
    90 
       
    91 	TTypeUid::Ptr MopSupplyObject(TTypeUid aId);
       
    92 	TKeyResponse OfferKeyEventL(const TKeyEvent &aKeyEvent, TEventCode aType);
       
    93 
       
    94 	//handle orientaion realted changes
       
    95 	void HandleResourceChange(TInt aType);
       
    96 private:
       
    97 	/**
       
    98 	 * C++ default constructor.
       
    99 	 */
       
   100 	CGlxGridViewContainer(MGlxMediaList *aMediaList,CGlxUiUtility* aUiUtility,MGlxGridEventObserver& aObserver);
       
   101 	/**
       
   102 	 * By default Symbian 2nd phase constructor is private.
       
   103 	 */
       
   104 	void ConstructL();
       
   105 
       
   106 	void RequestL(TInt aRequestStart, TInt aRequestEnd);
       
   107 
       
   108 	//create grid
       
   109 	void CreateGridL();
       
   110 
       
   111 	/**
       
   112 	 * Set grid thumbnail context with BlokyIterator to fetch
       
   113 	 * grid thumbnails
       
   114 	 */
       
   115 	void SetGridThumbnailContextL();
       
   116 
       
   117 	// Create HG Grid widget
       
   118 	void CreateHgGridWidgetL();
       
   119 
       
   120 	// Create an observer and pass MediaList and HGGrid objects
       
   121 	void CreateGridMediaListObserverL();
       
   122 
       
   123 	// Create Grid once again after returning from FS as No calls for handleItem added.
       
   124 	void CreateGridAfterFSDeactivatedL();
       
   125 	/**
       
   126 	 * Set FS thumbnail context with FromFocusOutwardIterator
       
   127 	 * for FS thumbnails
       
   128 	 */
       
   129 	void FetchFSThumbnailL();
       
   130 	/**
       
   131 	 * Set the Time stamp for Scrollbar Time Strip
       
   132 	 */
       
   133 	void SetDownloadLinksTimeL();
       
   134 	/**
       
   135 	 * Removes the thumbnail contexts for FS
       
   136 	 */
       
   137 	void RemoveFSThumbnailContext();
       
   138 	/**
       
   139 	 * Handle Multiple marking
       
   140 	 */
       
   141 	void HandleMultipleMarkingL(TInt aIndex , TBool aMarked );
       
   142 	/**
       
   143 	 * Set the Icons
       
   144 	 */
       
   145 	void SetIconsL(TInt index);
       
   146 
       
   147 	//handle enterkey realted events
       
   148 	void HandleEnterKeyEventL(TInt aCommand);
       
   149 
       
   150 	/**
       
   151 	 * Checks the availability of relevant thumbnail(Quality or Speed) attribute
       
   152 	 * @param aIndex Media index to check the thumbnail attribute
       
   153 	 * @return ETrue if relevant thumbnail available 
       
   154 	 *         EFalse if relevant thumbnail not available 
       
   155 	 */ 
       
   156 	TBool HasRelevantThumbnail(TInt aIndex);
       
   157 
       
   158 private:
       
   159 	//medialist
       
   160 	MGlxMediaList* iMediaList;				    // MGlxMedialist , to Create MediaList
       
   161 
       
   162 	//Drmutility
       
   163 	CGlxUiUtility* iUiUtility;
       
   164 
       
   165 	//No of visible items in a page/view
       
   166 	TInt  iItemsPerPage;
       
   167 
       
   168 	// HG  Grid instance
       
   169 	CHgGrid* iHgGrid;
       
   170 
       
   171 	// Medialist observer for Grid view
       
   172 	CGlxGridViewMLObserver* iGlxGridMLObserver;
       
   173 
       
   174 	/// Active media list registry stores the pointer to the active media list
       
   175 	/// Allows UPnP to know when list has changed
       
   176 	CGlxActiveMediaListRegistry* iActiveMediaListRegistry;
       
   177 
       
   178 	// Thumbnail context
       
   179 	CGlxThumbnailContext* iThumbnailContext;
       
   180 
       
   181 	// FS thumbnail context
       
   182 	CGlxThumbnailContext* iFsThumbnailContext;
       
   183 
       
   184 	// Iterators for Grid and FS
       
   185 	TGlxFromManualIndexBlockyIterator iBlockyIterator;
       
   186 	TGlxFromFocusOutwardIterator iFsFromFocusOutwardIterator;
       
   187 
       
   188 	// Grid Icon size from FS view
       
   189 	TSize iGridIconSize;
       
   190 
       
   191 	// Flag to indicate the downloads plugin
       
   192 	TBool iDownloadsPlugin;
       
   193 
       
   194 	// Bool to check backward navigation
       
   195 	TBool iBackwardActivation;
       
   196 
       
   197 	// Provides DRM related functionality
       
   198 	CGlxDRMUtility* iDRMUtility;
       
   199 
       
   200 	// Background context for the themes to be used in MopSupplyObject
       
   201 	CAknsBasicBackgroundControlContext* iBgContext; //Own
       
   202 
       
   203 	//Grid Thumbnail Attribs
       
   204 	TMPXAttribute iQualityTnAttrib;
       
   205 	TMPXAttribute iSpeedTnAttrib;
       
   206 
       
   207 	// Making the default FSActivation as false
       
   208 	TBool iFullscreenViewActivated;
       
   209 
       
   210 	// Navigational state need to be changed while launching fullscreen
       
   211 	CGlxNavigationalState* iNavigationalstate;
       
   212 
       
   213 	// making the default mode of marking as false
       
   214 	TBool iMultipleMarkingActive ;
       
   215 
       
   216 	//flag to prevent call to HandleOpen( ) on multiple tap for video
       
   217 	TBool iIsFSVideoViewActivating;
       
   218 
       
   219 	//observer
       
   220 	MGlxGridEventObserver& 	iGlxGridViewObserver;
       
   221 	};
       
   222 
       
   223 #endif // CGLXGRIDVIEWCONTROL_H
       
   224