photosgallery/controllers/collectionmanager/inc/glxcollectionmanagerimpl.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:    Implementation of collection manager API for external use
       
    15 *
       
    16 */
       
    17 
       
    18 
       
    19 
       
    20 
       
    21 #ifndef __C_GLXCOLLECTIONMANAGERIMPL_H__
       
    22 #define __C_GLXCOLLECTIONMANAGERIMPL_H__
       
    23 
       
    24 #include <e32base.h>
       
    25 #include <e32std.h>
       
    26 #include <mpxcollectionobserver.h>
       
    27 
       
    28 #include "glxcollectionmanager.h"
       
    29 
       
    30 class CGlxCollectionInfo;
       
    31 class MMPXCollectionUtility;
       
    32 class CMPXCollectionPath;
       
    33 
       
    34 /**
       
    35  * Collection manager internal implementation.
       
    36  *
       
    37  * @lib glxuiutilities.lib
       
    38  */
       
    39 NONSHARABLE_CLASS( CGlxCollectionManagerImpl ) 
       
    40 	: public CBase, public MMPXCollectionObserver
       
    41     {
       
    42 public:
       
    43 	/**
       
    44 	 * Constructor
       
    45 	 */
       
    46     CGlxCollectionManagerImpl();
       
    47 
       
    48     /**
       
    49      * Destructor
       
    50      */
       
    51     ~CGlxCollectionManagerImpl();
       
    52 
       
    53     /**
       
    54      * Adds a file to container asynchronously.
       
    55      * @param aUri URI of file to be added to the container.
       
    56      * @param aContainer Container to which item should be added.
       
    57      * @param aRequestStatus Request status that will be signalled when 
       
    58      *         request is complete or fails due to an error. aRequestStatus must
       
    59      *         be an iStatus member variable of an active object. Using
       
    60      *         User::WaitForRequest() will not work.
       
    61      */
       
    62     void AddToContainerL(const TDesC& aUri, 
       
    63     		CGlxCollectionManager::TCollection aContainer, TRequestStatus& aRequestStatus);
       
    64 
       
    65     /**
       
    66      * Adds a file to container asynchronously.
       
    67      * @param aUri URI of file to be added to the container.
       
    68      * @param aConatinerId MDS ID of container (album, tag, etc.)
       
    69      * @param aRequestStatus Request status that will be signalled when 
       
    70      *         request is complete or fails due to an error. aRequestStatus must
       
    71      *         be an iStatus member variable of an active object. Using
       
    72      *         User::WaitForRequest() will not work.
       
    73      */
       
    74      void AddToContainerL(const TDesC& aUri, 
       
    75         TUint32 aContainerId, TRequestStatus& aRequestStatus);
       
    76 
       
    77     /**
       
    78      * Retrieves collection info
       
    79      * @param aRequestStatus Request status that will be signalled when 
       
    80      *         request is complete or fails due asynchronous error
       
    81      * @param aInfo Contain the collection information upon return
       
    82      *              Must contain the collection info when called
       
    83      */
       
    84     void CollectionInfoL(CGlxCollectionInfo& aInfo,
       
    85         TRequestStatus& aRequestStatus);
       
    86 
       
    87     /**
       
    88      * Cancel an outstanding request
       
    89      */
       
    90     void Cancel();
       
    91 
       
    92 public: // from MMPXCollectionObserver
       
    93 	/**
       
    94 	 * See @ref MMPXCollectionObserver::HandleCollectionMessageL
       
    95 	 */
       
    96     void HandleCollectionMessageL(const TMPXCollectionMessage& aMessage);
       
    97     
       
    98 	/**
       
    99 	 * See @ref MMPXCollectionObserver::HandleCollectionMessageL
       
   100 	 */
       
   101     void HandleCollectionMessageL(const CMPXMessage& aMsg);
       
   102     
       
   103 	/**
       
   104 	 * See @ref MMPXCollectionObserver::HandleOpenL
       
   105 	 */
       
   106     void HandleOpenL(const CMPXMedia& aEntries,
       
   107                              TInt aIndex,TBool aComplete,TInt aError);
       
   108 	/**
       
   109 	 * See @ref MMPXCollectionObserver::HandleOpenL
       
   110 	 */
       
   111     void HandleOpenL(const CMPXCollectionPlaylist& aPlaylist ,TInt aError);  
       
   112     
       
   113 	/**
       
   114 	 * See @ref MMPXCollectionObserver::HandleCollectionMediaL
       
   115 	 */
       
   116     void HandleCollectionMediaL(const CMPXMedia& aMedia, 
       
   117             TInt aError);
       
   118     
       
   119 	/**
       
   120 	 * See @ref MMPXCollectionObserver::HandleCommandComplete
       
   121 	 */
       
   122     void HandleCommandComplete(CMPXCommand* aCommandResult, TInt aError);
       
   123     
       
   124 private:
       
   125 
       
   126     /**
       
   127      * Initialise the request.
       
   128      * Stores a pointer to aRequestStatus and sets aRequestStatus to KRequestPending.
       
   129      * @param aRequestStatus request to be signaled when asynchronous
       
   130      * operation completes.
       
   131      */
       
   132 	void InitializeRequest(TRequestStatus& aRequestStatus);
       
   133 	
       
   134 	/**
       
   135 	 * Completes the request.
       
   136 	 * Calls User::RequestComplete() on the request set by InitializeRequest().
       
   137 	 * @aError error message passed to User::RequestComplete()
       
   138 	 */
       
   139 	void CompleteRequest(TInt aError);
       
   140 
       
   141 	/**
       
   142 	 * Creates and opens an MPX collection utility.
       
   143 	 */ 
       
   144 	void OpenCollectionL();
       
   145 
       
   146    /**
       
   147      * Closes the MPX collection utitlity.
       
   148      */
       
   149 	void CloseCollection();
       
   150 
       
   151     /**
       
   152      * Performs the addition of an item to a container.
       
   153      * Assumes that the collection is open.
       
   154      */
       
   155 	void DoAddToContainerL();
       
   156 
       
   157 	/**
       
   158 	 * Helper method that is called by the two public AddToContainerL overloads
       
   159 	 * and in turn calls DoAddToContainer.
       
   160      * @param aUri URI of file to be added to the container.
       
   161      * @param aRequestStatus Request status that will be signalled when 
       
   162      *         request is complete or fails due to an error. aRequestStatus must
       
   163      *         be an iStatus member variable of an active object. Using
       
   164      *         User::WaitForRequest() will not work.
       
   165 	 */
       
   166     void AddToContainerL(const TDesC& aUri, TRequestStatus& aRequestStatus);
       
   167     
       
   168     /*
       
   169      *  Retrieves collection info
       
   170      *  Assumes that the collection is open.
       
   171      */
       
   172     void DoCollectionInfoL();
       
   173 
       
   174 private:
       
   175    /**
       
   176      * Collection utitility (onwed)
       
   177      */
       
   178 	MMPXCollectionUtility*  iCollectionUtility;
       
   179 	
       
   180     /**
       
   181      * Collection UID.
       
   182      */
       
   183 	TUid iCollectionId;
       
   184 
       
   185    /**
       
   186      * Container id
       
   187      */
       
   188 	TMPXItemId iContainerId;
       
   189 
       
   190    /**
       
   191      * Uri (owned)
       
   192      */
       
   193 	HBufC* iUri;
       
   194 
       
   195     /**
       
   196      * Collection info (not owned)
       
   197      */
       
   198 	CGlxCollectionInfo* iCollectionInfo;
       
   199     
       
   200 	/**
       
   201 	 * Request status (not owned)
       
   202 	 */
       
   203 	TRequestStatus* iRequestStatus;
       
   204     
       
   205     enum TState
       
   206     	{
       
   207     	EClosed,
       
   208     	EOpeningForAdd,
       
   209     	EOpeningForCollectionInfo,
       
   210     	EOpening,
       
   211     	EOpen,
       
   212     	EAdding,
       
   213     	ERequestingMedia
       
   214     	};
       
   215     	
       
   216     /** 
       
   217      * In the following states an asynchronous request is outstanding:
       
   218      * 
       
   219      * EOpeningForAdd,
       
   220      * EOpeningForCollectionInfo
       
   221      * EOpening
       
   222      * EAdding
       
   223      * ERequestingMedia
       
   224      *
       
   225      */    
       
   226     TState iState;	
       
   227     };
       
   228 
       
   229 #endif // __C_GLXCOLLECTIONMANAGERIMPL_H__