1 /*

     2 * Copyright (c) 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:

    15 *

    16 */

    17 using System;

    18 using System.Collections.Generic;

    19 using System.Text;

    20 using System.IO;

    21 

    22 namespace SymbianUtils.FileSystem

    23 {

    24     public class FSExtensionList : IEnumerable<FSExtensionDescriptor>

    25     {

    26         #region Constructors

    27         public FSExtensionList()

    28         {

    29         }

    30         #endregion

    31 

    32         #region API

    33         public void Clear()

    34         {

    35             iEntries.Clear();

    36         }

    37 

    38         public void Add( string aExtension, string aDescription )

    39         {

    40             Add( new FSExtensionDescriptor( aExtension, aDescription ) );

    41         }

    42 

    43         public void Add( FSExtensionDescriptor aEntry )

    44         {

    45             if ( !Contains( aEntry ) )

    46             {

    47                 iEntries.Add( aEntry.GetHashCode(), aEntry );

    48             }

    49         }

    50 

    51         public void AddRange( IEnumerable<FSExtensionDescriptor> aEntries )

    52         {

    53             foreach ( FSExtensionDescriptor entry in aEntries )

    54             {

    55                 Add( entry );

    56             }

    57         }

    58 

    59         public bool Contains( string aExtension )

    60         {

    61             bool ret = false;

    62             //

    63             foreach ( FSExtensionDescriptor entry in this )

    64             {

    65                 if ( entry.ContainsExtension( aExtension ) )

    66                 {

    67                     ret = true;

    68                     break;

    69                 }

    70             }

    71             //

    72             return ret;

    73         }

    74 

    75         public bool Contains( FSExtensionDescriptor aEntry )

    76         {

    77             bool ret = iEntries.ContainsKey( aEntry.GetHashCode() );

    78             return ret;

    79         }

    80         #endregion

    81 

    82         #region Properties

    83         public int Count

    84         {

    85             get { return iEntries.Count; }

    86         }

    87 

    88         public FSExtensionDescriptor this[ int aIndex ]

    89         {

    90             get { return iEntries[ aIndex ]; }

    91         }

    92 

    93         public FSExtensionDescriptor this[ string aExtension ]

    94         {

    95             get

    96             {

    97                 FSExtensionDescriptor ret = null;

    98                 //

    99                 if ( Contains( aExtension ) )

   100                 {

   101                     FSExtensionDescriptor temp = new FSExtensionDescriptor( aExtension );

   102                     ret = iEntries[ temp.GetHashCode() ];

   103                 }

   104                 //

   105                 return ret;

   106             }

   107         }

   108         #endregion

   109 

   110         #region Internal methods

   111         #endregion

   112 

   113         #region From System.Object

   114         public override string ToString()

   115         {

   116             // Image Files(*.BMP;*.JPG;*.GIF)|*.BMP;*.JPG;*.GIF|All files (*.*)|*.*

   117             StringBuilder ret = new StringBuilder();

   118 

   119             foreach ( FSExtensionDescriptor ext in this )

   120             {

   121                 string extString = ext.ToString();

   122                 ret.AppendFormat( "{0};", extString );

   123             }

   124 

   125             // Add "all files"

   126             ret.Append( "All Files (*.*)|*.*" );

   127 

   128             return ret.ToString();

   129         }

   130         #endregion

   131 

   132         #region From IEnumerable<FSExtensionDescriptor>

   133         public IEnumerator<FSExtensionDescriptor> GetEnumerator()

   134         {

   135             foreach ( KeyValuePair<int, FSExtensionDescriptor> kvp in iEntries )

   136             {

   137                 yield return kvp.Value;

   138             }

   139         }

   140 

   141         System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()

   142         {

   143             foreach ( KeyValuePair<int, FSExtensionDescriptor> kvp in iEntries )

   144             {

   145                 yield return kvp.Value;

   146             }

   147         }

   148         #endregion

   149 

   150         #region Data members

   151         private SortedList<int, FSExtensionDescriptor> iEntries = new SortedList<int, FSExtensionDescriptor>();

   152         #endregion

   153     }

   154 }