code.grnet.gr Git - pithos-ms-client/blob - trunk%2FPithos.Client.WPF%2FSelectiveSynch%2FDirectoryRecord.cs

   1 #region
   2 /* -----------------------------------------------------------------------
   3  * <copyright file="DirectoryRecord.cs" company="GRNet">
   4  *
   5  * Copyright 2011-2012 GRNET S.A. All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or
   8  * without modification, are permitted provided that the following
   9  * conditions are met:
  10  *
  11  *   1. Redistributions of source code must retain the above
  12  *      copyright notice, this list of conditions and the following
  13  *      disclaimer.
  14  *
  15  *   2. Redistributions in binary form must reproduce the above
  16  *      copyright notice, this list of conditions and the following
  17  *      disclaimer in the documentation and/or other materials
  18  *      provided with the distribution.
  19  *
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  22  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  23  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  24  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  25  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  28  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  31  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  32  * POSSIBILITY OF SUCH DAMAGE.
  33  *
  34  * The views and conclusions contained in the software and
  35  * documentation are those of the authors and should not be
  36  * interpreted as representing official policies, either expressed
  37  * or implied, of GRNET S.A.
  38  * </copyright>
  39  * -----------------------------------------------------------------------
  40  */
  41 #endregion
  42 using System;
  43 using System.Collections;
  44 using System.Collections.Generic;
  45 using System.Collections.Specialized;
  46 using System.Diagnostics;
  47 using System.IO;
  48 using System.Linq;
  49 using System.Text;
  50 using Caliburn.Micro;
  51 using Pithos.Client.WPF.Utils;
  52 using Pithos.Core.Agents;
  53 using Pithos.Interfaces;
  54
  55 namespace Pithos.Client.WPF.SelectiveSynch
  56 {
  57     [DebuggerDisplay("{Uri} : {IsChecked}")]
  58     public class DirectoryRecord :PropertyChangedBase, IEnumerable<DirectoryRecord>
  59     {
  60         private ObjectInfo _objectInfo;
  61         public ObjectInfo ObjectInfo
  62         {
  63             get { return _objectInfo; }
  64             set
  65             {
  66                 _objectInfo = value;
  67                 Uri = value.Uri;
  68             }
  69         }
  70
  71         public Uri Uri { get; set; }
  72         //public DirectoryInfo LocalInfo { get; set; }
  73
  74         DirectoryRecord _parent;
  75
  76         public bool Added { get; set; }
  77         public bool Removed { get; set; }
  78
  79         private bool? _isChecked=true;
  80         #region IsChecked
  81
  82         /// <summary>
  83         /// Gets/sets the state of the associated UI toggle (ex. CheckBox).
  84         /// The return value is calculated based on the check state of all
  85         /// child FooViewModels.  Setting this property to true or false
  86         /// will set all children to the same check state, and setting it
  87         /// to any value will cause the parent to verify its check state.
  88         /// </summary>
  89         public bool? IsChecked
  90         {
  91             get { return _isChecked; }
  92             set { this.SetIsChecked(value, true, true); }
  93         }
  94
  95         void SetIsChecked(bool? value, bool updateChildren, bool updateParent)
  96         {
  97             if (value == _isChecked)
  98                 return;
  99
 100             _isChecked = value;
 101
 102             //If the value is null both Added and Removed should be False
 103             Added = _isChecked??false;
 104             Removed = !(_isChecked??true);
 105
 106             if (updateChildren && _isChecked.HasValue)
 107                 this.Directories.Apply(c => c.SetIsChecked(_isChecked, true, false));
 108
 109             if (updateParent && _parent != null)
 110                 _parent.VerifyCheckState();
 111
 112             this.RaisePropertyChangedEventImmediately("IsChecked");
 113         }
 114
 115         void VerifyCheckState()
 116         {
 117             bool? state = null;
 118             for (var i = 0; i < this.Directories.Count(); ++i)
 119             {
 120                 bool? current = this.Directories.ElementAt(i).IsChecked;
 121                 if (i == 0)
 122                 {
 123                     state = current;
 124                 }
 125                 else if (state != current)
 126                 {
 127                     state = null;
 128                     break;
 129                 }
 130             }
 131             this.SetIsChecked(state, false, true);
 132         }
 133
 134         #endregion // IsChecked
 135
 136
 137         public bool IsInitiallySelected { get; private set; }
 138
 139         private List<DirectoryRecord>  _directories=new List<DirectoryRecord>();
 140         public List<DirectoryRecord> Directories
 141         {
 142             get { return _directories; }
 143             set { _directories= value; }
 144         }
 145
 146         public DirectoryRecord()
 147         {
 148
 149 /*
 150              _directories = new Lazy<List<DirectoryRecord>>(() =>
 151                 new List<DirectoryRecord>());
 152 */
 153 /*
 154              _directories = new Lazy<List<DirectoryRecord>>(() =>
 155                 (from directory in Info.EnumerateDirectories("*", SearchOption.TopDirectoryOnly)
 156                 where !directory.FullName.StartsWith(ignorePath)
 157                 select new DirectoryRecord(ignorePath) { Info = directory }).ToList());
 158 */
 159         }
 160
 161         private string _displayName;
 162
 163         public string DisplayName
 164         {
 165             get
 166             {
 167                 if (ObjectInfo != null)
 168                     return ObjectInfo.Name.Split('/').Last();
 169                 return _displayName;
 170             }
 171             set { _displayName = value; }
 172         }
 173
 174         public bool IsExplicitlyChecked
 175         {
 176             set { _isChecked=value; }
 177         }
 178
 179         public DirectoryRecord(ObjectInfo info)
 180         {
 181             ObjectInfo = info;
 182         }
 183
 184
 185 /*
 186         public IEnumerable<DirectoryInfo> GetCheckedDirectories()
 187         {
 188             var q = from record in this
 189                     where record.IsChecked==true
 190                     select record.Info;
 191             return q;
 192         }
 193 */
 194
 195 /*
 196         public void SetSelections(StringCollection selections)
 197         {
 198             IsChecked=selections.Contains(Info.FullName);
 199             foreach (var children in Directories)
 200             {
 201                 children.SetSelections(selections);
 202             }
 203         }
 204 */
 205
 206
 207         public IEnumerator<DirectoryRecord> GetEnumerator()
 208         {
 209             yield return this;
 210             foreach (var children in Directories)
 211                 foreach (var info in children)
 212                 {
 213                     yield return info;
 214                 }
 215         }
 216
 217         IEnumerator IEnumerable.GetEnumerator()
 218         {
 219             return GetEnumerator();
 220         }
 221
 222         public override int GetHashCode()
 223         {
 224             return ObjectInfo == null
 225                        ? (Uri == null ? DisplayName.GetHashCode() : Uri.GetHashCode())
 226                        : ObjectInfo.GetHashCode();
 227         }
 228
 229         public override bool Equals(object obj)
 230         {
 231             if (!(obj is DirectoryRecord))
 232                 return false;
 233             var other = (DirectoryRecord)obj;
 234             if (Uri != other.Uri)
 235                 return false;
 236             if (ObjectInfo== null ^ other.ObjectInfo== null)
 237                 return false;
 238
 239             if (ObjectInfo!= null && !ObjectInfo.Equals(other.ObjectInfo))
 240                 return false;
 241             var thisEnum = GetEnumerator();
 242             var otherEnum = other.GetEnumerator();
 243             //Skipt the first item, it is the current node itself
 244             thisEnum.MoveNext();
 245             otherEnum.MoveNext();
 246             while (true)
 247             {
 248                 var thisMove = thisEnum.MoveNext();
 249                 var otherMove = otherEnum.MoveNext();
 250
 251                 if (thisMove ^ otherMove)
 252                     return false;
 253                 if (!thisMove)
 254                     return true;
 255
 256                 if (!thisEnum.Current.Equals(otherEnum.Current))
 257                     return false;
 258             }
 259         }
 260     }
 261 }