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.IO;
  47 using System.Linq;
  48 using System.Text;
  49 using Caliburn.Micro;
  50 using Pithos.Client.WPF.Utils;
  51 using Pithos.Core.Agents;
  52 using Pithos.Interfaces;
  53
  54 namespace Pithos.Client.WPF.SelectiveSynch
  55 {
  56     public class DirectoryRecord :PropertyChangedBase, IEnumerable<DirectoryRecord>
  57     {
  58         private ObjectInfo _objectInfo;
  59         public ObjectInfo ObjectInfo
  60         {
  61             get { return _objectInfo; }
  62             set
  63             {
  64                 _objectInfo = value;
  65                 Uri = value.Uri;
  66             }
  67         }
  68
  69         public Uri Uri { get; set; }
  70         //public DirectoryInfo LocalInfo { get; set; }
  71
  72         DirectoryRecord _parent;
  73
  74         public bool Added { get; set; }
  75         public bool Removed { get; set; }
  76
  77         private bool? _isChecked=true;
  78         #region IsChecked
  79
  80         /// <summary>
  81         /// Gets/sets the state of the associated UI toggle (ex. CheckBox).
  82         /// The return value is calculated based on the check state of all
  83         /// child FooViewModels.  Setting this property to true or false
  84         /// will set all children to the same check state, and setting it
  85         /// to any value will cause the parent to verify its check state.
  86         /// </summary>
  87         public bool? IsChecked
  88         {
  89             get { return _isChecked; }
  90             set { this.SetIsChecked(value, true, true); }
  91         }
  92
  93         void SetIsChecked(bool? value, bool updateChildren, bool updateParent)
  94         {
  95             if (value == _isChecked)
  96                 return;
  97
  98             _isChecked = value;
  99
 100             //If the value is null both Added and Removed should be False
 101             Added = _isChecked??false;
 102             Removed = !(_isChecked??true);
 103
 104             if (updateChildren && _isChecked.HasValue)
 105                 this.Directories.Apply(c => c.SetIsChecked(_isChecked, true, false));
 106
 107             if (updateParent && _parent != null)
 108                 _parent.VerifyCheckState();
 109
 110             this.RaisePropertyChangedEventImmediately("IsChecked");
 111         }
 112
 113         void VerifyCheckState()
 114         {
 115             bool? state = null;
 116             for (var i = 0; i < this.Directories.Count(); ++i)
 117             {
 118                 bool? current = this.Directories.ElementAt(i).IsChecked;
 119                 if (i == 0)
 120                 {
 121                     state = current;
 122                 }
 123                 else if (state != current)
 124                 {
 125                     state = null;
 126                     break;
 127                 }
 128             }
 129             this.SetIsChecked(state, false, true);
 130         }
 131
 132         #endregion // IsChecked
 133
 134
 135         public bool IsInitiallySelected { get; private set; }
 136
 137         private List<DirectoryRecord>  _directories=new List<DirectoryRecord>();
 138         public List<DirectoryRecord> Directories
 139         {
 140             get { return _directories; }
 141             set { _directories= value; }
 142         }
 143
 144         public DirectoryRecord()
 145         {
 146
 147 /*
 148              _directories = new Lazy<List<DirectoryRecord>>(() =>
 149                 new List<DirectoryRecord>());
 150 */
 151 /*
 152              _directories = new Lazy<List<DirectoryRecord>>(() =>
 153                 (from directory in Info.EnumerateDirectories("*", SearchOption.TopDirectoryOnly)
 154                 where !directory.FullName.StartsWith(ignorePath)
 155                 select new DirectoryRecord(ignorePath) { Info = directory }).ToList());
 156 */
 157         }
 158
 159         private string _displayName;
 160
 161         public string DisplayName
 162         {
 163             get
 164             {
 165                 if (ObjectInfo != null)
 166                     return ObjectInfo.Name;
 167                 return _displayName;
 168             }
 169             set { _displayName = value; }
 170         }
 171
 172         public DirectoryRecord(ObjectInfo info)
 173         {
 174             ObjectInfo = info;
 175         }
 176
 177
 178 /*
 179         public IEnumerable<DirectoryInfo> GetCheckedDirectories()
 180         {
 181             var q = from record in this
 182                     where record.IsChecked==true
 183                     select record.Info;
 184             return q;
 185         }
 186 */
 187
 188 /*
 189         public void SetSelections(StringCollection selections)
 190         {
 191             IsChecked=selections.Contains(Info.FullName);
 192             foreach (var children in Directories)
 193             {
 194                 children.SetSelections(selections);
 195             }
 196         }
 197 */
 198
 199
 200         public IEnumerator<DirectoryRecord> GetEnumerator()
 201         {
 202             yield return this;
 203             foreach (var children in Directories)
 204                 foreach (var info in children)
 205                 {
 206                     yield return info;
 207                 }
 208         }
 209
 210         IEnumerator IEnumerable.GetEnumerator()
 211         {
 212             return GetEnumerator();
 213         }
 214
 215         public override int GetHashCode()
 216         {
 217             return ObjectInfo.GetHashCode();
 218         }
 219
 220         public override bool Equals(object obj)
 221         {
 222             if (!(obj is DirectoryRecord))
 223                 return false;
 224             var other = (DirectoryRecord)obj;
 225             if (Uri != other.Uri)
 226                 return false;
 227             if (ObjectInfo== null ^ other.ObjectInfo== null)
 228                 return false;
 229
 230             if (ObjectInfo!= null && !ObjectInfo.Equals(other.ObjectInfo))
 231                 return false;
 232             var thisEnum = GetEnumerator();
 233             var otherEnum = other.GetEnumerator();
 234             //Skipt the first item, it is the current node itself
 235             thisEnum.MoveNext();
 236             otherEnum.MoveNext();
 237             while (true)
 238             {
 239                 var thisMove = thisEnum.MoveNext();
 240                 var otherMove = otherEnum.MoveNext();
 241
 242                 if (thisMove ^ otherMove)
 243                     return false;
 244                 if (!thisMove)
 245                     return true;
 246
 247                 if (!thisEnum.Current.Equals(otherEnum.Current))
 248                     return false;
 249             }
 250         }
 251     }
 252 }