code.grnet.gr Git - pithos-ms-client/blob - trunk/Pithos.Client.WPF/SelectiveSynch/SelectiveSynchViewModel.cs

   1 #region
   2 /* -----------------------------------------------------------------------
   3  * <copyright file="SelectiveSynchViewModel.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.Generic;
  44 using System.Collections.ObjectModel;
  45 using System.Linq;
  46 using System.Threading.Tasks;
  47 using Caliburn.Micro;
  48 using Pithos.Client.WPF.Properties;
  49 using Pithos.Client.WPF.Utils;
  50 using Pithos.Core;
  51 using Pithos.Interfaces;
  52
  53 namespace Pithos.Client.WPF.SelectiveSynch
  54 {
  55     class SelectiveSynchViewModel:Screen
  56     {
  57         private const string DirectoryType = "application/directory";
  58         private readonly IEventAggregator _events ;
  59
  60
  61         public AccountSettings Account { get; set; }
  62
  63         private readonly ObservableCollection<DirectoryRecord> _rootNodes=new ObservableCollection<DirectoryRecord>();
  64         public ObservableCollection<DirectoryRecord> RootNodes
  65         {
  66             get { return _rootNodes; }
  67         }
  68
  69         private ObservableCollection<ObjectInfo> _checks;
  70         private readonly PithosMonitor _monitor;
  71         private bool _isBusy=true;
  72
  73         public ObservableCollection<ObjectInfo> Checks
  74         {
  75             get { return _checks; }
  76         }
  77
  78         public void GetChecks()
  79         {
  80             var root = RootNodes[0];
  81             _checks = new ObservableCollection<ObjectInfo>(
  82                 from DirectoryRecord record in root
  83                 where record.IsChecked==true
  84                 select record.ObjectInfo);
  85             NotifyOfPropertyChange(() => Checks);
  86         }
  87
  88         public SelectiveSynchViewModel(PithosMonitor monitor, IEventAggregator events, AccountSettings account)
  89         {
  90             Account = account;
  91             AccountName = account.AccountName;
  92             DisplayName = String.Format("Selective folder synchronization for {0}",account.AccountName);
  93             _monitor = monitor;
  94             _events = events;
  95             TaskEx.Run(LoadRootNode);
  96         }
  97
  98         private void LoadRootNode()
  99         {
 100             var client = _monitor.CloudClient;
 101
 102             var dirs = from container in client.ListContainers(_monitor.UserName)
 103                        select new DirectoryRecord
 104                                   {
 105                                       DisplayName = container.Name,
 106                                       Uri=new Uri(client.StorageUrl,String.Format(@"{0}/{1}",Account.AccountName, container.Name)),
 107                                       Directories = (from dir in client.ListObjects(_monitor.UserName, container.Name)
 108                                                      where dir.Content_Type == DirectoryType
 109                                                      select dir).ToTree()
 110                                   };
 111             var ownFolders = dirs.ToList();
 112
 113             var accountNodes=from account in client.ListSharingAccounts()
 114                              select new DirectoryRecord
 115                              {
 116                                 DisplayName=account.name,
 117                                 Uri=new Uri(client.StorageUrl,"../"+ account.name),
 118                                 Directories=(from container in client.ListContainers(account.name)
 119                                             select new DirectoryRecord
 120                                                         {
 121                                                             DisplayName=container.Name,
 122                                                             Uri = new Uri(client.StorageUrl, "../" + account.name + "/" + container.Name),
 123                                                             Directories=(from folder in client.ListObjects(account.name,container.Name)
 124                                                                         where folder.Content_Type==DirectoryType
 125                                                                         select folder).ToTree()
 126                                                         }).ToList()
 127                              };
 128
 129             var othersNode = new DirectoryRecord
 130                                  {
 131                                      DisplayName = "Others",
 132                                      Directories=accountNodes.ToList()
 133                                  };
 134
 135
 136             var rootItem = new DirectoryRecord
 137                                {
 138                                    DisplayName = AccountName ,
 139                                    Directories = ownFolders.ToList()
 140                                };
 141
 142             Execute.OnUIThread(() =>
 143                                    {
 144                                        RootNodes.Add(rootItem);
 145                                        RootNodes.Add(othersNode);
 146                                    });
 147
 148             SetInitialSelections(Account);
 149
 150             IsBusy = false;
 151         }
 152
 153         public bool IsBusy
 154         {
 155             get {
 156                 return _isBusy;
 157             }
 158             set {
 159                 _isBusy = value;
 160                 NotifyOfPropertyChange(()=>IsBusy);
 161             }
 162         }
 163
 164         private void SetInitialSelections(AccountSettings account)
 165         {
 166             var selections = account.SelectiveFolders;
 167
 168             if (selections.Count == 0)
 169                 return;
 170             //Initially, all nodes are checked
 171             //We need to *uncheck* the nodes that are not selected
 172
 173             var selects = from DirectoryRecord rootRecord in RootNodes
 174                           from DirectoryRecord record in rootRecord
 175                           where record.Uri !=null &&  !selections.Contains(record.Uri.ToString())
 176                           select record;
 177
 178             selects.Apply(record=>record.IsChecked=false);
 179         }
 180
 181         protected string AccountName { get; set; }
 182
 183         public void SaveChanges()
 184         {
 185             var uris = (from DirectoryRecord root in RootNodes
 186                         from DirectoryRecord record in root
 187                         where record.IsChecked == true && record.Uri != null
 188                         select record.Uri).ToArray();
 189
 190             SaveSettings(uris);
 191
 192             //RootNodes is an ObservableCollection, it can't be enumerated iterativelly
 193
 194             var added = (from DirectoryRecord root in RootNodes
 195                          from DirectoryRecord record in root
 196                          where record.Added && record.Uri != null
 197                          select record.Uri).ToArray();
 198             var removed = (from DirectoryRecord root in RootNodes
 199                            from DirectoryRecord record in root
 200                           where record.Removed && record.Uri != null
 201                          select record.Uri).ToArray();
 202             //TODO: Include Uris for the containers as well
 203             _events.Publish(new SelectiveSynchChanges{Account=Account,Uris=uris,Added=added,Removed=removed});
 204
 205
 206
 207
 208             TryClose(true);
 209         }
 210
 211
 212         private void SaveSettings(IEnumerable<Uri> uris)
 213         {
 214             var selections = uris.Select(uri => uri.ToString()).ToArray();
 215
 216             Account.SelectiveFolders.Clear();
 217             Account.SelectiveFolders.AddRange(selections);
 218             Settings.Default.Save();
 219         }
 220
 221         public void RejectChanges()
 222         {
 223             TryClose(false);
 224         }
 225     }
 226 }