src/Tizen.Pims.Calendar/Tizen.Pims.Calendar/CalendarList.cs

   1 /*
   2  * Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the License);
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an AS IS BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 using System;
  18
  19 namespace Tizen.Pims.Calendar
  20 {
  21     /// <summary>
  22     /// A list of records with the same type.
  23     /// </summary>
  24     /// <since_tizen> 4 </since_tizen>
  25     public class CalendarList:IDisposable
  26     {
  27         private Int64 _memoryPressure = 20;
  28         internal int _count = -1;
  29         internal IntPtr _listHandle;
  30
  31         internal CalendarList(IntPtr handle)
  32         {
  33             _listHandle = handle;
  34
  35             int error = Interop.List.First(_listHandle);
  36             if (CalendarError.None != (CalendarError)error)
  37             {
  38                 Log.Error(Globals.LogTag, "MoveFirst Failed with error " + error);
  39                 throw CalendarErrorFactory.GetException(error);
  40             }
  41
  42             _memoryPressure += this.Count * CalendarViews.Record.AverageSize;
  43             GC.AddMemoryPressure(_memoryPressure);
  44         }
  45
  46         /// <summary>
  47         /// Creates a calendar list.
  48         /// </summary>
  49         /// <since_tizen> 4 </since_tizen>
  50         /// <feature>http://tizen.org/feature/calendar</feature>
  51         /// <exception cref="NotSupportedException">Thrown when the feature is not supported.</exception>
  52         /// <exception cref="OutOfMemoryException">Thrown when failed due to out of memory.</exception>
  53         public CalendarList()
  54         {
  55             int error = Interop.List.Create(out _listHandle);
  56             if (CalendarError.None != (CalendarError)error)
  57             {
  58                 Log.Error(Globals.LogTag, "CalendarList Failed with error " + error);
  59                 throw CalendarErrorFactory.GetException(error);
  60             }
  61             GC.AddMemoryPressure(_memoryPressure);
  62         }
  63
  64         /// <summary>
  65         /// The count of the calendar entity.
  66         /// </summary>
  67         /// <since_tizen> 4 </since_tizen>
  68         /// <value>The count of the calendar entity.</value>
  69         public int Count
  70         {
  71             get
  72             {
  73                 if (_count == -1)
  74                 {
  75                     int count = -1;
  76                     int error = Interop.List.GetCount(_listHandle, out count);
  77                     if (CalendarError.None != (CalendarError)error)
  78                     {
  79                         Log.Error(Globals.LogTag, "GetCount Failed with error " + error);
  80                     }
  81                     _count = count;
  82                 }
  83                 return _count;
  84             }
  85         }
  86
  87         /// <summary>
  88         /// Destroys the CalendarList resource.
  89         /// </summary>
  90         ~CalendarList()
  91         {
  92             Dispose(false);
  93         }
  94
  95 #region IDisposable Support
  96         private bool disposedValue = false; // To detect redundant calls
  97
  98         /// <summary>
  99         /// Disposes off the resources (other than memory) used by the CalendarList.
 100         /// </summary>
 101         /// <param name="disposing">true to release both managed and unmanaged resources, false to release only unmanaged resources.</param>
 102         /// <since_tizen> 4 </since_tizen>
 103         protected virtual void Dispose(bool disposing)
 104         {
 105             if (!disposedValue)
 106             {
 107                 Log.Debug(Globals.LogTag, "Dispose :" + disposing);
 108
 109                 int error = Interop.List.Destroy(_listHandle, true);
 110                 if (CalendarError.None != (CalendarError)error)
 111                 {
 112                     Log.Error(Globals.LogTag, "Destroy Failed with error " + error);
 113                 }
 114                 disposedValue = true;
 115                 GC.RemoveMemoryPressure(_memoryPressure);
 116             }
 117         }
 118
 119         /// <summary>
 120         /// Releases all resources used by the CalendarList.
 121         /// It should be called after it has finished using the object.
 122         /// </summary>
 123         /// <since_tizen> 4 </since_tizen>
 124         public void Dispose()
 125         {
 126             Dispose(true);
 127             GC.SuppressFinalize(this);
 128         }
 129 #endregion
 130
 131         /// <summary>
 132         /// Adds a record to the calendar list.
 133         /// </summary>
 134         /// <since_tizen> 4 </since_tizen>
 135         /// <param name="record">The record to be added.</param>
 136         /// <feature>http://tizen.org/feature/calendar</feature>
 137         /// <exception cref="NotSupportedException">Thrown when the feature is not supported.</exception>
 138         public void AddRecord(CalendarRecord record)
 139         {
 140             int error = Interop.List.Add(_listHandle, record._recordHandle);
 141             if (CalendarError.None != (CalendarError)error)
 142             {
 143                 Log.Error(Globals.LogTag, "AddRecord Failed with error " + error);
 144                 throw CalendarErrorFactory.GetException(error);
 145             }
 146             record._disposedValue = true;
 147             _count = -1;
 148             _memoryPressure += CalendarViews.Record.AverageSize;
 149         }
 150
 151         /// <summary>
 152         /// Removes a record from the calendar list.
 153         /// </summary>
 154         /// <since_tizen> 4 </since_tizen>
 155         /// <param name="record">The record to be removed.</param>
 156         /// <feature>http://tizen.org/feature/calendar</feature>
 157         /// <exception cref="NotSupportedException">Thrown when the feature is not supported.</exception>
 158         public void RemoveRecord(CalendarRecord record)
 159         {
 160             int error = Interop.List.Remove(_listHandle, record._recordHandle);
 161             if (CalendarError.None != (CalendarError)error)
 162             {
 163                 Log.Error(Globals.LogTag, "RemoveRecord Failed with error " + error);
 164                 throw CalendarErrorFactory.GetException(error);
 165             }
 166             record._disposedValue = false;
 167             _count = -1;
 168             _memoryPressure -= CalendarViews.Record.AverageSize;
 169         }
 170
 171         /// <summary>
 172         /// Retrieves a record from the calendar list.
 173         /// </summary>
 174         /// <since_tizen> 4 </since_tizen>
 175         /// <returns>
 176         /// The calendar record.
 177         /// </returns>
 178         /// <feature>http://tizen.org/feature/calendar</feature>
 179         /// <exception cref="NotSupportedException">Thrown when the feature is not supported.</exception>
 180         public CalendarRecord GetCurrentRecord()
 181         {
 182             IntPtr handle;
 183             int error = Interop.List.GetCurrentRecordP(_listHandle, out handle);
 184             if (CalendarError.None != (CalendarError)error)
 185             {
 186                 Log.Error(Globals.LogTag, "GetCurrentRecord Failed with error " + error);
 187                 throw CalendarErrorFactory.GetException(error);
 188             }
 189             return new CalendarRecord(handle, true);
 190         }
 191
 192         /// <summary>
 193         /// Moves a calendar list to the previous position.
 194         /// </summary>
 195         /// <since_tizen> 4 </since_tizen>
 196         /// <returns>
 197         /// If the cursor is moved to the end, it returns false.
 198         /// </returns>
 199         /// <feature>http://tizen.org/feature/calendar</feature>
 200         /// <exception cref="NotSupportedException">Thrown when the feature is not supported.</exception>
 201         public bool MovePrevious()
 202         {
 203             int error = Interop.List.Prev(_listHandle);
 204             if (CalendarError.None == (CalendarError)error)
 205             {
 206                 return true;
 207             }
 208             else if (this.Count > 0 && CalendarError.NoData == (CalendarError)error)
 209             {
 210                 Log.Debug(Globals.LogTag, "Nodata MovePrevious " + error);
 211                 return false;
 212             }
 213             else
 214             {
 215                 Log.Error(Globals.LogTag, "MovePrevious Failed with error " + error);
 216                 throw CalendarErrorFactory.GetException(error);
 217             }
 218         }
 219
 220         /// <summary>
 221         /// Moves a calendar list to the next position.
 222         /// </summary>
 223         /// <since_tizen> 4 </since_tizen>
 224         /// <returns>
 225         /// If the cursor is moved to the end, it returns false.
 226         /// </returns>
 227         /// <feature>http://tizen.org/feature/calendar</feature>
 228         /// <exception cref="NotSupportedException">Thrown when the feature is not supported.</exception>
 229         public bool MoveNext()
 230         {
 231             int error = Interop.List.Next(_listHandle);
 232             if (CalendarError.None == (CalendarError)error)
 233             {
 234                 return true;
 235             }
 236             else if (this.Count > 0 && CalendarError.NoData == (CalendarError)error)
 237             {
 238                 Log.Debug(Globals.LogTag, "Nodata MoveNext" + error);
 239                 return false;
 240             }
 241             else
 242             {
 243                 Log.Error(Globals.LogTag, "MoveNext Failed with error " + error);
 244                 throw CalendarErrorFactory.GetException(error);
 245             }
 246         }
 247
 248         /// <summary>
 249         /// Moves a calendar list to the first position.
 250         /// </summary>
 251         /// <since_tizen> 4 </since_tizen>
 252         /// <feature>http://tizen.org/feature/calendar</feature>
 253         /// <exception cref="NotSupportedException">Thrown when the feature is not supported.</exception>
 254         public void MoveFirst()
 255         {
 256             int error = Interop.List.First(_listHandle);
 257             if (CalendarError.None != (CalendarError)error)
 258             {
 259                 Log.Error(Globals.LogTag, "MoveFirst Failed with error " + error);
 260                 throw CalendarErrorFactory.GetException(error);
 261             }
 262         }
 263
 264         /// <summary>
 265         /// Moves a calendar list to the last position.
 266         /// </summary>
 267         /// <since_tizen> 4 </since_tizen>
 268         /// <feature>http://tizen.org/feature/calendar</feature>
 269         /// <exception cref="NotSupportedException">Thrown when the feature is not supported.</exception>
 270         public void MoveLast()
 271         {
 272             int error = Interop.List.Last(_listHandle);
 273             if (CalendarError.None != (CalendarError)error)
 274             {
 275                 Log.Error(Globals.LogTag, "MoveLast Failed with error " + error);
 276                 throw CalendarErrorFactory.GetException(error);
 277             }
 278         }
 279
 280     }
 281 }