src/cx/fbn/nevernote/filters/NoteSortFilterProxyModel.java

   1 /*\r
   2  * This file is part of NeverNote \r
   3  * Copyright 2009 Randy Baumgarte\r
   4  * \r
   5  * This file may be licensed under the terms of of the\r
   6  * GNU General Public License Version 2 (the ``GPL'').\r
   7  *\r
   8  * Software distributed under the License is distributed\r
   9  * on an ``AS IS'' basis, WITHOUT WARRANTY OF ANY KIND, either\r
  10  * express or implied. See the GPL for the specific language\r
  11  * governing rights and limitations.\r
  12  *\r
  13  * You should have received a copy of the GPL along with this\r
  14  * program. If not, go to http://www.gnu.org/licenses/gpl.html\r
  15  * or write to the Free Software Foundation, Inc.,\r
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.\r
  17  *\r
  18 */\r
  19 \r
  20 package cx.fbn.nevernote.filters;\r
  21 \r
  22 import java.util.HashMap;\r
  23 import java.util.Map;\r
  24 \r
  25 import com.trolltech.qt.core.QAbstractItemModel;\r
  26 import com.trolltech.qt.core.QModelIndex;\r
  27 import com.trolltech.qt.core.QObject;\r
  28 import com.trolltech.qt.gui.QSortFilterProxyModel;\r
  29 \r
  30 import cx.fbn.nevernote.Global;\r
  31 \r
  32 public class NoteSortFilterProxyModel extends QSortFilterProxyModel {\r
  33         private final Map<String,String> guids;\r
  34         \r
  35         public NoteSortFilterProxyModel(QObject parent) {\r
  36                 super(parent);\r
  37                 guids = new HashMap<String,String>();\r
  38                 setDynamicSortFilter(true);\r
  39         }\r
  40         public void clear() {\r
  41                 guids.clear();\r
  42         }\r
  43         public void addGuid(String guid) {\r
  44 //              if (!guids.containsKey(guid))\r
  45                         guids.put(guid, null);\r
  46         }\r
  47         public void filter() {\r
  48                 invalidateFilter();\r
  49         }\r
  50         @Override\r
  51         protected boolean filterAcceptsRow(int sourceRow, QModelIndex sourceParent) {\r
  52                 if (guids.size() == 0)\r
  53                         return false;\r
  54                 QAbstractItemModel model = sourceModel();\r
  55                 QModelIndex guidIndex = sourceModel().index(sourceRow, Global.noteTableGuidPosition);\r
  56                 String guid = (String)model.data(guidIndex);\r
  57                 \r
  58                 if (guids.containsKey(guid))\r
  59                         return true;\r
  60                 else\r
  61                         return false;\r
  62         }\r
  63         \r
  64         @Override\r
  65         protected boolean lessThan(QModelIndex left, QModelIndex right) {\r
  66                 \r
  67                 Object leftData = sourceModel().data(left);\r
  68                 Object rightData = sourceModel().data(right);\r
  69                 \r
  70                 if (leftData instanceof Long && rightData instanceof Long) {\r
  71                         Long leftLong = (Long)leftData;\r
  72                         Long rightLong = (Long)rightData;\r
  73                         return leftLong.compareTo(rightLong) < 0;\r
  74                 }\r
  75                 if (leftData instanceof String && rightData instanceof String) {\r
  76                         String leftString = (String)leftData;\r
  77                         String rightString = (String)rightData;\r
  78                         return leftString.compareTo(rightString) < 0;\r
  79                 }\r
  80                 \r
  81                 return super.lessThan(left, right);\r
  82         }\r
  83 }