gerrit.simantics Code Review - simantics/sysdyn.git/blob

   1 package org.simantics.sysdyn.ui.properties.widgets.factories;\r
   2 \r
   3 import org.eclipse.jface.dialogs.IInputValidator;\r
   4 import org.eclipse.jface.viewers.ISelection;\r
   5 import org.simantics.browsing.ui.swt.widgets.impl.Widget;\r
   6 import org.simantics.browsing.ui.swt.widgets.impl.WidgetSupport;\r
   7 import org.simantics.db.ReadGraph;\r
   8 import org.simantics.db.Resource;\r
   9 import org.simantics.db.exception.DatabaseException;\r
  10 import org.simantics.db.management.ISessionContext;\r
  11 import org.simantics.db.request.Read;\r
  12 import org.simantics.sysdyn.ui.properties.VariableNameUtils;\r
  13 import org.simantics.ui.SimanticsUI;\r
  14 import org.simantics.utils.ui.ISelectionUtils;\r
  15 \r
  16 public class VariableNameValidator implements IInputValidator, Widget {\r
  17 \r
  18         private Resource lastInput = null;\r
  19         \r
  20         public VariableNameValidator(WidgetSupport support) {\r
  21                 support.register(this);\r
  22         }\r
  23         \r
  24         /**\r
  25          * Checks that the syntax of the given name is valid and there \r
  26          * are no other components that have the same name in the configuration.\r
  27          */\r
  28         @Override\r
  29         public String isValid(final String newText) {\r
  30         if (!VariableNameUtils.isValid(newText))\r
  31             return "Sorry but spaces and special characters are not allowed for names right now";\r
  32         if(lastInput == null) return null;\r
  33         String result = null;\r
  34         try {\r
  35                         result = SimanticsUI.getSession().syncRequest(new Read<String>(){\r
  36 \r
  37                                 @Override\r
  38                                 public String perform(ReadGraph graph) throws DatabaseException {\r
  39                                         if(VariableNameUtils.nameIsTaken(graph, lastInput, newText)) {\r
  40                                                 return "Name is taken.";\r
  41                                         }\r
  42                                         return null;\r
  43                                 }\r
  44                                 \r
  45                         }) ;\r
  46                 } catch (DatabaseException e) {\r
  47                         e.printStackTrace();\r
  48                 }\r
  49         return result;\r
  50 \r
  51         }\r
  52 \r
  53         @Override\r
  54         public void setInput(ISessionContext context, Object input) {\r
  55                 lastInput = ISelectionUtils.filterSingleSelection((ISelection)input, Resource.class);\r
  56         }\r
  57 \r
  58 }\r