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

   1 package org.simantics.jfreechart.chart.properties;\r
   2 \r
   3 import org.eclipse.jface.viewers.ISelection;\r
   4 import org.eclipse.swt.widgets.Text;\r
   5 import org.simantics.browsing.ui.swt.widgets.impl.Widget;\r
   6 import org.simantics.db.WriteGraph;\r
   7 import org.simantics.db.common.request.WriteRequest;\r
   8 import org.simantics.db.exception.DatabaseException;\r
   9 import org.simantics.db.management.ISessionContext;\r
  10 import org.simantics.utils.ReflectionUtils;\r
  11 import org.simantics.utils.ui.ISelectionUtils;\r
  12 \r
  13 public abstract class StringChooserModifyListenerImpl<T,T2> implements StringChooserModifyListener<T2>, Widget {\r
  14         protected ISessionContext context;\r
  15         protected T lastInput = null;\r
  16 \r
  17         protected final Class<?> clazz;\r
  18 \r
  19         public StringChooserModifyListenerImpl() {\r
  20                 clazz = ReflectionUtils.getSingleParameterType(getClass());\r
  21         }\r
  22 \r
  23         private Object getInputContents(Object input, Class<?> inputClass) {\r
  24                 if (inputClass.isInstance(input))\r
  25                         return input;\r
  26                 if (input instanceof ISelection)\r
  27                         return ISelectionUtils.filterSingleSelection(input, inputClass);\r
  28                 return null;\r
  29         }\r
  30 \r
  31         @Override\r
  32         public void modifySelection(StringChooserModifyEvent<T2> e) {\r
  33 \r
  34                 Text text = (Text)e.getWidget();\r
  35                 final T2 object = e.getObject();\r
  36                 final String textValue = text.getText();\r
  37                 final T input = lastInput;\r
  38 \r
  39                 try {\r
  40                         context.getSession().syncRequest(new WriteRequest() {\r
  41 \r
  42                                 @SuppressWarnings("unchecked")\r
  43                                 @Override\r
  44                                 public void perform(WriteGraph graph) throws DatabaseException {\r
  45                                         \r
  46                                         if(clazz.isInstance(input)) {\r
  47                                                 applyObject(graph, (T)input, object, textValue);\r
  48                                         } else {\r
  49                                                 T single = (T)getInputContents(input, clazz);\r
  50                                                 if(single != null)\r
  51                                                         applyObject(graph, single, object, textValue);\r
  52                                         }\r
  53 \r
  54                                         \r
  55                                 }\r
  56                                 \r
  57                         });\r
  58                 } catch (DatabaseException e1) {\r
  59                         e1.printStackTrace();\r
  60                 }\r
  61         }\r
  62 \r
  63         @Override\r
  64         public void setInput(ISessionContext context, Object parameter) {\r
  65                 this.context = context;\r
  66                 lastInput = (T)parameter;\r
  67         }\r
  68 \r
  69         abstract public void applyObject(WriteGraph graph, T input, T2 object, String text) throws DatabaseException;\r
  70 \r
  71 }\r