bundles/org.simantics.views.swt.client/src/org/simantics/views/swt/client/impl/SWTCombo.java

   1 package org.simantics.views.swt.client.impl;\r
   2 \r
   3 import java.util.List;\r
   4 \r
   5 import org.eclipse.swt.events.ModifyEvent;\r
   6 import org.eclipse.swt.events.ModifyListener;\r
   7 import org.eclipse.swt.widgets.Combo;\r
   8 import org.eclipse.swt.widgets.Composite;\r
   9 import org.simantics.scl.runtime.tuple.Tuple;\r
  10 \r
  11 public class SWTCombo extends SWTComboBase<Combo> {\r
  12         \r
  13         private static final long serialVersionUID = 3355806440902480450L;\r
  14 \r
  15         private final ModifyListener listener = new ModifyListener() {\r
  16 \r
  17                 @Override\r
  18                 public void modifyText(ModifyEvent e) {\r
  19                         \r
  20                         int selectionIndex = control.getSelectionIndex();\r
  21                         if (selectionIndex == -1)\r
  22                             return;\r
  23 \r
  24                         String[] items = control.getItems();\r
  25                         \r
  26                         String key = items[selectionIndex];\r
  27                         \r
  28                         if(modifier != null)\r
  29                                 modifier.apply(key);\r
  30                         \r
  31                         selected = key;\r
  32                         \r
  33                 }\r
  34                 \r
  35         };\r
  36         \r
  37         @Override\r
  38         public void createControls(Composite parent) {\r
  39                 \r
  40                 control = new Combo(parent, style);\r
  41                 // Must initially add modifylistener before invoking setProperties\r
  42                 // since setProperties will invoke synchronize*-methods, which do\r
  43                 // removeModifyListener + addModifyListener. Otherwise modify listener\r
  44                 // would get added twice to the control.\r
  45                 control.addModifyListener(listener);\r
  46                 \r
  47                 setProperties();\r
  48                 \r
  49         }\r
  50         \r
  51         public void synchronizeAvailable(List<Tuple> available) {\r
  52                 \r
  53                 if(available != null) {\r
  54                         \r
  55                 control.removeModifyListener(listener);\r
  56                 control.setData(available);\r
  57                 control.clearSelection();\r
  58                 try {\r
  59                         control.removeAll();\r
  60                 } catch (Throwable t) {\r
  61                     t.printStackTrace();\r
  62                 }\r
  63                 if (available != null) {\r
  64                     int index = 0;\r
  65                     for(Tuple key : available) {\r
  66                         control.add((String)key.get(0));\r
  67                         control.setData((String)key.get(0), index++);\r
  68                     }\r
  69                     String selectionKey = (String)control.getData("_SelectionKey");\r
  70                     if(selectionKey != null) {\r
  71                         Integer selectionIndex = (Integer)control.getData(selectionKey);\r
  72                         if(selectionIndex != null) control.select(selectionIndex);\r
  73                     }\r
  74                 }\r
  75                 control.addModifyListener(listener);\r
  76                         \r
  77 //                      // This seems to be necessary for correct size computations\r
  78 //                      widget.getControl().getParent().layout(true);\r
  79                 }\r
  80         }\r
  81 \r
  82         public void synchronizeSelected(String selected) {\r
  83                 \r
  84                 if(selected != null) {\r
  85                         \r
  86                 control.removeModifyListener(listener);\r
  87                 control.setData("_SelectionKey", selected);\r
  88                 Integer selectionIndex = (Integer)control.getData(selected);\r
  89                 if(selectionIndex != null) control.select(selectionIndex);\r
  90                 control.addModifyListener(listener);\r
  91                                 \r
  92                 }\r
  93                 \r
  94         }\r
  95         \r
  96 }\r