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

   1 package org.simantics.views.swt.client.impl;
   2
   3 import java.util.List;
   4
   5 import org.eclipse.swt.custom.CCombo;
   6 import org.eclipse.swt.events.SelectionEvent;
   7 import org.eclipse.swt.events.SelectionListener;
   8 import org.eclipse.swt.widgets.Composite;
   9 import org.simantics.scl.runtime.tuple.Tuple;
  10
  11
  12 public class SWTCCombo extends SWTComboBase<CCombo> {
  13
  14         private static final long serialVersionUID = 2529612234578912642L;
  15
  16         private final SelectionListener listener = new SelectionListener() {
  17
  18                 @Override
  19                 public void widgetSelected(SelectionEvent e) {
  20
  21                         int selectionIndex = control.getSelectionIndex();
  22                         if (selectionIndex == -1)
  23                             return;
  24
  25                         String[] items = control.getItems();
  26
  27                         String key = items[selectionIndex];
  28
  29                         if(modifier != null)
  30                                 modifier.apply(key);
  31
  32                         selected = key;
  33
  34                 }
  35
  36                 @Override
  37                 public void widgetDefaultSelected(SelectionEvent e) {
  38
  39                         widgetSelected(e);
  40
  41                 }
  42
  43         };
  44
  45         @Override
  46         public void createControls(Composite parent) {
  47
  48                 control = new CCombo(parent, style);
  49                 control.addSelectionListener(listener);
  50
  51                 setProperties();
  52
  53         }
  54
  55         public void synchronizeAvailable(List<Tuple> available) {
  56                 if(available != null) {
  57
  58                 control.removeSelectionListener(listener);
  59                 control.setData(available);
  60                 control.clearSelection();
  61                 try {
  62                         control.removeAll();
  63                 } catch (Throwable t) {
  64                     t.printStackTrace();
  65                 }
  66                 if (available != null) {
  67                     int index = 0;
  68                     for(Tuple key : available) {
  69                         control.add((String)key.toArray()[0]);
  70                         control.setData((String)key.toArray()[0], index++);
  71                     }
  72                     String selectionKey = (String)control.getData("_SelectionKey");
  73                     if(selectionKey != null) {
  74                         Integer selectionIndex = (Integer)control.getData(selectionKey);
  75                         if(selectionIndex != null) control.select(selectionIndex);
  76                     }
  77                 }
  78                 control.addSelectionListener(listener);
  79
  80 //                      // This seems to be necessary for correct size computations
  81 //                      widget.getControl().getParent().layout(true);
  82                 }
  83         }
  84
  85         public void synchronizeSelected(String selected) {
  86                 if(selected != null) {
  87
  88             control.removeSelectionListener(listener);
  89                 control.setData("_SelectionKey", selected);
  90                 Integer selectionIndex = (Integer)control.getData(selected);
  91                 if(selectionIndex != null) control.select(selectionIndex);
  92             control.addSelectionListener(listener);
  93
  94 //                      // This seems to be necessary for correct size computations
  95 //                      widget.getControl().getParent().layout(true);
  96                 }
  97         }
  98
  99         public String readSelected() {
 100                 return selected;
 101         }
 102
 103         public List<Tuple> readAvailable() {
 104                 return available;
 105         }
 106
 107 }