bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/ModelledCombo.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2012 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.browsing.ui.swt;
  13
  14 import java.util.List;
  15
  16 import org.eclipse.swt.SWT;
  17 import org.eclipse.swt.events.ModifyListener;
  18 import org.eclipse.swt.layout.GridData;
  19 import org.eclipse.swt.widgets.Composite;
  20 import org.eclipse.swt.widgets.Control;
  21 import org.eclipse.ui.IWorkbenchSite;
  22 import org.simantics.Simantics;
  23 import org.simantics.browsing.ui.swt.stubs.BrowsingResource;
  24 import org.simantics.browsing.ui.swt.widgets.Combo;
  25 import org.simantics.browsing.ui.swt.widgets.impl.ReadFactory;
  26 import org.simantics.browsing.ui.swt.widgets.impl.WidgetSupport;
  27 import org.simantics.databoard.Bindings;
  28 import org.simantics.db.ReadGraph;
  29 import org.simantics.db.Resource;
  30 import org.simantics.db.exception.DatabaseException;
  31 import org.simantics.db.management.ISessionContext;
  32 import org.simantics.db.request.Read;
  33 import org.simantics.utils.datastructures.Pair;
  34
  35 /**
  36  * @author Antti Villberg
  37  */
  38 public class ModelledCombo implements ModelledControl {
  39
  40     final private Resource configuration;
  41
  42     public ModelledCombo(Resource configuration) {
  43         this.configuration = configuration;
  44     }
  45
  46     @Override
  47     public Control create(Composite parent, IWorkbenchSite site, ISessionContext context, WidgetSupport support) throws DatabaseException {
  48
  49         Combo combo = new Combo(parent, support, SWT.READ_ONLY);
  50
  51         GridData gridData = Simantics.getSession().syncRequest(new Read<GridData>() {
  52
  53             @Override
  54             public GridData perform(ReadGraph graph) throws DatabaseException {
  55                 BrowsingResource br = BrowsingResource.getInstance(graph);
  56                 GridData data = new GridData(SWT.FILL, SWT.FILL, true, false);
  57                 Integer span = graph.getPossibleRelatedValue(configuration, br.Control_HorizontalSpan, Bindings.INTEGER);
  58                 if(span != null) data.horizontalSpan = span;
  59                 Boolean grabExcessHorizontalSpace = graph.getPossibleRelatedValue(configuration, br.Control_HorizontalGrab, Bindings.BOOLEAN);
  60                 if(grabExcessHorizontalSpace != null) data.grabExcessHorizontalSpace = grabExcessHorizontalSpace;
  61                 return data;
  62             }
  63
  64         });
  65
  66         combo.setLayoutData(gridData);
  67
  68         ReadFactory<?, List<Pair<String, Object>>> available = Simantics.getSession().syncRequest(new Read<ReadFactory<?, List<Pair<String, Object>>>>() {
  69
  70             @SuppressWarnings("unchecked")
  71             @Override
  72             public ReadFactory<?, List<Pair<String, Object>>> perform(ReadGraph graph) throws DatabaseException {
  73                 BrowsingResource br = BrowsingResource.getInstance(graph);
  74                 Resource factory = graph.getPossibleObject(configuration, br.Combo_AvailableItems);
  75                 return graph.adapt(factory, ReadFactory.class);
  76             }
  77
  78         });
  79
  80         //System.err.println("ModelledCombo: items = " + available);
  81
  82         combo.setItemFactory2(available);
  83
  84         ReadFactory<?, String> selected = Simantics.getSession().syncRequest(new Read<ReadFactory<?, String>>() {
  85
  86             @SuppressWarnings("unchecked")
  87             @Override
  88             public ReadFactory<?, String> perform(ReadGraph graph) throws DatabaseException {
  89                 BrowsingResource br = BrowsingResource.getInstance(graph);
  90                 Resource factory = graph.getPossibleObject(configuration, br.Combo_SelectedItem);
  91                 return graph.adapt(factory, ReadFactory.class);
  92             }
  93
  94         });
  95
  96         combo.setSelectionFactory(selected);
  97
  98         ModifyListener modifier = Simantics.getSession().syncRequest(new Read<ModifyListener>() {
  99
 100             @Override
 101             public ModifyListener perform(ReadGraph graph) throws DatabaseException {
 102                 BrowsingResource br = BrowsingResource.getInstance(graph);
 103                 Resource factory = graph.getPossibleObject(configuration, br.Combo_Modifier);
 104                 return graph.adapt(factory, ModifyListener.class);
 105             }
 106
 107         });
 108
 109         combo.addModifyListener(modifier);
 110
 111         return combo.getWidget();
 112     }
 113
 114 }