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

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