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

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2011 Association for Decentralized Information Management in\r
   3  * 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.sysdyn.ui.properties;\r
  13 \r
  14 import java.util.Collection;\r
  15 import java.util.Collections;\r
  16 import java.util.HashMap;\r
  17 import java.util.Map;\r
  18 \r
  19 import org.eclipse.core.runtime.IAdaptable;\r
  20 import org.eclipse.jface.layout.GridDataFactory;\r
  21 import org.eclipse.jface.layout.GridLayoutFactory;\r
  22 import org.eclipse.jface.resource.JFaceResources;\r
  23 import org.eclipse.jface.resource.LocalResourceManager;\r
  24 import org.eclipse.jface.viewers.ISelectionProvider;\r
  25 import org.eclipse.jface.viewers.IStructuredSelection;\r
  26 import org.eclipse.jface.viewers.StructuredSelection;\r
  27 import org.eclipse.swt.SWT;\r
  28 import org.eclipse.swt.custom.ScrolledComposite;\r
  29 import org.eclipse.swt.events.DisposeEvent;\r
  30 import org.eclipse.swt.events.DisposeListener;\r
  31 import org.eclipse.swt.events.SelectionAdapter;\r
  32 import org.eclipse.swt.events.SelectionEvent;\r
  33 import org.eclipse.swt.graphics.Point;\r
  34 import org.eclipse.swt.widgets.Composite;\r
  35 import org.eclipse.swt.widgets.Event;\r
  36 import org.eclipse.swt.widgets.Group;\r
  37 import org.eclipse.swt.widgets.Label;\r
  38 import org.eclipse.swt.widgets.Listener;\r
  39 import org.eclipse.swt.widgets.Tree;\r
  40 import org.eclipse.swt.widgets.TreeItem;\r
  41 import org.eclipse.ui.IWorkbenchSite;\r
  42 import org.simantics.browsing.ui.BuiltinKeys;\r
  43 import org.simantics.browsing.ui.Column;\r
  44 import org.simantics.browsing.ui.Column.Align;\r
  45 import org.simantics.browsing.ui.NodeContext;\r
  46 import org.simantics.browsing.ui.common.ColumnKeys;\r
  47 import org.simantics.browsing.ui.common.NodeContextBuilder.MapNodeContext;\r
  48 import org.simantics.browsing.ui.swt.SingleSelectionInputSource;\r
  49 import org.simantics.browsing.ui.swt.widgets.Button;\r
  50 import org.simantics.browsing.ui.swt.widgets.GraphExplorerComposite;\r
  51 import org.simantics.browsing.ui.swt.widgets.StringPropertyFactory;\r
  52 import org.simantics.browsing.ui.swt.widgets.StringPropertyModifier;\r
  53 import org.simantics.browsing.ui.swt.widgets.TrackedCombo;\r
  54 import org.simantics.browsing.ui.swt.widgets.TrackedText;\r
  55 import org.simantics.browsing.ui.swt.widgets.impl.ComboModifyListenerImpl;\r
  56 import org.simantics.browsing.ui.swt.widgets.impl.ReadFactoryImpl;\r
  57 import org.simantics.browsing.ui.swt.widgets.impl.SelectionListenerImpl;\r
  58 import org.simantics.browsing.ui.swt.widgets.impl.TextModifyListener;\r
  59 import org.simantics.browsing.ui.swt.widgets.impl.TrackedModifyEvent;\r
  60 import org.simantics.browsing.ui.swt.widgets.impl.Widget;\r
  61 import org.simantics.browsing.ui.swt.widgets.impl.WidgetSupport;\r
  62 import org.simantics.browsing.ui.swt.widgets.impl.WidgetSupportImpl;\r
  63 import org.simantics.db.ReadGraph;\r
  64 import org.simantics.db.Resource;\r
  65 import org.simantics.db.WriteGraph;\r
  66 import org.simantics.db.common.procedure.adapter.DisposableListener;\r
  67 import org.simantics.db.common.utils.ListUtils;\r
  68 import org.simantics.db.exception.DatabaseException;\r
  69 import org.simantics.db.management.ISessionContext;\r
  70 import org.simantics.db.request.Read;\r
  71 import org.simantics.jfreechart.chart.ChartUtils;\r
  72 import org.simantics.jfreechart.chart.properties.RangeComposite;\r
  73 import org.simantics.jfreechart.chart.properties.xyline.AxisAndVariablesExplorerComposite;\r
  74 import org.simantics.layer0.Layer0;\r
  75 import org.simantics.layer0.utils.direct.GraphUtils;\r
  76 import org.simantics.sysdyn.SysdynResource;\r
  77 import org.simantics.sysdyn.ui.properties.widgets.factories.IntegerPropertyFactory;\r
  78 import org.simantics.sysdyn.ui.properties.widgets.factories.IntegerPropertyModifier;\r
  79 import org.simantics.sysdyn.ui.properties.widgets.sensitivity.DistributionPropertyWidget;\r
  80 import org.simantics.sysdyn.ui.properties.widgets.sensitivity.ParameterChildRule;\r
  81 import org.simantics.sysdyn.ui.properties.widgets.sensitivity.VariableNameModifier;\r
  82 import org.simantics.sysdyn.ui.validation.ParameterExistsValidator;\r
  83 import org.simantics.ui.SimanticsUI;\r
  84 import org.simantics.utils.RunnableWithObject;\r
  85 import org.simantics.utils.datastructures.ArrayMap;\r
  86 import org.simantics.utils.ui.AdaptionUtils;\r
  87 import org.simantics.utils.ui.validators.IntegerValidator;\r
  88 \r
  89 /**\r
  90  * Tab for displaying sensitivity analysis experiment properties\r
  91  * \r
  92  * @author Tuomas Miettinen\r
  93  *\r
  94  */\r
  95 public class SensitivityAnalysisExperimentTab extends LabelPropertyTabContributor implements Widget {\r
  96 \r
  97     private GraphExplorerComposite explorer;\r
  98     private WidgetSupportImpl parameterSupport = new WidgetSupportImpl();\r
  99     private ScrolledComposite propertyContainer;\r
 100     private Composite parameterProperties;\r
 101     private Composite content;\r
 102     private Button remove;\r
 103     private Resource experiment;\r
 104     \r
 105     private boolean dirty = false;\r
 106     \r
 107     private DisposableListener<Collection<Resource>> contentListener;\r
 108 \r
 109     @Override\r
 110     public void createControls(Composite body, IWorkbenchSite site,\r
 111             final ISessionContext context, WidgetSupport support) {\r
 112         support.register(this);\r
 113 \r
 114         Composite composite = new RemoveFocusBeforeExperimentComposite(body, SWT.NONE);\r
 115         GridDataFactory.fillDefaults().grab(true, true).applyTo(composite);\r
 116         GridLayoutFactory.fillDefaults().margins(3, 3).applyTo(composite);\r
 117         \r
 118         // Scrolled composite for displaying properties of a selection in explorer\r
 119         propertyContainer = new ScrolledComposite(composite, SWT.H_SCROLL | SWT.V_SCROLL);\r
 120         GridDataFactory.fillDefaults().grab(true, true).applyTo(propertyContainer);\r
 121         GridLayoutFactory.fillDefaults().applyTo(propertyContainer);\r
 122         propertyContainer.setExpandHorizontal(true);\r
 123         propertyContainer.setExpandVertical(true);\r
 124         \r
 125         content = new Composite(propertyContainer, SWT.NONE);\r
 126         GridDataFactory.fillDefaults().grab(true, true).applyTo(content);\r
 127         GridLayoutFactory.fillDefaults().numColumns(2).applyTo(content);\r
 128 \r
 129         // Label\r
 130         Composite labelComposite = new Composite(content, SWT.NONE);\r
 131         GridDataFactory.fillDefaults().grab(true, false).span(2, 1).applyTo(labelComposite);\r
 132         GridLayoutFactory.fillDefaults().numColumns(6).applyTo(labelComposite);\r
 133         Label label = new Label(labelComposite, SWT.NONE);\r
 134         label.setText("Name");\r
 135 \r
 136         TrackedText name = new TrackedText(labelComposite, support, SWT.BORDER);\r
 137         name.setTextFactory(new StringPropertyFactory(Layer0.URIs.HasLabel));\r
 138         name.addModifyListener(new StringPropertyModifier(context, Layer0.URIs.HasLabel));\r
 139         name.addModifyListener(new StringPropertyModifier(context, Layer0.URIs.HasName));\r
 140         name.setColorProvider(new SysdynBasicColorProvider(new LocalResourceManager(JFaceResources.getResources(), name.getWidget())));\r
 141         GridDataFactory.fillDefaults().grab(true, false).applyTo(name.getWidget());\r
 142         \r
 143         label = new Label(labelComposite, SWT.NONE);\r
 144         label.setText("Number of runs");\r
 145         \r
 146         TrackedText n = new TrackedText(labelComposite, support, SWT.BORDER);\r
 147         n.setTextFactory(new IntegerPropertyFactory(SysdynResource.URIs.SensitivityAnalysisExperiment_numberOfValues));\r
 148         n.addModifyListener(new IntegerPropertyModifier(context, SysdynResource.URIs.SensitivityAnalysisExperiment_numberOfValues));\r
 149         n.setInputValidator(new IntegerValidator());\r
 150         n.setColorProvider(new SysdynBasicColorProvider(new LocalResourceManager(JFaceResources.getResources(), n.getWidget())));\r
 151         GridDataFactory.fillDefaults().hint(80, SWT.DEFAULT).applyTo(n.getWidget());\r
 152         \r
 153         label = new Label(labelComposite, SWT.NONE);\r
 154         label.setText("Seed");\r
 155         \r
 156         TrackedText seed = new TrackedText(labelComposite, support, SWT.BORDER);\r
 157         seed.setTextFactory(new IntegerPropertyFactory(SysdynResource.URIs.SensitivityAnalysisExperiment_randomSeed));\r
 158         seed.addModifyListener(new IntegerPropertyModifier(context, SysdynResource.URIs.SensitivityAnalysisExperiment_randomSeed));\r
 159         seed.setInputValidator(new IntegerValidator());\r
 160         seed.setColorProvider(new SysdynBasicColorProvider(new LocalResourceManager(JFaceResources.getResources(), seed.getWidget())));\r
 161         GridDataFactory.fillDefaults().hint(80, SWT.DEFAULT).applyTo(seed.getWidget());\r
 162 \r
 163         // (Ontology-based) GraphExplorer displaying range axis and variables mapped to those axis\r
 164         explorer = new AxisAndVariablesExplorerComposite(ArrayMap.keys(\r
 165                 "displaySelectors", "displayFilter", "treeView").values(false, false, true), site, content, support, SWT.FULL_SELECTION | SWT.BORDER | SWT.SINGLE);\r
 166         \r
 167         explorer.setBrowseContexts(SysdynResource.URIs.SensitivityAnalysisExperiment_ParameterBrowseContext);\r
 168         explorer.setInputSource(new SingleSelectionInputSource(\r
 169                 Resource.class));\r
 170         explorer.getExplorer().setAutoExpandLevel(2); // Expand everything in the beginning\r
 171         explorer.setColumns( new Column[] { new Column(ColumnKeys.SINGLE, Align.LEFT, 0, "", true) });\r
 172         explorer.finish();\r
 173         \r
 174         \r
 175         ((Tree)explorer.getExplorerControl()).addSelectionListener(new SelectionAdapter() {\r
 176             public void widgetSelected(SelectionEvent e) {\r
 177                 updateSelection(context);\r
 178             }\r
 179         });\r
 180 \r
 181         /* Listener for displaying information of the first parameter during view initialization\r
 182          * The view does not have focus, so normal selection listener mechanisms do not work. \r
 183          * Need to do it the hard way. \r
 184          */ \r
 185         Listener listener = new Listener() {\r
 186 \r
 187             boolean flag = false;\r
 188             @Override\r
 189             public void handleEvent(Event event) {\r
 190                 switch (event.type) {\r
 191                     case SWT.Activate:\r
 192                     case SWT.Show:\r
 193                     case SWT.Paint:\r
 194                     {\r
 195                         if(!flag && ((Tree) event.widget).getItems().length > 0) {\r
 196                             flag = true;\r
 197                             TreeItem item = ((Tree) event.widget).getItems()[0];\r
 198                             IAdaptable adaptable = (IAdaptable) item.getData();\r
 199                             MapNodeContext nc = (MapNodeContext) adaptable.getAdapter(NodeContext.class);\r
 200                             parameterSupport.fireInput(context, new StructuredSelection(nc.getConstant(BuiltinKeys.INPUT)));\r
 201                             propertyContainer.setContent(content);\r
 202                             Point size = content.computeSize(SWT.DEFAULT, SWT.DEFAULT);\r
 203                             propertyContainer.setMinSize(size);\r
 204                         }\r
 205                     }\r
 206                 }\r
 207             }\r
 208         };\r
 209 \r
 210         Tree tree = explorer.getExplorerControl();\r
 211         tree.addListener(SWT.Activate, listener);\r
 212         tree.addListener(SWT.Show, listener);\r
 213         tree.addListener(SWT.Paint,listener);\r
 214         /* End listener for displaying information for first parameter during view initialization*/\r
 215         \r
 216         explorer.addDisposeListener(new DisposeListener() {\r
 217             \r
 218             @Override\r
 219             public void widgetDisposed(DisposeEvent e) {\r
 220                 if(contentListener != null)\r
 221                     contentListener.dispose();              \r
 222             }\r
 223         });\r
 224         \r
 225         \r
 226         GridDataFactory.fillDefaults().hint(250, SWT.DEFAULT).grab(false, true).applyTo(explorer);\r
 227 \r
 228         Composite buttonComposite = new Composite(explorer, SWT.NONE);\r
 229         GridDataFactory.fillDefaults().applyTo(buttonComposite);\r
 230         GridLayoutFactory.fillDefaults().numColumns(3).applyTo(buttonComposite);\r
 231         \r
 232         Button addVariable = new Button(buttonComposite, support, SWT.NONE);\r
 233         addVariable.setText("Add parameter");\r
 234         addVariable.addSelectionListener(new SelectionListenerImpl<Resource>(context) {\r
 235 \r
 236             @Override\r
 237             public void apply(WriteGraph graph, Resource input) throws DatabaseException {\r
 238                 SysdynResource sr = SysdynResource.getInstance(graph);\r
 239                 Layer0 L0 = Layer0.getInstance(graph);\r
 240                 \r
 241                 Resource distribution = GraphUtils.create2(graph, sr.UniformDistribution,\r
 242                         sr.UniformDistribution_minValue, 0.0,\r
 243                         sr.UniformDistribution_maxValue, 10.0);\r
 244                 \r
 245                 Resource parameter = GraphUtils.create2(graph, sr.SensitivityAnalysisExperiment_Parameter,\r
 246                         sr.SensitivityAnalysisExperiment_Parameter_propabilityDistribution, distribution,\r
 247                         sr.SensitivityAnalysisExperiment_Parameter_variable, ChartUtils.emptyVariableName,\r
 248                         L0.PartOf, input);\r
 249                 \r
 250                 Resource parameterList = graph.getPossibleObject(input, sr.SensitivityAnalysisExperiment_parameterList);\r
 251                 ListUtils.insertBack(graph, parameterList, Collections.singleton(parameter));\r
 252             }\r
 253         });\r
 254 \r
 255         remove = new Button(buttonComposite, parameterSupport, SWT.NONE);\r
 256         remove.setText("Remove");\r
 257         remove.addSelectionListener(new SelectionListenerImpl<Resource>(context) {\r
 258 \r
 259             @Override\r
 260             public void apply(WriteGraph graph, Resource input) throws DatabaseException {\r
 261                 if(input == null)\r
 262                     return;\r
 263                 \r
 264                 SysdynResource sr = SysdynResource.getInstance(graph);\r
 265                 Layer0 L0 = Layer0.getInstance(graph);\r
 266                 \r
 267                 Resource experiment = graph.getPossibleObject(input, L0.PartOf);\r
 268                 Resource parameterList = graph.getPossibleObject(experiment, sr.SensitivityAnalysisExperiment_parameterList);\r
 269                 \r
 270                 if(ListUtils.toList(graph, parameterList).size() > 1)\r
 271                     ListUtils.removeElement(graph, parameterList, input);\r
 272  \r
 273             }\r
 274             \r
 275         });\r
 276 \r
 277         propertyContainer.setContent(content);\r
 278         Point tsize = content.computeSize(SWT.DEFAULT, SWT.DEFAULT);\r
 279         propertyContainer.setMinSize(tsize);\r
 280         \r
 281         \r
 282         Group parameterPropertyGroup = new Group(content, SWT.NONE);\r
 283         GridDataFactory.fillDefaults().grab(true, false).applyTo(parameterPropertyGroup);\r
 284         GridLayoutFactory.fillDefaults().applyTo(parameterPropertyGroup);\r
 285         \r
 286         parameterProperties = new Composite(parameterPropertyGroup, SWT.NONE);\r
 287         GridDataFactory.fillDefaults().grab(true, false).applyTo(parameterProperties);\r
 288         GridLayoutFactory.fillDefaults().numColumns(2).applyTo(parameterProperties);\r
 289 \r
 290         // Label\r
 291         label = new Label(parameterProperties, SWT.NONE);\r
 292         label.setText("Variable:");\r
 293         GridDataFactory.fillDefaults().align(SWT.END, SWT.CENTER).applyTo(label);\r
 294 \r
 295         TrackedText variable = new TrackedText(parameterProperties, parameterSupport, SWT.BORDER);\r
 296         variable.setTextFactory(new StringPropertyFactory(SysdynResource.URIs.SensitivityAnalysisExperiment_Parameter_variable));\r
 297         variable.addModifyListener(new VariableNameModifier(variable.getWidget(), parameterSupport, SysdynResource.URIs.SensitivityAnalysisExperiment_Parameter_variable, SysdynResource.URIs.SensitivityAnalysisExperiment_Parameter_indexes));\r
 298         variable.setColorProvider(new SysdynBasicColorProvider(new LocalResourceManager(JFaceResources.getResources(), variable.getWidget())));\r
 299         variable.setInputValidator(new ParameterExistsValidator(parameterSupport, variable));\r
 300         GridDataFactory.fillDefaults().grab(true, false).applyTo(variable.getWidget());\r
 301         \r
 302         label = new Label(parameterProperties, SWT.NONE);\r
 303         label.setText("Range:");\r
 304         GridDataFactory.fillDefaults().align(SWT.END, SWT.CENTER).applyTo(label);\r
 305         \r
 306         RangeComposite rangeComposite = new RangeComposite(parameterProperties, context, parameterSupport, SWT.NONE) {\r
 307             @Override\r
 308             protected Resource getIndexRelation(ReadGraph graph) {\r
 309                 return SysdynResource.getInstance(graph).SensitivityAnalysisExperiment_Parameter_indexes;\r
 310             }\r
 311         };\r
 312         GridDataFactory.fillDefaults().grab(true, false).applyTo(rangeComposite);\r
 313         \r
 314 //        TrackedText variable = new TrackedText(parameterProperties, parameterSupport, SWT.BORDER);\r
 315 //        variable.setTextFactory(new StringPropertyFactory(SysdynResource.URIs.SensitivityAnalysisExperiment_Parameter_variable));\r
 316 //        variable.addModifyListener(new StringPropertyModifier(context, SysdynResource.URIs.SensitivityAnalysisExperiment_Parameter_variable));\r
 317 //        variable.setColorProvider(new SysdynBasicColorProvider(new LocalResourceManager(JFaceResources.getResources(), variable.getWidget())));\r
 318 //        GridDataFactory.fillDefaults().grab(true, false).applyTo(variable.getWidget());\r
 319 \r
 320         label = new Label(parameterProperties, SWT.NONE);\r
 321         label.setText("Distribution:");\r
 322         GridDataFactory.fillDefaults().align(SWT.END, SWT.CENTER).applyTo(label);\r
 323 \r
 324         TrackedCombo distributionSelector = new TrackedCombo(parameterProperties, parameterSupport, SWT.DROP_DOWN);\r
 325         distributionSelector.setItemFactory(new ReadFactoryImpl<Resource, Map<String,Object>>() {\r
 326 \r
 327             @Override\r
 328             public Map<String, Object> perform(ReadGraph graph, Resource input) throws DatabaseException {\r
 329                 SysdynResource SR = SysdynResource.getInstance(graph);\r
 330                 Map<String, Object> items = new HashMap<String, Object>();\r
 331 \r
 332                 items.put("Normal", SR.NormalDistribution);\r
 333                 items.put("Uniform", SR.UniformDistribution);\r
 334                 items.put("Interval", SR.Interval);\r
 335 \r
 336                 return items;\r
 337             }\r
 338 \r
 339         });\r
 340 \r
 341         distributionSelector.setSelectionFactory(new ReadFactoryImpl<Resource, String>() {\r
 342 \r
 343             @Override\r
 344             public String perform(ReadGraph graph, Resource parameter) throws DatabaseException {\r
 345                 SysdynResource SR = SysdynResource.getInstance(graph);\r
 346                 Resource distribution = graph.getPossibleObject(parameter, SR.SensitivityAnalysisExperiment_Parameter_propabilityDistribution);\r
 347                 if(distribution == null)\r
 348                     return null;\r
 349                 \r
 350                 if(graph.isInstanceOf(distribution, SR.UniformDistribution))\r
 351                     return "Uniform";\r
 352                 else if(graph.isInstanceOf(distribution, SR.NormalDistribution))\r
 353                     return "Normal";\r
 354                 else if(graph.isInstanceOf(distribution, SR.Interval))\r
 355                     return "Interval";\r
 356                 else\r
 357                     return "";\r
 358 \r
 359             }\r
 360         });\r
 361 \r
 362         distributionSelector.addModifyListener(new ComboModifyListenerImpl<Resource>() {\r
 363 \r
 364             @Override\r
 365             public void applyText(WriteGraph graph, Resource input, String text)\r
 366                     throws DatabaseException {\r
 367                 if(text == null || text.isEmpty())\r
 368                     return;\r
 369 \r
 370                 SysdynResource SR = SysdynResource.getInstance(graph);\r
 371 \r
 372                 Resource type = SR.UniformDistribution;\r
 373 \r
 374                 if("Normal".equals(text))\r
 375                     type = SR.NormalDistribution;\r
 376                 else if("Interval".equals(text))\r
 377                     type = SR.Interval; \r
 378 \r
 379                 graph.deny(input, SR.SensitivityAnalysisExperiment_Parameter_propabilityDistribution);\r
 380 \r
 381                 GraphUtils.create2(graph, type,\r
 382                         SR.SensitivityAnalysisExperiment_Parameter_propabilityDistribution_Inverse, input);\r
 383 \r
 384                 dirty = true;\r
 385             }\r
 386         });\r
 387 \r
 388         distributionSelector.addModifyListener(new TextModifyListener() {\r
 389 \r
 390             @Override\r
 391             public void modifyText(TrackedModifyEvent e) {\r
 392                 if(dirty) {\r
 393                     parameterSupport.update();\r
 394                     dirty = false;\r
 395                     propertyContainer.setContent(content);\r
 396                     Point size = content.computeSize(SWT.DEFAULT, SWT.DEFAULT);\r
 397                     propertyContainer.setMinSize(size);\r
 398                 }\r
 399             }\r
 400         });\r
 401 \r
 402         label = new Label(parameterProperties, SWT.NONE);\r
 403         \r
 404         DistributionPropertyWidget dpw = new DistributionPropertyWidget(parameterProperties, context, parameterSupport, SWT.NONE);\r
 405         GridDataFactory.fillDefaults().grab(true, true).applyTo(dpw);\r
 406 \r
 407     }\r
 408 \r
 409 \r
 410     /**\r
 411      * Updates the content of propertyContainer  \r
 412      * @param context\r
 413      */\r
 414     private void updateSelection(ISessionContext context) {\r
 415         ISelectionProvider selectionProvider = (ISelectionProvider)explorer.getAdapter(ISelectionProvider.class);\r
 416         IStructuredSelection selection = (IStructuredSelection)selectionProvider.getSelection();\r
 417         parameterSupport.fireInput(context, selection);\r
 418 \r
 419         propertyContainer.setContent(content);\r
 420         Point size = content.computeSize(SWT.DEFAULT, SWT.DEFAULT);\r
 421         propertyContainer.setMinSize(size);\r
 422     }\r
 423 \r
 424 \r
 425     @Override\r
 426     public void setInput(ISessionContext context, Object input) {\r
 427         experiment = AdaptionUtils.adaptToSingle(input, Resource.class);\r
 428         if(contentListener == null) {\r
 429             contentListener = new DisposableListener<Collection<Resource>>() {\r
 430 \r
 431                 @Override\r
 432                 public void execute(Collection<Resource> result) {\r
 433                     if(remove != null && !remove.getWidget().isDisposed() && result != null) {\r
 434                         remove.getWidget().getDisplay().asyncExec(new RunnableWithObject(result) {\r
 435                             @Override\r
 436                             public void run() {\r
 437                                 if(!remove.getWidget().isDisposed()) {\r
 438                                     @SuppressWarnings("unchecked")\r
 439                                     Collection<Resource> result = (Collection<Resource>) getObject();\r
 440                                     if(result.size() > 1)\r
 441                                         remove.getWidget().setEnabled(true);\r
 442                                     else\r
 443                                         remove.getWidget().setEnabled(false);\r
 444                                 }\r
 445                             }\r
 446                         });\r
 447 \r
 448                     }\r
 449                 }\r
 450 \r
 451                 @Override\r
 452                 public void exception(Throwable t) {\r
 453                     t.printStackTrace();\r
 454                 }\r
 455             };\r
 456 \r
 457             SimanticsUI.getSession().asyncRequest(new Read<Collection<Resource>> () {\r
 458 \r
 459                 @SuppressWarnings("unchecked")\r
 460                 @Override\r
 461                 public Collection<Resource> perform(ReadGraph graph) throws DatabaseException {\r
 462                     return (Collection<Resource>) new ParameterChildRule().getChildren(graph, experiment);\r
 463                 }\r
 464 \r
 465             }, contentListener);\r
 466         }\r
 467 \r
 468         \r
 469     }\r
 470 \r
 471 }\r