org.simantics.district.selection.ui/src/org/simantics/district/selection/ui/parts/EditSelectorDialog.java

   1 package org.simantics.district.selection.ui.parts;
   2
   3 import java.util.ArrayList;
   4 import java.util.Collection;
   5 import java.util.HashMap;
   6 import java.util.List;
   7 import java.util.Map;
   8 import java.util.UUID;
   9
  10 import javax.inject.Inject;
  11
  12 import org.eclipse.core.runtime.IStatus;
  13 import org.eclipse.core.runtime.Status;
  14 import org.eclipse.jface.dialogs.Dialog;
  15 import org.eclipse.jface.dialogs.ErrorDialog;
  16 import org.eclipse.jface.layout.GridDataFactory;
  17 import org.eclipse.jface.layout.GridLayoutFactory;
  18 import org.eclipse.jface.layout.RowLayoutFactory;
  19 import org.eclipse.jface.window.Window;
  20 import org.eclipse.swt.SWT;
  21 import org.eclipse.swt.custom.StackLayout;
  22 import org.eclipse.swt.events.SelectionAdapter;
  23 import org.eclipse.swt.events.SelectionEvent;
  24 import org.eclipse.swt.widgets.Button;
  25 import org.eclipse.swt.widgets.Combo;
  26 import org.eclipse.swt.widgets.Composite;
  27 import org.eclipse.swt.widgets.Control;
  28 import org.eclipse.swt.widgets.Label;
  29 import org.eclipse.swt.widgets.Shell;
  30 import org.eclipse.swt.widgets.Text;
  31 import org.simantics.Simantics;
  32 import org.simantics.db.ReadGraph;
  33 import org.simantics.db.Resource;
  34 import org.simantics.db.Session;
  35 import org.simantics.db.WriteGraph;
  36 import org.simantics.db.common.request.ReadRequest;
  37 import org.simantics.db.common.request.WriteRequest;
  38 import org.simantics.db.exception.DatabaseException;
  39 import org.simantics.db.exception.RuntimeDatabaseException;
  40 import org.simantics.db.layer0.QueryIndexUtils;
  41 import org.simantics.db.layer0.request.ActiveModels;
  42 import org.simantics.db.layer0.util.Layer0Utils;
  43 import org.simantics.db.request.Read;
  44 import org.simantics.db.request.WriteResult;
  45 import org.simantics.diagram.stubs.DiagramResource;
  46 import org.simantics.district.region.ontology.DiagramRegionsResource;
  47 import org.simantics.district.route.ontology.RouteResource;
  48 import org.simantics.district.selection.ElementSelectionResource;
  49 import org.simantics.district.selection.ElementSelectionUtils;
  50 import org.simantics.district.selection.ElementSelector;
  51 import org.simantics.district.selection.ElementSelector.AggregateCondition;
  52 import org.simantics.district.selection.ElementSelector.AggregateCondition.Type;
  53 import org.simantics.district.selection.ElementSelector.All;
  54 import org.simantics.district.selection.ElementSelector.Condition;
  55 import org.simantics.district.selection.ElementSelector.DiagramGenerator;
  56 import org.simantics.district.selection.ElementSelector.ExplicitGenerator;
  57 import org.simantics.district.selection.ElementSelector.Generator;
  58 import org.simantics.district.selection.ElementSelector.ModelGenerator;
  59 import org.simantics.district.selection.ElementSelector.PropertyCondition;
  60 import org.simantics.district.selection.ElementSelector.PropertySelector;
  61 import org.simantics.district.selection.ElementSelector.RegionCondition;
  62 import org.simantics.district.selection.ElementSelector.RouteCondition;
  63 import org.simantics.district.selection.ElementSelector.Selector;
  64 import org.simantics.layer0.Layer0;
  65 import org.simantics.modeling.ModelingResources;
  66 import org.simantics.utils.datastructures.Arrays;
  67 import org.slf4j.Logger;
  68 import org.slf4j.LoggerFactory;
  69
  70 public class EditSelectorDialog extends Dialog {
  71
  72         private static Logger LOGGER = LoggerFactory.getLogger(EditSelectorDialog.class);
  73
  74         private ElementSelector elementSelector;
  75
  76         // Currently selected elements
  77         Collection<Resource> currentSelection;
  78
  79         // Data for comboboxes
  80         Map<Resource, String> diagrams;
  81
  82         private String[] regionNames;
  83         private Resource[] regionResources;
  84
  85         private String[] routeNames;
  86         private Resource[] routeResources;
  87
  88         // Dialog fields
  89         private int generatorIndex;
  90         private Combo sourceField;
  91
  92         private String name;
  93         private Text nameField;
  94
  95         private Resource diagram;
  96         private Combo diagramField;
  97
  98         private int selectorIndex;
  99         private Combo selectorField;
 100
 101         private String propertyName;
 102         private Text propertyField;
 103
 104         private int numberOfItems;
 105         private Text nField;
 106
 107         private Condition condition;
 108         private Button removeConditionButton;
 109         private Text conditionLabel;
 110
 111         // Dialog area component
 112         private Composite content;
 113
 114         @Inject
 115         public EditSelectorDialog(Shell shell, ElementSelector elementSelector, Collection<Resource> currentSelection) {
 116                 super(shell);
 117
 118                 this.elementSelector = elementSelector;
 119                 if (elementSelector != null) {
 120                         try {
 121                                 Simantics.getSession().sync(new ReadRequest() {
 122                                         @Override
 123                                         public void run(ReadGraph graph) throws DatabaseException {
 124                                                 elementSelector.buildSelection(graph);
 125                                         }
 126                                 });
 127                         } catch (DatabaseException e1) {
 128                                 LOGGER.error("Failed to read element selector resource " + elementSelector.getResource(), e1);
 129                                 throw new RuntimeDatabaseException(e1);
 130                         }
 131                 }
 132
 133                 this.currentSelection = currentSelection;
 134
 135                 final Map<Resource, String> regions = new HashMap<>();
 136                 final Map<Resource, String> routes = new HashMap<>();
 137
 138                 try {
 139                         Simantics.getSession().syncRequest(new Read<Void>() {
 140                                 @Override
 141                                 public Void perform(ReadGraph graph) throws DatabaseException {
 142                                         Resource model = ActiveModels.getPossibleActiveModel(graph, Simantics.getProjectResource());
 143                                         List<Resource> regionCollection = QueryIndexUtils.searchByType(graph, model, DiagramRegionsResource.getInstance(graph).Region);
 144                                         for (Resource r : regionCollection) {
 145                                                 String name = graph.getRelatedValue(r, Layer0.getInstance(graph).HasName);
 146                                                 regions.put(r, name);
 147                                         }
 148
 149                                         List<Resource> routeCollection = QueryIndexUtils.searchByType(graph, model, RouteResource.getInstance(graph).Route);
 150                                         for (Resource r : routeCollection) {
 151                                                 String name = graph.getRelatedValue(r, Layer0.getInstance(graph).HasName);
 152                                                 routes.put(r, name);
 153                                         }
 154                                         return null;
 155                                 }
 156                         });
 157                 } catch (DatabaseException e) {
 158                         LOGGER.error("Failed to read routes and/or regions in the model", e);
 159                 }
 160
 161                 regionNames = regions.values().toArray(new String[regions.size()]);
 162                 regionResources = regions.keySet().toArray(new Resource[regions.size()]);
 163
 164                 routeNames = routes.values().toArray(new String[routes.size()]);
 165                 routeResources = routes.keySet().toArray(new Resource[routes.size()]);
 166
 167                 name = elementSelector != null ? elementSelector.getName() : "";
 168                 propertyName = "";
 169                 numberOfItems = 1;
 170                 generatorIndex = 0;
 171                 selectorIndex = 0;
 172                 diagram = null;
 173                 condition = null;
 174
 175                 if (elementSelector != null) {
 176                         Generator generator = elementSelector.getGenerator();
 177                         if (generator instanceof ModelGenerator) {
 178                                 generatorIndex = 0;
 179                         }
 180                         else if (generator instanceof DiagramGenerator) {
 181                                 generatorIndex = 1;
 182                                 diagram = ((DiagramGenerator)generator).diagram;
 183                         }
 184                         else if (generator instanceof ExplicitGenerator) {
 185                                 generatorIndex = 2;
 186                                 // TODO: Management of explicit lists of elements
 187                         }
 188                         else {
 189                                 throw new IllegalStateException("Unknown generator type " + generator.getClass().getName());
 190                         }
 191
 192                         Selector selector = elementSelector.getSelector();
 193                         if (selector instanceof All) {
 194                                 selectorIndex = 0;
 195                         }
 196                         else if (selector instanceof PropertySelector) {
 197                                 PropertySelector propertySelector = (PropertySelector)selector;
 198                                 selectorIndex = propertySelector.smallest ? 1 : 2;
 199                                 propertyName = propertySelector.propertyName;
 200                                 numberOfItems = propertySelector.resultCount;
 201                         }
 202                         else {
 203                                 throw new IllegalStateException("Unknwon selector type " + selector.getClass().getName());
 204                         }
 205
 206                         condition = elementSelector.getCondition();
 207                 }
 208         }
 209
 210         @Override
 211         protected void okPressed() {
 212                 generatorIndex = sourceField.getSelectionIndex();
 213                 if (generatorIndex == 1) {
 214                         int selectionIndex = diagramField.getSelectionIndex();
 215                         if (selectionIndex < 0) {
 216                                 ErrorDialog.openError(getShell(), "Error", "Please select a diagram", new Status(IStatus.ERROR, "org.simantics.district.selection.ui", "No diagram selected"));
 217                                 return;
 218                         }
 219
 220                         diagram = new ArrayList<Resource>(diagrams.keySet()).get(selectionIndex);
 221                 }
 222
 223                 name = nameField.getText();
 224
 225                 selectorIndex = selectorField.getSelectionIndex();
 226
 227                 propertyName = propertyField.getText();
 228                 String text = nField.getText();
 229                 numberOfItems = "".equals(text) ? 0 : Integer.parseInt(text);
 230
 231                 super.okPressed();
 232         }
 233
 234         public void writeSelection() throws DatabaseException {
 235                 Simantics.getSession().syncRequest(new WriteRequest() {
 236                         @Override
 237                         public void perform(WriteGraph graph) throws DatabaseException {
 238                                 Layer0 L0 = Layer0.getInstance(graph);
 239                                 ElementSelectionResource ES = ElementSelectionResource.getInstance(graph);
 240                                 ModelingResources MOD = ModelingResources.getInstance(graph);
 241                                 DiagramResource DIA = DiagramResource.getInstance(graph);
 242
 243                                 graph.markUndoPoint();
 244                                 Layer0Utils.addCommentMetadata(graph, "Created new element selection");
 245
 246                                 Resource lib = ElementSelectionUtils.ensureSelectionLibrary(graph);
 247
 248                                 // Selection
 249                                 Resource selection;
 250                                 if (elementSelector != null) {
 251                                         selection = elementSelector.getResource();
 252                                         graph.deny(selection);
 253                                 }
 254                                 else {
 255                                         selection = graph.newResource();
 256                                 }
 257
 258                                 graph.claim(selection, L0.InstanceOf, ES.Selection);
 259                                 graph.claimLiteral(selection, L0.HasName, L0.String, UUID.randomUUID().toString());
 260                                 graph.claimLiteral(selection, L0.HasLabel, L0.String, name);
 261                                 graph.claim(selection, L0.PartOf, lib);
 262
 263                                 // Generator
 264                                 Resource generator = graph.newResource();
 265                                 Resource generatorType;
 266                                 switch (generatorIndex) {
 267                                 case 0:
 268                                         generatorType = ES.Generator_Model;
 269                                         break;
 270                                 case 1:
 271                                         generatorType = ES.Generator_Diagram;
 272                                         Resource composite = graph.getPossibleObject(diagram, MOD.DiagramToComposite);
 273                                         graph.claim(generator, ES.Generator_HasDiagram, composite != null ? composite : diagram);
 274                                         break;
 275                                 case 2:
 276                                         generatorType = ES.Generator_Explicit;
 277                                         for (Resource r : currentSelection) {
 278                                                 // No connections
 279                                                 if (graph.isInstanceOf(r, DIA.Connection))
 280                                                         continue;
 281                                                 if (!graph.isInstanceOf(r, DIA.Element)) {
 282                                                         if (!graph.hasStatement(r, MOD.ComponentToElement))
 283                                                                 continue;
 284
 285                                                         r = graph.getPossibleObject(r, MOD.ComponentToElement);
 286                                                         if (r == null)
 287                                                                 continue;
 288                                                 }
 289
 290                                                 graph.claim(generator, ES.Generator_HasSelectedElement, r);
 291                                         }
 292                                         break;
 293                                 default: throw new IllegalStateException("Invalid source index " + generatorIndex);
 294                                 }
 295                                 graph.claim(generator, L0.InstanceOf, generatorType);
 296                                 graph.claim(selection, ES.Selection_HasGenerator, generator);
 297
 298                                 // Selector
 299                                 Resource selector = graph.newResource();
 300                                 Resource selectorType;
 301                                 switch (selectorIndex) {
 302                                 case 0: selectorType = ES.Selector_All; break;
 303                                 case 1: selectorType = ES.Selector_NLowest; break;
 304                                 case 2: selectorType = ES.Selector_NHighest; break;
 305                                 default: throw new IllegalStateException("Invalid selector index " + selectorIndex);
 306                                 }
 307                                 graph.claim(selector, L0.InstanceOf, selectorType);
 308                                 graph.claim(selection, ES.Selection_HasSelector, selector);
 309
 310                                 if (selectorIndex > 0) {
 311                                         graph.claimLiteral(selector, ES.PropertySelector_HasSelectionPropertyName, L0.String, propertyName);
 312                                         graph.claimLiteral(selector, ES.PropertySelector_HasResultCount, L0.Integer, numberOfItems);
 313                                 }
 314
 315                                 // Condition
 316                                 if (condition != null) {
 317                                         graph.claim(selection, ES.Selection_HasCondition, condition.resource);
 318                                 }
 319                         }
 320                 });
 321         }
 322
 323         @Override
 324         protected Control createDialogArea(Composite parent) {
 325                 // Set dialog title
 326                 getShell().setText("Edit element selector");
 327
 328                 content = new Composite(parent, SWT.NONE);
 329                 GridLayoutFactory.swtDefaults().numColumns(3).applyTo(content);
 330
 331                 // Name
 332                 Label nameLabel = new Label(content, SWT.NONE);
 333                 nameLabel.setText("Name");
 334                 GridDataFactory.swtDefaults().applyTo(nameLabel);
 335
 336                 nameField = new Text(content, SWT.BORDER);
 337                 nameField.setEditable(true);
 338                 nameField.setText(name);
 339                 GridDataFactory.swtDefaults().span(2, 1).hint(200, SWT.DEFAULT).applyTo(nameField);
 340
 341                 // Source
 342                 Label sourceLabel = new Label(content, SWT.NONE);
 343                 sourceLabel.setText("Source");
 344                 GridDataFactory.swtDefaults().applyTo(sourceLabel);
 345
 346                 sourceField = new Combo(content, SWT.BORDER | SWT.READ_ONLY);
 347                 sourceField.setItems("Model", "Diagram", "Current selection");
 348                 sourceField.select(generatorIndex);
 349                 GridDataFactory.swtDefaults().span(1, 1).applyTo(sourceField);
 350
 351                 diagramField = new Combo(content, SWT.BORDER | SWT.READ_ONLY);
 352                 GridDataFactory.swtDefaults().span(1, 1).applyTo(diagramField);
 353                 diagrams = ElementSelector.findDiagrams();
 354                 diagramField.setItems(diagrams.values().toArray(new String[diagrams.size()]));
 355
 356                 int diagramIndex = diagram != null ? new ArrayList<>(diagrams.keySet()).indexOf(diagram) : -1;
 357                 diagramField.select(diagramIndex);
 358
 359                 sourceField.addSelectionListener(new SelectionAdapter() {
 360                         @Override
 361                         public void widgetSelected(SelectionEvent e) {
 362                                 generatorIndex = sourceField.getSelectionIndex();
 363                                 diagramField.setVisible(isDiagramFieldVisible());
 364                         }
 365                 });
 366
 367                 sourceField.select(generatorIndex);
 368                 diagramField.setVisible(isDiagramFieldVisible());
 369
 370                 // Selector
 371                 Label selectorLabel = new Label(content, SWT.NONE);
 372                 selectorLabel.setText("Select");
 373                 GridDataFactory.swtDefaults().span(1, 1).applyTo(selectorLabel);
 374
 375                 selectorField = new Combo(content, SWT.BORDER | SWT.READ_ONLY);
 376                 selectorField.setItems("All", "N lowest", "N highest");
 377                 selectorField.select(selectorIndex);
 378                 GridDataFactory.swtDefaults().span(1, 1).applyTo(selectorField);
 379
 380                 Composite selectorComposite = new Composite(content, SWT.NONE);
 381                 GridDataFactory.swtDefaults().span(1, 1).applyTo(selectorComposite);
 382                 GridLayoutFactory.swtDefaults().numColumns(2).applyTo(selectorComposite);
 383
 384                 Label propertyLabel = new Label(selectorComposite, SWT.NONE);
 385                 propertyLabel.setText("Property name");
 386                 GridDataFactory.swtDefaults().applyTo(propertyLabel);
 387
 388                 propertyField = new Text(selectorComposite, SWT.BORDER);
 389                 propertyField.setText(propertyName);
 390                 GridDataFactory.swtDefaults().hint(80, SWT.DEFAULT).applyTo(propertyField);
 391
 392                 Label nLabel = new Label(selectorComposite, SWT.NONE);
 393                 nLabel.setText("Number of elements");
 394                 GridDataFactory.swtDefaults().applyTo(nLabel);
 395
 396                 nField = new Text(selectorComposite, SWT.BORDER);
 397                 nField.setText(Integer.toString(numberOfItems));
 398                 GridDataFactory.swtDefaults().hint(40, SWT.DEFAULT).applyTo(nField);
 399
 400                 selectorField.addSelectionListener(new SelectionAdapter() {
 401                         @Override
 402                         public void widgetSelected(SelectionEvent e) {
 403                                 selectorIndex = selectorField.getSelectionIndex();
 404                                 selectorComposite.setVisible(isSelectorCompositeVisible());
 405                         }
 406                 });
 407
 408                 selectorField.select(selectorIndex);
 409                 selectorComposite.setVisible(isSelectorCompositeVisible());
 410
 411                 // Condition
 412                 new Label(content, SWT.NONE).setText("Condition");
 413                 conditionLabel = new Text(content, SWT.READ_ONLY);
 414                 GridDataFactory.swtDefaults().span(2, 1).applyTo(conditionLabel);
 415
 416                 new Label(content, SWT.NONE);
 417                 Composite conditionPanel = new Composite(content, SWT.NONE);
 418                 GridDataFactory.swtDefaults().span(2, 1).applyTo(conditionPanel);
 419                 GridLayoutFactory.swtDefaults().margins(0, 0).numColumns(2).applyTo(conditionPanel);
 420                 Button conditionButton = new Button(conditionPanel, SWT.PUSH);
 421                 conditionButton.setText("Edit...");
 422                 GridDataFactory.swtDefaults().span(1, 1).applyTo(conditionButton);
 423                 removeConditionButton = new Button(conditionPanel, SWT.PUSH);
 424                 removeConditionButton.setText("Remove");
 425                 GridDataFactory.swtDefaults().span(1, 1).applyTo(removeConditionButton);
 426
 427                 updateCondition();
 428
 429                 conditionButton.addSelectionListener(new SelectionAdapter() {
 430                         @Override
 431                         public void widgetSelected(SelectionEvent e) {
 432                                 ConditionDialog dialog = new ConditionDialog(getShell(), condition);
 433                                 if (dialog.open() == Window.OK) {
 434                                         try {
 435                                                 condition = dialog.createCondition();
 436                                         } catch (DatabaseException e1) {
 437                                                 LOGGER.error("Creating a condition object failed", e1);
 438                                         }
 439
 440                                         updateCondition();
 441                                 }
 442                         }
 443                 });
 444
 445                 removeConditionButton.addSelectionListener(new SelectionAdapter() {
 446                         @Override
 447                         public void widgetSelected(SelectionEvent e) {
 448                                 condition = null;
 449                                 updateCondition();
 450                         }
 451                 });
 452
 453                 return content;
 454         }
 455
 456         private void updateCondition() {
 457                 if (condition != null) {
 458                         removeConditionButton.setEnabled(true);
 459                         try {
 460                                 conditionLabel.setText(ElementSelector.getExpression(Simantics.getSession(), condition.resource));
 461                         } catch (DatabaseException e) {
 462                                 LOGGER.error("Error getting expression string for " + condition.resource);
 463                         }
 464                 }
 465                 else {
 466                         conditionLabel.setText("No condition");
 467                         removeConditionButton.setEnabled(false);
 468                 }
 469
 470                 content.layout();
 471         }
 472
 473         private boolean isDiagramFieldVisible() {
 474                 return generatorIndex == 1;
 475         }
 476
 477         private boolean isSelectorCompositeVisible() {
 478                 return selectorIndex != 0;
 479         }
 480
 481         class ConditionDialog extends Dialog {
 482                 // Resource of the edited condition
 483                 private Resource existingResource;
 484
 485                 // Inverse condition button
 486                 private boolean isInverse;
 487                 private Button inverseField;
 488
 489                 // Condition type
 490                 private int typeIndex;
 491                 private Combo typeField;
 492
 493                 // Type-specific control panels under a stack layout
 494                 private Composite stackPanel;
 495                 private StackLayout stack;
 496
 497                 private Composite propertyPanel;
 498                 private Composite regionPanel;
 499                 private Composite routePanel;
 500                 private Composite aggregatePanel;
 501
 502                 // Property condition
 503                 private Double lowerLimit;
 504                 private Double upperLimit;
 505                 private String propertyName;
 506
 507                 private Text propertyNameField;
 508                 private Text lowerLimitField;
 509                 private Text upperLimitField;
 510
 511                 // Region condition
 512                 private Resource region;
 513                 private Combo regionField;
 514
 515                 // Route condition
 516                 private Resource route;
 517                 private Combo routeField;
 518
 519                 // Aggregate condition
 520                 private List<Condition> subConditions;
 521                 private boolean isConjunction;
 522
 523                 private org.eclipse.swt.widgets.List subConditionField;
 524                 private Combo operatorField;
 525
 526                 public ConditionDialog(Shell shell, Condition condition) {
 527                         super(shell);
 528
 529                         typeIndex = 0;
 530                         isInverse = false;
 531                         propertyName = "";
 532                         upperLimit = null;
 533                         lowerLimit = null;
 534                         subConditions = new ArrayList<>();
 535
 536                         existingResource = condition != null ? condition.resource : null;
 537
 538                         if (condition != null) {
 539                                 if (condition instanceof PropertyCondition) {
 540                                         typeIndex = 0;
 541                                         PropertyCondition propertyCondition = (PropertyCondition)condition;
 542                                         propertyName = propertyCondition.propertyName;
 543                                         upperLimit = propertyCondition.upperLimit;
 544                                         lowerLimit = propertyCondition.lowerLimit;
 545                                 }
 546                                 else if (condition instanceof RegionCondition) {
 547                                         typeIndex = 1;
 548                                         region = ((RegionCondition)condition).regionResource;
 549                                 }
 550                                 else if (condition instanceof RouteCondition) {
 551                                         typeIndex = 2;
 552                                         route = ((RouteCondition)condition).routeResource;
 553                                 }
 554                                 else if (condition instanceof AggregateCondition) {
 555                                         typeIndex = 3;
 556                                         subConditions = new ArrayList<>(((AggregateCondition)condition).conditions);
 557                                         isConjunction = ((AggregateCondition)condition).type == Type.CONJUNCTION;
 558                                         isInverse = ((AggregateCondition)condition).type == Type.NEGATION;
 559                                 }
 560                         }
 561                 }
 562
 563                 @Override
 564                 protected Control createDialogArea(Composite parent) {
 565                         getShell().setText("Edit selector condition");
 566
 567                         Composite content = (Composite)super.createDialogArea(parent);
 568                         GridLayoutFactory.swtDefaults().numColumns(1).applyTo(content);
 569
 570                         GridDataFactory defaultWidth = GridDataFactory.swtDefaults().hint(200, SWT.DEFAULT);
 571
 572                         // Is inverse
 573                         inverseField = new Button(content, SWT.CHECK);
 574                         inverseField.setText("Is inverse");
 575                         inverseField.setSelection(isInverse);
 576
 577                         // Condition type
 578                         typeField = new Combo(content, SWT.BORDER | SWT.READ_ONLY);
 579                         typeField.setItems("Property value", "In region", "On route", "Combination");
 580                         typeField.select(typeIndex);
 581
 582                         // Type-dependent stacked panels
 583                         stackPanel = new Composite(content, SWT.NONE);
 584                         stack = new StackLayout();
 585                         stackPanel.setLayout(stack);
 586
 587                         // Property condition panel
 588                         propertyPanel = new Composite(stackPanel, SWT.NONE);
 589                         GridLayoutFactory.swtDefaults().numColumns(2).applyTo(propertyPanel);
 590
 591                         new Label(propertyPanel, SWT.NONE).setText("Property name");
 592                         propertyNameField = new Text(propertyPanel, SWT.BORDER);
 593                         propertyNameField.setText(propertyName);
 594                         defaultWidth.applyTo(propertyNameField);
 595
 596                         new Label(propertyPanel, SWT.NONE).setText("Lower limit");
 597                         lowerLimitField = new Text(propertyPanel, SWT.BORDER);
 598                         defaultWidth.applyTo(lowerLimitField);
 599                         if (lowerLimit != null) lowerLimitField.setText(lowerLimit.toString());
 600
 601                         new Label(propertyPanel, SWT.NONE).setText("Upper limit");
 602                         upperLimitField = new Text(propertyPanel, SWT.BORDER);
 603                         defaultWidth.applyTo(upperLimitField);
 604                         if (upperLimit != null) upperLimitField.setText(upperLimit.toString());
 605
 606                         // Region condition panel
 607                         regionPanel = new Composite(stackPanel, SWT.NONE);
 608                         GridLayoutFactory.swtDefaults().numColumns(2).applyTo(regionPanel);
 609
 610                         new Label(regionPanel, SWT.NONE).setText("Region");
 611                         regionField = new Combo(regionPanel, SWT.BORDER | SWT.READ_ONLY);
 612                         regionField.setItems(regionNames);
 613                         defaultWidth.applyTo(regionField);
 614
 615                         if (region != null) {
 616                                 int regionIndex = Arrays.indexOf(regionResources, region);
 617                                 regionField.select(regionIndex);
 618                         }
 619                         else {
 620                                 regionField.select(0);
 621                         }
 622
 623                         // Route condition panel
 624                         routePanel = new Composite(stackPanel, SWT.NONE);
 625                         GridLayoutFactory.swtDefaults().numColumns(2).applyTo(routePanel);
 626
 627                         new Label(routePanel, SWT.NONE).setText("Route");
 628                         routeField = new Combo(routePanel, SWT.BORDER | SWT.READ_ONLY);
 629                         routeField.setItems(routeNames);
 630                         defaultWidth.applyTo(routeField);
 631
 632                         if (route != null) {
 633                                 int routeIndex = Arrays.indexOf(routeResources, route);
 634                                 routeField.select(routeIndex);
 635                         }
 636                         else {
 637                                 routeField.select(0);
 638                         }
 639
 640                         // Aggregate condition panel
 641                         aggregatePanel = new Composite(stackPanel, SWT.NONE);
 642                         GridLayoutFactory.swtDefaults().numColumns(2).applyTo(aggregatePanel);
 643
 644                         new Label(aggregatePanel, SWT.NONE).setText("Operator");
 645                         operatorField = new Combo(aggregatePanel, SWT.READ_ONLY);
 646                         operatorField.setItems("And", "Or");
 647                         operatorField.select(isConjunction ? 0 : 1);
 648
 649                         new Label(aggregatePanel, SWT.NONE).setText("Sub-conditions");
 650                         Composite buttons = new Composite(aggregatePanel, SWT.NONE);
 651                         RowLayoutFactory.swtDefaults().justify(true).fill(true).extendedMargins(0, 0, 0, 0).type(SWT.HORIZONTAL).applyTo(buttons);
 652
 653                         Button addButton = new Button(buttons, SWT.PUSH);
 654                         addButton.setText("Add");
 655                         Button removeButton = new Button(buttons, SWT.PUSH);
 656                         removeButton.setText("Remove");
 657                         Button editButton = new Button(buttons, SWT.PUSH);
 658                         editButton.setText("Edit");
 659
 660                         new Label(aggregatePanel, SWT.NONE);
 661                         subConditionField = new org.eclipse.swt.widgets.List(aggregatePanel, SWT.BORDER);
 662                         GridDataFactory.swtDefaults().hint(200, 150).applyTo(subConditionField);
 663                         if (subConditions != null) {
 664                                 Session session = Simantics.getSession();
 665                                 List<String> items = new ArrayList<>();
 666                                 for (Condition c : subConditions) {
 667                                         try {
 668                                                 items.add(ElementSelector.getExpression(session, c.resource));
 669                                         } catch (DatabaseException e1) {
 670                                                 LOGGER.error("Condition expression read failed", e1);
 671                                                 items.add("<Unknown expression>");
 672                                         }
 673                                 }
 674
 675                                 subConditionField.setItems(items.toArray(new String[items.size()]));
 676                         }
 677
 678                         addButton.addSelectionListener(new SelectionAdapter() {
 679                                 @Override
 680                                 public void widgetSelected(SelectionEvent e) {
 681                                         ConditionDialog conditionDialog = new ConditionDialog(getShell(), null);
 682                                         if (conditionDialog.open() == Window.OK) {
 683                                                 Condition condition;
 684                                                 try {
 685                                                         condition = conditionDialog.createCondition();
 686                                                         subConditions.add(condition);
 687
 688                                                         try {
 689                                                                 subConditionField.add(ElementSelector.getExpression(Simantics.getSession(), condition.resource));
 690                                                         } catch (DatabaseException e1) {
 691                                                                 LOGGER.error("Condition expression read failed", e1);
 692                                                                 subConditionField.add("<Unknown expression>");
 693                                                         }
 694                                                 } catch (DatabaseException e2) {
 695                                                         LOGGER.error("Create condition failed", e2);
 696                                                 }
 697                                         }
 698                                 }
 699                         });
 700
 701                         removeButton.addSelectionListener(new SelectionAdapter() {
 702                                 @Override
 703                                 public void widgetSelected(SelectionEvent e) {
 704                                         int index = subConditionField.getSelectionIndex();
 705                                         if (index >= 0) {
 706                                                 subConditionField.deselectAll();
 707                                                 subConditionField.remove(index);
 708                                                 subConditions.remove(index);
 709
 710                                                 if (index < subConditions.size())
 711                                                         subConditionField.setSelection(index);
 712                                         }
 713
 714                                         boolean selected = subConditionField.getSelectionIndex() >= 0;
 715                                         removeButton.setEnabled(selected);
 716                                         editButton.setEnabled(selected);
 717                                 }
 718                         });
 719
 720                         editButton.addSelectionListener(new SelectionAdapter() {
 721                                 @Override
 722                                 public void widgetSelected(SelectionEvent e) {
 723                                         int index = subConditionField.getSelectionIndex();
 724                                         if (index >= 0) {
 725                                                 Condition condition = subConditions.get(index);
 726                                                 ConditionDialog conditionDialog = new ConditionDialog(getShell(), condition);
 727                                                 if (conditionDialog.open() == Window.OK) {
 728                                                         try {
 729                                                                 condition = conditionDialog.createCondition();
 730                                                                 subConditions.set(index, condition);
 731
 732                                                                 try {
 733                                                                         subConditionField.setItem(index, ElementSelector.getExpression(Simantics.getSession(), condition.resource));
 734                                                                 } catch (DatabaseException e1) {
 735                                                                         LOGGER.error("Condition expression read failed", e1);
 736                                                                         subConditionField.setItem(index, "<Unknown expression>");
 737                                                                 }
 738                                                         } catch (DatabaseException e2) {
 739                                                                 LOGGER.error("Create condition failed", e2);
 740                                                         }
 741                                                 }
 742                                         }
 743                                 }
 744                         });
 745
 746                         subConditionField.addSelectionListener(new SelectionAdapter() {
 747                                 @Override
 748                                 public void widgetSelected(SelectionEvent e) {
 749                                         boolean selected = subConditionField.getSelectionIndex() >= 0;
 750                                         removeButton.setEnabled(selected);
 751                                         editButton.setEnabled(selected);
 752                                 }
 753                         });
 754
 755                         // Stack layout update
 756                         typeField.addSelectionListener(new SelectionAdapter() {
 757                                 @Override
 758                                 public void widgetSelected(SelectionEvent e) {
 759                                         updateStack();
 760                                 }
 761                         });
 762
 763                         updateStack();
 764
 765                         return content;
 766                 }
 767
 768                 @Override
 769                 protected void okPressed() {
 770                         isInverse = inverseField.getSelection();
 771
 772                         switch (typeIndex) {
 773                         case 0: // Property condition
 774                                 propertyName = propertyNameField.getText();
 775                                 try {
 776                                         String lowerLimitText = lowerLimitField.getText();
 777                                         lowerLimit = lowerLimitText.equals("") ? null : Double.valueOf(lowerLimitText);
 778                                         String upperLimitText = upperLimitField.getText();
 779                                         upperLimit = upperLimitText.equals("") ? null : Double.valueOf(upperLimitText);
 780                                 }
 781                                 catch (NumberFormatException e) {
 782                                         ErrorDialog.openError(getShell(), "Error", "Invalid numeric value: " + e.getMessage(), new Status(OK, "org.simantics.district.selection.ui", e.getMessage()));
 783                                         return;
 784                                 }
 785                                 break;
 786                         case 1: { // Region condition
 787                                 int selectionIndex = regionField.getSelectionIndex();
 788                                 if (selectionIndex < 0) {
 789                                         ErrorDialog.openError(getShell(), "Error", "Please select a region", new Status(OK, "org.simantics.district.selection.ui", "No region selection"));
 790                                         return;
 791                                 }
 792                                 region = regionResources[selectionIndex];
 793                                 break;
 794                         }
 795                         case 2: // Route condition
 796                                 route = routeResources[routeField.getSelectionIndex()];
 797                                 break;
 798                         case 3: // Aggregate condition
 799                                 isConjunction = operatorField.getSelectionIndex() == 0;
 800                                 break;
 801                         }
 802
 803                         super.okPressed();
 804                 }
 805
 806                 protected Condition createCondition() throws DatabaseException {
 807                         if (isInverse && !(typeIndex == 3 && !isConjunction)) {
 808                                 Resource resource0 = createCondition0();
 809
 810                                 // Create a negation
 811                                 Resource resource = Simantics.getSession().syncRequest(new WriteResult<Resource>() {
 812                                         @Override
 813                                         public Resource perform(WriteGraph graph) throws DatabaseException {
 814                                                 ElementSelectionResource ES = ElementSelectionResource.getInstance(graph);
 815                                                 Layer0 L0 = Layer0.getInstance(graph);
 816
 817                                                 Resource r = graph.newResource();
 818                                                 graph.claim(r, L0.InstanceOf, ES.Negation);
 819                                                 graph.claim(r, ES.HasSubcondition, resource0);
 820                                                 return r;
 821                                         }
 822                                 });
 823
 824                                 return ElementSelector.getCondition(Simantics.getSession(), resource);
 825                         }
 826                         else {
 827                                 return ElementSelector.getCondition(Simantics.getSession(), createCondition0());
 828                         }
 829                 }
 830
 831                 private Resource createCondition0() throws DatabaseException {
 832                         switch (typeIndex) {
 833                         case 0: return createPropertyCondition();
 834                         case 1: return createRegionCondition();
 835                         case 2: return createRouteCondition();
 836                         case 3: return createAggregateCondition();
 837                         default: throw new IllegalStateException("Invalid condition type code " + typeIndex);
 838                         }
 839                 }
 840
 841                 private Resource createPropertyCondition() throws DatabaseException {
 842                         return Simantics.getSession().syncRequest(new WriteResult<Resource>() {
 843                                 @Override
 844                                 public Resource perform(WriteGraph graph) throws DatabaseException {
 845                                         ElementSelectionResource ES = ElementSelectionResource.getInstance(graph);
 846                                         Layer0 L0 = Layer0.getInstance(graph);
 847
 848                                         Resource r = graph.newResource();
 849                                         graph.claim(r, L0.InstanceOf, ES.PropertyCondition);
 850                                         graph.claimLiteral(r, ES.PropertyCondition_HasPropertyName, propertyName);
 851                                         if (lowerLimit != null)
 852                                                 graph.claimLiteral(r, ES.PropertyCondition_HasLowerLimit, L0.Double, lowerLimit);
 853                                         if (upperLimit != null)
 854                                                 graph.claimLiteral(r, ES.PropertyCondition_HasUpperLimit, L0.Double, upperLimit);
 855
 856                                         return r;
 857                                 }
 858                         });
 859                 }
 860
 861                 private Resource createAggregateCondition() throws DatabaseException {
 862                         return Simantics.getSession().syncRequest(new WriteResult<Resource>() {
 863                                 @Override
 864                                 public Resource perform(WriteGraph graph) throws DatabaseException {
 865                                         ElementSelectionResource ES = ElementSelectionResource.getInstance(graph);
 866                                         Layer0 L0 = Layer0.getInstance(graph);
 867
 868                                         Resource r;
 869                                         if (existingResource != null) {
 870                                                 // Reuse existing resource
 871                                                 r = existingResource;
 872                                                 // Clear any previous statements
 873                                                 graph.deny(existingResource);
 874                                         }
 875                                         else {
 876                                                 r = graph.newResource();
 877                                         }
 878
 879                                         Resource type;
 880                                         type = isConjunction ? ES.Conjunction : isInverse ? ES.Negation : ES.Disjunction;
 881
 882                                         graph.claim(r, L0.InstanceOf, type);
 883                                         for (Condition c : subConditions) {
 884                                                 graph.claim(r, ES.HasSubcondition, c.resource);
 885                                         }
 886
 887                                         return r;
 888                                 }
 889                         });
 890                 }
 891
 892                 private Resource createRouteCondition() throws DatabaseException {
 893                         return Simantics.getSession().syncRequest(new WriteResult<Resource>() {
 894                                 @Override
 895                                 public Resource perform(WriteGraph graph) throws DatabaseException {
 896                                         ElementSelectionResource ES = ElementSelectionResource.getInstance(graph);
 897                                         Layer0 L0 = Layer0.getInstance(graph);
 898
 899                                         Resource r = graph.newResource();
 900                                         graph.claim(r, L0.InstanceOf, ES.RouteCondition);
 901                                         graph.claim(r, ES.RouteCondition_HasRoute, route);
 902                                         return r;
 903                                 }
 904                         });
 905                 }
 906
 907                 private Resource createRegionCondition() throws DatabaseException {
 908                         return Simantics.getSession().syncRequest(new WriteResult<Resource>() {
 909                                 @Override
 910                                 public Resource perform(WriteGraph graph) throws DatabaseException {
 911                                         ElementSelectionResource ES = ElementSelectionResource.getInstance(graph);
 912                                         Layer0 L0 = Layer0.getInstance(graph);
 913
 914                                         Resource r = graph.newResource();
 915                                         graph.claim(r, L0.InstanceOf, ES.RegionCondition);
 916                                         graph.claim(r, ES.RegionCondition_HasRegion, region);
 917                                         return r;
 918                                 }
 919                         });
 920                 }
 921
 922                 private void updateStack() {
 923                         typeIndex = typeField.getSelectionIndex();
 924                         switch (typeIndex) {
 925                         case 0: stack.topControl = propertyPanel; break;
 926                         case 1: stack.topControl = regionPanel; break;
 927                         case 2: stack.topControl = routePanel; break;
 928                         case 3: stack.topControl = aggregatePanel; break;
 929                         }
 930
 931                         stackPanel.layout();
 932                 }
 933         }
 934 }