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

   1 package org.simantics.modeling.ui.componentTypeEditor;
   2
   3 import java.util.ArrayList;
   4 import java.util.Collection;
   5 import java.util.Collections;
   6 import java.util.HashMap;
   7 import java.util.List;
   8 import java.util.Map;
   9 import java.util.concurrent.ScheduledFuture;
  10 import java.util.concurrent.TimeUnit;
  11 import java.util.regex.Matcher;
  12 import java.util.regex.Pattern;
  13
  14 import org.eclipse.jface.dialogs.IDialogConstants;
  15 import org.eclipse.jface.dialogs.IMessageProvider;
  16 import org.eclipse.jface.layout.GridDataFactory;
  17 import org.eclipse.jface.layout.GridLayoutFactory;
  18 import org.eclipse.osgi.util.NLS;
  19 import org.eclipse.swt.SWT;
  20 import org.eclipse.swt.custom.StyledText;
  21 import org.eclipse.swt.custom.TableEditor;
  22 import org.eclipse.swt.events.SelectionAdapter;
  23 import org.eclipse.swt.events.SelectionEvent;
  24 import org.eclipse.swt.graphics.Point;
  25 import org.eclipse.swt.graphics.Rectangle;
  26 import org.eclipse.swt.widgets.Button;
  27 import org.eclipse.swt.widgets.Combo;
  28 import org.eclipse.swt.widgets.Composite;
  29 import org.eclipse.swt.widgets.Display;
  30 import org.eclipse.swt.widgets.Event;
  31 import org.eclipse.swt.widgets.Label;
  32 import org.eclipse.swt.widgets.Shell;
  33 import org.eclipse.swt.widgets.Table;
  34 import org.eclipse.swt.widgets.TableItem;
  35 import org.eclipse.swt.widgets.Text;
  36 import org.eclipse.ui.forms.widgets.Form;
  37 import org.eclipse.ui.forms.widgets.FormToolkit;
  38 import org.simantics.Simantics;
  39 import org.simantics.databoard.Bindings;
  40 import org.simantics.databoard.type.NumberType;
  41 import org.simantics.databoard.units.internal.library.UnitLibrary;
  42 import org.simantics.databoard.util.Limit;
  43 import org.simantics.databoard.util.Range;
  44 import org.simantics.databoard.util.RangeException;
  45 import org.simantics.db.ReadGraph;
  46 import org.simantics.db.RequestProcessor;
  47 import org.simantics.db.Resource;
  48 import org.simantics.db.Statement;
  49 import org.simantics.db.WriteGraph;
  50 import org.simantics.db.common.NamedResource;
  51 import org.simantics.db.common.request.IndexRoot;
  52 import org.simantics.db.common.request.ResourceRead;
  53 import org.simantics.db.common.request.WriteRequest;
  54 import org.simantics.db.exception.DatabaseException;
  55 import org.simantics.db.function.DbConsumer;
  56 import org.simantics.db.layer0.QueryIndexUtils;
  57 import org.simantics.layer0.Layer0;
  58 import org.simantics.modeling.userComponent.ComponentTypeCommands;
  59 import org.simantics.scl.runtime.function.Function2;
  60 import org.simantics.scl.runtime.function.Function4;
  61 import org.simantics.utils.threads.ThreadUtils;
  62 import org.simantics.utils.ui.ErrorLogger;
  63
  64 public class ComponentTypeViewerData {
  65     /**
  66      * Used to validate property names.
  67      */
  68     public static final Pattern PROPERTY_NAME_PATTERN =
  69             Pattern.compile("([a-z]|_[0-9a-zA-Z_])[0-9a-zA-Z_]*"); //$NON-NLS-1$
  70
  71     public static final String[] PROPERTY_TYPE_SUGGESTIONS = new String[] {
  72         "Double", //$NON-NLS-1$
  73         "Integer", //$NON-NLS-1$
  74         "Float", //$NON-NLS-1$
  75         "String", //$NON-NLS-1$
  76         "Boolean", //$NON-NLS-1$
  77         "Long", //$NON-NLS-1$
  78         "[Double]", //$NON-NLS-1$
  79         "[Integer]", //$NON-NLS-1$
  80         "[Float]", //$NON-NLS-1$
  81         "[String]", //$NON-NLS-1$
  82         "[Boolean]", //$NON-NLS-1$
  83         "[Long]", //$NON-NLS-1$
  84         "Vector Double", //$NON-NLS-1$
  85         "Vector Integer", //$NON-NLS-1$
  86         "Vector Float", //$NON-NLS-1$
  87         "Vector String", //$NON-NLS-1$
  88         "Vector Boolean", //$NON-NLS-1$
  89         "Vector Long" //$NON-NLS-1$
  90     };
  91
  92     public Resource componentType;
  93     public FormToolkit tk;
  94     public Form form;
  95     public UnitLibrary unitLibrary = UnitLibrary.createDefault();
  96     public boolean readOnly;
  97     public NamedResource[] connectionPoints;
  98     public ComponentTypeViewerPropertyInfo[] properties;
  99
 100     public ComponentTypeViewerData(FormToolkit tk, Resource componentType, Form form) {
 101         this.tk = tk;
 102         this.componentType = componentType;
 103         this.form = form;
 104     }
 105
 106     public void editName(Table table, TableEditor editor, final ComponentTypeViewerPropertyInfo propertyInfo, TableItem selectedItem, int column,
 107             Pattern namePattern) {
 108         editName(table, editor, propertyInfo, selectedItem, column, namePattern, null);
 109     }
 110
 111     public void editName(Table table, TableEditor editor, final ComponentTypeViewerPropertyInfo propertyInfo, TableItem selectedItem, int column,
 112             Pattern namePattern, DbConsumer<WriteGraph> extraWriter) {
 113         editName(table, editor, propertyInfo, selectedItem, column,
 114                 null,
 115                 (pInfo, name) -> validatePropertyName(pInfo, name, namePattern),
 116                 extraWriter);
 117     }
 118
 119     public void editName(Table table, TableEditor editor, final ComponentTypeViewerPropertyInfo propertyInfo, TableItem selectedItem, int column,
 120             Function2<ComponentTypeViewerPropertyInfo, String, String> nameFilter, Pattern namePattern, DbConsumer<WriteGraph> extraWriter) {
 121         editName(table, editor, propertyInfo, selectedItem, column, nameFilter,
 122                 (pInfo, name) -> validatePropertyName(pInfo, name, namePattern),
 123                 extraWriter);
 124     }
 125
 126     public void editName(Table table, TableEditor editor, ComponentTypeViewerPropertyInfo propertyInfo, TableItem selectedItem, int column,
 127             Function2<ComponentTypeViewerPropertyInfo, String, String> nameValidator)
 128     {
 129         editName(table, editor, propertyInfo, selectedItem, column, nameValidator, null);
 130     }
 131
 132     public void editName(Table table, TableEditor editor, final ComponentTypeViewerPropertyInfo propertyInfo, TableItem selectedItem, int column,
 133             Function2<ComponentTypeViewerPropertyInfo, String, String> nameValidator, DbConsumer<WriteGraph> extraWriter) {
 134         editName(table, editor, propertyInfo, selectedItem, column, null, nameValidator, extraWriter);
 135     }
 136
 137     public void editName(
 138             Table table,
 139             TableEditor editor,
 140             final ComponentTypeViewerPropertyInfo propertyInfo,
 141             TableItem selectedItem,
 142             int column,
 143             Function2<ComponentTypeViewerPropertyInfo, String, String> nameFilter,
 144             Function2<ComponentTypeViewerPropertyInfo, String, String> nameValidator,
 145             DbConsumer<WriteGraph> extraWriter) {
 146         int extraStyle = propertyInfo.immutable ? SWT.READ_ONLY : 0;
 147         final Text text = new Text(table, SWT.NONE | extraStyle);
 148         org.eclipse.swt.widgets.Listener listener =
 149                 new org.eclipse.swt.widgets.Listener() {
 150             @Override
 151             public void handleEvent(Event e) {
 152                 if (e.type == SWT.Dispose) {
 153                     form.setMessage(null);
 154                     return;
 155                 } else if (e.type == SWT.Verify) {
 156                     // Filter input if necessary
 157                     e.text = nameFilter != null ? nameFilter.apply(propertyInfo, e.text) : e.text;
 158                     return;
 159                 } else if (e.type == SWT.Modify) {
 160                     // validate current name
 161                     String error = nameValidator.apply(propertyInfo, text.getText());
 162                     if (error != null) {
 163                         text.setBackground(text.getDisplay().getSystemColor(SWT.COLOR_RED));
 164                         form.setMessage(error, IMessageProvider.ERROR);
 165                     } else {
 166                         text.setBackground(null);
 167                         form.setMessage(null);
 168                     }
 169                     return;
 170                 } else if (e.type == SWT.Traverse) {
 171                     if (e.detail == SWT.TRAVERSE_ESCAPE) {
 172                         text.dispose();
 173                         e.doit = false;
 174                         return;
 175                     }
 176                     if (e.detail == SWT.TRAVERSE_ARROW_NEXT || e.detail == SWT.TRAVERSE_ARROW_PREVIOUS || e.detail == SWT.TRAVERSE_MNEMONIC)
 177                         return;
 178                     e.doit = false;
 179                 }
 180                 final String newValue = text.getText();
 181                 text.dispose();
 182
 183                 String error = nameValidator.apply(propertyInfo, newValue);
 184                 if (error != null)
 185                     return;
 186
 187                 if (propertyInfo.immutable)
 188                     return;
 189
 190                 Simantics.getSession().async(new WriteRequest() {
 191                     @Override
 192                     public void perform(WriteGraph graph)
 193                             throws DatabaseException {
 194                         graph.markUndoPoint();
 195                         Layer0 L0 = Layer0.getInstance(graph);
 196                         String prevName = graph.getPossibleRelatedValue2(propertyInfo.resource, L0.HasName);
 197                         String oldCamelCasedLabel = prevName != null ? ComponentTypeCommands.camelCaseNameToLabel(prevName) : ""; //$NON-NLS-1$
 198                         String oldLabel = graph.getPossibleRelatedValue(propertyInfo.resource, L0.HasLabel);
 199                         boolean setLabel = oldLabel == null
 200                                 || oldLabel.isEmpty()
 201                                 || oldCamelCasedLabel.isEmpty()
 202                                 || oldCamelCasedLabel.equals(oldLabel);
 203
 204                         ComponentTypeCommands.rename(graph, propertyInfo.resource, newValue);
 205                         if (setLabel)
 206                             ComponentTypeCommands.setLabel(graph, propertyInfo.resource, ComponentTypeCommands.camelCaseNameToLabel(newValue));
 207
 208                         if (extraWriter != null)
 209                             extraWriter.accept(graph);
 210                     }
 211                 });
 212             }
 213         };
 214         if (nameFilter != null)
 215             text.addListener(SWT.Verify, listener);
 216         text.addListener(SWT.Modify, listener);
 217         text.addListener(SWT.Deactivate, listener);
 218         text.addListener(SWT.Traverse, listener);
 219         text.addListener(SWT.Dispose, listener);
 220
 221         text.setText(selectedItem.getText(column));
 222         text.selectAll();
 223         text.setFocus();
 224
 225         editor.setEditor(text, selectedItem, column);
 226     }
 227
 228     private static class TypeDefinitionMapRequest extends ResourceRead<Map<String,Resource>> {
 229         public TypeDefinitionMapRequest(Resource resource) {
 230             super(resource);
 231         }
 232
 233         @Override
 234         public Map<String,Resource> perform(ReadGraph graph) throws DatabaseException {
 235             Layer0 L0 = Layer0.getInstance(graph);
 236             Map<String,Resource> result = new HashMap<>();
 237             for(Resource valueType : QueryIndexUtils.searchByType(graph, resource, L0.ValueType)) {
 238                 Collection<Statement> stms = graph.getAssertedStatements(valueType, L0.HasValueType);
 239                 if(stms.size() == 1) {
 240                     String sclValueType = graph.getValue(stms.iterator().next().getObject(), Bindings.STRING);
 241                     result.put(sclValueType, valueType);
 242                 }
 243             }
 244             return result;
 245         }
 246     }
 247
 248     public void editType(Table table, TableEditor editor, final ComponentTypeViewerPropertyInfo propertyInfo, TableItem selectedItem, int column, String range, final boolean convertDefaultValue) {
 249         int extraStyle = propertyInfo.immutable ? SWT.READ_ONLY : 0;
 250         final Combo combo = new Combo(table, SWT.NONE | extraStyle);
 251         combo.setText(selectedItem.getText(column));
 252         for(String suggestion : PROPERTY_TYPE_SUGGESTIONS)
 253             combo.add(suggestion);
 254         org.eclipse.swt.widgets.Listener listener =
 255                 new org.eclipse.swt.widgets.Listener() {
 256             @Override
 257             public void handleEvent(Event e) {
 258                 if(e.type == SWT.Traverse) {
 259                     if (e.detail == SWT.TRAVERSE_ESCAPE) {
 260                         combo.dispose();
 261                         e.doit = false;
 262                         return;
 263                     }
 264                     if (e.detail == SWT.TRAVERSE_ARROW_NEXT
 265                             || e.detail == SWT.TRAVERSE_ARROW_PREVIOUS
 266                             || e.detail == SWT.TRAVERSE_MNEMONIC)
 267                         return;
 268                 }
 269                 final String newValue = combo.getText();
 270                 if (e.type == SWT.Traverse) {
 271                     e.doit = false;
 272                 }
 273                 combo.dispose();
 274
 275                 if (propertyInfo.immutable)
 276                     return;
 277
 278
 279                 Simantics.getSession().async(new WriteRequest() {
 280                     @Override
 281                     public void perform(WriteGraph graph)
 282                             throws DatabaseException {
 283                         graph.markUndoPoint();
 284
 285                         Resource root = graph.syncRequest(new IndexRoot(componentType));
 286                         Map<String,Resource> typeDefinitionMap = graph.syncRequest(new TypeDefinitionMapRequest(root));
 287                         Resource possibleGraphType = typeDefinitionMap.get(newValue);
 288
 289                         ComponentTypeCommands.editType(graph, componentType, propertyInfo.resource, convertDefaultValue, newValue, possibleGraphType);
 290                         if (range != null) ComponentTypeCommands.setRange(graph, componentType, propertyInfo.resource, range);
 291                     }
 292                 });
 293             }
 294         };
 295         combo.setFocus();
 296         editor.setEditor(combo, selectedItem, column);
 297         combo.addListener(SWT.FocusOut, listener);
 298         combo.addListener(SWT.Traverse, listener);
 299     }
 300
 301     public void editUnit(Table table, TableEditor editor, final ComponentTypeViewerPropertyInfo propertyInfo, TableItem selectedItem, int column) {
 302         // Disallow unit editing for non-numeric configuration properties
 303         if (propertyInfo.numberType == null && propertyInfo.sectionSpecificData == null)
 304             return;
 305
 306         int extraStyle = propertyInfo.immutable ? SWT.READ_ONLY : 0;
 307         final Combo combo = new Combo(table, SWT.NONE | extraStyle);
 308         String initialValue = selectedItem.getText(column);
 309         List<String> units = new ArrayList<>( unitLibrary.getUnits() );
 310         Collections.sort(units, String.CASE_INSENSITIVE_ORDER);
 311         int i = -1;
 312         int selected = -1;
 313         for (String unit : units) {
 314             combo.add(unit);
 315             if (unit.equals(initialValue))
 316                 combo.select(i);
 317         }
 318         if (selected == -1)
 319             combo.setText(initialValue);
 320
 321         org.eclipse.swt.widgets.Listener listener =
 322                 new org.eclipse.swt.widgets.Listener() {
 323             @Override
 324             public void handleEvent(Event e) {
 325                 if(e.type == SWT.Traverse) {
 326                     if (e.detail == SWT.TRAVERSE_ESCAPE) {
 327                         combo.dispose();
 328                         e.doit = false;
 329                         return;
 330                     }
 331                     if (e.detail == SWT.TRAVERSE_ARROW_NEXT
 332                             || e.detail == SWT.TRAVERSE_ARROW_PREVIOUS
 333                             || e.detail == SWT.TRAVERSE_MNEMONIC)
 334                         return;
 335                 }
 336                 final String newValue = combo.getText();
 337                 if(e.type == SWT.Traverse) {
 338                     e.doit = false;
 339                 }
 340                 combo.dispose();
 341
 342                 if (propertyInfo.immutable)
 343                     return;
 344
 345                 Simantics.getSession().async(new WriteRequest() {
 346                     @Override
 347                     public void perform(WriteGraph graph)
 348                             throws DatabaseException {
 349                         graph.markUndoPoint();
 350                         ComponentTypeCommands.setUnit(graph, componentType, propertyInfo.resource, newValue);
 351                     }
 352                 });
 353             }
 354         };
 355         combo.setFocus();
 356         editor.setEditor(combo, selectedItem, column);
 357         combo.addListener(SWT.Deactivate, listener);
 358         combo.addListener(SWT.Traverse, listener);
 359     }
 360
 361     public void editValue(Table table, TableEditor editor,
 362             final ComponentTypeViewerPropertyInfo propertyInfo,
 363             TableItem selectedItem, int column,
 364             final StringWriter writer,
 365             final Function4<RequestProcessor, Resource, Resource, String, String> validator)
 366     {
 367         int extraStyle = writer == null ? SWT.READ_ONLY : 0;
 368         final Text text = new Text(table, SWT.NONE | extraStyle);
 369         text.setText(selectedItem.getText(column));
 370         org.eclipse.swt.widgets.Listener listener =
 371                 new org.eclipse.swt.widgets.Listener() {
 372             @Override
 373             public void handleEvent(Event e) {
 374                 if(e.type == SWT.Traverse) {
 375                     if (e.detail == SWT.TRAVERSE_ESCAPE) {
 376                         text.dispose();
 377                         e.doit = false;
 378                         return;
 379                     }
 380                     if (e.detail == SWT.TRAVERSE_ARROW_NEXT
 381                             || e.detail == SWT.TRAVERSE_ARROW_PREVIOUS
 382                             || e.detail == SWT.TRAVERSE_MNEMONIC)
 383                         return;
 384                 }
 385                 final String newValue = text.getText();
 386                 if(e.type == SWT.Traverse) {
 387                     e.doit = false;
 388                 }
 389                 text.dispose();
 390
 391                 if (validator != null) {
 392                     String error = validator.apply(Simantics.getSession(), componentType, propertyInfo.resource, newValue);
 393                     if (error != null)
 394                         return;
 395                 }
 396
 397                 if (writer != null) {
 398                     Simantics.getSession().async(new WriteRequest() {
 399                         @Override
 400                         public void perform(WriteGraph graph) throws DatabaseException {
 401                             writer.perform(graph, newValue);
 402                         }
 403                     });
 404                 }
 405             }
 406         };
 407         text.selectAll();
 408         text.setFocus();
 409         editor.setEditor(text, selectedItem, column);
 410         text.addListener(SWT.FocusOut, listener);
 411         text.addListener(SWT.Traverse, listener);
 412
 413         if (validator != null) {
 414             org.eclipse.swt.widgets.Listener validationListener = new org.eclipse.swt.widgets.Listener() {
 415
 416                 private ScheduledFuture<?> future;
 417
 418                 @Override
 419                 public void handleEvent(Event e) {
 420                     final String newValue = text.getText();
 421                     if (future != null && !future.isCancelled())
 422                         future.cancel(true);
 423                     future = ThreadUtils.getNonBlockingWorkExecutor().schedule(() -> {
 424                         String error = validator.apply(Simantics.getSession(), componentType, propertyInfo.resource, newValue);
 425                         if (!text.isDisposed()) {
 426                             text.getDisplay().asyncExec(() -> {
 427                                 if (!text.isDisposed()) {
 428                                     if (error != null) {
 429                                         text.setBackground(text.getDisplay().getSystemColor(SWT.COLOR_RED));
 430                                         text.setToolTipText(error);
 431                                         return;
 432                                     } else {
 433                                         text.setBackground(null);
 434                                         text.setToolTipText(null);
 435                                     }
 436                                 }
 437
 438                             });
 439                         }
 440                     }, 500, TimeUnit.MILLISECONDS);
 441                 }
 442             };
 443             text.addListener(SWT.Modify, validationListener);
 444         }
 445     }
 446
 447     private Range parseRange(NumberType numberType, String minStr, String maxStr, boolean lowInclusive, boolean highInclusive) throws RangeException {
 448         try {
 449             String rangeStr = (lowInclusive ? "[" : "(")  + minStr + ".." + maxStr + (highInclusive ? "]" : ")"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$
 450             return Range.valueOf(rangeStr);
 451         } catch (IllegalArgumentException e) {
 452             // Limits are invalid
 453             throw new RangeException(e.getMessage(), e);
 454         }
 455     }
 456
 457     private static Combo createRangeInclusionCombo(Composite parent, boolean inclusive) {
 458         Combo rng = new Combo(parent, SWT.READ_ONLY);
 459         rng.add(Messages.ComponentTypeViewerData_Inclusive);
 460         rng.add(Messages.ComponentTypeViewerData_Exclusive);
 461         rng.select(inclusive ? 0 : 1);
 462         return rng;
 463     }
 464
 465     protected void editRange(Table table, TableEditor editor, final ComponentTypeViewerPropertyInfo propertyInfo, TableItem selectedItem, Rectangle selectedItemBounds, int column) {
 466         // Disallow range editing when the property is not numeric
 467         if (propertyInfo.numberType == null)
 468             return;
 469
 470         int extraTextStyle = propertyInfo.immutable ? SWT.READ_ONLY : 0;
 471
 472         // Parse initial range value
 473         Range range = null;
 474         String rangeStr = selectedItem.getText(column);
 475         try {
 476             range = Range.valueOf(rangeStr);
 477         } catch (RangeException ex) {
 478             range = new Range(Limit.nolimit(), Limit.nolimit());
 479         }
 480
 481         final Shell shell = new Shell(table.getShell(), SWT.ON_TOP);
 482         GridLayoutFactory.fillDefaults().applyTo(shell);
 483
 484         Composite composite = new Composite(shell, SWT.NONE);
 485         GridDataFactory.fillDefaults().grab(true, true).applyTo(composite);
 486         GridLayoutFactory.swtDefaults().numColumns(3).applyTo(composite);
 487
 488         Label low = new Label(composite, SWT.NONE);
 489         low.setText(Messages.ComponentTypeViewerData_MinimumValue);
 490         final Text lowText = new Text(composite, SWT.BORDER | extraTextStyle);
 491         GridDataFactory.fillDefaults().grab(true, false).hint(100, SWT.DEFAULT).applyTo(lowText);
 492         final Combo lowSelector = createRangeInclusionCombo(composite, !range.getLower().isExclusive());
 493         Label high = new Label(composite, SWT.NONE);
 494         high.setText(Messages.ComponentTypeViewerData_MaximumValue);
 495         final Text highText = new Text(composite, SWT.BORDER | extraTextStyle);
 496         GridDataFactory.fillDefaults().grab(true, false).hint(100, SWT.DEFAULT).applyTo(highText);
 497         final Combo highSelector = createRangeInclusionCombo(composite, !range.getUpper().isExclusive());
 498
 499         Composite buttonComposite = new Composite(shell, SWT.NONE);
 500         GridDataFactory.fillDefaults().grab(true, false).align(SWT.TRAIL, SWT.FILL).applyTo(buttonComposite);
 501         GridLayoutFactory.swtDefaults().numColumns(2).equalWidth(true).applyTo(buttonComposite);
 502
 503         Button ok = new Button(buttonComposite, SWT.NONE);
 504         ok.setText(IDialogConstants.OK_LABEL);
 505         GridDataFactory.swtDefaults().align(SWT.FILL, SWT.CENTER).applyTo(ok);
 506         Button cancel = new Button(buttonComposite, SWT.NONE);
 507         cancel.setText(IDialogConstants.CANCEL_LABEL);
 508         GridDataFactory.swtDefaults().align(SWT.FILL, SWT.CENTER).applyTo(ok);
 509
 510         if (range.getLower().getValue() != null)
 511             lowText.setText(range.getLower().getValue().toString());
 512         if (range.getUpper().getValue() != null)
 513             highText.setText(range.getUpper().getValue().toString());
 514
 515         shell.addListener(SWT.Deactivate, new org.eclipse.swt.widgets.Listener() {
 516             @Override
 517             public void handleEvent(Event event) {
 518                 shell.dispose();
 519             }
 520         });
 521
 522         ok.addSelectionListener(new SelectionAdapter() {
 523             public void widgetSelected(SelectionEvent e) {
 524                 try {
 525                     final Range newRange = parseRange(propertyInfo.numberType,
 526                             lowText.getText().trim(),
 527                             highText.getText().trim(),
 528                             lowSelector.getSelectionIndex() == 0 ? true : false,
 529                             highSelector.getSelectionIndex() == 0 ? true : false);
 530
 531                     shell.dispose();
 532
 533                     if (propertyInfo.immutable)
 534                         return;
 535
 536                     Simantics.getSession().async(new WriteRequest() {
 537                         @Override
 538                         public void perform(WriteGraph graph)
 539                                 throws DatabaseException {
 540                             graph.markUndoPoint();
 541                             ComponentTypeCommands.setRange(graph, componentType, propertyInfo.resource, newRange == null ? null : newRange.toString());
 542                         }
 543                     });
 544                 } catch (RangeException ex) {
 545                     ErrorLogger.defaultLogError(ex);
 546                 }
 547             }
 548         });
 549         cancel.addSelectionListener(new SelectionAdapter() {
 550             public void widgetSelected(SelectionEvent e) {
 551                 shell.dispose();
 552             }
 553         });
 554
 555         shell.pack();
 556         Point size = shell.getSize();
 557
 558         Display display = table.getDisplay();
 559         Rectangle clientArea = display.getClientArea();
 560         Point bt = table.toDisplay(selectedItemBounds.x, selectedItemBounds.y);
 561         Rectangle b = selectedItemBounds;
 562         b.x = bt.x;
 563         b.y = bt.y;
 564         b.width = size.x;
 565         b.height = size.y;
 566         if ((b.x + b.width) > clientArea.width)
 567             b.x -= b.x + b.width - clientArea.width;
 568         if (b.height > clientArea.height)
 569             b.height = clientArea.height;
 570         if ((b.y + b.height) > clientArea.height)
 571             b.y -= b.y + b.height - clientArea.height;
 572
 573         shell.setBounds(selectedItemBounds);
 574         shell.open();
 575     }
 576
 577     public void editMultilineText(Table table, TableEditor editor,
 578             final ComponentTypeViewerPropertyInfo propertyInfo, TableItem selectedItem,
 579             Rectangle selectedItemBounds, int column, final StringWriter writer)
 580     {
 581         final Shell shell = new Shell(table.getShell(), SWT.ON_TOP);
 582         GridLayoutFactory.fillDefaults().spacing(0, 0).applyTo(shell);
 583         final StyledText text = new StyledText(shell, SWT.MULTI | SWT.WRAP | SWT.V_SCROLL | (propertyInfo.immutable ? SWT.READ_ONLY : 0));
 584         GridDataFactory.fillDefaults().grab(true, true).applyTo(text);
 585         text.setText(selectedItem.getText(column));
 586         org.eclipse.swt.widgets.Listener listener =
 587                 new org.eclipse.swt.widgets.Listener() {
 588             @Override
 589             public void handleEvent(Event e) {
 590                 final String newValue = text.getText();
 591
 592                 if (e.type == SWT.Traverse) {
 593                     if (e.detail == SWT.TRAVERSE_ESCAPE) {
 594                         shell.dispose();
 595                         e.doit = false;
 596                         return;
 597                     }
 598                     if (e.detail == SWT.TRAVERSE_ARROW_NEXT
 599                             || e.detail == SWT.TRAVERSE_ARROW_PREVIOUS
 600                             || e.detail == SWT.TRAVERSE_MNEMONIC)
 601                         return;
 602                     if ((e.stateMask & SWT.CTRL) == 0)
 603                         return;
 604                     e.doit = false;
 605                 }
 606
 607                 shell.dispose();
 608
 609                 if (propertyInfo.immutable)
 610                     return;
 611
 612                 if (writer != null) {
 613                     Simantics.getSession().async(new WriteRequest() {
 614                         @Override
 615                         public void perform(WriteGraph graph) throws DatabaseException {
 616                             writer.perform(graph, newValue);
 617                         }
 618                     });
 619                 }
 620             }
 621         };
 622
 623         String helpText = propertyInfo.immutable ? Messages.ComponentTypeViewerData_ESCToClose : Messages.ComponentTypeViewerData_CtrlEnterApplyChanges;
 624         Label help = tk.createLabel(shell, helpText, SWT.BORDER | SWT.FLAT);
 625         GridDataFactory.fillDefaults().grab(true, false).align(SWT.FILL, SWT.CENTER).applyTo(help);
 626         help.setForeground( tk.getColors().createColor( "fg", tk.getColors().getSystemColor(SWT.COLOR_LIST_SELECTION) ) ); //$NON-NLS-1$
 627
 628         Display display = table.getDisplay();
 629         Rectangle clientArea = display.getClientArea();
 630         Point bt = table.toDisplay(selectedItemBounds.x, selectedItemBounds.y);
 631         Rectangle b = selectedItemBounds;
 632         b.x = bt.x;
 633         b.y = bt.y;
 634         b.height = 200;
 635         if ((b.x + b.width) > clientArea.width)
 636             b.x -= b.x + b.width - clientArea.width;
 637         if (b.height > clientArea.height)
 638             b.height = clientArea.height;
 639         if ((b.y + b.height) > clientArea.height)
 640             b.y -= b.y + b.height - clientArea.height;
 641
 642         shell.setBounds(selectedItemBounds);
 643         shell.open();
 644
 645         text.selectAll();
 646         text.setFocus();
 647
 648         text.addListener(SWT.Traverse, listener);
 649         shell.addListener(SWT.Deactivate, listener);
 650     }
 651
 652     private String validatePropertyName(ComponentTypeViewerPropertyInfo propertyInfo, String propertyName, Pattern namePattern) {
 653         if (propertyName.equals(propertyInfo.name))
 654             return null;
 655         for (ComponentTypeViewerPropertyInfo info : properties) {
 656             if (propertyName.equals(info.name))
 657                 return NLS.bind(Messages.ComponentTypeViewerData_PropertyNameInUse, propertyName);
 658         }
 659         for (NamedResource cp : connectionPoints) {
 660             if (propertyName.equals(cp.getName()))
 661                 return NLS.bind(Messages.ComponentTypeViewerData_NameInUse, propertyName );
 662         }
 663         Matcher m = namePattern.matcher(propertyName);
 664         if (!m.matches())
 665             return NLS.bind(Messages.ComponentTypeViewerData_ContainsInvalidCharacters, propertyName, namePattern.pattern());
 666         return null;
 667     }
 668
 669 }