org.simantics.interop.update/src/org/simantics/interop/update/editor/ModelUpdateEditor.java

   1 package org.simantics.interop.update.editor;
   2
   3 import java.util.ArrayList;
   4 import java.util.Collection;
   5 import java.util.HashSet;
   6 import java.util.List;
   7 import java.util.Stack;
   8
   9 import org.eclipse.jface.resource.ImageDescriptor;
  10 import org.eclipse.jface.resource.JFaceResources;
  11 import org.eclipse.jface.resource.LocalResourceManager;
  12 import org.eclipse.jface.viewers.CellEditor;
  13 import org.eclipse.jface.viewers.CheckStateChangedEvent;
  14 import org.eclipse.jface.viewers.CheckboxCellEditor;
  15 import org.eclipse.jface.viewers.CheckboxTreeViewer;
  16 import org.eclipse.jface.viewers.ColumnLabelProvider;
  17 import org.eclipse.jface.viewers.ColumnViewer;
  18 import org.eclipse.jface.viewers.ColumnViewerToolTipSupport;
  19 import org.eclipse.jface.viewers.EditingSupport;
  20 import org.eclipse.jface.viewers.ICheckStateListener;
  21 import org.eclipse.jface.viewers.IStructuredContentProvider;
  22 import org.eclipse.jface.viewers.ITreeContentProvider;
  23 import org.eclipse.jface.viewers.ITreeViewerListener;
  24 import org.eclipse.jface.viewers.TableViewer;
  25 import org.eclipse.jface.viewers.TableViewerColumn;
  26 import org.eclipse.jface.viewers.TreeExpansionEvent;
  27 import org.eclipse.jface.viewers.TreeViewerColumn;
  28 import org.eclipse.jface.viewers.Viewer;
  29 import org.eclipse.swt.SWT;
  30 import org.eclipse.swt.events.SelectionAdapter;
  31 import org.eclipse.swt.events.SelectionEvent;
  32 import org.eclipse.swt.graphics.Color;
  33 import org.eclipse.swt.graphics.Image;
  34 import org.eclipse.swt.graphics.RGB;
  35 import org.eclipse.swt.layout.FillLayout;
  36 import org.eclipse.swt.layout.GridData;
  37 import org.eclipse.swt.layout.GridLayout;
  38 import org.eclipse.swt.widgets.Button;
  39 import org.eclipse.swt.widgets.Composite;
  40 import org.eclipse.swt.widgets.Display;
  41 import org.eclipse.swt.widgets.Label;
  42 import org.eclipse.swt.widgets.Text;
  43 import org.simantics.db.ReadGraph;
  44 import org.simantics.db.Resource;
  45 import org.simantics.db.Session;
  46 import org.simantics.db.Statement;
  47 import org.simantics.db.WriteGraph;
  48 import org.simantics.db.common.request.WriteRequest;
  49 import org.simantics.db.exception.DatabaseException;
  50 import org.simantics.db.layer0.util.Layer0Utils;
  51 import org.simantics.db.request.Read;
  52 import org.simantics.interop.test.GraphChanges;
  53 import org.simantics.interop.test.GraphComparator;
  54 import org.simantics.interop.update.Activator;
  55 import org.simantics.interop.update.model.UpdateList;
  56 import org.simantics.interop.update.model.UpdateNode;
  57 import org.simantics.interop.update.model.UpdateNode.Status;
  58 import org.simantics.interop.update.model.UpdateOp;
  59 import org.simantics.interop.update.model.UpdateTree;
  60 import org.simantics.interop.utils.TableUtils;
  61 import org.simantics.ui.SimanticsUI;
  62 import org.simantics.utils.datastructures.Callback;
  63 import org.simantics.utils.datastructures.Pair;
  64 import org.simantics.utils.ui.ExceptionUtils;
  65
  66
  67 /**
  68  * Editor for updating models.
  69  *
  70  * @author Marko Luukkainen <marko.luukkainen@vtt.fi>
  71  *
  72  */
  73 public abstract class ModelUpdateEditor extends Composite{
  74
  75         private Composite errorComposite;
  76
  77         private CheckboxTreeViewer changeBrowser;
  78         private TableViewer changeViewer;
  79
  80         private GraphChanges changes;
  81         private UpdateTree updateTree;
  82         private UpdateList updateList;
  83
  84         private Button updateAllButton;
  85         private Button updateSelectedButton;
  86
  87         private LocalResourceManager manager = new LocalResourceManager(JFaceResources.getResources());
  88
  89         private Image checked;
  90         private Image unchecked;
  91         private Image warning;
  92
  93         private Color containsColor;
  94         private Color deletedColor;
  95         private Color addedColor;
  96
  97
  98         private HashSet<UpdateNode> selectedStructure = new HashSet<UpdateNode>();
  99
 100         private List<ChangeFilter> filters = new ArrayList<ChangeFilter>();
 101
 102         public ModelUpdateEditor(Composite parent) {
 103                 super(parent,SWT.NONE);
 104                 checked = manager.createImage(Activator.imageDescriptorFromPlugin("com.famfamfam.silk", "icons/tick.png"));
 105                 unchecked = manager.createImage(Activator.imageDescriptorFromPlugin("com.famfamfam.silk", "icons/cross.png"));
 106                 warning = manager.createImage(Activator.imageDescriptorFromPlugin("com.famfamfam.silk", "icons/error.png"));
 107
 108
 109                 containsColor = new Color(parent.getDisplay(), new RGB(255,255,220));
 110                 deletedColor = new Color(parent.getDisplay(), new RGB(255,220,220));
 111                 addedColor = new Color(parent.getDisplay(), new RGB(220,255,220));
 112
 113                 this.setLayout(new GridLayout(1,false));
 114
 115                 errorComposite = new Composite(this, SWT.BORDER);
 116                 GridData data = new GridData();
 117                 data.grabExcessHorizontalSpace = true;
 118                 data.grabExcessVerticalSpace = false;
 119                 data.horizontalAlignment = SWT.FILL;
 120                 data.verticalAlignment = SWT.TOP;
 121                 errorComposite.setLayoutData(data);
 122                 errorComposite.setLayout(new GridLayout(2, false));
 123
 124                 errorComposite.setVisible(false);
 125
 126 //              IEditorInput input = getEditorInput();
 127 //              if (!(input instanceof UpdateEditorInput)) {
 128 //                      Label label = new Label(composite, SWT.NONE);
 129 //                      label.setText("Unknown input.");
 130 //                      return;
 131 //              }
 132
 133                 Composite fillComposite = new Composite(this, SWT.NONE);
 134                 data = new GridData();
 135                 data.grabExcessHorizontalSpace = true;
 136                 data.grabExcessVerticalSpace = true;
 137                 data.horizontalAlignment = SWT.FILL;
 138                 data.verticalAlignment = SWT.FILL;
 139                 fillComposite.setLayoutData(data);
 140                 fillComposite.setLayout(new FillLayout(SWT.VERTICAL));
 141
 142                 {
 143                         changeBrowser = new CheckboxTreeViewer(fillComposite,SWT.MULTI|SWT.V_SCROLL|SWT.BORDER|SWT.FULL_SELECTION  );
 144
 145                         changeBrowser.setContentProvider(new UpdateTreeContentProvider());
 146
 147                         changeBrowser.getTree().setHeaderVisible(true);
 148
 149                         ColumnViewerToolTipSupport.enableFor(changeBrowser);
 150
 151
 152                         TreeViewerColumn dataColumn = TableUtils.addColumn(changeBrowser, "Data", true, 600);
 153
 154                         dataColumn.setLabelProvider(new UpdateNodeLabelProvider());
 155
 156                         changeBrowser.addCheckStateListener(new ICheckStateListener() {
 157
 158                                 @Override
 159                                 public void checkStateChanged(CheckStateChangedEvent event) {
 160                                         UpdateNode node = (UpdateNode) event.getElement();
 161                                         if (node.getOp() != null) {
 162                                                 node.getOp().select(Boolean.TRUE.equals(event.getChecked()));
 163
 164                                         }
 165                                         refreshChecked();
 166
 167                                 }
 168                         });
 169                         changeBrowser.addTreeListener(new ITreeViewerListener() {
 170
 171                                 @Override
 172                                 public void treeExpanded(TreeExpansionEvent event) {
 173                                         event.getTreeViewer().getControl().getDisplay().asyncExec(new Runnable() {
 174
 175                                                 @Override
 176                                                 public void run() {
 177                                                         // TreeViewer uses lazy load, checked states must be updated when the tree is expanded.
 178                                                         refreshChecked();
 179                                                 }
 180                                         });
 181
 182                                 }
 183
 184                                 @Override
 185                                 public void treeCollapsed(TreeExpansionEvent event) {
 186
 187                                 }
 188                         });
 189                         changeBrowser.setUseHashlookup(true);
 190
 191                 }
 192                 {
 193                         changeViewer = new TableViewer(fillComposite,SWT.MULTI|SWT.V_SCROLL|SWT.BORDER|SWT.FULL_SELECTION);
 194
 195                         changeViewer.getTable().setHeaderVisible(true);
 196                         changeViewer.getTable().setLinesVisible(true);
 197
 198                         changeViewer.setContentProvider(new ModificationListContentProvider());
 199
 200                         changeViewer.setUseHashlookup(true);
 201
 202                         TableViewerColumn selection = TableUtils.addColumn(changeViewer, getColumntTitle(0), false, false, 20);
 203                         TableViewerColumn diagram = TableUtils.addColumn(changeViewer, getColumntTitle(1), true, true, 100);
 204                         TableViewerColumn symbol = TableUtils.addColumn(changeViewer, getColumntTitle(2), true, true, 100);
 205                         TableViewerColumn property = TableUtils.addColumn(changeViewer, getColumntTitle(3), true, true, 100);
 206                         TableViewerColumn oldValue = TableUtils.addColumn(changeViewer, getColumntTitle(4), true, true, 100);
 207                         TableViewerColumn newValue = TableUtils.addColumn(changeViewer, getColumntTitle(5), true, true, 100);
 208
 209                         diagram.setLabelProvider(getLabelProvider(1));
 210                         symbol.setLabelProvider(getLabelProvider(2));
 211                         property.setLabelProvider(getLabelProvider(3));
 212                         oldValue.setLabelProvider(getLabelProvider(4));
 213                         newValue.setLabelProvider(getLabelProvider(5));
 214
 215                         selection.setLabelProvider(new SelectionLabelProvider());
 216                         selection.getColumn().addSelectionListener(new SelectionAdapter() {
 217                                 @Override
 218                                 public void widgetSelected(SelectionEvent e) {
 219                                         if (updateList.getChanges().size() > 0) {
 220                                                 if (updateList.getSelected().contains(updateList.getChanges().iterator().next())) {
 221                                                         for (Pair<Statement, Statement> nr : updateList.getChanges())
 222                                                                 updateList.removeSelected(nr);
 223                                                 } else {
 224                                                         for (Pair<Statement, Statement> nr : updateList.getChanges())
 225                                                                 updateList.addSelected(nr);
 226                                                 }
 227                                                 changeViewer.refresh();
 228                                         }
 229                                 }
 230                         });
 231                         selection.setEditingSupport(new SelectionEditingSupport(changeViewer));
 232
 233                 }
 234                 Composite buttonComposite = new Composite(this, SWT.NONE);
 235
 236                 data = new GridData();
 237                 data.grabExcessHorizontalSpace = true;
 238                 data.grabExcessVerticalSpace = false;
 239                 data.horizontalAlignment = SWT.FILL;
 240                 data.verticalAlignment = SWT.BOTTOM;
 241
 242                 buttonComposite.setLayoutData(data);
 243
 244                 buttonComposite.setLayout(new GridLayout(3, false));
 245
 246                 Label label = new Label(buttonComposite, SWT.NONE);
 247                 data = new GridData();
 248                 data.grabExcessHorizontalSpace = true;
 249                 data.grabExcessVerticalSpace = false;
 250                 data.horizontalAlignment = SWT.FILL;
 251                 data.verticalAlignment = SWT.CENTER;
 252                 label.setLayoutData(data);
 253
 254                 updateAllButton = new Button(buttonComposite, SWT.PUSH);
 255                 updateAllButton.setText("Update All");
 256                 updateAllButton.addSelectionListener(new SelectionAdapter() {
 257                         @Override
 258                         public void widgetSelected(SelectionEvent e) {
 259                                 applyAll();
 260                         }
 261                 });
 262                 updateSelectedButton = new Button(buttonComposite, SWT.PUSH);
 263                 updateSelectedButton.setText("Update Selected");
 264                 updateSelectedButton.addSelectionListener(new SelectionAdapter() {
 265                         @Override
 266                         public void widgetSelected(SelectionEvent e) {
 267                                 applySelected();
 268                         }
 269                 });
 270         }
 271
 272         protected Session getSession() {
 273                 return SimanticsUI.getSession();
 274         }
 275
 276         protected String getColumntTitle(int i) {
 277                 switch (i) {
 278                 case 0:
 279                         return "!";
 280                 case 1:
 281                         return "Diagram";
 282                 case 2:
 283                         return "Symbol";
 284                 case 3:
 285                         return "Property";
 286                 case 4:
 287                         return "Old Value";
 288                 case 5:
 289                         return "New Value";
 290                 default:
 291                         throw new RuntimeException("Unknown column index" + i);
 292
 293                 }
 294         }
 295
 296         protected abstract ColumnLabelProvider getLabelProvider(int i);
 297         protected abstract Pair<GraphComparator,Boolean> getChanges(Resource r1, Resource r2)  throws DatabaseException;
 298         protected abstract UpdateTree getUpdateTree(GraphChanges changes) throws DatabaseException;
 299         protected UpdateList getUpdateList(GraphChanges changes) throws DatabaseException {
 300                 return new UpdateList(changes.getModifications());
 301         }
 302
 303         protected void addFilters(List<ChangeFilter> filters) {
 304
 305         }
 306
 307         public GraphChanges getChanges() {
 308                 return changes;
 309         }
 310
 311         public UpdateTree getUpdateTree() {
 312                 return updateTree;
 313         }
 314
 315         public UpdateList getUpdateList() {
 316                 return updateList;
 317         }
 318
 319         public CheckboxTreeViewer getChangeBrowser() {
 320                 return changeBrowser;
 321         }
 322
 323         public TableViewer getChangeViewer() {
 324                 return changeViewer;
 325         }
 326
 327         private void showWarning(String text) {
 328                 errorComposite.setVisible(true);
 329
 330                 Label label = new Label(errorComposite, SWT.NONE);
 331                 label.setImage(warning);
 332                 label = new Label(errorComposite, SWT.NONE);
 333                 label.setText(text);
 334                 //this.setStatusMessage("Update contains structural changes (new or deleted symbols), please create a new model.");
 335                 this.layout(true);
 336         }
 337
 338
 339         private List<ICheckStateListener> checkStateListeners = new ArrayList<>();
 340
 341
 342         public void addCheckStateListener(ICheckStateListener listener) {
 343                 checkStateListeners.add(listener);
 344         }
 345
 346         public void removeCheckStateListener(ICheckStateListener listener) {
 347                 checkStateListeners.remove(listener);
 348         }
 349
 350         public void refreshChecked() {
 351                 Stack<UpdateNode> nodeStack = new Stack<UpdateNode>();
 352                 nodeStack.push((UpdateNode)updateTree.getRootNode());
 353                 while (!nodeStack.isEmpty()) {
 354                         UpdateNode n = nodeStack.pop();
 355                         if (n.getOp() != null) {
 356                                 UpdateOp op = n.getOp();
 357                                 if (!op.isAdd() && !op.isDelete()) {
 358                                         changeBrowser.setGrayed(n, true);
 359                                         changeBrowser.setChecked(n, true);
 360                                 } else {
 361                                         boolean applied = op.applied();
 362                                         if (applied) {
 363                                                 changeBrowser.setChecked(n, true);
 364                                                 changeBrowser.setGrayed(n, true);
 365                                                 selectedStructure.remove(n);
 366                                         } else {
 367                                                 boolean sel = op.selected();
 368                                                 if (sel) {
 369                                                         selectedStructure.add(n);
 370
 371                                                 } else {
 372                                                         selectedStructure.remove(n);
 373                                                 }
 374                                                 changeBrowser.setChecked(n, sel);
 375                                                 changeBrowser.setGrayed(n, false);
 376                                         }
 377                                 }
 378                         } else {
 379                                 changeBrowser.setGrayed(n, true);
 380                                 changeBrowser.setChecked(n, true);
 381                         }
 382                         for (UpdateNode c : n.getChildren()) {
 383                                 nodeStack.add((UpdateNode)c);
 384                         }
 385                 }
 386
 387                 changeBrowser.refresh();
 388                 for (ICheckStateListener l : checkStateListeners) {
 389                         l.checkStateChanged(new CheckStateChangedEvent(changeBrowser, null, false));
 390                 }
 391                 changeViewer.refresh();
 392         }
 393
 394
 395
 396         public void load(UpdateEditorInput uei) {
 397
 398                 addFilters(filters);
 399
 400                 Resource r1 = uei.getR1();
 401                 Resource r2 = uei.getR2();
 402
 403
 404                 try {
 405
 406                         Pair<GraphComparator,Boolean> result = getChanges(r1,r2);
 407                         GraphComparator comparator  = result.first;
 408                         if (result.second)
 409                                 showWarning("Structural symbols have been changed. Model update is not able to update these, please create a new model.");
 410                         comparator.test(getSession());
 411                         changes = comparator.getChanges();
 412                         changes = getSession().syncRequest(new FilterChangesRead(changes));
 413                         updateTree = getUpdateTree(changes);
 414                         updateList = getUpdateList(changes);
 415                 } catch (DatabaseException e) {
 416                         Text text = new Text(this, SWT.MULTI);
 417                         text.setText(e.getMessage());
 418                         e.printStackTrace();
 419                         return;
 420                 }
 421
 422                 setInputs();
 423
 424                 refreshChecked();
 425         }
 426
 427         protected void setInputs() {
 428                 changeViewer.setInput(updateList.getChanges());
 429                 changeBrowser.setInput(updateTree);
 430         }
 431
 432         private void applyAll() {
 433                 updateAllButton.setEnabled(false);
 434                 updateSelectedButton.setEnabled(false);
 435                 getSession().asyncRequest(new WriteRequest(){
 436                         @Override
 437                         public void perform(WriteGraph graph) throws DatabaseException {
 438                                 Layer0Utils.addCommentMetadata(graph, "Apply all model updates");
 439                                 graph.markUndoPoint();
 440                                 for (Pair<Statement, Statement> mod : updateList.getChanges()) {
 441                                         applyLiteralChange(graph, mod);
 442                                 }
 443                                 updateList.clear();
 444
 445                                 updateTree.getUpdateOps().applyAll(graph);
 446
 447                                 Display.getDefault().asyncExec(new Runnable() {
 448
 449                                         @Override
 450                                         public void run() {
 451
 452                                                 updateAllButton.setEnabled(true);
 453                                                 updateSelectedButton.setEnabled(true);
 454                                                 refreshChecked();
 455                                                 changeViewer.refresh();
 456                                         }
 457                                 });
 458                         }
 459
 460
 461                 }, new Callback<DatabaseException>() {
 462                         @Override
 463                         public void run(DatabaseException parameter) {
 464                                 if (parameter != null)
 465                                         ExceptionUtils.logAndShowError("Cannot update model", parameter);
 466                         }
 467                 });
 468         }
 469
 470         protected void applyLiteralChange(WriteGraph graph, Pair<Statement, Statement> mod) throws DatabaseException {
 471                 if (mod.second == null) {
 472                         graph.deny(mod.first);
 473                         return;
 474                 }
 475                 Resource s = changes.getComparable().getLeft(mod.second.getSubject());
 476                 Resource pred = mod.second.getPredicate();
 477                 if (graph.hasValue(mod.second.getObject())) {
 478                         Object value = graph.getValue(mod.second.getObject());
 479                         graph.claimLiteral(s, pred, value);
 480                 } else {
 481                         graph.deny(s,pred);
 482                 }
 483
 484
 485         }
 486
 487         private void applySelected() {
 488                 updateAllButton.setEnabled(false);
 489                 updateSelectedButton.setEnabled(false);
 490                 getSession().asyncRequest(new WriteRequest(){
 491                         @Override
 492                         public void perform(WriteGraph graph) throws DatabaseException {
 493                                 Layer0Utils.addCommentMetadata(graph, "Apply selected model updates");
 494                                 graph.markUndoPoint();
 495                                 for (Pair<Statement, Statement> mod : updateList.getSelected()) {
 496                                         updateList.removeChange(mod);
 497                                         applyLiteralChange(graph, mod);
 498                                 }
 499
 500                                 updateTree.getUpdateOps().applySelected(graph);
 501
 502                                 Display.getDefault().asyncExec(new Runnable() {
 503
 504                                         @Override
 505                                         public void run() {
 506                                                 changeViewer.refresh();
 507                                                 updateAllButton.setEnabled(true);
 508                                                 updateSelectedButton.setEnabled(true);
 509                                                 refreshChecked();
 510                                         }
 511                                 });
 512                         }
 513                 });
 514         }
 515
 516
 517         /**
 518          * Filters changes:
 519          * 1. Changes that are not essential for model update (changes that can be found when the models are axcatly the same)
 520          * 2. Runs custom filters for value changes.
 521          *
 522          * @param g
 523          * @param changes
 524          * @return
 525          * @throws DatabaseException
 526          */
 527         protected GraphChanges filterChanges(ReadGraph g, GraphChanges changes) throws DatabaseException
 528     {
 529
 530                 List<Pair<Statement,Statement>> modifications = new ArrayList<Pair<Statement,Statement>>();
 531
 532         for (Pair<Statement, Statement> mod : changes.getModifications()) {
 533
 534                 boolean accept = true;
 535                 for (ChangeFilter filter : filters) {
 536                         if (!filter.accept(g, mod)) {
 537                                 accept = false;
 538                                 break;
 539                         }
 540                 }
 541                 if (accept)
 542                         modifications.add(mod);
 543         }
 544         GraphChanges newChanges =  new GraphChanges(changes.getResource1(),changes.getResource2(),changes.getDeletions(), changes.getAdditions(), modifications, changes.getComparable());
 545         return newChanges;
 546     }
 547
 548         public interface ChangeFilter {
 549                 public boolean accept(ReadGraph g, Pair<Statement, Statement> change) throws DatabaseException;
 550         }
 551
 552
 553
 554
 555         /**
 556          *
 557          * Filters floating point value changes (default filter is set filter when the change is less than 1%)
 558          *
 559          */
 560         protected class FPValueFilter implements ChangeFilter  {
 561
 562                 private double percentage = 0.01;
 563
 564                 public FPValueFilter() {
 565
 566                 }
 567
 568                 public FPValueFilter(double percentage) {
 569                         if (percentage < 0.0 || percentage > 1.0)
 570                                 throw new IllegalArgumentException("Percentage must be between 0.0 and 1.0.");
 571                         this.percentage = percentage;
 572                 }
 573
 574                 @Override
 575                 public boolean accept(ReadGraph g, Pair<Statement, Statement> change) throws DatabaseException {
 576                         //filter floating point values that have less than 1% difference.
 577                         if (!g.hasValue(change.first.getObject()) || !g.hasValue(change.second.getObject()))
 578                                 return true;
 579                 Object v1 = g.getValue(change.first.getObject());
 580                 Object v2 = g.getValue(change.second.getObject());
 581
 582                 if (v1 instanceof Double && v2 instanceof Double) {
 583                         double d1 = (Double)v1;
 584                         double d2 = (Double)v2;
 585                         if (Math.abs(d1-d2) / Math.max(Math.abs(d1), Math.abs(d2)) < percentage)
 586                                 return false;
 587                 } else if (v1 instanceof Float && v2 instanceof Float) {
 588                         float d1 = (Float)v1;
 589                         float d2 = (Float)v2;
 590                         if (Math.abs(d1-d2) / Math.max(Math.abs(d1), Math.abs(d2)) < percentage)
 591                                 return false;
 592                 }
 593
 594                 return true;
 595                 }
 596         }
 597
 598
 599         private class FilterChangesRead implements Read<GraphChanges> {
 600                 private GraphChanges changes;
 601                 public FilterChangesRead(GraphChanges changes) {
 602                         this.changes = changes;
 603                 }
 604
 605                 @Override
 606                 public GraphChanges perform(ReadGraph graph) throws DatabaseException {
 607                         return filterChanges(graph, changes);
 608                 }
 609         }
 610
 611
 612         private class ModificationListContentProvider implements IStructuredContentProvider {
 613
 614                 @SuppressWarnings("unchecked")
 615                 @Override
 616                 public Object[] getElements(Object inputElement) {
 617                         if (inputElement == null)
 618                                 return null;
 619                         Collection<Pair<Statement, Statement>> coll = (Collection<Pair<Statement, Statement>>)inputElement;
 620                         return coll.toArray();
 621                 }
 622
 623                 @Override
 624                 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 625
 626                 }
 627
 628                 @Override
 629                 public void dispose() {
 630
 631                 }
 632         }
 633
 634         private class UpdateTreeContentProvider implements ITreeContentProvider {
 635                 @Override
 636                 public Object[] getElements(Object inputElement) {
 637                         if (inputElement instanceof UpdateTree)
 638                                 return new Object[]{((UpdateTree)inputElement).getRootNode()};
 639                         if (inputElement instanceof UpdateNode) {
 640                                 UpdateNode node = (UpdateNode)inputElement;
 641                                 return node.getChildren().toArray();
 642                         }
 643                         return new Object[0];
 644                 }
 645
 646                 @Override
 647                 public Object getParent(Object element) {
 648                         return null;
 649                 }
 650
 651                 @Override
 652                 public Object[] getChildren(Object parentElement) {
 653                         UpdateNode node = (UpdateNode)parentElement;
 654                         return node.getChildren().toArray();
 655                 }
 656
 657                 @Override
 658                 public boolean hasChildren(Object element) {
 659                         UpdateNode node = (UpdateNode)element;
 660                         return node.getChildren().size() > 0;
 661                 }
 662
 663                 @Override
 664                 public void dispose() {
 665
 666                 }
 667
 668                 @Override
 669                 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 670
 671                 }
 672         }
 673
 674         private class SelectionLabelProvider extends ColumnLabelProvider {
 675
 676                 public SelectionLabelProvider() {
 677
 678                 }
 679                 @Override
 680                 public String getText(Object element) {
 681                         return "";
 682                 }
 683
 684                 @Override
 685                 public Image getImage(Object element) {
 686                         if (updateList == null)
 687                                 return null;
 688                         if (updateList.getSelected().contains(element))
 689                                 return checked;
 690                         else
 691                                 return unchecked;
 692                 }
 693         }
 694
 695         private class UpdateNodeLabelProvider extends ColumnLabelProvider {
 696
 697                 @Override
 698                 public String getText(Object element) {
 699                         final UpdateNode node = (UpdateNode)element;
 700                         return node.getLabel();
 701                 }
 702
 703                 @Override
 704                 public Image getImage(Object element) {
 705                         final UpdateNode node = (UpdateNode)element;
 706                         try  {
 707                                 ImageDescriptor id = getSession().syncRequest(new Read<ImageDescriptor>() {
 708                                         @Override
 709                                         public ImageDescriptor perform(ReadGraph graph) throws DatabaseException {
 710                                                 return node.getImage(graph);
 711                                         }
 712                                 });
 713                                 return manager.createImage(id);
 714                         } catch (Exception e) {
 715                                 return null;
 716                         }
 717                 }
 718
 719                 @Override
 720                 public String getToolTipText(Object element) {
 721                         final UpdateNode node = (UpdateNode)element;
 722                         if (node.getOp() != null) {
 723                                 return node.getOp().toString();
 724                         } else {
 725                                 return null;
 726                         }
 727                 }
 728
 729                 @Override
 730                 public int getToolTipDisplayDelayTime(Object object) {
 731                         return 1000;
 732                 }
 733
 734                 @Override
 735                 public int getToolTipTimeDisplayed(Object object) {
 736                         return 10000;
 737                 }
 738
 739                 @Override
 740                 public Color getBackground(Object element) {
 741                         final UpdateNode node = (UpdateNode)element;
 742                         Status status = node.getStatus();
 743                         if (status == Status.CONTAINS)
 744                                 return containsColor;
 745                         if (status == Status.DELETED)
 746                                 return deletedColor;
 747                         if (status == Status.NEW)
 748                                 return addedColor;
 749                         return null;
 750                 }
 751         }
 752
 753         private class SelectionEditingSupport extends EditingSupport {
 754
 755
 756                 @SuppressWarnings("rawtypes")
 757                 public SelectionEditingSupport(ColumnViewer viewer) {
 758                         super(viewer);
 759
 760                 }
 761
 762                 @Override
 763                 protected boolean canEdit(Object element) {
 764                         return true;
 765                 }
 766
 767                 @Override
 768                 protected CellEditor getCellEditor(Object element) {
 769                         return new CheckboxCellEditor(null, SWT.CHECK);
 770                 }
 771
 772                 @Override
 773                 protected Object getValue(Object element) {
 774                         if (updateList == null)
 775                                 return false;
 776                         return updateList.getSelected().contains(element);
 777                 }
 778
 779                 @SuppressWarnings("unchecked")
 780                 @Override
 781                 protected void setValue(Object element, Object value) {
 782                         if (updateList == null)
 783                                 return;
 784                         if (Boolean.TRUE.equals(value))
 785                                 updateList.addSelected((Pair<Statement, Statement>) element);
 786                         else
 787                                 updateList.removeSelected((Pair<Statement, Statement>) element);
 788
 789                         getViewer().refresh(element);
 790                 }
 791
 792
 793         }
 794
 795
 796 }