public void start() { if (getActiveLinkedMode() != null) { // for safety; should already be handled in RenameDartElementAction fgActiveLinkedMode.startFullDialog(); return; } ISourceViewer viewer = fEditor.getViewer(); IDocument document = viewer.getDocument(); fOriginalSelection = viewer.getSelectedRange(); int offset = fOriginalSelection.x; try { fLinkedPositionGroup = new LinkedPositionGroup(); prepareElement(); if (fDartElement == null) { return; } if (viewer instanceof ITextViewerExtension6) { IUndoManager undoManager = ((ITextViewerExtension6) viewer).getUndoManager(); if (undoManager instanceof IUndoManagerExtension) { IUndoManagerExtension undoManagerExtension = (IUndoManagerExtension) undoManager; IUndoContext undoContext = undoManagerExtension.getUndoContext(); IOperationHistory operationHistory = OperationHistoryFactory.getOperationHistory(); fStartingUndoOperation = operationHistory.getUndoOperation(undoContext); } } fOriginalName = nameNode.getName(); final int pos = nameNode.getOffset(); final List<ASTNode> sameNodes = Lists.newArrayList(); nameNode .getRoot() .accept( new RecursiveASTVisitor<Void>() { @Override public Void visitSimpleIdentifier(SimpleIdentifier node) { Element element = node.getElement(); element = getCanonicalElement(element); if (Objects.equal(element, fDartElement)) { sameNodes.add(node); } return super.visitSimpleIdentifier(node); } }); // TODO: copied from LinkedNamesAssistProposal#apply(..): // sort for iteration order, starting with the node @ offset Collections.sort( sameNodes, new Comparator<ASTNode>() { @Override public int compare(ASTNode o1, ASTNode o2) { return rank(o1) - rank(o2); } /** * Returns the absolute rank of an <code>ASTNode</code>. Nodes preceding <code>pos * </code> are ranked last. * * @param node the node to compute the rank for * @return the rank of the node with respect to the invocation offset */ private int rank(ASTNode node) { int relativeRank = node.getOffset() + node.getLength() - pos; if (relativeRank < 0) { return Integer.MAX_VALUE + relativeRank; } else { return relativeRank; } } }); for (int i = 0; i < sameNodes.size(); i++) { ASTNode elem = sameNodes.get(i); LinkedPosition linkedPosition = new LinkedPosition(document, elem.getOffset(), elem.getLength(), i); if (i == 0) { fNamePosition = linkedPosition; } fLinkedPositionGroup.addPosition(linkedPosition); } fLinkedModeModel = new LinkedModeModel(); fLinkedModeModel.addGroup(fLinkedPositionGroup); fLinkedModeModel.forceInstall(); fLinkedModeModel.addLinkingListener(new EditorHighlightingSynchronizer(fEditor)); fLinkedModeModel.addLinkingListener(new EditorSynchronizer()); LinkedModeUI ui = new EditorLinkedModeUI(fLinkedModeModel, viewer); ui.setExitPosition(viewer, offset, 0, Integer.MAX_VALUE); ui.setExitPolicy(new ExitPolicy(document)); ui.enter(); viewer.setSelectedRange( fOriginalSelection.x, fOriginalSelection.y); // by default, full word is selected; restore original selection if (viewer instanceof IEditingSupportRegistry) { IEditingSupportRegistry registry = (IEditingSupportRegistry) viewer; registry.register(fFocusEditingSupport); } openSecondaryPopup(); // startAnimation(); fgActiveLinkedMode = this; } catch (BadLocationException e) { DartToolsPlugin.log(e); } }