private RenameSupport undoAndCreateRenameSupport(String newName) throws CoreException {
// Assumption: the linked mode model should be shut down by now.
final ISourceViewer viewer = fEditor.getViewer();
try {
if (!fOriginalName.equals(newName)) {
fEditor
.getSite()
.getWorkbenchWindow()
.run(
false,
true,
new IRunnableWithProgress() {
@Override
public void run(IProgressMonitor monitor)
throws InvocationTargetException, InterruptedException {
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();
while (undoManager.undoable()) {
if (fStartingUndoOperation != null
&& fStartingUndoOperation.equals(
operationHistory.getUndoOperation(undoContext))) {
return;
}
undoManager.undo();
}
}
}
}
});
}
} catch (InvocationTargetException e) {
throw new CoreException(
new Status(
IStatus.ERROR,
DartToolsPlugin.getPluginId(),
ReorgMessages.RenameLinkedMode_error_saving_editor,
e));
} catch (InterruptedException e) {
// canceling is OK
return null;
} finally {
DartModelUtil.reconcile(getCompilationUnit());
}
viewer.setSelectedRange(fOriginalSelection.x, fOriginalSelection.y);
if (newName.length() == 0) {
return null;
}
return RefactoringExecutionStarter.createRenameSupport(fDartElement, newName, 0);
}
private void linkedModeLeft() {
fgActiveLinkedMode = null;
if (fInfoPopup != null) {
fInfoPopup.close();
}
ISourceViewer viewer = fEditor.getViewer();
if (viewer instanceof IEditingSupportRegistry) {
IEditingSupportRegistry registry = (IEditingSupportRegistry) viewer;
registry.unregister(fFocusEditingSupport);
}
}
private void restoreFullSelection() {
if (fOriginalSelection.y != 0) {
int originalOffset = fOriginalSelection.x;
LinkedPosition[] positions = fLinkedPositionGroup.getPositions();
for (int i = 0; i < positions.length; i++) {
LinkedPosition position = positions[i];
if (!position.isDeleted() && position.includes(originalOffset)) {
fEditor.getViewer().setSelectedRange(position.offset, position.length);
return;
}
}
}
}
public LinkedPosition getCurrentLinkedPosition() {
Point selection = fEditor.getViewer().getSelectedRange();
int start = selection.x;
int end = start + selection.y;
LinkedPosition[] positions = fLinkedPositionGroup.getPositions();
for (int i = 0; i < positions.length; i++) {
LinkedPosition position = positions[i];
if (position.includes(start) && position.includes(end)) {
return position;
}
}
return null;
}
void doRename(boolean showPreview) {
cancel();
Image image = null;
Label label = null;
fShowPreview |= showPreview;
try {
ISourceViewer viewer = fEditor.getViewer();
if (viewer instanceof SourceViewer) {
SourceViewer sourceViewer = (SourceViewer) viewer;
Control viewerControl = sourceViewer.getControl();
if (viewerControl instanceof Composite) {
Composite composite = (Composite) viewerControl;
Display display = composite.getDisplay();
// Flush pending redraw requests:
while (!display.isDisposed() && display.readAndDispatch()) {}
// Copy editor area:
GC gc = new GC(composite);
Point size;
try {
size = composite.getSize();
image = new Image(gc.getDevice(), size.x, size.y);
gc.copyArea(image, 0, 0);
} finally {
gc.dispose();
gc = null;
}
// Persist editor area while executing refactoring:
label = new Label(composite, SWT.NONE);
label.setImage(image);
label.setBounds(0, 0, size.x, size.y);
label.moveAbove(null);
}
}
String newName = fNamePosition.getContent();
if (fOriginalName.equals(newName)) {
return;
}
RenameSupport renameSupport = undoAndCreateRenameSupport(newName);
if (renameSupport == null) {
return;
}
Shell shell = fEditor.getSite().getShell();
boolean executed;
if (fShowPreview) { // could have been updated by undoAndCreateRenameSupport(..)
executed = renameSupport.openDialog(shell, true);
} else {
renameSupport.perform(shell, fEditor.getSite().getWorkbenchWindow());
executed = true;
}
if (executed) {
restoreFullSelection();
}
DartModelUtil.reconcile(getCompilationUnit());
} catch (CoreException ex) {
DartToolsPlugin.log(ex);
} catch (InterruptedException ex) {
// canceling is OK -> redo text changes in that case?
} catch (InvocationTargetException ex) {
DartToolsPlugin.log(ex);
} catch (BadLocationException e) {
DartToolsPlugin.log(e);
} finally {
if (label != null) {
label.dispose();
}
if (image != null) {
image.dispose();
}
}
}
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 {
DartUnit root =
ASTProvider.getASTProvider().getAST(getCompilationUnit(), ASTProvider.WAIT_YES, null);
fLinkedPositionGroup = new LinkedPositionGroup();
DartNode selectedNode = NodeFinder.perform(root, fOriginalSelection.x, fOriginalSelection.y);
if (!(selectedNode instanceof DartIdentifier)) {
return; // TODO: show dialog
}
DartIdentifier nameNode = (DartIdentifier) selectedNode;
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.getSourceInfo().getOffset();
DartNode[] sameNodes = LinkedNodeFinder.findByNode(root, nameNode);
// TODO: copied from LinkedNamesAssistProposal#apply(..):
// sort for iteration order, starting with the node @ offset
Arrays.sort(
sameNodes,
new Comparator<DartNode>() {
@Override
public int compare(DartNode o1, DartNode o2) {
return rank(o1) - rank(o2);
}
/**
* Returns the absolute rank of an <code>DartNode</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(DartNode node) {
int relativeRank =
node.getSourceInfo().getOffset() + node.getSourceInfo().getLength() - pos;
if (relativeRank < 0) {
return Integer.MAX_VALUE + relativeRank;
} else {
return relativeRank;
}
}
});
for (int i = 0; i < sameNodes.length; i++) {
DartNode elem = sameNodes[i];
LinkedPosition linkedPosition =
new LinkedPosition(
document, elem.getSourceInfo().getOffset(), elem.getSourceInfo().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);
}
}
