public LinkedPosition getCurrentLinkedPosition() {
int start = context.getSelectionOffset();
int end = start + context.getSelectionLength();
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;
}
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;
}
public boolean isOriginalName() {
try {
String newName = fNamePosition.getContent();
return fOriginalName.equals(newName);
} catch (BadLocationException e) {
return false;
}
}
public boolean isEnabled() {
try {
String newName = fNamePosition.getContent();
if (fOriginalName.equals(newName)) {
return false;
}
// TODO(scheglov) we may be rename not only variable, but also method, type, etc
return NamingConventions.validateVariableName(newName).isOK();
} catch (BadLocationException e) {
return false;
}
}
@Override
public ExitFlags doExit(LinkedModeModel model, VerifyEvent event, int offset, int length) {
if (length == 0 && (event.character == SWT.BS || event.character == SWT.DEL)) {
LinkedPosition position =
model.findPosition(new LinkedPosition(fDocument, offset, 0, LinkedPositionGroup.NO_STOP));
if (position != null) {
if (event.character == SWT.BS) {
if (offset - 1 < position.getOffset()) {
// skip backspace at beginning of linked position
event.doit = false;
}
} else /* event.character == SWT.DEL */ {
if (offset + 1 > position.getOffset() + position.getLength()) {
// skip delete at end of linked position
event.doit = false;
}
}
}
}
return null; // don't change behavior
}
public void startFullDialog() {
cancel();
try {
String newName = fNamePosition.getContent();
RenameSupport renameSupport = undoAndCreateRenameSupport(newName);
if (renameSupport != null) {
renameSupport.openDialog(fEditor.getSite().getShell());
}
} catch (CoreException e) {
DartToolsPlugin.log(e);
} catch (BadLocationException e) {
DartToolsPlugin.log(e);
}
}
public boolean isEnabled() {
try {
String newName = fNamePosition.getContent();
if (fOriginalName.equals(newName)) {
return false;
}
/*
* TODO: use DartRenameProcessor#checkNewElementName(String) but make sure implementations
* don't access outdated Dart Model (cache all necessary information before starting linked
* mode).
*/
// TODO(scheglov) we may be rename not only variable, but also method, type, etc
return DartConventions.validateVariableName(newName).isOK();
} catch (BadLocationException e) {
return false;
}
}
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();
if (renameSupport.hasUnresolvedNameReferences()) {
fShowPreview = true;
}
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();
}
} 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();
}
}
}
