Bug 25370 Linked Mode: Want to define where to focus
20021022 I added a new feature that starts the linked mode on all usages of a variable. e.g. int i; i= 1; i++; would link all 3 occurrences of i, so when edited, all 3 references are changed simultanously. Problem is that the liked mode does not allow me to set the focus (where to edit) to e.g. the 'i' in 'i++'. The linked mode only allows to edit the top most linked position ('int i'). The feature can be invoked on any reference. Jumping to the top not so ideal.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/link/LinkedPositionUI.java
if (fExitListener != null)
				fExitListener.exit(
					((flags & COMMIT) != 0) ||
					((flags & DOCUMENT_CHANGED) != 0));
		} catch (BadPositionCategoryException e) {
			JavaPlugin.log(e);
			Assert.isTrue(false);
		}
		if ((flags & DOCUMENT_CHANGED) == 0)
			text.redraw();
	}
	private void next() {
		redrawRegion();
		
		fFramePosition= fManager.getNextPosition(fFramePosition.getOffset());
		if (fFramePosition == null) {
			leave(UNINSTALL | COMMIT | UPDATE_CARET);
		} else {
			selectRegion();
			redrawRegion();
		}
	}
	
	private void previous() {
		redrawRegion();
		
		Position position= fManager.getPreviousPosition(fFramePosition.getOffset());
		if (position == null) {
			fViewer.getTextWidget().getDisplay().beep();