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
fCaretOffset= caretOffset;
	}
	/**
	 * Enters the linked mode. The linked mode can be left by calling
	 * <code>exit</code>.
	 * 
	 * @see #exit(boolean)
	 */
	public void enter() {
		
		IDocument document= fViewer.getDocument();
		document.addPositionCategory(CARET_POSITION);
		document.addPositionUpdater(fgUpdater);
		try {
			if (fFinalCaretOffset != -1)
				document.addPosition(CARET_POSITION, new Position(fFinalCaretOffset));
		} catch (BadLocationException e) {
			handleException(fViewer.getTextWidget().getShell(), e);
		} catch (BadPositionCategoryException e) {
			JavaPlugin.log(e);
			Assert.isTrue(false);
		}
		fViewer.addTextInputListener(this);
		fViewer.addTextListener(this);
				
		ITextViewerExtension extension= (ITextViewerExtension) fViewer;
		extension.prependVerifyKeyListener(this);
		StyledText text= fViewer.getTextWidget();			
		text.addVerifyListener(this);
		text.addModifyListener(this);