Bug 77636 Code Formatter Profile Editor should be more fault-tolerant [formatter]
200411022000 The Code Formatter Profile Editor should be more fault-tolerant. Especially on 'White Space' and 'Line Wrapping' tabs, it is very easy to mess things up by changing many settings at once with a single click at the wrong spot. Two possible solutions came to my mind: (1) The dialog could support an undo/redo-stack (via keybindings and/or via additional buttons on the bottom row) (2) The dialog could offer an 'Apply' button, with which the user could save the changes done so far. The current workaround for this is to leave the dialog via OK and then re-enter it, but that's cumbersome when you want to do a pass over all options.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/formatter/ModifyDialogTabPage.java
private final Map fPreferences;
	    private boolean fEnabled;
	    private String fKey;
	    
	    /**
	     * Create a new Preference.
	     * @param preferences The map where the value is written.
	     * @param key The key for which a value is managed.
	     */
	    public Preference(Map preferences, String key) {
	        fPreferences= preferences;
	        fEnabled= true;
	        fKey= key;
	    }
	    /**
	     * @return Gets the map of this Preference.
	     */
	    protected final Map getPreferences() {
	        return fPreferences;
	    }
	    /**
	     * Set the enabled state of all SWT widgets of this preference. 
	     * @param enabled new value
	     */
	    public final void setEnabled(boolean enabled) {
	        fEnabled= enabled;
	        updateWidget();