Bug 16923 Auto activation preference dialog
The auto activation characters and Timeout Text fields are enabled even when Auto activation itself is disabled. This was confusing to me because I thought that "." should cause automatic code assist, but it wasn't. Disabling the feature should disable the controls what modify the details for that feature.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/JavaEditorPreferencePage.java
public final OverlayPreferenceStore.OverlayKey[] fKeys= new OverlayPreferenceStore.OverlayKey[] {
		
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, AbstractTextEditor.PREFERENCE_COLOR_FOREGROUND),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AbstractTextEditor.PREFERENCE_COLOR_FOREGROUND_SYSTEM_DEFAULT),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, AbstractTextEditor.PREFERENCE_COLOR_BACKGROUND),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, AbstractTextEditor.PREFERENCE_COLOR_BACKGROUND_SYSTEM_DEFAULT),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.INT, JavaSourceViewerConfiguration.PREFERENCE_TAB_WIDTH),
		
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, IJavaColorConstants.JAVA_MULTI_LINE_COMMENT),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, IJavaColorConstants.JAVA_MULTI_LINE_COMMENT + BOLD),
		
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, IJavaColorConstants.JAVA_SINGLE_LINE_COMMENT),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, IJavaColorConstants.JAVA_SINGLE_LINE_COMMENT + BOLD),
		
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, IJavaColorConstants.JAVA_KEYWORD),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, IJavaColorConstants.JAVA_KEYWORD + BOLD),
				
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, IJavaColorConstants.JAVA_STRING),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, IJavaColorConstants.JAVA_STRING + BOLD),
		
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, IJavaColorConstants.JAVA_DEFAULT),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, IJavaColorConstants.JAVA_DEFAULT + BOLD),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, IJavaColorConstants.JAVADOC_KEYWORD),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, IJavaColorConstants.JAVADOC_KEYWORD + BOLD),
		
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, IJavaColorConstants.JAVADOC_TAG),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, IJavaColorConstants.JAVADOC_TAG + BOLD),
		
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.STRING, IJavaColorConstants.JAVADOC_LINK),
		new OverlayPreferenceStore.OverlayKey(OverlayPreferenceStore.BOOLEAN, IJavaColorConstants.JAVADOC_LINK + BOLD),