Bug 65268 [projection] editor is missing collapse all action for code folding
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
public void partVisible(IWorkbenchPartReference partRef) {
			if (JavaEditor.this.equals(partRef.getPart(false))) {
				cancel();
				toggleFolding();
			}
		}
		/*
		 * @see org.eclipse.ui.IPartListener2#partClosed(org.eclipse.ui.IWorkbenchPartReference)
		 */
		public void partClosed(IWorkbenchPartReference partRef) {
			if (JavaEditor.this.equals(partRef.getPart(false))) {
				cancel();
			}
		}
		public void partActivated(IWorkbenchPartReference partRef) {}
		public void partBroughtToTop(IWorkbenchPartReference partRef) {}
		public void partDeactivated(IWorkbenchPartReference partRef) {}
		public void partOpened(IWorkbenchPartReference partRef) {}
		public void partHidden(IWorkbenchPartReference partRef) {}
		public void partInputChanged(IWorkbenchPartReference partRef) {}
	}
	
	protected final static String MATCHING_BRACKETS=  PreferenceConstants.EDITOR_MATCHING_BRACKETS;
	
	protected final static String MATCHING_BRACKETS_COLOR=  PreferenceConstants.EDITOR_MATCHING_BRACKETS_COLOR;
	protected final static char[] BRACKETS= { '{', '}', '(', ')', '[', ']', '<', '>' };
	
	protected JavaOutlinePage fOutlinePage;
	
	protected String fOutlinerContextMenuId;