Bug 23215 Type Hierarchy: Ctrl + 1 doesn't work [type hierarchy]
Type Hierarchy allows to switch between its 3 views by hitting Ctrl + 1, Ctrl + 2, Ctrl + 3 (that's what Tooltips say). 2 & 3 work fine, but my Hierarchy doesn't react on Ctrl + 1. Maybe there's an interference with Quick Fix (Ctrl + 1 too, but only active in JavaEditors). Version: 2.0 Build id: 200208201620
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TypeHierarchyViewPart.java
if (val != null) {
			fLinkingEnabled= val.intValue() != 0;
		}
	}
	
	
	/**
	 * view part becomes visible
	 */
	protected void visibilityChanged(boolean isVisible) {
		fIsVisible= isVisible;
		if (isVisible && fNeedRefresh) {
			doTypeHierarchyChanged(fHierarchyLifeCycle, null);
		}
		fNeedRefresh= false;
	}
	
	
	/**
	 * Link selection to active editor.
	 */
	protected void editorActivated(IEditorPart editor) {
		if (!isLinkingEnabled()) {
			return;
		}
		if (fInputElement == null) {
			
			return;
		}