Bug 40787 [plan item] Affordance for F2 opportunity in Java editor
There should be a small label explaining that F2 pins the hover.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/java/hover/AbstractJavaEditorTextHover.java
/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.ui.text.java.hover;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.jdt.core.ICodeAssist;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.ui.IWorkingCopyManager;
import org.eclipse.jdt.ui.text.java.hover.IJavaEditorTextHover;
import org.eclipse.jdt.internal.ui.JavaPlugin;
import org.eclipse.jdt.internal.ui.javaeditor.IClassFileEditorInput;
import org.eclipse.jdt.internal.ui.text.JavaWordFinder;
/**
 * Abstract class for providing hover information for Java elements.
 * 
 * @since 2.1
 */
public abstract class AbstractJavaEditorTextHover implements IJavaEditorTextHover {