Bug 16938 DCR: Class File Editor should scroll more naturally
20020521 (F1) (This may not be a debug PR - I wasn't sure). - put a breakpoint in a java file, right before a System.out.println statement - debug to the breakpoint - step in to the println call (I happened to go in to StringBuffer first - all that matters is that you do not have the source for the class you just stepped into) - a Class File Editor opens - click on the scrollbar's down arrow Problem: the editor only scrolls one pixel at a time. It should scroll one line at a time when you click on the arrows. - click on the scrollbar's background to scroll a page at a time Problem: the editor only scrolls about a line at a time when it should be scrolling a page at a time. Grabbing the thumb and scrolling with that works well. So the workaround, if the user wants to scroll through the Class File editor, is to always use the thumb.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/ClassFileEditor.java
package org.eclipse.jdt.internal.ui.javaeditor;
/*
 * (c) Copyright IBM Corp. 2000, 2001.
 * All Rights Reserved.
 */
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.ScrolledComposite;
import org.eclipse.swt.custom.StackLayout;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;