Bug 37884 Show Type hierarchy scalability problem
corner case but... 1) Open Object 2) select toString in the editor 3) ctrl-t 4) type T to filter the list ->this takes minutes The filtering is done after every keystroke. A first improvement is to do the refiltering after a time out. Another solution is to use the separate thread solution as is done in the ElementListSelectionDialog
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/AbstractInformationControl.java
fBorderSize= borderSize;
		}
		/**
		 * Returns the border size.
		 */
		public int getBorderSize() {
			return fBorderSize;
		}
		/*
		 * @see org.eclipse.swt.widgets.Layout#computeSize(org.eclipse.swt.widgets.Composite, int, int, boolean)
		 */
		protected Point computeSize(Composite composite, int wHint, int hHint, boolean flushCache) {
			Control[] children= composite.getChildren();
			Point minSize= new Point(0, 0);
			if (children != null) {
				for (int i= 0; i < children.length; i++) {
					Point size= children[i].computeSize(wHint, hHint, flushCache);
					minSize.x= Math.max(minSize.x, size.x);
					minSize.y= Math.max(minSize.y, size.y);
				}
			}
			minSize.x += fBorderSize * 2 + RIGHT_MARGIN;
			minSize.y += fBorderSize * 2;
			return minSize;
		}
		/*
		 * @see org.eclipse.swt.widgets.Layout#layout(org.eclipse.swt.widgets.Composite, boolean)
		 */
		protected void layout(Composite composite, boolean flushCache) {
			Control[] children= composite.getChildren();