Bug 85147 [Preferences] filter field: Looses focus on type
20050208 When you type in the filter field, the focus ofter switched to the tree. You have to give the filter field the focus again to continue typing
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferenceDialog.java
*            the message, or <code>null</code> to clear the message
	 * @param newType
	 *            the message type
	 * @since 2.0
	 */
	public void setMessage(String newMessage, int newType) {
		messageArea.updateText(newMessage, newType);
	}
	/**
	 * Sets the minimum page size.
	 * 
	 * @param minWidth
	 *            the minimum page width
	 * @param minHeight
	 *            the minimum page height
	 * @see #setMinimumPageSize(Point)
	 */
	public void setMinimumPageSize(int minWidth, int minHeight) {
		minimumPageSize.x = minWidth;
		minimumPageSize.y = minHeight;
	}
	/**
	 * Sets the minimum page size.
	 * 
	 * @param size
	 *            the page size encoded as <code>new Point(width,height)</code>
	 * @see #setMinimumPageSize(int,int)
	 */
	public void setMinimumPageSize(Point size) {
		minimumPageSize.x = size.x;