142 * information see <a
143 * href="package-summary.html#threading">Swing's Threading
144 * Policy</a>.
145 * <p>
146 * <strong>Warning:</strong>
147 * Serialized objects of this class will not be compatible with
148 * future Swing releases. The current serialization support is
149 * appropriate for short term storage or RMI between applications running
150 * the same version of Swing. As of 1.4, support for long term storage
151 * of all JavaBeans™
152 * has been added to the <code>java.beans</code> package.
153 * Please see {@link java.beans.XMLEncoder}.
154 *
155 * @author David Kloba
156 * @since 1.2
157 */
158 @SuppressWarnings("serial")
159 public class JLayeredPane extends JComponent implements Accessible {
160 /// Watch the values in getObjectForLayer()
161 /** Convenience object defining the Default layer. Equivalent to new Integer(0).*/
162 public final static Integer DEFAULT_LAYER = 0;
163 /** Convenience object defining the Palette layer. Equivalent to new Integer(100).*/
164 public final static Integer PALETTE_LAYER = 100;
165 /** Convenience object defining the Modal layer. Equivalent to new Integer(200).*/
166 public final static Integer MODAL_LAYER = 200;
167 /** Convenience object defining the Popup layer. Equivalent to new Integer(300).*/
168 public final static Integer POPUP_LAYER = 300;
169 /** Convenience object defining the Drag layer. Equivalent to new Integer(400).*/
170 public final static Integer DRAG_LAYER = 400;
171 /** Convenience object defining the Frame Content layer.
172 * This layer is normally only use to position the contentPane and menuBar
173 * components of JFrame.
174 * Equivalent to new Integer(-30000).
175 * @see JFrame
176 */
177 public final static Integer FRAME_CONTENT_LAYER = new Integer(-30000);
178
179 /** Bound property */
180 public final static String LAYER_PROPERTY = "layeredContainerLayer";
181 // Hashtable to store layer values for non-JComponent components
182 private Hashtable<Component,Integer> componentToLayer;
183 private boolean optimizedDrawingPossible = true;
184
185
186 //////////////////////////////////////////////////////////////////////////////
187 //// Container Override methods
188 //////////////////////////////////////////////////////////////////////////////
189 /** Create a new JLayeredPane */
190 public JLayeredPane() {
191 setLayout(null);
192 }
193
194 private void validateOptimizedDrawing() {
195 boolean layeredComponentFound = false;
196 synchronized(getTreeLock()) {
197 Integer layer;
198
199 for (Component c : getComponents()) {
200 layer = null;
|
142 * information see <a
143 * href="package-summary.html#threading">Swing's Threading
144 * Policy</a>.
145 * <p>
146 * <strong>Warning:</strong>
147 * Serialized objects of this class will not be compatible with
148 * future Swing releases. The current serialization support is
149 * appropriate for short term storage or RMI between applications running
150 * the same version of Swing. As of 1.4, support for long term storage
151 * of all JavaBeans™
152 * has been added to the <code>java.beans</code> package.
153 * Please see {@link java.beans.XMLEncoder}.
154 *
155 * @author David Kloba
156 * @since 1.2
157 */
158 @SuppressWarnings("serial")
159 public class JLayeredPane extends JComponent implements Accessible {
160 /// Watch the values in getObjectForLayer()
161 /** Convenience object defining the Default layer. Equivalent to new Integer(0).*/
162 public static final Integer DEFAULT_LAYER = 0;
163 /** Convenience object defining the Palette layer. Equivalent to new Integer(100).*/
164 public static final Integer PALETTE_LAYER = 100;
165 /** Convenience object defining the Modal layer. Equivalent to new Integer(200).*/
166 public static final Integer MODAL_LAYER = 200;
167 /** Convenience object defining the Popup layer. Equivalent to new Integer(300).*/
168 public static final Integer POPUP_LAYER = 300;
169 /** Convenience object defining the Drag layer. Equivalent to new Integer(400).*/
170 public static final Integer DRAG_LAYER = 400;
171 /** Convenience object defining the Frame Content layer.
172 * This layer is normally only use to position the contentPane and menuBar
173 * components of JFrame.
174 * Equivalent to new Integer(-30000).
175 * @see JFrame
176 */
177 public static final Integer FRAME_CONTENT_LAYER = new Integer(-30000);
178
179 /** Bound property */
180 public static final String LAYER_PROPERTY = "layeredContainerLayer";
181 // Hashtable to store layer values for non-JComponent components
182 private Hashtable<Component,Integer> componentToLayer;
183 private boolean optimizedDrawingPossible = true;
184
185
186 //////////////////////////////////////////////////////////////////////////////
187 //// Container Override methods
188 //////////////////////////////////////////////////////////////////////////////
189 /** Create a new JLayeredPane */
190 public JLayeredPane() {
191 setLayout(null);
192 }
193
194 private void validateOptimizedDrawing() {
195 boolean layeredComponentFound = false;
196 synchronized(getTreeLock()) {
197 Integer layer;
198
199 for (Component c : getComponents()) {
200 layer = null;
|