| /* | |
| * Copyright (c) 2009, 2024, Oracle and/or its affiliates. All rights reserved. | |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| * | |
| * This code is free software; you can redistribute it and/or modify it | |
| * under the terms of the GNU General Public License version 2 only, as | |
| * published by the Free Software Foundation. Oracle designates this | |
| * particular file as subject to the "Classpath" exception as provided | |
| * by Oracle in the LICENSE file that accompanied this code. | |
| * | |
| * This code is distributed in the hope that it will be useful, but WITHOUT | |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| * version 2 for more details (a copy is included in the LICENSE file that | |
| * accompanied this code). | |
| * | |
| * You should have received a copy of the GNU General Public License version | |
| * 2 along with this work; if not, write to the Free Software Foundation, | |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| * | |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| * or visit www.oracle.com if you need additional information or have any | |
| * questions. | |
| */ | |
| package javax.swing.plaf; | |
| import javax.swing.*; | |
| import java.awt.*; | |
| import java.awt.event.*; | |
| import java.beans.PropertyChangeEvent; | |
| import java.beans.PropertyChangeSupport; | |
| import java.beans.PropertyChangeListener; | |
| import java.io.Serializable; | |
| /** | |
| * The base class for all {@link javax.swing.JLayer}'s UI delegates. | |
| * <p> | |
| * {@link #paint(java.awt.Graphics, javax.swing.JComponent)} method performs the | |
| * painting of the {@code JLayer} | |
| * and {@link #eventDispatched(AWTEvent, JLayer)} method is notified | |
| * about any {@code AWTEvent}s which have been generated by a {@code JLayer} | |
| * or any of its subcomponents. | |
| * <p> | |
| * The {@code LayerUI} differs from the UI delegates of the other components, | |
| * because it is LookAndFeel independent and is not updated by default when | |
| * the system LookAndFeel is changed. | |
| * <p> | |
| * The subclasses of {@code LayerUI} can either be stateless and shareable | |
| * by multiple {@code JLayer}s or not shareable. | |
| * | |
| * @param <V> one of the super types of {@code JLayer}'s view component | |
| * | |
| * @see JLayer#setUI(LayerUI) | |
| * @see JLayer#setView(Component) | |
| * @see JLayer#getView() | |
| * @since 1.7 | |
| * | |
| * @author Alexander Potochkin | |
| */ | |
| @SuppressWarnings("serial") // Same-version serialization only | |
| public class LayerUI<V extends Component> | |
| extends ComponentUI implements Serializable { | |
| private final PropertyChangeSupport propertyChangeSupport = | |
| new PropertyChangeSupport(this); | |
| /** | |
| * Constructs a {@code LayerUI}. | |
| */ | |
| public LayerUI() {} | |
| /** | |
| * Paints the specified component. | |
| * Subclasses should override this method and use | |
| * the specified {@code Graphics} object to | |
| * render the content of the component. | |
| * <p> | |
| * The default implementation paints the passed component as is. | |
| * | |
| * @param g the {@code Graphics} context in which to paint | |
| * @param c the component being painted | |
| */ | |
| public void paint(Graphics g, JComponent c) { | |
| c.paint(g); | |
| } | |
| /** | |
| * Processes {@code AWTEvent}s for {@code JLayer} | |
| * and <b>all its descendants</b> to this {@code LayerUI} instance. | |
| * <p> | |
| * To enable the {@code AWTEvent}s of a particular type, | |
| * you call {@link JLayer#setLayerEventMask} | |
| * in {@link #installUI(javax.swing.JComponent)} | |
| * and set the layer event mask to {@code 0} | |
| * in {@link #uninstallUI(javax.swing.JComponent)} after that. | |
| * By default this method calls the appropriate | |
| * {@code process<event} {@code type>Event} | |
| * method for the given class of event. | |
| * <p> | |
| * <b>Note:</b> Events are processed only for displayable {@code JLayer}s. | |
| * | |
| * @param e the event to be dispatched | |
| * @param l the layer this LayerUI is set to | |
| * | |
| * @see JLayer#setLayerEventMask(long) | |
| * @see Component#isDisplayable() | |
| * @see #processComponentEvent | |
| * @see #processFocusEvent | |
| * @see #processKeyEvent | |
| * @see #processMouseEvent | |
| * @see #processMouseMotionEvent | |
| * @see #processInputMethodEvent | |
| * @see #processHierarchyEvent | |
| * @see #processMouseWheelEvent | |
| */ | |
| public void eventDispatched(AWTEvent e, JLayer<? extends V> l){ | |
| if (e instanceof FocusEvent) { | |
| processFocusEvent((FocusEvent)e, l); | |
| } else if (e instanceof MouseEvent) { | |
| switch(e.getID()) { | |
| case MouseEvent.MOUSE_PRESSED: | |
| case MouseEvent.MOUSE_RELEASED: | |
| case MouseEvent.MOUSE_CLICKED: | |
| case MouseEvent.MOUSE_ENTERED: | |
| case MouseEvent.MOUSE_EXITED: | |
| processMouseEvent((MouseEvent)e, l); | |
| break; | |
| case MouseEvent.MOUSE_MOVED: | |
| case MouseEvent.MOUSE_DRAGGED: | |
| processMouseMotionEvent((MouseEvent)e, l); | |
| break; | |
| case MouseEvent.MOUSE_WHEEL: | |
| processMouseWheelEvent((MouseWheelEvent)e, l); | |
| break; | |
| } | |
| } else if (e instanceof KeyEvent) { | |
| processKeyEvent((KeyEvent)e, l); | |
| } else if (e instanceof ComponentEvent) { | |
| processComponentEvent((ComponentEvent)e, l); | |
| } else if (e instanceof InputMethodEvent) { | |
| processInputMethodEvent((InputMethodEvent)e, l); | |
| } else if (e instanceof HierarchyEvent) { | |
| switch (e.getID()) { | |
| case HierarchyEvent.HIERARCHY_CHANGED: | |
| processHierarchyEvent((HierarchyEvent)e, l); | |
| break; | |
| case HierarchyEvent.ANCESTOR_MOVED: | |
| case HierarchyEvent.ANCESTOR_RESIZED: | |
| processHierarchyBoundsEvent((HierarchyEvent)e, l); | |
| break; | |
| } | |
| } | |
| } | |
| /** | |
| * Processes component events occurring on the {@link JLayer} | |
| * or any of its subcomponents. | |
| * <p> | |
| * This method is not called unless component events are | |
| * enabled for the {@code JLayer} objects, this {@code LayerUI} is set to. | |
| * Component events are enabled in the overridden {@link #installUI} method | |
| * and should be disabled in the {@link #uninstallUI} method after that. | |
| * <pre> | |
| * public void installUI(JComponent c) { | |
| * super.installUI(c); | |
| * JLayer l = (JLayer) c; | |
| * l.setLayerEventMask(AWTEvent.COMPONENT_EVENT_MASK); | |
| * } | |
| * | |
| * public void uninstallUI(JComponent c) { | |
| * super.uninstallUI(c); | |
| * JLayer l = (JLayer) c; | |
| * l.setLayerEventMask(0); | |
| * } | |
| * </pre> | |
| * | |
| * @param e the {@code ComponentEvent} to be processed | |
| * @param l the layer this {@code LayerUI} instance is set to | |
| * | |
| * @see JLayer#setLayerEventMask(long) | |
| * @see #installUI(javax.swing.JComponent) | |
| * @see #uninstallUI(javax.swing.JComponent) | |
| */ | |
| protected void processComponentEvent(ComponentEvent e, JLayer<? extends V> l) { | |
| } | |
| /** | |
| * Processes focus events occurring on the {@link JLayer} | |
| * or any of its subcomponents. | |
| * <p> | |
| * This method is not called unless focus events are | |
| * enabled for the {@code JLayer} objects, this {@code LayerUI} is set to. | |
| * Focus events are enabled in the overridden {@link #installUI} method | |
| * and should be disabled in the {@link #uninstallUI} method after that. | |
| * <pre> | |
| * public void installUI(JComponent c) { | |
| * super.installUI(c); | |
| * JLayer l = (JLayer) c; | |
| * l.setLayerEventMask(AWTEvent.FOCUS_EVENT_MASK); | |
| * } | |
| * | |
| * public void uninstallUI(JComponent c) { | |
| * super.uninstallUI(c); | |
| * JLayer l = (JLayer) c; | |
| * l.setLayerEventMask(0); | |
| * } | |
| * </pre> | |
| * | |
| * @param e the {@code FocusEvent} to be processed | |
| * @param l the layer this {@code LayerUI} instance is set to | |
| * | |
| * @see JLayer#setLayerEventMask(long) | |
| * @see #installUI(javax.swing.JComponent) | |
| * @see #uninstallUI(javax.swing.JComponent) | |
| */ | |
| protected void processFocusEvent(FocusEvent e, JLayer<? extends V> l) { | |
| } | |
| /** | |
| * Processes key events occurring on the {@link JLayer} | |
| * or any of its subcomponents. | |
| * <p> | |
| * This method is not called unless key events are | |
| * enabled for the {@code JLayer} objects, this {@code LayerUI} is set to. | |
| * Key events are enabled in the overridden {@link #installUI} method | |
| * and should be disabled in the {@link #uninstallUI} method after that. | |
| * <pre> | |
| * public void installUI(JComponent c) { | |
| * super.installUI(c); | |
| * JLayer l = (JLayer) c; | |
| * l.setLayerEventMask(AWTEvent.KEY_EVENT_MASK); | |
| * } | |
| * | |
| * public void uninstallUI(JComponent c) { | |
| * super.uninstallUI(c); | |
| * JLayer l = (JLayer) c; | |
| * l.setLayerEventMask(0); | |
| * } | |
| * </pre> | |
| * | |
| * @param e the {@code KeyEvent} to be processed | |
| * @param l the layer this {@code LayerUI} instance is set to | |
| * | |
| * @see JLayer#setLayerEventMask(long) | |
| * @see #installUI(javax.swing.JComponent) | |
| * @see #uninstallUI(javax.swing.JComponent) | |
| */ | |
| protected void processKeyEvent(KeyEvent e, JLayer<? extends V> l) { | |
| } | |
| /** | |
| * Processes mouse events occurring on the {@link JLayer} | |
| * or any of its subcomponents. | |
| * <p> | |
| * This method is not called unless mouse events are | |
| * enabled for the {@code JLayer} objects, this {@code LayerUI} is set to. | |
| * Mouse events are enabled in the overridden {@link #installUI} method | |
| * and should be disabled in the {@link #uninstallUI} method after that. | |
| * <pre> | |
| * public void installUI(JComponent c) { | |
| * super.installUI(c); | |
| * JLayer l = (JLayer) c; | |
| * l.setLayerEventMask(AWTEvent.MOUSE_EVENT_MASK); | |
| * } | |
| * | |
| * public void uninstallUI(JComponent c) { | |
| * super.uninstallUI(c); | |
| * JLayer l = (JLayer) c; | |
| * l.setLayerEventMask(0); | |
| * } | |
| * </pre> | |
| * | |
| * @param e the {@code MouseEvent} to be processed | |
| * @param l the layer this {@code LayerUI} instance is set to | |
| * | |
| * @see JLayer#setLayerEventMask(long) | |
| * @see #installUI(javax.swing.JComponent) | |
| * @see #uninstallUI(javax.swing.JComponent) | |
| */ | |
| protected void processMouseEvent(MouseEvent e, JLayer<? extends V> l) { | |
| } | |
| /** | |
| * Processes mouse motion event occurring on the {@link JLayer} | |
| * or any of its subcomponents. | |
| * <p> | |
| * This method is not called unless mouse motion events are | |
| * enabled for the {@code JLayer} objects, this {@code LayerUI} is set to. | |
| * Mouse motion events are enabled in the overridden {@link #installUI} method | |
| * and should be disabled in the {@link #uninstallUI} method after that. | |
| * <pre> | |
| * public void installUI(JComponent c) { | |
| * super.installUI(c); | |
| * JLayer l = (JLayer) c; | |
| * l.setLayerEventMask(AWTEvent.MOUSE_MOTION_EVENT_MASK); | |
| * } | |
| * | |
| * public void uninstallUI(JComponent c) { | |
| * super.uninstallUI(c); | |
| * JLayer l = (JLayer) c; | |
| * l.setLayerEventMask(0); | |
| * } | |
| * </pre> | |
| * | |
| * @param e the {@code MouseEvent} to be processed | |
| * @param l the layer this {@code LayerUI} instance is set to | |
| * | |
| * @see JLayer#setLayerEventMask(long) | |
| * @see #installUI(javax.swing.JComponent) | |
| * @see #uninstallUI(javax.swing.JComponent) | |
| */ | |
| protected void processMouseMotionEvent(MouseEvent e, JLayer<? extends V> l) { | |
| } | |
| /** | |
| * Processes mouse wheel event occurring on the {@link JLayer} | |
| * or any of its subcomponents. | |
| * <p> | |
| * This method is not called unless mouse wheel events are | |
| * enabled for the {@code JLayer} objects, this {@code LayerUI} is set to. | |
| * Mouse wheel events are enabled in the overridden {@link #installUI} method | |
| * and should be disabled in the {@link #uninstallUI} method after that. | |
| * <pre> | |
| * public void installUI(JComponent c) { | |
| * super.installUI(c); | |
| * JLayer l = (JLayer) c; | |
| * l.setLayerEventMask(AWTEvent.MOUSE_WHEEL_EVENT_MASK); | |
| * } | |
| * | |
| * public void uninstallUI(JComponent c) { | |
| * super.uninstallUI(c); | |
| * JLayer l = (JLayer) c; | |
| * l.setLayerEventMask(0); | |
| * } | |
| * </pre> | |
| * | |
| * @param e the {@code MouseEvent} to be processed | |
| * @param l the layer this {@code LayerUI} instance is set to | |
| * | |
| * @see JLayer#setLayerEventMask(long) | |
| * @see #installUI(javax.swing.JComponent) | |
| * @see #uninstallUI(javax.swing.JComponent) | |
| */ | |
| protected void processMouseWheelEvent(MouseWheelEvent e, JLayer<? extends V> l) { | |
| } | |
| /** | |
| * Processes input event occurring on the {@link JLayer} | |
| * or any of its subcomponents. | |
| * <p> | |
| * This method is not called unless input events are | |
| * enabled for the {@code JLayer} objects, this {@code LayerUI} is set to. | |
| * Input events are enabled in the overridden {@link #installUI} method | |
| * and should be disabled in the {@link #uninstallUI} method after that. | |
| * <pre> | |
| * public void installUI(JComponent c) { | |
| * super.installUI(c); | |
| * JLayer l = (JLayer) c; | |
| * l.setLayerEventMask(AWTEvent.INPUT_METHOD_EVENT_MASK); | |
| * } | |
| * | |
| * public void uninstallUI(JComponent c) { | |
| * super.uninstallUI(c); | |
| * JLayer l = (JLayer) c; | |
| * l.setLayerEventMask(0); | |
| * } | |
| * </pre> | |
| * | |
| * @param e the {@code InputMethodEvent} to be processed | |
| * @param l the layer this {@code LayerUI} instance is set to | |
| * | |
| * @see JLayer#setLayerEventMask(long) | |
| * @see #installUI(javax.swing.JComponent) | |
| * @see #uninstallUI(javax.swing.JComponent) | |
| */ | |
| protected void processInputMethodEvent(InputMethodEvent e, JLayer<? extends V> l) { | |
| } | |
| /** | |
| * Processes hierarchy event occurring on the {@link JLayer} | |
| * or any of its subcomponents. | |
| * <p> | |
| * This method is not called unless hierarchy events are | |
| * enabled for the {@code JLayer} objects, this {@code LayerUI} is set to. | |
| * Hierarchy events are enabled in the overridden {@link #installUI} method | |
| * and should be disabled in the {@link #uninstallUI} method after that. | |
| * <pre> | |
| * public void installUI(JComponent c) { | |
| * super.installUI(c); | |
| * JLayer l = (JLayer) c; | |
| * l.setLayerEventMask(AWTEvent.HIERARCHY_EVENT_MASK); | |
| * } | |
| * | |
| * public void uninstallUI(JComponent c) { | |
| * super.uninstallUI(c); | |
| * JLayer l = (JLayer) c; | |
| * l.setLayerEventMask(0); | |
| * } | |
| * </pre> | |
| * | |
| * @param e the {@code HierarchyEvent} to be processed | |
| * @param l the layer this {@code LayerUI} instance is set to | |
| * | |
| * @see JLayer#setLayerEventMask(long) | |
| * @see #installUI(javax.swing.JComponent) | |
| * @see #uninstallUI(javax.swing.JComponent) | |
| */ | |
| protected void processHierarchyEvent(HierarchyEvent e, JLayer<? extends V> l) { | |
| } | |
| /** | |
| * Processes hierarchy bounds event occurring on the {@link JLayer} | |
| * or any of its subcomponents. | |
| * <p> | |
| * This method is not called unless hierarchy bounds events are | |
| * enabled for the {@code JLayer} objects, this {@code LayerUI} is set to. | |
| * Hierarchy bounds events are enabled in the overridden {@link #installUI} | |
| * method and should be disabled in the {@link #uninstallUI} method after that. | |
| * <pre> | |
| * public void installUI(JComponent c) { | |
| * super.installUI(c); | |
| * JLayer l = (JLayer) c; | |
| * l.setLayerEventMask(AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK); | |
| * } | |
| * | |
| * public void uninstallUI(JComponent c) { | |
| * super.uninstallUI(c); | |
| * JLayer l = (JLayer) c; | |
| * l.setLayerEventMask(0); | |
| * } | |
| * </pre> | |
| * | |
| * @param e the {@code HierarchyEvent} to be processed | |
| * @param l the layer this {@code LayerUI} instance is set to | |
| * | |
| * @see JLayer#setLayerEventMask(long) | |
| * @see #installUI(javax.swing.JComponent) | |
| * @see #uninstallUI(javax.swing.JComponent) | |
| */ | |
| protected void processHierarchyBoundsEvent(HierarchyEvent e, JLayer<? extends V> l) { | |
| } | |
| /** | |
| * Invoked when {@link javax.swing.JLayer#updateUI()} is called | |
| * by the {@code JLayer} this {@code LayerUI} is set to. | |
| * | |
| * @param l the {@code JLayer} which UI is updated | |
| */ | |
| public void updateUI(JLayer<? extends V> l){ | |
| } | |
| /** | |
| * Configures the {@code JLayer} this {@code LayerUI} is set to. | |
| * The default implementation registers the passed {@code JLayer} component | |
| * as a {@code PropertyChangeListener} for the property changes of this {@code LayerUI}. | |
| * | |
| * @param c the {@code JLayer} component where this UI delegate is being installed | |
| */ | |
| public void installUI(JComponent c) { | |
| addPropertyChangeListener((JLayer) c); | |
| } | |
| /** | |
| * Reverses the configuration which was previously set | |
| * in the {@link #installUI(JComponent)} method. | |
| * The default implementation unregisters the passed {@code JLayer} component | |
| * as a {@code PropertyChangeListener} for the property changes of this {@code LayerUI}. | |
| * | |
| * @param c the component from which this UI delegate is being removed. | |
| */ | |
| public void uninstallUI(JComponent c) { | |
| removePropertyChangeListener((JLayer) c); | |
| } | |
| /** | |
| * Adds a PropertyChangeListener to the listener list. The listener is | |
| * registered for all bound properties of this class. | |
| * <p> | |
| * If {@code listener} is {@code null}, | |
| * no exception is thrown and no action is performed. | |
| * | |
| * @param listener the property change listener to be added | |
| * @see #removePropertyChangeListener | |
| * @see #getPropertyChangeListeners | |
| * @see #addPropertyChangeListener(String, java.beans.PropertyChangeListener) | |
| */ | |
| public void addPropertyChangeListener(PropertyChangeListener listener) { | |
| propertyChangeSupport.addPropertyChangeListener(listener); | |
| } | |
| /** | |
| * Removes a PropertyChangeListener from the listener list. This method | |
| * should be used to remove PropertyChangeListeners that were registered | |
| * for all bound properties of this class. | |
| * <p> | |
| * If {@code listener} is {@code null}, | |
| * no exception is thrown and no action is performed. | |
| * | |
| * @param listener the PropertyChangeListener to be removed | |
| * @see #addPropertyChangeListener | |
| * @see #getPropertyChangeListeners | |
| * @see #removePropertyChangeListener(String, PropertyChangeListener) | |
| */ | |
| public void removePropertyChangeListener(PropertyChangeListener listener) { | |
| propertyChangeSupport.removePropertyChangeListener(listener); | |
| } | |
| /** | |
| * Returns an array of all the property change listeners | |
| * registered on this component. | |
| * | |
| * @return all of this ui's {@code PropertyChangeListener}s | |
| * or an empty array if no property change | |
| * listeners are currently registered | |
| * @see #addPropertyChangeListener | |
| * @see #removePropertyChangeListener | |
| * @see #getPropertyChangeListeners(String) | |
| */ | |
| public PropertyChangeListener[] getPropertyChangeListeners() { | |
| return propertyChangeSupport.getPropertyChangeListeners(); | |
| } | |
| /** | |
| * Adds a PropertyChangeListener to the listener list for a specific | |
| * property. | |
| * <p> | |
| * If {@code propertyName} or {@code listener} is {@code null}, | |
| * no exception is thrown and no action is taken. | |
| * | |
| * @param propertyName one of the property names listed above | |
| * @param listener the property change listener to be added | |
| * @see #removePropertyChangeListener(String, PropertyChangeListener) | |
| * @see #getPropertyChangeListeners(String) | |
| * @see #addPropertyChangeListener(String, PropertyChangeListener) | |
| */ | |
| public void addPropertyChangeListener(String propertyName, | |
| PropertyChangeListener listener) { | |
| propertyChangeSupport.addPropertyChangeListener(propertyName, listener); | |
| } | |
| /** | |
| * Removes a {@code PropertyChangeListener} from the listener | |
| * list for a specific property. This method should be used to remove | |
| * {@code PropertyChangeListener}s | |
| * that were registered for a specific bound property. | |
| * <p> | |
| * If {@code propertyName} or {@code listener} is {@code null}, | |
| * no exception is thrown and no action is taken. | |
| * | |
| * @param propertyName a valid property name | |
| * @param listener the PropertyChangeListener to be removed | |
| * @see #addPropertyChangeListener(String, PropertyChangeListener) | |
| * @see #getPropertyChangeListeners(String) | |
| * @see #removePropertyChangeListener(PropertyChangeListener) | |
| */ | |
| public void removePropertyChangeListener(String propertyName, | |
| PropertyChangeListener listener) { | |
| propertyChangeSupport.removePropertyChangeListener(propertyName, listener); | |
| } | |
| /** | |
| * Returns an array of all the listeners which have been associated | |
| * with the named property. | |
| * | |
| * @param propertyName The name of the property being listened to | |
| * @return all of the {@code PropertyChangeListener}s associated with | |
| * the named property; if no such listeners have been added or | |
| * if {@code propertyName} is {@code null}, an empty | |
| * array is returned | |
| * @see #addPropertyChangeListener(String, PropertyChangeListener) | |
| * @see #removePropertyChangeListener(String, PropertyChangeListener) | |
| * @see #getPropertyChangeListeners | |
| */ | |
| public PropertyChangeListener[] getPropertyChangeListeners(String propertyName) { | |
| return propertyChangeSupport.getPropertyChangeListeners(propertyName); | |
| } | |
| /** | |
| * Support for reporting bound property changes for Object properties. | |
| * This method can be called when a bound property has changed and it will | |
| * send the appropriate PropertyChangeEvent to any registered | |
| * PropertyChangeListeners. | |
| * | |
| * @param propertyName the property whose value has changed | |
| * @param oldValue the property's previous value | |
| * @param newValue the property's new value | |
| */ | |
| protected void firePropertyChange(String propertyName, | |
| Object oldValue, Object newValue) { | |
| propertyChangeSupport.firePropertyChange(propertyName, oldValue, newValue); | |
| } | |
| /** | |
| * Notifies the {@code LayerUI} when any of its property are changed | |
| * and enables updating every {@code JLayer} | |
| * this {@code LayerUI} instance is set to. | |
| * | |
| * @param evt the PropertyChangeEvent generated by this {@code LayerUI} | |
| * @param l the {@code JLayer} this LayerUI is set to | |
| */ | |
| public void applyPropertyChange(PropertyChangeEvent evt, JLayer<? extends V> l) { | |
| } | |
| /** | |
| * If the {@code JLayer}'s view component is not {@code null}, | |
| * this calls the view's {@code getBaseline()} method. | |
| * Otherwise, the default implementation is called. | |
| * | |
| * @param c {@code JLayer} to return baseline resize behavior for | |
| * @param width the width to get the baseline for | |
| * @param height the height to get the baseline for | |
| * @return baseline or a value < 0 indicating there is no reasonable | |
| * baseline | |
| */ | |
| public int getBaseline(JComponent c, int width, int height) { | |
| JLayer<?> l = (JLayer) c; | |
| if (l.getView() != null) { | |
| return l.getView().getBaseline(width, height); | |
| } | |
| return super.getBaseline(c, width, height); | |
| } | |
| /** | |
| * If the {@code JLayer}'s view component is not {@code null}, | |
| * this returns the result of the view's {@code getBaselineResizeBehavior()} method. | |
| * Otherwise, the default implementation is called. | |
| * | |
| * @param c {@code JLayer} to return baseline resize behavior for | |
| * @return an enum indicating how the baseline changes as the component | |
| * size changes | |
| */ | |
| public Component.BaselineResizeBehavior getBaselineResizeBehavior(JComponent c) { | |
| JLayer<?> l = (JLayer) c; | |
| if (l.getView() != null) { | |
| return l.getView().getBaselineResizeBehavior(); | |
| } | |
| return super.getBaselineResizeBehavior(c); | |
| } | |
| /** | |
| * Causes the passed instance of {@code JLayer} to lay out its components. | |
| * | |
| * @param l the {@code JLayer} component where this UI delegate is being installed | |
| */ | |
| public void doLayout(JLayer<? extends V> l) { | |
| Component view = l.getView(); | |
| if (view != null) { | |
| view.setBounds(0, 0, l.getWidth(), l.getHeight()); | |
| } | |
| Component glassPane = l.getGlassPane(); | |
| if (glassPane != null) { | |
| glassPane.setBounds(0, 0, l.getWidth(), l.getHeight()); | |
| } | |
| } | |
| /** | |
| * If the {@code JLayer}'s view component is not {@code null}, | |
| * this returns the result of the view's {@code getPreferredSize()} method. | |
| * Otherwise, the default implementation is used. | |
| * | |
| * @param c {@code JLayer} to return preferred size for | |
| * @return preferred size for the passed {@code JLayer} | |
| */ | |
| public Dimension getPreferredSize(JComponent c) { | |
| JLayer<?> l = (JLayer) c; | |
| Component view = l.getView(); | |
| if (view != null) { | |
| return view.getPreferredSize(); | |
| } | |
| return super.getPreferredSize(c); | |
| } | |
| /** | |
| * If the {@code JLayer}'s view component is not {@code null}, | |
| * this returns the result of the view's {@code getMinimalSize()} method. | |
| * Otherwise, the default implementation is used. | |
| * | |
| * @param c {@code JLayer} to return preferred size for | |
| * @return minimal size for the passed {@code JLayer} | |
| */ | |
| public Dimension getMinimumSize(JComponent c) { | |
| JLayer<?> l = (JLayer) c; | |
| Component view = l.getView(); | |
| if (view != null) { | |
| return view.getMinimumSize(); | |
| } | |
| return super.getMinimumSize(c); | |
| } | |
| /** | |
| * If the {@code JLayer}'s view component is not {@code null}, | |
| * this returns the result of the view's {@code getMaximumSize()} method. | |
| * Otherwise, the default implementation is used. | |
| * | |
| * @param c {@code JLayer} to return preferred size for | |
| * @return maximum size for the passed {@code JLayer} | |
| */ | |
| public Dimension getMaximumSize(JComponent c) { | |
| JLayer<?> l = (JLayer) c; | |
| Component view = l.getView(); | |
| if (view != null) { | |
| return view.getMaximumSize(); | |
| } | |
| return super.getMaximumSize(c); | |
| } | |
| /** | |
| * Paints the specified region in the {@code JLayer} this {@code LayerUI} is set to, immediately. | |
| * <p> | |
| * This method is to be overridden when the dirty region needs to be changed. | |
| * The default implementation delegates its functionality to {@link JComponent#paintImmediately(int, int, int, int)}. | |
| * | |
| * @param x the x value of the region to be painted | |
| * @param y the y value of the region to be painted | |
| * @param width the width of the region to be painted | |
| * @param height the height of the region to be painted | |
| * @param l a {@code JLayer} component | |
| * @see JComponent#paintImmediately(int, int, int, int) | |
| */ | |
| public void paintImmediately(int x, int y, int width, int height, JLayer<? extends V> l) { | |
| l.paintImmediately(x, y, width, height); | |
| } | |
| /** | |
| * Delegates its functionality to the default implementation of the {@code JLayer.imageUpdate} method | |
| * which is inherited from {@code JLayer}'s base classes. | |
| * <p> | |
| * This method is to be overridden instead of {@code JLayer.imageUpdate}. | |
| * <p> | |
| * <b>Note:</b> This method is usually called <b>not</b> on the Event Dispatching Thread. | |
| * | |
| * @param img the image being observed | |
| * @param infoflags see imageUpdate for information | |
| * @param x the x coordinate | |
| * @param y the y coordinate | |
| * @param w the width | |
| * @param h the height | |
| * @param l a {@code JLayer} component | |
| * @return false if the infoflags indicate that the image is completely loaded; true otherwise | |
| */ | |
| public boolean imageUpdate(Image img, int infoflags, int x, int y, int w, int h, JLayer<? extends V> l) { | |
| return l.imageUpdate(img, infoflags, x, y, w, h); | |
| } | |
| } |