2229 lines
64 KiB
Java
2229 lines
64 KiB
Java
/* JComponent.java -- Every component in swing inherits from this class.
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Copyright (C) 2002, 2004 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.swing;
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import java.awt.AWTEvent;
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import java.awt.Color;
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import java.awt.Component;
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import java.awt.Container;
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import java.awt.Dimension;
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import java.awt.FlowLayout;
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import java.awt.Font;
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import java.awt.Graphics;
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import java.awt.Image;
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import java.awt.Insets;
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import java.awt.Point;
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import java.awt.Rectangle;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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import java.awt.event.ContainerEvent;
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import java.awt.event.ContainerListener;
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import java.awt.event.FocusEvent;
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import java.awt.event.FocusListener;
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import java.awt.event.KeyEvent;
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import java.awt.event.MouseEvent;
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import java.awt.geom.Rectangle2D;
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import java.awt.image.ImageObserver;
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import java.awt.peer.LightweightPeer;
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import java.beans.PropertyChangeEvent;
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import java.beans.PropertyChangeListener;
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import java.beans.PropertyVetoException;
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import java.beans.VetoableChangeListener;
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import java.io.Serializable;
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import java.util.EventListener;
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import java.util.Hashtable;
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import java.util.Locale;
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import javax.accessibility.Accessible;
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import javax.accessibility.AccessibleContext;
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import javax.accessibility.AccessibleRole;
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import javax.accessibility.AccessibleStateSet;
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import javax.swing.border.Border;
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import javax.swing.event.AncestorListener;
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import javax.swing.event.EventListenerList;
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import javax.swing.event.SwingPropertyChangeSupport;
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import javax.swing.plaf.ComponentUI;
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/**
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* Every component in swing inherits from this class (JLabel, JButton, etc).
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* It contains generic methods to manage events, properties and sizes. Actual
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* drawing of the component is channeled to a look-and-feel class that is
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* implemented elsewhere.
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*
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* @author Ronald Veldema (rveldema&064;cs.vu.nl)
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* @author Graydon Hoare (graydon&064;redhat.com)
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*/
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public abstract class JComponent extends Container implements Serializable
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{
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private static final long serialVersionUID = -7908749299918704233L;
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/**
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* Accessibility support is currently missing.
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*/
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protected AccessibleContext accessibleContext;
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public abstract class AccessibleJComponent
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extends AccessibleAWTContainer
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{
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protected class AccessibleFocusHandler
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implements FocusListener
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{
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protected AccessibleFocusHandler(){}
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public void focusGained(FocusEvent event){}
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public void focusLost(FocusEvent valevent){}
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}
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protected class AccessibleContainerHandler
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implements ContainerListener
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{
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protected AccessibleContainerHandler() {}
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public void componentAdded(ContainerEvent event) {}
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public void componentRemoved(ContainerEvent valevent) {}
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}
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private static final long serialVersionUID = -7047089700479897799L;
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protected ContainerListener accessibleContainerHandler;
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protected FocusListener accessibleFocusHandler;
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protected AccessibleJComponent() {}
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public void addPropertyChangeListener(PropertyChangeListener listener) {}
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public void removePropertyChangeListener(PropertyChangeListener listener) {}
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public int getAccessibleChildrenCount() { return 0; }
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public Accessible getAccessibleChild(int value0) { return null; }
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public AccessibleStateSet getAccessibleStateSet() { return null; }
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public String getAccessibleName() { return null; }
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public String getAccessibleDescription() { return null; }
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public AccessibleRole getAccessibleRole() { return null; }
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protected String getBorderTitle(Border value0) { return null; }
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}
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/**
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* An explicit value for the component's preferred size; if not set by a
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* user, this is calculated on the fly by delegating to the {@link
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* ComponentUI.getPreferredSize} method on the {@link #ui} property.
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*/
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Dimension preferredSize;
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/**
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* An explicit value for the component's minimum size; if not set by a
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* user, this is calculated on the fly by delegating to the {@link
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* ComponentUI.getMinimumSize} method on the {@link #ui} property.
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*/
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Dimension minimumSize;
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/**
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* An explicit value for the component's maximum size; if not set by a
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* user, this is calculated on the fly by delegating to the {@link
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* ComponentUI.getMaximumSize} method on the {@link #ui} property.
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*/
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Dimension maximumSize;
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/**
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* A value between 0.0 and 1.0 indicating the preferred horizontal
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* alignment of the component, relative to its siblings. The values
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* {@link #LEFT_ALIGNMENT}, {@link #CENTER_ALIGNMENT}, and {@link
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* #RIGHT_ALIGNMENT} can also be used, as synonyms for <code>0.0</code>,
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* <code>0.5</code>, and <code>1.0</code>, respectively. Not all layout
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* managers use this property.
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*
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* @see #getAlignmentX
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* @see #setAlignmentX
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* @see javax.swing.OverlayLayout
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* @see javax.swing.BoxLayout
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*/
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float alignmentX = 0.0f;
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/**
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* A value between 0.0 and 1.0 indicating the preferred vertical
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* alignment of the component, relative to its siblings. The values
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* {@link #TOP_ALIGNMENT}, {@link #CENTER_ALIGNMENT}, and {@link
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* #BOTTOM_ALIGNMENT} can also be used, as synonyms for <code>0.0</code>,
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* <code>0.5</code>, and <code>1.0</code>, respectively. Not all layout
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* managers use this property.
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*
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* @see #getAlignmentY
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* @see #setAlignmentY
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* @see javax.swing.OverlayLayout
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* @see javax.swing.BoxLayout
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*/
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float alignmentY = 0.0f;
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/**
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* The border painted around this component.
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*
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* @see #paintBorder
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*/
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Border border;
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/**
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* The text to show in the tooltip associated with this component.
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*
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* @see #setToolTipText
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* @see #getToolTipText
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*/
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String toolTipText;
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/**
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* <p>Whether to double buffer this component when painting. This flag
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* should generally be <code>false</code>, except for top level
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* components such as {@link JFrame} or {@link JApplet}.</p>
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*
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* <p>All children of a double buffered component are painted into the
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* double buffer automatically, so only the top widget in a window needs
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* to be double buffered.</p>
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*
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* @see #setDoubleBuffered
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* @see #isDoubleBuffered
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* @see #paintLock
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* @see #paint
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*/
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boolean doubleBuffered = false;
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/**
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* A set of flags indicating which debugging graphics facilities should
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* be enabled on this component. The values should be a combination of
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* {@link DebugGraphics.NONE_OPTION}, {@link DebugGraphics.LOG_OPTION},
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* {@link DebugGraphics.FLASH_OPTION}, or {@link
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* DebugGraphics.BUFFERED_OPTION}.
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*
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* @see setDebugGraphicsOptions
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* @see getDebugGraphicsOptions
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* @see DebugGraphics
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* @see getComponentGraphics
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*/
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int debugGraphicsOptions;
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/**
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* <p>This property controls two independent behaviors simultaneously.</p>
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*
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* <p>First, it controls whether to fill the background of this widget
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* when painting its body. This affects calls to {@link
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* JComponent#paintComponent}, which in turn calls {@link
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* ComponentUI#update} on the component's {@link #ui} property. If the
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* component is opaque during this call, the background will be filled
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* before calling {@link ComponentUI#paint}. This happens merely as a
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* convenience; you may fill the component's background yourself too,
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* but there is no need to do so if you will be filling with the same
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* color.</p>
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*
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* <p>Second, it the opaque property informs swing's repaint system
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* whether it will be necessary to paint the components "underneath" this
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* component, in Z-order. If the component is opaque, it is considered to
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* completely occlude components "underneath" it, so they will not be
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* repainted along with the opaque component.</p>
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*
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* <p>The default value for this property is <code>false</code>, but most
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* components will want to set it to <code>true</code> when installing UI
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* defaults in {@link ComponentUI#installUI}.</p>
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*
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* @see #setOpaque
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* @see #isOpaque
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* @see #paintComponent
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*/
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boolean opaque = false;
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/**
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* The user interface delegate for this component. Event delivery and
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* repainting of the component are usually delegated to this object.
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*
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* @see #setUI
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* @see #getUI
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* @see #updateUI
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*/
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protected ComponentUI ui;
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/**
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* A hint to the focus system that this component should or should not
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* get focus. If this is <code>false</code>, swing will not try to
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* request focus on this component; if <code>true</code>, swing might
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* try to request focus, but the request might fail. Thus it is only
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* a hint guiding swing's behavior.
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*
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* @see #requestFocus
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* @see #isRequestFocusEnabled
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* @see #setRequestFocusEnabled
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*/
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boolean requestFocusEnabled;
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/**
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* Flag indicating behavior of this component when the mouse is dragged
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* outside the component and the mouse <em>stops moving</em>. If
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* <code>true</code>, synthetic mouse events will be delivered on regular
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* timed intervals, continuing off in the direction the mouse exited the
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* component, until the mouse is released or re-enters the component.
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*
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* @see setAutoscrolls
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* @see getAutoscrolls
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*/
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boolean autoscrolls = false;
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/**
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* Listeners for events other than {@link PropertyChangeEvent} are
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* handled by this listener list. PropertyChangeEvents are handled in
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* {@link #changeSupport}.
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*/
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protected EventListenerList listenerList = new EventListenerList();
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/**
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* Support for {@link PropertyChangeEvent} events. This is constructed
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* lazily when the component gets its first {@link
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* PropertyChangeListener} subscription; until then it's an empty slot.
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*/
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private SwingPropertyChangeSupport changeSupport;
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/**
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* Storage for "client properties", which are key/value pairs associated
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* with this component by a "client", such as a user application or a
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* layout manager. This is lazily constructed when the component gets its
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* first client property.
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*/
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private Hashtable clientProperties;
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private InputMap inputMap_whenFocused;
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private InputMap inputMap_whenAncestorOfFocused;
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private InputMap inputMap_whenInFocusedWindow;
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private ActionMap actionMap;
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private InputVerifier inputVerifier;
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private TransferHandler transferHandler;
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/**
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* A lock held during recursive painting; this is used to serialize
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* access to the double buffer, and also to select the "top level"
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* object which should acquire the double buffer in a given widget
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* tree (which may have multiple double buffered children).
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*
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* @see #doubleBuffered
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* @see #paint
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*/
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private static final Object paintLock = new Object();
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/**
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* The default locale of the component.
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*
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* @see #getDefaultLocale
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* @see #setDefaultLocale
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*/
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private static Locale defaultLocale;
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public static final String TOOL_TIP_TEXT_KEY = "ToolTipText";
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/**
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* Constant used to indicate that no condition has been assigned to a
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* particular action.
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*
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* @see #registerKeyboardAction
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*/
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public static final int UNDEFINED_CONDITION = -1;
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/**
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* Constant used to indicate that an action should be performed only when
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* the component has focus.
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*
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* @see #registerKeyboardAction
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*/
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public static final int WHEN_FOCUSED = 0;
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/**
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* Constant used to indicate that an action should be performed only when
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* the component is an ancestor of the component which has focus.
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*
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* @see #registerKeyboardAction
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*/
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public static final int WHEN_ANCESTOR_OF_FOCUSED_COMPONENT = 1;
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/**
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* Constant used to indicate that an action should be performed only when
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* the component is in the window which has focus.
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*
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* @see #registerKeyboardAction
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*/
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public static final int WHEN_IN_FOCUSED_WINDOW = 2;
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/**
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* Creates a new <code>JComponent</code> instance.
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*/
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public JComponent()
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{
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super();
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super.setLayout(new FlowLayout());
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defaultLocale = Locale.getDefault();
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debugGraphicsOptions = DebugGraphics.NONE_OPTION;
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}
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/**
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* Helper to lazily construct and return the client properties table.
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*
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* @return The current client properties table
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*
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* @see #clientProperties
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* @see #getClientProperty
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* @see #putClientProperty
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*/
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private Hashtable getClientProperties()
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{
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if (clientProperties == null)
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clientProperties = new Hashtable();
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return clientProperties;
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}
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/**
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* Get a client property associated with this component and a particular
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* key.
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*
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* @param key The key with which to look up the client property
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*
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* @return A client property associated with this object and key
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*
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* @see #clientProperties
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* @see #getClientProperties
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* @see #putClientProperty
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*/
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public Object getClientProperty(Object key)
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{
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return getClientProperties().get(key);
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}
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/**
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* Add a client property <code>value</code> to this component, associated
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* with <code>key</code>. If there is an existing client property
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* associated with <code>key</code>, it will be replaced.
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*
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* @param key The key of the client property association to add
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* @param value The value of the client property association to add
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*
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* @see #clientProperties
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* @see #getClientProperties
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* @see #getClientProperty
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*/
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public void putClientProperty(Object key, Object value)
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{
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getClientProperties().put(key, value);
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}
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/**
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* Unregister an <code>AncestorListener</code>.
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*
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* @param listener The listener to unregister
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*
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* @see addAncestorListener
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*/
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public void removeAncestorListener(AncestorListener listener)
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{
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listenerList.remove(AncestorListener.class, listener);
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}
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/**
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* Unregister a <code>PropertyChangeListener</code>.
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*
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* @param listener The listener to register
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*
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* @see #addPropertyChangeListener
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* @see #changeSupport
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*/
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public void removePropertyChangeListener(PropertyChangeListener listener)
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{
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if (changeSupport != null)
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changeSupport.removePropertyChangeListener(listener);
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}
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/**
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* Unregister a <code>PropertyChangeListener</code>.
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*
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* @param propertyName The property name to unregister the listener from
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* @param listener The listener to unregister
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*
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* @see #addPropertyChangeListener
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* @see #changeSupport
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*/
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public void removePropertyChangeListener(String propertyName,
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PropertyChangeListener listener)
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{
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if (changeSupport != null)
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changeSupport.removePropertyChangeListener(propertyName, listener);
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}
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/**
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* Unregister a <code>VetoableChangeChangeListener</code>.
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*
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* @param listener The listener to unregister
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*
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* @see #addVetoableChangeListener
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*/
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public void removeVetoableChangeListener(VetoableChangeListener listener)
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{
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listenerList.remove(VetoableChangeListener.class, listener);
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}
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/**
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* Register an <code>AncestorListener</code>.
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*
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* @param listener The listener to register
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*
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* @see #removeVetoableChangeListener
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*/
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public void addAncestorListener(AncestorListener listener)
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{
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listenerList.add(AncestorListener.class, listener);
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}
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/**
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* Register a <code>PropertyChangeListener</code>. This listener will
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* receive any PropertyChangeEvent, regardless of property name. To
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* listen to a specific property name, use {@link
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* #addPropertyChangeListener(String,PropertyChangeListener)} instead.
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*
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* @param listener The listener to register
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*
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* @see #removePropertyChangeListener
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* @see #changeSupport
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*/
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public void addPropertyChangeListener(PropertyChangeListener listener)
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{
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if (changeSupport == null)
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changeSupport = new SwingPropertyChangeSupport(this);
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changeSupport.addPropertyChangeListener(listener);
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}
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/**
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* Register a <code>PropertyChangeListener</code> for a specific, named
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* property. To listen to all property changes, regardless of name, use
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* {@link #addPropertyChangeListener(PropertyChangeListener)} instead.
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*
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* @param propertyName The property name to listen to
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* @param listener The listener to register
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*
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* @see #removePropertyChangeListener
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* @see #changeSupport
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*/
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public void addPropertyChangeListener(String propertyName,
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PropertyChangeListener listener)
|
|
{
|
|
listenerList.add(PropertyChangeListener.class, listener);
|
|
}
|
|
|
|
/**
|
|
* Register a <code>VetoableChangeListener</code>.
|
|
*
|
|
* @param listener The listener to register
|
|
*
|
|
* @see #removeVetoableChangeListener
|
|
* @see #listenerList
|
|
*/
|
|
public void addVetoableChangeListener(VetoableChangeListener listener)
|
|
{
|
|
listenerList.add(VetoableChangeListener.class, listener);
|
|
}
|
|
|
|
/**
|
|
* Return all registered listeners of a particular type.
|
|
*
|
|
* @param listenerType The type of listener to return
|
|
*
|
|
* @return All listeners in the {@link #listenerList} which
|
|
* are of the specified type
|
|
*
|
|
* @see #listenerList
|
|
*/
|
|
public EventListener[] getListeners(Class listenerType)
|
|
{
|
|
return listenerList.getListeners(listenerType);
|
|
}
|
|
|
|
/**
|
|
* Return all registered <code>AncestorListener</code> objects.
|
|
*
|
|
* @return The set of <code>AncestorListener</code> objects in {@link
|
|
* #listenerList}
|
|
*/
|
|
public AncestorListener[] getAncestorListeners()
|
|
{
|
|
return (AncestorListener[]) getListeners(AncestorListener.class);
|
|
}
|
|
|
|
/**
|
|
* Return all registered <code>VetoableChangeListener</code> objects.
|
|
*
|
|
* @return The set of <code>VetoableChangeListener</code> objects in {@link
|
|
* #listenerList}
|
|
*/
|
|
public VetoableChangeListener[] getVetoableChangeListeners()
|
|
{
|
|
return (VetoableChangeListener[]) getListeners(VetoableChangeListener.class);
|
|
}
|
|
|
|
/**
|
|
* Return all <code>PropertyChangeListener</code> objects registered to listen
|
|
* for a particular property.
|
|
*
|
|
* @param property The property to return the listeners of
|
|
*
|
|
* @return The set of <code>PropertyChangeListener</code> objects in
|
|
* {@link #changeSupport} registered to listen on the specified propert
|
|
*/
|
|
public PropertyChangeListener[] getPropertyChangeListeners(String property)
|
|
{
|
|
return changeSupport == null ? new PropertyChangeListener[0]
|
|
: changeSupport.getPropertyChangeListeners(property);
|
|
}
|
|
|
|
/**
|
|
* A variant of {@link #firePropertyChange(String,Object,Object)}
|
|
* for properties with <code>boolean</code> values.
|
|
*/
|
|
public void firePropertyChange(String propertyName, boolean oldValue,
|
|
boolean newValue)
|
|
{
|
|
if (changeSupport != null)
|
|
changeSupport.firePropertyChange(propertyName, Boolean.valueOf(oldValue),
|
|
Boolean.valueOf(newValue));
|
|
}
|
|
|
|
/**
|
|
* A variant of {@link #firePropertyChange(String,Object,Object)}
|
|
* for properties with <code>byte</code> values.
|
|
*/
|
|
public void firePropertyChange(String propertyName, byte oldValue,
|
|
byte newValue)
|
|
{
|
|
if (changeSupport != null)
|
|
changeSupport.firePropertyChange(propertyName, new Byte(oldValue),
|
|
new Byte(newValue));
|
|
}
|
|
|
|
/**
|
|
* A variant of {@link #firePropertyChange(String,Object,Object)}
|
|
* for properties with <code>char</code> values.
|
|
*/
|
|
public void firePropertyChange(String propertyName, char oldValue,
|
|
char newValue)
|
|
{
|
|
if (changeSupport != null)
|
|
changeSupport.firePropertyChange(propertyName, new Character(oldValue),
|
|
new Character(newValue));
|
|
}
|
|
|
|
/**
|
|
* A variant of {@link #firePropertyChange(String,Object,Object)}
|
|
* for properties with <code>double</code> values.
|
|
*/
|
|
public void firePropertyChange(String propertyName, double oldValue,
|
|
double newValue)
|
|
{
|
|
if (changeSupport != null)
|
|
changeSupport.firePropertyChange(propertyName, new Double(oldValue),
|
|
new Double(newValue));
|
|
}
|
|
|
|
/**
|
|
* A variant of {@link #firePropertyChange(String,Object,Object)}
|
|
* for properties with <code>float</code> values.
|
|
*/
|
|
public void firePropertyChange(String propertyName, float oldValue,
|
|
float newValue)
|
|
{
|
|
if (changeSupport != null)
|
|
changeSupport.firePropertyChange(propertyName, new Float(oldValue),
|
|
new Float(newValue));
|
|
}
|
|
|
|
/**
|
|
* A variant of {@link #firePropertyChange(String,Object,Object)}
|
|
* for properties with <code>int</code> values.
|
|
*/
|
|
public void firePropertyChange(String propertyName, int oldValue,
|
|
int newValue)
|
|
{
|
|
if (changeSupport != null)
|
|
changeSupport.firePropertyChange(propertyName, new Integer(oldValue),
|
|
new Integer(newValue));
|
|
}
|
|
|
|
/**
|
|
* A variant of {@link #firePropertyChange(String,Object,Object)}
|
|
* for properties with <code>long</code> values.
|
|
*/
|
|
public void firePropertyChange(String propertyName, long oldValue,
|
|
long newValue)
|
|
{
|
|
if (changeSupport != null)
|
|
changeSupport.firePropertyChange(propertyName, new Long(oldValue),
|
|
new Long(newValue));
|
|
}
|
|
|
|
/**
|
|
* Call {@link PropertyChangeListener#propertyChange} on all listeners
|
|
* registered to listen to a given property. Any method which changes
|
|
* the specified property of this component should call this method.
|
|
*
|
|
* @param propertyName The property which changed
|
|
* @param oldValue The old value of the property
|
|
* @param newValue The new value of the property
|
|
*
|
|
* @see #changeSupport
|
|
* @see #addPropertyChangeListener
|
|
* @see #removePropertyChangeListener
|
|
*/
|
|
protected void firePropertyChange(String propertyName, Object oldValue,
|
|
Object newValue)
|
|
{
|
|
if (changeSupport != null)
|
|
changeSupport.firePropertyChange(propertyName, oldValue, newValue);
|
|
}
|
|
|
|
/**
|
|
* A variant of {@link #firePropertyChange(String,Object,Object)}
|
|
* for properties with <code>short</code> values.
|
|
*/
|
|
public void firePropertyChange(String propertyName, short oldValue,
|
|
short newValue)
|
|
{
|
|
if (changeSupport != null)
|
|
changeSupport.firePropertyChange(propertyName, new Short(oldValue),
|
|
new Short(newValue));
|
|
}
|
|
|
|
/**
|
|
* Call {@link VetoableChangeListener#vetoableChange} on all listeners
|
|
* registered to listen to a given property. Any method which changes
|
|
* the specified property of this component should call this method.
|
|
*
|
|
* @param propertyName The property which changed
|
|
* @param oldValue The old value of the property
|
|
* @param newValue The new value of the property
|
|
*
|
|
* @throws PropertyVetoException if the change was vetoed by a listener
|
|
*
|
|
* @see addVetoableChangeListener
|
|
* @see removeVetoableChangeListener
|
|
*/
|
|
protected void fireVetoableChange(String propertyName, Object oldValue,
|
|
Object newValue)
|
|
throws PropertyVetoException
|
|
{
|
|
VetoableChangeListener[] listeners = getVetoableChangeListeners();
|
|
|
|
PropertyChangeEvent evt = new PropertyChangeEvent(this, propertyName, oldValue, newValue);
|
|
|
|
for (int i = 0; i < listeners.length; i++)
|
|
listeners[i].vetoableChange(evt);
|
|
}
|
|
|
|
/**
|
|
* Get the value of the accessibleContext property for this component.
|
|
*
|
|
* @return the current value of the property
|
|
*/
|
|
public AccessibleContext getAccessibleContext()
|
|
{
|
|
return null;
|
|
}
|
|
|
|
|
|
/**
|
|
* Get the value of the {@link #alignmentX} property.
|
|
*
|
|
* @return The current value of the property.
|
|
*
|
|
* @see #setAlignmentX
|
|
* @see #alignmentY
|
|
*/
|
|
public float getAlignmentX()
|
|
{
|
|
return alignmentX;
|
|
}
|
|
|
|
/**
|
|
* Get the value of the {@link #alignmentY} property.
|
|
*
|
|
* @return The current value of the property.
|
|
*
|
|
* @see #setAlignmentY
|
|
* @see #alignmentX
|
|
*/
|
|
public float getAlignmentY()
|
|
{
|
|
return alignmentY;
|
|
}
|
|
|
|
/**
|
|
* Get the current value of the {@link #autoscrolls} property.
|
|
*
|
|
* @return The current value of the property
|
|
*/
|
|
public boolean getAutoscrolls()
|
|
{
|
|
return autoscrolls;
|
|
}
|
|
|
|
/**
|
|
* Set the value of the {@link #border} property, revalidate
|
|
* and repaint this component.
|
|
*
|
|
* @param newBorder The new value of the property
|
|
*
|
|
* @see #getBorder
|
|
*/
|
|
public void setBorder(Border newBorder)
|
|
{
|
|
Border oldBorder = border;
|
|
border = newBorder;
|
|
firePropertyChange("border", oldBorder, newBorder);
|
|
revalidate();
|
|
repaint();
|
|
}
|
|
|
|
/**
|
|
* Get the value of the {@link #border} property.
|
|
*
|
|
* @return The property's current value
|
|
*
|
|
* @see #setBorder
|
|
*/
|
|
public Border getBorder()
|
|
{
|
|
return border;
|
|
}
|
|
|
|
/**
|
|
* Get the component's current bounding box. If a rectangle is provided,
|
|
* use this as the return value (adjusting its fields in place);
|
|
* otherwise (of <code>null</code> is provided) return a new {@link
|
|
* Rectangle}.
|
|
*
|
|
* @param rv Optional return value to use
|
|
*
|
|
* @return A rectangle bounding the component
|
|
*/
|
|
public Rectangle getBounds(Rectangle rv)
|
|
{
|
|
if (rv == null)
|
|
return new Rectangle(getX(), getY(), getWidth(), getHeight());
|
|
else
|
|
{
|
|
rv.setBounds(getX(), getY(), getWidth(), getHeight());
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Prepares a graphics context for painting this object. If {@link
|
|
* #debugGraphicsOptions} is not equal to {@link
|
|
* DebugGraphics#NONE_OPTION}, produce a new {@link DebugGraphics} object
|
|
* wrapping the parameter. Otherwise configure the parameter with this
|
|
* component's foreground color and font.
|
|
*
|
|
* @param g The graphics context to wrap or configure
|
|
*
|
|
* @return A graphics context to paint this object with
|
|
*
|
|
* @see #debugGraphicsOptions
|
|
* @see #paint
|
|
*/
|
|
protected Graphics getComponentGraphics(Graphics g)
|
|
{
|
|
Graphics g2 = g.create();
|
|
g2.setFont(this.getFont());
|
|
g2.setColor(this.getForeground());
|
|
return g2;
|
|
}
|
|
|
|
|
|
/**
|
|
* Get the value of the {@link #debugGraphicsOptions} property.
|
|
*
|
|
* @return The current value of the property.
|
|
*
|
|
* @see #setDebugGraphicsOptions
|
|
* @see #debugGraphicsOptions
|
|
*/
|
|
public int getDebugGraphicsOptions()
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Get the component's insets, which are calculated from
|
|
* the {@link #border} property. If the border is <code>null</code>,
|
|
* calls {@link Container#getInsets}.
|
|
*
|
|
* @return The component's current insets
|
|
*/
|
|
public Insets getInsets()
|
|
{
|
|
if (border == null)
|
|
return super.getInsets();
|
|
return getBorder().getBorderInsets(this);
|
|
}
|
|
|
|
/**
|
|
* Get the component's insets, which are calculated from the {@link
|
|
* #border} property. If the border is <code>null</code>, calls {@link
|
|
* Container#getInsets}. The passed-in {@link Insets} value will be
|
|
* used as the return value, if possible.
|
|
*
|
|
* @param insets Return value object to reuse, if possible
|
|
*
|
|
* @return The component's current insets
|
|
*/
|
|
public Insets getInsets(Insets insets)
|
|
{
|
|
Insets t = getInsets();
|
|
|
|
if (insets == null)
|
|
return t;
|
|
|
|
insets.left = t.left;
|
|
insets.right = t.right;
|
|
insets.top = t.top;
|
|
insets.bottom = t.bottom;
|
|
return insets;
|
|
}
|
|
|
|
/**
|
|
* Get the component's location. The passed-in {@link Point} value
|
|
* will be used as the return value, if possible.
|
|
*
|
|
* @param rv Return value object to reuse, if possible
|
|
*
|
|
* @return The component's current location
|
|
*/
|
|
public Point getLocation(Point rv)
|
|
{
|
|
if (rv == null)
|
|
return new Point(getX(), getY());
|
|
|
|
rv.setLocation(getX(), getY());
|
|
return rv;
|
|
}
|
|
|
|
/**
|
|
* Get the component's maximum size. If the {@link #maximumSize} property
|
|
* has been explicitly set, it is returned. If the {@link #maximumSize}
|
|
* property has not been set but the {@link ui} property has been, the
|
|
* result of {@link ComponentUI#getMaximumSize} is returned. If neither
|
|
* property has been set, the result of {@link Container#getMaximumSize}
|
|
* is returned.
|
|
*
|
|
* @return The maximum size of the component
|
|
*
|
|
* @see #maximumSize
|
|
* @see #setMaximumSize
|
|
*/
|
|
public Dimension getMaximumSize()
|
|
{
|
|
if (maximumSize != null)
|
|
return maximumSize;
|
|
|
|
if (ui != null)
|
|
{
|
|
Dimension s = ui.getMaximumSize(this);
|
|
if (s != null)
|
|
return s;
|
|
}
|
|
|
|
Dimension p = super.getMaximumSize();
|
|
return p;
|
|
}
|
|
|
|
/**
|
|
* Get the component's minimum size. If the {@link #minimumSize} property
|
|
* has been explicitly set, it is returned. If the {@link #minimumSize}
|
|
* property has not been set but the {@link ui} property has been, the
|
|
* result of {@link ComponentUI#getMinimumSize} is returned. If neither
|
|
* property has been set, the result of {@link Container#getMinimumSize}
|
|
* is returned.
|
|
*
|
|
* @return The minimum size of the component
|
|
*
|
|
* @see #minimumSize
|
|
* @see #setMinimumSize
|
|
*/
|
|
public Dimension getMinimumSize()
|
|
{
|
|
if (minimumSize != null)
|
|
return minimumSize;
|
|
|
|
if (ui != null)
|
|
{
|
|
Dimension s = ui.getMinimumSize(this);
|
|
if (s != null)
|
|
return s;
|
|
}
|
|
|
|
Dimension p = super.getMinimumSize();
|
|
return p;
|
|
}
|
|
|
|
/**
|
|
* Get the component's preferred size. If the {@link #preferredSize}
|
|
* property has been explicitly set, it is returned. If the {@link
|
|
* #preferredSize} property has not been set but the {@link ui} property
|
|
* has been, the result of {@link ComponentUI#getPreferredSize} is
|
|
* returned. If neither property has been set, the result of {@link
|
|
* Container#getPreferredSize} is returned.
|
|
*
|
|
* @return The preferred size of the component
|
|
*
|
|
* @see #preferredSize
|
|
* @see #setPreferredSize
|
|
*/
|
|
public Dimension getPreferredSize()
|
|
{
|
|
if (preferredSize != null)
|
|
return preferredSize;
|
|
|
|
if (ui != null)
|
|
{
|
|
Dimension s = ui.getPreferredSize(this);
|
|
if (s != null)
|
|
return s;
|
|
}
|
|
Dimension p = super.getPreferredSize();
|
|
return p;
|
|
}
|
|
|
|
/**
|
|
* Checks if a maximum size was explicitely set on the component.
|
|
*
|
|
* @return <code>true</code> if a maximum size was set,
|
|
* <code>false</code> otherwise
|
|
*
|
|
* @since 1.3
|
|
*/
|
|
public boolean isMaximumSizeSet()
|
|
{
|
|
return maximumSize != null;
|
|
}
|
|
|
|
/**
|
|
* Checks if a minimum size was explicitely set on the component.
|
|
*
|
|
* @return <code>true</code> if a minimum size was set,
|
|
* <code>false</code> otherwise
|
|
*
|
|
* @since 1.3
|
|
*/
|
|
public boolean isMinimumSizeSet()
|
|
{
|
|
return minimumSize != null;
|
|
}
|
|
|
|
/**
|
|
* Checks if a preferred size was explicitely set on the component.
|
|
*
|
|
* @return <code>true</code> if a preferred size was set,
|
|
* <code>false</code> otherwise
|
|
*
|
|
* @since 1.3
|
|
*/
|
|
public boolean isPreferredSizeSet()
|
|
{
|
|
return preferredSize != null;
|
|
}
|
|
|
|
/**
|
|
* Return the value of the {@link #nextFocusableComponent} property.
|
|
*
|
|
* @return The current value of the property, or <code>null</code>
|
|
* if none has been set.
|
|
*
|
|
* @deprecated See {@link java.awt.FocusTraversalPolicy}
|
|
*/
|
|
public Component getNextFocusableComponent()
|
|
{
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Return the set of {@link KeyStroke} objects which are registered
|
|
* to initiate actions on this component.
|
|
*
|
|
* @return An array of the registered keystrokes
|
|
*/
|
|
public KeyStroke[] getRegisteredKeyStrokes()
|
|
{
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Returns the first ancestor of this component which is a {@link JRootPane}.
|
|
* Equivalent to calling <code>SwingUtilities.getRootPane(this);</code>.
|
|
*
|
|
* @return An ancestral JRootPane, or <code>null</code> if none exists.
|
|
*/
|
|
public JRootPane getRootPane()
|
|
{
|
|
JRootPane p = SwingUtilities.getRootPane(this);
|
|
return p;
|
|
}
|
|
|
|
/**
|
|
* Get the component's size. The passed-in {@link Dimension} value
|
|
* will be used as the return value, if possible.
|
|
*
|
|
* @param rv Return value object to reuse, if possible
|
|
*
|
|
* @return The component's current size
|
|
*/
|
|
public Dimension getSize(Dimension rv)
|
|
{
|
|
if (rv == null)
|
|
return new Dimension(getWidth(), getHeight());
|
|
else
|
|
{
|
|
rv.setSize(getWidth(), getHeight());
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return the {@link #toolTip} property of this component, creating it and
|
|
* setting it if it is currently <code>null</code>. This method can be
|
|
* overridden in subclasses which wish to control the exact form of
|
|
* tooltip created.
|
|
*
|
|
* @return The current toolTip
|
|
*/
|
|
public JToolTip createToolTip()
|
|
{
|
|
JToolTip toolTip = new JToolTip();
|
|
toolTip.setComponent(this);
|
|
toolTip.setTipText(toolTipText);
|
|
|
|
return toolTip;
|
|
}
|
|
|
|
/**
|
|
* Return the location at which the {@link #toolTip} property should be
|
|
* displayed, when triggered by a particular mouse event.
|
|
*
|
|
* @param event The event the tooltip is being presented in response to
|
|
*
|
|
* @return The point at which to display a tooltip, or <code>null</code>
|
|
* if swing is to choose a default location.
|
|
*/
|
|
public Point getToolTipLocation(MouseEvent event)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Set the value of the {@link #toolTipText} property.
|
|
*
|
|
* @param text The new property value
|
|
*
|
|
* @see #getToolTipText
|
|
*/
|
|
public void setToolTipText(String text)
|
|
{
|
|
if (text == null)
|
|
{
|
|
ToolTipManager.sharedInstance().unregisterComponent(this);
|
|
toolTipText = null;
|
|
return;
|
|
}
|
|
|
|
// XXX: The tip text doesn't get updated unless you set it to null
|
|
// and then to something not-null. This is consistent with the behaviour
|
|
// of Sun's ToolTipManager.
|
|
|
|
String oldText = toolTipText;
|
|
toolTipText = text;
|
|
|
|
if (oldText == null)
|
|
ToolTipManager.sharedInstance().registerComponent(this);
|
|
}
|
|
|
|
/**
|
|
* Get the value of the {@link #toolTipText} property.
|
|
*
|
|
* @return The current property value
|
|
*
|
|
* @see #setToolTipText
|
|
*/
|
|
public String getToolTipText()
|
|
{
|
|
return toolTipText;
|
|
}
|
|
|
|
/**
|
|
* Get the value of the {@link #toolTipText} property, in response to a
|
|
* particular mouse event.
|
|
*
|
|
* @param event The mouse event which triggered the tooltip
|
|
*
|
|
* @return The current property value
|
|
*
|
|
* @see #setToolTipText
|
|
*/
|
|
public String getToolTipText(MouseEvent event)
|
|
{
|
|
return getToolTipText();
|
|
}
|
|
|
|
/**
|
|
* Return the top level ancestral container (usually a {@link
|
|
* java.awt.Window} or {@link java.awt.Applet}) which this component is
|
|
* contained within, or <code>null</code> if no ancestors exist.
|
|
*
|
|
* @return The top level container, if it exists
|
|
*/
|
|
public Container getTopLevelAncestor()
|
|
{
|
|
Container c = getParent();
|
|
for (Container peek = c; peek != null; peek = peek.getParent())
|
|
c = peek;
|
|
return c;
|
|
}
|
|
|
|
/**
|
|
* Compute the component's visible rectangle, which is defined
|
|
* recursively as either the component's bounds, if it has no parent, or
|
|
* the intersection of the component's bounds with the visible rectangle
|
|
* of its parent.
|
|
*
|
|
* @param rect The return value slot to place the visible rectangle in
|
|
*/
|
|
public void computeVisibleRect(Rectangle rect)
|
|
{
|
|
Component c = getParent();
|
|
if (c != null && c instanceof JComponent)
|
|
{
|
|
((JComponent) c).computeVisibleRect(rect);
|
|
rect.translate(-getX(), -getY());
|
|
Rectangle2D.intersect(rect,
|
|
new Rectangle(0, 0, getWidth(), getHeight()),
|
|
rect);
|
|
}
|
|
else
|
|
rect.setRect(0, 0, getWidth(), getHeight());
|
|
}
|
|
|
|
/**
|
|
* Return the component's visible rectangle in a new {@link Rectangle},
|
|
* rather than via a return slot.
|
|
*
|
|
* @return The component's visible rectangle
|
|
*
|
|
* @see #computeVisibleRect(Rectangle)
|
|
*/
|
|
public Rectangle getVisibleRect()
|
|
{
|
|
Rectangle r = new Rectangle();
|
|
computeVisibleRect(r);
|
|
return r;
|
|
}
|
|
|
|
/**
|
|
* <p>Requests that this component receive input focus, giving window
|
|
* focus to the top level ancestor of this component. Only works on
|
|
* displayable, focusable, visible components.</p>
|
|
*
|
|
* <p>This method should not be called by clients; it is intended for
|
|
* focus implementations. Use {@link Component#requestFocus} instead.</p>
|
|
*
|
|
* @see {@link Component#requestFocus}
|
|
*/
|
|
public void grabFocus()
|
|
{
|
|
}
|
|
|
|
/**
|
|
* Get the value of the {@link #doubleBuffered} property.
|
|
*
|
|
* @return The property's current value
|
|
*/
|
|
public boolean isDoubleBuffered()
|
|
{
|
|
return doubleBuffered;
|
|
}
|
|
|
|
/**
|
|
* Return <code>true</code> if the provided component has no native peer;
|
|
* in other words, if it is a "lightweight component".
|
|
*
|
|
* @param c The component to test for lightweight-ness
|
|
*
|
|
* @return Whether or not the component is lightweight
|
|
*/
|
|
public static boolean isLightweightComponent(Component c)
|
|
{
|
|
return c.getPeer() instanceof LightweightPeer;
|
|
}
|
|
|
|
/**
|
|
* Return <code>true<code> if you wish this component to manage its own
|
|
* focus. In particular: if you want this component to be sent
|
|
* <code>TAB</code> and <code>SHIFT+TAB</code> key events, and to not
|
|
* have its children considered as focus transfer targets. If
|
|
* <code>true</code>, focus traversal around this component changes to
|
|
* <code>CTRL+TAB</code> and <code>CTRL+SHIFT+TAB</code>.
|
|
*
|
|
* @return <code>true</code> if you want this component to manage its own
|
|
* focus, otherwise (by default) <code>false</code>
|
|
*
|
|
* @deprecated 1.4 Use {@link Component.setFocusTraversalKeys(int,Set)} and
|
|
* {@link Container.setFocusCycleRoot(boolean)} instead
|
|
*/
|
|
public boolean isManagingFocus()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Return the current value of the {@link opaque} property.
|
|
*
|
|
* @return The current property value
|
|
*/
|
|
public boolean isOpaque()
|
|
{
|
|
return opaque;
|
|
}
|
|
|
|
/**
|
|
* Return <code>true</code> if the component can guarantee that none of its
|
|
* children will overlap in Z-order. This is a hint to the painting system.
|
|
* The default is to return <code>true</code>, but some components such as
|
|
* {@link JLayeredPane} should override this to return <code>false</code>.
|
|
*
|
|
* @return Whether the component tiles its children
|
|
*/
|
|
public boolean isOptimizedDrawingEnabled()
|
|
{
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Return <code>true</code> if this component is currently painting a tile.
|
|
*
|
|
* @return Whether the component is painting a tile
|
|
*/
|
|
public boolean isPaintingTile()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Get the value of the {@link #requestFocusEnabled} property.
|
|
*
|
|
* @return The current value of the property
|
|
*/
|
|
public boolean isRequestFocusEnabled()
|
|
{
|
|
return requestFocusEnabled;
|
|
}
|
|
|
|
/**
|
|
* Return <code>true</code> if this component is a validation root; this
|
|
* will cause calls to {@link #invalidate} in this component's children
|
|
* to be "captured" at this component, and not propagate to its parents.
|
|
* For most components this should return <code>false</code>, but some
|
|
* components such as {@link JViewPort} will want to return
|
|
* <code>true</code>.
|
|
*
|
|
* @return Whether this component is a validation root
|
|
*/
|
|
public boolean isValidateRoot()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* <p>Paint the component. This is a delicate process, and should only be
|
|
* called from the repaint thread, under control of the {@link
|
|
* RepaintManager}. Client code should usually call {@link #repaint} to
|
|
* trigger painting.</p>
|
|
*
|
|
* <p>This method will acquire a double buffer from the {@link
|
|
* RepaintManager} if the component's {@link #doubleBuffered} property is
|
|
* <code>true</code> and the <code>paint</code> call is the
|
|
* <em>first</em> recursive <code>paint</code> call inside swing.</p>
|
|
*
|
|
* <p>The method will also modify the provided {@link Graphics} context
|
|
* via the {@link #getComponentGraphics} method. If you want to customize
|
|
* the graphics object used for painting, you should override that method
|
|
* rather than <code>paint</code>.</p>
|
|
*
|
|
* <p>The body of the <code>paint</code> call involves calling {@link
|
|
* #paintComponent}, {@link #paintBorder}, and {@link #paintChildren} in
|
|
* order. If you want to customize painting behavior, you should override
|
|
* one of these methods rather than <code>paint</code>.</p>
|
|
*
|
|
* <p>For more details on the painting sequence, see <a
|
|
* href="http://java.sun.com/products/jfc/tsc/articles/painting/index.html">this
|
|
* article</a>.</p>
|
|
*
|
|
* @param g The graphics context to paint with
|
|
*
|
|
* @see #paintImmediately
|
|
*/
|
|
public void paint(Graphics g)
|
|
{
|
|
Graphics g2 = g;
|
|
Image doubleBuffer = null;
|
|
RepaintManager rm = RepaintManager.currentManager(this);
|
|
|
|
if (isDoubleBuffered()
|
|
&& (rm.isDoubleBufferingEnabled())
|
|
&& (! Thread.holdsLock(paintLock)))
|
|
{
|
|
doubleBuffer = rm.getOffscreenBuffer(this, getWidth(), getHeight());
|
|
}
|
|
|
|
synchronized (paintLock)
|
|
{
|
|
if (doubleBuffer != null)
|
|
{
|
|
g2 = doubleBuffer.getGraphics();
|
|
g2.setClip(g.getClipBounds());
|
|
}
|
|
|
|
g2 = getComponentGraphics(g2);
|
|
paintComponent(g2);
|
|
paintBorder(g2);
|
|
paintChildren(g2);
|
|
|
|
if (doubleBuffer != null)
|
|
g.drawImage(doubleBuffer, 0, 0, (ImageObserver) null);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Paint the component's border. This usually means calling {@link
|
|
* Border#paintBorder} on the {@link #border} property, if it is
|
|
* non-<code>null</code>. You may override this if you wish to customize
|
|
* border painting behavior. The border is painted after the component's
|
|
* body, but before the component's children.
|
|
*
|
|
* @param g The graphics context with which to paint the border
|
|
*
|
|
* @see #paint
|
|
* @see #paintChildren
|
|
* @see #paintComponent
|
|
*/
|
|
protected void paintBorder(Graphics g)
|
|
{
|
|
if (getBorder() != null)
|
|
getBorder().paintBorder(this, g, 0, 0, getWidth(), getHeight());
|
|
}
|
|
|
|
/**
|
|
* Paint the component's children. This usually means calling {@link
|
|
* Container#paint}, which recursively calls {@link #paint} on any of the
|
|
* component's children, with appropriate changes to coordinate space and
|
|
* clipping region. You may override this if you wish to customize
|
|
* children painting behavior. The children are painted after the
|
|
* component's body and border.
|
|
*
|
|
* @param g The graphics context with which to paint the children
|
|
*
|
|
* @see #paint
|
|
* @see #paintBorder
|
|
* @see #paintComponent
|
|
*/
|
|
protected void paintChildren(Graphics g)
|
|
{
|
|
super.paint(g);
|
|
}
|
|
|
|
/**
|
|
* Paint the component's body. This usually means calling {@link
|
|
* ComponentUI#update} on the {@link #ui} property of the component, if
|
|
* it is non-<code>null</code>. You may override this if you wish to
|
|
* customize the component's body-painting behavior. The component's body
|
|
* is painted first, before the border and children.
|
|
*
|
|
* @param g The graphics context with which to paint the body
|
|
*
|
|
* @see #paint
|
|
* @see #paintBorder
|
|
* @see #paintChildren
|
|
*/
|
|
protected void paintComponent(Graphics g)
|
|
{
|
|
if (ui != null)
|
|
ui.update(g, this);
|
|
}
|
|
|
|
/**
|
|
* A variant of {@link #paintImmediately(Rectangle)} which takes
|
|
* integer parameters.
|
|
*
|
|
* @param x The left x coordinate of the dirty region
|
|
* @param y The top y coordinate of the dirty region
|
|
* @param w The width of the dirty region
|
|
* @param h The height of the dirty region
|
|
*/
|
|
public void paintImmediately(int x, int y, int w, int h)
|
|
{
|
|
paintImmediately(new Rectangle(x, y, w, h));
|
|
}
|
|
|
|
/**
|
|
* Transform the provided dirty rectangle for this component into the
|
|
* appropriate ancestral {@link JRootPane} and call {@link #paint} on
|
|
* that root pane. This method is called from the {@link RepaintManager}
|
|
* and should always be called within the painting thread.
|
|
*
|
|
* @param r The dirty rectangle to paint
|
|
*/
|
|
public void paintImmediately(Rectangle r)
|
|
{
|
|
Component root = SwingUtilities.getRoot(this);
|
|
if (root == null || ! root.isShowing())
|
|
return;
|
|
Graphics g = root.getGraphics();
|
|
if (g == null)
|
|
return;
|
|
|
|
Rectangle clip = SwingUtilities.convertRectangle(this, r, root);
|
|
g.setClip(clip);
|
|
root.paint(g);
|
|
g.dispose();
|
|
}
|
|
|
|
/**
|
|
* Return a string representation for this component, for use in
|
|
* debugging.
|
|
*
|
|
* @return A string describing this component.
|
|
*/
|
|
protected String paramString()
|
|
{
|
|
return "JComponent";
|
|
}
|
|
|
|
/**
|
|
* A variant of {@link
|
|
* #registerKeyboardAction(ActionListener,String,KeyStroke,int)} which
|
|
* provides <code>null</code> for the command name.
|
|
*/
|
|
public void registerKeyboardAction(ActionListener act,
|
|
KeyStroke stroke,
|
|
int cond)
|
|
{
|
|
registerKeyboardAction(act, null, stroke, cond);
|
|
}
|
|
|
|
/*
|
|
* There is some charmingly undocumented behavior sun seems to be using
|
|
* to simulate the old register/unregister keyboard binding API. It's not
|
|
* clear to me why this matters, but we shall endeavour to follow suit.
|
|
*
|
|
* Two main thing seem to be happening when you do registerKeyboardAction():
|
|
*
|
|
* - no actionMap() entry gets created, just an entry in inputMap()
|
|
*
|
|
* - the inputMap() entry is a proxy class which invokes the the
|
|
* binding's actionListener as a target, and which clobbers the command
|
|
* name sent in the ActionEvent, providing the binding command name
|
|
* instead.
|
|
*
|
|
* This much you can work out just by asking the input and action maps
|
|
* what they contain after making bindings, and watching the event which
|
|
* gets delivered to the recipient. Beyond that, it seems to be a
|
|
* sun-private solution so I will only immitate it as much as it matters
|
|
* to external observers.
|
|
*/
|
|
|
|
private static class ActionListenerProxy
|
|
extends AbstractAction
|
|
{
|
|
ActionListener target;
|
|
String bindingCommandName;
|
|
|
|
public ActionListenerProxy(ActionListener li,
|
|
String cmd)
|
|
{
|
|
target = li;
|
|
bindingCommandName = cmd;
|
|
}
|
|
|
|
public void actionPerformed(ActionEvent e)
|
|
{
|
|
ActionEvent derivedEvent = new ActionEvent(e.getSource(),
|
|
e.getID(),
|
|
bindingCommandName,
|
|
e.getModifiers());
|
|
target.actionPerformed(derivedEvent);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* An obsolete method to register a keyboard action on this component.
|
|
* You should use <code>getInputMap</code> and <code>getActionMap</code>
|
|
* to fetch mapping tables from keystrokes to commands, and commands to
|
|
* actions, respectively, and modify those mappings directly.
|
|
*
|
|
* @param anAction The action to be registered
|
|
* @param aCommand The command to deliver in the delivered {@link
|
|
* java.awt.ActionEvent}
|
|
* @param aKeyStroke The keystroke to register on
|
|
* @param aCondition One of the values {@link #UNDEFINED_CONDITION},
|
|
* {@link #WHEN_ANCESTOR_OF_FOCUSED_COMPONENT}, {@link #WHEN_FOCUSED}, or
|
|
* {@link #WHEN_IN_FOCUSED_WINDOW}, indicating the condition which must
|
|
* be met for the action to be fired
|
|
*
|
|
* @see #unregisterKeyboardAction
|
|
* @see #getConditionForKeystroke
|
|
* @see #resetKeyboardActiond
|
|
*/
|
|
public void registerKeyboardAction(ActionListener act,
|
|
String cmd,
|
|
KeyStroke stroke,
|
|
int cond)
|
|
{
|
|
getInputMap(cond).put(stroke, new ActionListenerProxy(act, cmd));
|
|
}
|
|
|
|
|
|
|
|
public final void setInputMap(int condition, InputMap map)
|
|
{
|
|
enableEvents(AWTEvent.KEY_EVENT_MASK);
|
|
switch (condition)
|
|
{
|
|
case WHEN_FOCUSED:
|
|
inputMap_whenFocused = map;
|
|
break;
|
|
|
|
case WHEN_ANCESTOR_OF_FOCUSED_COMPONENT:
|
|
inputMap_whenAncestorOfFocused = map;
|
|
break;
|
|
|
|
case WHEN_IN_FOCUSED_WINDOW:
|
|
inputMap_whenInFocusedWindow = map;
|
|
break;
|
|
|
|
case UNDEFINED_CONDITION:
|
|
default:
|
|
throw new IllegalArgumentException();
|
|
}
|
|
}
|
|
|
|
public final InputMap getInputMap(int condition)
|
|
{
|
|
enableEvents(AWTEvent.KEY_EVENT_MASK);
|
|
switch (condition)
|
|
{
|
|
case WHEN_FOCUSED:
|
|
if (inputMap_whenFocused == null)
|
|
inputMap_whenFocused = new InputMap();
|
|
return inputMap_whenFocused;
|
|
|
|
case WHEN_ANCESTOR_OF_FOCUSED_COMPONENT:
|
|
if (inputMap_whenAncestorOfFocused == null)
|
|
inputMap_whenAncestorOfFocused = new InputMap();
|
|
return inputMap_whenAncestorOfFocused;
|
|
|
|
case WHEN_IN_FOCUSED_WINDOW:
|
|
if (inputMap_whenInFocusedWindow == null)
|
|
inputMap_whenInFocusedWindow = new InputMap();
|
|
return inputMap_whenInFocusedWindow;
|
|
|
|
case UNDEFINED_CONDITION:
|
|
default:
|
|
return null;
|
|
}
|
|
}
|
|
|
|
public final InputMap getInputMap()
|
|
{
|
|
return getInputMap(WHEN_FOCUSED);
|
|
}
|
|
|
|
public final ActionMap getActionMap()
|
|
{
|
|
if (actionMap == null)
|
|
actionMap = new ActionMap();
|
|
return actionMap;
|
|
}
|
|
|
|
public final void setActionMap(ActionMap map)
|
|
{
|
|
actionMap = map;
|
|
}
|
|
|
|
/**
|
|
* Return the condition that determines whether a registered action
|
|
* occurs in response to the specified keystroke.
|
|
*
|
|
* @param aKeyStroke The keystroke to return the condition of
|
|
*
|
|
* @return One of the values {@link #UNDEFINED_CONDITION}, {@link
|
|
* #WHEN_ANCESTOR_OF_FOCUSED_COMPONENT}, {@link #WHEN_FOCUSED}, or {@link
|
|
* #WHEN_IN_FOCUSED_WINDOW}
|
|
*
|
|
* @deprecated As of 1.3 KeyStrokes can be registered with multiple
|
|
* simultaneous conditions.
|
|
*
|
|
* @see #registerKeyboardAction
|
|
* @see #unregisterKeyboardAction
|
|
* @see #resetKeyboardActiond
|
|
*/
|
|
public int getConditionForKeyStroke(KeyStroke ks)
|
|
{
|
|
if (inputMap_whenFocused != null
|
|
&& inputMap_whenFocused.get(ks) != null)
|
|
return WHEN_FOCUSED;
|
|
else if (inputMap_whenAncestorOfFocused != null
|
|
&& inputMap_whenAncestorOfFocused.get(ks) != null)
|
|
return WHEN_ANCESTOR_OF_FOCUSED_COMPONENT;
|
|
else if (inputMap_whenInFocusedWindow != null
|
|
&& inputMap_whenInFocusedWindow.get(ks) != null)
|
|
return WHEN_IN_FOCUSED_WINDOW;
|
|
else
|
|
return UNDEFINED_CONDITION;
|
|
}
|
|
|
|
/**
|
|
* Get the ActionListener (typically an {@link Action} object) which is
|
|
* associated with a particular keystroke.
|
|
*
|
|
* @param aKeyStroke The keystroke to retrieve the action of
|
|
*
|
|
* @return The action associated with the specified keystroke
|
|
*
|
|
* @deprecated Use {@link #getActionMap()}
|
|
*/
|
|
public ActionListener getActionForKeyStroke(KeyStroke ks)
|
|
{
|
|
Object cmd = getInputMap().get(ks);
|
|
if (cmd != null)
|
|
{
|
|
if (cmd instanceof ActionListenerProxy)
|
|
return (ActionListenerProxy) cmd;
|
|
else if (cmd instanceof String)
|
|
return getActionMap().get(cmd);
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* A hook for subclasses which want to customize event processing.
|
|
*/
|
|
protected void processComponentKeyEvent(KeyEvent e)
|
|
{
|
|
}
|
|
|
|
/**
|
|
* Override the default key dispatch system from Component to hook into
|
|
* the swing {@link InputMap} / {@link ActionMap} system.
|
|
*
|
|
* See <a
|
|
* href="http://java.sun.com/products/jfc/tsc/special_report/kestrel/keybindings.html">this
|
|
* report</a> for more details, it's somewhat complex.
|
|
*/
|
|
protected void processKeyEvent(KeyEvent e)
|
|
{
|
|
processComponentKeyEvent(e);
|
|
|
|
// FIXME: this needs to be elaborated significantly, to do all the
|
|
// focus / ancestor / window searching for the various binding modes.
|
|
if (! e.isConsumed() &&
|
|
processKeyBinding(KeyStroke.getKeyStrokeForEvent(e),
|
|
e, WHEN_FOCUSED, e.getID() == KeyEvent.KEY_PRESSED))
|
|
e.consume();
|
|
}
|
|
|
|
protected boolean processKeyBinding(KeyStroke ks,
|
|
KeyEvent e,
|
|
int condition,
|
|
boolean pressed)
|
|
{
|
|
if (isEnabled())
|
|
{
|
|
Action act = null;
|
|
InputMap map = getInputMap(condition);
|
|
if (map != null)
|
|
{
|
|
Object cmd = map.get(ks);
|
|
if (cmd != null)
|
|
{
|
|
if (cmd instanceof ActionListenerProxy)
|
|
act = (Action) cmd;
|
|
else
|
|
act = (Action) getActionMap().get(cmd);
|
|
}
|
|
}
|
|
if (act != null && act.isEnabled())
|
|
return SwingUtilities.notifyAction(act, ks, e, this, e.getModifiers());
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Remove a keyboard action registry.
|
|
*
|
|
* @param stroke The keystroke to unregister
|
|
*
|
|
* @see #registerKeyboardAction
|
|
* @see #getConditionForKeystroke
|
|
* @see #resetKeyboardActiond
|
|
*/
|
|
public void unregisterKeyboardAction(KeyStroke aKeyStroke)
|
|
{
|
|
}
|
|
|
|
|
|
/**
|
|
* Reset all keyboard action registries.
|
|
*
|
|
* @see #registerKeyboardAction
|
|
* @see #unregisterKeyboardAction
|
|
* @see #getConditionForKeystroke
|
|
*/
|
|
public void resetKeyboardActions()
|
|
{
|
|
if (inputMap_whenFocused != null)
|
|
inputMap_whenFocused.clear();
|
|
if (inputMap_whenAncestorOfFocused != null)
|
|
inputMap_whenAncestorOfFocused.clear();
|
|
if (inputMap_whenInFocusedWindow != null)
|
|
inputMap_whenInFocusedWindow.clear();
|
|
if (actionMap != null)
|
|
actionMap.clear();
|
|
}
|
|
|
|
|
|
/**
|
|
* Mark the described region of this component as dirty in the current
|
|
* {@link RepaintManager}. This will queue an asynchronous repaint using
|
|
* the system painting thread in the near future.
|
|
*
|
|
* @param tm ignored
|
|
* @param x coordinate of the region to mark as dirty
|
|
* @param y coordinate of the region to mark as dirty
|
|
* @param width dimension of the region to mark as dirty
|
|
* @param height dimension of the region to mark as dirty
|
|
*/
|
|
public void repaint(long tm, int x, int y, int width, int height)
|
|
{
|
|
Rectangle dirty = new Rectangle(x, y, width, height);
|
|
Rectangle vis = getVisibleRect();
|
|
dirty = dirty.intersection(vis);
|
|
RepaintManager.currentManager(this).addDirtyRegion(this, dirty.x, dirty.y,
|
|
dirty.width,
|
|
dirty.height);
|
|
}
|
|
|
|
/**
|
|
* Mark the described region of this component as dirty in the current
|
|
* {@link RepaintManager}. This will queue an asynchronous repaint using
|
|
* the system painting thread in the near future.
|
|
*
|
|
* @param r The rectangle to mark as dirty
|
|
*/
|
|
public void repaint(Rectangle r)
|
|
{
|
|
repaint((long) 0, (int) r.getX(), (int) r.getY(), (int) r.getWidth(),
|
|
(int) r.getHeight());
|
|
}
|
|
|
|
/**
|
|
* Request focus on the default component of this component's {@link
|
|
* FocusTraversalPolicy}.
|
|
*
|
|
* @return The result of {@link #requestFocus}
|
|
*
|
|
* @deprecated Use {@link #requestFocus()} on the default component provided from
|
|
* the {@link FocusTraversalPolicy} instead.
|
|
*/
|
|
public boolean requestDefaultFocus()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Queue a an invalidation and revalidation of this component, using
|
|
* {@link RepaintManager#addInvalidComponent}.
|
|
*/
|
|
public void revalidate()
|
|
{
|
|
invalidate();
|
|
RepaintManager.currentManager(this).addInvalidComponent(this);
|
|
}
|
|
|
|
/**
|
|
* Calls <code>scrollRectToVisible</code> on the component's parent.
|
|
* Components which can service this call should override.
|
|
*
|
|
* @param r The rectangle to make visible
|
|
*/
|
|
public void scrollRectToVisible(Rectangle r)
|
|
{
|
|
Component p = getParent();
|
|
if (p instanceof JComponent)
|
|
((JComponent) p).scrollRectToVisible(r);
|
|
}
|
|
|
|
/**
|
|
* Set the value of the {@link #alignmentX} property.
|
|
*
|
|
* @param a The new value of the property
|
|
*/
|
|
public void setAlignmentX(float a)
|
|
{
|
|
alignmentX = a;
|
|
}
|
|
|
|
/**
|
|
* Set the value of the {@link #alignmentY} property.
|
|
*
|
|
* @param a The new value of the property
|
|
*/
|
|
public void setAlignmentY(float a)
|
|
{
|
|
alignmentY = a;
|
|
}
|
|
|
|
/**
|
|
* Set the value of the {@link #autoscrolls} property.
|
|
*
|
|
* @param a The new value of the property
|
|
*/
|
|
public void setAutoscrolls(boolean a)
|
|
{
|
|
autoscrolls = a;
|
|
}
|
|
|
|
/**
|
|
* Set the value of the {@link #debugGraphicsOptions} property.
|
|
*
|
|
* @param debugOptions The new value of the property
|
|
*/
|
|
public void setDebugGraphicsOptions(int debugOptions)
|
|
{
|
|
debugGraphicsOptions = debugOptions;
|
|
}
|
|
|
|
/**
|
|
* Set the value of the {@link #doubleBuffered} property.
|
|
*
|
|
* @param db The new value of the property
|
|
*/
|
|
public void setDoubleBuffered(boolean db)
|
|
{
|
|
doubleBuffered = db;
|
|
}
|
|
|
|
/**
|
|
* Set the value of the {@link #enabled} property, revalidate
|
|
* and repaint this component.
|
|
*
|
|
* @param enable The new value of the property
|
|
*/
|
|
public void setEnabled(boolean enable)
|
|
{
|
|
boolean oldEnabled = isEnabled();
|
|
super.setEnabled(enable);
|
|
firePropertyChange("enabeld", oldEnabled, enable);
|
|
revalidate();
|
|
repaint();
|
|
}
|
|
|
|
/**
|
|
* Set the value of the {@link #font} property, revalidate
|
|
* and repaint this component.
|
|
*
|
|
* @param f The new value of the property
|
|
*/
|
|
public void setFont(Font f)
|
|
{
|
|
super.setFont(f);
|
|
revalidate();
|
|
repaint();
|
|
}
|
|
|
|
/**
|
|
* Set the value of the {@link #background} property, revalidate
|
|
* and repaint this component.
|
|
*
|
|
* @param bg The new value of the property
|
|
*/
|
|
public void setBackground(Color bg)
|
|
{
|
|
super.setBackground(bg);
|
|
revalidate();
|
|
repaint();
|
|
}
|
|
|
|
/**
|
|
* Set the value of the {@link #foreground} property, revalidate
|
|
* and repaint this component.
|
|
*
|
|
* @param fg The new value of the property
|
|
*/
|
|
public void setForeground(Color fg)
|
|
{
|
|
super.setForeground(fg);
|
|
revalidate();
|
|
repaint();
|
|
}
|
|
|
|
/**
|
|
* Set the value of the {@link #maximumSize} property, revalidate
|
|
* and repaint this component.
|
|
*
|
|
* @param max The new value of the property
|
|
*/
|
|
public void setMaximumSize(Dimension max)
|
|
{
|
|
Dimension oldMaximumSize = maximumSize;
|
|
maximumSize = max;
|
|
firePropertyChange("maximumSize", oldMaximumSize, maximumSize);
|
|
revalidate();
|
|
repaint();
|
|
}
|
|
|
|
/**
|
|
* Set the value of the {@link #minimumSize} property, revalidate
|
|
* and repaint this component.
|
|
*
|
|
* @param min The new value of the property
|
|
*/
|
|
public void setMinimumSize(Dimension min)
|
|
{
|
|
Dimension oldMinimumSize = minimumSize;
|
|
minimumSize = min;
|
|
firePropertyChange("minimumSize", oldMinimumSize, minimumSize);
|
|
revalidate();
|
|
repaint();
|
|
}
|
|
|
|
/**
|
|
* Set the value of the {@link #preferredSize} property, revalidate
|
|
* and repaint this component.
|
|
*
|
|
* @param pref The new value of the property
|
|
*/
|
|
public void setPreferredSize(Dimension pref)
|
|
{
|
|
Dimension oldPreferredSize = preferredSize;
|
|
preferredSize = pref;
|
|
firePropertyChange("preferredSize", oldPreferredSize, preferredSize);
|
|
}
|
|
|
|
/**
|
|
* Set the specified component to be the next component in the
|
|
* focus cycle, overriding the {@link FocusTraversalPolicy} for
|
|
* this component.
|
|
*
|
|
* @param aComponent The component to set as the next focusable
|
|
*
|
|
* @deprecated Use FocusTraversalPolicy instead
|
|
*/
|
|
public void setNextFocusableComponent(Component aComponent)
|
|
{
|
|
}
|
|
|
|
/**
|
|
* Set the value of the {@link #requestFocusEnabled} property.
|
|
*
|
|
* @param e The new value of the property
|
|
*/
|
|
public void setRequestFocusEnabled(boolean e)
|
|
{
|
|
requestFocusEnabled = e;
|
|
}
|
|
|
|
/**
|
|
* Get the value of the {@link #transferHandler} property.
|
|
*
|
|
* @return The current value of the property
|
|
*
|
|
* @see ComponentUI#setTransferHandler
|
|
*/
|
|
|
|
public TransferHandler getTransferHandler()
|
|
{
|
|
return transferHandler;
|
|
}
|
|
|
|
/**
|
|
* Set the value of the {@link #transferHandler} property.
|
|
*
|
|
* @param newHandler The new value of the property
|
|
*
|
|
* @see ComponentUI#getTransferHandler
|
|
*/
|
|
|
|
void setTransferHandler (TransferHandler newHandler)
|
|
{
|
|
transferHandler = newHandler;
|
|
}
|
|
|
|
/**
|
|
* Set the value of the {@link #opaque} property, revalidate and repaint
|
|
* this component.
|
|
*
|
|
* @param isOpaque The new value of the property
|
|
*
|
|
* @see ComponentUI#update
|
|
*/
|
|
public void setOpaque(boolean isOpaque)
|
|
{
|
|
boolean oldOpaque = opaque;
|
|
opaque = isOpaque;
|
|
firePropertyChange("opaque", oldOpaque, opaque);
|
|
revalidate();
|
|
repaint();
|
|
}
|
|
|
|
/**
|
|
* Set the value of the visible property, and revalidate / repaint the
|
|
* component.
|
|
*
|
|
* @param v The new value of the property
|
|
*/
|
|
public void setVisible(boolean v)
|
|
{
|
|
super.setVisible(v);
|
|
revalidate();
|
|
repaint();
|
|
}
|
|
|
|
/**
|
|
* Call {@link paint}.
|
|
*
|
|
* @param g The graphics context to paint into
|
|
*/
|
|
public void update(Graphics g)
|
|
{
|
|
paint(g);
|
|
}
|
|
|
|
/**
|
|
* Get the value of the UIClassID property. This property should be a key
|
|
* in the {@link UIDefaults} table managed by {@link UIManager}, the
|
|
* value of which is the name of a class to load for the component's
|
|
* {@link ui} property.
|
|
*
|
|
* @return A "symbolic" name which will map to a class to use for the
|
|
* component's UI, such as <code>"ComponentUI"</code>
|
|
*
|
|
* @see #setUI
|
|
* @see #updateUI
|
|
*/
|
|
public String getUIClassID()
|
|
{
|
|
return "ComponentUI";
|
|
}
|
|
|
|
/**
|
|
* Install a new UI delegate as the component's {@link ui} property. In
|
|
* the process, this will call {@link ComponentUI.uninstallUI} on any
|
|
* existing value for the {@link ui} property, and {@link
|
|
* ComponentUI.installUI} on the new UI delegate.
|
|
*
|
|
* @param newUI The new UI delegate to install
|
|
*
|
|
* @see #updateUI
|
|
* @see #getUIClassID
|
|
*/
|
|
protected void setUI(ComponentUI newUI)
|
|
{
|
|
if (ui != null)
|
|
ui.uninstallUI(this);
|
|
|
|
ComponentUI oldUI = ui;
|
|
ui = newUI;
|
|
|
|
if (ui != null)
|
|
ui.installUI(this);
|
|
|
|
firePropertyChange("UI", oldUI, newUI);
|
|
|
|
revalidate();
|
|
repaint();
|
|
}
|
|
|
|
/**
|
|
* This method should be overridden in subclasses. In JComponent, the
|
|
* method does nothing. In subclasses, it should a UI delegate
|
|
* (corresponding to the symbolic name returned from {@link
|
|
* getUIClassID}) from the {@link UIManager}, and calls {@link setUI}
|
|
* with the new delegate.
|
|
*/
|
|
public void updateUI()
|
|
{
|
|
System.out.println("update UI not overwritten in class: " + this);
|
|
}
|
|
|
|
public static Locale getDefaultLocale()
|
|
{
|
|
return defaultLocale;
|
|
}
|
|
|
|
public static void setDefaultLocale(Locale l)
|
|
{
|
|
defaultLocale = l;
|
|
}
|
|
|
|
/**
|
|
* Returns the currently set input verifier for this component.
|
|
*
|
|
* @return the input verifier, or <code>null</code> if none
|
|
*/
|
|
public InputVerifier getInputVerifier()
|
|
{
|
|
return inputVerifier;
|
|
}
|
|
|
|
/**
|
|
* Sets the input verifier to use by this component.
|
|
*
|
|
* @param verifier the input verifier, or <code>null</code>
|
|
*/
|
|
public void setInputVerifier(InputVerifier verifier)
|
|
{
|
|
InputVerifier oldVerifier = inputVerifier;
|
|
inputVerifier = verifier;
|
|
firePropertyChange("inputVerifier", oldVerifier, verifier);
|
|
}
|
|
}
|