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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/java/awt/event/ContainerEvent.java | |
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Diffstat (limited to 'libjava/classpath/java/awt/event/ContainerEvent.java')
-rw-r--r-- | libjava/classpath/java/awt/event/ContainerEvent.java | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/libjava/classpath/java/awt/event/ContainerEvent.java b/libjava/classpath/java/awt/event/ContainerEvent.java new file mode 100644 index 000000000..3c401fe1a --- /dev/null +++ b/libjava/classpath/java/awt/event/ContainerEvent.java @@ -0,0 +1,135 @@ +/* ContainerEvent.java -- components added/removed from a container + Copyright (C) 1999, 2002, 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.event; + +import java.awt.Component; +import java.awt.Container; + +/** + * This event is generated when a component is added or removed from a + * container. Applications do not ordinarily need to handle these events + * since the AWT system handles them internally. + * + * @author Aaron M. Renn (arenn@urbanophile.com) + * @see ContainerAdapter + * @see ContainerListener + * @since 1.1 + * @status updated to 1.4 + */ +public class ContainerEvent extends ComponentEvent +{ + /** + * Compatible with JDK 1.1+. + */ + private static final long serialVersionUID = -4114942250539772041L; + + /** This is the first id in the id range used by this class. */ + public static final int CONTAINER_FIRST = 300; + + /** This is the last id in the id range used by this class. */ + public static final int CONTAINER_LAST = 301; + + /** This id indicates a component was added to the container. */ + public static final int COMPONENT_ADDED = 300; + + /** This id indicates a component was removed from the container. */ + public static final int COMPONENT_REMOVED = 301; + + /** + * The non-null child component that was added or removed. + * + * @serial the child component that changed + */ + private final Component child; + + /** + * Initializes a new instance of <code>ContainerEvent</code> with the + * specified source and id. Additionally, the affected child component + * is also passed as a parameter. Note that an invalid id leads to + * unspecified results. + * + * @param source the source container of the event + * @param id the event id + * @param child the child component affected by this event + * @throws IllegalArgumentException if source is null + */ + public ContainerEvent(Component source, int id, Component child) + { + super(source, id); + this.child = child; + } + + /** + * Returns the source of this event as a <code>Container</code>. + * + * @return the source of the event + * @throws ClassCastException if the source is changed to a non-Container + */ + public Container getContainer() + { + return (Container) source; + } + + /** + * This method returns the child object that was added or removed from + * the container. + * + * @return the child object added or removed + */ + public Component getChild() + { + return child; + } + + /** + * This method returns a string identifying this event. It is formatted as: + * <code>(getID() == COMPONENT_ADDED ? "COMPONENT_ADDED" + * : "COMPONENT_REMOVED") + ",child=" + getChild().getName()</code>. + * + * @return a string identifying this event + */ + public String paramString() + { + // Unlike Sun, we don't throw NullPointerException if child is illegally + // null. + return (id == COMPONENT_ADDED ? "COMPONENT_ADDED,child=" + : id == COMPONENT_REMOVED ? "COMPONENT_REMOVED,child=" + : "unknown type,child=") + (child == null ? "" : child.getName()); + } +} // class ContainerEvent |