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Java Source | 1997-05-20 | 3.2 KB | 112 lines |
- /*
- * @(#)ContainerEvent.java 1.3 97/01/27 Amy Fowler
- *
- * Copyright (c) 1996 Sun Microsystems, Inc. All Rights Reserved.
- *
- * This software is the confidential and proprietary information of Sun
- * Microsystems, Inc. ("Confidential Information"). You shall not
- * disclose such Confidential Information and shall use it only in
- * accordance with the terms of the license agreement you entered into
- * with Sun.
- *
- * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
- * SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
- * PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES
- * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
- * THIS SOFTWARE OR ITS DERIVATIVES.
- *
- * CopyrightVersion 1.1_beta
- *
- */
-
- package java.awt.event;
-
- import java.awt.AWTEvent;
- import java.awt.Container;
- import java.awt.Component;
-
- /**
- * The class for container-level events.
- * These events are provided for notification purposes ONLY;
- * The AWT will automatically handle container add and remove
- * operations internally.
- *
- * @see ContainerListener
- *
- * @version 1.3 01/27/97
- * @author Tim Prinzing
- * @author Amy Fowler
- */
- public class ContainerEvent extends ComponentEvent {
-
- /**
- * Marks the first integer id for the range of container event ids.
- */
- public static final int CONTAINER_FIRST = 300;
-
- /**
- * Marks the last integer id for the range of container event ids.
- */
- public static final int CONTAINER_LAST = 301;
-
- /**
- * The component moved event type.
- */
- public static final int COMPONENT_ADDED = CONTAINER_FIRST;
-
- /**
- * The component resized event type.
- */
- public static final int COMPONENT_REMOVED = 1 + CONTAINER_FIRST;
-
- Component child;
-
- /*
- * JDK 1.1 serialVersionUID
- */
- private static final long serialVersionUID = -4114942250539772041L;
-
- /**
- * Constructs a ContainerEvent object with the specified source
- * container, type, and child which is being added or removed.
- * @param source the container where the event originated
- * @id the event type
- * @child the child component
- */
- public ContainerEvent(Component source, int id, Component child) {
- super(source, id);
- this.child = child;
- }
-
- /**
- * Returns the container where this event originated.
- */
- public Container getContainer() {
- return (Container)source; // cast should always be OK, type was checked in constructor
- }
-
- /**
- * Returns the child component that was added or removed in
- * this event.
- */
- public Component getChild() {
- return child;
- }
-
- public String paramString() {
- String typeStr;
- switch(id) {
- case COMPONENT_ADDED:
- typeStr = "COMPONENT_ADDED";
- break;
- case COMPONENT_REMOVED:
- typeStr = "COMPONENT_REMOVED";
- break;
- default:
- typeStr = "unknown type";
- }
- return typeStr + ",child="+child.getName();
- }
- }
-