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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/WindowEvent.java | |
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Diffstat (limited to 'libjava/classpath/java/awt/event/WindowEvent.java')
-rw-r--r-- | libjava/classpath/java/awt/event/WindowEvent.java | 314 |
1 files changed, 314 insertions, 0 deletions
diff --git a/libjava/classpath/java/awt/event/WindowEvent.java b/libjava/classpath/java/awt/event/WindowEvent.java new file mode 100644 index 000000000..b52fefcdc --- /dev/null +++ b/libjava/classpath/java/awt/event/WindowEvent.java @@ -0,0 +1,314 @@ +/* WindowEvent.java -- window change event + 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 gnu.java.lang.CPStringBuilder; + +import java.awt.Frame; +import java.awt.Window; + +/** + * This event is generated when there is a change in a window. This includes + * creation, closing, iconification, activation, and focus changes. There + * are three listeners, for three types of events: WindowListeners deal with + * the lifecycle of a window, WindowStateListeners deal with window state + * like maximization, and WindowFocusListeners deal with focus switching to + * or from a window. + * + * @author Aaron M. Renn (arenn@urbanophile.com) + * @see WindowAdapter + * @see WindowListener + * @see WindowFocusListener + * @see WindowStateListener + * @since 1.1 + * @status updated to 1.4 + */ +public class WindowEvent extends ComponentEvent +{ + /** + * Compatible with JDK 1.1+. + */ + private static final long serialVersionUID = -1567959133147912127L; + + /** This is the first id in the range of event ids used by this class. */ + public static final int WINDOW_FIRST = 200; + + /** This is the id for a window that is opened. */ + public static final int WINDOW_OPENED = 200; + + /** This is the id for a window that is about to close. */ + public static final int WINDOW_CLOSING = 201; + + /** This is the id for a window that finished closing. */ + public static final int WINDOW_CLOSED = 202; + + /** This is the id for a window that is iconified. */ + public static final int WINDOW_ICONIFIED = 203; + + /** This is the id for a window that is de-iconified. */ + public static final int WINDOW_DEICONIFIED = 204; + + /** This is the id for a window that is activated. */ + public static final int WINDOW_ACTIVATED = 205; + + /** This is the id for a window that is de-activated. */ + public static final int WINDOW_DEACTIVATED = 206; + + /** + * This is the id for a window becoming the focused window. + * + * @since 1.4 + */ + public static final int WINDOW_GAINED_FOCUS = 207; + + /** + * This is the id for a window losing all focus. + * + * @since 1.4 + */ + public static final int WINDOW_LOST_FOCUS = 208; + + /** + * This is the id for a window state change, such as maximization. + * + * @since 1.4 + */ + public static final int WINDOW_STATE_CHANGED = 209; + + /** This is the last id in the range of event ids used by this class. */ + public static final int WINDOW_LAST = 209; + + /** + * The other Window involved in a focus or activation change. For + * WINDOW_ACTIVATED and WINDOW_GAINED_FOCUS events, this is the window that + * lost focus; for WINDOW_DEACTIVATED and WINDOW_LOST_FOCUS, this is the + * window that stole focus; and for other events (or when native + * implementation does not have the data available), this is null. + * + * @see #getOppositeWindow() + * @serial the opposite window, or null + * @since 1.4 + */ + private final Window opposite; + + /** + * The former state of the window. + * + * @serial bitmask of the old window state + * @since 1.4 + */ + private final int oldState; + + /** + * The present state of the window. + * + * @serial bitmask of the new window state + * @since 1.4 + */ + private final int newState; + + /** + * Initializes a new instance of <code>WindowEvent</code> with the specified + * parameters. Note that an invalid id leads to unspecified results. + * + * @param source the window that generated this event + * @param id the event id + * @param opposite the window that received the opposite event, or null + * @param oldState the previous state of this window + * @param newState the new state of this window + * @throws IllegalArgumentException if source is null + * @since 1.4 + */ + public WindowEvent(Window source, int id, Window opposite, + int oldState, int newState) + { + super(source, id); + this.opposite = opposite; + this.oldState = oldState; + this.newState = newState; + } + + /** + * Initializes a new instance of <code>WindowEvent</code> with the specified + * parameters. Note that an invalid id leads to unspecified results. + * + * @param source the window that generated this event + * @param id the event id + * @param opposite the window that received the opposite event, or null + * @throws IllegalArgumentException if source is null + * @since 1.4 + */ + public WindowEvent(Window source, int id, Window opposite) + { + this(source, id, opposite, 0, 0); + } + + /** + * Initializes a new instance of <code>WindowEvent</code> with the specified + * parameters. Note that an invalid id leads to unspecified results. + * + * @param source the window that generated this event + * @param id the event id + * @param oldState the previous state of this window + * @param newState the new state of this window + * @throws IllegalArgumentException if source is null + * @since 1.4 + */ + public WindowEvent(Window source, int id, int oldState, int newState) + { + this(source, id, null, oldState, newState); + } + + /** + * Initializes a new instance of <code>WindowEvent</code> with the specified + * parameters. Note that an invalid id leads to unspecified results. + * + * @param source the window that generated this event + * @param id the event id + * @throws IllegalArgumentException if source is null + */ + public WindowEvent(Window source, int id) + { + this(source, id, null, 0, 0); + } + + /** + * Returns the event source as a <code>Window</code>. If the source has + * subsequently been modified to a non-Window, this returns null. + * + * @return the event source as a <code>Window</code> + */ + public Window getWindow() + { + return source instanceof Window ? (Window) source : null; + } + + /** + * Returns the opposite window if this window was involved in an activation + * or focus change. For WINDOW_ACTIVATED and WINDOW_GAINED_FOCUS events, + * this is the window that lost focus; for WINDOW_DEACTIVATED and + * WINDOW_LOST_FOCUS, this is the window that stole focus; and for other + * events (or when native implementation does not have the data available), + * this is null. + * + * @return the opposite window, or null + * @since 1.4 + */ + public Window getOppositeWindow() + { + return opposite; + } + + /** + * Returns the state of this window before the event. This is the bitwise + * or of fields in Frame: NORMAL, ICONIFIED, MAXIMIZED_HORIZ, MAXIMIZED_VERT, + * and MAXIMIZED_BOTH. + * + * @return the former state + * @see Frame#getExtendedState() + * @since 1.4 + */ + public int getOldState() + { + return oldState; + } + + /** + * Returns the state of this window after the event. This is the bitwise + * or of fields in Frame: NORMAL, ICONIFIED, MAXIMIZED_HORIZ, MAXIMIZED_VERT, + * and MAXIMIZED_BOTH. + * + * @return the updated state + * @see Frame#getExtendedState() + * @since 1.4 + */ + public int getNewState() + { + return newState; + } + + /** + * Returns a string that identifies this event. This is formatted as the + * field name of the id, followed by the opposite window, old state, and + * new state. + * + * @return a string that identifies this event + */ + public String paramString() + { + CPStringBuilder s = new CPStringBuilder(); + switch (id) + { + case WINDOW_OPENED: + s.append("WINDOW_OPENED,opposite="); + break; + case WINDOW_CLOSING: + s.append("WINDOW_CLOSING,opposite="); + break; + case WINDOW_CLOSED: + s.append("WINDOW_CLOSED,opposite="); + break; + case WINDOW_ICONIFIED: + s.append("WINDOW_ICONIFIED,opposite="); + break; + case WINDOW_DEICONIFIED: + s.append("WINDOW_DEICONIFIED,opposite="); + break; + case WINDOW_ACTIVATED: + s.append("WINDOW_ACTIVATED,opposite="); + break; + case WINDOW_DEACTIVATED: + s.append("WINDOW_DEACTIVATED,opposite="); + break; + case WINDOW_GAINED_FOCUS: + s.append("WINDOW_GAINED_FOCUS,opposite="); + break; + case WINDOW_LOST_FOCUS: + s.append("WINDOW_LOST_FOCUS,opposite="); + break; + case WINDOW_STATE_CHANGED: + s.append("WINDOW_STATE_CHANGED,opposite="); + break; + default: + s.append("unknown type,opposite="); + } + return s.append(opposite).append(",oldState=").append(oldState) + .append(",newState=").append(newState).toString(); + } +} // class WindowEvent |