001: /*
002: The contents of this file are subject to the Common Public Attribution License
003: Version 1.0 (the "License"); you may not use this file except in compliance with
004: the License. You may obtain a copy of the License at
005: http://www.projity.com/license . The License is based on the Mozilla Public
006: License Version 1.1 but Sections 14 and 15 have been added to cover use of
007: software over a computer network and provide for limited attribution for the
008: Original Developer. In addition, Exhibit A has been modified to be consistent
009: with Exhibit B.
010:
011: Software distributed under the License is distributed on an "AS IS" basis,
012: WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the
013: specific language governing rights and limitations under the License. The
014: Original Code is OpenProj. The Original Developer is the Initial Developer and
015: is Projity, Inc. All portions of the code written by Projity are Copyright (c)
016: 2006, 2007. All Rights Reserved. Contributors Projity, Inc.
017:
018: Alternatively, the contents of this file may be used under the terms of the
019: Projity End-User License Agreeement (the Projity License), in which case the
020: provisions of the Projity License are applicable instead of those above. If you
021: wish to allow use of your version of this file only under the terms of the
022: Projity License and not to allow others to use your version of this file under
023: the CPAL, indicate your decision by deleting the provisions above and replace
024: them with the notice and other provisions required by the Projity License. If
025: you do not delete the provisions above, a recipient may use your version of this
026: file under either the CPAL or the Projity License.
027:
028: [NOTE: The text of this license may differ slightly from the text of the notices
029: in Exhibits A and B of the license at http://www.projity.com/license. You should
030: use the latest text at http://www.projity.com/license for your modifications.
031: You may not remove this license text from the source files.]
032:
033: Attribution Information: Attribution Copyright Notice: Copyright © 2006, 2007
034: Projity, Inc. Attribution Phrase (not exceeding 10 words): Powered by OpenProj,
035: an open source solution from Projity. Attribution URL: http://www.projity.com
036: Graphic Image as provided in the Covered Code as file: openproj_logo.png with
037: alternatives listed on http://www.projity.com/logo
038:
039: Display of Attribution Information is required in Larger Works which are defined
040: in the CPAL as a work which combines Covered Code or portions thereof with code
041: not governed by the terms of the CPAL. However, in addition to the other notice
042: obligations, all copies of the Covered Code in Executable and Source Code form
043: distributed must, as a form of attribution of the original author, include on
044: each user interface screen the "OpenProj" logo visible to all users. The
045: OpenProj logo should be located horizontally aligned with the menu bar and left
046: justified on the top left of the screen adjacent to the File menu. The logo
047: must be at least 100 x 25 pixels. When users click on the "OpenProj" logo it
048: must direct them back to http://www.projity.com.
049: */
050: package com.projity.pm.graphic.frames;
051:
052: import java.util.EventListener;
053: import java.util.EventObject;
054:
055: /**
056: * Used to notify that the current document selection has changed
057: */
058: public class DocumentSelectedEvent extends EventObject {
059: private static final long serialVersionUID = -1882234298777797617L;
060:
061: private static DocumentFrame cachedPrevious = null;
062:
063: private DocumentFrame current;
064: private DocumentFrame previous;
065:
066: /**
067: * @param arg0
068: */
069: public DocumentSelectedEvent(Object source, DocumentFrame current) {
070: super (source);
071: this .current = current;
072: this .previous = cachedPrevious;
073: cachedPrevious = current;
074: }
075:
076: protected static javax.swing.event.EventListenerList listenerList = new javax.swing.event.EventListenerList();
077:
078: // This methods allows classes to register for ObjectEvents
079: public static void addListener(Listener listener) {
080: listenerList.add(Listener.class, listener);
081: }
082:
083: // This methods allows classes to unregister for ObjectEvents
084: public static void removeListener(Listener listener) {
085: listenerList.remove(Listener.class, listener);
086: }
087:
088: public interface Listener extends EventListener {
089: public void documentSelected(DocumentSelectedEvent evt);
090: }
091:
092: public static void fire(Object source, DocumentFrame current) {
093: // if (current == cachedPrevious)
094: // return;
095: DocumentSelectedEvent evt = new DocumentSelectedEvent(source,
096: current);
097: Object[] listeners = listenerList.getListenerList();
098: // Each listener occupies two elements - the first is the listener class
099: // and the second is the listener instance
100: for (int i = 0; i < listeners.length; i += 2) {
101: if (listeners[i] == Listener.class) {
102: ((Listener) listeners[i + 1]).documentSelected(evt);
103: }
104: }
105: }
106:
107: /**
108: * @return Returns the current.
109: */
110: public DocumentFrame getCurrent() {
111: return current;
112: }
113:
114: /**
115: * @return Returns the previous.
116: */
117: public DocumentFrame getPrevious() {
118: return previous;
119: }
120: }
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