93 lines
3.0 KiB
Java
93 lines
3.0 KiB
Java
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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package netscape.plugin.composer.mapedit;
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import java.awt.*;
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import java.util.Vector;
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public class IconCheckBoxGroup {
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void stateChanged(IconCheckBox box,boolean state) {
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// Prevent recursion.
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if (changingState) {
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return;
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}
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changingState = true;
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int index = items.indexOf(box);
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Debug.assert(index != -1,"bad index");
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if (index == active) {
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// Active box is trying to turn itself off.
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// I don't think so...
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if (state == false) {
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box.setState(true);
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}
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}
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else if (state == true) {
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// Some other box is turned on, turn off formerly active one.
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try {
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IconCheckBox activeBox = (IconCheckBox)items.elementAt(active);
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activeBox.setState(false);
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active = index;
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} catch (ArrayIndexOutOfBoundsException e) {}
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}
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changingState = false;
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}
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// Called by the IconCheckBox when it is created.
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void add(IconCheckBox box) {
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items.addElement(box);
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if (box.getState()) {
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Debug.assert(active == -1,"more than one active box");
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active = items.size() - 1; // The box just added.
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}
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}
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// Index of the active CheckBox.
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int active = -1;
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Vector items = new Vector(); // of IconCheckBox
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boolean changingState = false;
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}
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