01: //The contents of this file are subject to the Mozilla Public License Version 1.1
02: //(the "License"); you may not use this file except in compliance with the
03: //License. You may obtain a copy of the License at http://www.mozilla.org/MPL/
04: //
05: //Software distributed under the License is distributed on an "AS IS" basis,
06: //WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
07: //for the specific language governing rights and
08: //limitations under the License.
09: //
10: //The Original Code is "The Columba Project"
11: //
12: //The Initial Developers of the Original Code are Frederik Dietz and Timo Stich.
13: //Portions created by Frederik Dietz and Timo Stich are Copyright (C) 2003.
14: //
15: //All Rights Reserved.
16: package org.columba.core.gui.action;
17:
18: import org.columba.api.gui.frame.IFrameMediator;
19:
20: /**
21: * This class subclasses AbstractColumbaAction to encapsulate a selection
22: * state. State changes are propagated to registered PropertyChangeListener
23: * instances.
24: */
25: public abstract class AbstractSelectableAction extends
26: AbstractColumbaAction {
27: protected boolean state = false;
28:
29: /**
30: * Creates a new action instance with a default selection state of false.
31: */
32: public AbstractSelectableAction(IFrameMediator controller,
33: String name) {
34: super (controller, name);
35: }
36:
37: /**
38: * Returns the action's selection state.
39: */
40: public boolean getState() {
41: return state;
42: }
43:
44: /**
45: * Sets the action's selection state and notifies registered listeners.
46: */
47: public void setState(boolean state) {
48: if (this .state != state) {
49: Boolean oldValue = this .state ? Boolean.TRUE
50: : Boolean.FALSE;
51: this .state = state;
52: firePropertyChange("selected", oldValue,
53: state ? Boolean.TRUE : Boolean.FALSE);
54: }
55: }
56: }
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