Source Code Cross Referenced for CCheckBoxMenuItem.java in  » Mail-Clients » columba-1.4 » org » columba » core » gui » action » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Mail Clients » columba 1.4 » org.columba.core.gui.action 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


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 java.awt.event.ItemEvent;
19:        import java.awt.event.ItemListener;
20:        import java.beans.PropertyChangeListener;
21:        import java.lang.reflect.Proxy;
22:
23:        import javax.swing.Action;
24:        import javax.swing.JCheckBoxMenuItem;
25:
26:        import org.columba.core.gui.base.ButtonStateAdapter;
27:        import org.columba.core.gui.base.MnemonicSetter;
28:
29:        /**
30:         * Adds an Observer to JCheckBoxMenuItem in order to make it possible
31:         * to receive selection state changes from its underlying action.
32:         *
33:         * @author fdietz
34:         */
35:
36:        public class CCheckBoxMenuItem extends JCheckBoxMenuItem {
37:            /**
38:             * default constructor
39:             */
40:            public CCheckBoxMenuItem() {
41:                super ();
42:            }
43:
44:            /**
45:             * Creates a checkbox menu item with a given action attached.
46:             * <br>
47:             * If the name of the action contains &, the next character is used as
48:             * mnemonic. If not, the fall-back solution is to use default behaviour,
49:             * i.e. the mnemonic defined using setMnemonic on the action.
50:             *
51:             * @param action        The action to attach to the menu item
52:             */
53:            public CCheckBoxMenuItem(AbstractSelectableAction action) {
54:                super (action);
55:
56:                // Set text, possibly with a mnemonic if defined using &
57:                MnemonicSetter.setTextWithMnemonic(this , (String) action
58:                        .getValue(Action.NAME));
59:                getModel().addItemListener(new ItemListener() {
60:                    public void itemStateChanged(ItemEvent e) {
61:                        AbstractSelectableAction a = (AbstractSelectableAction) getAction();
62:
63:                        if (a != null) {
64:                            a
65:                                    .setState(e.getStateChange() == ItemEvent.SELECTED);
66:                        }
67:                    }
68:                });
69:            }
70:
71:            /**
72:             * Overridden to react to state changes of the underlying action.
73:             */
74:            protected PropertyChangeListener createActionPropertyChangeListener(
75:                    Action a) {
76:                return (PropertyChangeListener) Proxy.newProxyInstance(
77:                        getClass().getClassLoader(),
78:                        new Class[] { PropertyChangeListener.class },
79:                        new ButtonStateAdapter(this , super 
80:                                .createActionPropertyChangeListener(a)));
81:            }
82:
83:            /**
84:             * Overridden to initialize selection state according to action
85:             */
86:            protected void configurePropertiesFromAction(Action a) {
87:                super .configurePropertiesFromAction(a);
88:                setSelected(((AbstractSelectableAction) a).getState());
89:            }
90:        }
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