Source Code Cross Referenced for TargetableAction.java in  » Swing-Library » swingx » org » jdesktop » swingx » action » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Swing Library » swingx » org.jdesktop.swingx.action 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * $Id: TargetableAction.java,v 1.3 2005/10/10 18:02:41 rbair Exp $
003:         *
004:         * Copyright 2004 Sun Microsystems, Inc., 4150 Network Circle,
005:         * Santa Clara, California 95054, U.S.A. All rights reserved.
006:         *
007:         * This library is free software; you can redistribute it and/or
008:         * modify it under the terms of the GNU Lesser General Public
009:         * License as published by the Free Software Foundation; either
010:         * version 2.1 of the License, or (at your option) any later version.
011:         * 
012:         * This library is distributed in the hope that it will be useful,
013:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
014:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
015:         * Lesser General Public License for more details.
016:         * 
017:         * You should have received a copy of the GNU Lesser General Public
018:         * License along with this library; if not, write to the Free Software
019:         * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
020:         */
021:
022:        package org.jdesktop.swingx.action;
023:
024:        import java.awt.event.ActionEvent;
025:        import java.awt.event.ItemEvent;
026:
027:        import javax.swing.Icon;
028:
029:        /**
030:         * A class that represents a dynamically targetable action. The invocation of this
031:         * action will be dispatched to the <code>TargetManager</code> instance.
032:         * <p>
033:         * You would create instances of this class to let the TargetManager handle the
034:         * action invocations from the ui components constructed with this action.
035:         * The TargetManager could be configured depending on application state to
036:         * handle these actions.
037:         *
038:         * @see TargetManager
039:         * @author Mark Davidson
040:         */
041:        public class TargetableAction extends AbstractActionExt {
042:
043:            private TargetManager targetManager;
044:
045:            public TargetableAction() {
046:                this ("action");
047:            }
048:
049:            public TargetableAction(String name) {
050:                super (name);
051:            }
052:
053:            /**
054:             * @param name display name of the action
055:             * @param command the value of the action command key
056:             */
057:            public TargetableAction(String name, String command) {
058:                super (name, command);
059:            }
060:
061:            /**
062:             * @param name display name of the action
063:             * @param command the value of the action command key
064:             * @param icon icon to display
065:             */
066:            public TargetableAction(String name, String command, Icon icon) {
067:                super (name, command, icon);
068:            }
069:
070:            public TargetableAction(String name, Icon icon) {
071:                super (name, icon);
072:            }
073:
074:            /**
075:             * Set target manager which will handle this command. This action
076:             * may be reset to use the singleton instance if set to null.
077:             *
078:             * @param tm the target manager instance to dispatch the actions
079:             */
080:            public void setTargetManager(TargetManager tm) {
081:                this .targetManager = tm;
082:            }
083:
084:            /**
085:             * Returns the target manager instance which will be used for action
086:             * dispatch. If the target manager has not previously been set then the
087:             * singleton instance will be returned.
088:             *
089:             * @return a non null target manager
090:             */
091:            public TargetManager getTargetManager() {
092:                if (targetManager == null) {
093:                    targetManager = TargetManager.getInstance();
094:                }
095:                return targetManager;
096:            }
097:
098:            // Callbacks...
099:
100:            /**
101:             * Callback for command actions. This event will be redispatched to
102:             * the target manager along with the value of the Action.ACTION_COMMAND_KEY
103:             *
104:             * @param evt event which will be forwarded to the TargetManager
105:             * @see TargetManager
106:             */
107:            public void actionPerformed(ActionEvent evt) {
108:                if (!isStateAction()) {
109:                    // Do not process this event if it's a toggle action.
110:                    getTargetManager().doCommand(getActionCommand(), evt);
111:                }
112:            }
113:
114:            /**
115:             * Callback for toggle actions. This event will be redispatched to
116:             * the target manager along with value of the the Action.ACTION_COMMAND_KEY
117:             *
118:             * @param evt event which will be forwarded to the TargetManager
119:             * @see TargetManager
120:             */
121:            public void itemStateChanged(ItemEvent evt) {
122:                // Update all objects that share this item
123:                boolean newValue;
124:                boolean oldValue = isSelected();
125:
126:                if (evt.getStateChange() == ItemEvent.SELECTED) {
127:                    newValue = true;
128:                } else {
129:                    newValue = false;
130:                }
131:
132:                if (oldValue != newValue) {
133:                    setSelected(newValue);
134:
135:                    getTargetManager().doCommand(getActionCommand(), evt);
136:                }
137:            }
138:
139:            public String toString() {
140:                return super.toString();
141:            }
142:        }
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