Source Code Cross Referenced for CheckBox.java in  » XML-UI » xmlgui » org » beryl » gui » widgets » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » XML UI » xmlgui » org.beryl.gui.widgets 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Beryl - A web platform based on XML, XSLT and Java
003:         * This file is part of the Beryl XML GUI
004:         *
005:         * Copyright (C) 2004 Wenzel Jakob <wazlaf@tigris.org>
006:         *
007:         * This program 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 program 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 program; if not, write to the Free Software
019:         * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-3107  USA
020:         */
021:
022:        package org.beryl.gui.widgets;
023:
024:        import java.awt.Component;
025:        import java.awt.event.ActionEvent;
026:        import java.awt.event.ActionListener;
027:
028:        import javax.swing.AbstractButton;
029:        import javax.swing.JCheckBox;
030:        import javax.swing.JCheckBoxMenuItem;
031:
032:        import org.beryl.gui.GUIException;
033:        import org.beryl.gui.Widget;
034:        import org.beryl.gui.WidgetInfo;
035:        import org.beryl.gui.model.MapChangeEvent;
036:        import org.beryl.gui.model.MapDataModel;
037:        import org.beryl.gui.model.ModelChangeEvent;
038:
039:        public class CheckBox extends Widget {
040:            protected static WidgetInfo checkBoxInfo = null;
041:            private AbstractButton checkBox = null;
042:            private String key = null;
043:            private boolean processEvents = true;
044:
045:            static {
046:                checkBoxInfo = new WidgetInfo(CheckBox.class, widgetInfo);
047:                checkBoxInfo.addProperty("key", "string", "");
048:                checkBoxInfo.addProperty("text", "istring", "");
049:            };
050:
051:            public CheckBox(Widget parent, String name) throws GUIException {
052:                super (parent, name);
053:
054:                if (parent != null
055:                        && (parent instanceof  Menu || parent instanceof  PopupMenu))
056:                    checkBox = new JCheckBoxMenuItem();
057:                else
058:                    checkBox = new JCheckBox();
059:
060:                checkBox.addActionListener(new ActionListener() {
061:                    public void actionPerformed(ActionEvent e) {
062:                        try {
063:                            MapDataModel model = getDataModel();
064:                            if (model != null && key != null) {
065:                                model.setValue(CheckBox.this , key, new Boolean(
066:                                        checkBox.isSelected()));
067:                            }
068:                        } catch (GUIException ex) {
069:                            throw new RuntimeException(ex);
070:                        }
071:                    }
072:                });
073:            }
074:
075:            public void setProperty(String name, Object value)
076:                    throws GUIException {
077:                if ("key".equals(name))
078:                    key = (String) value;
079:                else
080:                    super .setProperty(name, value);
081:            }
082:
083:            private void reload() throws GUIException {
084:                MapDataModel model = getDataModel();
085:                if (model != null && key != null) {
086:                    Boolean value = (Boolean) model.getValue(key);
087:                    if (value != null) {
088:                        checkBox.setSelected(value.booleanValue());
089:                    } else {
090:                        try {
091:                            processEvents = false;
092:                            model.setValue(key, new Boolean(checkBox
093:                                    .isSelected()));
094:                        } finally {
095:                            processEvents = true;
096:                        }
097:                    }
098:                }
099:            }
100:
101:            public void modelChanged(ModelChangeEvent e) throws GUIException {
102:                if (processEvents) {
103:                    if (e.getSource() == this ) {
104:                        reload();
105:                    } else if (e instanceof  MapChangeEvent) {
106:                        MapChangeEvent event = (MapChangeEvent) e;
107:                        if (event.getKey() == null) {
108:                            reload();
109:                        } else if (event.getKey().equals(key)) {
110:                            checkBox
111:                                    .setSelected(((Boolean) event.getNewValue())
112:                                            .booleanValue());
113:                        }
114:                    }
115:                }
116:            }
117:
118:            public Component getWidget() {
119:                return checkBox;
120:            }
121:
122:            public WidgetInfo getWidgetInfo() {
123:                return checkBoxInfo;
124:            }
125:        }
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