Source Code Cross Referenced for SSpinner.java in  » J2EE » Sofia » com » salmonllc » swing » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » J2EE » Sofia » com.salmonllc.swing 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        //** Copyright Statement ***************************************************
002:        //The Salmon Open Framework for Internet Applications (SOFIA)
003:        // Copyright (C) 1999 - 2002, Salmon LLC
004:        //
005:        // This program is free software; you can redistribute it and/or
006:        // modify it under the terms of the GNU General Public License version 2
007:        // as published by the Free Software Foundation;
008:        //
009:        // This program is distributed in the hope that it will be useful,
010:        // but WITHOUT ANY WARRANTY; without even the implied warranty of
011:        // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
012:        // GNU General Public License for more details.
013:        //
014:        // You should have received a copy of the GNU General Public License
015:        // along with this program; if not, write to the Free Software
016:        // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
017:        //
018:        // For more information please visit http://www.salmonllc.com
019:        //** End Copyright Statement ***************************************************
020:
021:        package com.salmonllc.swing;
022:
023:        import com.salmonllc.swing.events.ValueChangedEvent;
024:        import com.salmonllc.swing.events.ValueChangedListener;
025:        import com.salmonllc.sql.DataStoreBuffer;
026:        import com.salmonllc.sql.ModelChangedEvent;
027:        import com.salmonllc.sql.ModelChangedListener;
028:        import javax.swing.*;
029:
030:        /**
031:         * SOFIA implementation of a JSpinner. This Combo Box can be bound to a DataStore column
032:         */
033:
034:        public class SSpinner extends JSpinner implements  SComponent,
035:                ModelChangedListener {
036:            private SComponentHelper _helper;
037:            private String _dsCol;
038:            private DataStoreBuffer _ds;
039:
040:            /**
041:             * Constructs a spinner with an <code>Integer SpinnerNumberModel</code>
042:             * with initial value 0 and no minimum or maximum limits.
043:             */
044:            public SSpinner() {
045:                _helper = new SComponentHelper(this );
046:            }
047:
048:            /**
049:             * Constructs a complete spinner with pair of next/previous buttons
050:             * and an editor for the <code>SpinnerModel</code>.
051:             */
052:            public SSpinner(SpinnerModel model) {
053:                super (model);
054:                _helper = new SComponentHelper(this );
055:            }
056:
057:            /**
058:             * Binds the component to a DataStore column
059:             * @param dsb The DataStore to bind to
060:             * @param column  The column to bind to
061:             */
062:            public void setColumn(DataStoreBuffer dsb, String column) {
063:                _ds = dsb;
064:                _dsCol = column;
065:                _ds.addModelChangedListener(this );
066:                evalColumn();
067:            }
068:
069:            /**
070:             * @see ModelChangedListener#modelChanged(ModelChangedEvent)
071:             */
072:            public void modelChanged(ModelChangedEvent evt) {
073:                evalColumn();
074:            }
075:
076:            private void evalColumn() {
077:                _helper.setDataDirty(true);
078:                try {
079:                    if (_ds != null && _dsCol != null) {
080:                        Object value = _ds.getAny(_dsCol);
081:                        setValue(value);
082:                    }
083:                } catch (Exception e) {
084:                    _helper.setDataDirty(false);
085:                    SpinnerModel m = getModel();
086:                    if (m instanceof  SpinnerNumberModel)
087:                        setValue(((SpinnerNumberModel) m).getMinimum());
088:                    else if (m instanceof  SpinnerListModel)
089:                        setValue(((SpinnerListModel) m).getList().get(0));
090:                    else if (m instanceof  SpinnerDateModel)
091:                        setValue(((SpinnerDateModel) m).getStart());
092:                    fireStateChanged();
093:                }
094:                _helper.setDataDirty(false);
095:            }
096:
097:            /**
098:             * This method is used by the framework and should not be called directly
099:             */
100:            public ValueChangedEvent generateValueChangedEvent() {
101:                try {
102:                    if (_ds == null)
103:                        return null;
104:                    else {
105:                        String val = null;
106:                        if (getValue() != null)
107:                            val = getValue().toString();
108:                        return new ValueChangedEvent(this , _ds
109:                                .getFormattedString(_dsCol), val, _ds, _ds
110:                                .getRow(), _ds.getColumnIndex(_dsCol));
111:                    }
112:
113:                } catch (Exception e) {
114:                    e.printStackTrace();
115:                    return null;
116:                }
117:            }
118:
119:            /**
120:             * This method is used by the framework and should not be called directly
121:             */
122:            public SComponentHelper getHelper() {
123:                return _helper;
124:            }
125:
126:            /**
127:             * This method adds a listener the will be notified when the value in this component changes.
128:             * @param l The listener to add.
129:             */
130:            public void addValueChangedListener(ValueChangedListener l) {
131:                _helper.addValueChangedListener(l);
132:            }
133:
134:            /**
135:             * This method removes a listener from the list that will be notified if the text in the component changes.
136:             * @param l The listener to remove.
137:             */
138:            public void removeValueChangedListener(ValueChangedListener l) {
139:                _helper.removeValueChangedListener(l);
140:            }
141:
142:        }
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