001    /*
002      Copyright (C) 2001-2003 Laurent Martelli <laurent@aopsys.com>
003      
004      This program is free software; you can redistribute it and/or modify
005      it under the terms of the GNU Lesser General Public License as
006      published by the Free Software Foundation; either version 2 of the
007      License, or (at your option) any later version.
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 Lesser General Public License for more details.
013    
014      You should have received a copy of the GNU Lesser 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    package org.objectweb.jac.aspects.gui.swing;
019    
020    import java.awt.Component;
021    import javax.swing.JComponent;
022    import javax.swing.JTable;
023    import javax.swing.UIManager;
024    import javax.swing.table.TableCellRenderer;
025    import org.apache.log4j.Logger;
026    import org.objectweb.jac.aspects.gui.FieldUpdate; 
027    import org.objectweb.jac.aspects.gui.Utils; 
028    import org.objectweb.jac.core.rtti.FieldItem;
029    
030    public abstract class AbstractFieldView extends AbstractView 
031        implements FieldUpdate, TableCellRenderer
032    {
033        static Logger logger = Logger.getLogger("gui.table");
034    
035        // substance and field are required so that we can register and
036        // unregister ourself from fieldUpdated events on close()
037        Object substance;
038        FieldItem field;
039    
040        boolean isCellViewer = false;
041    
042        public AbstractFieldView(Object substance, FieldItem field) {
043            this.substance = substance;
044            this.field = field;
045    
046            Utils.registerField(substance,field,this);
047        }
048    
049        public AbstractFieldView() {
050            substance = null;
051            field = null;
052        }
053    
054        /**
055         * Sets the font of the component for use in a table cell
056         */
057        protected void setTableFont() {
058            JComponent component = getComponent();
059            if (component!=null) {
060                component.setFont(UIManager.getFont("Table.font"));        
061            }
062        }
063    
064        public abstract void setValue(Object value);
065    
066        public void setSubstance(Object substance) {
067            Utils.unregisterField(this.substance,field,this);
068            this.substance = substance;
069            Utils.registerField(substance,field,this);
070        }
071    
072        public Object getSubstance() {
073            return substance;
074        }
075    
076        public void setField(FieldItem field) {
077            Utils.unregisterField(substance,this.field,this);
078            this.field = field;
079            Utils.registerField(substance,field,this);
080        }
081    
082        public FieldItem getField() {
083            return field;
084        }
085    
086        public void setAutoUpdate(boolean autoUpdate) {
087            // TODO ...
088        }
089    
090        public void close(boolean validate) {
091            Utils.unregisterField(substance,field,this);
092        }
093       
094        // FieldUpdate interface
095        public void fieldUpdated(Object substance, 
096                                 FieldItem field, Object value, 
097                                 Object param) {
098            setValue(value);
099        }
100    
101        // TableCellRenderer
102        public Component getTableCellRendererComponent(
103            JTable table, Object value, 
104            boolean isSelected, boolean hasFocus, 
105            int row, int column) 
106        {
107            logger.debug(
108                this+".getTableCellRendererComponent("+row+","+column+","+isSelected+")");
109            JComponent component = getComponent();
110          
111            if (component!=null) {
112                component.setOpaque(true); // so that the background is really drawn
113            }
114            setOpaque(true); // so that the background is really drawn
115             
116            if (isSelected) {
117                if (component!=null) {
118                    component.setForeground(table.getSelectionForeground());
119                    component.setBackground(table.getSelectionBackground());
120                }
121                setForeground(table.getSelectionForeground());
122                setBackground(table.getSelectionBackground());
123            } else {
124                if (component!=null) {
125                    component.setForeground(table.getForeground());
126                    component.setBackground(table.getBackground());
127                }
128                setForeground(table.getForeground());
129                setBackground(table.getBackground());
130            }
131            setValue(value); 
132    
133            return this;
134        }
135    
136        /**
137        * Used by getTableCellRendererComponent. setForeground(),
138        * setBackground() and setFont() will be called on this component
139        * if it is not null; */
140        protected JComponent getComponent() {
141            return null;
142        }
143    }