001    /*
002      Copyright (C) 2001-2003 Renaud Pawlak, Laurent Martelli
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, but
010      WITHOUT ANY WARRANTY; without even the implied warranty of
011      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
012      Lesser General Public License for more details.
013    
014      You should have received a copy of the GNU Lesser General Public
015      License along with this program; if not, write to the Free Software
016      Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
017      USA */
018    
019    package org.objectweb.jac.aspects.gui.swing;
020    
021    import org.objectweb.jac.aspects.gui.FieldEditor;
022    import org.objectweb.jac.aspects.gui.GuiAC;
023    import org.objectweb.jac.core.rtti.FieldItem;
024    import java.awt.Dimension;
025    import java.lang.reflect.Constructor;
026    import javax.swing.JPasswordField;
027    import javax.swing.JTextField;
028    
029    /**
030     * A Swing editor component for fields values (primitive types).
031     */
032    
033    public class PrimitiveFieldEditor extends AbstractFieldEditor 
034        implements FieldEditor
035    {
036        JTextField textField;
037    
038        /**
039         * Constructs a new primitive field editor. 
040         */
041        public PrimitiveFieldEditor(Object substance, FieldItem field,
042                                    boolean password) 
043        {
044            super(substance,field);
045            init(password);
046            checkType();
047        }
048    
049        public PrimitiveFieldEditor(Object substance, FieldItem field) 
050        {
051            super(substance,field);
052            init(false);
053            checkType();
054        }
055    
056        protected void checkType() {
057            if (field!=null && field.getType().isArray())
058                throw new RuntimeException("PrimitiveFieldEditor cannot handle arrays");
059        }
060    
061        protected void init(boolean password)
062        {
063            if (password) 
064                textField = new JPasswordField();
065            else  
066                textField = new org.objectweb.jac.aspects.gui.swing.JTextField();
067            // swing "bug" workaround : prevent the textField from extending
068            // vertically.
069            Dimension minSize = textField.getPreferredSize();
070            Dimension maxSize = textField.getMaximumSize();
071            textField.setMaximumSize(new Dimension(maxSize.width,minSize.height));
072    
073            textField.addFocusListener(this);
074            add(textField);
075        }
076    
077        // FieldEditor interface
078    
079        public Object getValue() {
080            Class cl = type.getActualClass();
081            if (cl == int.class || cl == Integer.class) {
082                return new Integer(textField.getText());
083            } else if (cl == boolean.class || cl == Boolean.class) {
084                return( Boolean.valueOf(textField.getText()));
085            } else if (cl == long.class || cl == Long.class) {
086                return new Long(textField.getText());
087            } else if (cl == float.class || cl == Float.class) {
088                return new Float(textField.getText());
089            } else if (cl == double.class || cl == Double.class) {
090                return new Double(textField.getText());
091            } else if (cl == short.class || cl == Short.class) {
092                return new Short (textField.getText());
093            } else if (cl == byte.class || cl == Byte.class) {
094                return new Byte(textField.getText());
095            } else if (cl == char.class || cl == Character.class) {
096                return new Character(textField.getText().charAt(0));
097            } else if (cl == String.class) {
098                return textField.getText();
099            } else if (!cl.isArray()) {
100                try {
101                    // trying to construct the object from its textual 
102                    // representation (I think that any class should have
103                    // a constructor taking a string... this is so helpful...)
104                    // of course, this will raise an exception most of the time :-(
105                    Constructor c = cl.getConstructor(new Class[] {String.class});
106                    return c.newInstance( new Object[] {textField.getText()} );
107                } catch( Exception e ) {
108                    logger.error("Failed to instantiate "+cl.getName(),e);
109                    throw new RuntimeException("Unhandled type "+type.getName());
110                }
111            } else {
112                throw new RuntimeException("Unhandled type "+type.getName());
113            }
114        }
115    
116        public void setValue(Object value) {
117            super.setValue(value);
118            if( value == null ) value="";
119            textField.setText(GuiAC.toString(value));
120            Dimension minSize = textField.getPreferredSize();
121            minSize.width = 100;
122            textField.setMinimumSize(minSize);
123        }
124    
125        public void setWidth(int width) {
126            textField.setColumns(width);
127        }
128    
129        public void setAutoUpdate(boolean autoUpdate) {
130            // TODO
131        }
132    
133        /**
134         * Set the focus on the textField
135         */
136        public void requestFocus() {
137            textField.requestFocus();
138        }
139    
140    }