Source Code Cross Referenced for DoubleAttributeEditor.java in  » Web-Server » Jigsaw » org » w3c » jigadm » editors » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Web Server » Jigsaw » org.w3c.jigadm.editors 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        // DoubleAttributeEditor.java
002:        // $Id: DoubleAttributeEditor.java,v 1.7 2000/08/16 21:37:27 ylafon Exp $
003:        // (c) COPYRIGHT MIT and INRIA, 1997.
004:        // Please first read the full copyright statement in file COPYRIGHT.html
005:
006:        package org.w3c.jigadm.editors;
007:
008:        import java.awt.Component;
009:        import java.awt.TextComponent;
010:        import java.awt.TextField;
011:
012:        import java.awt.event.InputEvent;
013:        import java.awt.event.KeyAdapter;
014:        import java.awt.event.KeyEvent;
015:
016:        import java.util.Properties;
017:
018:        import org.w3c.tools.resources.Attribute;
019:
020:        import org.w3c.jigsaw.admin.RemoteAccessException;
021:        import org.w3c.jigsaw.admin.RemoteResource;
022:
023:        import org.w3c.jigadm.RemoteResourceWrapper;
024:
025:        public class DoubleAttributeEditor extends AttributeEditor {
026:
027:            class DoubleListener extends KeyAdapter {
028:
029:                // filter the non-numeric char
030:                public void keyPressed(KeyEvent ke) {
031:                    if (ke.getKeyCode() == KeyEvent.VK_DELETE
032:                            || ke.getKeyCode() == KeyEvent.VK_BACK_SPACE
033:                            || ke.getKeyCode() == KeyEvent.VK_UP
034:                            || ke.getKeyCode() == KeyEvent.VK_DOWN
035:                            || ke.getKeyCode() == KeyEvent.VK_LEFT
036:                            || ke.getKeyCode() == KeyEvent.VK_RIGHT)
037:                        return;
038:                    if (!(ke.getKeyChar() >= '0' && ke.getKeyChar() <= '9')
039:                            && (ke.getKeyChar() != '.')
040:                            && ke.getKeyChar() != ',') {
041:                        ke.consume();
042:                    }
043:                }
044:            }
045:
046:            private String origs;
047:            TextField widget;
048:
049:            /**
050:             * Tells if the edited value has changed
051:             * @return true if the value changed.
052:             */
053:
054:            public boolean hasChanged() {
055:                return !origs.equals(widget.getText());
056:            }
057:
058:            /**
059:             * set the current value to be the original value, ie: changed
060:             * must return <strong>false</strong> after a reset.
061:             */
062:
063:            public void clearChanged() {
064:                origs = widget.getText();
065:            }
066:
067:            /**
068:             * reset the changes (if any)
069:             */
070:
071:            public void resetChanges() {
072:                widget.setText(origs);
073:            }
074:
075:            /**
076:             * Get the current value of the edited value
077:             * @return an object or <strong>null</strong> if the object was not
078:             * initialized
079:             */
080:
081:            public Object getValue() {
082:                return new Double(widget.getText());
083:            }
084:
085:            /**
086:             * Set the value of the edited value
087:             * @param o the new value.
088:             */
089:
090:            public void setValue(Object o) {
091:                widget.setText(o.toString());
092:            }
093:
094:            /**
095:             * get the Component created by the editor.
096:             * @return a Component
097:             */
098:
099:            public Component getComponent() {
100:                return widget;
101:            }
102:
103:            /**
104:             * Initialize the editor
105:             * @param w the ResourceWrapper father of the attribute
106:             * @param a the Attribute we are editing
107:             * @param o the value of the above attribute
108:             * @param p some Properties, used to fine-tune the editor
109:             * @exception RemoteAccessException if a remote access error occurs.
110:             */
111:
112:            public void initialize(RemoteResourceWrapper w, Attribute a,
113:                    Object o, Properties p) throws RemoteAccessException {
114:                RemoteResource r = w.getResource();
115:                if (o == null) {
116:                    String v = null;
117:                    // FIXME
118:                    v = (String) r.getValue(a.getName());
119:
120:                    if (v == null)
121:                        if (a.getDefault() != null)
122:                            v = a.getDefault().toString();
123:                    if (v != null) {
124:                        origs = v;
125:                        widget.setText(origs);
126:                    }
127:                } else {
128:                    origs = o.toString();
129:                }
130:                widget.setText(origs);
131:            }
132:
133:            public DoubleAttributeEditor() {
134:                widget = new TextField();
135:                widget.addKeyListener(new DoubleListener());
136:                origs = "";
137:            }
138:        }
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