001: // LongAttributeEditor.java
002: // $Id: LongAttributeEditor.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 LongAttributeEditor extends AttributeEditor {
026:
027: class LongListener 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.consume();
040: }
041: }
042: }
043:
044: private String origs;
045: TextField widget;
046:
047: /**
048: * Tells if the edited value has changed
049: * @return true if the value changed.
050: */
051:
052: public boolean hasChanged() {
053: return !origs.equals(widget.getText());
054: }
055:
056: /**
057: * set the current value to be the original value, ie: changed
058: * must return <strong>false</strong> after a reset.
059: */
060:
061: public void clearChanged() {
062: origs = widget.getText();
063: }
064:
065: /**
066: * reset the changes (if any)
067: */
068:
069: public void resetChanges() {
070: widget.setText(origs);
071: }
072:
073: /**
074: * Get the current value of the edited value
075: * @return an object or <strong>null</strong> if the object was not
076: * initialized
077: */
078:
079: public Object getValue() {
080: return new Long(Long.parseLong(widget.getText()));
081: }
082:
083: /**
084: * Set the value of the edited value
085: * @param o the new value.
086: */
087:
088: public void setValue(Object o) {
089: widget.setText(o.toString());
090: }
091:
092: /**
093: * get the Component created by the editor.
094: * @return a Component
095: */
096:
097: public Component getComponent() {
098: return widget;
099: }
100:
101: /**
102: * Initialize the editor
103: * @param w the ResourceWrapper father of the attribute
104: * @param a the Attribute we are editing
105: * @param o the value of the above attribute
106: * @param p some Properties, used to fine-tune the editor
107: * @exception RemoteAccessException if a remote access error occurs.
108: */
109:
110: public void initialize(RemoteResourceWrapper w, Attribute a,
111: Object o, Properties p) throws RemoteAccessException {
112: RemoteResource r = w.getResource();
113: if (o == null) {
114: String v = null;
115: // FIXME
116: v = (String) r.getValue(a.getName());
117:
118: if (v == null)
119: if (a.getDefault() != null)
120: v = a.getDefault().toString();
121: if (v != null) {
122: origs = v;
123: widget.setText(origs);
124: }
125: } else {
126: origs = o.toString();
127: }
128: widget.setText(origs);
129: }
130:
131: public LongAttributeEditor() {
132: widget = new TextField();
133: widget.addKeyListener(new LongListener());
134: origs = "";
135: }
136: }
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