public void propertyChange(PropertyChangeEvent e) {
if (e.getPropertyName().equals("minimum") && startAtMin) {
start = getMinimum();
}
if (e.getPropertyName().equals("minimum") || e.getPropertyName().equals("maximum")) {
Enumeration keys = getLabelTable().keys();
Hashtable<Object, Object> hashtable = new Hashtable<Object, Object>();
// Save the labels that were added by the developer
while (keys.hasMoreElements()) {
Object key = keys.nextElement();
Object value = labelTable.get(key);
if (!(value instanceof LabelUIResource)) {
hashtable.put(key, value);
}
}
clear();
createLabels();
// Add the saved labels
keys = hashtable.keys();
while (keys.hasMoreElements()) {
Object key = keys.nextElement();
put(key, hashtable.get(key));
}
((JSlider) e.getSource()).setLabelTable(this);
}
}
private void updateLabelSizes() {
Dictionary labelTable = getLabelTable();
if (labelTable != null) {
Enumeration labels = labelTable.elements();
while (labels.hasMoreElements()) {
JComponent component = (JComponent) labels.nextElement();
component.setSize(component.getPreferredSize());
}
}
}
/**
* Updates the UIs for the labels in the label table by calling {@code updateUI} on each label.
* The UIs are updated from the current look and feel. The labels are also set to their preferred
* size.
*
* @see #setLabelTable
* @see JComponent#updateUI
*/
protected void updateLabelUIs() {
Dictionary labelTable = getLabelTable();
if (labelTable == null) {
return;
}
Enumeration labels = labelTable.keys();
while (labels.hasMoreElements()) {
JComponent component = (JComponent) labelTable.get(labels.nextElement());
component.updateUI();
component.setSize(component.getPreferredSize());
}
}
/**
* {@inheritDoc}
*
* @since 1.7
*/
public boolean imageUpdate(Image img, int infoflags, int x, int y, int w, int h) {
if (!isShowing()) {
return false;
}
// Check that there is a label with such image
Enumeration elements = labelTable.elements();
while (elements.hasMoreElements()) {
Component component = (Component) elements.nextElement();
if (component instanceof JLabel) {
JLabel label = (JLabel) component;
if (SwingUtilities.doesIconReferenceImage(label.getIcon(), img)
|| SwingUtilities.doesIconReferenceImage(label.getDisabledIcon(), img)) {
return super.imageUpdate(img, infoflags, x, y, w, h);
}
}
}
return false;
}