private static int getComboBoxBaselineResizeBehavior(JComboBox cb) {
if (cb.isEditable()) {
return getBaselineResizeBehavior(cb.getEditor().getEditorComponent());
}
ListCellRenderer renderer = cb.getRenderer();
if (renderer == null) {
if (brbListCellRenderer == null) {
brbListCellRenderer = new DefaultListCellRenderer();
}
renderer = brbListCellRenderer;
}
Object value = null;
Object prototypeValue = cb.getPrototypeDisplayValue();
if (prototypeValue != null) {
value = prototypeValue;
} else if (cb.getModel().getSize() > 0) {
value = cb.getModel().getElementAt(0);
}
if (value != null) {
if (brbList == null) {
brbList = new JList();
}
Component component = renderer.getListCellRendererComponent(brbList, value, -1, false, false);
return getBaselineResizeBehavior(component);
}
return BRB_OTHER;
}
public void paintCurrentValue(Graphics g, Rectangle bounds, boolean hasFocus) {
ListCellRenderer renderer = comboBox.getRenderer();
Component c;
Dimension d;
c =
renderer.getListCellRendererComponent(
listBox, comboBox.getSelectedItem(), -1, false, false);
c.setFont(comboBox.getFont());
if (comboBox.isEnabled()) {
c.setForeground(comboBox.getForeground());
c.setBackground(comboBox.getBackground());
} else {
c.setForeground(UIManager.getColor("ComboBox.disabledForeground"));
c.setBackground(UIManager.getColor("ComboBox.disabledBackground"));
}
d = c.getPreferredSize();
currentValuePane.paintComponent(g, c, comboBox, bounds.x, bounds.y, bounds.width, d.height);
}
/**
* Calculates the placement and size of the popup portion of the combo box based on the combo
* box location and the enclosing screen bounds. If no transformations are required, then the
* returned rectangle will have the same values as the parameters.
*
* <p>In addition to the superclass behavior, this class offers to use the combo's popup
* prototype display value to compute the popup menu width. This is an optional feature of the
* JGoodies Plastic L&fs implemented via a client property key.
*
* <p>If a prototype is set, the popup width is the maximum of the combobox width and the
* prototype based popup width. For the latter the renderer is used to render the prototype. The
* prototype based popup width is the prototype's width plus the scrollbar width - if any. The
* scrollbar test checks if there are more items than the combo's maximum row count.
*
* @param px starting x location
* @param py starting y location
* @param pw starting width
* @param ph starting height
* @return a rectangle which represents the placement and size of the popup
* @see Options#COMBO_POPUP_PROTOTYPE_DISPLAY_VALUE_KEY
* @see JComboBox#getMaximumRowCount()
*/
protected Rectangle computePopupBounds(int px, int py, int pw, int ph) {
Rectangle defaultBounds = super.computePopupBounds(px, py, pw, ph);
Object popupPrototypeDisplayValue =
comboBox.getClientProperty(Options.COMBO_POPUP_PROTOTYPE_DISPLAY_VALUE_KEY);
if (popupPrototypeDisplayValue == null) {
return defaultBounds;
}
ListCellRenderer renderer = list.getCellRenderer();
Component c =
renderer.getListCellRendererComponent(list, popupPrototypeDisplayValue, -1, true, true);
pw = c.getPreferredSize().width;
boolean hasVerticalScrollBar = comboBox.getItemCount() > comboBox.getMaximumRowCount();
if (hasVerticalScrollBar) {
// Add the scrollbar width.
JScrollBar verticalBar = scroller.getVerticalScrollBar();
pw += verticalBar.getPreferredSize().width;
}
Rectangle prototypeBasedBounds = super.computePopupBounds(px, py, pw, ph);
return prototypeBasedBounds.width > defaultBounds.width
? prototypeBasedBounds
: defaultBounds;
}
public final Component getListCellRendererComponent(
final JList list,
final Object value,
final int index,
final boolean isSelected,
final boolean cellHasFocus) {
mySeparator = false;
myIcon = null;
myText = null;
myForeground = null;
myBackground = null;
myFont = null;
myToolTipText = null;
@SuppressWarnings("unchecked")
final T t = (T) value;
customize(list, t, index, isSelected, cellHasFocus);
if (mySeparator) {
final TitledSeparator separator = new TitledSeparator(myText);
separator.setBorder(BorderFactory.createEmptyBorder(0, 2, 0, 0));
if (!UIUtil.isUnderGTKLookAndFeel()) {
separator.setOpaque(false);
separator.setBackground(UIUtil.TRANSPARENT_COLOR);
separator.getLabel().setOpaque(false);
separator.getLabel().setBackground(UIUtil.TRANSPARENT_COLOR);
}
return separator;
}
final Component component =
myOriginalRenderer.getListCellRendererComponent(
list, value, index, isSelected, cellHasFocus);
if (component instanceof JLabel) {
final JLabel label = (JLabel) component;
label.setIcon(myIcon);
if (myText != null) label.setText(myText);
if (myForeground != null) label.setForeground(myForeground);
if (myBackground != null && !isSelected) label.setBackground(myBackground);
if (myFont != null) label.setFont(myFont);
label.setToolTipText(myToolTipText);
}
return component;
}
public Component getListCellRendererComponent(
JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) {
String message;
if (value == null) {
message = ""; // NOI18N
} else {
assert value instanceof SourceLevelKey;
SourceLevelKey key = (SourceLevelKey) value;
if (key.isBroken()) {
message =
"<html><font color=\"#A40000\">" // NOI18N
+ NbBundle.getMessage(
PlatformUiSupport.class,
"TXT_InvalidSourceLevel", // NOI18N
key.getDisplayName());
} else {
message = key.getDisplayName();
}
}
return delegate.getListCellRendererComponent(list, message, index, isSelected, cellHasFocus);
}