FilterGUIpublic class FilterGUI extends JComponent | FilterGUI implements a back-and-forth list, ie, two columns of items, in
which items can be moved back and forth between them with "Add" and "Del"
buttons.
This is meant to provide a framework for Java programs that want
to provide chaining of various filters, or any other example where
you want to move items between an inactive list and an active list.
It does some neat things, including balancing the widths of the
two JLists.
The test classes are called Filters because this type of selection GUI
is often used to select chained filters, but the FilterGUI is much
more general than this: a list of files to include/exclude, a list of
users, or a list of filters; any of these can be used.
TODO: fix balancing (have main pack() then call adjustWidths()?).
Set single-selection mode on the scrolling lists.
And maybe find a more standard name for this thing. |
| Fields Summary |
|---|
| protected final JList | addableList | | protected final FilterGUIListModel | addableListModel | | protected final JList | currentList | | protected final FilterGUIListModel | currentListModel |
| Constructors Summary |
|---|
public FilterGUI(Object[] data, int defaultIndex)Construct the object including its GUI
super();
setLayout(new BorderLayout(5, 5));
addableList = new JList();
addableListModel = new FilterGUIListModel(addableList);
addableList.setModel(addableListModel);
addableList.setBorder(BorderFactory.createEtchedBorder());
// addableList.setText("Addable");
for (int i=0; i<data.length; i++) {
if (i != defaultIndex)
addableListModel.add(data[i]);
}
currentList = new JList();
currentListModel = new FilterGUIListModel(currentList);
currentList.setModel(currentListModel);
// currentList.setText("Current");
currentList.setBorder(BorderFactory.createEtchedBorder());
if (defaultIndex >= 0)
currentListModel.add(data[defaultIndex]);
add(BorderLayout.WEST, addableList);
JPanel c = new JPanel();
c.setLayout(new BoxLayout(c, BoxLayout.Y_AXIS));
JButton addButton, delButton;
c.add(addButton = new JButton("-->"));
addButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
int i = addableList.getSelectedIndex();
if (i < 0 || i >= addableListModel.size())
return;
Object o = addableList.getSelectedValue();
if (o == null)
return;
addableListModel.remove(o);
addableList.setSelectedIndex(-1);
currentListModel.add(o);
}
});
c.add(delButton = new JButton("<--"));
delButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
int i = currentList.getSelectedIndex();
if (i < 0 || i >= currentListModel.size())
return;
Object o = currentList.getSelectedValue();
if (o == null)
return;
currentListModel.remove(o);
currentList.setSelectedIndex(-1);
addableListModel.add(o);
}
});
add(BorderLayout.CENTER, c);
add(BorderLayout.EAST, currentList);
// Balance Widths
// Should get longest toString() from list.
addableList.setPrototypeCellValue("Some Filter Name");
currentList.setPrototypeCellValue("Some Filter Name");
|
| Methods Summary |
|---|
| public java.util.List | getSelected()Retrieve the list of currently-selected objects
return currentListModel;
|
|
