下面列出了javax.swing.JComboBox#getModel ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
private void addToModel (final Revision newItem, final JComboBox cmbDiffTree) {
DefaultComboBoxModel model = (DefaultComboBoxModel) cmbDiffTree.getModel();
for (int i = 0; i < model.getSize(); ++i) {
final Object item = model.getElementAt(i);
if (item instanceof Revision && ((Revision) item).getCommitId().equals(newItem.getCommitId())
&& ((Revision) item).getRevision().equals(newItem.getRevision())) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run () {
cmbDiffTree.setSelectedItem(item);
}
});
return;
}
}
model.addElement(newItem);
EventQueue.invokeLater(new Runnable() {
@Override
public void run () {
cmbDiffTree.setSelectedItem(newItem);
}
});
}
protected void setScriptingLanguage( final String lang, final JComboBox languageField ) {
if ( lang == null ) {
languageField.setSelectedItem( null );
return;
}
final ListModel model = languageField.getModel();
for ( int i = 0; i < model.getSize(); i++ ) {
final ScriptEngineFactory elementAt = (ScriptEngineFactory) model.getElementAt( i );
if ( elementAt == null ) {
continue;
}
if ( elementAt.getNames().contains( lang ) ) {
languageField.setSelectedItem( elementAt );
return;
}
}
}
/**
* Insert the given item into the combo box, and set it as first selected
* item. If the item already exists, it is removed, so there are no
* duplicates.
* @param combo
* @param item
*/
public static void insertIntoCombo(JComboBox combo, Object item) {
MutableComboBoxModel model = (MutableComboBoxModel) combo.getModel();
if (model.getSize() == 0) {
model.insertElementAt(item, 0);
return;
}
Object o = model.getElementAt(0);
if (o.equals(item)) {
return;
}
model.removeElement(item);
model.insertElementAt(item, 0);
combo.setSelectedIndex(0);
}
/**
* Checks if the item is in the combobox. If yes, then it is moved to the beginning,
* otherwise, the item is added as first.
* @param <T> the element type
* @param combobox the combobox
* @param item the item
*/
public static <T> void addFirstItem(JComboBox<T> combobox, T item) {
int idx = -1;
DefaultComboBoxModel<T> model = (DefaultComboBoxModel<T>)combobox.getModel();
for (int i = 0; i < model.getSize(); i++) {
T t = model.getElementAt(i);
if (Objects.equals(t, item)) {
idx = i;
break;
}
}
model.insertElementAt(item, 0);
if (idx >= 0) {
model.removeElementAt(idx + 1);
}
}
/**
* Insert the given item into the combo box, and set it as first selected
* item. If the item already exists, it is removed, so there are no
* duplicates.
* @param combo
* @param item the item to insert. if it's null, then nothing is inserted
*/
public static void insertIntoCombo(JComboBox combo, Object item) {
if(item == null) {
return;
}
MutableComboBoxModel model = (MutableComboBoxModel) combo.getModel();
if (model.getSize() == 0) {
model.insertElementAt(item, 0);
return;
}
Object o = model.getElementAt(0);
if (o.equals(item)) {
return;
}
model.removeElement(item);
model.insertElementAt(item, 0);
combo.setSelectedIndex(0);
}
protected void setScriptingLanguage( final String lang, final JComboBox languageField ) {
if ( lang == null ) {
languageField.setSelectedItem( null );
return;
}
final ListModel model = languageField.getModel();
for ( int i = 0; i < model.getSize(); i++ ) {
final ScriptEngineFactory elementAt = (ScriptEngineFactory) model.getElementAt( i );
if ( elementAt == null ) {
continue;
}
if ( elementAt.getNames().contains( lang ) ) {
languageField.setSelectedItem( elementAt );
return;
}
}
}
protected void setScriptingLanguage( final String lang, final JComboBox languageField ) {
if ( lang == null ) {
languageField.setSelectedItem( null );
return;
}
final ListModel model = languageField.getModel();
for ( int i = 0; i < model.getSize(); i++ ) {
final ScriptEngineFactory elementAt = (ScriptEngineFactory) model.getElementAt( i );
if ( elementAt == null ) {
continue;
}
if ( elementAt.getNames().contains( lang ) ) {
languageField.setSelectedItem( elementAt );
return;
}
}
}
private static Component getRendererComponent(JComboBox comboBox, int option) {
ComboBoxModel model = comboBox.getModel();
if (option >= model.getSize()) {
throw new NoSuchElementException("Index out-of-bounds error on JComboBox: " + option, null);
}
Component rendererComponent = comboBox.getRenderer().getListCellRendererComponent(new JList(model),
model.getElementAt(option), option, false, false);
return rendererComponent;
}
private static void performBrowseType(final JComboBox combo, final ClasspathInfo cpInfo) {
final ReturnTypeComboBoxModel model = (ReturnTypeComboBoxModel) combo.getModel();
combo.setPopupVisible(false);
SwingUtilities.invokeLater(new Runnable() {
public void run() {
final ElementHandle<TypeElement> handle = TypeElementFinder.find(cpInfo, new TypeElementFinder.Customizer() {
public Set<ElementHandle<TypeElement>> query(ClasspathInfo classpathInfo, String textForQuery, NameKind nameKind, Set<SearchScope> searchScopes) {//GEN-LAST:event_browseButtonActionPerformed
return classpathInfo.getClassIndex().getDeclaredTypes(textForQuery, nameKind, searchScopes);
}
public boolean accept(ElementHandle<TypeElement> typeHandle) {
return true;
}
});
combo.setPopupVisible(false);
if (handle == null) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
setSelectedItem(combo, model.getPreviousItem());
}
});
} else {
setSelectedItem(combo, handle.getQualifiedName());
}
}
});
}
private void assertModel (Map<String, String> items, JComboBox combo, List<String> expected) {
ComboBoxModel model = combo.getModel();
assertEquals(expected.size() / 2, model.getSize());
for (int i = 0; i < model.getSize(); ++i) {
assertEquals(expected.get(i * 2), model.getElementAt(i));
assertEquals(expected.get(i * 2 + 1), items.get((String) model.getElementAt(i)));
}
}
private void updateComboBoxes(List<FormItem> items) {
for (FormItem item : items) {
JComponent field = item.getField();
if (field instanceof JComboBox) {
@SuppressWarnings("unchecked")
JComboBox<String> box = (JComboBox<String>) field;
List<String> newPossibleValues = item.getPossibleValues();
if (!boxModelIsSame(box, newPossibleValues)) {
MutableComboBoxModel<String> mmodel = (MutableComboBoxModel<String>) box.getModel();
replaceBoxModelValues(mmodel, newPossibleValues);
mmodel.setSelectedItem(item.getCurrentValue());
}
}
}
}
private void setPackage(JComboBox packageCombo, String _package) {
ComboBoxModel model = packageCombo.getModel();
for (int i = 0; i < model.getSize(); i++) {
if (model.getElementAt(i).toString().equals(_package)) {
model.setSelectedItem(model.getElementAt(i));
return;
}
}
((JTextComponent) packageCombo.getEditor().getEditorComponent()).setText(_package);
}
static void selectCombo(JComboBox comboBox, String value) {
if(value == null || value.trim().length() == 0) {
return;
}
ComboBoxModel model = comboBox.getModel();
for(int i = 0; i < model.getSize(); i++) {
if(value.equals(model.getElementAt(i).toString())) {
comboBox.setSelectedIndex(i);
return;
}
}
}
public static void savePrefs(Preferences prefs, String prefKey, JComboBox combo, String newValidValue) {
if (newValidValue == null) {
return;
}
DefaultComboBoxModel comboModel = (DefaultComboBoxModel) combo.getModel();
int existingIndex = comboModel.getIndexOf(newValidValue);
if (existingIndex >= 0) {
comboModel.removeElementAt(existingIndex);
}
comboModel.insertElementAt(newValidValue, 0);
combo.setSelectedIndex(0);
StringBuilder entries = new StringBuilder();
int size = Math.min(comboModel.getSize(), 20);
for (int i = 0; i < size; i++) {
entries.append(comboModel.getElementAt(i));
if (i != size - 1) {
entries.append(DELIMITER);
}
}
while (entries.length() > Preferences.MAX_VALUE_LENGTH) {
int lastIndex = entries.lastIndexOf(DELIMITER);
if (lastIndex == -1) {
break;
} else {
entries.delete(lastIndex, entries.length());
}
}
prefs.put(prefKey, entries.toString());
try {
prefs.flush();
} catch (Throwable e) {
e.printStackTrace();
}
}
private void setModel(JComboBox box, ArtifactAction... actions) {
ComboBoxModel oldModel = box.getModel();
box.setModel(getComboBoxModel(actions));
if (oldModel.getSize() != actions.length) {
box.firePropertyChange("itemCount", oldModel.getSize(), actions.length);
}
}
public void actionPerformed( final ActionEvent e ) {
if ( adjustingToExternalInput ) {
return;
}
final Object theSource = e.getSource();
if ( theSource instanceof JComboBox ) {
final JComboBox theComboBox = (JComboBox) theSource;
final KeyedComboBoxModel theModel = (KeyedComboBoxModel) theComboBox.getModel();
updateContext.setParameterValue( key, theModel.getSelectedKey() );
}
}
public ComboBoxAutoComplete(JComboBox<String> jComboBox) {
this.jComboBox = jComboBox;
this.defaultModel = jComboBox.getModel();
this.documentUpdated = false;
}
private void checkOldComboBoxModel(JComboBox comboBox) {
ComboBoxModel oldModel = comboBox.getModel();
if ((oldModel != null) && (oldModel.getSize() != 0)) {
throw new IllegalStateException("The combo-box must be empty."); //NOI18N
}
}
private void setupStatsPanel() {
statsPanel.setVisible(false);
JLabel label = new JLabel("Statistic:");
label.setHorizontalAlignment(SwingConstants.TRAILING);
label.setFont(Styles.LABEL);
statsPanel.add(label);
// Object and not Statistic to support displaying the granularity value
JComboBox<Object> statistic = new JComboBox<Object>();
DefaultComboBoxModel<Object> model = (DefaultComboBoxModel<Object>) statistic.getModel();
model.addElement(Statistic.AVERAGE);
model.addElement(Statistic.WEIGHTED_AVERAGE);
model.addElement(Statistic.MINIMUM);
model.addElement(Statistic.MAXIMUM);
model.addElement(Statistic.GRANULARITY_MAXIMUM.getName(gui.getGranularity()));
model.addElement(Statistic.STD_DEV);
model.addElement(Statistic.MEDIAN);
model.addElement(Statistic.SUM);
model.addElement(Statistic.COUNT);
statistic.setSelectedItem(Statistic.AVERAGE);
statistic.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
@SuppressWarnings("unchecked")
Object o = ((JComboBox<Object>) e.getSource()).getModel().getSelectedItem();
if (o.getClass().equals(String.class)) {
((ByDataSetTableModel) dataSetTable.getModel()).setStatistic(Statistic.GRANULARITY_MAXIMUM);
}
else {
((ByDataSetTableModel) dataSetTable.getModel()).setStatistic((Statistic) o);
}
}
});
statsPanel.add(statistic);
}
protected void prepareCombo(JComboBox combo, int row, int column){
Feature feature = featureList.get(row);
DefaultComboBoxModel comboModel = (DefaultComboBoxModel)combo.getModel();
comboModel.removeAllElements();
switch(column){
case NAME_COL:
List<String> fNames = new ArrayList<String>();
if(schema != null && schema.getFeatureSchemaSet() != null){
Iterator<FeatureSchema> fSchemaIter = schema.getFeatureSchemaSet().iterator();
while(fSchemaIter.hasNext())
fNames.add(fSchemaIter.next().getFeatureName());
}
if(!fNames.contains(feature.name))fNames.add(feature.name);
Collections.sort(fNames);
for(Iterator<String> nameIter = fNames.iterator();
nameIter.hasNext();
comboModel.addElement(nameIter.next()));
combo.getEditor().getEditorComponent().setBackground(defaultBackground);
combo.setSelectedItem(feature.name);
break;
case VALUE_COL:
List<Object> fValues = new ArrayList<Object>();
if(feature.isSchemaFeature()){
Set<Object> permValues = schema.getFeatureSchema(feature.name).
getPermittedValues();
if(permValues != null) fValues.addAll(permValues);
}
if(!fValues.contains(feature.value)) fValues.add(feature.value);
Collections.sort(fValues, defaultComparator);
for(Iterator<Object> valIter = fValues.iterator();
valIter.hasNext();
comboModel.addElement(valIter.next()));
combo.getEditor().getEditorComponent().setBackground(feature.isCorrect() ?
defaultBackground :
(feature.isRequired() ? REQUIRED_WRONG : OPTIONAL_WRONG));
combo.setSelectedItem(feature.value);
break;
default: ;
}
}