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Diffstat (limited to 'libjava/classpath/javax/swing/plaf/metal/MetalComboBoxUI.java')
| -rw-r--r-- | libjava/classpath/javax/swing/plaf/metal/MetalComboBoxUI.java | 372 |
1 files changed, 372 insertions, 0 deletions
diff --git a/libjava/classpath/javax/swing/plaf/metal/MetalComboBoxUI.java b/libjava/classpath/javax/swing/plaf/metal/MetalComboBoxUI.java new file mode 100644 index 000000000..b9019b70d --- /dev/null +++ b/libjava/classpath/javax/swing/plaf/metal/MetalComboBoxUI.java @@ -0,0 +1,372 @@ +/* MetalComboBoxUI.java + Copyright (C) 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package javax.swing.plaf.metal; + +import java.awt.Color; +import java.awt.Container; +import java.awt.Dimension; +import java.awt.Graphics; +import java.awt.Insets; +import java.awt.LayoutManager; +import java.awt.event.MouseEvent; +import java.beans.PropertyChangeEvent; +import java.beans.PropertyChangeListener; + +import javax.swing.ComboBoxEditor; +import javax.swing.Icon; +import javax.swing.JButton; +import javax.swing.JComboBox; +import javax.swing.JComponent; +import javax.swing.plaf.ComponentUI; +import javax.swing.plaf.basic.BasicComboBoxUI; +import javax.swing.plaf.basic.BasicComboPopup; +import javax.swing.plaf.basic.ComboPopup; + + +/** + * A UI delegate for the {@link JComboBox} component. + */ +public class MetalComboBoxUI extends BasicComboBoxUI +{ + /** + * A layout manager that arranges the editor component (if active) and the + * button that make up the combo box. + */ + public class MetalComboBoxLayoutManager + extends BasicComboBoxUI.ComboBoxLayoutManager + { + /** + * Creates a new instance of the layout manager. + */ + public MetalComboBoxLayoutManager() + { + // Nothing to do here. + } + + /** + * Arranges the editor (if visible) and button that comprise the combo + * box. + * + * @param parent the parent. + */ + public void layoutContainer(Container parent) + { + layoutComboBox(parent, this); + } + + /** + * Calls the <code>layoutContainer(Container)</code> method in the super + * class. + * + * @param parent the container. + */ + public void superLayout(Container parent) + { + super.layoutContainer(parent); + } + } + + /** + * A listener used to handle property changes in the {@link JComboBox} + * component, to ensure that the UI delegate accurately reflects the current + * state in the rendering onscreen. + */ + public class MetalPropertyChangeListener + extends BasicComboBoxUI.PropertyChangeHandler + { + /** + * Creates a new listener. + */ + public MetalPropertyChangeListener() + { + // Nothing to do here. + } + + /** + * Handles a property change event, updating the UI components as + * appropriate. + * + * @param e the event. + */ + public void propertyChange(PropertyChangeEvent e) + { + super.propertyChange(e); + String name = e.getPropertyName(); + if (name.equals("editable")) + editablePropertyChanged(e); + else if (name.equals("enabled")) + { + if (arrowButton instanceof MetalComboBoxButton) + { + arrowButton.setFocusable(!comboBox.isEditable() + && comboBox.isEnabled()); + comboBox.repaint(); + } + } + else if (name.equals("background")) + { + Color c = (Color) e.getNewValue(); + arrowButton.setBackground(c); + listBox.setBackground(c); + } + else if (name.equals("foreground")) + { + Color c = (Color) e.getNewValue(); + arrowButton.setForeground(c); + listBox.setForeground(c); + } + } + } + + /** + * A popup menu for the combo-box. + * + * @see #createPopup() + * + * @deprecated 1.4 + */ + public class MetalComboPopup extends BasicComboPopup + { + /** + * Creates a new popup. + * + * @param cBox the combo box. + */ + public MetalComboPopup(JComboBox cBox) + { + super(cBox); + } + + public void delegateFocus(MouseEvent e) + { + super.delegateFocus(e); + } + } + + /** + * Constructs a new instance of MetalComboBoxUI. + */ + public MetalComboBoxUI() + { + super(); + } + + /** + * Returns an instance of MetalComboBoxUI. + * + * @param component the component for which we return an UI instance + * + * @return an instance of MetalComboBoxUI + */ + public static ComponentUI createUI(JComponent component) + { + return new MetalComboBoxUI(); + } + + /** + * Creates an editor for the combo box. + * + * @return An editor. + */ + protected ComboBoxEditor createEditor() + { + return new MetalComboBoxEditor.UIResource(); + } + + /** + * Creates a popup for the combo box. + * + * @return A popup. + */ + protected ComboPopup createPopup() + { + return super.createPopup(); + } + + /** + * Creates a new button for use in rendering the JComboBox. + * + * @return A button. + */ + protected JButton createArrowButton() + { + JButton button = new MetalComboBoxButton(comboBox, new MetalComboBoxIcon(), + currentValuePane, listBox); + button.setMargin(new Insets(0, 1, 1, 3)); + return button; + } + + /** + * Creates a new property change listener. + * + * @return A new property change listener. + */ + public PropertyChangeListener createPropertyChangeListener() + { + return new MetalPropertyChangeListener(); + } + + public void paint(Graphics g, JComponent c) + { + // do nothing, the button and text field are painted elsewhere + } + + /** + * Updates the button and text field to reflect a change in the 'editable' + * property. + * + * @param e the event. + * + * @deprecated 1.4 + */ + protected void editablePropertyChanged(PropertyChangeEvent e) + { + if (arrowButton instanceof MetalComboBoxButton) + { + MetalComboBoxButton b = (MetalComboBoxButton) arrowButton; + b.setIconOnly(comboBox.isEditable()); + b.setFocusable(!comboBox.isEditable() && comboBox.isEnabled()); + comboBox.repaint(); + } + } + + /** + * Creates a new layout manager for the UI delegate. + * + * @return A new layout manager. + */ + protected LayoutManager createLayoutManager() + { + return new MetalComboBoxLayoutManager(); + } + + /** + * Not used in Classpath. + * + * @deprecated 1.4 + */ + protected void removeListeners() + { + // no longer used in JDK 1.4 + } + + /** + * Returns the minimum size for the combo. + * + * @param c the component + * + * @return The minimum size for the combo box. + */ + public Dimension getMinimumSize(JComponent c) + { + if (!isMinimumSizeDirty) + return new Dimension(cachedMinimumSize); + + Dimension d; + if (!comboBox.isEditable() && arrowButton != null + && arrowButton instanceof MetalComboBoxButton) + { + MetalComboBoxButton b = (MetalComboBoxButton) arrowButton; + d = getDisplaySize(); + Insets arrowInsets = b.getInsets(); + Insets comboInsets = comboBox.getInsets(); + Icon icon = b.getComboIcon(); + d.width += comboInsets.left + comboInsets.right; + d.width += arrowInsets.left + arrowInsets.right; + d.width += arrowInsets.right + icon.getIconWidth(); + d.height += comboInsets.top + comboInsets.bottom; + d.height += arrowInsets.top + arrowInsets.bottom; + } + else if (comboBox.isEditable() && arrowButton != null && editor != null) + { + d = super.getMinimumSize(c); + Insets arrowMargin = arrowButton.getMargin(); + d.height += arrowMargin.top + arrowMargin.bottom; + d.width += arrowMargin.left + arrowMargin.right; + } + else + { + d = super.getMinimumSize(c); + } + cachedMinimumSize.setSize(d.width, d.height); + isMinimumSizeDirty = false; + return new Dimension(cachedMinimumSize); + } + + /** + * Configures the editor for this combo box. + */ + public void configureEditor() + { + super.configureEditor(); + if (popupKeyListener != null) + editor.removeKeyListener(popupKeyListener); + if (focusListener != null) + editor.addFocusListener(focusListener); + } + + /** + * Unconfigures the editor for this combo box. + */ + public void unconfigureEditor() + { + super.unconfigureEditor(); + if (focusListener != null) + editor.removeFocusListener(focusListener); + } + + /** + * Lays out the ComboBox + */ + public void layoutComboBox(Container parent, + MetalComboBoxUI.MetalComboBoxLayoutManager manager) + { + if (comboBox.isEditable()) + manager.superLayout(parent); + else if (arrowButton != null) + { + Insets comboInsets = comboBox.getInsets(); + int width = comboBox.getWidth(); + int height = comboBox.getHeight(); + arrowButton.setBounds(comboInsets.left, comboInsets.top, + width - (comboInsets.left + comboInsets.right), + height - (comboInsets.top + comboInsets.bottom)); + } + } +} |