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Diffstat (limited to 'libjava/classpath/javax/swing/plaf/basic/BasicButtonListener.java')
-rw-r--r-- | libjava/classpath/javax/swing/plaf/basic/BasicButtonListener.java | 370 |
1 files changed, 370 insertions, 0 deletions
diff --git a/libjava/classpath/javax/swing/plaf/basic/BasicButtonListener.java b/libjava/classpath/javax/swing/plaf/basic/BasicButtonListener.java new file mode 100644 index 000000000..22033b6ad --- /dev/null +++ b/libjava/classpath/javax/swing/plaf/basic/BasicButtonListener.java @@ -0,0 +1,370 @@ +/* BasicButtonListener.java -- + Copyright (C) 2004, 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.basic; + +import gnu.classpath.SystemProperties; + +import java.awt.event.ActionEvent; +import java.awt.event.FocusEvent; +import java.awt.event.FocusListener; +import java.awt.event.MouseEvent; +import java.awt.event.MouseListener; +import java.awt.event.MouseMotionListener; +import java.awt.font.FontRenderContext; +import java.awt.font.TextLayout; +import java.awt.geom.AffineTransform; +import java.beans.PropertyChangeEvent; +import java.beans.PropertyChangeListener; + +import javax.swing.AbstractAction; +import javax.swing.AbstractButton; +import javax.swing.Action; +import javax.swing.ActionMap; +import javax.swing.ButtonModel; +import javax.swing.InputMap; +import javax.swing.JComponent; +import javax.swing.SwingUtilities; +import javax.swing.UIManager; +import javax.swing.event.ChangeEvent; +import javax.swing.event.ChangeListener; +import javax.swing.plaf.ActionMapUIResource; +import javax.swing.plaf.ButtonUI; + +public class BasicButtonListener + implements MouseListener, MouseMotionListener, FocusListener, ChangeListener, + PropertyChangeListener +{ + /** + * Implements the keyboard action for Swing buttons. + */ + private class ButtonAction + extends AbstractAction + { + /** + * The key for pressed action. + */ + static final String PRESSED = "pressed"; + + /** + * The key for released action. + */ + static final String RELEASED = "released"; + + /** + * Performs the action. + */ + public void actionPerformed(ActionEvent event) + { + Object cmd = getValue("__command__"); + AbstractButton b = (AbstractButton) event.getSource(); + ButtonModel m = b.getModel(); + if (PRESSED.equals(cmd)) + { + m.setArmed(true); + m.setPressed(true); + if (! b.isFocusOwner()) + b.requestFocus(); + } + else if (RELEASED.equals(cmd)) + { + m.setPressed(false); + m.setArmed(false); + } + } + + /** + * Indicates if this action is enabled. + * + * @param source the source of the action + * + * @return <code>true</code> when enabled, <code>false</code> otherwise + */ + public boolean isEnabled(Object source) + { + boolean enabled = true; + if (source instanceof AbstractButton) + { + AbstractButton b = (AbstractButton) source; + enabled = b.isEnabled(); + } + return enabled; + } + } + + public BasicButtonListener(AbstractButton b) + { + // Do nothing here. + } + + public void propertyChange(PropertyChangeEvent e) + { + // Store the TextLayout for this in a client property for speed-up + // painting of the label. + String property = e.getPropertyName(); + AbstractButton b = (AbstractButton) e.getSource(); + if ((property.equals(AbstractButton.TEXT_CHANGED_PROPERTY) + || property.equals("font")) + && SystemProperties.getProperty("gnu.javax.swing.noGraphics2D") + == null) + { + String text = b.getText(); + if (text == null) + text = ""; + FontRenderContext frc = new FontRenderContext(new AffineTransform(), + false, false); + TextLayout layout = new TextLayout(text, b.getFont(), frc); + b.putClientProperty(BasicGraphicsUtils.CACHED_TEXT_LAYOUT, layout); + + // Update HTML renderer. + BasicHTML.updateRenderer(b, b.getText()); + } + else if (property.equals(AbstractButton.CONTENT_AREA_FILLED_CHANGED_PROPERTY)) + { + checkOpacity(b); + } + } + + /** + * Checks the <code>contentAreaFilled</code> property and updates the + * opaque property of the button. + * + * @param b the button to check + */ + protected void checkOpacity(AbstractButton b) + { + b.setOpaque(b.isContentAreaFilled()); + } + + public void focusGained(FocusEvent e) + { + if (e.getSource() instanceof AbstractButton) + { + AbstractButton button = (AbstractButton) e.getSource(); + if (button.isFocusPainted()) + button.repaint(); + } + } + + public void focusLost(FocusEvent e) + { + if (e.getSource() instanceof AbstractButton) + { + AbstractButton button = (AbstractButton) e.getSource(); + if (button.isFocusPainted()) + button.repaint(); + } + } + + public void installKeyboardActions(JComponent c) + { + ButtonUI ui = ((AbstractButton) c).getUI(); + if (ui instanceof BasicButtonUI) + { + // Install InputMap. + BasicButtonUI basicUI = (BasicButtonUI) ui; + String prefix = basicUI.getPropertyPrefix(); + InputMap focusInputMap = + (InputMap) UIManager.get(prefix + "focusInputMap"); + SwingUtilities.replaceUIInputMap(c, JComponent.WHEN_FOCUSED, + focusInputMap); + + ActionMap am = (ActionMap) UIManager.get(prefix + "actionMap"); + if (am == null) + { + am = createDefaultActionMap(); + UIManager.put(prefix + "actionMap", am); + } + SwingUtilities.replaceUIActionMap(c, am); + } + + c.getActionMap().put("pressed", + new AbstractAction() + { + public void actionPerformed(ActionEvent e) + { + AbstractButton button = (AbstractButton) e.getSource(); + ButtonModel model = button.getModel(); + // It is important that these transitions happen in this order. + model.setArmed(true); + model.setPressed(true); + } + }); + + c.getActionMap().put("released", + new AbstractAction() + { + public void actionPerformed(ActionEvent e) + { + AbstractButton button = (AbstractButton) e.getSource(); + ButtonModel model = button.getModel(); + // It is important that these transitions happen in this order. + model.setPressed(false); + model.setArmed(false); + } + }); + } + + /** + * Creates and returns the default action map for Swing buttons. + * + * @return the default action map for Swing buttons + */ + private ActionMap createDefaultActionMap() + { + Action action = new ButtonAction(); + ActionMapUIResource am = new ActionMapUIResource(); + am.put(ButtonAction.PRESSED, action); + am.put(ButtonAction.RELEASED, action); + return am; + } + + public void uninstallKeyboardActions(JComponent c) + { + SwingUtilities.replaceUIActionMap(c, null); + SwingUtilities.replaceUIInputMap(c, JComponent.WHEN_FOCUSED, null); + } + + public void stateChanged(ChangeEvent e) + { + // Need to repaint when the button state changes. + ((AbstractButton) e.getSource()).repaint(); + } + + public void mouseMoved(MouseEvent e) + { + // Nothing to do here. + } + + public void mouseDragged(MouseEvent e) + { + // Nothing to do here. + } + + public void mouseClicked(MouseEvent e) + { + // Nothing to do here. + } + + /** + * Accept a mouse press event and arm the button. + * + * @param e The mouse press event to accept + */ + public void mousePressed(MouseEvent e) + { + if (e.getSource() instanceof AbstractButton) + { + AbstractButton button = (AbstractButton) e.getSource(); + ButtonModel model = button.getModel(); + if (SwingUtilities.isLeftMouseButton(e)) + { + // It is important that these transitions happen in this order. + model.setArmed(true); + model.setPressed(true); + + if (! button.isFocusOwner() && button.isRequestFocusEnabled()) + button.requestFocus(); + } + } + } + + /** + * Accept a mouse release event and set the button's + * "pressed" property to <code>true</code>, if the model + * is armed. If the model is not armed, ignore the event. + * + * @param e The mouse release event to accept + */ + public void mouseReleased(MouseEvent e) + { + if (e.getSource() instanceof AbstractButton) + { + AbstractButton button = (AbstractButton) e.getSource(); + ButtonModel model = button.getModel(); + if (e.getButton() == MouseEvent.BUTTON1) + { + // It is important that these transitions happen in this order. + model.setPressed(false); + model.setArmed(false); + } + } + } + + /** + * Accept a mouse enter event and set the button's "rollover" property to + * <code>true</code>, if the button's "rolloverEnabled" property is + * <code>true</code>. If the button is currently armed and the mouse + * button is not held down, this enter event will also disarm the model. + * + * @param e The mouse enter event to accept + */ + public void mouseEntered(MouseEvent e) + { + if (e.getSource() instanceof AbstractButton) + { + AbstractButton button = (AbstractButton) e.getSource(); + ButtonModel model = button.getModel(); + if (button.isRolloverEnabled() + && ! SwingUtilities.isLeftMouseButton(e)) + model.setRollover(true); + + if (model.isPressed()) + model.setArmed(true); + } + } + + /** + * Accept a mouse exit event and set the button's model's "rollover" + * property to <code>false</code>, if it's "rolloverEnabled" property is + * <code>true</code>. Also disarm the button. + * + * @param e The mouse exit event to accept + */ + public void mouseExited(MouseEvent e) + { + if (e.getSource() instanceof AbstractButton) + { + AbstractButton button = (AbstractButton) e.getSource(); + ButtonModel model = button.getModel(); + if (button.isRolloverEnabled()) + model.setRollover(false); + model.setArmed(false); + } + } +} |