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+/* 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);
+ }
+ }
+}