| /* 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); |
| } |
| } |
| } |