| /* SwingMenuPeer.java -- A Swing based peer for AWT menus |
| Copyright (C) 2006 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 gnu.java.awt.peer.swing; |
| |
| import java.awt.Font; |
| import java.awt.Menu; |
| import java.awt.MenuItem; |
| import java.awt.Point; |
| import java.awt.event.MouseEvent; |
| import java.awt.peer.MenuPeer; |
| |
| import javax.swing.JMenu; |
| |
| /** |
| * A Swing based peer for the AWT menu. |
| * |
| * @author Roman Kennke (kennke@aicas.com) |
| */ |
| public class SwingMenuPeer |
| implements MenuPeer |
| { |
| |
| /** |
| * The AWT menu. |
| */ |
| Menu awtMenu; |
| |
| /** |
| * The Swing menu. |
| */ |
| SwingMenu menu; |
| |
| /** |
| * A specialized JMenu that can be used as 'backend' for an AWT menu. |
| * |
| * @author Roman Kennke (kennke@aicas.com) |
| */ |
| private class SwingMenu |
| extends JMenu |
| { |
| |
| /** |
| * Unconditionally returns <code>true</code>, since we assume that when the |
| * menu has a peer, it must be showing. |
| * |
| * @return <code>true</code> |
| */ |
| public boolean isShowing() |
| { |
| // FIXME: This might be wrong. Maybe find a better way to do that. |
| return true; |
| } |
| |
| /** |
| * Overridden so that we can provide a location even without a real peer |
| * attached. |
| * |
| * @return the screen location of this menu |
| */ |
| public Point getLocationOnScreen() |
| { |
| Point parentLoc = getParent().getLocationOnScreen(); |
| parentLoc.x += getX(); |
| parentLoc.y += getY(); |
| return parentLoc; |
| } |
| |
| /** |
| * Handles mouse events by forwarding them to |
| * <code>processMouseEvent()</code>. |
| * |
| * @param ev the mouse event |
| */ |
| public void handleMouseEvent(MouseEvent ev) |
| { |
| ev.setSource(this); |
| processMouseEvent(ev); |
| } |
| |
| /** |
| * Handles mouse events by forwarding them to |
| * <code>processMouseMotionEvent()</code>. |
| * |
| * @param ev the mouse event |
| */ |
| public void handleMouseMotionEvent(MouseEvent ev) |
| { |
| ev.setSource(this); |
| processMouseMotionEvent(ev); |
| } |
| } |
| |
| /** |
| * Creates a new <code>SwingMenuPeer</code> instance. |
| * |
| * @param awtMenu the AWT menu |
| */ |
| public SwingMenuPeer(Menu awtMenu) |
| { |
| this.awtMenu = awtMenu; |
| menu = new SwingMenu(); |
| menu.setDoubleBuffered(false); |
| menu.setText(awtMenu.getLabel()); |
| for (int i = 0; i < awtMenu.getItemCount(); i++) |
| { |
| MenuItem item = awtMenu.getItem(i); |
| item.addNotify(); |
| SwingMenuItemPeer peer = (SwingMenuItemPeer) item.getPeer(); |
| menu.add(peer.menuItem); |
| } |
| } |
| |
| /** |
| * Adds a menu item to this menu. |
| * |
| * @param item the menu item to add |
| */ |
| public void addItem(MenuItem item) |
| { |
| SwingMenuItemPeer menuItemPeer = (SwingMenuItemPeer) item.getPeer(); |
| menu.add(menuItemPeer.menuItem); |
| } |
| |
| /** |
| * Adds a separator to the menu. |
| */ |
| public void addSeparator() |
| { |
| menu.addSeparator(); |
| } |
| |
| /** |
| * Removes a menu item from the menu. |
| * |
| * @param index the index of the menu item to remove |
| */ |
| public void delItem(int index) |
| { |
| menu.remove(index); |
| } |
| |
| /** |
| * Disables the menu. |
| */ |
| public void disable() |
| { |
| menu.setEnabled(false); |
| } |
| |
| /** |
| * Enables the menu. |
| */ |
| public void enable() |
| { |
| menu.setEnabled(true); |
| } |
| |
| /** |
| * Sets the enabled state of the menu to <code>enabled</code>. |
| * |
| * @param enabled if the menu should be enabled or not |
| */ |
| public void setEnabled(boolean enabled) |
| { |
| menu.setEnabled(enabled); |
| } |
| |
| /** |
| * Sets the label of the menu. |
| * |
| * @param text the label to set |
| */ |
| public void setLabel(String text) |
| { |
| menu.setText(text); |
| } |
| |
| /** |
| * Releases any reference to the AWT and Swing menu instances. |
| */ |
| public void dispose() |
| { |
| menu = null; |
| awtMenu = null; |
| } |
| |
| /** |
| * Sets the font for the menu. |
| * |
| * @param font the font to set |
| */ |
| public void setFont(Font font) |
| { |
| menu.setFont(font); |
| } |
| |
| /** |
| * Handles mouse events by forwarding them to the Swing menu. |
| * |
| * @param ev the mouse event |
| */ |
| public void handleMouseEvent(MouseEvent ev) |
| { |
| menu.handleMouseEvent(ev); |
| } |
| |
| /** |
| * Handles mouse motion events by forwarding them to the Swing menu. |
| * |
| * @param ev the mouse event |
| */ |
| public void handleMouseMotionEvent(MouseEvent ev) |
| { |
| menu.handleMouseMotionEvent(ev); |
| } |
| |
| /** |
| * Returns the X coordinate of the upper left corner of the menu. This is |
| * used internally by the SwingMenuBarPeer. |
| * |
| * @return the X coordinate of the upper left corner of the menu |
| */ |
| int getX() |
| { |
| return menu.getX(); |
| } |
| |
| /** |
| * Returns the width of the menu. This is used internally by the |
| * SwingMenuBarPeer. |
| * |
| * @return the X coordinate of the upper left corner of the menu |
| */ |
| int getWidth() |
| { |
| return menu.getWidth(); |
| } |
| |
| /** |
| * Returns the Y coordinate of the upper left corner of the menu. This is |
| * used internally by the SwingMenuBarPeer. |
| * |
| * @return the X coordinate of the upper left corner of the menu |
| */ |
| public int getY() |
| { |
| return menu.getY(); |
| } |
| } |