在RCP中实现系统托盘功能

/**
*SystemTrayMaster.java
*/
package com.mi.pwdgate.util;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Tray;
import org.eclipse.swt.widgets.TrayItem;
import org.eclipse.ui.PlatformUI;

/**
*@authormoneyice2006-5-9
*/
publicclass SystemTrayMaster implements SelectionListener,Listener{
privatefinalclass RestoreWindowListener extends SelectionAdapter{
public void widgetSelected(SelectionEvente){
restoreWindow();
}
}

private Menumenu;

private MenuItem[]menuItems=new MenuItem[0];

private RestoreWindowListenerrestoreWindowListener;

public SystemTrayMaster(){
this .restoreWindowListener= new RestoreWindowListener();
}

//ClosestheApplication
protected void closeApplication(){
PlatformUI.getWorkbench().close();
}

//clickthetray
public void widgetSelected(SelectionEvente){
}

//doubleclickthetray
public void widgetDefaultSelected(SelectionEvente){
restoreWindow();
}

//Getssystemshell
private ShellgetShell(){
return PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell();
}

//MinimizestheWindow
public void minimizeWindow(){
getShell().setMinimized( true );
getShell().setVisible( false );
}

//Restoresthewindow
protected void restoreWindow(){
Shellshell=PlatformUI.getWorkbench().getActiveWorkbenchWindow()
.getShell();
shell.open();
shell.setMinimized( false );
shell.forceActive();
shell.forceFocus();
}

public void showMenu(){
clearItems();
MenuItemopenItem;
MenuItemcloseItem;
openItem= new MenuItem( this .menu,SWT.PUSH);
closeItem= new MenuItem( this .menu,SWT.NONE);
closeItem.setText("Close");
closeItem.addSelectionListener( new SelectionAdapter(){
public void widgetSelected(SelectionEvente){
closeApplication();
}
});
this .menuItems= new MenuItem[]{openItem,closeItem};

openItem.setText("OpenPasswordGate");
openItem.addSelectionListener( this .restoreWindowListener);
this .menu.setVisible( true );
}

private void clearItems(){
for ( int i=0;i< this .menuItems.length;i++){
MenuItemitem= this .menuItems[i];
item.removeSelectionListener( this .restoreWindowListener);
this .menuItems[i].dispose();
}
}

public void handleEvent(Eventevent){
showMenu();
}

public void createSystemTray(){
//Getssystemtray
Traytray=Display.getDefault().getSystemTray();
//Createstrayitem
TrayItemitem= new TrayItem(tray,SWT.NONE);
item.setText("PasswordGate");
item.setToolTipText("PasswordGate");
//Setsimagefortray
Imageimage=ImageShop.get("default");
item.setImage(image);

item.addSelectionListener( this );
item.addListener(SWT.MenuDetect, this );

menu= new Menu(getShell(),SWT.POP_UP);
}
}