学步园

import cn.edu.ynu.sei.atm.interfaceDef.IVerification;
import com.swtdesigner.SWTResourceManager;
import java.rmi.Naming;
import java.rmi.RemoteException;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.MouseAdapter;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.swt.widgets.Text;

/**
 * 密码输入面板
 * @author 88250
 */
public class PwdInputComposite extends Composite
{
    // ----- 密码键盘按钮 ----- //
    private Label l4;
    private Label l1;
    private Label l2;
    private Label l3;
    private Label l9;
    private Label l7;
    private Label l0;
    private Label l6;
    private Label l5;
    private Label l8;
    // ---------------------- //
    
    /**
     * 确定按钮标签
     */
    private Label confirmLbl;

    /**
     * 清除按钮标签
     */
    private Label clearLbl;

    /**
     * 密码输入框
     */
    private Text pwdText;

    /**
     * 验证身份接口实例
     */
    private IVerification verification = null;

    /**
     * 父窗口容器
     */
    private Composite parent = null;
    
    /**
     * 创建密码输入面板容器
     * @param parent 父窗口容器
     */
    public PwdInputComposite(Composite parent)
    {
    super(parent, SWT.NONE);
    this.parent = parent;
    // 取得远程服务对象
    try
    {
        verification = (IVerification) Naming.lookup(LoginInterface.serviceAddr + "Verification");
    }
    catch (RemoteException re)
    {
        re.printStackTrace();
        MessageBox exitDlg = new MessageBox(parent.getShell());
        exitDlg.setText("网络连接出现问题....");
        exitDlg.setMessage("不能连接到服务器！");
        exitDlg.open();
        System.exit(0);
    }
    catch (Exception e)
    {
        e.printStackTrace();
    }
    createContents();
    }

    /**
     * 创建密码输入面板内含控件
     */
    private void createContents()
    {
    createPwdButtons();
    pwdText = new Text(this, SWT.BORDER);
    pwdText.addModifyListener(new ModifyListener()
    {
        public void modifyText(ModifyEvent arg0)
        {
        if (pwdText.getCharCount() != 0)
        {// 设置“清除”按钮可用
            clearLbl.setBackgroundImage(SWTResourceManager.getImage(
                PwdInputComposite.class, "loginImages/clear.JPG"));
            clearLbl.setEnabled(true);
        }
        else
        {// 设置“清除”按钮不可用
            clearLbl.setBackgroundImage(SWTResourceManager.getImage(
                PwdInputComposite.class,
                "loginImages/clearDisable.JPG"));
            clearLbl.setEnabled(false);
        }

        try
        {
            if (pwdText.getCharCount() == verification.getPwdLength())
            {// 设置“确定”按钮可用
            confirmLbl.setBackgroundImage(SWTResourceManager
                .getImage(PwdInputComposite.class,
                    "loginImages/confirm.JPG"));
            confirmLbl.setEnabled(true);
            }
            else
            {// 设置“确定”按钮不可用
            confirmLbl.setBackgroundImage(SWTResourceManager
                .getImage(PwdInputComposite.class,
                    "loginImages/confirmDisable.JPG"));
            confirmLbl.setEnabled(false);
            }
        }
        catch (RemoteException re)
        {
            MessageBox exitDlg = new MessageBox(parent.getShell());
            exitDlg.setText("网络连接出现问题....");
            exitDlg.setMessage("不能连接到服务器，系统将退出！");
            exitDlg.open();
            System.exit(0);
            re.printStackTrace();
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        }
    });
    pwdText.setBounds(6, 4, 109, 25);

    // 获取限定的密码长度
    try
    {
        pwdText.setTextLimit(verification.getPwdLength());
    }
    catch (RemoteException re)
    {
        re.printStackTrace();
    }
    catch (Exception e)
    {
        e.printStackTrace();
    }

    pwdText.setEditable(false);

    pwdText.setEchoChar('*');

    clearLbl = new Label(this, SWT.BORDER);
    clearLbl.addMouseListener(new MouseAdapter()
    {
        public void mouseDown(MouseEvent e)
        {
        pwdText.setText("");
        }
    });
    clearLbl.setBackgroundImage(SWTResourceManager.getImage(
        PwdInputComposite.class, "loginImages/clearDisable.JPG"));
    clearLbl.setBounds(44, 149, 33, 33);

    confirmLbl = new Label(this, SWT.BORDER);
    confirmLbl.setBackgroundImage(SWTResourceManager.getImage(
        PwdInputComposite.class, "loginImages/confirmDisable.JPG"));
    confirmLbl.setBounds(82, 149, 33, 33);
    confirmLbl.setEnabled(false);
    }

    /**
     * 创建密码按钮
     */
    private void createPwdButtons()
    {
    l8 = new Label(this, SWT.BORDER);
    l8.addMouseListener(new MouseAdapter()
    {
        public void mouseDown(MouseEvent e)
        {
        pwdText.append("8");
        }
    });
    l8.setBackgroundImage(SWTResourceManager.getImage(
        PwdInputComposite.class, "loginImages/8.JPG"));
    l8.setBounds(82, 111, 32, 32);

    l5 = new Label(this, SWT.BORDER);
    l5.addMouseListener(new MouseAdapter()
    {
        public void mouseDown(MouseEvent e)
        {
        pwdText.append("5");
        }
    });
    l5.setBackgroundImage(SWTResourceManager.getImage(
        PwdInputComposite.class, "loginImages/5.JPG"));
    l5.setBounds(82, 73, 32, 32);

    l6 = new Label(this, SWT.BORDER);
    l6.addMouseListener(new MouseAdapter()
    {
        public void mouseDown(MouseEvent e)
        {
        pwdText.append("6");
        }
    });
    l6.setBackgroundImage(SWTResourceManager.getImage(
        PwdInputComposite.class, "loginImages/6.JPG"));
    l6.setBounds(6, 111, 32, 32);

    l0 = new Label(this, SWT.SHADOW_IN | SWT.BORDER);
    l0.addMouseListener(new MouseAdapter()
    {
        public void mouseDown(MouseEvent e)
        {
        pwdText.append("0");
        }
    });
    l0.setBackgroundImage(SWTResourceManager.getImage(
        PwdInputComposite.class, "loginImages/0.JPG"));
    l0.setBounds(6, 35, 32, 32);

    l7 = new Label(this, SWT.BORDER);
    l7.addMouseListener(new MouseAdapter()
    {
        public void mouseDown(MouseEvent e)
        {
        pwdText.append("7");
        }
    });
    l7.setBackgroundImage(SWTResourceManager.getImage(
        PwdInputComposite.class, "loginImages/7.JPG"));
    l7.setBounds(44, 111, 32, 32);

    l9 = new Label(this, SWT.BORDER);
    l9.addMouseListener(new MouseAdapter()
    {
        public void mouseDown(MouseEvent e)
        {
        pwdText.append("9");
        }
    });
    l9.setBackgroundImage(SWTResourceManager.getImage(
        PwdInputComposite.class, "loginImages/9.JPG"));
    l9.setBounds(6, 149, 32, 32);

    l3 = new Label(this, SWT.BORDER);
    l3.addMouseListener(new MouseAdapter()
    {
        public void mouseDown(MouseEvent e)
        {
        pwdText.append("3");
        }
    });
    l3.setBackgroundImage(SWTResourceManager.getImage(
        PwdInputComposite.class, "loginImages/3.JPG"));
    l3.setBounds(6, 73, 32, 32);

    l2 = new Label(this, SWT.BORDER);
    l2.addMouseListener(new MouseAdapter()
    {
        public void mouseDown(MouseEvent e)
        {
        pwdText.append("2");
        }
    });
    l2.setBackgroundImage(SWTResourceManager.getImage(
        PwdInputComposite.class, "loginImages/2.JPG"));
    l2.setBounds(82, 35, 32, 32);

    l1 = new Label(this, SWT.BORDER);
    l1.addMouseListener(new MouseAdapter()
    {
        public void mouseDown(MouseEvent e)
        {
        pwdText.append("1");
        }
    });
    l1.setBackgroundImage(SWTResourceManager.getImage(
        PwdInputComposite.class, "loginImages/1.JPG"));
    l1.setBounds(44, 35, 32, 32);

    l4 = new Label(this, SWT.BORDER);
    l4.addMouseListener(new MouseAdapter()
    {
        public void mouseDown(MouseEvent e)
        {
        pwdText.append("4");
        }
    });
    l4.setBackgroundImage(SWTResourceManager.getImage(
        PwdInputComposite.class, "loginImages/4.JPG"));
    l4.setBounds(44, 73, 32, 32);
    }

    /**
     * 设置密码输入面板容器内含控件的可见性
     * @param b 可见性
     */
    public void setContentsVisible(boolean b)
    {
    l0.setVisible(b);
    l1.setVisible(b);
    l2.setVisible(b);
    l3.setVisible(b);
    l4.setVisible(b);
    l5.setVisible(b);
    l6.setVisible(b);
    l7.setVisible(b);
    l8.setVisible(b);
    l9.setVisible(b);
    confirmLbl.setVisible(b);
    clearLbl.setVisible(b);
    pwdText.setVisible(b);
    }

    /**
     * 清空密码输入框
     */
    public void clearPwdText()
    {
    pwdText.setText("");
    }

    /**
     * 返回密码
     * @return 密码 
     */
    public String getPwdText()
    {
    return pwdText.getText();
    }

    /**
     * 返回确定按钮
     * @return 确定按钮
     */
    public Label getConfirmLbl()
    {
    return confirmLbl;
    }

    @Override
    public void dispose()
    {
    super.dispose();
    }

    @Override
    protected void checkSubclass()
    {
    // Disable the check that prevents subclassing of SWT components
    }
}