logpanel.java

来自「含有uml的多个实例及实例的java源码。」· Java 代码 · 共 89 行

/*
 * ATM Example system - file LogPanel.java  
 *
 * copyright (c) 2001 - Russell C. Bjork
 *
 */
 
package simulation;

import java.awt.*;
import java.awt.event.*;

/** The GUI panel that displays the ATM's internal log
 */
class LogPanel extends Panel
{
    /** Constructor
     *
     *  @param gui the the overall GUI
     */
     
    LogPanel(final GUI gui)
    {
        GridBagLayout logLayout = new GridBagLayout();
        setLayout(logLayout);
        setFont(new Font("Monospaced", Font.PLAIN, 14));
        
        Label logPanelLabel = new Label("Log", Label.CENTER);
        add(logPanelLabel);
        GridBagConstraints constraints = 
            GUI.makeConstraints(0, 0, 1, 1, GridBagConstraints.NONE);
        constraints.weighty = 0;
        logLayout.setConstraints(logPanelLabel, constraints); 
            
        logPrintArea = new TextArea();
        logPrintArea.setBackground(Color.white);
        logPrintArea.setForeground(Color.black);
        logPrintArea.setFont(new Font("Monospaced", Font.PLAIN, 12));
        logPrintArea.setEditable(false);        

        add(logPrintArea);
        constraints = GUI.makeConstraints(1, 0, 1, 1, GridBagConstraints.BOTH);
        constraints.weighty = 1;
        logLayout.setConstraints(logPrintArea, constraints);
        
        Panel logButtonPanel = new Panel();
        logButtonPanel.setLayout(new FlowLayout());
        
        Button clearLogButton = new Button("Clear Log");
        clearLogButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e)
            {
                logPrintArea.setText("");
            }
        });
        logButtonPanel.add(clearLogButton);
        
        Button dismissLogButton = new Button(" Hide Log ");
        dismissLogButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e)
            {
                gui.showCard("ATM");
            }
        });
        
        logButtonPanel.add(dismissLogButton);
        add(logButtonPanel);
        constraints = GUI.makeConstraints(2, 0, 1, 1, GridBagConstraints.NONE);
        constraints.weighty = 0;
        logLayout.setConstraints(logButtonPanel, constraints);
    }
    
    /** Add text to the log
     *
     *  @param text the text to be printed
     */
    void println(String text)
    {
        logPrintArea.append(text + "\n");
    }
    
    /** Area into which the log is to be printed
     */
    private TextArea logPrintArea;
}