📄 textfieldsframe.html

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<html><head><title>Display page for TextFields at www.BruceEckel.com</title></head>
<FONT FACE="Verdana,Tahoma,Arial,Helvetica,Sans" SIZE="-1">
<FONT FACE="Verdana,Tahoma,Arial,Helvetica,Sans"><H2>TextFields.java</H2><hr></FONT>
<!--"CONVERTED_APPLET"-->
<!-- HTML CONVERTER -->
<OBJECT 
    classid = "clsid:CAFEEFAC-0014-0001-0001-ABCDEFFEDCBA"
    codebase = "http://java.sun.com/products/plugin/autodl/jinstall-1_4_1_01-windows-i586.cab#Version=1,4,1,1"
    WIDTH = "375" HEIGHT = "125" ALIGN = "baseline" >
    <PARAM NAME = CODE VALUE = "TextFields.class" >
    <PARAM NAME = "type" VALUE = "application/x-java-applet;jpi-version=1.4.1_01">
    <PARAM NAME = "scriptable" VALUE = "false">

    <COMMENT>
	<EMBED 
            type = "application/x-java-applet;jpi-version=1.4.1_01" 
            CODE = "TextFields.class"
            WIDTH = "375"
            HEIGHT = "125"
            ALIGN = "baseline"  
	    scriptable = false 
	    pluginspage = "http://java.sun.com/products/plugin/index.html#download">
	    <NOEMBED>
            
            </NOEMBED>
	</EMBED>
    </COMMENT>
</OBJECT>

<!--
<APPLET CODE = "TextFields.class" WIDTH = "375" HEIGHT = "125" ALIGN = "baseline">


</APPLET>
-->


<!--"END_CONVERTED_APPLET"-->

<FONT SIZE="+3"><PRE><B>
//: c14:TextFields.java
// Text fields and Java events.
// &lt;applet code=TextFields width=375 height=125&gt;&lt;/applet&gt;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import java.awt.*;
import java.awt.event.*;
import com.bruceeckel.swing.*;

public class TextFields extends JApplet {
  private JButton
    b1 = new JButton("Get Text"),
    b2 = new JButton("Set Text");
  private JTextField
    t1 = new JTextField(30),
    t2 = new JTextField(30),
    t3 = new JTextField(30);
  private String s = new String();
  private UpperCaseDocument ucd = new UpperCaseDocument();
  public void init() {
    t1.setDocument(ucd);
    ucd.addDocumentListener(new T1());
    b1.addActionListener(new B1());
    b2.addActionListener(new B2());
    DocumentListener dl = new T1();
    t1.addActionListener(new T1A());
    Container cp = getContentPane();
    cp.setLayout(new FlowLayout());
    cp.add(b1);
    cp.add(b2);
    cp.add(t1);
    cp.add(t2);
    cp.add(t3);
  }
  class T1 implements DocumentListener {
    public void changedUpdate(DocumentEvent e) {}
    public void insertUpdate(DocumentEvent e) {
      t2.setText(t1.getText());
      t3.setText("Text: "+ t1.getText());
    }
    public void removeUpdate(DocumentEvent e) {
      t2.setText(t1.getText());
    }
  }
  class T1A implements ActionListener {
    private int count = 0;
    public void actionPerformed(ActionEvent e) {
      t3.setText("t1 Action Event " + count++);
    }
  }
  class B1 implements ActionListener {
    public void actionPerformed(ActionEvent e) {
      if(t1.getSelectedText() == null)
        s = t1.getText();
      else
        s = t1.getSelectedText();
      t1.setEditable(true);
    }
  }
  class B2 implements ActionListener {
    public void actionPerformed(ActionEvent e) {
      ucd.setUpperCase(false);
      t1.setText("Inserted by Button 2: " + s);
      ucd.setUpperCase(true);
      t1.setEditable(false);
    }
  }
  public static void main(String[] args) {
    Console.run(new TextFields(), 375, 125);
  }
}

class UpperCaseDocument extends PlainDocument {
  private boolean upperCase = true;
  public void setUpperCase(boolean flag) {
    upperCase = flag;
  }
  public void 
  insertString(int offset, String str, AttributeSet attSet)
  throws BadLocationException {
    if(upperCase) str = str.toUpperCase();
    super.insertString(offset, str, attSet);
  }
} ///:~

</B></PRE></FONT>
</html>
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