TextArea Views 3 : TextArea « Swing JFC « Java

TextArea Views 3

TextArea Views 3
Core SWING Advanced Programming 
By Kim Topley
ISBN: 0 13 083292 8       
Publisher: Prentice Hall  

import java.io.PrintStream;

import javax.swing.JFrame;
import javax.swing.JTextArea;
import javax.swing.UIManager;
import javax.swing.text.BadLocationException;
import javax.swing.text.Document;
import javax.swing.text.JTextComponent;
import javax.swing.text.View;

public class TextAreaViews {
  public static void main(String[] args) {
    try {
    } catch (Exception evt) {}
    JFrame f = new JFrame("Text Area Views");
    JTextArea ta = new JTextArea(5, 32);
        .setText("That's one small step for man...\nOne giant leap for mankind.");

    f.setSize(200, 100);

    ViewDisplayer.displayViews(ta, System.out);

    try {
      ViewDisplayer.displayViews(ta, System.out);
    } catch (InterruptedException e) {


class ViewDisplayer {
  public static void displayViews(JTextComponent comp, PrintStream out) {
    View rootView = comp.getUI().getRootView(comp);
    displayView(rootView, 0, comp.getDocument(), out);

  public static void displayView(View view, int indent, Document doc,
      PrintStream out) {
    String name = view.getClass().getName();
    for (int i = 0; i < indent; i++) {

    int start = view.getStartOffset();
    int end = view.getEndOffset();
    out.println(name + "; offsets [" + start + ", " + end + "]");
    int viewCount = view.getViewCount();
    if (viewCount == 0) {
      int length = Math.min(32, end - start);
      try {
        String txt = doc.getText(start, length);
        for (int i = 0; i < indent + 1; i++) {
        out.println("[" + txt + "]");
      } catch (BadLocationException e) {
    } else {
      for (int i = 0; i < viewCount; i++) {
        displayView(view.getView(i), indent + 1, doc, out);

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10.Drag and drop: TextArea 2Drag and drop: TextArea 2
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12.TextArea Background ImageTextArea Background Image
13.Cut Paste SampleCut Paste Sample
14.TextArea SampleTextArea Sample
15.TextArea ExampleTextArea Example
16.Wrap textareaWrap textarea
17.Replace text in text areaReplace text in text area
18.TextField ExampleTextField Example
19.TextArea Elements 2TextArea Elements 2
20.TextArea ElementsTextArea Elements
21.TextArea Views 2TextArea Views 2
22.TextArea with UnicodeTextArea with Unicode
23.Internationalized Graphical User Interfaces: unicode cut and pasteInternationalized Graphical User Interfaces: unicode cut and paste
24.Text Component Demo 2Text Component Demo 2
25.Text Component DemoText Component Demo
26.Text Input DemoText Input Demo
27.Text Components Sampler DemoText Components Sampler Demo
28.TextArea Share ModelTextArea Share Model
29.Set the start of the selection; ignored if new start is < end
30.Set the end of the selection; ignored if new end is > start
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32.Simple Editor DemoSimple Editor Demo
33.Setting the Tab Size of a JTextArea Component
34.Moving the Focus with the TAB Key in a JTextArea Component
35.Enabling Word-Wrapping and Line-Wrapping in a JTextArea Component
36.Append some text to JTextArea
37.Replace the first 3 characters with some text
38.Enable word-wrapping
39.Enumerate the content elements with a ElementIterator
40.Highlight of discontinous string
41.Copy selected text from one text area to another