diff options
Diffstat (limited to 'examples/gnu/classpath/examples/swing/HtmlDemo.java')
| -rw-r--r-- | examples/gnu/classpath/examples/swing/HtmlDemo.java | 266 |
1 files changed, 70 insertions, 196 deletions
diff --git a/examples/gnu/classpath/examples/swing/HtmlDemo.java b/examples/gnu/classpath/examples/swing/HtmlDemo.java index d31d8cc9d..4cbf3ce47 100644 --- a/examples/gnu/classpath/examples/swing/HtmlDemo.java +++ b/examples/gnu/classpath/examples/swing/HtmlDemo.java @@ -40,21 +40,22 @@ package gnu.classpath.examples.swing; import java.awt.BorderLayout; import java.awt.Dimension; -import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; +import java.io.IOException; +import java.net.URL; +import javax.swing.BoxLayout; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; -import javax.swing.JTextArea; +import javax.swing.JTextField; import javax.swing.JTextPane; import javax.swing.SwingUtilities; -import javax.swing.text.AbstractDocument; -import javax.swing.text.Element; -import javax.swing.text.html.HTMLDocument; +import javax.swing.event.HyperlinkEvent; +import javax.swing.event.HyperlinkListener; /** * Parses and displays HTML content. @@ -64,49 +65,36 @@ import javax.swing.text.html.HTMLDocument; public class HtmlDemo extends JPanel { + private class LoadActionListener + implements ActionListener + { + + public void actionPerformed(ActionEvent event) + { + String urlStr = url.getText(); + try + { + html.setPage(url.getText()); + } + catch (IOException ex) + { + System.err.println("exception while loading: " + ex); + ex.printStackTrace(); + } + } + } + /** * Setting this to true causes the parsed element structure to be dumped. */ private static final boolean DEBUG = true; - JTextPane html = new JTextPane(); - - JTextArea text = new JTextArea("<html><body>\n" + /** + * The URL entry field. + */ + JTextField url = new JTextField(); - + "<h1>H1 Headline</h1>\n" - + "<h2>H2 Headline</h2>\n" - + "<h3>H3 Headline</h3>\n" - + "<h4>H4 Headline</h3>\n" - + "<h5>H5 Headline</h5>\n" - + "<h6>H6 Headline</h6>\n" - + "<h1>CSS colors via font tag</h1>\n" - + "<p>" - + "<font color=\"maroon\">maroon</font>\n" - + "<font color=\"red\">red</font>\n" - + "<font color=\"orange\">orange</font>\n" - + "<font color=\"yellow\">yellow</font>\n" - + "<font color=\"olive\">olive</font>\n" - + "<font color=\"purple\">purlpe</font>\n" - + "<font color=\"fuchsia\">fuchsia</font>\n" - + "<font color=\"white\">white</font>\n" - + "<font color=\"lime\">lime</font>\n" - + "<font color=\"green\">green</font>\n" - + "<font color=\"navy\">navy</font>\n" - + "<font color=\"blue\">blue</font>\n" - + "<font color=\"aqua\">aqua</font>\n" - + "<font color=\"teal\">teal</font>\n" - + "<font color=\"black\">black</font>\n" - + "<font color=\"silver\">silver</font>\n" - + "<font color=\"gray\">gray</font>\n" - + "</p>" - + "<h1>Some HTML formatting tags</h1>\n" - + "<p>Normal <b>Bold</b> <i>Italic</i> <b><i>Bold + Italic</i></b></p>\n" - + "<p><big>Big</big> <em>Emphasized</em> <small>Small</small>\n" - + "<strike>Strike</strike> <strong>Strong</strong> <u>Underline</u></p>\n" - + "<p>Normal vs <sup>Superscript</sup> vs <sub>Subscript</sub> text</p>\n" - + "</body></html>\n"); - - JPanel buttons; + JTextPane html = new JTextPane(); int n; @@ -116,7 +104,7 @@ public class HtmlDemo extends JPanel html.setContentType("text/html"); // not now. createContent(); } - + /** * Returns a panel with the demo content. The panel uses a BorderLayout(), and * the BorderLayout.SOUTH area is empty, to allow callers to add controls to @@ -126,158 +114,56 @@ public class HtmlDemo extends JPanel private void createContent() { setLayout(new BorderLayout()); - - JPanel center = new JPanel(); - GridLayout layout = new GridLayout(); - layout.setRows(2); - center.setLayout(layout); - center.add(new JScrollPane(text)); - center.add(new JScrollPane(html)); - - buttons = new JPanel(); - - JButton parse = new JButton("parse"); - parse.addActionListener(new ActionListener() - { - public void actionPerformed(ActionEvent event) - { - String t = text.getText(); - System.out.println("HtmlDemo.java.createContent:Parsing started"); - html.setText(t); - System.out.println("HtmlDemo.java.createContent:Parsing completed"); - if (DEBUG) - ((AbstractDocument) html.getDocument()).dump(System.out); - } - }); - - buttons.add(parse); - - JButton insertBeforeEnd = new JButton("before end"); - insertBeforeEnd.addActionListener(new ActionListener() - { - public void actionPerformed(ActionEvent event) - { - HTMLDocument doc = (HTMLDocument) html.getDocument(); - Element el = doc.getElement("insertHere"); - System.out.println("Element found:"+el); - try - { - doc.insertBeforeEnd(el,"before end "+(n++)); - } - catch (Exception e) - { - e.printStackTrace(); - } - } - }); - - JButton insertBeforeStart = new JButton("before start"); - insertBeforeStart.addActionListener(new ActionListener() - { - public void actionPerformed(ActionEvent event) - { - HTMLDocument doc = (HTMLDocument) html.getDocument(); - Element el = doc.getElement("insertHere"); - System.out.println("Element found:"+el); - try - { - doc.insertBeforeStart(el,"before start "+(n++)); - } - catch (Exception e) - { - e.printStackTrace(); - } - } - }); - - JButton insertAfterEnd = new JButton("after end"); - insertAfterEnd.addActionListener(new ActionListener() - { - public void actionPerformed(ActionEvent event) - { - HTMLDocument doc = (HTMLDocument) html.getDocument(); - Element el = doc.getElement("insertHere"); - System.out.println("Element found:"+el); - try - { - doc.insertAfterEnd(el,"after end "+(n++)); - } - catch (Exception e) - { - e.printStackTrace(); - } - } - }); - - JButton insertAfterStart = new JButton("after start"); - insertAfterStart.addActionListener(new ActionListener() - { - public void actionPerformed(ActionEvent event) - { - HTMLDocument doc = (HTMLDocument) html.getDocument(); - Element el = doc.getElement("insertHere"); - System.out.println("Element found:"+el); - try - { - doc.insertAfterStart(el,"after start "+(n++)); - } - catch (Exception e) - { - e.printStackTrace(); - } - } - }); - - JButton setInner = new JButton("inner"); - setInner.addActionListener(new ActionListener() + html.setEditable(false); + html.addHyperlinkListener(new HyperlinkListener() + { + + public void hyperlinkUpdate(HyperlinkEvent event) { - public void actionPerformed(ActionEvent event) + URL u = event.getURL(); + if (u != null) { - HTMLDocument doc = (HTMLDocument) html.getDocument(); - Element el = doc.getElement("insertHere"); - System.out.println("Element found:"+el); + url.setText(u.toString()); try { - doc.setInnerHTML(el,"inner "+(n++)); + html.setPage(u); } - catch (Exception e) + catch (IOException ex) { - e.printStackTrace(); + ex.printStackTrace(); } } - }); - - JButton setOuter = new JButton("outer"); - setOuter.addActionListener(new ActionListener() + } + + }); + + JScrollPane scroller = new JScrollPane(html); + JPanel urlPanel = new JPanel(); + urlPanel.setLayout(new BoxLayout(urlPanel, BoxLayout.X_AXIS)); + url.setMaximumSize(new Dimension(Integer.MAX_VALUE, Integer.MAX_VALUE)); + LoadActionListener action = new LoadActionListener(); + url.addActionListener(action); + urlPanel.add(url); + JButton loadButton = new JButton("go"); + urlPanel.add(loadButton); + loadButton.addActionListener(action); + add(urlPanel, BorderLayout.NORTH); + add(scroller, BorderLayout.CENTER); + + // Load start page. + URL startpage = getClass().getResource("welcome.html"); + try { - public void actionPerformed(ActionEvent event) - { - HTMLDocument doc = (HTMLDocument) html.getDocument(); - Element el = doc.getElement("insertHere"); - System.out.println("Element found:"+el); - try - { - doc.setOuterHTML(el,"outer "+(n++)); - } - catch (Exception e) - { - e.printStackTrace(); - } - } - }); - - - buttons.add(insertBeforeStart); - buttons.add(insertAfterStart); - buttons.add(insertBeforeEnd); - buttons.add(insertAfterEnd); + html.setPage(startpage); + url.setText(startpage.toString()); + } + catch (IOException ex) + { + System.err.println("couldn't load page: " + startpage); + } - buttons.add(setInner); - buttons.add(setOuter); - - add(center, BorderLayout.CENTER); - add(buttons, BorderLayout.SOUTH); + setPreferredSize(new Dimension(600, 400)); } /** @@ -294,18 +180,6 @@ public class HtmlDemo extends JPanel public void run() { HtmlDemo demo = new HtmlDemo(); - - JButton exit = new JButton("exit"); - exit.addActionListener(new ActionListener() - { - public void actionPerformed(ActionEvent event) - { - System.exit(0); - } - }); - - demo.buttons.add(exit); - JFrame frame = new JFrame(); frame.getContentPane().add(demo); frame.setSize(new Dimension(700, 480)); |