psmith 2003/06/18 20:38:59
Modified: src/java/org/apache/log4j/chainsaw WelcomePanel.java
Log:
Changed Welcome Panel into nearly a fully fledged browser.
Added Home, and back button support. You can now click on links in
the browser and they actually go somewhere!.
This was a lot easier than I thought!
Revision Changes Path
1.6 +129 -13
jakarta-log4j-sandbox/src/java/org/apache/log4j/chainsaw/WelcomePanel.java
Index: WelcomePanel.java
===================================================================
RCS file:
/home/cvs/jakarta-log4j-sandbox/src/java/org/apache/log4j/chainsaw/WelcomePanel.java,v
retrieving revision 1.5
retrieving revision 1.6
diff -u -r1.5 -r1.6
--- WelcomePanel.java 17 Jun 2003 20:06:51 -0000 1.5
+++ WelcomePanel.java 19 Jun 2003 03:38:59 -0000 1.6
@@ -49,15 +49,34 @@
package org.apache.log4j.chainsaw;
+import org.apache.log4j.chainsaw.icons.ChainsawIcons;
+
+import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
+import java.awt.FlowLayout;
+import java.awt.GridBagConstraints;
+import java.awt.GridBagLayout;
+import java.awt.event.ActionEvent;
+
+import java.io.IOException;
+
import java.net.URL;
+import java.util.Stack;
+
+import javax.swing.AbstractAction;
+import javax.swing.Action;
import javax.swing.BorderFactory;
import javax.swing.BoxLayout;
+import javax.swing.ImageIcon;
+import javax.swing.JButton;
import javax.swing.JEditorPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
+import javax.swing.SwingUtilities;
+import javax.swing.event.HyperlinkEvent;
+import javax.swing.event.HyperlinkListener;
/**
@@ -69,26 +88,123 @@
* @author Scott Deboy <[EMAIL PROTECTED]>
*/
public class WelcomePanel extends JPanel {
+ private Stack urlStack = new Stack();
+ private final JEditorPane textInfo = new JEditorPane();
+ private final URLToolbar urlToolbar = new URLToolbar();
+ private final URL helpURL;
+
public WelcomePanel() {
- setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
+ setLayout(new BorderLayout());
setBackground(Color.white);
+ add(urlToolbar, BorderLayout.NORTH);
- final URL helpURL =
+ helpURL =
getClass().getClassLoader().getResource(
"org/apache/log4j/chainsaw/WelcomePanel.html");
if (helpURL != null) {
- final JEditorPane textInfo = new JEditorPane();
- textInfo.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
- textInfo.setEditable(false);
- textInfo.setPreferredSize(new Dimension(320, 240));
-
- JScrollPane pane = new JScrollPane(textInfo);
- pane.setBorder(null);
- add(pane);
- try {
- textInfo.setPage(helpURL);
- } catch (Exception e) {e.printStackTrace();}
+ textInfo.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
+ textInfo.setEditable(false);
+ textInfo.setPreferredSize(new Dimension(320, 240));
+
+ JScrollPane pane = new JScrollPane(textInfo);
+ pane.setBorder(null);
+ add(pane, BorderLayout.CENTER);
+
+ try {
+ textInfo.setPage(helpURL);
+ textInfo.addHyperlinkListener(
+ new HyperlinkListener() {
+ public void hyperlinkUpdate(HyperlinkEvent e) {
+ if (e.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
+ urlStack.add(textInfo.getPage());
+
+ try {
+ textInfo.setPage(e.getURL());
+ urlToolbar.updateToolbar();
+ } catch (IOException e1) {
+ e1.printStackTrace();
+ }
+ }
+ }
+ });
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+ }
+ }
+
+ void setURL(final URL url) {
+ SwingUtilities.invokeLater(
+ new Runnable() {
+ public void run() {
+ try {
+ textInfo.setPage(url);
+ urlToolbar.updateToolbar();
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ }
+ });
+
+ }
+
+ private class URLToolbar extends JPanel {
+ private final Action previousAction =
+ new AbstractAction(null, new ImageIcon(ChainsawIcons.ICON_BACK)) {
+ public void actionPerformed(ActionEvent e) {
+ if (urlStack.isEmpty()) {
+ return;
+ }
+ setURL((URL)urlStack.pop());
+
+ }
+ };
+
+ private final Action homeAction =
+ new AbstractAction(null, new ImageIcon(ChainsawIcons.ICON_HOME)) {
+ public void actionPerformed(ActionEvent e) {
+ if (urlStack.isEmpty()) {
+ return;
+ }
+ setURL(helpURL);
+ urlStack.clear();
+ }
+ };
+
+ private URLToolbar() {
+ setLayout(new GridBagLayout());
+ updateToolbar();
+ previousAction.putValue(Action.SHORT_DESCRIPTION, "Back");
+ homeAction.putValue(Action.SHORT_DESCRIPTION, "Home");
+
+ GridBagConstraints c = new GridBagConstraints();
+ c.weightx = 0.0;
+ c.weighty = 0.0;
+ c.ipadx = 1;
+ c.ipady = 1;
+ c.gridx = 0;
+ c.gridy = 0;
+
+ c.fill = GridBagConstraints.NONE;
+ c.anchor = GridBagConstraints.WEST;
+
+ JButton home = new SmallButton(homeAction);
+ add(home, c);
+
+ c.gridx = 1;
+ JButton previous = new SmallButton(previousAction);
+ previous.setEnabled(false);
+ add(previous, c);
+
+ c.gridx = 2;
+ c.weightx = 1;
+ JPanel p = new JPanel();
+ add(p, c);
+ }
+
+ void updateToolbar() {
+ previousAction.setEnabled(!urlStack.isEmpty());
}
}
}
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