/*
* Christopher Deckers (chrriis@nextencia.net)
* http://www.nextencia.net
*
* See the file "readme.txt" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
package chrriis.dj.nativeswing.swtimpl.demo.examples.webbrowser;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.util.Arrays;
import javax.swing.BorderFactory;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;
import chrriis.common.UIUtils;
import chrriis.dj.nativeswing.swtimpl.NativeInterface;
import chrriis.dj.nativeswing.swtimpl.components.JWebBrowser;
import chrriis.dj.nativeswing.swtimpl.components.WebBrowserFunction;
/**
* @author Christopher Deckers
*/
public class WebBrowserFunctionsExample {
private static final String LS = System.getProperty("line.separator");
public static JComponent createContent() {
JPanel contentPane = new JPanel(new BorderLayout());
JPanel webBrowserPanel = new JPanel(new BorderLayout());
webBrowserPanel.setBorder(BorderFactory.createTitledBorder("Native Web Browser component"));
JWebBrowser webBrowser = new JWebBrowser();
webBrowser.setBarsVisible(false);
final JTextArea functionCallsTextArea = new JTextArea(7, 0);
webBrowser.registerFunction(new WebBrowserFunction("invokeJavaNoError") {
@Override
public Object invoke(JWebBrowser webBrowser, Object... args) {
StringBuilder sb = new StringBuilder();
sb.append("-> " + getName() + "() called from Javascript with args:");
for (int i=0; i<args.length; i++) {
Object arg = args[i];
if (arg == null) {
sb.append(LS).append(" null");
} else {
sb.append(LS).append(" ").append(arg instanceof Object[]? Arrays.deepToString((Object[])arg): arg.toString()).append(" (").append(arg.getClass().getSimpleName()).append(")");
}
}
sb.append(LS).append("-> return Object[] result:").append(LS).append(" (short)3").append(LS).append(" true").append(LS).append(" null").append(LS).append(" new Object[] {\"A String\", false}").append(LS).append(" \"Hello World!\"").append(LS).append(" 2.0f / 3.0f");
functionCallsTextArea.setText(sb.toString());
functionCallsTextArea.setCaretPosition(0);
return new Object[] {(short)3, true, null, new Object[] {"A String", false}, "Hello World!", 2.0f / 3.0f};
}
});
webBrowser.registerFunction(new WebBrowserFunction("invokeJavaWithError") {
@Override
public Object invoke(JWebBrowser webBrowser, Object... args) {
functionCallsTextArea.setText("-> " + getName() + "() called from Javascript." + LS + "-> Generating a Java runtime exception.");
functionCallsTextArea.setCaretPosition(0);
// This will generate an error
return 10 / 0;
}
});
webBrowser.setHTMLContent(
"<html>" + LS +
" <head>" + LS +
" <script language=\"JavaScript\">" + LS +
" function callJavaNoError() {" + LS +
" var s = 'Result from invokeJavaNoError():';" + LS +
" var result = invokeJavaNoError(123, false, null, [1.2, ['hi', true]], 'swing');" + LS +
" for (var i = 0; i < result.length; i++) {" + LS +
" s += '\\n ' + result[i];" + LS +
" }" + LS +
" alert(s);" + LS +
" }" + LS +
" function callJavaWithError() {" + LS +
" var s = 'Result from invokeJavaWithError():\\n ';" + LS +
" try {" + LS +
" invokeJavaWithError();" + LS +
" s += 'success';" + LS +
" } catch (e) {" + LS +
" s += 'Java error (' + e.message + ')';" + LS +
" }" + LS +
" alert(s);" + LS +
" }" + LS +
" </script>" + LS +
" </head>" + LS +
" <body>" + LS +
" <p>" + LS +
" Object[] invokeJavaNoError(123, false, null, [1.2, ['hi', true]], 'swing'):<br/><input id=\"button1\" type=\"button\" value=\"call\" onclick=\"callJavaNoError();\"/>" + LS +
" </p><p>" + LS +
" Object invokeJavaWithError():<br/><input id=\"button2\" type=\"button\" value=\"call\" onclick=\"callJavaWithError();\"/>" + LS +
" </p>" + LS +
" </body>" + LS +
"</html>");
webBrowserPanel.add(webBrowser, BorderLayout.CENTER);
webBrowserPanel.setPreferredSize(new Dimension(100, 200));
contentPane.add(webBrowserPanel, BorderLayout.NORTH);
// Create an additional area to show the function calls.
JPanel functionalCallsPanel = new JPanel(new BorderLayout());
functionalCallsPanel.setBorder(BorderFactory.createTitledBorder("Java log for Javascript custom function calls"));
functionCallsTextArea.setEditable(false);
functionalCallsPanel.add(new JScrollPane(functionCallsTextArea));
contentPane.add(functionalCallsPanel, BorderLayout.CENTER);
return contentPane;
}
/* Standard main method to try that test as a standalone application. */
public static void main(String[] args) {
NativeInterface.open();
UIUtils.setPreferredLookAndFeel();
SwingUtilities.invokeLater(new Runnable() {
public void run() {
JFrame frame = new JFrame("DJ Native Swing Test");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(createContent(), BorderLayout.CENTER);
frame.setSize(800, 600);
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
});
NativeInterface.runEventPump();
}
}