Attachment 180565 Details for Bug 327385 – Better sample showing JSON expected behavior

Better sample showing JSON expected behavior

Snippet307JSON2.java (text/java), 4.19 KB, created by Christopher Deckers

on 2010-10-10 13:27:32 EDT

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Creator: Christopher Deckers

Created: 2010-10-10 13:27:32 EDT

Size: 4.19 KB

patch

obsolete

>package test;
>
>/*
> * Browser example snippet: call Java from JavaScript.
> *
> * For a list of all SWT example snippets see
> * http://www.eclipse.org/swt/snippets/
> *
> * @since 3.5
> */
>import java.util.HashMap;
>import java.util.Map;
>
>import org.eclipse.swt.SWT;
>import org.eclipse.swt.SWTError;
>import org.eclipse.swt.browser.Browser;
>import org.eclipse.swt.browser.BrowserFunction;
>import org.eclipse.swt.browser.LocationAdapter;
>import org.eclipse.swt.browser.LocationEvent;
>import org.eclipse.swt.browser.ProgressAdapter;
>import org.eclipse.swt.browser.ProgressEvent;
>import org.eclipse.swt.layout.FillLayout;
>import org.eclipse.swt.widgets.Display;
>import org.eclipse.swt.widgets.Shell;
>
>public class Snippet307JSON2 {
>
>public static void main (String [] args) {
>	Display display = new Display ();
>	Shell shell = new Shell (display);
>	shell.setLayout (new FillLayout ());
>	shell.setBounds (10,10,300,200);
>
>	final Browser browser;
>	try {
>		browser = new Browser (shell, SWT.NONE);
>	} catch (SWTError e) {
>		System.out.println ("Could not instantiate Browser: " + e.getMessage ());
>		display.dispose();
>		return;
>	}
>	browser.setText (createHTML ());
>	final BrowserFunction function = new CustomFunction (browser, "theJavaFunction");
>
>	browser.addProgressListener (new ProgressAdapter () {
>		@Override
>    public void completed (ProgressEvent event) {
>			browser.addLocationListener (new LocationAdapter () {
>				@Override
>        public void changed (LocationEvent event) {
>					browser.removeLocationListener (this);
>					System.out.println ("left java function-aware page, so disposed CustomFunction");
>					function.dispose ();
>				}
>			});
>		}
>	});
>
>	shell.open ();
>	while (!shell.isDisposed ()) {
>		if (!display.readAndDispatch ()) {
>      display.sleep ();
>    }
>	}
>	display.dispose ();
>}
>
>static class CustomFunction extends BrowserFunction {
>	CustomFunction (Browser browser, String name) {
>		super (browser, name);
>	}
>	@Override
>  public Object function (Object[] arguments) {
>		System.out.println ("theJavaFunction() called from javascript with args:");
>		for (int i = 0; i < arguments.length; i++) {
>			Object arg = arguments[i];
>			if (arg == null) {
>				System.out.println ("\t-->null");
>			} else {
>				System.out.println ("\t-->" + arg.getClass ().getName () + ": " + arg.toString ());
>			}
>		}
>		Map<String, Object> returnValue = new HashMap<String, Object>();
>		returnValue.put("short", new Short ((short)3));
>		returnValue.put("boolean", Boolean.TRUE);
>		returnValue.put("null", null);
>		returnValue.put("array", new Object[] {"a string", new Boolean (false)});
>		returnValue.put("string", "hi");
>		returnValue.put("float", new Float (2.0f / 3.0f));
>		//int z = 3 / 0; // uncomment to cause a java error instead
>		return returnValue;
>	}
>}
>
>static String createHTML () {
>	StringBuffer buffer = new StringBuffer ();
>	buffer.append ("<html>\n");
>	buffer.append ("<head>\n");
>	buffer.append ("<script language=\"JavaScript\">\n");
>	buffer.append ("function function1() {\n");
>	buffer.append ("    var result;\n");
>	buffer.append ("    try {\n");
>	buffer.append ("        result = theJavaFunction({\n");
>	buffer.append ("            'number': 12,\n");
>  buffer.append ("            'boolean': false,\n");
>  buffer.append ("            'null': null,\n");
>  buffer.append ("            'array': [3.6, ['swt', true]],\n");
>  buffer.append ("            'string': 'eclipse'\n");
>  buffer.append ("        });\n");
>	buffer.append ("    } catch (e) {\n");
>	buffer.append ("        alert('a java error occurred: ' + e.message);\n");
>	buffer.append ("        return;\n");
>	buffer.append ("    }\n");
>	buffer.append ("    for (var i in result) {\n");
>	buffer.append ("        alert('returned ' + i + ': ' + result[i]);\n");
>	buffer.append ("    }\n");
>	buffer.append ("}\n");
>	buffer.append ("</script>\n");
>	buffer.append ("</head>\n");
>	buffer.append ("<body>\n");
>	buffer.append ("<input id=button type=\"button\" value=\"Push to Invoke Java\" onclick=\"function1();\">\n");
>	buffer.append ("<p><a href=\"http://www.eclipse.org\">go to eclipse.org</a>\n");
>	buffer.append ("</body>\n");
>	buffer.append ("</html>\n");
>	return buffer.toString ();
>}
>
>}

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Attachments on bug 327385: 180544 | 180565