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Error Window Add-on

This add-on allows to add a sub-window to inform that an error was caused by an exception.

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The sub-window shows different information depending on the running mode of the application:

• if the application is running in debug mode, it shows the stack trace of the exception.
• if the application is running in production mode, it shows a code to report that can be found in log files.

The dialog (ErrorWindow) can be automatically invoked through an error handler configured by com.flowingcode.vaadin.addons.errorwindow.VaadinServiceInitListenerImpl or just by itself calling ErrorManager.showError(). It is also possible to use the ErrorWindow directly for messages customization purposes.

Sample code

        final Button errorButton = new Button("Throw Error", new ClickListener() {

            @Override
            public void buttonClick(final ClickEvent event) {
                Integer.parseInt("asdf");
            }
        });
        errorButton.setErrorHandler(new WindowErrorHandler(this));

		Button throwErrorWithoutErrorHandler = new Button("Throw Error without an error handler", ev->{
			try {
				Integer.parseInt("asdf");
			} catch (NumberFormatException e) {
				ErrorManager.showError(e);
			}
		});

		Button throwErrorWithCustomMessage = new Button("Throw Error with custom message", ev->{
			try {
				Integer.parseInt("asdf");
			} catch (NumberFormatException e) {
				ErrorWindow w = new ErrorWindow(e, "CUSTOM ERROR MESSAGE");
				w.open();
			}
		});

Links

• View on GitHub
• Online Demo
• Source Code
• Issue Tracker
• Author Homepage

Compatibility