protected WComponent createUI ( ) { // Check if the parameter COMPONENT_TO_LAUNCH_PARAM_KEY has been // configured with the name of a component to launch. WComponent sharedApp ; uiClassName = getComponentToLaunchClassName ( ) ; if ( uiClassName == null ) { sharedApp = new WText ( "You need to set the class name of the WComponent you want to run.<br />" + "Do this by setting the parameter \"" + COMPONENT_TO_LAUNCH_PARAM_KEY + "\" in your \"local_app.properties\" file.<br />" + "Eg. <code>" + COMPONENT_TO_LAUNCH_PARAM_KEY + "=com.github.bordertech.wcomponents.examples.picker.ExamplePicker</code>" ) ; ( ( WText ) sharedApp ) . setEncodeText ( false ) ; } else { UIRegistry registry = UIRegistry . getInstance ( ) ; sharedApp = registry . getUI ( uiClassName ) ; if ( sharedApp == null ) { sharedApp = new WText ( "Unable to load the component \"" + uiClassName + "\".<br />" + "Either the component does not exist as a resource in the classpath," + " or is not a WComponent.<br />" + "Check that the parameter \"" + COMPONENT_TO_LAUNCH_PARAM_KEY + "\" is set correctly." ) ; ( ( WText ) sharedApp ) . setEncodeText ( false ) ; } } return sharedApp ; }
Creates the UI which the launcher displays . If there is misconfiguration or error a UI containing an error message is returned .