public class Trigger extends Object
JavaScriptSupport environmental).| Name | Type | Flags | Default | Default Prefix |
|---|---|---|---|---|
| event | String | literal |
In this example, we are showing how to trigger an event from the template of a page. When the following page is rendered the both instances of the component Trigger publish an arbitrary event.
<html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_1_0.xsd">
<body>
<h1>Trigger Demo</h1>
<p> ... </p>
<t:trigger event="addAdditionalScriptLinks"/>
<p> ... </p>
<t:trigger event="provideAdditionalMarkup"/>
</body>
</html>
Inside the handler method for the event addAdditionalScriptLinks we add a link to a JavaScript file. The handler method for the event provideAdditionalMarkup provides some additional markup. The MarkupWriter is passed as the event context.
public class TriggerDemo
{
@Environmental
private JavaScriptSupport jsSupport;
@Inject @Path("context:js/scripts.js")
private Asset scripts;
public void onAddAdditionalScriptLinks()
{
jsSupport.importJavaScriptLibrary(scripts);
}
public void onProvideAdditionalMarkup(MarkupWriter writer)
{
writer.writeRaw("Hello.");
}
}
public Trigger()
${project.version} - Copyright © 2003-2015 The Apache Software Foundation.