import java.util.Collections;
import net.pterodactylus.util.template.Template;
+import freenet.clients.http.LinkEnabledCallback;
import freenet.clients.http.PageMaker;
import freenet.clients.http.PageNode;
import freenet.clients.http.ToadletContext;
/**
* Base class for all {@link Page}s that are rendered with {@link Template}s.
- *
+ *
* @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
*/
-public class TemplatePage implements Page {
+public class TemplatePage implements Page, LinkEnabledCallback {
/** The path of the page. */
private final String path;
/**
* Creates a new template page.
- *
+ *
* @param path
* The path of the page
* @param template
pageNode.addCustomStyleSheet(styleSheet);
}
- processTemplate(request, template);
+ try {
+ processTemplate(request, template);
+ } catch (RedirectException re1) {
+ return new RedirectResponse(re1.getTarget());
+ }
+
StringWriter stringWriter = new StringWriter();
template.render(stringWriter);
pageNode.content.addChild("%", stringWriter.toString());
/**
* Can be overridden to return a custom set of style sheets that are to be
* included in the page’s header.
- *
+ *
* @return Additional style sheets to load
*/
protected Collection<String> getStyleSheets() {
/**
* Can be overridden when extending classes need to set variables in the
* template before it is rendered.
- *
+ *
* @param request
* The request that is rendered
* @param template
* The template to set variables in
+ * @throws RedirectException
+ * if the processing page wants to redirect after processing
*/
- protected void processTemplate(Request request, Template template) {
+ protected void processTemplate(Request request, Template template) throws RedirectException {
/* do nothing. */
}
/**
* Can be overridden to redirect the user to a different page, in case a log
* in is required, or something else is wrong.
- *
+ *
* @param request
* The request that is processed
* @return The URL to redirect to, or {@code null} to not redirect
return null;
}
+ //
+ // INTERFACE LinkEnabledCallback
+ //
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public boolean isEnabled(ToadletContext toadletContext) {
+ return true;
+ }
+
+ /**
+ * Exception that can be thrown to signal that a subclassed {@link Page}
+ * wants to redirect the user during the
+ * {@link TemplatePage#processTemplate(net.pterodactylus.sone.web.page.Page.Request, Template)}
+ * method call.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+ public class RedirectException extends Exception {
+
+ /** The target to redirect to. */
+ private final String target;
+
+ /**
+ * Creates a new redirect exception.
+ *
+ * @param target
+ * The target of the redirect
+ */
+ public RedirectException(String target) {
+ this.target = target;
+ }
+
+ /**
+ * Returns the target to redirect to.
+ *
+ * @return The target to redirect to
+ */
+ public String getTarget() {
+ return target;
+ }
+
+ }
+
}