Allow FreenetTemplatePages to set arbitrary <link> nodes in the result HTML.

diff --git a/src/main/java/net/pterodactylus/sone/web/page/FreenetTemplatePage.java b/src/main/java/net/pterodactylus/sone/web/page/FreenetTemplatePage.java
index 97c8bf3..0668154 100644 (file)
--- a/src/main/java/net/pterodactylus/sone/web/page/FreenetTemplatePage.java
+++ b/src/main/java/net/pterodactylus/sone/web/page/FreenetTemplatePage.java
@@ -20,6 +20,9 @@ package net.pterodactylus.sone.web.page;
 import java.io.StringWriter;
 import java.util.Collection;
 import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
@@ -32,6 +35,7 @@ import freenet.clients.http.LinkEnabledCallback;
 import freenet.clients.http.PageMaker;
 import freenet.clients.http.PageNode;
 import freenet.clients.http.ToadletContext;
+import freenet.support.HTMLNode;
 
 /**
  * Base class for all {@link Page}s that are rendered with {@link Template}s and
@@ -118,6 +122,12 @@ public class FreenetTemplatePage implements Page, LinkEnabledCallback {
                for (String styleSheet : getStyleSheets()) {
                        pageNode.addCustomStyleSheet(styleSheet);
                }
+               for (Map<String, String> linkNodeParameters : getAdditionalLinkNodes(request)) {
+                       HTMLNode linkNode = pageNode.headNode.addChild("link");
+                       for (Entry<String, String> parameter : linkNodeParameters.entrySet()) {
+                               linkNode.addAttribute(parameter.getKey(), parameter.getValue());
+                       }
+               }
                String shortcutIcon = getShortcutIcon();
                if (shortcutIcon != null) {
                        pageNode.addForwardLink("icon", shortcutIcon);
@@ -206,6 +216,17 @@ public class FreenetTemplatePage implements Page, LinkEnabledCallback {
                return null;
        }
 
+       /**
+        * Returns additional &lt;link&gt; nodes for the HTML’s &lt;head&gt; node.
+        *
+        * @param request
+        *            The request for which to return the link nodes
+        * @return All link nodes that should be added to the HTML head
+        */
+       protected List<Map<String, String>> getAdditionalLinkNodes(Request request) {
+               return Collections.emptyList();
+       }
+
        //
        // INTERFACE LinkEnabledCallback
        //