fixed #12

pom.xml

@@ -4,7 +4,7 @@
 
 	<groupId>com.mgreau.wwsmad</groupId>
 	<artifactId>when-websocket-met-asciidoctor</artifactId>
-	<version>0.1.0-alpha2-SNAPSHOT</version>
+	<version>0.1.0-alpha3-SNAPSHOT</version>
 	<packaging>war</packaging>
 
 	<name>wWSmAD : When Websocket met Asciidoctor : </name>
@@ -145,6 +145,12 @@
 			<groupId>org.asciidoctor</groupId>
 			<artifactId>asciidoctor-java-integration</artifactId>
 		</dependency>
+		<!-- PostProcessor -->
+		<dependency>
+	      <groupId>org.jsoup</groupId>
+	      <artifactId>jsoup</artifactId>
+	      <version>1.7.1</version>
+	    </dependency>
 
 		<!-- Tests -->
 		<dependency>

src/main/java/com/mgreau/wwsmad/asciidoctor/AsciidoctorProcessor.java

@@ -15,6 +15,7 @@
 import org.asciidoctor.DocumentHeader;
 import org.asciidoctor.OptionsBuilder;
 import org.asciidoctor.SafeMode;
+import org.asciidoctor.extension.ExtensionRegistry;
 
 @ApplicationScoped
 public class AsciidoctorProcessor {
@@ -25,6 +26,10 @@ public class AsciidoctorProcessor {
     // tag::render[]
 	public String renderAsDocument(String source, String baseDir) {
 		logger.info("Start rendering adoc");
+
+		ExtensionRegistry extensionRegistry = this.delegate.extensionRegistry(); 
+		extensionRegistry.postprocessor(IFrameAnchorPostProcessor.class);
+
 		return delegate.render(source, OptionsBuilder.options()
 				.safe(SafeMode.UNSAFE).backend("html5").headerFooter(true).eruby("erubis")
 				//.option("base_dir", baseDir)

src/main/java/com/mgreau/wwsmad/asciidoctor/IFrameAnchorPostProcessor.java

@@ -0,0 +1,37 @@
+package com.mgreau.wwsmad.asciidoctor;
+
+import org.asciidoctor.extension.Postprocessor;
+import org.asciidoctor.internal.DocumentRuby;
+import org.jsoup.Jsoup;
+import org.jsoup.nodes.Document;
+import org.jsoup.nodes.Element;
+
+/**
+ * #12 : iframe : making linking between anchors work.
+ * 
+ * @author greau.maxime@gmail.com
+ *
+ */
+public class IFrameAnchorPostProcessor extends Postprocessor {
+
+    public IFrameAnchorPostProcessor(DocumentRuby documentRuby) {
+        super(documentRuby);
+    }
+
+    @Override
+    public String process(String output) {
+
+        final Document document = Jsoup.parse(output);
+        final String js = "js/iframe/iframe_anchors.js";
+
+        if (document.getElementsByAttributeValue("src", js).size() ==  0){
+        	 Element head = document.getElementsByTag("head").first();
+
+        	 head.appendElement("script").attr("type", "text/javascript").attr("src", "http://code.jquery.com/jquery-1.7.2.min.js");
+             head.appendElement("script").attr("type", "text/javascript").attr("src", js);
+        }
+
+        return document.html();
+    }
+
+}

src/main/webapp/js/iframe/iframe_anchors.js

@@ -0,0 +1,27 @@
+	$(function () {
+		//var iframeOffset = $("#html5-rendered", window.parent.document).offset();
+        $("a").each(function () {
+            var link = $(this);
+            var href = link.attr("href");
+            if (href && href[0] == "#") {
+                var name = href.substring(1);
+                $(this).click(function () {
+                    var nameElement = $("[name='" + name + "']");
+                    var idElement = $("#" + name);
+                    var element = null;
+                    if (nameElement.length > 0) {
+                        element = nameElement;
+                    } else if (idElement.length > 0) {
+                        element = idElement;
+                    }
+
+                    if (element) {
+                        var offset = element.offset();
+                        window.scrollTo(offset.left, offset.top);
+                    }
+
+                    return false;
+                });
+            }
+        });
+	});