From b45cd636e0ca7a01d66a775cb469cd75fca4c01b Mon Sep 17 00:00:00 2001
From: billy1380 <william.shakour@gmail.com>
Date: Fri, 7 Aug 2015 12:56:07 +0100
Subject: [PATCH] added ability to link to youtube videos as part of
 enhancement #9

---
 .../blogwt/client/markdown/Processor.java     |   6 +-
 .../client/markdown/plugin/YoutubePlugin.java | 102 ++++++++++++++++++
 2 files changed, 106 insertions(+), 2 deletions(-)
 create mode 100644 src/main/java/com/willshex/blogwt/client/markdown/plugin/YoutubePlugin.java

diff --git a/src/main/java/com/willshex/blogwt/client/markdown/Processor.java b/src/main/java/com/willshex/blogwt/client/markdown/Processor.java
index 55903b2e..5038fb55 100644
--- a/src/main/java/com/willshex/blogwt/client/markdown/Processor.java
+++ b/src/main/java/com/willshex/blogwt/client/markdown/Processor.java
@@ -22,6 +22,7 @@
 import com.willshex.blogwt.client.markdown.plugin.CachedIncludePlugin;
 import com.willshex.blogwt.client.markdown.plugin.GalleryPlugin;
 import com.willshex.blogwt.client.markdown.plugin.MapPlugin;
+import com.willshex.blogwt.client.markdown.plugin.YoutubePlugin;
 import com.willshex.blogwt.shared.helper.PropertyHelper;
 
 import emoji.gwt.emoji.Emoji;
@@ -110,7 +111,7 @@ protected void registerPlugins () {
 
 		registerPlugins(new WebSequencePlugin(ensureManager()), includePlugin,
 				new GalleryPlugin(), mapsApiKey == null ? null : new MapPlugin(
-						mapsApiKey, ensureManager()));
+						mapsApiKey, ensureManager()), new YoutubePlugin());
 	}
 
 	public Processor () {
@@ -127,7 +128,8 @@ public Processor () {
 			@Override
 			public void openImage (StringBuilder out, String link, String title) {
 				super.openImage(out, link, title);
-				out.append(" class=\"img-responsive " + Resources.RES.styles().image() + "\" ");
+				out.append(" class=\"img-responsive "
+						+ Resources.RES.styles().image() + "\" ");
 			}
 
 			/* (non-Javadoc)
diff --git a/src/main/java/com/willshex/blogwt/client/markdown/plugin/YoutubePlugin.java b/src/main/java/com/willshex/blogwt/client/markdown/plugin/YoutubePlugin.java
new file mode 100644
index 00000000..2a7dae2b
--- /dev/null
+++ b/src/main/java/com/willshex/blogwt/client/markdown/plugin/YoutubePlugin.java
@@ -0,0 +1,102 @@
+//
+//  YoutubePlugin.java
+//  blogwt
+//
+//  Created by William Shakour (billy1380) on 7 Aug 2015.
+//  Copyright © 2015 WillShex Limited. All rights reserved.
+//
+package com.willshex.blogwt.client.markdown.plugin;
+
+import java.util.List;
+import java.util.Map;
+
+import org.markdown4j.Plugin;
+
+/**
+ * @author William Shakour (billy1380)
+ *
+ */
+public class YoutubePlugin extends Plugin {
+
+	public static final String ASPECT_16_9 = "16by9";
+	public static final String ASPECT_4_3 = "4by3";
+
+	public static final String RESPONSIVE_CLASS = "embed-responsive";
+	public static final String RESPONSIVE_ITEM_CLASS = "embed-responsive-item";
+
+	public YoutubePlugin () {
+		super("youtube");
+	}
+
+	@Override
+	public void emit (StringBuilder out, List<String> lines,
+			Map<String, String> params) {
+
+		boolean hasAllowFullscreen = params.containsKey("allowfullscreen"), hasResponsive = params
+				.containsKey("responsive"), hasWidth = params
+				.containsKey("width"), hasHeight = params.containsKey("height"), hasSrc = params
+				.containsKey("src"), hasFrameBorder = params
+				.containsKey("frameborder");
+
+		if (hasResponsive) {
+			String aspect = ASPECT_16_9;
+
+			if (params.containsKey("aspectratio")) {
+				switch (params.get("aspectratio")) {
+				case ASPECT_4_3:
+					aspect = ASPECT_4_3;
+					break;
+				}
+			}
+
+			out.append("<div class=\"");
+			out.append(RESPONSIVE_CLASS);
+			out.append(" ");
+			out.append(RESPONSIVE_CLASS);
+			out.append("-");
+			out.append(aspect);
+			out.append("\">");
+		} else {
+			out.append("<div class=\"text-center\">");
+		}
+
+		out.append("<iframe");
+		out.append(" ");
+
+		if (hasWidth && !hasResponsive) {
+			out.append("width=\"");
+			out.append(params.get("width"));
+			out.append("\"");
+			out.append(" ");
+		}
+
+		if (hasHeight && !hasResponsive) {
+			out.append("height=\"");
+			out.append(params.get("height"));
+			out.append("\"");
+			out.append(" ");
+		}
+
+		if (hasSrc) {
+			out.append("src=\"");
+			out.append(params.get("src"));
+			out.append("\"");
+			out.append(" ");
+		}
+
+		if (hasFrameBorder) {
+			out.append("frameborder=\"");
+			out.append(params.get("frameborder"));
+			out.append("\"");
+			out.append(" ");
+		}
+
+		if (hasAllowFullscreen) {
+			out.append("allowfullscreen");
+			out.append(" ");
+		}
+
+		out.append("></iframe></div>");
+
+	}
+}