experimental rtl support (#209)

pom.xml

@@ -250,6 +250,11 @@
 			<artifactId>juniversalchardet</artifactId>
 			<version>1.0.3</version>
 		</dependency>
+		<dependency>
+			<groupId>com.google.gwt</groupId>
+			<artifactId>gwt-servlet</artifactId>
+			<version>2.4.0</version>
+		</dependency>
 
 		<dependency>
 			<groupId>com.google.oauth-client</groupId>

src/main/java/com/commafeed/backend/feeds/FeedUtils.java

@@ -24,6 +24,8 @@ import org.slf4j.LoggerFactory;
 import com.commafeed.backend.model.Feed;
 import com.commafeed.backend.model.FeedEntry;
 import com.google.api.client.util.Lists;
+import com.google.gwt.i18n.client.HasDirection.Direction;
+import com.google.gwt.i18n.shared.BidiUtils;
 
 public class FeedUtils {
 
@@ -120,6 +122,12 @@ public class FeedUtils {
 		return found;
 	}
 
+	public static boolean isRTL(FeedEntry entry) {
+		String content = entry.getContent().getContent();
+		Direction direction = BidiUtils.get().estimateDirection(content, true);
+		return direction == Direction.RTL;
+	}
+
 	public static String trimInvalidXmlCharacters(String xml) {
 		if (StringUtils.isBlank(xml)) {
 			return null;

src/main/java/com/commafeed/frontend/model/Entry.java

@@ -31,6 +31,7 @@ public class Entry implements Serializable {
 		entry.setGuid(feedEntry.getGuid());
 		entry.setTitle(feedEntry.getContent().getTitle());
 		entry.setContent(feedEntry.getContent().getContent());
+		entry.setRtl(FeedUtils.isRTL(feedEntry));
 		entry.setAuthor(feedEntry.getAuthor());
 		entry.setEnclosureUrl(status.getEntry().getContent().getEnclosureUrl());
 		entry.setEnclosureType(status.getEntry().getContent()
@@ -77,6 +78,9 @@ public class Entry implements Serializable {
 	@ApiProperty("entry content")
 	private String content;
 
+	@ApiProperty("wether entry content and title are rtl")
+	private boolean rtl;
+
 	@ApiProperty("entry author")
 	private String author;
 
@@ -241,4 +245,12 @@ public class Entry implements Serializable {
 		this.iconUrl = iconUrl;
 	}
 
+	public boolean isRtl() {
+		return rtl;
+	}
+
+	public void setRtl(boolean rtl) {
+		this.rtl = rtl;
+	}
+
 }

src/main/webapp/sass/generic/_misc.scss

@@ -2,6 +2,10 @@
 	cursor: pointer;
 }
 
+.rtl {
+	direction: rtl;
+}
+
 .bs-fb ul {
 	margin-bottom: 0px;
 }

src/main/webapp/templates/feeds.view.html

@@ -27,10 +27,11 @@
 					{{entry.feedName}}
 				</span>
 				<span class="entry-date visible-desktop">{{entry.date | entryDate}}</span>
-				<span class="entry-name" ng-class="{unread: entry.read == false, shrink: true}" ng-bind-html-unsafe="entry.title"></span>
+				<span class="entry-name" ng-class="{unread: entry.read == false, shrink: true, rtl: entry.rtl}" ng-bind-html-unsafe="entry.title"></span>
 				
 			</a>
-			<div class="entry-body" ui-if="settingsService.settings.viewMode == 'expanded' || (isOpen && current == entry)" ng-mouseup="bodyClicked(entry, $event)">
+			<div class="entry-body" ui-if="settingsService.settings.viewMode == 'expanded' || (isOpen && current == entry)" ng-mouseup="bodyClicked(entry, $event)"
+				ng-class="{rtl: entry.rtl}">
 				<div class="entry-header">
 					<h4 class="entry-title">
 						<a href="{{entry.url}}" target="_blank" ng-bind-html-unsafe="entry.title"></a>