add youtube trending extractor

src/main/java/org/schabi/newpipe/extractor/StreamingService.java

@@ -49,7 +49,7 @@ public abstract class StreamingService {
     public abstract StreamExtractor getStreamExtractor(String url) throws IOException, ExtractionException;
     public abstract ChannelExtractor getChannelExtractor(String url, String nextStreamsUrl) throws IOException, ExtractionException;
     public abstract PlaylistExtractor getPlaylistExtractor(String url, String nextStreamsUrl) throws IOException, ExtractionException;
-    public abstract KioskList getKioskList();
+    public abstract KioskList getKioskList() throws ExtractionException;
 
     public ChannelExtractor getChannelExtractor(String url) throws IOException, ExtractionException {
         return getChannelExtractor(url, null);

src/main/java/org/schabi/newpipe/extractor/kiosk/KioskList.java

@@ -1,25 +1,5 @@
 package org.schabi.newpipe.extractor.kiosk;
 
-/*
- * Created by Christian Schabesberger on 12.08.17.
- *
- * Copyright (C) Christian Schabesberger 2017 <chris.schabesberger@mailbox.org>
- * KioskList.java is part of NewPipe.
- *
- * NewPipe is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * NewPipe is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
- */
-
 import org.schabi.newpipe.extractor.UrlIdHandler;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 
@@ -27,7 +7,7 @@ import java.util.HashMap;
 import java.util.Map;
 import java.util.Set;
 
-public class KioskList {
+public  class KioskList {
     private int service_id;
     private HashMap<String, KioskEntry> kioskList = new HashMap<>();
 
@@ -44,12 +24,12 @@ public class KioskList {
         this.service_id = service_id;
     }
 
-    public void addKioskEntry(String kioskType, KioskExtractor extractor, UrlIdHandler handler)
+    public void addKioskEntry(KioskExtractor extractor, UrlIdHandler handler)
         throws Exception {
-        if(kioskList.get(kioskType) != null) {
+        if(kioskList.get(extractor.getType()) != null) {
-            throw new Exception("Kiosk with type " + kioskType + " already exists.");
+            throw new Exception("Kiosk with type " + extractor.getType() + " already exists.");
         }
-        kioskList.put(kioskType, new KioskEntry(extractor, handler));
+        kioskList.put(extractor.getType(), new KioskEntry(extractor, handler));
     }
 
     public KioskExtractor getExtractorByType(String kioskType) throws ExtractionException {

src/main/java/org/schabi/newpipe/extractor/services/youtube/YoutubeService.java

@@ -81,11 +81,16 @@ public class YoutubeService extends StreamingService {
     }
 
     @Override
-    public KioskList getKioskList() {
+    public KioskList getKioskList() throws ExtractionException {
         KioskList list = new KioskList(getServiceId());
 
         // add kiosks here e.g.:
-        //list.addKioskEntry("trinding", new TrendingKiosk(), new TrendingUrlIdHandler());
+        YoutubeTrendingUrlIdHandler h = new YoutubeTrendingUrlIdHandler();
+        try {
+            list.addKioskEntry(new YoutubeTrendingExtractor(this, h.getUrl(""), h.getUrl("")), h);
+        } catch (Exception e) {
+            throw new ExtractionException(e);
+        }
 
         return list;
     }

src/main/java/org/schabi/newpipe/extractor/services/youtube/YoutubeTrendingExtractor.java

@@ -0,0 +1,63 @@
+package org.schabi.newpipe.extractor.services.youtube;
+
+/*
+ * Created by Christian Schabesberger on 12.08.17.
+ *
+ * Copyright (C) Christian Schabesberger 2017 <chris.schabesberger@mailbox.org>
+ * YoutubeTrendingExtractor.java is part of NewPipe.
+ *
+ * NewPipe is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * NewPipe is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import org.schabi.newpipe.extractor.ListExtractor;
+import org.schabi.newpipe.extractor.StreamingService;
+import org.schabi.newpipe.extractor.UrlIdHandler;
+import org.schabi.newpipe.extractor.exceptions.ExtractionException;
+import org.schabi.newpipe.extractor.kiosk.KioskExtractor;
+import org.schabi.newpipe.extractor.stream.StreamInfoItemCollector;
+import java.io.IOException;
+
+public class YoutubeTrendingExtractor extends KioskExtractor {
+
+    public YoutubeTrendingExtractor(StreamingService service, String url, String nextStreamsUrl)
+        throws IOException, ExtractionException {
+        super(service, url, nextStreamsUrl);
+    }
+
+    @Override
+    public void fetchPage()
+        throws IOException, ExtractionException {
+
+    }
+
+    @Override
+    public String getType() {
+        return "Treinding";
+    }
+
+    @Override
+    public UrlIdHandler getUrlIdHandler() {
+        return new YoutubeTrendingUrlIdHandler();
+    }
+
+    @Override
+    public ListExtractor.NextItemsResult getNextStreams() {
+        return null;
+    }
+
+    @Override
+    public StreamInfoItemCollector getStreams() {
+        return null;
+    }
+}

src/main/java/org/schabi/newpipe/extractor/services/youtube/YoutubeTrendingUrlIdHandler.java

@@ -0,0 +1,45 @@
+package org.schabi.newpipe.extractor.services.youtube;
+
+/*
+ * Created by Christian Schabesberger on 12.08.17.
+ *
+ * Copyright (C) Christian Schabesberger 2017 <chris.schabesberger@mailbox.org>
+ * YoutubeTrendingUrlIdHandler.java is part of NewPipe.
+ *
+ * NewPipe is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * NewPipe is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with NewPipe.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import org.schabi.newpipe.extractor.UrlIdHandler;
+
+public class YoutubeTrendingUrlIdHandler implements UrlIdHandler {
+
+    public String getUrl(String id) {
+        return "https://www.youtube.com/feed/trending";
+    }
+
+    @Override
+    public String getId(String url) {
+        return "Trending";
+    }
+
+    @Override
+    public String cleanUrl(String url) {
+        return getUrl("");
+    }
+
+    @Override
+    public boolean acceptUrl(String url) {
+        return url.contains("feed/treinding");
+    }
+}