Added suggestion to the searching

app/src/main/java/org/schabi/newpipe/SuggestionListAdapter.java

@@ -3,10 +3,10 @@ package org.schabi.newpipe;
 import android.content.Context;
 import android.database.Cursor;
 import android.database.MatrixCursor;
+import android.support.v4.widget.CursorAdapter;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.CursorAdapter;
 import android.widget.TextView;
 
 import java.util.ArrayList;

app/src/main/java/org/schabi/newpipe/VideoItemListActivity.java

@@ -3,6 +3,7 @@ package org.schabi.newpipe;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
+import android.os.Handler;
 import android.preference.PreferenceManager;
 import android.support.v4.app.NavUtils;
 import android.support.v7.app.AppCompatActivity;
@@ -14,10 +15,14 @@ import android.view.MenuItem;
 import android.view.View;
 import android.view.inputmethod.InputMethodManager;
 
-import java.util.ArrayList;
+import org.schabi.newpipe.extractor.ExtractionException;
-
+import org.schabi.newpipe.extractor.SearchEngine;
-import org.schabi.newpipe.extractor.VideoPreviewInfo;
 import org.schabi.newpipe.extractor.ServiceList;
+import org.schabi.newpipe.extractor.StreamingService;
+import org.schabi.newpipe.extractor.VideoPreviewInfo;
+
+import java.io.IOException;
+import java.util.ArrayList;
 
 /**
  * Copyright (C) Christian Schabesberger 2015 <chris.schabesberger@mailbox.org>
@@ -61,6 +66,11 @@ public class VideoItemListActivity extends AppCompatActivity
     private VideoItemDetailFragment videoFragment = null;
     private Menu menu = null;
 
+    private SuggestionListAdapter suggestionListAdapter;
+    private StreamingService streamingService;
+    private SuggestionSearchRunnable suggestionSearchRunnable;
+    private Thread searchThread;
+
     private class SearchVideoQueryListener implements SearchView.OnQueryTextListener {
 
         @Override
@@ -94,11 +104,70 @@ public class VideoItemListActivity extends AppCompatActivity
 
         @Override
         public boolean onQueryTextChange(String newText) {
+            searchSuggestions(newText);
             return true;
         }
 
     }
+    private class SearchSuggestionListener implements SearchView.OnSuggestionListener{
 
+        private SearchView searchView;
+
+        private SearchSuggestionListener(SearchView searchView) {
+            this.searchView = searchView;
+        }
+
+        @Override
+        public boolean onSuggestionSelect(int position) {
+            String suggestion = suggestionListAdapter.getSuggestion(position);
+            searchView.setQuery(suggestion,true);
+            return false;
+        }
+
+        @Override
+        public boolean onSuggestionClick(int position) {
+            String suggestion = suggestionListAdapter.getSuggestion(position);
+            searchView.setQuery(suggestion,true);
+            return false;
+        }
+    }
+
+    private class SuggestionResultRunnable implements Runnable{
+
+        private ArrayList<String>suggestions;
+
+        private SuggestionResultRunnable(ArrayList<String> suggestions) {
+            this.suggestions = suggestions;
+        }
+
+        @Override
+        public void run() {
+            suggestionListAdapter.updateAdapter(suggestions);
+        }
+    }
+
+    private class SuggestionSearchRunnable implements Runnable{
+        private final SearchEngine engine;
+        private final String query;
+        final Handler h = new Handler();
+
+        private SuggestionSearchRunnable(SearchEngine engine, String query) {
+            this.engine = engine;
+            this.query = query;
+        }
+
+        @Override
+        public void run() {
+            try {
+                ArrayList<String>suggestions = engine.suggestionList(query,new Downloader());
+                h.post(new SuggestionResultRunnable(suggestions));
+            } catch (ExtractionException e) {
+                e.printStackTrace();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+    }
     /**
      * Whether or not the activity is in two-pane mode, i.e. running on a tablet
      * device.
@@ -112,11 +181,12 @@ public class VideoItemListActivity extends AppCompatActivity
 
         //------ todo: remove this line when multiservice support is implemented ------
         currentStreamingServiceId = ServiceList.getIdOfService("Youtube");
+        streamingService=ServiceList.getService(currentStreamingServiceId);
         //-----------------------------------------------------------------------------
         //to solve issue 38
         listFragment = (VideoItemListFragment) getSupportFragmentManager()
                 .findFragmentById(R.id.videoitem_list);
-        listFragment.setStreamingService(ServiceList.getService(currentStreamingServiceId));
+        listFragment.setStreamingService(streamingService);
 
         Bundle arguments = getIntent().getExtras();
 
@@ -168,6 +238,9 @@ public class VideoItemListActivity extends AppCompatActivity
                 searchView.setIconifiedByDefault(false);
                 searchView.setIconified(false);
                 searchView.setOnQueryTextListener(new SearchVideoQueryListener());
+                suggestionListAdapter = new SuggestionListAdapter(this);
+                searchView.setSuggestionsAdapter(suggestionListAdapter);
+                searchView.setOnSuggestionListener(new SearchSuggestionListener(searchView));
             } else {
                 searchView.setVisibility(View.GONE);
             }
@@ -237,6 +310,9 @@ public class VideoItemListActivity extends AppCompatActivity
             searchView.setFocusable(false);
             searchView.setOnQueryTextListener(
                     new SearchVideoQueryListener());
+            suggestionListAdapter = new SuggestionListAdapter(this);
+            searchView.setSuggestionsAdapter(suggestionListAdapter);
+            searchView.setOnSuggestionListener(new SearchSuggestionListener(searchView));
 
         } else if (videoFragment != null){
             videoFragment.onCreateOptionsMenu(menu, inflater);
@@ -281,4 +357,12 @@ public class VideoItemListActivity extends AppCompatActivity
         outState.putString(QUERY, searchQuery);
         outState.putInt(STREAMING_SERVICE, currentStreamingServiceId);
     }
+
+    private void searchSuggestions(String query) {
+        suggestionSearchRunnable = new SuggestionSearchRunnable(streamingService.getSearchEngineInstance(),
+                query);
+        searchThread = new Thread(suggestionSearchRunnable);
+        searchThread.start();
+
+    }
 }