Adding search to Leanback demo

Change-Id: I054b64b7c3752bd6dbfdba2b26248222d7a678bd

samples/SupportLeanbackDemos/src/com/example/android/leanback/BrowseFragment.java

@@ -22,6 +22,7 @@ import android.support.v17.leanback.widget.ListRowPresenter;
 import android.support.v17.leanback.widget.OnItemClickedListener;
 import android.support.v17.leanback.widget.Row;
 import android.util.Log;
+import android.view.View;
 
 public class BrowseFragment extends android.support.v17.leanback.app.BrowseFragment {
     private static final String TAG = "leanback.BrowseFragment";
@@ -40,6 +41,14 @@ public class BrowseFragment extends android.support.v17.leanback.app.BrowseFragm
         p.setHeadersState(HEADERS_ENABLED);
         setBrowseParams(p);
 
+        setOnSearchClickedListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Intent intent = new Intent(getActivity(), SearchActivity.class);
+                startActivity(intent);
+            }
+        });
+
         setupRows();
         setOnItemClickedListener(new ItemClickedListener());
     }

samples/SupportLeanbackDemos/src/com/example/android/leanback/SearchActivity.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package com.example.android.leanback;
+
+import android.app.Activity;
+import android.os.Bundle;
+
+public class SearchActivity extends Activity
+{
+    /** Called when the activity is first created. */
+    @Override
+    public void onCreate(Bundle savedInstanceState)
+    {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.search);
+    }
+}

samples/SupportLeanbackDemos/src/com/example/android/leanback/SearchFragment.java

@@ -0,0 +1,85 @@
+package com.example.android.leanback;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.Handler;
+import android.support.v17.leanback.widget.ArrayObjectAdapter;
+import android.support.v17.leanback.widget.HeaderItem;
+import android.support.v17.leanback.widget.ListRow;
+import android.support.v17.leanback.widget.ListRowPresenter;
+import android.support.v17.leanback.widget.ObjectAdapter;
+import android.support.v17.leanback.widget.OnItemClickedListener;
+import android.support.v17.leanback.widget.Row;
+import android.text.TextUtils;
+import android.util.Log;
+
+public class SearchFragment extends android.support.v17.leanback.app.SearchFragment
+    implements android.support.v17.leanback.app.SearchFragment.SearchResultProvider {
+    private static final String TAG = "leanback.SearchFragment";
+    private static final int NUM_ROWS = 3;
+    private static final int SEARCH_DELAY_MS = 300;
+
+    private ArrayObjectAdapter mRowsAdapter;
+    private Handler mHandler = new Handler();
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        mRowsAdapter = new ArrayObjectAdapter(new ListRowPresenter());
+        setSearchResultProvider(this);
+        setOnItemClickedListener(new ItemClickedListener());
+    }
+
+    @Override
+    public ObjectAdapter getResultsAdapter() {
+        return mRowsAdapter;
+    }
+
+    @Override
+    public boolean onQueryTextChange(String newQuery) {
+        Log.i(TAG, String.format("Search Query Text Change %s", newQuery));
+        mRowsAdapter.clear();
+        if (!TextUtils.isEmpty(newQuery)) {
+            mHandler.removeCallbacks(mDelayedLoad);
+            mHandler.postDelayed(mDelayedLoad, SEARCH_DELAY_MS);
+        }
+        return true;
+    }
+
+    @Override
+    public boolean onQueryTextSubmit(String query) {
+        Log.i(TAG, String.format("Search Query Text Submit %s", query));
+        mRowsAdapter.clear();
+        if (!TextUtils.isEmpty(query)) {
+            mHandler.removeCallbacks(mDelayedLoad);
+            mHandler.postDelayed(mDelayedLoad, SEARCH_DELAY_MS);
+        }
+        return true;
+    }
+
+    private void loadRows() {
+        for (int i = 0; i < NUM_ROWS; ++i) {
+            ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter(new StringPresenter());
+            listRowAdapter.add("Hello world");
+            listRowAdapter.add("This is a test");
+            HeaderItem header = new HeaderItem(i, "Row " + i, null);
+            mRowsAdapter.add(new ListRow(header, listRowAdapter));
+        }
+    }
+
+    private Runnable mDelayedLoad = new Runnable() {
+        @Override
+        public void run() {
+            loadRows();
+        }
+    };
+    private final class ItemClickedListener implements OnItemClickedListener {
+        public void onItemClicked(Object item, Row row) {
+            // TODO: use a fragment transaction instead of launching a new
+            // activity
+            Intent intent = new Intent(getActivity(), DetailsActivity.class);
+            startActivity(intent);
+        }
+    }
+}