1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
5 * in compliance with the License. You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software distributed under the License
10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
11 * or implied. See the License for the specific language governing permissions and limitations under
12 * the License.
13 */
14package com.example.android.leanback;
15
16import android.content.Context;
17import android.content.Intent;
18import android.os.Bundle;
19import android.os.Handler;
20import android.util.Log;
21import android.view.View;
22
23import androidx.core.content.res.ResourcesCompat;
24import androidx.leanback.widget.ArrayObjectAdapter;
25import androidx.leanback.widget.OnItemViewClickedListener;
26import androidx.leanback.widget.OnItemViewSelectedListener;
27import androidx.leanback.widget.Presenter;
28import androidx.leanback.widget.Row;
29import androidx.leanback.widget.RowPresenter;
30import androidx.leanback.widget.VerticalGridPresenter;
31
32public class VerticalGridFragment extends androidx.leanback.app.VerticalGridFragment {
33    private static final String TAG = "leanback.VerticalGridFragment";
34
35    private static final int NUM_COLUMNS = 3;
36    private static final int NUM_ITEMS = 50;
37    private static final int HEIGHT = 200;
38    private static final boolean TEST_ENTRANCE_TRANSITION = true;
39
40    private static class Adapter extends ArrayObjectAdapter {
41        public Adapter(StringPresenter presenter) {
42            super(presenter);
43        }
44        public void callNotifyChanged() {
45            super.notifyChanged();
46        }
47    }
48    private Adapter mAdapter;
49
50    @Override
51    public void onCreate(Bundle savedInstanceState) {
52        Log.i(TAG, "onCreate");
53        super.onCreate(savedInstanceState);
54
55        final Context context = getActivity();
56        setBadgeDrawable(ResourcesCompat.getDrawable(context.getResources(),
57                R.drawable.ic_title, context.getTheme()));
58        setTitle("Leanback Vertical Grid Demo");
59
60        setupFragment();
61        if (TEST_ENTRANCE_TRANSITION) {
62            // don't run entrance transition if fragment is restored.
63            if (savedInstanceState == null) {
64                prepareEntranceTransition();
65            }
66        }
67        // simulates in a real world use case  data being loaded two seconds later
68        new Handler().postDelayed(new Runnable() {
69            @Override
70            public void run() {
71                loadData();
72                startEntranceTransition();
73            }
74        }, 2000);
75    }
76
77    private void loadData() {
78        for (int i = 0; i < NUM_ITEMS; i++) {
79            mAdapter.add(Integer.toString(i));
80        }
81    }
82
83    private void setupFragment() {
84        VerticalGridPresenter gridPresenter = new VerticalGridPresenter();
85        gridPresenter.setNumberOfColumns(NUM_COLUMNS);
86        setGridPresenter(gridPresenter);
87
88        mAdapter = new Adapter(new StringPresenter());
89        setAdapter(mAdapter);
90
91        setOnItemViewSelectedListener(new OnItemViewSelectedListener() {
92            @Override
93            public void onItemSelected(Presenter.ViewHolder itemViewHolder, Object item,
94                    RowPresenter.ViewHolder rowViewHolder, Row row) {
95                Log.i(TAG, "onItemSelected: " + item + " row " + row);
96            }
97        });
98
99        setOnItemViewClickedListener(new OnItemViewClickedListener() {
100            @Override
101            public void onItemClicked(Presenter.ViewHolder itemViewHolder, Object item,
102                    RowPresenter.ViewHolder rowViewHolder, Row row) {
103                Log.i(TAG, "onItemClicked: " + item + " row " + row);
104                mAdapter.callNotifyChanged();
105            }
106        });
107        setOnSearchClickedListener(new View.OnClickListener() {
108            @Override
109            public void onClick(View view) {
110                Intent intent = new Intent(getActivity(), SearchActivity.class);
111                startActivity(intent);
112            }
113        });
114    }
115}
116