1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.example.android.support.design.widget;
18
19
20import android.os.Bundle;
21import android.view.View;
22import android.widget.Button;
23
24import androidx.annotation.NonNull;
25import androidx.annotation.Nullable;
26
27import com.example.android.support.design.R;
28import com.google.android.material.bottomsheet.BottomSheetBehavior;
29
30
31/**
32 * This demonstrates usage of {@link BottomSheetBehavior} with a FAB anchored to it.
33 */
34public class BottomSheetWithFab extends BottomSheetUsageBase {
35
36    private Button mToggle;
37
38    private View.OnClickListener mOnClickListener = new View.OnClickListener() {
39        @Override
40        public void onClick(View v) {
41            if (v.getId() == R.id.toggle && mBehavior != null) {
42                mToggle.setEnabled(false);
43                if (mBehavior.getState() == BottomSheetBehavior.STATE_HIDDEN) {
44                    mBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
45                } else {
46                    mBehavior.setState(BottomSheetBehavior.STATE_HIDDEN);
47                }
48            }
49        }
50    };
51
52    @Override
53    protected int getLayoutId() {
54        return R.layout.design_bottom_sheet_with_fab;
55    }
56
57    @Override
58    protected void onCreate(@Nullable Bundle savedInstanceState) {
59        super.onCreate(savedInstanceState);
60        mToggle = findViewById(R.id.toggle);
61        mToggle.setOnClickListener(mOnClickListener);
62        mBehavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
63            @Override
64            public void onStateChanged(@NonNull View bottomSheet,
65                    @BottomSheetBehavior.State int newState) {
66                switch (newState) {
67                    case BottomSheetBehavior.STATE_HIDDEN:
68                        mToggle.setText(R.string.bottomsheet_show);
69                        mToggle.setEnabled(true);
70                        break;
71                    case BottomSheetBehavior.STATE_EXPANDED:
72                    case BottomSheetBehavior.STATE_COLLAPSED:
73                        mToggle.setText(R.string.bottomsheet_hide);
74                        mToggle.setEnabled(true);
75                        break;
76                }
77            }
78
79            @Override
80            public void onSlide(@NonNull View bottomSheet, float slideOffset) {
81            }
82        });
83    }
84
85}
86