1/*
2 * Copyright (C) 2015 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.android.deskclock.widget.toast;
18
19import android.content.Context;
20import android.support.design.widget.CoordinatorLayout;
21import android.support.design.widget.Snackbar;
22import android.util.AttributeSet;
23import android.view.View;
24import android.widget.LinearLayout;
25
26/**
27 * LinearLayout Behavior that slides up and down when snackbar appears/disappears.
28 */
29public final class LinearLayoutWithSnackbarBehavior
30        extends CoordinatorLayout.Behavior<LinearLayout> {
31
32    public LinearLayoutWithSnackbarBehavior(Context context, AttributeSet attrs) {}
33
34    @Override
35    public boolean layoutDependsOn(CoordinatorLayout parent, LinearLayout child, View dependency) {
36        return dependency instanceof Snackbar.SnackbarLayout;
37    }
38
39    @Override
40    public boolean onDependentViewChanged(CoordinatorLayout parent, LinearLayout child,
41            View dependency) {
42        final float translationY = Math.min(0,
43                dependency.getTranslationY() - dependency.getHeight());
44        child.setTranslationY(translationY);
45        return true;
46    }
47}
48