| /* |
| * Copyright (C) 2015 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.android.messaging.ui; |
| |
| import android.view.Gravity; |
| import android.view.View; |
| import android.view.ViewPropertyAnimator; |
| |
| import com.google.common.base.Preconditions; |
| |
| /** |
| * An interface that defines how a component can be animated with an {@link SnackBar}. |
| */ |
| public interface SnackBarInteraction { |
| /** |
| * Returns the animator that will be run in reaction to the given SnackBar being shown. |
| * |
| * Implementations may return null here if it determines that the given SnackBar does not need |
| * to animate this component. |
| */ |
| ViewPropertyAnimator animateOnSnackBarShow(SnackBar snackBar); |
| |
| /** |
| * Returns the animator that will be run in reaction to the given SnackBar being dismissed. |
| * |
| * Implementations may return null here if it determines that the given SnackBar does not need |
| * to animate this component. |
| */ |
| ViewPropertyAnimator animateOnSnackBarDismiss(SnackBar snackBar); |
| |
| /** |
| * A basic implementation of {@link SnackBarInteraction} that assumes that the |
| * {@link SnackBar} is always shown with {@link Gravity#BOTTOM} and that the provided View will |
| * always need to be translated up to make room for the SnackBar. |
| */ |
| public static class BasicSnackBarInteraction implements SnackBarInteraction { |
| private final View mView; |
| |
| public BasicSnackBarInteraction(final View view) { |
| mView = Preconditions.checkNotNull(view); |
| } |
| |
| @Override |
| public ViewPropertyAnimator animateOnSnackBarShow(final SnackBar snackBar) { |
| final View rootView = snackBar.getRootView(); |
| return mView.animate().translationY(-rootView.getMeasuredHeight()); |
| } |
| |
| @Override |
| public ViewPropertyAnimator animateOnSnackBarDismiss(final SnackBar snackBar) { |
| return mView.animate().translationY(0); |
| } |
| } |
| } |