material-components_material-components-android/lib/java/com/google/android/material/backlayer/CollapsedBackLayerContents.java

/*
 * Copyright 2017 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.google.android.material.backlayer;

import android.annotation.TargetApi;
import android.content.Context;
import android.os.Build;
import android.support.annotation.AttrRes;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.annotation.StyleRes;
import android.util.AttributeSet;
import android.widget.FrameLayout;

/**
 * Contains the collapsed version of the backlayer contents, its initial measurements are what will
 * be considered the collapsed measurements of the BackLayer.
 *
 * <p>This must be used only as a direct child to {@link BackLayerLayout}. BackLayerLayout uses this
 * to determine its minimum size, which describes the area of the back layer that is always exposed.
 *
 * <p>For more information on how to use it look at the {@link BackLayerLayout} javadoc.
 */
public class CollapsedBackLayerContents extends FrameLayout {

  public CollapsedBackLayerContents(@NonNull Context context) {
    super(context);
  }

  public CollapsedBackLayerContents(@NonNull Context context, @Nullable AttributeSet attrs) {
    super(context, attrs);
  }

  public CollapsedBackLayerContents(
      @NonNull Context context, @Nullable AttributeSet attrs, @AttrRes int defStyleAttr) {
    super(context, attrs, defStyleAttr);
  }

  @TargetApi(Build.VERSION_CODES.LOLLIPOP)
  public CollapsedBackLayerContents(
      @NonNull Context context,
      @Nullable AttributeSet attrs,
      @AttrRes int defStyleAttr,
      @StyleRes int defStyleRes) {
    super(context, attrs, defStyleAttr, defStyleRes);
  }
}