1 /* 2 * Copyright (C) 2023 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 17 package com.android.intentresolver.widget 18 19 import android.view.View 20 import androidx.recyclerview.widget.RecyclerView 21 22 internal val RecyclerView.areAllChildrenVisible: Boolean 23 get() { 24 val count = getChildCount() 25 if (count == 0) return true 26 val first = getChildAt(0) 27 val last = getChildAt(count - 1) 28 val itemCount = adapter?.itemCount ?: 0 29 return getChildAdapterPosition(first) == 0 && 30 getChildAdapterPosition(last) == itemCount - 1 && 31 isFullyVisible(first) && 32 isFullyVisible(last) 33 } 34 RecyclerViewnull35private fun RecyclerView.isFullyVisible(view: View): Boolean = 36 view.left >= paddingLeft && view.right <= width - paddingRight 37