1 /* 2 * Copyright (C) 2022 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.launcher3.taskbar.navbutton 18 19 import android.content.res.Resources 20 import android.graphics.drawable.RotateDrawable 21 import android.view.ViewGroup 22 import android.widget.ImageView 23 import android.widget.LinearLayout 24 import com.android.launcher3.R 25 import com.android.launcher3.Utilities 26 import com.android.launcher3.taskbar.navbutton.NavButtonLayoutFactory.NavButtonLayoutter 27 28 /** 29 * Meant to be a simple container for data subclasses will need 30 * 31 * Assumes that the 3 navigation buttons (back/home/recents) have already been added to 32 * [navButtonContainer] 33 * 34 * @property navButtonContainer ViewGroup that holds the 3 navigation buttons. 35 * @property endContextualContainer ViewGroup that holds the end contextual button (ex, IME 36 * dismiss). 37 * @property startContextualContainer ViewGroup that holds the start contextual button (ex, A11y). 38 */ 39 abstract class AbstractNavButtonLayoutter( 40 val resources: Resources, 41 val navButtonContainer: LinearLayout, 42 protected val endContextualContainer: ViewGroup, 43 protected val startContextualContainer: ViewGroup 44 ) : NavButtonLayoutter { 45 protected val homeButton: ImageView? = navButtonContainer.findViewById(R.id.home) 46 protected val recentsButton: ImageView? = navButtonContainer.findViewById(R.id.recent_apps) 47 protected val backButton: ImageView? = navButtonContainer.findViewById(R.id.back) 48 49 init { 50 // setup back button drawable 51 if (backButton != null) { 52 val rotateDrawable = RotateDrawable() 53 rotateDrawable.drawable = backButton.context?.getDrawable(R.drawable.ic_sysbar_back) 54 rotateDrawable.fromDegrees = 0f 55 rotateDrawable.toDegrees = if (Utilities.isRtl(backButton.resources)) 90f else -90f 56 backButton.setImageDrawable(rotateDrawable) 57 } 58 } 59 } 60