1 /* 2 * Copyright (C) 2019 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.systemui.globalactions; 18 19 import android.content.Context; 20 import android.text.TextUtils; 21 import android.util.AttributeSet; 22 import android.view.View; 23 import android.view.ViewGroup; 24 25 import com.android.internal.annotations.VisibleForTesting; 26 import com.android.systemui.HardwareBgDrawable; 27 import com.android.systemui.MultiListLayout; 28 import com.android.systemui.R; 29 import com.android.systemui.util.leak.RotationUtils; 30 31 import java.util.Locale; 32 33 /** 34 * Grid-based implementation of the button layout created by the global actions dialog. 35 */ 36 public abstract class GlobalActionsLayout extends MultiListLayout { 37 38 boolean mBackgroundsSet; 39 GlobalActionsLayout(Context context, AttributeSet attrs)40 public GlobalActionsLayout(Context context, AttributeSet attrs) { 41 super(context, attrs); 42 } 43 setBackgrounds()44 private void setBackgrounds() { 45 int gridBackgroundColor = getResources().getColor( 46 R.color.global_actions_grid_background, null); 47 int separatedBackgroundColor = getResources().getColor( 48 R.color.global_actions_separated_background, null); 49 HardwareBgDrawable listBackground = new HardwareBgDrawable(true, true, getContext()); 50 HardwareBgDrawable separatedBackground = new HardwareBgDrawable(true, true, getContext()); 51 listBackground.setTint(gridBackgroundColor); 52 separatedBackground.setTint(separatedBackgroundColor); 53 getListView().setBackground(listBackground); 54 getSeparatedView().setBackground(separatedBackground); 55 } 56 57 @Override onMeasure(int widthMeasureSpec, int heightMeasureSpec)58 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 59 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 60 61 // backgrounds set only once, the first time onMeasure is called after inflation 62 if (getListView() != null && !mBackgroundsSet) { 63 setBackgrounds(); 64 mBackgroundsSet = true; 65 } 66 } 67 addToListView(View v, boolean reverse)68 protected void addToListView(View v, boolean reverse) { 69 if (reverse) { 70 getListView().addView(v, 0); 71 } else { 72 getListView().addView(v); 73 } 74 } 75 addToSeparatedView(View v, boolean reverse)76 protected void addToSeparatedView(View v, boolean reverse) { 77 if (reverse) { 78 getSeparatedView().addView(v, 0); 79 } else { 80 getSeparatedView().addView(v); 81 } 82 } 83 84 @VisibleForTesting getCurrentLayoutDirection()85 protected int getCurrentLayoutDirection() { 86 return TextUtils.getLayoutDirectionFromLocale(Locale.getDefault()); 87 } 88 89 @VisibleForTesting getCurrentRotation()90 protected int getCurrentRotation() { 91 return RotationUtils.getRotation(mContext); 92 } 93 94 /** 95 * Determines whether the ListGridLayout should reverse the ordering of items within sublists. 96 * Used for RTL languages to ensure that items appear in the same positions, without having to 97 * override layoutDirection, which breaks Talkback ordering. 98 */ shouldReverseListItems()99 protected abstract boolean shouldReverseListItems(); 100 101 @Override onUpdateList()102 public void onUpdateList() { 103 super.onUpdateList(); 104 105 ViewGroup separatedView = getSeparatedView(); 106 ViewGroup listView = getListView(); 107 108 for (int i = 0; i < mAdapter.getCount(); i++) { 109 // generate the view item 110 View v; 111 boolean separated = mAdapter.shouldBeSeparated(i); 112 if (separated) { 113 v = mAdapter.getView(i, null, separatedView); 114 } else { 115 v = mAdapter.getView(i, null, listView); 116 } 117 if (separated) { 118 addToSeparatedView(v, false); 119 } else { 120 addToListView(v, shouldReverseListItems()); 121 } 122 } 123 } 124 125 @Override getSeparatedView()126 protected ViewGroup getSeparatedView() { 127 return findViewById(R.id.separated_button); 128 } 129 130 @Override getListView()131 protected ViewGroup getListView() { 132 return findViewById(android.R.id.list); 133 } 134 getWrapper()135 protected View getWrapper() { 136 return getChildAt(0); 137 } 138 139 /** 140 * Not used in this implementation of the Global Actions Menu, but necessary for some others. 141 */ 142 @Override setDivisionView(View v)143 public void setDivisionView(View v) { 144 // do nothing 145 } 146 } 147