2 * Copyright © 2019 Soren Stoutner <soren@stoutner.com>.
4 * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
6 * Privacy Browser is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * Privacy Browser is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Privacy Browser. If not, see <http://www.gnu.org/licenses/>.
21 * This file is a modified version of <https://android.googlesource.com/platform/packages/apps/Camera/+/master/src/com/android/camera/ui/CheckedLinearLayout.java>.
23 * The original licensing information is below.
25 * Copyright (C) 2012 The Android Open Source Project
27 * Licensed under the Apache License, Version 2.0 (the "License");
28 * you may not use this file except in compliance with the License.
29 * You may obtain a copy of the License at
31 * http://www.apache.org/licenses/LICENSE-2.0
33 * Unless required by applicable law or agreed to in writing, software
34 * distributed under the License is distributed on an "AS IS" BASIS,
35 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
36 * See the License for the specific language governing permissions and
37 * limitations under the License.
40 package com.stoutner.privacybrowser.views;
42 import android.content.Context;
43 import android.util.AttributeSet;
44 import android.view.View;
45 import android.widget.Checkable;
46 import android.widget.LinearLayout;
48 import androidx.annotation.Nullable;
50 public class CheckedLinearLayout extends LinearLayout implements Checkable {
51 private boolean isCurrentlyChecked;
52 private static final int[] CHECKED_STATE_SET = {
53 android.R.attr.state_checked
56 public CheckedLinearLayout(Context context) {
57 // Run the default commands.
61 public CheckedLinearLayout(Context context, @Nullable AttributeSet attributeSet) {
62 // Run the default commands.
63 super(context, attributeSet);
66 public CheckedLinearLayout(Context context, @Nullable AttributeSet attributeSet, int defaultStyleAttribute) {
67 // Run the default commands.
68 super(context, attributeSet, defaultStyleAttribute);
71 /* This constructor can only be added once the minimum API >= 21.
72 public CheckedLinearLayout(Context context, @Nullable AttributeSet attributeSet, int defaultStyleAttribute, int defaultStyleResource) {
73 // Run the default commands.
74 super(context, attributeSet, defaultStyleAttribute, defaultStyleResource);
78 public boolean isChecked() {
79 // Return the checked status.
80 return isCurrentlyChecked;
84 public void setChecked(boolean checked) {
85 // Only process the command if a change is requested.
86 if (isCurrentlyChecked != checked) {
87 // Update the is currently checked tracker.
88 isCurrentlyChecked = checked;
90 // Refresh the drawable state.
91 refreshDrawableState();
93 // Propagate the checked status to the child views.
94 for (int i = 0; i < getChildCount(); i++) {
95 // Get a handle for the child view.
96 View childView = getChildAt(i);
98 // Propagate the checked status if the child view is checkable.
99 if (childView instanceof Checkable) {
100 // Cast the child view to `Checkable`.
101 Checkable checkableChildView = (Checkable) childView;
103 // Set the checked status.
104 checkableChildView.setChecked(checked);
111 public void toggle() {
113 setChecked(!isCurrentlyChecked);
117 public int[] onCreateDrawableState(int extraSpace) {
118 final int[] drawableState = super.onCreateDrawableState(extraSpace + 1);
120 if (isCurrentlyChecked) {
121 mergeDrawableStates(drawableState, CHECKED_STATE_SET);
124 return drawableState;