Jason Monk | 3a90d7c | 2015-06-10 11:03:06 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 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 | package com.android.settings; |
| 17 | |
| 18 | import android.content.Context; |
| 19 | import android.util.AttributeSet; |
| 20 | import android.util.TypedValue; |
| 21 | import android.view.View; |
| 22 | import android.widget.Checkable; |
| 23 | import android.widget.LinearLayout; |
| 24 | |
| 25 | public class CheckableLinearLayout extends LinearLayout implements Checkable { |
| 26 | |
| 27 | private boolean mChecked; |
| 28 | private float mDisabledAlpha; |
| 29 | |
| 30 | public CheckableLinearLayout(Context context, AttributeSet attrs) { |
| 31 | super(context, attrs); |
| 32 | TypedValue alpha = new TypedValue(); |
| 33 | context.getTheme().resolveAttribute(android.R.attr.disabledAlpha, alpha, true); |
| 34 | mDisabledAlpha = alpha.getFloat(); |
| 35 | } |
| 36 | |
| 37 | @Override |
| 38 | public void setEnabled(boolean enabled) { |
| 39 | super.setEnabled(enabled); |
| 40 | final int N = getChildCount(); |
| 41 | for (int i = 0; i < N; i++) { |
| 42 | getChildAt(i).setAlpha(enabled ? 1 : mDisabledAlpha); |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | @Override |
| 47 | public void setChecked(boolean checked) { |
| 48 | mChecked = checked; |
| 49 | updateChecked(); |
| 50 | } |
| 51 | |
| 52 | @Override |
| 53 | public boolean isChecked() { |
| 54 | return mChecked; |
| 55 | } |
| 56 | |
| 57 | @Override |
| 58 | public void toggle() { |
| 59 | setChecked(!mChecked); |
| 60 | } |
| 61 | |
| 62 | private void updateChecked() { |
| 63 | final int N = getChildCount(); |
| 64 | for (int i = 0; i < N; i++) { |
| 65 | View child = getChildAt(i); |
| 66 | if (child instanceof Checkable) { |
| 67 | ((Checkable) child).setChecked(mChecked); |
| 68 | } |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | } |