arangelov | 38a6fce | 2019-12-02 18:21:22 +0000 | [diff] [blame] | 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 | package com.android.internal.app; |
| 17 | import android.annotation.IntDef; |
| 18 | import android.content.Context; |
| 19 | import android.os.UserHandle; |
| 20 | import android.view.View; |
| 21 | import android.view.ViewGroup; |
| 22 | |
| 23 | import com.android.internal.annotations.VisibleForTesting; |
| 24 | import com.android.internal.widget.PagerAdapter; |
| 25 | |
| 26 | import com.android.internal.util.Preconditions; |
| 27 | import com.android.internal.widget.ViewPager; |
| 28 | |
| 29 | /** |
| 30 | * Skeletal {@link PagerAdapter} implementation of a work or personal profile page for |
| 31 | * intent resolution (including share sheet). |
| 32 | */ |
| 33 | public abstract class AbstractMultiProfilePagerAdapter extends PagerAdapter { |
| 34 | |
| 35 | static final int PROFILE_PERSONAL = 0; |
| 36 | static final int PROFILE_WORK = 1; |
| 37 | @IntDef({PROFILE_PERSONAL, PROFILE_WORK}) |
| 38 | @interface Profile {} |
| 39 | |
| 40 | private final Context mContext; |
| 41 | private int mCurrentPage; |
| 42 | |
| 43 | AbstractMultiProfilePagerAdapter(Context context, int currentPage) { |
| 44 | mContext = Preconditions.checkNotNull(context); |
| 45 | mCurrentPage = currentPage; |
| 46 | } |
| 47 | |
| 48 | Context getContext() { |
| 49 | return mContext; |
| 50 | } |
| 51 | |
| 52 | /** |
| 53 | * Sets this instance of this class as {@link ViewPager}'s {@link PagerAdapter} and sets |
| 54 | * an {@link ViewPager.OnPageChangeListener} where it keeps track of the currently displayed |
| 55 | * page and rebuilds the list. |
| 56 | */ |
| 57 | void setupViewPager(ViewPager viewPager) { |
| 58 | viewPager.setCurrentItem(mCurrentPage); |
| 59 | viewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() { |
| 60 | @Override |
| 61 | public void onPageSelected(int position) { |
| 62 | mCurrentPage = position; |
| 63 | getCurrentListAdapter().rebuildList(); |
| 64 | } |
| 65 | }); |
| 66 | viewPager.setAdapter(this); |
| 67 | } |
| 68 | |
| 69 | @Override |
| 70 | public ViewGroup instantiateItem(ViewGroup container, int position) { |
| 71 | final ProfileDescriptor profileDescriptor = getItem(position); |
| 72 | setupListAdapter(position); |
| 73 | container.addView(profileDescriptor.rootView); |
| 74 | return profileDescriptor.rootView; |
| 75 | } |
| 76 | |
| 77 | @Override |
| 78 | public void destroyItem(ViewGroup container, int position, Object view) { |
| 79 | container.removeView((View) view); |
| 80 | } |
| 81 | |
| 82 | @Override |
| 83 | public int getCount() { |
| 84 | return getItemCount(); |
| 85 | } |
| 86 | |
| 87 | protected int getCurrentPage() { |
| 88 | return mCurrentPage; |
| 89 | } |
| 90 | |
| 91 | UserHandle getCurrentUserHandle() { |
| 92 | return getCurrentListAdapter().mResolverListController.getUserHandle(); |
| 93 | } |
| 94 | |
| 95 | @Override |
| 96 | public boolean isViewFromObject(View view, Object object) { |
| 97 | return view == object; |
| 98 | } |
| 99 | |
| 100 | @Override |
| 101 | public CharSequence getPageTitle(int position) { |
| 102 | return null; |
| 103 | } |
| 104 | |
| 105 | /** |
| 106 | * Returns the {@link ProfileDescriptor} relevant to the given <code>pageIndex</code>. |
| 107 | * <ul> |
| 108 | * <li>For a device with only one user, <code>pageIndex</code> value of |
| 109 | * <code>0</code> would return the personal profile {@link ProfileDescriptor}.</li> |
| 110 | * <li>For a device with a work profile, <code>pageIndex</code> value of <code>0</code> would |
| 111 | * return the personal profile {@link ProfileDescriptor}, and <code>pageIndex</code> value of |
| 112 | * <code>1</code> would return the work profile {@link ProfileDescriptor}.</li> |
| 113 | * </ul> |
| 114 | */ |
| 115 | abstract ProfileDescriptor getItem(int pageIndex); |
| 116 | |
| 117 | /** |
| 118 | * Returns the number of {@link ProfileDescriptor} objects. |
| 119 | * <p>For a normal consumer device with only one user returns <code>1</code>. |
| 120 | * <p>For a device with a work profile returns <code>2</code>. |
| 121 | */ |
| 122 | abstract int getItemCount(); |
| 123 | |
| 124 | /** |
| 125 | * Responsible for assigning an adapter to the list view for the relevant page, specified by |
| 126 | * <code>pageIndex</code>, and other list view-related initialization procedures. |
| 127 | */ |
| 128 | abstract void setupListAdapter(int pageIndex); |
| 129 | |
| 130 | /** |
| 131 | * Returns the adapter of the list view for the relevant page specified by |
| 132 | * <code>pageIndex</code>. |
| 133 | * <p>This method is meant to be implemented with an implementation-specific return type |
| 134 | * depending on the adapter type. |
| 135 | */ |
| 136 | abstract Object getAdapterForIndex(int pageIndex); |
| 137 | |
| 138 | @VisibleForTesting |
| 139 | public abstract ResolverListAdapter getCurrentListAdapter(); |
| 140 | |
| 141 | abstract Object getCurrentRootAdapter(); |
| 142 | |
| 143 | abstract ViewGroup getCurrentAdapterView(); |
| 144 | |
| 145 | protected class ProfileDescriptor { |
| 146 | final ViewGroup rootView; |
| 147 | ProfileDescriptor(ViewGroup rootView) { |
| 148 | this.rootView = rootView; |
| 149 | } |
| 150 | } |
| 151 | } |