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 17 package com.android.permissioncontroller.permission.ui.handheld; 18 19 import android.app.ActionBar; 20 import android.os.Bundle; 21 import android.view.LayoutInflater; 22 import android.view.Menu; 23 import android.view.MenuInflater; 24 import android.view.View; 25 import android.view.ViewGroup; 26 import android.view.animation.Animation; 27 import android.view.animation.Animation.AnimationListener; 28 import android.view.animation.AnimationUtils; 29 import android.widget.TextView; 30 31 import androidx.annotation.NonNull; 32 import androidx.preference.PreferenceFragmentCompat; 33 import androidx.preference.PreferenceScreen; 34 import androidx.recyclerview.widget.RecyclerView; 35 36 import com.android.modules.utils.build.SdkLevel; 37 import com.android.permissioncontroller.DeviceUtils; 38 import com.android.permissioncontroller.R; 39 import com.android.permissioncontroller.permission.ui.handheld.v35.SectionPreferenceGroupAdapter; 40 import com.android.permissioncontroller.permission.utils.Utils; 41 import com.android.settingslib.widget.ActionBarShadowController; 42 43 public abstract class PermissionsFrameFragment extends PreferenceFragmentCompat { 44 private static final String LOG_TAG = PermissionsFrameFragment.class.getSimpleName(); 45 46 static final int MENU_ALL_PERMS = Menu.FIRST + 1; 47 public static final int MENU_SHOW_SYSTEM = Menu.FIRST + 2; 48 public static final int MENU_HIDE_SYSTEM = Menu.FIRST + 3; 49 static final int MENU_ALLOW_RESTRICTED_SETTINGS = Menu.FIRST + 4; 50 51 private ViewGroup mPreferencesContainer; 52 53 private TextView mEmptyView; 54 private View mLoadingView; 55 private View mProgressHeader; 56 private View mProgressView; 57 private ViewGroup mPrefsView; 58 private boolean mIsLoading; 59 60 protected boolean mUseShadowController = true; 61 62 /** 63 * Returns the view group that holds the preferences objects. This will 64 * only be set after {@link #onCreateView} has been called. 65 */ getPreferencesContainer()66 protected final ViewGroup getPreferencesContainer() { 67 return mPreferencesContainer; 68 } 69 70 @Override onCreateOptionsMenu(Menu menu, MenuInflater inflater)71 public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { 72 super.onCreateOptionsMenu(menu, inflater); 73 74 if (!SdkLevel.isAtLeastS()) { 75 Utils.prepareSearchMenuItem(menu, requireContext()); 76 } 77 } 78 79 @Override onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)80 public View onCreateView(LayoutInflater inflater, ViewGroup container, 81 Bundle savedInstanceState) { 82 ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.permissions_frame, container, 83 false); 84 mPrefsView = (ViewGroup) rootView.findViewById(R.id.prefs_container); 85 if (mPrefsView == null) { 86 mPrefsView = rootView; 87 } 88 mEmptyView = mPrefsView.findViewById(R.id.no_permissions); 89 mEmptyView.setText(getEmptyViewString()); 90 mLoadingView = rootView.findViewById(R.id.loading_container); 91 mPreferencesContainer = (ViewGroup) super.onCreateView( 92 inflater, mPrefsView, savedInstanceState); 93 setLoading(mIsLoading, false, true /* force */); 94 mPrefsView.addView(mPreferencesContainer); 95 mProgressHeader = rootView.requireViewById( 96 com.android.settingslib.widget.progressbar.R.id.progress_bar_animation); 97 mProgressView = rootView.requireViewById( 98 com.android.settingslib.widget.progressbar.R.id.progress_bar_background); 99 setProgressBarVisible(false); 100 getListView().setFocusable(false); 101 return rootView; 102 } 103 104 @Override onStart()105 public void onStart() { 106 super.onStart(); 107 108 if (getListView() != null) { 109 ActionBar ab = getActivity().getActionBar(); 110 if (ab != null) { 111 ab.setElevation(0); 112 } 113 if (mUseShadowController) { 114 ActionBarShadowController.attachToView(getActivity(), getLifecycle(), 115 getListView()); 116 } 117 } 118 } 119 120 @Override onCreatePreferences(Bundle bundle, String s)121 public void onCreatePreferences(Bundle bundle, String s) { 122 // empty 123 } 124 125 @Override onCreateAdapter(@onNull PreferenceScreen preferenceScreen)126 public RecyclerView.Adapter onCreateAdapter(@NonNull PreferenceScreen preferenceScreen) { 127 if (SdkLevel.isAtLeastV() && DeviceUtils.isHandheld(requireContext())) { 128 return new SectionPreferenceGroupAdapter(preferenceScreen); 129 } else { 130 return super.onCreateAdapter(preferenceScreen); 131 } 132 } 133 setLoading(boolean loading, boolean animate)134 protected void setLoading(boolean loading, boolean animate) { 135 setLoading(loading, animate, false); 136 } 137 setLoading(boolean loading, boolean animate, boolean force)138 private void setLoading(boolean loading, boolean animate, boolean force) { 139 if (mIsLoading != loading || force) { 140 mIsLoading = loading; 141 if (getView() == null) { 142 // If there is no created view, there is no reason to animate. 143 animate = false; 144 } 145 if (mPrefsView != null) { 146 setViewShown(mPrefsView, !loading, animate); 147 } 148 if (mLoadingView != null) { 149 setViewShown(mLoadingView, loading, animate); 150 } 151 } 152 } 153 setProgressBarVisible(boolean visible)154 protected void setProgressBarVisible(boolean visible) { 155 mProgressHeader.setVisibility(visible ? View.VISIBLE : View.GONE); 156 mProgressView.setVisibility(visible ? View.VISIBLE : View.GONE); 157 } 158 159 /** 160 * Either show the empty view or the recycler view. To be called any time the adapter changes. 161 */ updateEmptyState()162 void updateEmptyState() { 163 RecyclerView prefs = getListView(); 164 165 // This might be called before onCreateView, hence emptyView and prefs can be null 166 if (mEmptyView != null && prefs != null) { 167 if (prefs.getAdapter() != null && prefs.getAdapter().getItemCount() != 0) { 168 mEmptyView.setVisibility(View.GONE); 169 prefs.setVisibility(View.VISIBLE); 170 } else { 171 mEmptyView.setVisibility(View.VISIBLE); 172 prefs.setVisibility(View.GONE); 173 } 174 } 175 } 176 177 @Override onBindPreferences()178 protected void onBindPreferences() { 179 super.onBindPreferences(); 180 181 RecyclerView.Adapter adapter = getListView().getAdapter(); 182 183 if (adapter != null) { 184 adapter.registerAdapterDataObserver( 185 new RecyclerView.AdapterDataObserver() { 186 @Override 187 public void onChanged() { 188 updateEmptyState(); 189 } 190 191 @Override 192 public void onItemRangeInserted(int positionStart, int itemCount) { 193 updateEmptyState(); 194 } 195 196 @Override 197 public void onItemRangeRemoved(int positionStart, int itemCount) { 198 updateEmptyState(); 199 } 200 }); 201 } 202 203 updateEmptyState(); 204 } 205 setViewShown(final View view, boolean shown, boolean animate)206 private void setViewShown(final View view, boolean shown, boolean animate) { 207 // Clear out previous animation listeners. 208 if (view.getAnimation() != null) { 209 view.getAnimation().setAnimationListener(null); 210 } 211 view.clearAnimation(); 212 if (animate) { 213 Animation animation = AnimationUtils.loadAnimation(getContext(), 214 shown ? android.R.anim.fade_in : android.R.anim.fade_out); 215 if (shown) { 216 view.setVisibility(View.VISIBLE); 217 } else { 218 animation.setAnimationListener(new AnimationListener() { 219 @Override 220 public void onAnimationStart(Animation animation) { 221 } 222 223 @Override 224 public void onAnimationRepeat(Animation animation) { 225 } 226 227 @Override 228 public void onAnimationEnd(Animation animation) { 229 view.setVisibility(View.INVISIBLE); 230 } 231 }); 232 } 233 view.startAnimation(animation); 234 } else { 235 view.setVisibility(shown ? View.VISIBLE : View.INVISIBLE); 236 } 237 } 238 239 /** 240 * @return the id of the string to display when there are no entries to show. 241 */ getEmptyViewString()242 public int getEmptyViewString() { 243 return R.string.no_permissions; 244 } 245 } 246