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.systemui.tuner; 17 18 import android.app.Activity; 19 import android.app.Fragment; 20 import android.app.FragmentTransaction; 21 import android.os.Bundle; 22 import android.util.Log; 23 import android.view.MenuItem; 24 import android.view.Window; 25 import android.view.WindowManager; 26 import android.widget.Toolbar; 27 28 import androidx.preference.Preference; 29 import androidx.preference.PreferenceFragment; 30 import androidx.preference.PreferenceScreen; 31 32 import com.android.systemui.Dependency; 33 import com.android.systemui.R; 34 import com.android.systemui.fragments.FragmentService; 35 36 public class TunerActivity extends Activity implements 37 PreferenceFragment.OnPreferenceStartFragmentCallback, 38 PreferenceFragment.OnPreferenceStartScreenCallback { 39 40 private static final String TAG_TUNER = "tuner"; 41 onCreate(Bundle savedInstanceState)42 protected void onCreate(Bundle savedInstanceState) { 43 super.onCreate(savedInstanceState); 44 45 getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS); 46 requestWindowFeature(Window.FEATURE_NO_TITLE); 47 setContentView(R.layout.tuner_activity); 48 Toolbar toolbar = findViewById(R.id.action_bar); 49 if (toolbar != null) { 50 setActionBar(toolbar); 51 } 52 53 Dependency.initDependencies(this); 54 55 if (getFragmentManager().findFragmentByTag(TAG_TUNER) == null) { 56 final String action = getIntent().getAction(); 57 boolean showDemoMode = action != null && action.equals( 58 "com.android.settings.action.DEMO_MODE"); 59 final PreferenceFragment fragment = showDemoMode ? new DemoModeFragment() 60 : new TunerFragment(); 61 getFragmentManager().beginTransaction().replace(R.id.content_frame, 62 fragment, TAG_TUNER).commit(); 63 } 64 } 65 66 @Override onDestroy()67 protected void onDestroy() { 68 super.onDestroy(); 69 Dependency.destroy(FragmentService.class, s -> s.destroyAll()); 70 Dependency.clearDependencies(); 71 } 72 73 @Override onMenuItemSelected(int featureId, MenuItem item)74 public boolean onMenuItemSelected(int featureId, MenuItem item) { 75 if (item.getItemId() == android.R.id.home) { 76 onBackPressed(); 77 return true; 78 } 79 return super.onMenuItemSelected(featureId, item); 80 } 81 82 @Override onBackPressed()83 public void onBackPressed() { 84 if (!getFragmentManager().popBackStackImmediate()) { 85 super.onBackPressed(); 86 } 87 } 88 89 @Override onPreferenceStartFragment(PreferenceFragment caller, Preference pref)90 public boolean onPreferenceStartFragment(PreferenceFragment caller, Preference pref) { 91 try { 92 Class<?> cls = Class.forName(pref.getFragment()); 93 Fragment fragment = (Fragment) cls.newInstance(); 94 final Bundle b = new Bundle(1); 95 b.putString(PreferenceFragment.ARG_PREFERENCE_ROOT, pref.getKey()); 96 fragment.setArguments(b); 97 FragmentTransaction transaction = getFragmentManager().beginTransaction(); 98 setTitle(pref.getTitle()); 99 transaction.replace(R.id.content_frame, fragment); 100 transaction.addToBackStack("PreferenceFragment"); 101 transaction.commit(); 102 return true; 103 } catch (ClassNotFoundException | InstantiationException | IllegalAccessException e) { 104 Log.d("TunerActivity", "Problem launching fragment", e); 105 return false; 106 } 107 } 108 109 @Override onPreferenceStartScreen(PreferenceFragment caller, PreferenceScreen pref)110 public boolean onPreferenceStartScreen(PreferenceFragment caller, PreferenceScreen pref) { 111 FragmentTransaction transaction = getFragmentManager().beginTransaction(); 112 SubSettingsFragment fragment = new SubSettingsFragment(); 113 final Bundle b = new Bundle(1); 114 b.putString(PreferenceFragment.ARG_PREFERENCE_ROOT, pref.getKey()); 115 fragment.setArguments(b); 116 fragment.setTargetFragment(caller, 0); 117 transaction.replace(R.id.content_frame, fragment); 118 transaction.addToBackStack("PreferenceFragment"); 119 transaction.commit(); 120 return true; 121 } 122 123 public static class SubSettingsFragment extends PreferenceFragment { 124 private PreferenceScreen mParentScreen; 125 126 @Override onCreatePreferences(Bundle savedInstanceState, String rootKey)127 public void onCreatePreferences(Bundle savedInstanceState, String rootKey) { 128 mParentScreen = 129 (PreferenceScreen) ((PreferenceFragment) getTargetFragment()) 130 .getPreferenceScreen().findPreference(rootKey); 131 PreferenceScreen screen = 132 getPreferenceManager().createPreferenceScreen( 133 getPreferenceManager().getContext()); 134 setPreferenceScreen(screen); 135 // Copy all the preferences over to this screen so they go into the attached state. 136 while (mParentScreen.getPreferenceCount() > 0) { 137 Preference p = mParentScreen.getPreference(0); 138 mParentScreen.removePreference(p); 139 screen.addPreference(p); 140 } 141 } 142 143 @Override onDestroy()144 public void onDestroy() { 145 super.onDestroy(); 146 // Copy all the preferences back so we don't lose them. 147 PreferenceScreen screen = getPreferenceScreen(); 148 while (screen.getPreferenceCount() > 0) { 149 Preference p = screen.getPreference(0); 150 screen.removePreference(p); 151 mParentScreen.addPreference(p); 152 } 153 } 154 } 155 156 } 157