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.Fragment; 19 import android.app.FragmentTransaction; 20 import android.os.Bundle; 21 import android.support.v14.preference.PreferenceFragment; 22 import android.support.v7.preference.Preference; 23 import android.support.v7.preference.PreferenceScreen; 24 import android.util.Log; 25 import android.view.MenuItem; 26 27 import com.android.settingslib.drawer.SettingsDrawerActivity; 28 import com.android.systemui.Dependency; 29 import com.android.systemui.R; 30 import com.android.systemui.fragments.FragmentService; 31 32 public class TunerActivity extends SettingsDrawerActivity implements 33 PreferenceFragment.OnPreferenceStartFragmentCallback, 34 PreferenceFragment.OnPreferenceStartScreenCallback { 35 36 private static final String TAG_TUNER = "tuner"; 37 onCreate(Bundle savedInstanceState)38 protected void onCreate(Bundle savedInstanceState) { 39 super.onCreate(savedInstanceState); 40 Dependency.initDependencies(this); 41 42 if (getFragmentManager().findFragmentByTag(TAG_TUNER) == null) { 43 final String action = getIntent().getAction(); 44 boolean showDemoMode = action != null && action.equals( 45 "com.android.settings.action.DEMO_MODE"); 46 final PreferenceFragment fragment = showDemoMode ? new DemoModeFragment() 47 : new TunerFragment(); 48 getFragmentManager().beginTransaction().replace(R.id.content_frame, 49 fragment, TAG_TUNER).commit(); 50 } 51 } 52 53 @Override onDestroy()54 protected void onDestroy() { 55 super.onDestroy(); 56 Dependency.destroy(FragmentService.class, s -> s.destroyAll()); 57 Dependency.clearDependencies(); 58 } 59 60 @Override onMenuItemSelected(int featureId, MenuItem item)61 public boolean onMenuItemSelected(int featureId, MenuItem item) { 62 if (item.getItemId() == android.R.id.home) { 63 onBackPressed(); 64 return true; 65 } 66 return super.onMenuItemSelected(featureId, item); 67 } 68 69 @Override onBackPressed()70 public void onBackPressed() { 71 if (!getFragmentManager().popBackStackImmediate()) { 72 super.onBackPressed(); 73 } 74 } 75 76 @Override onPreferenceStartFragment(PreferenceFragment caller, Preference pref)77 public boolean onPreferenceStartFragment(PreferenceFragment caller, Preference pref) { 78 try { 79 Class<?> cls = Class.forName(pref.getFragment()); 80 Fragment fragment = (Fragment) cls.newInstance(); 81 final Bundle b = new Bundle(1); 82 b.putString(PreferenceFragment.ARG_PREFERENCE_ROOT, pref.getKey()); 83 fragment.setArguments(b); 84 FragmentTransaction transaction = getFragmentManager().beginTransaction(); 85 setTitle(pref.getTitle()); 86 transaction.replace(R.id.content_frame, fragment); 87 transaction.addToBackStack("PreferenceFragment"); 88 transaction.commit(); 89 return true; 90 } catch (ClassNotFoundException | InstantiationException | IllegalAccessException e) { 91 Log.d("TunerActivity", "Problem launching fragment", e); 92 return false; 93 } 94 } 95 96 @Override onPreferenceStartScreen(PreferenceFragment caller, PreferenceScreen pref)97 public boolean onPreferenceStartScreen(PreferenceFragment caller, PreferenceScreen pref) { 98 FragmentTransaction transaction = getFragmentManager().beginTransaction(); 99 SubSettingsFragment fragment = new SubSettingsFragment(); 100 final Bundle b = new Bundle(1); 101 b.putString(PreferenceFragment.ARG_PREFERENCE_ROOT, pref.getKey()); 102 fragment.setArguments(b); 103 fragment.setTargetFragment(caller, 0); 104 transaction.replace(R.id.content_frame, fragment); 105 transaction.addToBackStack("PreferenceFragment"); 106 transaction.commit(); 107 return true; 108 } 109 110 public static class SubSettingsFragment extends PreferenceFragment { 111 private PreferenceScreen mParentScreen; 112 113 @Override onCreatePreferences(Bundle savedInstanceState, String rootKey)114 public void onCreatePreferences(Bundle savedInstanceState, String rootKey) { 115 mParentScreen = 116 (PreferenceScreen) ((PreferenceFragment) getTargetFragment()) 117 .getPreferenceScreen().findPreference(rootKey); 118 PreferenceScreen screen = 119 getPreferenceManager().createPreferenceScreen( 120 getPreferenceManager().getContext()); 121 setPreferenceScreen(screen); 122 // Copy all the preferences over to this screen so they go into the attached state. 123 while (mParentScreen.getPreferenceCount() > 0) { 124 Preference p = mParentScreen.getPreference(0); 125 mParentScreen.removePreference(p); 126 screen.addPreference(p); 127 } 128 } 129 130 @Override onDestroy()131 public void onDestroy() { 132 super.onDestroy(); 133 // Copy all the preferences back so we don't lose them. 134 PreferenceScreen screen = getPreferenceScreen(); 135 while (screen.getPreferenceCount() > 0) { 136 Preference p = screen.getPreference(0); 137 screen.removePreference(p); 138 mParentScreen.addPreference(p); 139 } 140 } 141 } 142 143 } 144