Heemin Seog | be66bca | 2019-04-10 15:49:33 -0700 | [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 | |
| 17 | package com.android.car.developeroptions; |
| 18 | |
| 19 | import android.app.Dialog; |
| 20 | import android.app.settings.SettingsEnums; |
| 21 | import android.content.Context; |
| 22 | import android.content.DialogInterface; |
| 23 | import android.content.DialogInterface.OnClickListener; |
| 24 | import android.content.Intent; |
| 25 | import android.os.Bundle; |
| 26 | import android.util.AttributeSet; |
| 27 | |
| 28 | import androidx.appcompat.app.AlertDialog.Builder; |
| 29 | import androidx.fragment.app.Fragment; |
| 30 | import androidx.fragment.app.FragmentTransaction; |
| 31 | import androidx.preference.ListPreference; |
| 32 | import androidx.preference.ListPreferenceDialogFragmentCompat; |
| 33 | |
| 34 | import com.android.car.developeroptions.core.instrumentation.InstrumentedDialogFragment; |
| 35 | |
| 36 | public class CustomListPreference extends ListPreference { |
| 37 | |
| 38 | public CustomListPreference(Context context, AttributeSet attrs) { |
| 39 | super(context, attrs); |
| 40 | } |
| 41 | |
| 42 | public CustomListPreference(Context context, AttributeSet attrs, int defStyleAttr, |
| 43 | int defStyleRes) { |
| 44 | super(context, attrs, defStyleAttr, defStyleRes); |
| 45 | } |
| 46 | |
| 47 | protected void onPrepareDialogBuilder(Builder builder, |
| 48 | DialogInterface.OnClickListener listener) { |
| 49 | } |
| 50 | |
| 51 | protected void onDialogClosed(boolean positiveResult) { |
| 52 | } |
| 53 | |
| 54 | protected void onDialogCreated(Dialog dialog) { |
| 55 | } |
| 56 | |
| 57 | protected boolean isAutoClosePreference() { |
| 58 | return true; |
| 59 | } |
| 60 | |
| 61 | /** |
| 62 | * Called when a user is about to choose the given value, to determine if we |
| 63 | * should show a confirmation dialog. |
| 64 | * |
| 65 | * @param value the value the user is about to choose |
| 66 | * @return the message to show in a confirmation dialog, or {@code null} to |
| 67 | * not request confirmation |
| 68 | */ |
| 69 | protected CharSequence getConfirmationMessage(String value) { |
| 70 | return null; |
| 71 | } |
| 72 | |
| 73 | protected void onDialogStateRestored(Dialog dialog, Bundle savedInstanceState) { |
| 74 | } |
| 75 | |
| 76 | public static class CustomListPreferenceDialogFragment extends |
| 77 | ListPreferenceDialogFragmentCompat { |
| 78 | |
| 79 | private static final java.lang.String KEY_CLICKED_ENTRY_INDEX |
| 80 | = "settings.CustomListPrefDialog.KEY_CLICKED_ENTRY_INDEX"; |
| 81 | |
| 82 | private int mClickedDialogEntryIndex; |
| 83 | |
| 84 | public static ListPreferenceDialogFragmentCompat newInstance(String key) { |
| 85 | final ListPreferenceDialogFragmentCompat fragment = |
| 86 | new CustomListPreferenceDialogFragment(); |
| 87 | final Bundle b = new Bundle(1); |
| 88 | b.putString(ARG_KEY, key); |
| 89 | fragment.setArguments(b); |
| 90 | return fragment; |
| 91 | } |
| 92 | |
| 93 | private CustomListPreference getCustomizablePreference() { |
| 94 | return (CustomListPreference) getPreference(); |
| 95 | } |
| 96 | |
| 97 | @Override |
| 98 | protected void onPrepareDialogBuilder(Builder builder) { |
| 99 | super.onPrepareDialogBuilder(builder); |
| 100 | mClickedDialogEntryIndex = getCustomizablePreference() |
| 101 | .findIndexOfValue(getCustomizablePreference().getValue()); |
| 102 | getCustomizablePreference().onPrepareDialogBuilder(builder, getOnItemClickListener()); |
| 103 | if (!getCustomizablePreference().isAutoClosePreference()) { |
| 104 | builder.setPositiveButton(R.string.okay, new DialogInterface.OnClickListener() { |
| 105 | @Override |
| 106 | public void onClick(DialogInterface dialog, int which) { |
| 107 | onItemChosen(); |
| 108 | } |
| 109 | }); |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | @Override |
| 114 | public Dialog onCreateDialog(Bundle savedInstanceState) { |
| 115 | Dialog dialog = super.onCreateDialog(savedInstanceState); |
| 116 | if (savedInstanceState != null) { |
| 117 | mClickedDialogEntryIndex = savedInstanceState.getInt(KEY_CLICKED_ENTRY_INDEX, |
| 118 | mClickedDialogEntryIndex); |
| 119 | } |
| 120 | getCustomizablePreference().onDialogCreated(dialog); |
| 121 | return dialog; |
| 122 | } |
| 123 | |
| 124 | @Override |
| 125 | public void onSaveInstanceState(Bundle outState) { |
| 126 | super.onSaveInstanceState(outState); |
| 127 | outState.putInt(KEY_CLICKED_ENTRY_INDEX, mClickedDialogEntryIndex); |
| 128 | } |
| 129 | |
| 130 | @Override |
| 131 | public void onActivityCreated(Bundle savedInstanceState) { |
| 132 | super.onActivityCreated(savedInstanceState); |
| 133 | getCustomizablePreference().onDialogStateRestored(getDialog(), savedInstanceState); |
| 134 | } |
| 135 | |
| 136 | protected DialogInterface.OnClickListener getOnItemClickListener() { |
| 137 | return new DialogInterface.OnClickListener() { |
| 138 | @Override |
| 139 | public void onClick(DialogInterface dialog, int which) { |
| 140 | setClickedDialogEntryIndex(which); |
| 141 | if (getCustomizablePreference().isAutoClosePreference()) { |
| 142 | onItemChosen(); |
| 143 | } |
| 144 | } |
| 145 | }; |
| 146 | } |
| 147 | |
| 148 | protected void setClickedDialogEntryIndex(int which) { |
| 149 | mClickedDialogEntryIndex = which; |
| 150 | } |
| 151 | |
| 152 | private String getValue() { |
| 153 | final ListPreference preference = getCustomizablePreference(); |
| 154 | if (mClickedDialogEntryIndex >= 0 && preference.getEntryValues() != null) { |
| 155 | return preference.getEntryValues()[mClickedDialogEntryIndex].toString(); |
| 156 | } else { |
| 157 | return null; |
| 158 | } |
| 159 | } |
| 160 | |
| 161 | /** |
| 162 | * Called when user has made a concrete item choice, but we might need |
| 163 | * to make a quick detour to confirm that choice with a second dialog. |
| 164 | */ |
| 165 | protected void onItemChosen() { |
| 166 | final CharSequence message = getCustomizablePreference() |
| 167 | .getConfirmationMessage(getValue()); |
| 168 | if (message != null) { |
| 169 | final Fragment f = new ConfirmDialogFragment(); |
| 170 | final Bundle args = new Bundle(); |
| 171 | args.putCharSequence(Intent.EXTRA_TEXT, message); |
| 172 | f.setArguments(args); |
| 173 | f.setTargetFragment(CustomListPreferenceDialogFragment.this, 0); |
| 174 | final FragmentTransaction ft = getFragmentManager().beginTransaction(); |
| 175 | ft.add(f, getTag() + "-Confirm"); |
| 176 | ft.commitAllowingStateLoss(); |
| 177 | } else { |
| 178 | onItemConfirmed(); |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | /** |
| 183 | * Called when user has made a concrete item choice and we've fully |
| 184 | * confirmed they want to move forward (if we took a detour above). |
| 185 | */ |
| 186 | protected void onItemConfirmed() { |
| 187 | onClick(getDialog(), DialogInterface.BUTTON_POSITIVE); |
| 188 | getDialog().dismiss(); |
| 189 | } |
| 190 | |
| 191 | @Override |
| 192 | public void onDialogClosed(boolean positiveResult) { |
| 193 | getCustomizablePreference().onDialogClosed(positiveResult); |
| 194 | final ListPreference preference = getCustomizablePreference(); |
| 195 | final String value = getValue(); |
| 196 | if (positiveResult && value != null) { |
| 197 | if (preference.callChangeListener(value)) { |
| 198 | preference.setValue(value); |
| 199 | } |
| 200 | } |
| 201 | } |
| 202 | } |
| 203 | |
| 204 | public static class ConfirmDialogFragment extends InstrumentedDialogFragment { |
| 205 | @Override |
| 206 | public Dialog onCreateDialog(Bundle savedInstanceState) { |
| 207 | return new Builder(getActivity()) |
| 208 | .setMessage(getArguments().getCharSequence(Intent.EXTRA_TEXT)) |
| 209 | .setPositiveButton(android.R.string.ok, new OnClickListener() { |
| 210 | @Override |
| 211 | public void onClick(DialogInterface dialog, int which) { |
| 212 | final Fragment f = getTargetFragment(); |
| 213 | if (f != null) { |
| 214 | ((CustomListPreferenceDialogFragment) f).onItemConfirmed(); |
| 215 | } |
| 216 | } |
| 217 | }) |
| 218 | .setNegativeButton(android.R.string.cancel, null) |
| 219 | .create(); |
| 220 | } |
| 221 | |
| 222 | @Override |
| 223 | public int getMetricsCategory() { |
| 224 | return SettingsEnums.DIALOG_CUSTOM_LIST_CONFIRMATION; |
| 225 | } |
| 226 | } |
| 227 | } |