/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.settings.localepicker;
import android.app.AlertDialog;
import android.app.FragmentTransaction;
import android.content.Context;
import android.content.DialogInterface;
import android.os.Bundle;
import android.os.LocaleList;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import com.android.internal.app.LocalePicker;
import com.android.internal.app.LocalePickerWithRegion;
import com.android.internal.app.LocaleStore;
import com.android.internal.logging.MetricsProto.MetricsEvent;
import com.android.settings.R;
import com.android.settings.SettingsPreferenceFragment;
import java.util.ArrayList;
import java.util.List;
import java.util.Locale;
/**
* Drag-and-drop editor for the user-ordered locale lists.
*/
public class LocaleListEditor extends SettingsPreferenceFragment
implements LocalePickerWithRegion.LocaleSelectedListener {
private static final String CFGKEY_REMOVE_MODE = "localeRemoveMode";
private static final String CFGKEY_REMOVE_DIALOG = "showingLocaleRemoveDialog";
private static final int MENU_ID_REMOVE = Menu.FIRST + 1;
private LocaleDragAndDropAdapter mAdapter;
private Menu mMenu;
private View mAddLanguage;
private boolean mRemoveMode;
private boolean mShowingRemoveDialog;
@Override
protected int getMetricsCategory() {
return MetricsEvent.USER_LOCALE_LIST;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
LocaleStore.fillCache(this.getContext());
final List<LocaleStore.LocaleInfo> feedsList = getUserLocaleList(this.getContext());
mAdapter = new LocaleDragAndDropAdapter(this.getContext(), feedsList);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstState) {
final View result = super.onCreateView(inflater, container, savedInstState);
final View myLayout = inflater.inflate(R.layout.locale_order_list, (ViewGroup) result);
getActivity().setTitle(R.string.pref_title_lang_selection);
configureDragAndDrop(myLayout);
return result;
}
@Override
public void onViewStateRestored(Bundle savedInstanceState) {
super.onViewStateRestored(savedInstanceState);
if (savedInstanceState != null) {
mRemoveMode = savedInstanceState.getBoolean(CFGKEY_REMOVE_MODE, false);
mShowingRemoveDialog = savedInstanceState.getBoolean(CFGKEY_REMOVE_DIALOG, false);
}
setRemoveMode(mRemoveMode);
mAdapter.restoreState(savedInstanceState);
if (mShowingRemoveDialog) {
showRemoveLocaleWarningDialog();
}
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putBoolean(CFGKEY_REMOVE_MODE, mRemoveMode);
outState.putBoolean(CFGKEY_REMOVE_DIALOG, mShowingRemoveDialog);
mAdapter.saveState(outState);
}
@Override
public boolean onOptionsItemSelected(MenuItem menuItem) {
switch (menuItem.getItemId()) {
case MENU_ID_REMOVE:
if (mRemoveMode) {
showRemoveLocaleWarningDialog();
} else {
setRemoveMode(true);
}
return true;
case android.R.id.home:
if (mRemoveMode) {
setRemoveMode(false);
return true;
}
break;
}
return super.onOptionsItemSelected(menuItem);
}
private void setRemoveMode(boolean mRemoveMode) {
this.mRemoveMode = mRemoveMode;
mAdapter.setRemoveMode(mRemoveMode);
mAddLanguage.setVisibility(mRemoveMode ? View.INVISIBLE : View.VISIBLE);
updateVisibilityOfRemoveMenu();
}
// Show the appropriate warning when the user tries to remove locales.
// Shows no warning if there is no locale checked, shows a warning
// about removing all the locales if all of them are checked, and
// a "regular" warning otherwise.
private void showRemoveLocaleWarningDialog() {
int checkedCount = mAdapter.getCheckedCount();
// Nothing checked, just exit remove mode without a warning dialog
if (checkedCount == 0) {
setRemoveMode(!mRemoveMode);
return;
}
// All locales selected, warning dialog, can't remove them all
if (checkedCount == mAdapter.getItemCount()) {
mShowingRemoveDialog = true;
new AlertDialog.Builder(getActivity())
.setTitle(R.string.dlg_remove_locales_error_title)
.setMessage(R.string.dlg_remove_locales_error_message)
.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
})
.setOnDismissListener(new DialogInterface.OnDismissListener() {
@Override
public void onDismiss(DialogInterface dialog) {
mShowingRemoveDialog = false;
}
})
.create()
.show();
return;
}
final String title = getResources().getQuantityString(R.plurals.dlg_remove_locales_title,
checkedCount);
mShowingRemoveDialog = true;
new AlertDialog.Builder(getActivity())
.setTitle(title)
.setMessage(R.string.dlg_remove_locales_message)
.setNegativeButton(android.R.string.no, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
setRemoveMode(false);
}
})
.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// This is a sensitive area to change.
// removeChecked() triggers a system update and "kills" the frame.
// This means that saveState + restoreState are called before
// setRemoveMode is called.
// So we want that mRemoveMode and dialog status have the right values
// before that save.
// We can't just call setRemoveMode(false) before calling removeCheched
// because that unchecks all items and removeChecked would have nothing
// to remove.
mRemoveMode = false;
mShowingRemoveDialog = false;
mAdapter.removeChecked();
setRemoveMode(false);
}
})
.setOnDismissListener(new DialogInterface.OnDismissListener() {
@Override
public void onDismiss(DialogInterface dialog) {
mShowingRemoveDialog = false;
}
})
.create()
.show();
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
final MenuItem menuItem =
menu.add(Menu.NONE, MENU_ID_REMOVE, 0, R.string.locale_remove_menu);
menuItem.setShowAsAction(MenuItem.SHOW_AS_ACTION_WITH_TEXT);
menuItem.setIcon(R.drawable.ic_delete);
super.onCreateOptionsMenu(menu, inflater);
mMenu = menu;
updateVisibilityOfRemoveMenu();
}
private static List<LocaleStore.LocaleInfo> getUserLocaleList(Context context) {
final List<LocaleStore.LocaleInfo> result = new ArrayList<>();
final LocaleList localeList = LocalePicker.getLocales();
for (int i = 0; i < localeList.size(); i++) {
Locale locale = localeList.get(i);
result.add(LocaleStore.getLocaleInfo(locale));
}
return result;
}
private void configureDragAndDrop(View view) {
final RecyclerView list = (RecyclerView) view.findViewById(R.id.dragList);
final LocaleLinearLayoutManager llm = new LocaleLinearLayoutManager(getContext(), mAdapter);
llm.setAutoMeasureEnabled(true);
list.setLayoutManager(llm);
list.setHasFixedSize(true);
mAdapter.setRecyclerView(list);
list.setAdapter(mAdapter);
mAddLanguage = view.findViewById(R.id.add_language);
mAddLanguage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
final LocalePickerWithRegion selector = LocalePickerWithRegion.createLanguagePicker(
getContext(), LocaleListEditor.this, false /* translate only */);
getFragmentManager()
.beginTransaction()
.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN)
.replace(getId(), selector)
.addToBackStack("localeListEditor")
.commit();
}
});
}
@Override
public void onLocaleSelected(LocaleStore.LocaleInfo locale) {
mAdapter.addLocale(locale);
updateVisibilityOfRemoveMenu();
}
// Hide the "Remove" menu if there is only one locale in the list, show it otherwise
// This is called when the menu is first created, and then one add / remove locale
private void updateVisibilityOfRemoveMenu() {
if (mMenu == null) {
return;
}
final MenuItem menuItemRemove = mMenu.findItem(MENU_ID_REMOVE);
if (menuItemRemove != null) {
menuItemRemove.setShowAsAction(
mRemoveMode ? MenuItem.SHOW_AS_ACTION_ALWAYS : MenuItem.SHOW_AS_ACTION_NEVER);
menuItemRemove.setVisible(mAdapter.getItemCount() > 1);
}
}
}