| /* |
| * Copyright (C) 2015 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 android.widget; |
| |
| import com.android.tools.layoutlib.annotations.LayoutlibDelegate; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.icu.text.SimpleDateFormat; |
| import android.text.format.DateFormat; |
| |
| import java.util.Calendar; |
| import java.util.Locale; |
| |
| /** |
| * Delegate that provides implementation for some methods in {@link SimpleMonthView}. |
| * <p/> |
| * Through the layoutlib_create tool, selected methods of SimpleMonthView have been replaced by |
| * calls to methods of the same name in this delegate class. |
| * <p/> |
| * The main purpose of this class is to use {@link android.icu.text.SimpleDateFormat} instead of |
| * {@link java.text.SimpleDateFormat}. |
| */ |
| public class SimpleMonthView_Delegate { |
| |
| private static final String DEFAULT_TITLE_FORMAT = "MMMMy"; |
| private static final String DAY_OF_WEEK_FORMAT = "EEEEE"; |
| |
| // Maintain a cache of the last view used, so that the formatters can be reused. |
| @Nullable private static SimpleMonthView sLastView; |
| @Nullable private static SimpleMonthView_Delegate sLastDelegate; |
| |
| private SimpleDateFormat mTitleFormatter; |
| private SimpleDateFormat mDayOfWeekFormatter; |
| |
| private Locale locale; |
| |
| @LayoutlibDelegate |
| /*package*/ static CharSequence getTitle(SimpleMonthView view) { |
| if (view.mTitle == null) { |
| SimpleMonthView_Delegate delegate = getDelegate(view); |
| if (delegate.mTitleFormatter == null) { |
| delegate.mTitleFormatter = new SimpleDateFormat(DateFormat.getBestDateTimePattern( |
| getLocale(delegate, view), DEFAULT_TITLE_FORMAT)); |
| } |
| view.mTitle = delegate.mTitleFormatter.format(view.mCalendar.getTime()); |
| } |
| return view.mTitle; |
| } |
| |
| @LayoutlibDelegate |
| /*package*/ static String getDayOfWeekLabel(SimpleMonthView view, int dayOfWeek) { |
| view.mDayOfWeekLabelCalendar.set(Calendar.DAY_OF_WEEK, dayOfWeek); |
| SimpleMonthView_Delegate delegate = getDelegate(view); |
| if (delegate.mDayOfWeekFormatter == null) { |
| delegate.mDayOfWeekFormatter = |
| new SimpleDateFormat(DAY_OF_WEEK_FORMAT, getLocale(delegate, view)); |
| } |
| return delegate.mDayOfWeekFormatter.format(view.mDayOfWeekLabelCalendar.getTime()); |
| } |
| |
| private static Locale getLocale(SimpleMonthView_Delegate delegate, SimpleMonthView view) { |
| if (delegate.locale == null) { |
| delegate.locale = view.getContext().getResources().getConfiguration().locale; |
| } |
| return delegate.locale; |
| } |
| |
| @NonNull |
| private static SimpleMonthView_Delegate getDelegate(SimpleMonthView view) { |
| if (view == sLastView) { |
| assert sLastDelegate != null; |
| return sLastDelegate; |
| } else { |
| sLastView = view; |
| sLastDelegate = new SimpleMonthView_Delegate(); |
| return sLastDelegate; |
| } |
| } |
| |
| public static void clearCache() { |
| sLastView = null; |
| sLastDelegate = null; |
| } |
| } |