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/*
* 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* Through the layoutlib_create tool, selected methods of SimpleMonthView have been replaced by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;
}
}
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