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/*
* Copyright 2000-2024 Vaadin Ltd.
*
* 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.vaadin.flow.data.renderer;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.time.format.FormatStyle;
import java.util.Locale;
import com.vaadin.flow.function.SerializableSupplier;
import com.vaadin.flow.function.ValueProvider;
/**
*
* A renderer for presenting {@code LocalDateTime} objects.
*
* @author Vaadin Ltd
*
* @param
* the type of the input item, from which the {@link LocalDateTime}
* is extracted
*/
public class LocalDateTimeRenderer
extends BasicRenderer {
private SerializableSupplier formatter;
private String nullRepresentation;
/**
* Creates a new LocalDateTimeRenderer.
*
* The renderer is configured to render with the format style
* {@code FormatStyle.LONG} for the date and {@code FormatStyle.SHORT} for
* time, with an empty string as its null representation.
*
* @param valueProvider
* the callback to provide a {@link LocalDateTime} to the
* renderer, not null
*
* @see
* FormatStyle.LONG
* @see
* FormatStyle.SHORT
*/
public LocalDateTimeRenderer(
ValueProvider valueProvider) {
this(valueProvider, () -> DateTimeFormatter
.ofLocalizedDateTime(FormatStyle.LONG, FormatStyle.SHORT), "");
}
/**
* Creates a new LocalDateTimeRenderer.
*
* The renderer is configured to render with the given formatter, with the
* empty string as its null representation.
*
* @param valueProvider
* the callback to provide a {@link LocalDateTime} to the
* renderer, not null
* @param formatter
* the formatter to use, not null
*/
public LocalDateTimeRenderer(
ValueProvider valueProvider,
SerializableSupplier formatter) {
this(valueProvider, formatter, "");
}
/**
* Creates a new LocalDateTimeRenderer.
*
* The renderer is configured to render with the given formatter.
*
* @param valueProvider
* the callback to provide a {@link LocalDateTime} to the
* renderer, not null
* @param formatter
* the formatter to use, not null
* @param nullRepresentation
* the textual representation of the null value
*/
public LocalDateTimeRenderer(
ValueProvider valueProvider,
SerializableSupplier formatter,
String nullRepresentation) {
super(valueProvider);
if (formatter == null) {
throw new IllegalArgumentException("formatter may not be null");
}
this.formatter = formatter;
this.nullRepresentation = nullRepresentation;
}
/**
* Creates a new LocalDateTimeRenderer.
*
* The renderer is configured to render with the given string format, with
* an empty string as its null representation.
*
* @param valueProvider
* the callback to provide a {@link LocalDateTime} to the
* renderer, not null
* @param formatPattern
* the format pattern to format the date with, not
* null
*
* @see
* Format Pattern Syntax
*/
public LocalDateTimeRenderer(
ValueProvider valueProvider,
String formatPattern) {
this(valueProvider, formatPattern, Locale.getDefault());
}
/**
* Creates a new LocalDateTimeRenderer.
*
* The renderer is configured to render with the given string format, as
* displayed in the given locale, with an empty string as its null
* representation.
*
* @param valueProvider
* the callback to provide a {@link LocalDateTime} to the
* renderer, not null
* @param formatPattern
* the format pattern to format the date with, not
* null
* @param locale
* the locale to use, not null
*
* @see
* Format Pattern Syntax
*/
public LocalDateTimeRenderer(
ValueProvider valueProvider,
String formatPattern, Locale locale) {
this(valueProvider, formatPattern, locale, "");
}
/**
* Creates a new LocalDateTimeRenderer.
*
* The renderer is configured to render with the given string format, as
* displayed in the given locale.
*
* @param valueProvider
* the callback to provide a {@link LocalDateTime} to the
* renderer, not null
* @param formatPattern
* the format pattern to format the date with, not
* null
* @param locale
* the locale to use, not null
* @param nullRepresentation
* the textual representation of the null value
*
* @see
* Format Pattern Syntax
*/
public LocalDateTimeRenderer(
ValueProvider valueProvider,
String formatPattern, Locale locale, String nullRepresentation) {
super(valueProvider);
if (formatPattern == null) {
throw new IllegalArgumentException(
"format pattern may not be null");
}
if (locale == null) {
throw new IllegalArgumentException("locale may not be null");
}
formatter = () -> DateTimeFormatter.ofPattern(formatPattern, locale);
this.nullRepresentation = nullRepresentation;
}
@Override
protected String getFormattedValue(LocalDateTime dateTime) {
return dateTime == null ? nullRepresentation
: formatter.get().format(dateTime);
}
}
