// License: GPL. For details, see LICENSE file.
package org.openstreetmap.josm.gui.dialogs.changeset.query;
import static org.openstreetmap.josm.tools.I18n.tr;
import java.time.LocalDate;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
import java.time.format.DateTimeParseException;
import java.time.format.FormatStyle;
import javax.swing.text.JTextComponent;
import org.openstreetmap.josm.gui.widgets.AbstractTextComponentValidator;
import org.openstreetmap.josm.tools.Logging;
/**
* Validates dates entered as text in a {@link JTextComponent}. Validates the input
* on the fly and gives feedback about whether the date is valid or not.
*
* Dates can be entered in one of four standard formats defined for the current locale.
* @since 11326 (extracted from AdvancedChangesetQueryPanel)
*/
public class DateValidator extends AbstractTextComponentValidator {
/**
* Constructs a new {@code DateValidator} for the given text component.
* @param tc text component
*/
public DateValidator(JTextComponent tc) {
super(tc);
}
/**
* Decorates the given text component.
* @param tc text component to decorate
* @return new date validator attached to {@code tc}
*/
public static DateValidator decorate(JTextComponent tc) {
return new DateValidator(tc);
}
@Override
public boolean isValid() {
return getDate() != null;
}
/**
* Returns the standard tooltip text as HTML.
* @return the standard tooltip text as HTML
*/
public String getStandardTooltipTextAsHtml() {
return "" + getStandardTooltipText() + "";
}
/**
* Returns the standard tooltip text.
* @return the standard tooltip text
*/
public String getStandardTooltipText() {
final ZonedDateTime now = ZonedDateTime.now(ZoneId.systemDefault());
return tr(
"Please enter a date in the usual format for your locale.
"
+ "Example: {0}
"
+ "Example: {1}
"
+ "Example: {2}
"
+ "Example: {3}
",
DateTimeFormatter.ofLocalizedDate(FormatStyle.SHORT).format(now),
DateTimeFormatter.ofLocalizedDate(FormatStyle.MEDIUM).format(now),
DateTimeFormatter.ofLocalizedDate(FormatStyle.LONG).format(now),
DateTimeFormatter.ofLocalizedDate(FormatStyle.FULL).format(now)
);
}
@Override
public void validate() {
if (!isValid()) {
String msg = "The current value isn't a valid date.
" + getStandardTooltipText()+ "";
feedbackInvalid(msg);
} else {
String msg = "" + getStandardTooltipText() + "";
feedbackValid(msg);
}
}
/**
* Returns the date.
* @return the date
*/
public LocalDate getDate() {
for (final FormatStyle format: FormatStyle.values()) {
DateTimeFormatter df = DateTimeFormatter.ofLocalizedDate(format);
try {
return LocalDate.parse(getComponent().getText(), df);
} catch (DateTimeParseException e) {
// Try next format
Logging.trace(e);
}
}
return null;
}
}