* A date editor component that can be bound to any {@link Property} that is
* compatible with java.util.Date.
*
* Since DateField extends AbstractField it implements
* the {@link com.vaadin.data.Buffered}interface.
*
* A DateField is in write-through mode by default, so
* {@link com.vaadin.ui.AbstractField#setWriteThrough(boolean)}must be called to
* enable buffering.
*
DateField with no caption.
*/
public DateField() {
}
/**
* Constructs an empty DateField with caption.
*
* @param caption
* the caption of the datefield.
*/
public DateField(String caption) {
setCaption(caption);
}
/**
* Constructs a new DateField that's bound to the specified
* Property and has the given caption String.
*
* @param caption
* the caption String for the editor.
* @param dataSource
* the Property to be edited with this editor.
*/
public DateField(String caption, Property dataSource) {
this(dataSource);
setCaption(caption);
}
/**
* Constructs a new DateField that's bound to the specified
* Property and has no caption.
*
* @param dataSource
* the Property to be edited with this editor.
*/
public DateField(Property dataSource) throws IllegalArgumentException {
if (!Date.class.isAssignableFrom(dataSource.getType())) {
throw new IllegalArgumentException("Can't use "
+ dataSource.getType().getName()
+ " typed property as datasource");
}
setPropertyDataSource(dataSource);
}
/**
* Constructs a new DateField with the given caption and
* initial text contents. The editor constructed this way will not be bound
* to a Property unless
* {@link com.vaadin.data.Property.Viewer#setPropertyDataSource(Property)}
* is called to bind it.
*
* @param caption
* the caption String for the editor.
* @param value
* the Date value.
*/
public DateField(String caption, Date value) {
setValue(value);
setCaption(caption);
}
/* Component basic features */
/*
* Paints this component. Don't add a JavaDoc comment here, we use the
* default documentation from implemented interface.
*/
@Override
public void paintContent(PaintTarget target) throws PaintException {
// Adds the locale as attribute
final Locale l = getLocale();
if (l != null) {
target.addAttribute("locale", l.toString());
}
if (getDateFormat() != null) {
target.addAttribute("format", dateFormat);
}
if (!isLenient()) {
target.addAttribute("strict", true);
}
target.addAttribute(DateFieldConstants.ATTR_WEEK_NUMBERS,
isShowISOWeekNumbers());
target.addAttribute("parsable", uiHasValidDateString);
/*
* TODO communicate back the invalid date string? E.g. returning back to
* app or refresh.
*/
// Gets the calendar
final Calendar calendar = getCalendar();
final Date currentDate = getValue();
// Only paint variables for the resolution and up, e.g. Resolution DAY
// paints DAY,MONTH,YEAR
for (Resolution res : Resolution
.getResolutionsHigherOrEqualTo(resolution)) {
int value = -1;
if (currentDate != null) {
value = calendar.get(res.getCalendarField());
if (res == Resolution.MONTH) {
// Calendar month is zero based
value++;
}
}
target.addVariable(this, variableNameForResolution.get(res), value);
}
}
@Override
protected boolean shouldHideErrors() {
return super.shouldHideErrors() && uiHasValidDateString;
}
/*
* Invoked when a variable of the component changes. Don't add a JavaDoc
* comment here, we use the default documentation from implemented
* interface.
*/
@Override
public void changeVariables(Object source, MapCalendar.getInstance
* is used.
*
* @return the Calendar.
* @see #setCalendar(Calendar)
*/
private Calendar getCalendar() {
// Makes sure we have an calendar instance
if (calendar == null) {
calendar = Calendar.getInstance();
// Start by a zeroed calendar to avoid having values for lower
// resolution variables e.g. time when resolution is day
for (Resolution r : Resolution.getResolutionsLowerThan(resolution)) {
calendar.set(r.getCalendarField(), 0);
}
calendar.set(Calendar.MILLISECOND, 0);
}
// Clone the instance
final Calendar newCal = (Calendar) calendar.clone();
// Assigns the current time tom calendar.
final Date currentDate = getValue();
if (currentDate != null) {
newCal.setTime(currentDate);
}
final TimeZone currentTimeZone = getTimeZone();
if (currentTimeZone != null) {
newCal.setTimeZone(currentTimeZone);
}
return newCal;
}
/**
* Sets formatting used by some component implementations. See
* {@link SimpleDateFormat} for format details.
*
* By default it is encouraged to used default formatting defined by Locale,
* but due some JVM bugs it is sometimes necessary to use this method to
* override formatting. See Vaadin issue #2200.
*
* @param dateFormat
* the dateFormat to set
*
* @see com.vaadin.ui.AbstractComponent#setLocale(Locale))
*/
public void setDateFormat(String dateFormat) {
this.dateFormat = dateFormat;
requestRepaint();
}
/**
* Returns a format string used to format date value on client side or null
* if default formatting from {@link Component#getLocale()} is used.
*
* @return the dateFormat
*/
public String getDateFormat() {
return dateFormat;
}
/**
* Specifies whether or not date/time interpretation in component is to be
* lenient.
*
* @see Calendar#setLenient(boolean)
* @see #isLenient()
*
* @param lenient
* true if the lenient mode is to be turned on; false if it is to
* be turned off.
*/
public void setLenient(boolean lenient) {
this.lenient = lenient;
requestRepaint();
}
/**
* Returns whether date/time interpretation is to be lenient.
*
* @see #setLenient(boolean)
*
* @return true if the interpretation mode of this calendar is lenient;
* false otherwise.
*/
public boolean isLenient() {
return lenient;
}
@Override
public void addListener(FocusListener listener) {
addListener(FocusEvent.EVENT_ID, FocusEvent.class, listener,
FocusListener.focusMethod);
}
@Override
public void removeListener(FocusListener listener) {
removeListener(FocusEvent.EVENT_ID, FocusEvent.class, listener);
}
@Override
public void addListener(BlurListener listener) {
addListener(BlurEvent.EVENT_ID, BlurEvent.class, listener,
BlurListener.blurMethod);
}
@Override
public void removeListener(BlurListener listener) {
removeListener(BlurEvent.EVENT_ID, BlurEvent.class, listener);
}
/**
* Checks whether ISO 8601 week numbers are shown in the date selector.
*
* @return true if week numbers are shown, false otherwise.
*/
public boolean isShowISOWeekNumbers() {
return showISOWeekNumbers;
}
/**
* Sets the visibility of ISO 8601 week numbers in the date selector. ISO
* 8601 defines that a week always starts with a Monday so the week numbers
* are only shown if this is the case.
*
* @param showWeekNumbers
* true if week numbers should be shown, false otherwise.
*/
public void setShowISOWeekNumbers(boolean showWeekNumbers) {
showISOWeekNumbers = showWeekNumbers;
requestRepaint();
}
/**
* Validates the current value against registered validators if the field is
* not empty. Note that DateField is considered empty (value == null) and
* invalid if it contains text typed in by the user that couldn't be parsed
* into a Date value.
*
* @see com.vaadin.ui.AbstractField#validate()
*/
@Override
public void validate() throws InvalidValueException {
/*
* To work properly in form we must throw exception if there is
* currently a parsing error in the datefield. Parsing error is kind of
* an internal validator.
*/
if (!uiHasValidDateString) {
throw new UnparsableDateString(currentParseErrorMessage);
}
super.validate();
}
/**
* Return the error message that is shown if the user inputted value can't
* be parsed into a Date object. If
* {@link #handleUnparsableDateString(String)} is overridden and it throws a
* custom exception, the message returned by
* {@link Exception#getLocalizedMessage()} will be used instead of the value
* returned by this method.
*
* @see #setParseErrorMessage(String)
*
* @return the error message that the DateField uses when it can't parse the
* textual input from user to a Date object
*/
public String getParseErrorMessage() {
return defaultParseErrorMessage;
}
/**
* Sets the default error message used if the DateField cannot parse the
* text input by user to a Date field. Note that if the
* {@link #handleUnparsableDateString(String)} method is overridden, the
* localized message from its exception is used.
*
* @see #getParseErrorMessage()
* @see #handleUnparsableDateString(String)
* @param parsingErrorMessage
*/
public void setParseErrorMessage(String parsingErrorMessage) {
defaultParseErrorMessage = parsingErrorMessage;
}
/**
* Sets the time zone used by this date field. The time zone is used to
* convert the absolute time in a Date object to a logical time displayed in
* the selector and to convert the select time back to a Date object.
*
* If no time zone has been set, the current default time zone returned by
* {@code TimeZone.getDefault()} is used.
*
* @see #getTimeZone()
* @param timeZone
* the time zone to use for time calculations.
*/
public void setTimeZone(TimeZone timeZone) {
this.timeZone = timeZone;
requestRepaint();
}
/**
* Gets the time zone used by this field. The time zone is used to convert
* the absolute time in a Date object to a logical time displayed in the
* selector and to convert the select time back to a Date object.
*
* If {@code null} is returned, the current default time zone returned by
* {@code TimeZone.getDefault()} is used.
*
* @return the current time zone
*/
public TimeZone getTimeZone() {
return timeZone;
}
public static class UnparsableDateString extends
Validator.InvalidValueException {
public UnparsableDateString(String message) {
super(message);
}
}
}