org.jbpm.console.ng.gc.client.util

Class UTCDateBox

java.lang.Object

com.google.gwt.user.client.ui.UIObject

com.google.gwt.user.client.ui.Widget

com.google.gwt.user.client.ui.Composite

org.jbpm.console.ng.gc.client.util.UTCDateBox

All Implemented Interfaces:

com.google.gwt.event.logical.shared.HasAttachHandlers, com.google.gwt.event.logical.shared.HasValueChangeHandlers<Long>, com.google.gwt.event.shared.HasHandlers, com.google.gwt.user.client.EventListener, com.google.gwt.user.client.TakesValue<Long>, com.google.gwt.user.client.ui.HasEnabled, com.google.gwt.user.client.ui.HasValue<Long>, com.google.gwt.user.client.ui.HasVisibility, com.google.gwt.user.client.ui.IsRenderable, com.google.gwt.user.client.ui.IsWidget

public class UTCDateBox
extends com.google.gwt.user.client.ui.Composite
implements com.google.gwt.user.client.ui.HasValue<Long>, com.google.gwt.event.logical.shared.HasValueChangeHandlers<Long>, com.google.gwt.user.client.ui.HasEnabled

A wrapper around DatePicker that implements HasValue where the value is the number of milliseconds since January 1, 1970, 00:00:00 GMT at midnight on the day, month, and year selected. This avoids time zone conversion issues encountered using the DateBox.

Note: In keeping with the behavior of the GWT DateBox, null is used to represent no value. This means that you should check for null when calling getValue(), just as you would for DateBox. With auto-boxing Long/long, this may seem strange but is consistent.

Nested Class Summary

Nested classes/interfaces inherited from class com.google.gwt.user.client.ui.UIObject

com.google.gwt.user.client.ui.UIObject.DebugIdImpl, com.google.gwt.user.client.ui.UIObject.DebugIdImplEnabled

Field Summary

Fields

Modifier and Type	Field and Description
static long	DAY_IN_MS

Fields inherited from class com.google.gwt.user.client.ui.UIObject

DEBUG_ID_PREFIX

Constructor Summary

Constructors

Constructor and Description
UTCDateBox() Creates a new UTCDateBox with the medium date format for the current locale.

Method Summary

Modifier and Type	Method and Description
com.google.gwt.event.shared.HandlerRegistration	addValueChangeHandler(com.google.gwt.event.logical.shared.ValueChangeHandler handler)
static Long	date2utc(Date date) Converts a gwt Date in the timezone of the current browser to a time in UTC.
org.uberfire.ext.widgets.common.client.common.DatePicker	getDateBox()
Long	getValue() Returns the date value specified by the DateBox measured in number of milliseconds since January 1, 1970, 00:00:00 GMT.
static Long	getValueForToday()
boolean	isEnabled()
void	setEnabled(boolean enabled)
void	setValue(Long value) Sets the value in the DateBox.
void	setValue(Long value, boolean fireEvents) Sets the value in the DateBox.
static long	timezoneOffsetMillis(Date date) Returns the timezone offset for the specified Date.
static long	trimTimeToMidnight(long time)
static Date	utc2date(Long time) Converts a time in UTC to a gwt Date object which is in the timezone of the current browser.

Methods inherited from class com.google.gwt.user.client.ui.Composite

claimElement, getWidget, initializeClaimedElement, initWidget, isAttached, onAttach, onBrowserEvent, onDetach, render, render, resolvePotentialElement, setWidget

Methods inherited from class com.google.gwt.user.client.ui.Widget

addAttachHandler, addBitlessDomHandler, addDomHandler, addHandler, asWidget, asWidgetOrNull, createHandlerManager, delegateEvent, doAttachChildren, doDetachChildren, fireEvent, getHandlerCount, getLayoutData, getParent, isOrWasAttached, onLoad, onUnload, removeFromParent, setLayoutData, sinkEvents, unsinkEvents

Methods inherited from class com.google.gwt.user.client.ui.UIObject

addStyleDependentName, addStyleName, ensureDebugId, ensureDebugId, ensureDebugId, getAbsoluteLeft, getAbsoluteTop, getElement, getOffsetHeight, getOffsetWidth, getStyleElement, getStyleName, getStyleName, getStylePrimaryName, getStylePrimaryName, getTitle, isVisible, isVisible, onEnsureDebugId, removeStyleDependentName, removeStyleName, setElement, setElement, setHeight, setPixelSize, setSize, setStyleDependentName, setStyleName, setStyleName, setStyleName, setStyleName, setStylePrimaryName, setStylePrimaryName, setTitle, setVisible, setVisible, setWidth, sinkBitlessEvent, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.google.gwt.event.shared.HasHandlers

fireEvent

Field Detail

DAY_IN_MS

public static final long DAY_IN_MS

See Also:

Constant Field Values

Constructor Detail

UTCDateBox

public UTCDateBox()

Creates a new UTCDateBox with the medium date format for the current locale.

Method Detail

getValue

public Long getValue()

Returns the date value specified by the DateBox measured in number of milliseconds since January 1, 1970, 00:00:00 GMT. This time will always correspond to midnight in GMT on the date selected.

Specified by:

getValue in interface com.google.gwt.user.client.TakesValue<Long>

Specified by:

getValue in interface com.google.gwt.user.client.ui.HasValue<Long>

Returns:

The time selected or null if no value is specified by the DateBox.

setValue

public void setValue(Long value)

Sets the value in the DateBox.

Specified by:

setValue in interface com.google.gwt.user.client.TakesValue<Long>

Specified by:

setValue in interface com.google.gwt.user.client.ui.HasValue<Long>

Parameters:

value - A time measured in the number of milliseconds since January 1, 1970, 00:00:00 GMT. This time should be at midnight in GMT for the Date selected.

If value is null or represents a negative number, the DateBox will have no value.

setValue

public void setValue(Long value,
                     boolean fireEvents)

Sets the value in the DateBox.

Specified by:

setValue in interface com.google.gwt.user.client.ui.HasValue<Long>

Parameters:

value - A time measured in the number of milliseconds since January 1, 1970, 00:00:00 GMT. This time should be at midnight in GMT for the Date selected.

If value is null or represents a negative number, the DateBox will have no value.

addValueChangeHandler

public com.google.gwt.event.shared.HandlerRegistration addValueChangeHandler(com.google.gwt.event.logical.shared.ValueChangeHandler handler)

Specified by:

addValueChangeHandler in interface com.google.gwt.event.logical.shared.HasValueChangeHandlers<Long>

isEnabled

public boolean isEnabled()

Specified by:

isEnabled in interface com.google.gwt.user.client.ui.HasEnabled

setEnabled

public void setEnabled(boolean enabled)

Specified by:

setEnabled in interface com.google.gwt.user.client.ui.HasEnabled

getDateBox

public org.uberfire.ext.widgets.common.client.common.DatePicker getDateBox()

trimTimeToMidnight

public static final long trimTimeToMidnight(long time)

utc2date

public static final Date utc2date(Long time)

Converts a time in UTC to a gwt Date object which is in the timezone of the current browser.

Returns:

The Date corresponding to the time, adjusted for the timezone of the current browser. null if the specified time is null or represents a negative number.

date2utc

public static final Long date2utc(Date date)

Converts a gwt Date in the timezone of the current browser to a time in UTC.

Returns:

A Long corresponding to the number of milliseconds since January 1, 1970, 00:00:00 GMT or null if the specified Date is null.

getValueForToday

public static final Long getValueForToday()

timezoneOffsetMillis

public static final long timezoneOffsetMillis(Date date)

Returns the timezone offset for the specified Date.