Eclipse Platform
Release 4.2

org.eclipse.swt.widgets
Class DateTime

java.lang.Object
  extended by org.eclipse.swt.widgets.Widget
      extended by org.eclipse.swt.widgets.Control
          extended by org.eclipse.swt.widgets.Scrollable
              extended by org.eclipse.swt.widgets.Composite
                  extended by org.eclipse.swt.widgets.DateTime
All Implemented Interfaces:
Drawable

public class DateTime
extends Composite

Instances of this class are selectable user interface objects that allow the user to enter and modify date or time values.

Note that although this class is a subclass of Composite, it does not make sense to add children to it, or set a layout on it.

Styles:
DATE, TIME, CALENDAR, SHORT, MEDIUM, LONG, DROP_DOWN
Events:
DefaultSelection, Selection

Note: Only one of the styles DATE, TIME, or CALENDAR may be specified, and only one of the styles SHORT, MEDIUM, or LONG may be specified. The DROP_DOWN style is a HINT, and it is only valid with the DATE style.

IMPORTANT: This class is not intended to be subclassed.

Since:
3.3
See Also:
DateTime snippets, SWT Example: ControlExample, Sample code and further information
Restriction:
This class is not intended to be subclassed by clients.

Field Summary
 
Fields inherited from class org.eclipse.swt.widgets.Control
handle
 
Constructor Summary
DateTime(Composite parent, int style)
          Constructs a new instance of this class given its parent and a style value describing its behavior and appearance.
 
Method Summary
 void addSelectionListener(SelectionListener listener)
          Adds the listener to the collection of listeners who will be notified when the control is selected by the user, by sending it one of the messages defined in the SelectionListener interface.
protected  void checkSubclass()
          Checks that this class can be subclassed.
 Point computeSize(int wHint, int hHint, boolean changed)
          Returns the preferred size of the receiver.
 int getDay()
          Returns the receiver's date, or day of the month.
 int getHours()
          Returns the receiver's hours.
 int getMinutes()
          Returns the receiver's minutes.
 int getMonth()
          Returns the receiver's month.
 int getSeconds()
          Returns the receiver's seconds.
 int getYear()
          Returns the receiver's year.
 void removeSelectionListener(SelectionListener listener)
          Removes the listener from the collection of listeners who will be notified when the control is selected by the user.
 void setDate(int year, int month, int day)
          Sets the receiver's year, month, and day in a single operation.
 void setDay(int day)
          Sets the receiver's date, or day of the month, to the specified day.
 void setHours(int hours)
          Sets the receiver's hours.
 void setMinutes(int minutes)
          Sets the receiver's minutes.
 void setMonth(int month)
          Sets the receiver's month.
 void setOrientation(int orientation)
          Sets the orientation of the receiver, which must be one of the constants SWT.LEFT_TO_RIGHT or SWT.RIGHT_TO_LEFT.
 void setSeconds(int seconds)
          Sets the receiver's seconds.
 void setTime(int hours, int minutes, int seconds)
          Sets the receiver's hours, minutes, and seconds in a single operation.
 void setYear(int year)
          Sets the receiver's year.
 
Methods inherited from class org.eclipse.swt.widgets.Composite
changed, drawBackground, getBackgroundMode, getChildren, getLayout, getLayoutDeferred, getTabList, isLayoutDeferred, layout, layout, layout, layout, layout, setBackgroundMode, setFocus, setLayout, setLayoutDeferred, setTabList
 
Methods inherited from class org.eclipse.swt.widgets.Scrollable
computeTrim, getClientArea, getHorizontalBar, getScrollbarsMode, getVerticalBar
 
Methods inherited from class org.eclipse.swt.widgets.Control
addControlListener, addDragDetectListener, addFocusListener, addGestureListener, addHelpListener, addKeyListener, addMenuDetectListener, addMouseListener, addMouseMoveListener, addMouseTrackListener, addMouseWheelListener, addPaintListener, addTouchListener, addTraverseListener, computeSize, dragDetect, dragDetect, forceFocus, getAccessible, getBackground, getBackgroundImage, getBorderWidth, getBounds, getCursor, getDragDetect, getEnabled, getFont, getForeground, getLayoutData, getLocation, getMenu, getMonitor, getOrientation, getParent, getRegion, getShell, getSize, getToolTipText, getTouchEnabled, getVisible, internal_dispose_GC, internal_new_GC, isEnabled, isFocusControl, isReparentable, isVisible, moveAbove, moveBelow, pack, pack, print, redraw, redraw, removeControlListener, removeDragDetectListener, removeFocusListener, removeGestureListener, removeHelpListener, removeKeyListener, removeMenuDetectListener, removeMouseListener, removeMouseMoveListener, removeMouseTrackListener, removeMouseWheelListener, removePaintListener, removeTouchListener, removeTraverseListener, setBackground, setBackgroundImage, setBounds, setBounds, setCapture, setCursor, setDragDetect, setEnabled, setFont, setForeground, setLayoutData, setLocation, setLocation, setMenu, setParent, setRedraw, setRegion, setSize, setSize, setToolTipText, setTouchEnabled, setVisible, toControl, toControl, toDisplay, toDisplay, traverse, traverse, traverse, update
 
Methods inherited from class org.eclipse.swt.widgets.Widget
addDisposeListener, addListener, checkWidget, dispose, getData, getData, getDisplay, getListeners, getStyle, isDisposed, isListening, notifyListeners, removeDisposeListener, removeListener, removeListener, reskin, setData, setData, toString
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

DateTime

public DateTime(Composite parent,
                int style)
Constructs a new instance of this class given its parent and a style value describing its behavior and appearance.

The style value is either one of the style constants defined in class SWT which is applicable to instances of this class, or must be built by bitwise OR'ing together (that is, using the int "|" operator) two or more of those SWT style constants. The class description lists the style constants that are applicable to the class. Style bits are also inherited from superclasses.

Parameters:
parent - a composite control which will be the parent of the new instance (cannot be null)
style - the style of control to construct
Throws:
IllegalArgumentException -
  • ERROR_NULL_ARGUMENT - if the parent is null
SWTException -
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
  • ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass
See Also:
SWT.DATE, SWT.TIME, SWT.CALENDAR, SWT.SHORT, SWT.MEDIUM, SWT.LONG, SWT.DROP_DOWN, Widget.checkSubclass(), Widget.getStyle()
Method Detail

addSelectionListener

public void addSelectionListener(SelectionListener listener)
Adds the listener to the collection of listeners who will be notified when the control is selected by the user, by sending it one of the messages defined in the SelectionListener interface.

widgetSelected is called when the user changes the control's value. widgetDefaultSelected is typically called when ENTER is pressed.

Parameters:
listener - the listener which should be notified
Throws:
IllegalArgumentException -
  • ERROR_NULL_ARGUMENT - if the listener is null
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
See Also:
SelectionListener, removeSelectionListener(org.eclipse.swt.events.SelectionListener), SelectionEvent

checkSubclass

protected void checkSubclass()
Description copied from class: Widget
Checks that this class can be subclassed.

The SWT class library is intended to be subclassed only at specific, controlled points (most notably, Composite and Canvas when implementing new widgets). This method enforces this rule unless it is overridden.

IMPORTANT: By providing an implementation of this method that allows a subclass of a class which does not normally allow subclassing to be created, the implementer agrees to be fully responsible for the fact that any such subclass will likely fail between SWT releases and will be strongly platform specific. No support is provided for user-written classes which are implemented in this fashion.

The ability to subclass outside of the allowed SWT classes is intended purely to enable those not on the SWT development team to implement patches in order to get around specific limitations in advance of when those limitations can be addressed by the team. Subclassing should not be attempted without an intimate and detailed understanding of the hierarchy.

Overrides:
checkSubclass in class Composite

computeSize

public Point computeSize(int wHint,
                         int hHint,
                         boolean changed)
Description copied from class: Control
Returns the preferred size of the receiver.

The preferred size of a control is the size that it would best be displayed at. The width hint and height hint arguments allow the caller to ask a control questions such as "Given a particular width, how high does the control need to be to show all of the contents?" To indicate that the caller does not wish to constrain a particular dimension, the constant SWT.DEFAULT is passed for the hint.

If the changed flag is true, it indicates that the receiver's contents have changed, therefore any caches that a layout manager containing the control may have been keeping need to be flushed. When the control is resized, the changed flag will be false, so layout manager caches can be retained.

Overrides:
computeSize in class Composite
Parameters:
wHint - the width hint (can be SWT.DEFAULT)
hHint - the height hint (can be SWT.DEFAULT)
changed - true if the control's contents have changed, and false otherwise
Returns:
the preferred size of the control.
See Also:
Layout, Control.getBorderWidth(), Control.getBounds(), Control.getSize(), Control.pack(boolean), "computeTrim, getClientArea for controls that implement them"

getDay

public int getDay()
Returns the receiver's date, or day of the month.

The first day of the month is 1, and the last day depends on the month and year.

Returns:
a positive integer beginning with 1
Throws:
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

getHours

public int getHours()
Returns the receiver's hours.

Hours is an integer between 0 and 23.

Returns:
an integer between 0 and 23
Throws:
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

getMinutes

public int getMinutes()
Returns the receiver's minutes.

Minutes is an integer between 0 and 59.

Returns:
an integer between 0 and 59
Throws:
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

getMonth

public int getMonth()
Returns the receiver's month.

The first month of the year is 0, and the last month is 11.

Returns:
an integer between 0 and 11
Throws:
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

getSeconds

public int getSeconds()
Returns the receiver's seconds.

Seconds is an integer between 0 and 59.

Returns:
an integer between 0 and 59
Throws:
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

getYear

public int getYear()
Returns the receiver's year.

The first year is 1752 and the last year is 9999.

Returns:
an integer between 1752 and 9999
Throws:
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

removeSelectionListener

public void removeSelectionListener(SelectionListener listener)
Removes the listener from the collection of listeners who will be notified when the control is selected by the user.

Parameters:
listener - the listener which should no longer be notified
Throws:
IllegalArgumentException -
  • ERROR_NULL_ARGUMENT - if the listener is null
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
See Also:
SelectionListener, addSelectionListener(org.eclipse.swt.events.SelectionListener)

setDate

public void setDate(int year,
                    int month,
                    int day)
Sets the receiver's year, month, and day in a single operation.

This is the recommended way to set the date, because setting the year, month, and day separately may result in invalid intermediate dates.

Parameters:
year - an integer between 1752 and 9999
month - an integer between 0 and 11
day - a positive integer beginning with 1
Throws:
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
Since:
3.4

setDay

public void setDay(int day)
Sets the receiver's date, or day of the month, to the specified day.

The first day of the month is 1, and the last day depends on the month and year. If the specified day is not valid for the receiver's month and year, then it is ignored.

Parameters:
day - a positive integer beginning with 1
Throws:
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
See Also:
setDate(int, int, int)

setHours

public void setHours(int hours)
Sets the receiver's hours.

Hours is an integer between 0 and 23.

Parameters:
hours - an integer between 0 and 23
Throws:
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

setMinutes

public void setMinutes(int minutes)
Sets the receiver's minutes.

Minutes is an integer between 0 and 59.

Parameters:
minutes - an integer between 0 and 59
Throws:
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

setMonth

public void setMonth(int month)
Sets the receiver's month.

The first month of the year is 0, and the last month is 11. If the specified month is not valid for the receiver's day and year, then it is ignored.

Parameters:
month - an integer between 0 and 11
Throws:
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
See Also:
setDate(int, int, int)

setOrientation

public void setOrientation(int orientation)
Description copied from class: Control
Sets the orientation of the receiver, which must be one of the constants SWT.LEFT_TO_RIGHT or SWT.RIGHT_TO_LEFT.

Overrides:
setOrientation in class Control
Parameters:
orientation - new orientation style

setSeconds

public void setSeconds(int seconds)
Sets the receiver's seconds.

Seconds is an integer between 0 and 59.

Parameters:
seconds - an integer between 0 and 59
Throws:
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

setTime

public void setTime(int hours,
                    int minutes,
                    int seconds)
Sets the receiver's hours, minutes, and seconds in a single operation.

Parameters:
hours - an integer between 0 and 23
minutes - an integer between 0 and 59
seconds - an integer between 0 and 59
Throws:
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
Since:
3.4

setYear

public void setYear(int year)
Sets the receiver's year.

The first year is 1752 and the last year is 9999. If the specified year is not valid for the receiver's day and month, then it is ignored.

Parameters:
year - an integer between 1752 and 9999
Throws:
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
See Also:
setDate(int, int, int)

Eclipse Platform
Release 4.2

Guidelines for using Eclipse APIs.

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