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java.lang.Objectorg.eclipse.swt.widgets.Widget
org.eclipse.swt.widgets.Control
org.eclipse.swt.widgets.Scrollable
org.eclipse.swt.widgets.Composite
org.eclipse.swt.widgets.DateTime
public class DateTime
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.
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.
IMPORTANT: This class is not intended to be subclassed.
Field Summary |
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Fields inherited from class org.eclipse.swt.widgets.Composite |
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embeddedHandle |
Fields inherited from class org.eclipse.swt.widgets.Widget |
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handle |
Constructor Summary | |
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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 | |
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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 |
setBackground(Color color)
Sets the receiver's background color to the color specified by the argument, or to the default system color for the control if the argument is null. |
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 |
setFont(Font font)
Sets the font that the receiver will use to paint textual information to the font specified by the argument, or to the default font for that kind of control if the argument is null. |
void |
setForeground(Color color)
Sets the receiver's foreground color to the color specified by the argument, or to the default system color for the control if the argument is null. |
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 |
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. |
void |
updateControl()
|
Methods inherited from class org.eclipse.swt.widgets.Composite |
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changed, getBackgroundMode, getChildren, getClientArea, getLayout, getLayoutDeferred, getTabList, isLayoutDeferred, layout, layout, layout, layout, setBackgroundMode, setFocus, setLayout, setLayoutDeferred, setTabList |
Methods inherited from class org.eclipse.swt.widgets.Scrollable |
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computeTrim, getBorderWidth, getHorizontalBar, getVerticalBar |
Methods inherited from class org.eclipse.swt.widgets.Widget |
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addDisposeListener, addListener, checkWidget, dispose, getData, getData, getDisplay, getListeners, getStyle, isDisposed, isListening, notifyListeners, removeDisposeListener, removeListener, removeListener, setData, setData, toString |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public DateTime(Composite parent, int style)
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.
parent
- a composite control which will be the parent of the new instance (cannot be null)style
- the style of control to construct
java.lang.IllegalArgumentException
- SWTException
- SWT.DATE
,
SWT.TIME
,
SWT.CALENDAR
,
Widget.checkSubclass()
,
Widget.getStyle()
Method Detail |
---|
public void addSelectionListener(SelectionListener listener)
SelectionListener
interface.
widgetSelected
is called when the user changes the control's value.
widgetDefaultSelected
is not called.
listener
- the listener which should be notified
java.lang.IllegalArgumentException
- SWTException
- SelectionListener
,
removeSelectionListener(org.eclipse.swt.events.SelectionListener)
,
SelectionEvent
protected void checkSubclass()
Widget
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.
checkSubclass
in class Composite
public Point computeSize(int wHint, int hHint, boolean changed)
Control
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.
computeSize
in class Composite
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
Layout
,
Control.getBorderWidth()
,
Control.getBounds()
,
Control.getSize()
,
Control.pack(boolean)
,
"computeTrim, getClientArea for controls that implement them"public int getDay()
The first day of the month is 1, and the last day depends on the month and year.
SWTException
- public int getHours()
Hours is an integer between 0 and 23.
SWTException
- public int getMinutes()
Minutes is an integer between 0 and 59.
SWTException
- public int getMonth()
The first month of the year is 0, and the last month is 11.
SWTException
- public int getSeconds()
Seconds is an integer between 0 and 59.
SWTException
- public int getYear()
The first year is 1752 and the last year is 9999.
SWTException
- public void removeSelectionListener(SelectionListener listener)
listener
- the listener which should no longer be notified
java.lang.IllegalArgumentException
- SWTException
- SelectionListener
,
addSelectionListener(org.eclipse.swt.events.SelectionListener)
public void setBackground(Color color)
Control
Note: This operation is a hint and may be overridden by the platform. For example, on Windows the background of a Button cannot be changed.
setBackground
in class Control
color
- the new color (or null)public void setFont(Font font)
Control
setFont
in class Control
font
- the new font (or null)public void setForeground(Color color)
Control
Note: This operation is a hint and may be overridden by the platform.
setForeground
in class Control
color
- the new color (or null)public void setDate(int year, int month, int day)
This is the recommended way to set the date, because setting the year, month, and day separately may result in invalid intermediate dates.
year
- an integer between 1752 and 9999month
- an integer between 0 and 11day
- a positive integer beginning with 1
SWTException
- public void setDay(int day)
The first day of the month is 1, and the last day depends on the month and year.
day
- a positive integer beginning with 1
SWTException
- public void setHours(int hours)
Hours is an integer between 0 and 23.
hours
- an integer between 0 and 23
SWTException
- public void setMinutes(int minutes)
Minutes is an integer between 0 and 59.
minutes
- an integer between 0 and 59
SWTException
- public void setMonth(int month)
The first month of the year is 0, and the last month is 11.
month
- an integer between 0 and 11
SWTException
- public void setSeconds(int seconds)
Seconds is an integer between 0 and 59.
seconds
- an integer between 0 and 59
SWTException
- public void setTime(int hours, int minutes, int seconds)
hours
- an integer between 0 and 23minutes
- an integer between 0 and 59seconds
- an integer between 0 and 59
SWTException
- public void setYear(int year)
The first year is 1752 and the last year is 9999.
year
- an integer between 1752 and 9999
SWTException
- public void updateControl()
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