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Eclipse Platform
Release 3.5
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SUMMARY: NESTED | FIELD |  CONSTR |  METHOD DETAIL: FIELD |  CONSTR |  METHOD

org.eclipse.swt.widgets
Class ToolTip


java.lang.Object
  extended by 

org.eclipse.swt.widgets.Widget
      extended by 
org.eclipse.swt.widgets.ToolTip

public class ToolTip

extends 
Widget

Instances of this class represent popup windows that are used to inform or warn the user.

Styles:
BALLOON, ICON_ERROR, ICON_INFORMATION, ICON_WARNING
Events:
Selection

Note: Only one of the styles ICON_ERROR, ICON_INFORMATION, and ICON_WARNING may be specified.

IMPORTANT: This class is intended to be subclassed only within the SWT implementation.

Since:
3.2
See Also:
Tool Tips snippets, SWT Example: ControlExample, Sample code and further information
Restriction:
This class is not intended to be subclassed by clients.

Constructor Summary
ToolTip ( Shell 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 receiver is selected by the user, by sending it one of the messages defined in the SelectionListener interface.
 boolean getAutoHide ()
          Returns true if the receiver is automatically hidden by the platform, and false otherwise.
  String getMessage ()
          Returns the receiver's message, which will be an empty string if it has never been set.
  Shell getParent ()
          Returns the receiver's parent, which must be a Shell.
  String getText ()
          Returns the receiver's text, which will be an empty string if it has never been set.
 boolean getVisible ()
          Returns true if the receiver is visible, and false otherwise.
 boolean isVisible ()
          Returns true if the receiver is visible and all of the receiver's ancestors are visible and false otherwise.
 void removeSelectionListener ( SelectionListener listener)
          Removes the listener from the collection of listeners who will be notified when the receiver is selected by the user.
 void setAutoHide (boolean autoHide)
          Makes the receiver hide automatically when true, and remain visible when false.
 void setLocation (int x, int y)
          Sets the location of the receiver, which must be a tooltip, to the point specified by the arguments which are relative to the display.
 void setLocation ( Point location)
          Sets the location of the receiver, which must be a tooltip, to the point specified by the argument which is relative to the display.
 void setMessage ( String string)
          Sets the receiver's message.
 void setText ( String string)
          Sets the receiver's text.
 void setVisible (boolean visible)
          Marks the receiver as visible if the argument is true, and marks it invisible otherwise.
 
Methods inherited from class org.eclipse.swt.widgets. Widget
addDisposeListener, addListener, checkSubclass, checkWidget, dispose, getData, getData, getDisplay, getListeners, getStyle, isDisposed, isListening, notifyListeners, removeDisposeListener, removeListener, removeListener, setData, setData, toString
 
Methods inherited from class java.lang. Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

ToolTip

public ToolTip(
Shell 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.BALLOON, SWT.ICON_ERROR, SWT.ICON_INFORMATION, SWT.ICON_WARNING, 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 receiver is selected by the user, by sending it one of the messages defined in the SelectionListener interface.

widgetSelected is called when the receiver is selected. widgetDefaultSelected is not called.

Parameters:
listener - the listener which should be notified when the receiver is selected by the user
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

getAutoHide

public boolean getAutoHide()
Returns true if the receiver is automatically hidden by the platform, and false otherwise.

Returns:
the receiver's auto hide state
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

getMessage

public 
String getMessage()
Returns the receiver's message, which will be an empty string if it has never been set.

Returns:
the receiver's message
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

getParent

public 
Shell getParent()
Returns the receiver's parent, which must be a Shell.

Returns:
the receiver's parent
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

getText

public 
String getText()
Returns the receiver's text, which will be an empty string if it has never been set.

Returns:
the receiver's text
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

getVisible

public boolean getVisible()
Returns true if the receiver is visible, and false otherwise.

If one of the receiver's ancestors is not visible or some other condition makes the receiver not visible, this method may still indicate that it is considered visible even though it may not actually be showing.

Returns:
the receiver's visibility state
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

isVisible

public boolean isVisible()
Returns true if the receiver is visible and all of the receiver's ancestors are visible and false otherwise.

Returns:
the receiver's visibility state
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:
getVisible()

removeSelectionListener

public void removeSelectionListener(
SelectionListener listener)
Removes the listener from the collection of listeners who will be notified when the receiver 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)

setAutoHide

public void setAutoHide(boolean autoHide)
Makes the receiver hide automatically when true, and remain visible when false.

Parameters:
autoHide - the auto hide state
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:
getVisible(), setVisible(boolean)

setLocation

public void setLocation(int x,
                        int y)
Sets the location of the receiver, which must be a tooltip, to the point specified by the arguments which are relative to the display.

Note that this is different from most widgets where the location of the widget is relative to the parent.

Parameters:
x - the new x coordinate for the receiver
y - the new y coordinate for the receiver
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

setLocation

public void setLocation(
Point location)
Sets the location of the receiver, which must be a tooltip, to the point specified by the argument which is relative to the display.

Note that this is different from most widgets where the location of the widget is relative to the parent.

Note that the platform window manager ultimately has control over the location of tooltips.

Parameters:
location - the new location for the receiver
Throws:
IllegalArgumentException -
  • ERROR_NULL_ARGUMENT - if the point 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

setMessage

public void setMessage(
String string)
Sets the receiver's message.

Parameters:
string - the new message
Throws:
IllegalArgumentException -
  • ERROR_NULL_ARGUMENT - if the text 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

setText

public void setText(
String string)
Sets the receiver's text.

Parameters:
string - the new text
Throws:
IllegalArgumentException -
  • ERROR_NULL_ARGUMENT - if the text 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

setVisible

public void setVisible(boolean visible)
Marks the receiver as visible if the argument is true, and marks it invisible otherwise.

If one of the receiver's ancestors is not visible or some other condition makes the receiver not visible, marking it visible may not actually cause it to be displayed.

Parameters:
visible - the new visibility state
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
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Eclipse Platform
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