Class TaskItem
- java.lang.Object
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- org.eclipse.swt.widgets.Widget
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- org.eclipse.swt.widgets.Item
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- org.eclipse.swt.widgets.TaskItem
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- All Implemented Interfaces:
Adaptable
public class TaskItem extends Item
Instances of this class represent a task item.- Styles:
- (none)
- Events:
- (none)
- Since:
- 1.4
- See Also:
- Sample code and further information
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Menu
getMenu()
Returns the receiver's pop up menu if it has one, or null if it does not.Image
getOverlayImage()
Returns the receiver's overlay image if it has one, or null if it does not.java.lang.String
getOverlayText()
Returns the receiver's overlay text, which will be an empty string if it has never been set.TaskBar
getParent()
Returns the receiver's parent, which must be aTaskBar
.int
getProgress()
Returns the receiver's progress.int
getProgressState()
Returns the receiver's progress state.void
setMenu(Menu menu)
Sets the receiver's pop up menu to the argument.void
setOverlayImage(Image overlayImage)
Sets the receiver's overlay image, which may be null indicating that no image should be displayed.void
setOverlayText(java.lang.String overlayText)
Sets the receiver's overlay text.void
setProgress(int progress)
Sets the receiver's progress, the progress represents a percentage and should be in range from 0 to 100.void
setProgressState(int progressState)
Sets the receiver's progress state, the state can be one of the following:-
Methods inherited from class org.eclipse.swt.widgets.Widget
addDisposeListener, addListener, checkSubclass, checkWidget, dispose, getAdapter, getData, getData, getDisplay, getListeners, getStyle, isDisposed, isListening, notifyListeners, removeDisposeListener, removeListener, removeListener, reskin, setData, setData, toString
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Method Detail
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getMenu
public Menu getMenu()
Returns the receiver's pop up menu if it has one, or null if it does not.- Returns:
- the receiver's menu
- 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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getOverlayImage
public Image getOverlayImage()
Returns the receiver's overlay image if it has one, or null if it does not.- Returns:
- the receiver's overlay image
- 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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getOverlayText
public java.lang.String getOverlayText()
Returns the receiver's overlay text, which will be an empty string if it has never been set.- Returns:
- the receiver's overlay 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
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getParent
public TaskBar getParent()
Returns the receiver's parent, which must be aTaskBar
.- 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
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getProgress
public int getProgress()
Returns the receiver's progress.- Returns:
- the receiver's progress
- 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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getProgressState
public int getProgressState()
Returns the receiver's progress state.- Returns:
- the receiver's progress 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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setMenu
public void setMenu(Menu menu)
Sets the receiver's pop up menu to the argument. The way the menu is shown is platform specific.This feature might not be available for the receiver on all platforms. The application code can check if it is supported by calling the respective get method. When the feature is not available, the get method will always return the NULL.
For better cross platform support, the application code should set this feature on the
TaskItem
for application.
On Windows, this feature will only work on RCP applications.The menu should be fully created before this method is called. Dynamic changes to the menu after the method is called will not be reflected in the native menu.
- Parameters:
menu
- the new pop up menu- Throws:
java.lang.IllegalArgumentException
-- ERROR_MENU_NOT_POP_UP - the menu is not a pop up menu
- ERROR_INVALID_ARGUMENT - if the menu has been disposed
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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setOverlayImage
public void setOverlayImage(Image overlayImage)
Sets the receiver's overlay image, which may be null indicating that no image should be displayed. The bounds for the overlay image is determined by the platform and in general it should be a small image.This feature might not be available for the receiver on all platforms. The application code can check if it is supported by calling the respective get method. When the feature is not available, the get method will always return the NULL.
For better cross platform support, the application code should first try to set this feature on the
TaskItem
for the main shell then on theTaskItem
for the application.- Parameters:
overlayImage
- the new overlay image (may be null)- Throws:
java.lang.IllegalArgumentException
-- ERROR_INVALID_ARGUMENT - if the overlayImage has been disposed
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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setOverlayText
public void setOverlayText(java.lang.String overlayText)
Sets the receiver's overlay text. The space available to display the overlay text is platform dependent and in general it should be no longer than a few characters.This feature might not be available for the receiver on all platforms. The application code can check if it is supported by calling the respective get method. When the feature is not available, the get method will always return an empty string.
For better cross platform support, the application code should first try to set this feature on the
TaskItem
for the main shell then on theTaskItem
for the application.- Parameters:
overlayText
- the new overlay text- Throws:
java.lang.IllegalArgumentException
-- ERROR_NULL_ARGUMENT - if the overlayText 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
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setProgress
public void setProgress(int progress)
Sets the receiver's progress, the progress represents a percentage and should be in range from 0 to 100. The progress is only shown when the progress state is different thanSWT#DEFAULT
.This feature might not be available for the receiver on all platforms. The application code can check if it is supported by calling the respective get method. When the feature is not available, the get method will always return zero.
For better cross platform support, the application code should first try to set this feature on the
TaskItem
for the main shell then on theTaskItem
for the application.- Parameters:
progress
- the new progress- 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
setProgressState(int)
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setProgressState
public void setProgressState(int progressState)
Sets the receiver's progress state, the state can be one of the following: The percentage of progress shown by the statesSWT#NORMAL
,SWT#PAUSED
,SWT#ERROR
is set withsetProgress()
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The stateSWT#DEFAULT
indicates that no progress should be shown.This feature might not be available for the receiver on all platforms. The application code can check if it is supported by calling the respective get method. When the feature is not available, the get method will always return
SWT#DEFAULT
.For better cross platform support, the application code should first try to set this feature on the
TaskItem
for the main shell then on theTaskItem
for the application.- Parameters:
progressState
- the new progress 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
setProgress(int)
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