Package org.eclipse.swt.widgets

Class TabItem

java.lang.Object

org.eclipse.swt.widgets.Widget

org.eclipse.swt.widgets.Item

org.eclipse.swt.widgets.TabItem

All Implemented Interfaces:

Adaptable

public class TabItem
extends Item

Instances of this class represent a selectable user interface object corresponding to a tab for a page in a tab folder.

Styles:

(none)

Events:

(none)

IMPORTANT: This class is not intended to be subclassed.

Constructor Summary

Constructors

Constructor	Description
TabItem(TabFolder parent, int style)	Constructs a new instance of this class given its parent (which must be a TabFolder) and a style value describing its behavior and appearance.
TabItem(TabFolder parent, int style, int index)	Constructs a new instance of this class given its parent (which must be a TabFolder), a style value describing its behavior and appearance, and the index at which to place it in the items maintained by its parent.

Method Summary

Modifier and Type	Method	Description
<T> T	getAdapter(Class<T> adapter)	Implementation of the Adaptable interface.
Rectangle	getBounds()	Returns a rectangle describing the receiver's size and location relative to its parent.
Control	getControl()	Returns the control that is used to fill the client area of the tab folder when the user selects the tab item.
TabFolder	getParent()	Returns the receiver's parent, which must be a TabFolder.
String	getToolTipText()	Returns the receiver's tool tip text, or null if it has not been set.
void	setControl(Control control)	Sets the control that is used to fill the client area of the tab folder when the user selects the tab item.
void	setData(String key, Object value)	Sets the application defined property of the receiver with the specified name to the given value.
void	setImage(Image image)	Sets the receiver's image to the argument, which may be null indicating that no image should be displayed.
void	setToolTipText(String toolTipText)	Sets the receiver's tool tip text to the argument, which may be null indicating that no tool tip text should be shown.

Methods inherited from class org.eclipse.swt.widgets.Item

getImage, getText, setText

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, reskin, setData, toString

Methods inherited from class java.lang.Object

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

Constructor Details

TabItem

public TabItem(TabFolder parent,
 int style)

Constructs a new instance of this class given its parent (which must be a TabFolder) and a style value describing its behavior and appearance. The item is added to the end of the items maintained by its parent.

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
• Widget.checkSubclass()
• Widget.getStyle()

TabItem

public TabItem(TabFolder parent,
 int style,
 int index)

Constructs a new instance of this class given its parent (which must be a TabFolder), a style value describing its behavior and appearance, and the index at which to place it in the items maintained by its parent.

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

index - the zero-relative index to store the receiver in its parent

Throws:

IllegalArgumentException -

• ERROR_NULL_ARGUMENT - if the parent is null
• ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the parent (inclusive)

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
• Widget.checkSubclass()
• Widget.getStyle()

Method Details

getParent

public TabFolder getParent()

Returns the receiver's parent, which must be a TabFolder.

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

getControl

public Control getControl()

Returns the control that is used to fill the client area of the tab folder when the user selects the tab item. If no control has been set, return null.

Returns:

the control

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

setControl

public void setControl(Control control)

Sets the control that is used to fill the client area of the tab folder when the user selects the tab item.

Parameters:

control - the new control (or null)

Throws:

IllegalArgumentException -

• ERROR_INVALID_ARGUMENT - if the control has been disposed
• ERROR_INVALID_PARENT - if the control is not in the same widget tree

SWTException -

• ERROR_WIDGET_DISPOSED - if the receiver has been disposed
• ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

getBounds

public Rectangle getBounds()

Returns a rectangle describing the receiver's size and location relative to its parent.

Returns:

the receiver's bounding rectangle

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:

1.3

setImage

public void setImage(Image image)

Description copied from class: Item

Sets the receiver's image to the argument, which may be null indicating that no image should be displayed.

Overrides:

setImage in class Item

Parameters:

image - the image to display on the receiver (may be null)

setToolTipText

public void setToolTipText(String toolTipText)

Sets the receiver's tool tip text to the argument, which may be null indicating that no tool tip text should be shown.

Parameters:

toolTipText - the new tool tip text (or null)

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:

1.2

getToolTipText

public String getToolTipText()

Returns the receiver's tool tip text, or null if it has not been set.

Returns:

the receiver's tool tip 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

Since:

1.2

setData

public void setData(String key,
 Object value)

Description copied from class: Widget

Sets the application defined property of the receiver with the specified name to the given value.

Applications may associate arbitrary objects with the receiver in this fashion. If the objects stored in the properties need to be notified when the widget is disposed of, it is the application's responsibility to hook the Dispose event on the widget and do so.

Overrides:

setData in class Widget

Parameters:

key - the name of the property

value - the new value for the property

See Also:

• Widget.getData(String)

getAdapter

public <T> T getAdapter(Class<T> adapter)

Description copied from class: Widget

Implementation of the Adaptable interface.

IMPORTANT: This method is not part of the RWT public API. It is marked public only so that it can be shared within the packages provided by RWT. It should never be accessed from application code.

Specified by:

getAdapter in interface Adaptable

Overrides:

getAdapter in class Widget

Parameters:

adapter - the lookup class

Returns:

an object that can be cast to the given class or null if there is no adapter associated with the given class.