Class TabFolder
 The item children that may be added to instances of this class
 must be of type TabItem.
 Control children are created and then set into a
 tab item using TabItem#setControl.
 
 Note that although this class is a subclass of Composite,
 it does not make sense to set a layout on it.
 
- Styles:
- TOP, BOTTOM
- Events:
- Selection
Note: Only one of the styles TOP and BOTTOM may be specified.
IMPORTANT: This class is not intended to be subclassed.
- Since:
- 1.0
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Constructor SummaryConstructors
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Method SummaryModifier and TypeMethodDescriptionvoidaddSelectionListener(SelectionListener listener) Adds the listener to the collection of listeners who will be notified when the receiver's selection changes, by sending it one of the messages defined in theSelectionListenerinterface.computeSize(int wHint, int hHint, boolean changed) Returns the preferred size of the receiver.computeTrim(int x, int y, int width, int height) Given a desired client area for the receiver (as described by the arguments), returns the bounding rectangle which would be required to produce that client area.<T> TgetAdapter(Class<T> adapter) Implementation of theAdaptableinterface.Returns a rectangle which describes the area of the receiver which is capable of displaying data (that is, not covered by the "trimmings").getItem(int index) Returns the item at the given, zero-relative index in the receiver.Returns the tab item at the given point in the receiver or null if no such item exists.intReturns the number of items contained in the receiver.TabItem[]getItems()Returns an array ofTabItems which are the items in the receiver.TabItem[]Returns an array ofTabItems that are currently selected in the receiver.intReturns the zero-relative index of the item which is currently selected in the receiver, or -1 if no item is selected.intSearches the receiver's list starting at the first item (index 0) until an item is found that is equal to the argument, and returns the index of that item.voidlayout()If the receiver has a layout, asks the layout to lay out (that is, set the size and location of) the receiver's children.voidremoveSelectionListener(SelectionListener listener) Removes the listener from the collection of listeners who will be notified when the receiver's selection changes.voidsetSelection(int index) Selects the item at the given zero-relative index in the receiver.voidsetSelection(TabItem item) Sets the receiver's selection to the given item.voidsetSelection(TabItem[] items) Sets the receiver's selection to be the given array of items.Methods inherited from class org.eclipse.swt.widgets.Compositechanged, getBackgroundMode, getChildren, getLayout, getLayoutDeferred, getTabList, isLayoutDeferred, layout, layout, layout, layout, setBackgroundMode, setFocus, setLayout, setLayoutDeferred, setTabListMethods inherited from class org.eclipse.swt.widgets.ScrollablegetHorizontalBar, getVerticalBarMethods inherited from class org.eclipse.swt.widgets.ControladdControlListener, addDragDetectListener, addFocusListener, addGestureListener, addHelpListener, addKeyListener, addMenuDetectListener, addMouseListener, addTouchListener, addTraverseListener, computeSize, forceFocus, getAccessible, getBackground, getBackgroundImage, getBorderWidth, getBounds, getCursor, getEnabled, getFont, getForeground, getLayoutData, getLocation, getMenu, getMonitor, getOrientation, getParent, getShell, getSize, getToolTipText, getTouchEnabled, getVisible, isEnabled, isFocusControl, isReparentable, isVisible, moveAbove, moveBelow, pack, pack, redraw, redraw, removeControlListener, removeDragDetectListener, removeFocusListener, removeGestureListener, removeHelpListener, removeKeyListener, removeMenuDetectListener, removeMouseListener, removeTouchListener, removeTraverseListener, requestLayout, setBackground, setBackgroundImage, setBounds, setBounds, setCursor, setData, setEnabled, setFont, setForeground, setLayoutData, setLocation, setLocation, setMenu, setOrientation, setParent, setRedraw, setSize, setSize, setToolTipText, setTouchEnabled, setVisible, toControl, toControl, toDisplay, toDisplay, updateMethods inherited from class org.eclipse.swt.widgets.WidgetaddDisposeListener, addListener, checkSubclass, checkWidget, dispose, getData, getData, getDisplay, getListeners, getStyle, isDisposed, isListening, notifyListeners, removeDisposeListener, removeListener, removeListener, reskin, setData, toString
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Constructor Details- 
TabFolderConstructs 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 SWTwhich is applicable to instances of this class, or must be built by bitwise OR'ing together (that is, using theint"|" operator) two or more of thoseSWTstyle 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:
 
 
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Method Details- 
getAdapterDescription copied from class:WidgetImplementation of theAdaptableinterface.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:
- getAdapterin interface- Adaptable
- Overrides:
- getAdapterin class- Composite
- Parameters:
- adapter- the lookup class
- Returns:
- an object that can be cast to the given class or nullif there is no adapter associated with the given class.
 
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getItemsReturns an array ofTabItems which are the items in the receiver.Note: This is not the actual structure used by the receiver to maintain its list of items, so modifying the array will not affect the receiver. - Returns:
- the items in 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
 
 
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getItemReturns the item at the given, zero-relative index in the receiver. Throws an exception if the index is out of range.- Parameters:
- index- the index of the item to return
- Returns:
- the item at the given index
- Throws:
- IllegalArgumentException-- ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)
 
- 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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getItemReturns the tab item at the given point in the receiver or null if no such item exists. The point is in the coordinate system of the receiver.- Parameters:
- point- the point used to locate the item
- Returns:
- the tab item at the given point, or null if the point is not in a tab item
- 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
 
- Since:
- 1.3
 
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getItemCountpublic int getItemCount()Returns the number of items contained in the receiver.- Returns:
- the number of items
- 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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indexOfSearches the receiver's list starting at the first item (index 0) until an item is found that is equal to the argument, and returns the index of that item. If no item is found, returns -1.- Parameters:
- item- the search item
- Returns:
- the index of the item
- Throws:
- IllegalArgumentException-- ERROR_NULL_ARGUMENT - if the string 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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getSelectionReturns an array ofTabItems that are currently selected in the receiver. An empty array indicates that no items are selected.Note: This is not the actual structure used by the receiver to maintain its selection, so modifying the array will not affect the receiver. - Returns:
- an array representing the selection
- 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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setSelectionSets the receiver's selection to the given item. The current selected is first cleared, then the new item is selected.- Parameters:
- item- the item to select
- Throws:
- IllegalArgumentException-- ERROR_NULL_ARGUMENT - if the item 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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setSelectionSets the receiver's selection to be the given array of items. The current selected is first cleared, then the new items are selected.- Parameters:
- items- the array of items
- Throws:
- IllegalArgumentException-- ERROR_NULL_ARGUMENT - if the items array 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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setSelectionpublic void setSelection(int index) Selects the item at the given zero-relative index in the receiver. If the item at the index was already selected, it remains selected. The current selection is first cleared, then the new items are selected. Indices that are out of range are ignored.- Parameters:
- index- the index of the item to select
- 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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getSelectionIndexpublic int getSelectionIndex()Returns the zero-relative index of the item which is currently selected in the receiver, or -1 if no item is selected.- Returns:
- the index of the selected item
- 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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layoutpublic void layout()Description copied from class:CompositeIf the receiver has a layout, asks the layout to lay out (that is, set the size and location of) the receiver's children. If the receiver does not have a layout, do nothing.Use of this method is discouraged since it is the least-efficient way to trigger a layout. The use of layout(true)discards all cached layout information, even from controls which have not changed. It is much more efficient to invokeControl.requestLayout()on every control which has changed in the layout than it is to invoke this method on the layout itself.This is equivalent to calling layout(true).Note: Layout is different from painting. If a child is moved or resized such that an area in the parent is exposed, then the parent will paint. If no child is affected, the parent will not paint. 
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getClientAreaDescription copied from class:ScrollableReturns a rectangle which describes the area of the receiver which is capable of displaying data (that is, not covered by the "trimmings").- Overrides:
- getClientAreain class- Scrollable
- Returns:
- the client area
- See Also:
 
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computeTrimDescription copied from class:ScrollableGiven a desired client area for the receiver (as described by the arguments), returns the bounding rectangle which would be required to produce that client area.In other words, it returns a rectangle such that, if the receiver's bounds were set to that rectangle, the area of the receiver which is capable of displaying data (that is, not covered by the "trimmings") would be the rectangle described by the arguments (relative to the receiver's parent). - Overrides:
- computeTrimin class- Scrollable
- Parameters:
- x- the desired x coordinate of the client area
- y- the desired y coordinate of the client area
- width- the desired width of the client area
- height- the desired height of the client area
- Returns:
- the required bounds to produce the given client area
- See Also:
 
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computeSizeDescription copied from class:ControlReturns 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.DEFAULTis 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 befalse, so layout manager caches can be retained.- Overrides:
- computeSizein class- Composite
- Parameters:
- wHint- the width hint (can be- SWT.DEFAULT)
- hHint- the height hint (can be- SWT.DEFAULT)
- changed-- trueif the control's contents have changed, and- falseotherwise
- 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"
 
 
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addSelectionListenerAdds the listener to the collection of listeners who will be notified when the receiver's selection changes, by sending it one of the messages defined in theSelectionListenerinterface.When widgetSelectedis called, the item field of the event object is valid.widgetDefaultSelectedis not called.- 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:
 
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removeSelectionListenerRemoves the listener from the collection of listeners who will be notified when the receiver's selection changes.- 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:
 
 
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