Class Combo
Combos are used in the same place
 where a single selection List widget could
 be used but space is limited. A Combo takes
 less space than a List widget and shows
 similar information.
 
 Note: Since Combos can contain both a list
 and an editable text field, it is possible to confuse methods
 which access one versus the other (compare for example,
 clearSelection() and deselectAll()).
 The API documentation is careful to indicate either "the
 receiver's list" or the "the receiver's text field" to
 distinguish between the two cases.
 
 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.
 
- Styles:
- DROP_DOWN, READ_ONLY
- Events:
- DefaultSelection, Modify, Selection
IMPORTANT: This class is not intended to be subclassed.
- Since:
- 1.0
- See Also:
- 
Field SummaryFieldsModifier and TypeFieldDescriptionstatic final intThe maximum number of characters that can be entered into a text widget.
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Constructor SummaryConstructors
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Method SummaryModifier and TypeMethodDescriptionvoidAdds the argument to the end of the receiver's list.voidAdds the argument to the receiver's list at the given zero-relative index.voidaddModifyListener(ModifyListener listener) Adds the listener to the collection of listeners who will be notified when the receiver's text is modified, by sending it one of the messages defined in theModifyListenerinterface.voidaddSelectionListener(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.voidaddVerifyListener(VerifyListener listener) Adds the listener to the collection of listeners who will be notified when the receiver's text is verified, by sending it one of the messages defined in theVerifyListenerinterface.voidSets the selection in the receiver's text field to an empty selection starting just before the first character.computeSize(int wHint, int hHint, boolean changed) Returns the preferred size of the receiver.voiddeselect(int index) Deselects the item at the given zero-relative index in the receiver's list.voidDeselects all selected items in the receiver's list.<T> TgetAdapter(Class<T> adapter) Implementation of theAdaptableinterface.getItem(int index) Returns the item at the given, zero-relative index in the receiver's list.intReturns the number of items contained in the receiver's list.intReturns the height of the area which would be used to display one of the items in the receiver's list.String[]getItems()Returns a (possibly empty) array ofStrings which are the items in the receiver's list.booleanReturnstrueif the receiver's list is visible, andfalseotherwise.Returns aPointwhose x coordinate is the character position representing the start of the selection in the receiver's text field, and whose y coordinate is the character position representing the end of the selection.intReturns the zero-relative index of the item which is currently selected in the receiver's list, or -1 if no item is selected.getText()Returns a string containing a copy of the contents of the receiver's text field, or an empty string if there are no contents.intReturns the height of the receivers's text field.intReturns the maximum number of characters that the receiver's text field is capable of holding.intGets the number of items that are visible in the drop down portion of the receiver's list.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.intSearches the receiver's list starting at the given, zero-relative index until an item is found that is equal to the argument, and returns the index of that item.voidremove(int index) Removes the item from the receiver's list at the given zero-relative index.voidremove(int start, int end) Removes the items from the receiver's list which are between the given zero-relative start and end indices (inclusive).voidSearches the receiver's list starting at the first item until an item is found that is equal to the argument, and removes that item from the list.voidRemoves all of the items from the receiver's list and clear the contents of receiver's text field.voidremoveModifyListener(ModifyListener listener) Removes the listener from the collection of listeners who will be notified when the receiver's text is modified.voidremoveSelectionListener(SelectionListener listener) Removes the listener from the collection of listeners who will be notified when the receiver's selection changes.voidremoveVerifyListener(VerifyListener listener) Removes the listener from the collection of listeners who will be notified when the control is verified.voidselect(int selectionIndex) Selects the item at the given zero-relative index in the receiver's list.voidSets the text of the item in the receiver's list at the given zero-relative index to the string argument.voidSets the receiver's list to be the given array of items.voidsetListVisible(boolean visible) Marks the receiver's list as visible if the argument istrue, and marks it invisible otherwise.voidsetSelection(Point selection) Sets the selection in the receiver's text field to the range specified by the argument whose x coordinate is the start of the selection and whose y coordinate is the end of the selection.voidSets the contents of the receiver's text field to the given string.voidsetTextLimit(int limit) Sets the maximum number of characters that the receiver's text field is capable of holding to be the argument.voidsetVisibleItemCount(int count) Sets the number of items that are visible in the drop down portion of the receiver's list.Methods inherited from class org.eclipse.swt.widgets.Compositechanged, getBackgroundMode, getChildren, getLayout, getLayoutDeferred, getTabList, isLayoutDeferred, layout, layout, layout, layout, layout, setBackgroundMode, setFocus, setLayout, setLayoutDeferred, setTabListMethods inherited from class org.eclipse.swt.widgets.ScrollablecomputeTrim, getClientArea, getHorizontalBar, 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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Field Details- 
LIMITpublic static final int LIMITThe maximum number of characters that can be entered into a text widget.- Since:
- 1.3
- See Also:
 
 
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Constructor Details- 
ComboConstructs 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- 
getSelectionIndexpublic int getSelectionIndex()Returns the zero-relative index of the item which is currently selected in the receiver's list, 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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selectpublic void select(int selectionIndex) Selects the item at the given zero-relative index in the receiver's list. If the item at the index was already selected, it remains selected. Indices that are out of range are ignored.- Parameters:
- selectionIndex- 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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deselectpublic void deselect(int index) Deselects the item at the given zero-relative index in the receiver's list. If the item at the index was already deselected, it remains deselected. Indices that are out of range are ignored.- Parameters:
- index- the index of the item to deselect
- 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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deselectAllpublic void deselectAll()Deselects all selected items in the receiver's list.Note: To clear the selection in the receiver's text field, use clearSelection().- 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:
 
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setSelectionSets the selection in the receiver's text field to the range specified by the argument whose x coordinate is the start of the selection and whose y coordinate is the end of the selection.- Parameters:
- selection- a point representing the new selection start and end
- 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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getSelectionReturns aPointwhose x coordinate is the character position representing the start of the selection in the receiver's text field, and whose y coordinate is the character position representing the end of the selection. An "empty" selection is indicated by the x and y coordinates having the same value.Indexing is zero based. The range of a selection is from 0..N where N is the number of characters in the widget. - Returns:
- a point representing the selection start and end
- 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
 
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clearSelectionpublic void clearSelection()Sets the selection in the receiver's text field to an empty selection starting just before the first character. If the text field is editable, this has the effect of placing the i-beam at the start of the text.Note: To clear the selected items in the receiver's list, use deselectAll().- 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
- See Also:
 
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addAdds the argument to the end of the receiver's list.- Parameters:
- string- the new 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
 
- See Also:
 
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addAdds the argument to the receiver's list at the given zero-relative index.Note: To add an item at the end of the list, use the result of calling getItemCount()as the index or useadd(String).- Parameters:
- string- the new item
- index- the index for the item
- Throws:
- IllegalArgumentException-- ERROR_NULL_ARGUMENT - if the string is null
- ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list (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
 
- See Also:
 
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removepublic void remove(int index) Removes the item from the receiver's list at the given zero-relative index.- Parameters:
- index- the index for the item
- 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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removepublic void remove(int start, int end) Removes the items from the receiver's list which are between the given zero-relative start and end indices (inclusive).- Parameters:
- start- the start of the range
- end- the end of the range
- Throws:
- IllegalArgumentException-- ERROR_INVALID_RANGE - if either the start or end are 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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removeSearches the receiver's list starting at the first item until an item is found that is equal to the argument, and removes that item from the list.- Parameters:
- string- the item to remove
- Throws:
- IllegalArgumentException-- ERROR_NULL_ARGUMENT - if the string is null
- ERROR_INVALID_ARGUMENT - if the string is not found in the list
 
- 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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removeAllpublic void removeAll()Removes all of the items from the receiver's list and clear the contents of receiver's text field.- 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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setItemSets the text of the item in the receiver's list at the given zero-relative index to the string argument. This is equivalent to removing the old item at the index, and then adding the new item at that index.- Parameters:
- index- the index for the item
- string- the new text for the item
- Throws:
- IllegalArgumentException-- ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)
- 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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setItemsSets the receiver's list to be the given array of items.- Parameters:
- items- the array of items
- Throws:
- IllegalArgumentException-- ERROR_NULL_ARGUMENT - if the items array is null
- ERROR_INVALID_ARGUMENT - if an item in 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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getItemReturns the item at the given, zero-relative index in the receiver's list. 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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getItemsReturns a (possibly empty) array ofStrings which are the items in the receiver's list.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's list
- 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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getItemCountpublic int getItemCount()Returns the number of items contained in the receiver's list.- 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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getItemHeightpublic int getItemHeight()Returns the height of the area which would be used to display one of the items in the receiver's list.- Returns:
- the height of one 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
 
- Since:
- 1.3
 
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setVisibleItemCountpublic void setVisibleItemCount(int count) Sets the number of items that are visible in the drop down portion of the receiver's list.Note: This operation is a hint and is not supported on platforms that do not have this concept. - Parameters:
- count- the new number of items to be visible
- 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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getVisibleItemCountpublic int getVisibleItemCount()Gets the number of items that are visible in the drop down portion of the receiver's list.Note: This operation is a hint and is not supported on platforms that do not have this concept. - Returns:
- the number of items that are visible
- 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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setListVisiblepublic void setListVisible(boolean visible) Marks the receiver's list as visible if the argument istrue, 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
 
- Since:
- 1.3
 
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getListVisiblepublic boolean getListVisible()Returnstrueif the receiver's list is visible, andfalseotherwise.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 list'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
 
- Since:
- 1.3
 
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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:
- string- 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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indexOfSearches the receiver's list starting at the given, zero-relative index until an item is found that is equal to the argument, and returns the index of that item. If no item is found or the starting index is out of range, returns -1.- Parameters:
- string- the search item
- start- the zero-relative index at which to begin the search
- 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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getTextReturns a string containing a copy of the contents of the receiver's text field, or an empty string if there are no contents.- 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
 
 
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setTextSets the contents of the receiver's text field to the given string.Note: The text field in a Combois typically only capable of displaying a single line of text. Thus, setting the text to a string containing line breaks or other special characters will probably cause it to display incorrectly.- Parameters:
- string- the new text
- 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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getTextLimitpublic int getTextLimit()Returns the maximum number of characters that the receiver's text field is capable of holding. If this has not been changed bysetTextLimit(), it will be the constantCombo.LIMIT.- Returns:
- the text limit
- 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
- See Also:
 
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setTextLimitpublic void setTextLimit(int limit) Sets the maximum number of characters that the receiver's text field is capable of holding to be the argument.To reset this value to the default, use setTextLimit(Combo.LIMIT). Specifying a limit value larger thanCombo.LIMITsets the receiver's limit toCombo.LIMIT.- Parameters:
- limit- new text limit
- Throws:
- IllegalArgumentException-- ERROR_CANNOT_BE_ZERO - if the limit is zero
 
- 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
- See Also:
 
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getTextHeightpublic int getTextHeight()Returns the height of the receivers's text field.- Returns:
- the text height
- 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
 
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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.widgetSelectedis called when the combo's list selection changes.widgetDefaultSelectedis typically called when ENTER is pressed the combo's text area.- 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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addModifyListenerAdds the listener to the collection of listeners who will be notified when the receiver's text is modified, by sending it one of the messages defined in theModifyListenerinterface.- 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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removeModifyListenerRemoves the listener from the collection of listeners who will be notified when the receiver's text is modified.- 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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addVerifyListenerAdds the listener to the collection of listeners who will be notified when the receiver's text is verified, by sending it one of the messages defined in theVerifyListenerinterface.- 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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removeVerifyListenerRemoves the listener from the collection of listeners who will be notified when the control is verified.- 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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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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