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org.eclipse.swt.custom
Class CCombo
java.lang.Object
org.eclipse.swt.widgets.Widget
org.eclipse.swt.widgets.Control
org.eclipse.swt.widgets.Scrollable
org.eclipse.swt.widgets.Composite
org.eclipse.swt.custom.CCombo
-
All Implemented Interfaces:
-
Adaptable
- public final class CCombo
- extends
Composite
The CCombo class represents a selectable user interface object
that combines a text field and a list and issues notification
when an item is selected from the list.
CCombo was written to work around certain limitations in the native
combo box. Specifically, on win32, the height of a CCombo can be set;
attempts to set the height of a Combo are ignored. CCombo can be used
anywhere that having the increased flexibility is more important than
getting native L&F, but the decision should not be taken lightly.
There is no is no strict requirement that CCombo look or behave
the same as the native combo box.
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:
- BORDER, READ_ONLY, FLAT
-
Events:
- DefaultSelection, Modify, Selection, Verify
-
Since:
- 1.2
-
See Also:
-
CCombo snippets,
SWT Example: CustomControlExample,
Sample code and further information
Field Summary
|
static int
|
LIMIT
The maximum number of characters that can be entered
into a text widget. |
Constructor Summary
|
CCombo
(
Composite 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
|
add
(
String string)
Adds the argument to the end of the receiver's list. |
void
|
add
(
String string,
int index)
Adds the argument to the receiver's list at the given
zero-relative index. |
void
|
addModifyListener
(
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 the ModifyListener
interface. |
void
|
addSelectionListener
(
SelectionListener listener)
Adds the listener to the collection of listeners who will
be notified when the user changes the receiver's selection, by sending
it one of the messages defined in the SelectionListener
interface. |
void
|
addVerifyListener
(
VerifyListener verifyListener)
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 the VerifyListener
interface. |
void
|
clearSelection
()
Sets the selection in the receiver's text field to an empty
selection starting just before the first character. |
Point
|
computeSize
(int wHint,
int hHint,
boolean changed)
Returns the preferred size of the receiver. |
void
|
deselect
(int index)
Deselects the item at the given zero-relative index in the receiver's
list. |
void
|
deselectAll
()
Deselects all selected items in the receiver's list. |
Control[]
|
getChildren
()
Returns a (possibly empty) array containing the receiver's children. |
boolean
|
getEditable
()
Gets the editable state. |
String
|
getItem
(int index)
Returns the item at the given, zero-relative index in the
receiver's list. |
int
|
getItemCount
()
Returns the number of items contained in the receiver's list. |
int
|
getItemHeight
()
Returns the height of the area which would be used to
display one of the items in the receiver's list. |
String[]
|
getItems
()
Returns an array of String s which are the items
in the receiver's list. |
boolean
|
getListVisible
()
Returns true if the receiver's list is visible,
and false otherwise. |
Point
|
getSelection
()
Returns a Point whose x coordinate is the start
of the selection in the receiver's text field, and whose y
coordinate is the end of the selection. |
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. |
int
|
getStyle
()
Returns the receiver's style information. |
String
|
getText
()
Returns a string containing a copy of the contents of the
receiver's text field. |
int
|
getTextLimit
()
Returns the maximum number of characters that the receiver's
text field is capable of holding. |
int
|
getVisibleItemCount
()
Gets the number of items that are visible in the drop
down portion of the receiver's list. |
int
|
indexOf
(
String string)
Searches 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. |
int
|
indexOf
(
String string,
int start)
Searches 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. |
void
|
remove
(int index)
Removes the item from the receiver's list at the given
zero-relative index. |
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). |
void
|
remove
(
String string)
Searches 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. |
void
|
removeAll
()
Removes all of the items from the receiver's list and clear the
contents of receiver's text field. |
void
|
removeModifyListener
(
ModifyListener listener)
Removes the listener from the collection of listeners who will
be notified when the receiver's text is modified. |
void
|
removeSelectionListener
(
SelectionListener listener)
Removes the listener from the collection of listeners who will
be notified when the user changes the receiver's selection. |
void
|
removeVerifyListener
(
VerifyListener verifyListener)
Removes the listener from the collection of listeners who will
be notified when the control is verified. |
void
|
select
(int index)
Selects the item at the given zero-relative index in the receiver's
list. |
void
|
setEditable
(boolean editable)
Sets the editable state. |
void
|
setItem
(int index,
String string)
Sets the text of the item in the receiver's list at the given
zero-relative index to the string argument. |
void
|
setItems
(
String[] items)
Sets the receiver's list to be the given array of items. |
void
|
setLayout
(
Layout layout)
Sets the layout which is associated with the receiver to be
the argument which may be null. |
void
|
setListVisible
(boolean visible)
Marks the receiver's list as visible if the argument is true ,
and marks it invisible otherwise. |
void
|
setSelection
(
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. |
void
|
setText
(
String string)
Sets the contents of the receiver's text field to the
given string. |
void
|
setTextLimit
(int limit)
Sets the maximum number of characters that the receiver's
text field is capable of holding to be the argument. |
void
|
setVisibleItemCount
(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.
Composite
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changed,
getAdapter,
getBackgroundMode,
getLayout,
getLayoutDeferred,
getTabList,
isLayoutDeferred,
layout,
layout,
layout,
layout,
setBackgroundMode,
setFocus,
setTabList
|
Methods inherited from class org.eclipse.swt.widgets.
Control
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addControlListener,
addFocusListener,
addKeyListener,
addMouseListener,
addTraverseListener,
computeSize,
forceFocus,
getBackground,
getBackgroundImage,
getBorderWidth,
getBounds,
getCursor,
getEnabled,
getFont,
getForeground,
getLayoutData,
getLocation,
getMenu,
getMonitor,
getParent,
getShell,
getSize,
getToolTipText,
getVisible,
isEnabled,
isFocusControl,
isVisible,
moveAbove,
moveBelow,
pack,
pack,
redraw,
removeControlListener,
removeFocusListener,
removeKeyListener,
removeMouseListener,
removeTraverseListener,
setBackground,
setBackgroundImage,
setBounds,
setBounds,
setCursor,
setEnabled,
setFont,
setForeground,
setLayoutData,
setLocation,
setLocation,
setMenu,
setRedraw,
setSize,
setSize,
setToolTipText,
setVisible,
toControl,
toControl,
toDisplay,
toDisplay
|
Methods inherited from class org.eclipse.swt.widgets.
Widget
|
addDisposeListener,
addListener,
checkSubclass,
checkWidget,
dispose,
getData,
getData,
getDisplay,
isDisposed,
notifyListeners,
removeDisposeListener,
removeListener,
setData,
setData,
toString
|
LIMIT
public static final int LIMIT
- The maximum number of characters that can be entered
into a text widget.
Note that this value is platform dependent, based upon
the native widget implementation.
-
See Also:
-
Constant Field Values
CCombo
public CCombo(
Composite 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 widget which will be the parent of the new instance (cannot be null) -
style - the style of widget 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
-
See Also:
-
SWT.BORDER ,
SWT.READ_ONLY ,
SWT.FLAT ,
Widget.getStyle()
getStyle
public int getStyle()
-
Description copied from class:
Widget
- Returns the receiver's style information.
Note that the value which is returned by this method may
not match the value which was provided to the constructor
when the receiver was created. This can occur when the underlying
operating system does not support a particular combination of
requested styles. For example, if the platform widget used to
implement a particular SWT widget always has scroll bars, the
result of calling this method would always have the
SWT.H_SCROLL and SWT.V_SCROLL bits set.
-
-
Overrides:
-
getStyle
in class
Widget
-
-
Returns:
- the style bits
getSelectionIndex
public 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
select
public void select(int index)
- 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:
-
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
deselect
public 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
deselectAll
public 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:
-
clearSelection()
setSelection
public void setSelection(
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.
-
-
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
getSelection
public
Point getSelection()
- Returns a
Point whose x coordinate is the start
of the selection in the receiver's text field, and whose y
coordinate is the end of the selection. The returned values
are zero-relative. An "empty" selection as indicated by
the the x and y coordinates having the same value.
-
-
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
setTextLimit
public void setTextLimit(int limit)
- Sets the maximum number of characters that the receiver's
text field is capable of holding to be the argument.
-
-
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
getTextLimit
public int getTextLimit()
- Returns the maximum number of characters that the receiver's
text field is capable of holding. If this has not been changed
by
setTextLimit() , it will be the constant
Combo.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
clearSelection
public 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
-
See Also:
-
deselectAll()
add
public void add(
String string)
- Adds 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:
-
add(String,int)
add
public void add(
String string,
int index)
- Adds 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 use add(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:
-
add(String)
remove
public 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
remove
public 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
remove
public void remove(
String string)
- Searches 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
removeAll
public 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
setItem
public void setItem(int index,
String string)
- Sets the text of the item in the receiver's list at the given
zero-relative index to the string argument. This is equivalent
to
remove 'ing the old item at the index, and then
add 'ing 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
setItems
public void setItems(
String[] items)
- Sets 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
getItem
public
String getItem(int index)
- Returns 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
getItemCount
public 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
getItemHeight
public 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
getItems
public
String[] getItems()
- Returns an array of
String s 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
setVisibleItemCount
public void setVisibleItemCount(int count)
- Sets the number of items that are visible in the drop
down portion of the receiver's list.
-
-
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
getVisibleItemCount
public int getVisibleItemCount()
- Gets the number of items that are visible in the drop
down portion of the receiver's list.
-
-
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
setListVisible
public void setListVisible(boolean visible)
- Marks the receiver's list 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
getListVisible
public boolean getListVisible()
- Returns
true if the receiver's list 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 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
indexOf
public int indexOf(
String string)
- Searches 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
indexOf
public int indexOf(
String string,
int start)
- Searches 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
setText
public void setText(
String string)
- Sets the contents of the receiver's text field to the
given string.
Note: The text field in a Combo is 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
getText
public
String getText()
- Returns a string containing a copy of the contents of the
receiver's text field.
-
-
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
setEditable
public void setEditable(boolean editable)
- Sets the editable state.
-
-
Parameters:
-
editable - the new editable 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
getEditable
public boolean getEditable()
- Gets the editable state.
-
-
Returns:
- whether or not the receiver is editable
-
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
computeSize
public
Point computeSize(int wHint,
int hHint,
boolean changed)
-
Description copied from class:
Control
- Returns 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.DEFAULT is 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 be false , so layout
manager caches can be retained.
-
-
Overrides:
-
computeSize
in class
Composite
-
addSelectionListener
public void addSelectionListener(
SelectionListener listener)
- Adds the listener to the collection of listeners who will
be notified when the user changes the receiver's selection, by sending
it one of the messages defined in the
SelectionListener
interface.
widgetSelected is called when the combo's list selection changes.
widgetDefaultSelected is typically called when ENTER is pressed the combo's text area.
-
-
Parameters:
-
listener - the listener which should be notified when the user changes the receiver's selection
-
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
removeSelectionListener
public void removeSelectionListener(
SelectionListener listener)
- Removes the listener from the collection of listeners who will
be notified when the user changes the receiver's selection.
-
-
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)
addModifyListener
public void addModifyListener(
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 the
ModifyListener
interface.
-
-
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:
-
ModifyListener ,
removeModifyListener(org.eclipse.swt.events.ModifyListener)
removeModifyListener
public void removeModifyListener(
ModifyListener listener)
- Removes 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:
-
ModifyListener ,
addModifyListener(org.eclipse.swt.events.ModifyListener)
addVerifyListener
public void addVerifyListener(
VerifyListener verifyListener)
- 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 the
VerifyListener
interface.
-
-
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:
-
VerifyListener ,
removeVerifyListener(org.eclipse.swt.events.VerifyListener)
removeVerifyListener
public void removeVerifyListener(
VerifyListener verifyListener)
- Removes the listener from the collection of listeners who will
be notified when the control is verified.
-
-
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:
-
VerifyListener ,
addVerifyListener(org.eclipse.swt.events.VerifyListener)
getChildren
public
Control[] getChildren()
-
Description copied from class:
Composite
- Returns a (possibly empty) array containing the receiver's children.
Children are returned in the order that they are drawn. The topmost
control appears at the beginning of the array. Subsequent controls
draw beneath this control and appear later in the array.
Note: This is not the actual structure used by the receiver
to maintain its list of children, so modifying the array will
not affect the receiver.
-
-
Overrides:
-
getChildren
in class
Composite
-
-
Returns:
- an array of children
-
See Also:
-
Control.moveAbove(org.eclipse.swt.widgets.Control) ,
Control.moveBelow(org.eclipse.swt.widgets.Control)
setLayout
public void setLayout(
Layout layout)
- Sets the layout which is associated with the receiver to be
the argument which may be null.
Note: No Layout can be set on this Control because it already
manages the size and position of its children.
-
-
Overrides:
-
setLayout
in class
Composite
-
-
Parameters:
-
layout - the receiver's new layout 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
Copyright (c) Innoopract Informationssysteme GmbH and others 2002, 2008. All rights reserved.
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