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java.lang.Object org.eclipse.swt.widgets.Widget org.eclipse.swt.widgets.Item org.eclipse.swt.widgets.TreeColumn
public class TreeColumn
Instances of this class represent a column in a tree widget.
Note: Only one of the styles LEFT, RIGHT and CENTER may be specified.
IMPORTANT: This class is not intended to be subclassed.
Constructor Summary | |
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TreeColumn(Tree parent,
int style)
Constructs a new instance of this class given its parent (which must be a Tree ) and a style value describing its behavior and
appearance. |
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TreeColumn(Tree parent,
int style,
int index)
Constructs a new instance of this class given its parent (which must be a Tree ), 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 | ||
---|---|---|
void |
addControlListener(ControlListener listener)
Adds the listener to the collection of listeners who will be notified when the control is moved or resized, by sending it one of the messages defined in the ControlListener interface. |
|
void |
addSelectionListener(SelectionListener listener)
Adds the listener to the collection of listeners who will be notified when the control is selected by the user, by sending it one of the messages defined in the SelectionListener interface. |
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void |
dispose()
Disposes of the operating system resources associated with the receiver and all its descendents. |
|
|
getAdapter(java.lang.Class<T> adapter)
Implementation of the Adaptable interface. |
|
int |
getAlignment()
Returns a value which describes the position of the text or image in the receiver. |
|
boolean |
getMoveable()
Gets the moveable attribute. |
|
Tree |
getParent()
Returns the receiver's parent, which must be a Tree . |
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boolean |
getResizable()
Gets the resizable attribute. |
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java.lang.String |
getToolTipText()
Returns the receiver's tool tip text, or null if it has not been set. |
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int |
getWidth()
Gets the width of the receiver. |
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void |
pack()
Causes the receiver to be resized to its preferred size. |
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void |
removeControlListener(ControlListener listener)
Removes the listener from the collection of listeners who will be notified when the control is moved or resized. |
|
void |
removeSelectionListener(SelectionListener listener)
Removes the listener from the collection of listeners who will be notified when the control is selected by the user. |
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void |
setAlignment(int alignment)
Controls how text and images will be displayed in the receiver. |
|
void |
setData(java.lang.String key,
java.lang.Object value)
Sets the application defined property of the receiver with the specified name to the given value. |
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void |
setImage(Image image)
Sets the receiver's image to the argument, which may be null indicating that no image should be displayed. |
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void |
setMoveable(boolean moveable)
Sets the moveable attribute. |
|
void |
setResizable(boolean value)
Sets the resizable attribute. |
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void |
setText(java.lang.String value)
Sets the receiver's text. |
|
void |
setToolTipText(java.lang.String string)
Sets the receiver's tool tip text to the argument, which may be null indicating that no tool tip text should be shown. |
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void |
setWidth(int value)
Sets the width of the receiver. |
Methods inherited from class org.eclipse.swt.widgets.Item |
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getImage, getText |
Methods inherited from class org.eclipse.swt.widgets.Widget |
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addDisposeListener, addListener, checkSubclass, checkWidget, getData, getData, getDisplay, getListeners, getStyle, isDisposed, isListening, notifyListeners, removeDisposeListener, removeListener, reskin, setData, toString |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public TreeColumn(Tree parent, int style)
Tree
) 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.
parent
- a composite control which will be the parent of the new
instance (cannot be null)style
- the style of control to construct
java.lang.IllegalArgumentException
- SWTException
- SWT.LEFT
,
SWT.RIGHT
,
SWT.CENTER
,
Widget.checkSubclass()
,
Widget.getStyle()
public TreeColumn(Tree parent, int style, int index)
Tree
), 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.
parent
- a composite control which will be the parent of the new
instance (cannot be null)style
- the style of control to constructindex
- the zero-relative index to store the receiver in its parent
java.lang.IllegalArgumentException
- SWTException
- SWT.LEFT
,
SWT.RIGHT
,
SWT.CENTER
,
Widget.checkSubclass()
,
Widget.getStyle()
Method Detail |
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public void addControlListener(ControlListener listener)
ControlListener
interface.
listener
- the listener which should be notified
java.lang.IllegalArgumentException
- SWTException
- ControlListener
,
removeControlListener(org.eclipse.swt.events.ControlListener)
public void removeControlListener(ControlListener listener)
listener
- the listener which should no longer be notified
java.lang.IllegalArgumentException
- SWTException
- ControlListener
,
addControlListener(org.eclipse.swt.events.ControlListener)
public void addSelectionListener(SelectionListener listener)
SelectionListener
interface.
widgetSelected
is called when the column header is selected.
widgetDefaultSelected
is not called.
listener
- the listener which should be notified when the control is
selected by the user
java.lang.IllegalArgumentException
- SWTException
- SelectionListener
,
removeSelectionListener(org.eclipse.swt.events.SelectionListener)
,
SelectionEvent
public void removeSelectionListener(SelectionListener listener)
listener
- the listener which should no longer be notified
java.lang.IllegalArgumentException
- SWTException
- SelectionListener
,
addSelectionListener(org.eclipse.swt.events.SelectionListener)
public void dispose()
Widget
true
when sent the message isDisposed()
.
Any internal connections between the widgets in the tree will
have been removed to facilitate garbage collection.
NOTE: This method is not called recursively on the descendents
of the receiver. This means that, widget implementers can not
detect when a widget is being disposed of by re-implementing
this method, but should instead listen for the Dispose
event.
dispose
in class Widget
Widget.addDisposeListener(org.eclipse.swt.events.DisposeListener)
,
Widget.removeDisposeListener(org.eclipse.swt.events.DisposeListener)
,
Widget.checkWidget()
public int getAlignment()
LEFT
, RIGHT
or
CENTER
.
SWTException
- public boolean getMoveable()
SWTException
- Tree.getColumnOrder()
,
Tree.setColumnOrder(int[])
,
setMoveable(boolean)
,
SWT.Move
public Tree getParent()
Tree
.
SWTException
- public boolean getResizable()
SWTException
- public java.lang.String getToolTipText()
SWTException
- public int getWidth()
SWTException
- public void pack()
SWTException
- public void setAlignment(int alignment)
LEFT
, RIGHT
or
CENTER
.
alignment
- the new alignment
SWTException
- public void setMoveable(boolean moveable)
moveable
- the moveable attribute
SWTException
- Tree.setColumnOrder(int[])
,
Tree.getColumnOrder()
,
getMoveable()
,
SWT.Move
public void setResizable(boolean value)
value
- the resize attribute
SWTException
- public void setText(java.lang.String value)
Item
setText
in class Item
value
- the new textpublic void setToolTipText(java.lang.String string)
string
- the new tool tip text (or null)
SWTException
- public void setWidth(int value)
value
- the new width
SWTException
- public <T> T getAdapter(java.lang.Class<T> adapter)
Widget
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.
getAdapter
in interface Adaptable
getAdapter
in class Widget
adapter
- the lookup class
null
if
there is no adapter associated with the given class.public void setImage(Image image)
Item
setImage
in class Item
image
- the image to display on the receiver (may be null)public void setData(java.lang.String key, java.lang.Object value)
Widget
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.
setData
in class Widget
key
- the name of the propertyvalue
- the new value for the propertyWidget.getData(String)
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