LayoutFocusTraversalPolicy JDK 1.6)

Methods

protected boolean accept (Component aComponent) [Overrides SortingFocusTraversalPolicy]

Determines whether the specified Component is an acceptable choice as the new focus owner.

Determines whether the specified Component
is an acceptable choice as the new focus owner.
This method performs the following sequence of operations:

Checks whether aComponent is visible, displayable,
enabled, and focusable. If any of these properties is
false, this method returns false.
If aComponent is an instance of JTable,
returns true.
If aComponent is an instance of JComboBox,
then returns the value of
aComponent.getUI().isFocusTraversable(aComponent).
If aComponent is a JComponent
with a JComponent.WHEN_FOCUSED
InputMap that is neither null
nor empty, returns true.
Returns the value of
DefaultFocusTraversalPolicy.accept(aComponent).

Returns: true if aComponent is a valid choice for a focus owner; otherwise false
Parameters:
- aComponent - the Component whose fitness as a focus owner is to be tested
See Also: Component.isVisible(), Component.isDisplayable(), Component.isEnabled(), Component.isFocusable(), ComboBoxUI.isFocusTraversable(javax.swing.JComboBox), JComponent.getInputMap(int), DefaultFocusTraversalPolicy.accept(java.awt.Component),

protected Comparator<Object> getComparator () [Inherited From SortingFocusTraversalPolicy]

Returns the Comparator which will be used to sort the Components in a focus traversal cycle.

public Component getComponentAfter (Container aContainer, Component aComponent) [Overrides SortingFocusTraversalPolicy] [Specified in FocusTraversalPolicy]

Returns the Component that should receive the focus after aComponent.

public Component getComponentBefore (Container aContainer, Component aComponent) [Overrides SortingFocusTraversalPolicy] [Specified in FocusTraversalPolicy]

Returns the Component that should receive the focus before aComponent.

public Component getDefaultComponent (Container aContainer) [Inherited From SortingFocusTraversalPolicy] [Specified in FocusTraversalPolicy]

Returns the default Component to focus.

Returns the default Component to focus. This Component will be the first
to receive focus when traversing down into a new focus traversal cycle
rooted at aContainer. The default implementation of this method
returns the same Component as getFirstComponent.
Returns: the default Component in the traversal cycle of aContainer, or null if no suitable Component can be found
Parameters:
- aContainer - a focus cycle root of aComponent or a focus traversal policy provider whose default Component is to be returned
Throws:
- IllegalArgumentException - if aContainer is null
See Also: SortingFocusTraversalPolicy.getFirstComponent(java.awt.Container),

public Component getFirstComponent (Container aContainer) [Overrides SortingFocusTraversalPolicy] [Specified in FocusTraversalPolicy]

Returns the first Component in the traversal cycle.

public boolean getImplicitDownCycleTraversal () [Inherited From SortingFocusTraversalPolicy]

Returns whether this SortingFocusTraversalPolicy transfers focus down- cycle implicitly.

Returns whether this SortingFocusTraversalPolicy transfers focus down-
cycle implicitly. If true, during normal focus
traversal, the Component traversed after a focus cycle root will be the
focus-cycle-root's default Component to focus. If false,
the next Component in the focus traversal cycle rooted at the specified
focus cycle root will be traversed instead.
Returns: whether this SortingFocusTraversalPolicy transfers focus down- cycle implicitly
See Also: SortingFocusTraversalPolicy.setImplicitDownCycleTraversal(boolean), SortingFocusTraversalPolicy.getFirstComponent(java.awt.Container),

public Component getInitialComponent (JInternalFrame frame) [Inherited From InternalFrameFocusTraversalPolicy]

Returns the Component that should receive the focus when a JInternalFrame is selected for the first time.

Returns the Component that should receive the focus when a
JInternalFrame is selected for the first time. Once the JInternalFrame
has been selected by a call to setSelected(true), the
initial Component will not be used again. Instead, if the JInternalFrame
loses and subsequently regains selection, or is made invisible or
undisplayable and subsequently made visible and displayable, the
JInternalFrame's most recently focused Component will become the focus
owner. The default implementation of this method returns the
JInternalFrame's default Component to focus.
Returns: the Component that should receive the focus when frame is selected for the first time, or null if no suitable Component can be found
Parameters:
- frame - the JInternalFrame whose initial Component is to be returned
Throws:
- IllegalArgumentException - if window is null
See Also: JInternalFrame.getMostRecentFocusOwner(),

public Component getInitialComponent (Window window) [Inherited From FocusTraversalPolicy]

Returns the Component that should receive the focus when a Window is made visible for the first time.

Returns the Component that should receive the focus when a Window is
made visible for the first time. Once the Window has been made visible
by a call to show() or setVisible(true), the
initial Component will not be used again. Instead, if the Window loses
and subsequently regains focus, or is made invisible or undisplayable
and subsequently made visible and displayable, the Window's most
recently focused Component will become the focus owner. The default
implementation of this method returns the default Component.
Returns: the Component that should receive the focus when window is made visible for the first time, or null if no suitable Component can be found
Parameters:
- window - the Window whose initial Component is to be returned
Throws:
- IllegalArgumentException - if window is null
See Also: FocusTraversalPolicy.getDefaultComponent(java.awt.Container), Window.getMostRecentFocusOwner(),

public Component getLastComponent (Container aContainer) [Overrides SortingFocusTraversalPolicy] [Specified in FocusTraversalPolicy]

Returns the last Component in the traversal cycle.

pack-private Container getTopmostProvider (Container focusCycleRoot, Component aComponent) [Inherited From SortingFocusTraversalPolicy]

protected void setComparator (Comparator<Object> comparator) [Inherited From SortingFocusTraversalPolicy]

Sets the Comparator which will be used to sort the Components in a focus traversal cycle.

public void setImplicitDownCycleTraversal (boolean implicitDownCycleTraversal) [Inherited From SortingFocusTraversalPolicy]

Sets whether this SortingFocusTraversalPolicy transfers focus down-cycle implicitly.

Sets whether this SortingFocusTraversalPolicy transfers focus down-cycle
implicitly. If true, during normal focus traversal,
the Component traversed after a focus cycle root will be the focus-
cycle-root's default Component to focus. If false, the
next Component in the focus traversal cycle rooted at the specified
focus cycle root will be traversed instead. The default value for this
property is true.
Parameters:
- implicitDownCycleTraversal - whether this SortingFocusTraversalPolicy transfers focus down-cycle implicitly
See Also: SortingFocusTraversalPolicy.getImplicitDownCycleTraversal(), SortingFocusTraversalPolicy.getFirstComponent(java.awt.Container),