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Préférences
Moteurs de recherche
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JavaTM 2 Platform Std. Ed. v1.4.2
java.awt
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Constructor Summary | |
FocusTraversalPolicy()
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Method Summary | |
abstract Component |
getComponentAfter(Container focusCycleRoot,
Component aComponent)
Returns the Component that should receive the focus after aComponent. |
abstract Component |
getComponentBefore(Container focusCycleRoot,
Component aComponent)
Returns the Component that should receive the focus before aComponent. |
abstract Component |
getDefaultComponent(Container focusCycleRoot)
Returns the default Component to focus. |
abstract Component |
getFirstComponent(Container focusCycleRoot)
Returns the first Component in the traversal cycle. |
Component |
getInitialComponent(Window window)
Returns the Component that should receive the focus when a Window is made visible for the first time. |
abstract Component |
getLastComponent(Container focusCycleRoot)
Returns the last Component in the traversal cycle. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public FocusTraversalPolicy()
Method Detail |
public abstract Component getComponentAfter(Container focusCycleRoot, Component aComponent)
focusCycleRoot
- a focus cycle root of aComponentaComponent
- a (possibly indirect) child of focusCycleRoot, or
focusCycleRoot itself
IllegalArgumentException
- if focusCycleRoot is not a focus cycle
root of aComponent, or if either focusCycleRoot or aComponent is
nullpublic abstract Component getComponentBefore(Container focusCycleRoot, Component aComponent)
focusCycleRoot
- a focus cycle root of aComponentaComponent
- a (possibly indirect) child of focusCycleRoot, or
focusCycleRoot itself
IllegalArgumentException
- if focusCycleRoot is not a focus cycle
root of aComponent, or if either focusCycleRoot or aComponent is
nullpublic abstract Component getFirstComponent(Container focusCycleRoot)
focusCycleRoot
- the focus cycle root whose first Component is to
be returned
IllegalArgumentException
- if focusCycleRoot is nullpublic abstract Component getLastComponent(Container focusCycleRoot)
focusCycleRoot
- the focus cycle root whose last Component is to be
returned
IllegalArgumentException
- if focusCycleRoot is nullpublic abstract Component getDefaultComponent(Container focusCycleRoot)
focusCycleRoot
- the focus cycle root whose default Component is to
be returned
IllegalArgumentException
- if focusCycleRoot is nullpublic Component getInitialComponent(Window window)
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.
window
- the Window whose initial Component is to be returned
IllegalArgumentException
- if window is nullgetDefaultComponent(java.awt.Container)
,
Window.getMostRecentFocusOwner()