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Préférences
Moteurs de recherche
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JavaTM 2 Platform Std. Ed. v1.6.0
java.awt
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Constructor Summary | |
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FocusTraversalPolicy()
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Method Summary | |
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abstract Component |
getComponentAfter(Container aContainer,
Component aComponent)
Returns the Component that should receive the focus after aComponent. |
abstract Component |
getComponentBefore(Container aContainer,
Component aComponent)
Returns the Component that should receive the focus before aComponent. |
abstract Component |
getDefaultComponent(Container aContainer)
Returns the default Component to focus. |
abstract Component |
getFirstComponent(Container aContainer)
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 aContainer)
Returns the last Component in the traversal cycle. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public FocusTraversalPolicy()
Method Detail |
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public abstract Component getComponentAfter(Container aContainer, Component aComponent)
aContainer
- a focus cycle root of aComponent or focus traversal
policy provideraComponent
- a (possibly indirect) child of aContainer, or
aContainer itself
IllegalArgumentException
- if aContainer is not a focus cycle
root of aComponent or a focus traversal policy provider, or if
either aContainer or aComponent is nullpublic abstract Component getComponentBefore(Container aContainer, Component aComponent)
aContainer
- a focus cycle root of aComponent or focus traversal
policy provideraComponent
- a (possibly indirect) child of aContainer, or
aContainer itself
IllegalArgumentException
- if aContainer is not a focus cycle
root of aComponent or a focus traversal policy provider, or if
either aContainer or aComponent is nullpublic abstract Component getFirstComponent(Container aContainer)
aContainer
- the focus cycle root or focus traversal policy provider
whose first Component is to be returned
IllegalArgumentException
- if aContainer is nullpublic abstract Component getLastComponent(Container aContainer)
aContainer
- the focus cycle root or focus traversal policy
provider whose last Component is to be returned
IllegalArgumentException
- if aContainer is nullpublic abstract Component getDefaultComponent(Container aContainer)
aContainer
- the focus cycle root or focus traversal policy
provider whose default Component is to be returned
IllegalArgumentException
- if aContainer 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()