- All Superinterfaces:
LayoutManager
- All Known Implementing Classes:
BasicSplitPaneUI.BasicHorizontalLayoutManager
,BasicSplitPaneUI.BasicVerticalLayoutManager
,BorderLayout
,BoxLayout
,CardLayout
,DefaultMenuLayout
,GridBagLayout
,GroupLayout
,JRootPane.RootLayout
,OverlayLayout
,SpringLayout
Defines an interface for classes that know how to layout
Container
s
based on a layout constraints object.
This interface extends the LayoutManager
interface to deal with layouts
explicitly in terms of constraint objects that specify how and where
components should be added to the layout.
This minimal extension to LayoutManager
is intended for tool
providers who wish to create constraint-based layouts.
It does not yet provide full, general support for custom
constraint-based layout managers.
- See Also:
-
Method Summary
Modifier and TypeMethodDescriptionvoid
addLayoutComponent
(Component comp, Object constraints) Adds the specified component to the layout, using the specified constraint object.float
getLayoutAlignmentX
(Container target) Returns the alignment along the x axis.float
getLayoutAlignmentY
(Container target) Returns the alignment along the y axis.void
invalidateLayout
(Container target) Invalidates the layout, indicating that if the layout manager has cached information it should be discarded.maximumLayoutSize
(Container target) Calculates the maximum size dimensions for the specified container, given the components it contains.Methods declared in interface java.awt.LayoutManager
addLayoutComponent, layoutContainer, minimumLayoutSize, preferredLayoutSize, removeLayoutComponent
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Method Details
-
addLayoutComponent
Adds the specified component to the layout, using the specified constraint object.- Parameters:
comp
- the component to be addedconstraints
- where/how the component is added to the layout.
-
maximumLayoutSize
Calculates the maximum size dimensions for the specified container, given the components it contains.- Parameters:
target
- the target container- Returns:
- the maximum size of the container
- See Also:
-
getLayoutAlignmentX
Returns the alignment along the x axis. This specifies how the component would like to be aligned relative to other components. The value should be a number between 0 and 1 where 0 represents alignment along the origin, 1 is aligned the furthest away from the origin, 0.5 is centered, etc.- Parameters:
target
- the target container- Returns:
- the x-axis alignment preference
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getLayoutAlignmentY
Returns the alignment along the y axis. This specifies how the component would like to be aligned relative to other components. The value should be a number between 0 and 1 where 0 represents alignment along the origin, 1 is aligned the furthest away from the origin, 0.5 is centered, etc.- Parameters:
target
- the target container- Returns:
- the y-axis alignment preference
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invalidateLayout
Invalidates the layout, indicating that if the layout manager has cached information it should be discarded.- Parameters:
target
- the target container
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