java.lang.Object
javax.swing.JRootPane.RootLayout
- All Implemented Interfaces:
LayoutManager
,LayoutManager2
,Serializable
- Enclosing class:
JRootPane
A custom layout manager that is responsible for the layout of
layeredPane, glassPane, and menuBar.
Warning:
Serialized objects of this class will not be compatible with
future Swing releases. The current serialization support is
appropriate for short term storage or RMI between applications running
the same version of Swing. As of 1.4, support for long term storage
of all JavaBeans
has been added to the java.beans
package.
Please see XMLEncoder
.
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionvoid
addLayoutComponent
(Component comp, Object constraints) Adds the specified component to the layout, using the specified constraint object.void
addLayoutComponent
(String name, Component comp) If the layout manager uses a per-component string, adds the componentcomp
to the layout, associating it with the string specified byname
.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.void
layoutContainer
(Container parent) Instructs the layout manager to perform the layout for the specified container.maximumLayoutSize
(Container target) Returns the maximum amount of space the layout can use.minimumLayoutSize
(Container parent) Returns the minimum amount of space the layout needs.preferredLayoutSize
(Container parent) Returns the amount of space the layout would like to have.void
Removes the specified component from the layout.
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Constructor Details
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RootLayout
protected RootLayout()Constructs aRootLayout
.
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Method Details
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preferredLayoutSize
Returns the amount of space the layout would like to have.- Specified by:
preferredLayoutSize
in interfaceLayoutManager
- Parameters:
parent
- the Container for which this layout manager is being used- Returns:
- a Dimension object containing the layout's preferred size
- See Also:
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minimumLayoutSize
Returns the minimum amount of space the layout needs.- Specified by:
minimumLayoutSize
in interfaceLayoutManager
- Parameters:
parent
- the Container for which this layout manager is being used- Returns:
- a Dimension object containing the layout's minimum size
- See Also:
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maximumLayoutSize
Returns the maximum amount of space the layout can use.- Specified by:
maximumLayoutSize
in interfaceLayoutManager2
- Parameters:
target
- the Container for which this layout manager is being used- Returns:
- a Dimension object containing the layout's maximum size
- See Also:
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layoutContainer
Instructs the layout manager to perform the layout for the specified container.- Specified by:
layoutContainer
in interfaceLayoutManager
- Parameters:
parent
- the Container for which this layout manager is being used
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addLayoutComponent
Description copied from interface:LayoutManager
If the layout manager uses a per-component string, adds the componentcomp
to the layout, associating it with the string specified byname
.- Specified by:
addLayoutComponent
in interfaceLayoutManager
- Parameters:
name
- the string to be associated with the componentcomp
- the component to be added
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removeLayoutComponent
Description copied from interface:LayoutManager
Removes the specified component from the layout.- Specified by:
removeLayoutComponent
in interfaceLayoutManager
- Parameters:
comp
- the component to be removed
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addLayoutComponent
Description copied from interface:LayoutManager2
Adds the specified component to the layout, using the specified constraint object.- Specified by:
addLayoutComponent
in interfaceLayoutManager2
- Parameters:
comp
- the component to be addedconstraints
- where/how the component is added to the layout.
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getLayoutAlignmentX
Description copied from interface:LayoutManager2
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.- Specified by:
getLayoutAlignmentX
in interfaceLayoutManager2
- Parameters:
target
- the target container- Returns:
- the x-axis alignment preference
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getLayoutAlignmentY
Description copied from interface:LayoutManager2
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.- Specified by:
getLayoutAlignmentY
in interfaceLayoutManager2
- Parameters:
target
- the target container- Returns:
- the y-axis alignment preference
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invalidateLayout
Description copied from interface:LayoutManager2
Invalidates the layout, indicating that if the layout manager has cached information it should be discarded.- Specified by:
invalidateLayout
in interfaceLayoutManager2
- Parameters:
target
- the target container
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