- java.lang.Object
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- javax.swing.JRootPane.RootLayout
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- All Implemented Interfaces:
- LayoutManager, LayoutManager2, Serializable
- Enclosing class:
- JRootPane
protected class JRootPane.RootLayout extends Object implements LayoutManager2, Serializable
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 JavaBeansTM has been added to the
java.beans
package. Please seeXMLEncoder
.
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Constructor Summary
Constructors Modifier Constructor and Description protected
JRootPane.RootLayout()
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Method Summary
Methods Modifier and Type Method and Description void
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.Dimension
maximumLayoutSize(Container target)
Returns the maximum amount of space the layout can use.Dimension
minimumLayoutSize(Container parent)
Returns the minimum amount of space the layout needs.Dimension
preferredLayoutSize(Container parent)
Returns the amount of space the layout would like to have.void
removeLayoutComponent(Component comp)
Removes the specified component from the layout.
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Method Detail
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preferredLayoutSize
public Dimension preferredLayoutSize(Container parent)
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:
LayoutManager.minimumLayoutSize(java.awt.Container)
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minimumLayoutSize
public Dimension minimumLayoutSize(Container parent)
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:
LayoutManager.preferredLayoutSize(java.awt.Container)
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maximumLayoutSize
public Dimension maximumLayoutSize(Container target)
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:
Component.getMaximumSize()
,LayoutManager
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layoutContainer
public void layoutContainer(Container parent)
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
public void addLayoutComponent(String name, Component comp)
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
public void removeLayoutComponent(Component comp)
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
public void addLayoutComponent(Component comp, Object constraints)
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
public float getLayoutAlignmentX(Container target)
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
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getLayoutAlignmentY
public float getLayoutAlignmentY(Container target)
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
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invalidateLayout
public void invalidateLayout(Container target)
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
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