Class JRootPane.RootLayout
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.
- Since:
- 1.2
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionvoidaddLayoutComponent(Component comp, Object constraints) Adds the specified component to the layout, using the specified constraint object.voidaddLayoutComponent(String name, Component comp) If the layout manager uses a per-component string, adds the componentcompto the layout, associating it with the string specified byname.floatgetLayoutAlignmentX(Container target) Returns the alignment along the x axis.floatgetLayoutAlignmentY(Container target) Returns the alignment along the y axis.voidinvalidateLayout(Container target) Invalidates the layout, indicating that if the layout manager has cached information it should be discarded.voidlayoutContainer(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.voidRemoves 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:
preferredLayoutSizein 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:
minimumLayoutSizein 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:
maximumLayoutSizein 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:
layoutContainerin interfaceLayoutManager- Parameters:
parent- the Container for which this layout manager is being used
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addLayoutComponent
Description copied from interface:LayoutManagerIf the layout manager uses a per-component string, adds the componentcompto the layout, associating it with the string specified byname.- Specified by:
addLayoutComponentin 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:LayoutManagerRemoves the specified component from the layout.- Specified by:
removeLayoutComponentin interfaceLayoutManager- Parameters:
comp- the component to be removed
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addLayoutComponent
Description copied from interface:LayoutManager2Adds the specified component to the layout, using the specified constraint object.- Specified by:
addLayoutComponentin 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:LayoutManager2Returns 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:
getLayoutAlignmentXin interfaceLayoutManager2- Parameters:
target- the target container- Returns:
- the x-axis alignment preference
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getLayoutAlignmentY
Description copied from interface:LayoutManager2Returns 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:
getLayoutAlignmentYin interfaceLayoutManager2- Parameters:
target- the target container- Returns:
- the y-axis alignment preference
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invalidateLayout
Description copied from interface:LayoutManager2Invalidates the layout, indicating that if the layout manager has cached information it should be discarded.- Specified by:
invalidateLayoutin interfaceLayoutManager2- Parameters:
target- the target container
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