JRootPane.RootLayout
Class JRootPane.RootLayout
- java.lang.Object
-
- javax.swing.JRootPane.RootLayout
- 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 JavaBeans™ has been added to the java.beans
package. Please see XMLEncoder
.
Constructors
RootLayout
protected RootLayout()
Methods
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)
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)
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
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
addLayoutComponent
public void addLayoutComponent(String name, Component comp)
Description copied from interface: LayoutManager
If the layout manager uses a per-component string, adds the component comp
to the layout, associating it with the string specified by name
.
- Specified by:
-
addLayoutComponent
in interfaceLayoutManager
- Parameters:
-
name
- the string to be associated with the component -
comp
- the component to be added
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
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 added -
constraints
- where/how the component is added to the layout.
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
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
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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