LayoutManager2 (Java Platform SE 6)

This documentation differs from the official API. Jadeite adds extra features to the API including: variable font sizes, constructions examples, placeholders for classes and methods, and auto-generated “See Also” links. Additionally it is missing some items found in standard Javadoc documentation, including: generics type information, “Deprecated” tags and comments, “See Also” links, along with other minor differences. Please send any questions or feedback to bam@cs.cmu.edu.

Overview

Package

Class

PREV CLASS NEXT CLASS

FRAMES NO FRAMES

SUMMARY: NESTED | FIELD | CONSTR | METHOD

DETAIL: FIELD | CONSTR | METHOD

java.awt
interface LayoutManager2

All Superinterfaces:: LayoutManager

All Known Implementing Classes:: BasicSplitPaneUI.BasicHorizontalLayoutManager, BasicSplitPaneUI.BasicVerticalLayoutManager, BorderLayout, BoxLayout, DefaultMenuLayout, CardLayout, GridBagLayout, GroupLayout, JRootPane.RootLayout, OverlayLayout, SpringLayout

public interface LayoutManager2
extends LayoutManager

Defines an interface for classes that know how to layout Containers 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 the creation of constraint-based layouts. It does not yet provide full, general support for custom constraint-based layout managers.

Method Summary
`void`	`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.
`Dimension`	`maximumLayoutSize(Container target)` Calculates the maximum size dimensions for the specified container, given the components it contains.

Methods inherited from class java.awt.LayoutManager
`addLayoutComponent, layoutContainer, minimumLayoutSize, preferredLayoutSize, removeLayoutComponent`

Method Detail

addLayoutComponent

public void addLayoutComponent(Component comp,
                               Object constraints)

Adds the specified component to the layout, using the specified constraint object.

Parameters:: comp - the component to be added; constraints - where/how the component is added to the layout.

getLayoutAlignmentX

public float getLayoutAlignmentX(Container target)

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

getLayoutAlignmentY

public float getLayoutAlignmentY(Container target)

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

invalidateLayout

public void invalidateLayout(Container target)

Invalidates the layout, indicating that if the layout manager has cached information it should be discarded.

Parameters:: target

maximumLayoutSize

public Dimension maximumLayoutSize(Container target)

Calculates the maximum size dimensions for the specified container, given the components it contains.

Parameters:: target