Module java.desktop
Package java.awt

# Interface LayoutManager

All Known Subinterfaces:
  `LayoutManager2`

All Known Implementing Classes:
  `BasicComboBoxUI.ComboBoxLayoutManager`, `BasicInternalFrameTitlePane.TitlePaneLayout`, `BasicInternalFrameUI.InternalFrameLayout`, `BasicOptionPaneUI.ButtonAreaLayout`, `BasicScrollBarUI`, `BasicSplitPaneDivider.DividerLayout`, `BasicSplitPaneUI.BasicHorizontalLayoutManager`, `BasicSplitPaneUI.BasicVerticalLayoutManager`, `BasicTabbedPaneUI.TabbedPaneLayout`, `BorderLayout`, `BoxLayout`, `CardLayout`, `DefaultMenuLayout`, `FlowLayout`, `GridBagLayout`, `GridLayout`, `GroupLayout`, `JRootPane.RootLayout`, `JSpinner.DateEditor`, `JSpinner.DefaultEditor`, `JSpinner.ListEditor`, `JSpinner.NumberEditor`, `MetalComboBoxUI.MetalComboBoxLayoutManager`, `MetalScrollBarUI`, `MetalTabbedPaneUI.TabbedPaneLayout`, `OverlayLayout`, `ScrollPaneLayout`, `ScrollPaneLayout.UIResource`, `SpringLayout`, `SynthScrollBarUI`, `ViewportLayout`

public interface LayoutManager
Defines the interface for classes that know how to lay out `Container`s.

Swing's painting architecture assumes the children of a `JComponent` do not overlap. If a `JComponent`'s `LayoutManager` allows children to overlap, the `JComponent` must override `isOptimizedDrawingEnabled` to return false.

See Also:
  - `Container`
  - `JComponent.isOptimizedDrawingEnabled()`

## Method Summary

Modifier and Type
Method
Description
`void`
`addLayoutComponent(String name, Component comp)`
If the layout manager uses a per-component string, adds the component `comp` to the layout, associating it with the string specified by `name`.
`void`
`layoutContainer(Container parent)`
Lays out the specified container.
`Dimension`
`minimumLayoutSize(Container parent)`
Calculates the minimum size dimensions for the specified container, given the components it contains.
`Dimension`
`preferredLayoutSize(Container parent)`
Calculates the preferred size dimensions for the specified container, given the components it contains.
`void`
`removeLayoutComponent(Component comp)`
Removes the specified component from the layout.

## Method Details

### addLayoutComponent

void addLayoutComponent(String name, Component comp)
If the layout manager uses a per-component string, adds the component `comp` to the layout, associating it with the string specified by `name`.

Parameters:
  `name` - the string to be associated with the component
  `comp` - the component to be added

### removeLayoutComponent

void removeLayoutComponent(Component comp)
Removes the specified component from the layout.

Parameters:
  `comp` - the component to be removed

### preferredLayoutSize

Dimension preferredLayoutSize(Container parent)
Calculates the preferred size dimensions for the specified container, given the components it contains.

Parameters:
  `parent` - the container to be laid out
Returns:
  the preferred dimension for the container
See Also:
  - `minimumLayoutSize(java.awt.Container)`

### minimumLayoutSize

Dimension minimumLayoutSize(Container parent)
Calculates the minimum size dimensions for the specified container, given the components it contains.

Parameters:
  `parent` - the component to be laid out
Returns:
  the minimum dimension for the container
See Also:
  - `preferredLayoutSize(java.awt.Container)`

### layoutContainer

void layoutContainer(Container parent)
Lays out the specified container.

Parameters:
  `parent` - the container to be laid out