ILayoutExtension (Eclipse Platform API Specification)

All Known Implementing Classes:

ColumnLayout, TableWrapLayout
```
public interface ILayoutExtension
```
Classes that extend abstract class Layout and implement this interface can take part in layout computation of the TableWrapLayout manager. This layout uses alternative algorithm that computes columns before rows. It allows it to 'flow' wrapped text proportionally (similar to the way web browser renders tables). Custom layout managers that implement this interface will allow TableWrapLayout to properly compute width hint to pass.

Since:

3.0

See Also:

TableWrapLayout, ColumnLayout

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`int`	`computeMaximumWidth(Composite parent, boolean changed)`	Computes the maximum width of the parent.
`int`	`computeMinimumWidth(Composite parent, boolean changed)`	Computes the minimum width of the parent.

- Method Detail
  - computeMinimumWidth
```
int computeMinimumWidth(Composite parent,
                        boolean changed)
```
    Computes the minimum width of the parent. All widgets capable of word wrapping should return the width of the longest word that cannot be broken any further.
    
    Parameters:
    
    parent - the parent composite
    
    changed - true if the cached information should be flushed, false otherwise.
    
    Returns:
    
    the minimum width of the parent composite
  - computeMaximumWidth
```
int computeMaximumWidth(Composite parent,
                        boolean changed)
```
    Computes the maximum width of the parent. All widgets capable of word wrapping should return the length of the entire text with wrapping turned off.
    
    Parameters:
    
    parent - the parent composite
    
    changed - true if the cached information should be flushed, false otherwise.
    
    Returns:
    
    the maximum width of the parent composite