com.jgoodies.forms.extras

Class FormLayoutUtils


public final class FormLayoutUtils
extends Object

Constists only of static methods that provide convenience behavior for working with the FormLayout.

Note: This class is not part of the binary Form library. It comes with the Forms distributions as an extra. The API is work in progress and may change without notice; this class may even be completely removed from future distributions. If you want to use this class, you may consider copying it into your codebase.

Version:
$Revision: 1.2 $
Author:
Karsten Lentzsch

Nested Class Summary

static class
FormLayoutUtils.ConstraintIterator
Iterates over a FormLayout container's CellConstraints.

Method Summary

static boolean
columnContainsComponent(Container container, int columnIndex)
Checks and answers whether the given FormLayout container contains a component in the specified column.
static boolean
isGroupedColumn(FormLayout layout, int columnIndex)
Checks and answers whether the specified column is grouped in the given FormLayout.
static boolean
isGroupedRow(FormLayout layout, int rowIndex)
Checks and answers whether the specified row is grouped in the given FormLayout.
static boolean
rowContainsComponent(Container container, int rowIndex)
Checks and answers whether the given FormLayout container contains a component in the specified row.

Method Details

columnContainsComponent

public static boolean columnContainsComponent(Container container,
                                              int columnIndex)
Checks and answers whether the given FormLayout container contains a component in the specified column.

For every container child component, we look up the associated CellConstraints object from the layout and compare its horizontal grid origin with the specified column index.

Parameters:
container - the layout container
columnIndex - the index of the column to test
Returns:
true if the column contains a component, false otherwise

isGroupedColumn

public static boolean isGroupedColumn(FormLayout layout,
                                      int columnIndex)
Checks and answers whether the specified column is grouped in the given FormLayout. A column col is grouped, if and only if there's a column group group that includes col's index.
Parameters:
layout - the layout to be inspected
columnIndex - the index of the column to be checked
Returns:
true if the column is grouped, false if not

isGroupedRow

public static boolean isGroupedRow(FormLayout layout,
                                   int rowIndex)
Checks and answers whether the specified row is grouped in the given FormLayout. A row row is grouped, if and only if there's a row group group that includes row's index.
Parameters:
layout - the layout to be inspected
rowIndex - the index of the row to be checked
Returns:
true if the column is grouped, false if not

rowContainsComponent

public static boolean rowContainsComponent(Container container,
                                           int rowIndex)
Checks and answers whether the given FormLayout container contains a component in the specified row.

For every container child component, we look up the associated CellConstraints object from the layout and compare its vertical grid origin with the specified row index.

Parameters:
container - the layout container
rowIndex - the index of the row to test
Returns:
true if the row contains a component, false otherwise

Copyright © 2002-2004 JGoodies Karsten Lentzsch. All Rights Reserved.