com.jgoodies.forms.extras

## Class FormLayoutUtils

- java.lang.Object
- - com.jgoodies.forms.extras.FormLayoutUtils

-     public final class FormLayoutUtils
      extends Object

  Consists 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: 1.12 $
  Author:
    Karsten Lentzsch

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Class and Description
    --- | ---
    `static class` | `FormLayoutUtils.ConstraintIterator` Iterates over a FormLayout container's `CellConstraints`.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `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.

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Method Detail

    - #### 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
      Throws:
        `IllegalArgumentException` - if the container's layout is not a `FormLayout`

    - #### 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
      Throws:
        `IllegalArgumentException` - if the container's layout is not a `FormLayout`

    - #### 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

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