com.jgoodies.forms.layout

## Class RowSpec

- java.lang.Object
- - com.jgoodies.forms.layout.FormSpec
  - - com.jgoodies.forms.layout.RowSpec

- All Implemented Interfaces:
    Serializable

      public final class RowSpec
      extends FormSpec

  Specifies rows in FormLayout by their default orientation, start size and resizing behavior.

  Examples:
  The following examples specify a centered row with a size of 14 dlu that won't grow.

       new RowSpec(Sizes.dluX(14));
       new RowSpec(RowSpec.CENTER, Sizes.dluX(14), 0.0);
       new RowSpec(rowSpec.CENTER, Sizes.dluX(14), RowSpec.NO_GROW);
       RowSpec.parse("14dlu");
       RowSpec.parse("14dlu:0");
       RowSpec.parse("center:14dlu:0");

  The `FormSpecs` provides predefined frequently used RowSpec instances.

  Version:
    $Revision: 1.20 $
  Author:
    Karsten Lentzsch
  See Also:
    `FormSpecs`, Serialized Form

- - ### Nested Class Summary

    - ### Nested classes/interfaces inherited from class com.jgoodies.forms.layout.FormSpec

      `FormSpec.DefaultAlignment`

  - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static FormSpec.DefaultAlignment` | `BOTTOM` By default put the components in the bottom.
    `static FormSpec.DefaultAlignment` | `CENTER` By default put the components in the center.
    `static FormSpec.DefaultAlignment` | `DEFAULT` Unless overridden the default alignment for a row is CENTER.
    `static FormSpec.DefaultAlignment` | `FILL` By default fill the component into the row.
    `static FormSpec.DefaultAlignment` | `TOP` By default put the components in the top.

    - ### Fields inherited from class com.jgoodies.forms.layout.FormSpec

      `DEFAULT_GROW, NO_GROW`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `RowSpec(FormSpec.DefaultAlignment defaultAlignment, Size size, double resizeWeight)` Constructs a RowSpec from the given default orientation, size, and resize weight.
    `RowSpec(Size size)` Constructs a RowSpec for the given size using the default alignment, and no resizing.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `static RowSpec` | `createGap(ConstantSize gapHeight)` Creates and returns a `RowSpec` that represents a gap with the specified `ConstantSize`.
    `static RowSpec` | `decode(String encodedRowSpec)` Parses the encoded row specification and returns a RowSpec object that represents the string.
    `static RowSpec` | `decode(String encodedRowSpec, LayoutMap layoutMap)` Parses the encoded row specifications and returns a RowSpec object that represents the string.
    `static RowSpec[]` | `decodeSpecs(String encodedRowSpecs)` Parses and splits encoded row specifications using the default `LayoutMap` and returns an array of RowSpec objects.
    `static RowSpec[]` | `decodeSpecs(String encodedRowSpecs, LayoutMap layoutMap)` Parses and splits encoded row specifications using the given `LayoutMap` and returns an array of RowSpec objects.
    `protected boolean` | `isHorizontal()` Returns if this is a horizontal specification (vs. vertical).

    - ### Methods inherited from class com.jgoodies.forms.layout.FormSpec

      `encode, getDefaultAlignment, getDefaultAlignmentExplictlySet, getResizeWeight, getSize, toShortString, toString`

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

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

- - ### Field Detail

    - #### TOP

          public static final FormSpec.DefaultAlignment TOP

      By default put the components in the top.

    - #### CENTER

          public static final FormSpec.DefaultAlignment CENTER

      By default put the components in the center.

    - #### BOTTOM

          public static final FormSpec.DefaultAlignment BOTTOM

      By default put the components in the bottom.

    - #### FILL

          public static final FormSpec.DefaultAlignment FILL

      By default fill the component into the row.

    - #### DEFAULT

          public static final FormSpec.DefaultAlignment DEFAULT

      Unless overridden the default alignment for a row is CENTER.

  - ### Constructor Detail

    - #### RowSpec

          public RowSpec(FormSpec.DefaultAlignment defaultAlignment,
                 Size size,
                 double resizeWeight)

      Constructs a RowSpec from the given default orientation, size, and resize weight.

      The resize weight must be a non-negative double; you can use `NO_FILL` as a convenience value for no resize.

      Parameters:
        `defaultAlignment` - the row's default alignment
        `size` - constant size, component size, or bounded size
        `resizeWeight` - the row's non-negative resize weight
      Throws:
        `IllegalArgumentException` - if the size is invalid or the resize weight is negative

    - #### RowSpec

          public RowSpec(Size size)

      Constructs a RowSpec for the given size using the default alignment, and no resizing.
      Parameters:
        `size` - constant size, component size, or bounded size
      Throws:
        `IllegalArgumentException` - if the size is invalid

  - ### Method Detail

    - #### createGap

          public static RowSpec createGap(ConstantSize gapHeight)

      Creates and returns a `RowSpec` that represents a gap with the specified `ConstantSize`.
      Parameters:
        `gapHeight` - specifies the gap height
      Returns:
        a RowSpec that describes a vertical gap with the given height
      Throws:
        `NullPointerException` - if `gapHeight` is `null`
      Since:
        1.2

    - #### decode

          public static RowSpec decode(String encodedRowSpec)

      Parses the encoded row specification and returns a RowSpec object that represents the string. Variables are expanded using the default LayoutMap.
      Parameters:
        `encodedRowSpec` - the encoded row specification
      Returns:
        a RowSpec instance for the given specification
      Throws:
        `NullPointerException` - if `encodedRowSpec` is `null`
      Since:
        1.2
      See Also:
        `decode(String, LayoutMap)`, `LayoutMap.getRoot()`

    - #### decode

          public static RowSpec decode(String encodedRowSpec,
                       LayoutMap layoutMap)

      Parses the encoded row specifications and returns a RowSpec object that represents the string. Variables are expanded using the given LayoutMap.
      Parameters:
        `encodedRowSpec` - the encoded column specification
        `layoutMap` - expands layout row variables
      Returns:
        a RowSpec instance for the given specification
      Throws:
        `NullPointerException` - if `encodedRowSpec` or `layoutMap` is `null`
      Since:
        1.2
      See Also:
        `decodeSpecs(String, LayoutMap)`

    - #### decodeSpecs

          public static RowSpec[] decodeSpecs(String encodedRowSpecs)

      Parses and splits encoded row specifications using the default `LayoutMap` and returns an array of RowSpec objects.
      Parameters:
        `encodedRowSpecs` - comma separated encoded row specifications
      Returns:
        an array of decoded row specifications
      Throws:
        `NullPointerException` - if `encodedRowSpecs` is `null`
      See Also:
        `decodeSpecs(String, LayoutMap)`, `decode(String)`, `LayoutMap.getRoot()`

    - #### decodeSpecs

          public static RowSpec[] decodeSpecs(String encodedRowSpecs,
                              LayoutMap layoutMap)

      Parses and splits encoded row specifications using the given `LayoutMap` and returns an array of RowSpec objects.
      Parameters:
        `encodedRowSpecs` - comma separated encoded row specifications
        `layoutMap` - expands layout row variables
      Returns:
        an array of decoded row specifications
      Throws:
        `NullPointerException` - `encodedRowSpecs` or `layoutMap` is `null`
      Since:
        1.2
      See Also:
        `RowSpec(String)`

    - #### isHorizontal

          protected boolean isHorizontal()

      Returns if this is a horizontal specification (vs. vertical). Used to distinct between horizontal and vertical dialog units, which have different conversion factors.
      Returns:
        always `false` (for vertical)

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