Module javafx.graphics
Package javafx.scene.layout

## Class RowConstraints

- java.lang.Object
- - javafx.scene.layout.ConstraintsBase
  - - javafx.scene.layout.RowConstraints

-     public class RowConstraints
      extends ConstraintsBase

  Defines optional layout constraints for a row in a `GridPane`. If a RowConstraints object is added for a row in a gridpane, the gridpane will use those constraint values when computing the row's height and layout.

  For example, to create a GridPane with 10 rows 50 pixels tall:

           GridPane gridpane = new GridPane();
           for (int i = 0; i < 10; i++) {
               RowConstraints row = new RowConstraints(50);
               gridpane.getRowConstraints().add(row);
           }

  Or, to create a GridPane where rows take 25%, 50%, 25% of its height:

           GridPane gridpane = new GridPane();
           RowConstraints row1 = new RowConstraints();
           row1.setPercentHeight(25);
           RowConstraints row2 = new RowConstraints();
           row2.setPercentHeight(50);
           RowConstraints row3 = new RowConstraints();
           row3.setPercentHeight(25);
           gridpane.getRowConstraints().addAll(row1,row2,row3);

  Note that adding an empty RowConstraints object has the effect of not setting any constraints, leaving the GridPane to compute the row's layout based solely on its content's size preferences and constraints.
  Since:
    JavaFX 2.0

- - ### Property Summary

    Properties
    Type | Property | Description
    --- | --- | ---
    `BooleanProperty` | `fillHeight` | The vertical fill policy for the row.
    `DoubleProperty` | `maxHeight` | The maximum height for the row.
    `DoubleProperty` | `minHeight` | The minimum height for the row.
    `DoubleProperty` | `percentHeight` | The height percentage of the row.
    `DoubleProperty` | `prefHeight` | The preferred height for the row.
    `ObjectProperty<VPos>` | `valignment` | The vertical alignment for the row.
    `ObjectProperty<Priority>` | `vgrow` | The vertical grow priority for the row.

  - ### Field Summary

    - ### Fields inherited from class javafx.scene.layout.ConstraintsBase

      `CONSTRAIN_TO_PREF`

  - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `RowConstraints()` | Creates a row constraints object with no properties set.
    `RowConstraints​(double height)` | Creates a row constraint object with a fixed height.
    `RowConstraints​(double minHeight, double prefHeight, double maxHeight)` | Creates a row constraint object with a fixed size range.
    `RowConstraints​(double minHeight, double prefHeight, double maxHeight, Priority vgrow, VPos valignment, boolean fillHeight)` | Creates a row constraint object with a fixed size range, vertical grow priority, vertical alignment, and vertical fill behavior.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `BooleanProperty` | `fillHeightProperty()` | The vertical fill policy for the row.
    `double` | `getMaxHeight()` | Gets the value of the property maxHeight.
    `double` | `getMinHeight()` | Gets the value of the property minHeight.
    `double` | `getPercentHeight()` | Gets the value of the property percentHeight.
    `double` | `getPrefHeight()` | Gets the value of the property prefHeight.
    `VPos` | `getValignment()` | Gets the value of the property valignment.
    `Priority` | `getVgrow()` | Gets the value of the property vgrow.
    `boolean` | `isFillHeight()` | Gets the value of the property fillHeight.
    `DoubleProperty` | `maxHeightProperty()` | The maximum height for the row.
    `DoubleProperty` | `minHeightProperty()` | The minimum height for the row.
    `DoubleProperty` | `percentHeightProperty()` | The height percentage of the row.
    `DoubleProperty` | `prefHeightProperty()` | The preferred height for the row.
    `void` | `setFillHeight​(boolean value)` | Sets the value of the property fillHeight.
    `void` | `setMaxHeight​(double value)` | Sets the value of the property maxHeight.
    `void` | `setMinHeight​(double value)` | Sets the value of the property minHeight.
    `void` | `setPercentHeight​(double value)` | Sets the value of the property percentHeight.
    `void` | `setPrefHeight​(double value)` | Sets the value of the property prefHeight.
    `void` | `setValignment​(VPos value)` | Sets the value of the property valignment.
    `void` | `setVgrow​(Priority value)` | Sets the value of the property vgrow.
    `String` | `toString()` | Returns a string representation of this `RowConstraints` object.
    `ObjectProperty<VPos>` | `valignmentProperty()` | The vertical alignment for the row.
    `ObjectProperty<Priority>` | `vgrowProperty()` | The vertical grow priority for the row.

    - ### Methods inherited from class javafx.scene.layout.ConstraintsBase

      `requestLayout`

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

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

- - ### Property Detail

    - #### minHeight

          public final DoubleProperty minHeightProperty

      The minimum height for the row. This property is ignored if percentHeight is set.

      The default value is USE_COMPUTED_SIZE, which means the minimum height will be computed to be the largest minimum height of the row's content.

      See Also:
        `getMinHeight()`, `setMinHeight(double)`

    - #### prefHeight

          public final DoubleProperty prefHeightProperty

      The preferred height for the row. This property is ignored if percentHeight is set.

      The default value is USE_COMPUTED_SIZE, which means the preferred height will be computed to be the largest preferred height of the row's content.

      See Also:
        `getPrefHeight()`, `setPrefHeight(double)`

    - #### maxHeight

          public final DoubleProperty maxHeightProperty

      The maximum height for the row. This property is ignored if percentHeight is set.

      The default value is USE_COMPUTED_SIZE, which means the maximum height will be computed to be the smallest maximum height of the row's content.

      See Also:
        `getMaxHeight()`, `setMaxHeight(double)`

    - #### percentHeight

          public final DoubleProperty percentHeightProperty

      The height percentage of the row. If set to a value greater than 0, the row will be resized to that percentage of the available gridpane height and the other size constraints (minHeight, prefHeight, maxHeight, vgrow) will be ignored. The default value is -1, which means the percentage will be ignored.
      See Also:
        `getPercentHeight()`, `setPercentHeight(double)`

    - #### vgrow

          public final ObjectProperty<Priority> vgrowProperty

      The vertical grow priority for the row. If set, the gridpane will use this priority to determine whether the row should be given any additional height if the gridpane is resized larger than its preferred height. This property is ignored if percentHeight is set.

      This default value is null, which means that the row's grow priority will be derived from largest grow priority set on a content node.

      See Also:
        `getVgrow()`, `setVgrow(Priority)`

    - #### valignment

          public final ObjectProperty<VPos> valignmentProperty

      The vertical alignment for the row. If set, will be the default vertical alignment for nodes contained within the row. If this property is set to VPos.BASELINE, then the fillHeight property will be ignored and nodes will always be resized to their preferred heights.
      See Also:
        `getValignment()`, `setValignment(VPos)`

    - #### fillHeight

          public final BooleanProperty fillHeightProperty

      The vertical fill policy for the row. The gridpane will use this property to determine whether nodes contained within the row should be expanded to fill the row's height or kept to their preferred heights.

      The default value is true.

      See Also:
        `isFillHeight()`, `setFillHeight(boolean)`

  - ### Constructor Detail

    - #### RowConstraints

          public RowConstraints()

      Creates a row constraints object with no properties set.

    - #### RowConstraints

          public RowConstraints​(double height)

      Creates a row constraint object with a fixed height. This is a convenience for setting the preferred height constraint to the fixed value and the minHeight and maxHeight constraints to the USE_PREF_SIZE flag to ensure the row is always that height.
      Parameters:
        `height` - the height of the row

    - #### RowConstraints

          public RowConstraints​(double minHeight,
                                double prefHeight,
                                double maxHeight)

      Creates a row constraint object with a fixed size range. This is a convenience for setting the minimum, preferred, and maximum height constraints.
      Parameters:
        `minHeight` - the minimum height
        `prefHeight` - the preferred height
        `maxHeight` - the maximum height

    - #### RowConstraints

          public RowConstraints​(double minHeight,
                                double prefHeight,
                                double maxHeight,
                                Priority vgrow,
                                VPos valignment,
                                boolean fillHeight)

      Creates a row constraint object with a fixed size range, vertical grow priority, vertical alignment, and vertical fill behavior.
      Parameters:
        `minHeight` - the minimum height
        `prefHeight` - the preferred height
        `maxHeight` - the maximum height
        `vgrow` - the vertical grow priority
        `valignment` - the vertical alignment
        `fillHeight` - the vertical fill behavior

  - ### Method Detail

    - #### setMinHeight

          public final void setMinHeight​(double value)

      Sets the value of the property minHeight.
      Property description:
        The minimum height for the row. This property is ignored if percentHeight is set.

        The default value is USE_COMPUTED_SIZE, which means the minimum height will be computed to be the largest minimum height of the row's content.

    - #### getMinHeight

          public final double getMinHeight()

      Gets the value of the property minHeight.
      Property description:
        The minimum height for the row. This property is ignored if percentHeight is set.

        The default value is USE_COMPUTED_SIZE, which means the minimum height will be computed to be the largest minimum height of the row's content.

    - #### minHeightProperty

          public final DoubleProperty minHeightProperty()

      The minimum height for the row. This property is ignored if percentHeight is set.

      The default value is USE_COMPUTED_SIZE, which means the minimum height will be computed to be the largest minimum height of the row's content.

      See Also:
        `getMinHeight()`, `setMinHeight(double)`

    - #### setPrefHeight

          public final void setPrefHeight​(double value)

      Sets the value of the property prefHeight.
      Property description:
        The preferred height for the row. This property is ignored if percentHeight is set.

        The default value is USE_COMPUTED_SIZE, which means the preferred height will be computed to be the largest preferred height of the row's content.

    - #### getPrefHeight

          public final double getPrefHeight()

      Gets the value of the property prefHeight.
      Property description:
        The preferred height for the row. This property is ignored if percentHeight is set.

        The default value is USE_COMPUTED_SIZE, which means the preferred height will be computed to be the largest preferred height of the row's content.

    - #### prefHeightProperty

          public final DoubleProperty prefHeightProperty()

      The preferred height for the row. This property is ignored if percentHeight is set.

      The default value is USE_COMPUTED_SIZE, which means the preferred height will be computed to be the largest preferred height of the row's content.

      See Also:
        `getPrefHeight()`, `setPrefHeight(double)`

    - #### setMaxHeight

          public final void setMaxHeight​(double value)

      Sets the value of the property maxHeight.
      Property description:
        The maximum height for the row. This property is ignored if percentHeight is set.

        The default value is USE_COMPUTED_SIZE, which means the maximum height will be computed to be the smallest maximum height of the row's content.

    - #### getMaxHeight

          public final double getMaxHeight()

      Gets the value of the property maxHeight.
      Property description:
        The maximum height for the row. This property is ignored if percentHeight is set.

        The default value is USE_COMPUTED_SIZE, which means the maximum height will be computed to be the smallest maximum height of the row's content.

    - #### maxHeightProperty

          public final DoubleProperty maxHeightProperty()

      The maximum height for the row. This property is ignored if percentHeight is set.

      The default value is USE_COMPUTED_SIZE, which means the maximum height will be computed to be the smallest maximum height of the row's content.

      See Also:
        `getMaxHeight()`, `setMaxHeight(double)`

    - #### setPercentHeight

          public final void setPercentHeight​(double value)

      Sets the value of the property percentHeight.
      Property description:
        The height percentage of the row. If set to a value greater than 0, the row will be resized to that percentage of the available gridpane height and the other size constraints (minHeight, prefHeight, maxHeight, vgrow) will be ignored. The default value is -1, which means the percentage will be ignored.

    - #### getPercentHeight

          public final double getPercentHeight()

      Gets the value of the property percentHeight.
      Property description:
        The height percentage of the row. If set to a value greater than 0, the row will be resized to that percentage of the available gridpane height and the other size constraints (minHeight, prefHeight, maxHeight, vgrow) will be ignored. The default value is -1, which means the percentage will be ignored.

    - #### percentHeightProperty

          public final DoubleProperty percentHeightProperty()

      The height percentage of the row. If set to a value greater than 0, the row will be resized to that percentage of the available gridpane height and the other size constraints (minHeight, prefHeight, maxHeight, vgrow) will be ignored. The default value is -1, which means the percentage will be ignored.
      See Also:
        `getPercentHeight()`, `setPercentHeight(double)`

    - #### setVgrow

          public final void setVgrow​(Priority value)

      Sets the value of the property vgrow.
      Property description:
        The vertical grow priority for the row. If set, the gridpane will use this priority to determine whether the row should be given any additional height if the gridpane is resized larger than its preferred height. This property is ignored if percentHeight is set.

        This default value is null, which means that the row's grow priority will be derived from largest grow priority set on a content node.

    - #### getVgrow

          public final Priority getVgrow()

      Gets the value of the property vgrow.
      Property description:
        The vertical grow priority for the row. If set, the gridpane will use this priority to determine whether the row should be given any additional height if the gridpane is resized larger than its preferred height. This property is ignored if percentHeight is set.

        This default value is null, which means that the row's grow priority will be derived from largest grow priority set on a content node.

    - #### vgrowProperty

          public final ObjectProperty<Priority> vgrowProperty()

      The vertical grow priority for the row. If set, the gridpane will use this priority to determine whether the row should be given any additional height if the gridpane is resized larger than its preferred height. This property is ignored if percentHeight is set.

      This default value is null, which means that the row's grow priority will be derived from largest grow priority set on a content node.

      See Also:
        `getVgrow()`, `setVgrow(Priority)`

    - #### setValignment

          public final void setValignment​(VPos value)

      Sets the value of the property valignment.
      Property description:
        The vertical alignment for the row. If set, will be the default vertical alignment for nodes contained within the row. If this property is set to VPos.BASELINE, then the fillHeight property will be ignored and nodes will always be resized to their preferred heights.

    - #### getValignment

          public final VPos getValignment()

      Gets the value of the property valignment.
      Property description:
        The vertical alignment for the row. If set, will be the default vertical alignment for nodes contained within the row. If this property is set to VPos.BASELINE, then the fillHeight property will be ignored and nodes will always be resized to their preferred heights.

    - #### valignmentProperty

          public final ObjectProperty<VPos> valignmentProperty()

      The vertical alignment for the row. If set, will be the default vertical alignment for nodes contained within the row. If this property is set to VPos.BASELINE, then the fillHeight property will be ignored and nodes will always be resized to their preferred heights.
      See Also:
        `getValignment()`, `setValignment(VPos)`

    - #### setFillHeight

          public final void setFillHeight​(boolean value)

      Sets the value of the property fillHeight.
      Property description:
        The vertical fill policy for the row. The gridpane will use this property to determine whether nodes contained within the row should be expanded to fill the row's height or kept to their preferred heights.

        The default value is true.

    - #### isFillHeight

          public final boolean isFillHeight()

      Gets the value of the property fillHeight.
      Property description:
        The vertical fill policy for the row. The gridpane will use this property to determine whether nodes contained within the row should be expanded to fill the row's height or kept to their preferred heights.

        The default value is true.

    - #### fillHeightProperty

          public final BooleanProperty fillHeightProperty()

      The vertical fill policy for the row. The gridpane will use this property to determine whether nodes contained within the row should be expanded to fill the row's height or kept to their preferred heights.

      The default value is true.

      See Also:
        `isFillHeight()`, `setFillHeight(boolean)`

    - #### toString

          public String toString()

      Returns a string representation of this `RowConstraints` object.
      Overrides:
        `toString` in class `Object`
      Returns:
        a string representation of this `RowConstraints` object.