GridPane (JavaFX 8)

java.lang.Object
- javafx.scene.Node
- - javafx.scene.Parent
  - - javafx.scene.layout.Region
    - - javafx.scene.layout.Pane
      - javafx.scene.layout.GridPane

All Implemented Interfaces:: Styleable, EventTarget

public class GridPane
extends Pane

GridPane lays out its children within a flexible grid of rows and columns. If a border and/or padding is set, then its content will be layed out within those insets.

A child may be placed anywhere within the grid and may span multiple rows/columns. Children may freely overlap within rows/columns and their stacking order will be defined by the order of the gridpane's children list (0th node in back, last node in front).

GridPane may be styled with backgrounds and borders using CSS. See Region superclass for details.

Grid Constraints

A child's placement within the grid is defined by it's layout constraints:

Constraint	Type	Description
columnIndex	integer	column where child's layout area starts.
rowIndex	integer	row where child's layout area starts.
columnSpan	integer	the number of columns the child's layout area spans horizontally.
rowSpan	integer	the number of rows the child's layout area spans vertically.

If the row/column indices are not explicitly set, then the child will be placed in the first row/column. If row/column spans are not set, they will default to 1. A child's placement constraints can be changed dynamically and the gridpane will update accordingly.

The total number of rows/columns does not need to be specified up front as the gridpane will automatically expand/contract the grid to accommodate the content.

To use the GridPane, an application needs to set the layout constraints on the children and add those children to the gridpane instance. Constraints are set on the children using static setter methods on the GridPane class:

     GridPane gridpane = new GridPane();

     // Set one constraint at a time...
     // Places the button at the first row and second column
     Button button = new Button();
     GridPane.setRowIndex(button, 0);
     GridPane.setColumnIndex(button, 1);

     // or convenience methods set more than one constraint at once...
     Label label = new Label();
     GridPane.setConstraints(label, 2, 0); // column=2 row=0

     // don't forget to add children to gridpane
     gridpane.getChildren().addAll(button, label);

Applications may also use convenience methods which combine the steps of setting the constraints and adding the children:


     GridPane gridpane = new GridPane();
     gridpane.add(new Button(), 1, 0); // column=1 row=0
     gridpane.add(new Label(), 2, 0);  // column=2 row=0

Row/Column Sizing

By default, rows and columns will be sized to fit their content; a column will be wide enough to accommodate the widest child, a row tall enough to fit the tallest child.However, if an application needs to explicitly control the size of rows or columns, it may do so by adding RowConstraints and ColumnConstraints objects to specify those metrics. For example, to create a grid with two fixed-width columns:


     GridPane gridpane = new GridPane();
     gridpane.getColumnConstraints().add(new ColumnConstraints(100)); // column 0 is 100 wide
     gridpane.getColumnConstraints().add(new ColumnConstraints(200)); // column 1 is 200 wide

By default the gridpane will resize rows/columns to their preferred sizes (either computed from content or fixed), even if the gridpane is resized larger than its preferred size. If an application needs a particular row or column to grow if there is extra space, it may set its grow priority on the RowConstraints or ColumnConstraints object. For example:


     GridPane gridpane = new GridPane();
     ColumnConstraints column1 = new ColumnConstraints(100,100,Double.MAX_VALUE);
     column1.setHgrow(Priority.ALWAYS);
     ColumnConstraints column2 = new ColumnConstraints(100);
     gridpane.getColumnConstraints().addAll(column1, column2); // first column gets any extra width

Note: Nodes spanning multiple rows/columns will be also size to the preferred sizes. The affected rows/columns are resized by the following priority: grow priorities, last row. This is with respect to row/column constraints.

Percentage Sizing

Alternatively, RowConstraints and ColumnConstraints allow the size to be specified as a percentage of gridpane's available space:


     GridPane gridpane = new GridPane();
     ColumnConstraints column1 = new ColumnConstraints();
     column1.setPercentWidth(50);
     ColumnConstraints column2 = new ColumnConstraints();
     column2.setPercentWidth(50);
     gridpane.getColumnConstraints().addAll(column1, column2); // each get 50% of width

If a percentage value is set on a row/column, then that value takes precedent and the row/column's min, pref, max, and grow constraints will be ignored.

Note that if the sum of the widthPercent (or heightPercent) values total greater than 100, the values will be treated as weights. e.g. if 3 columns are each given a widthPercent of 50, then each will be allocated 1/3 of the gridpane's available width (50/(50+50+50)).

Mixing Size Types

An application may freely mix the size-types of rows/columns (computed from content, fixed, or percentage). The percentage rows/columns will always be allocated space first based on their percentage of the gridpane's available space (size minus insets and gaps). The remaining space will be allocated to rows/columns given their minimum, preferred, and maximum sizes and grow priorities.

Resizable Range

A gridpane's parent will resize the gridpane within the gridpane's resizable range during layout. By default the gridpane computes this range based on its content and row/column constraints as outlined in the table below.

	width	height
minimum	left/right insets plus the sum of each column's min width.	top/bottom insets plus the sum of each row's min height.
preferred	left/right insets plus the sum of each column's pref width.	top/bottom insets plus the sum of each row's pref height.
maximum	Double.MAX_VALUE	Double.MAX_VALUE

A gridpane's unbounded maximum width and height are an indication to the parent that it may be resized beyond its preferred size to fill whatever space is assigned to it.

GridPane provides properties for setting the size range directly. These properties default to the sentinel value USE_COMPUTED_SIZE, however the application may set them to other values as needed:

     gridpane.setPrefSize(300, 300);
     // never size the gridpane larger than its preferred size:
     gridpane.setMaxSize(Region.USE_COMPUTED_SIZE, Region.USE_COMPUTED_SIZE);

Applications may restore the computed values by setting these properties back to USE_COMPUTED_SIZE.

GridPane does not clip its content by default, so it is possible that childrens' bounds may extend outside its own bounds if a child's min size prevents it from being fit within it space.

Optional Layout Constraints

An application may set additional constraints on children to customize how the child is sized and positioned within the layout area established by it's row/column indices/spans:

Constraint	Type	Description
halignment	javafx.geometry.HPos	The horizontal alignment of the child within its layout area.
valignment	javafx.geometry.VPos	The vertical alignment of the child within its layout area.
hgrow	javafx.scene.layout.Priority	The horizontal grow priority of the child.
vgrow	javafx.scene.layout.Priority	The vertical grow priority of the child.
margin	javafx.geometry.Insets	Margin space around the outside of the child.

By default the alignment of a child within its layout area is defined by the alignment set for the row and column. If an individual alignment constraint is set on a child, that alignment will override the row/column alignment only for that child. Alignment of other children in the same row or column will not be affected.

Grow priorities, on the other hand, can only be applied to entire rows or columns. Therefore, if a grow priority constraint is set on a single child, it will be used to compute the default grow priority of the encompassing row/column. If a grow priority is set directly on a RowConstraint or ColumnConstraint object, it will override the value computed from content.

Since:: JavaFX 2.0

Property Summary

All Methods Instance Methods Concrete Methods
Type	Property and Description
`ObjectProperty<Pos>`	`alignment` The alignment of of the grid within the gridpane's width and height.
`BooleanProperty`	`gridLinesVisible` For debug purposes only: controls whether lines are displayed to show the gridpane's rows and columns.
`DoubleProperty`	`hgap` The width of the horizontal gaps between columns.
`DoubleProperty`	`vgap` The height of the vertical gaps between rows.

Properties inherited from class javafx.scene.layout.Region
background, border, cacheShape, centerShape, height, insets, maxHeight, maxWidth, minHeight, minWidth, opaqueInsets, padding, prefHeight, prefWidth, scaleShape, shape, snapToPixel, width

Properties inherited from class javafx.scene.Parent
needsLayout

Properties inherited from class javafx.scene.Node
accessibleHelp, accessibleRoleDescription, accessibleRole, accessibleText, blendMode, boundsInLocal, boundsInParent, cacheHint, cache, clip, cursor, depthTest, disabled, disable, effectiveNodeOrientation, effect, eventDispatcher, focused, focusTraversable, hover, id, inputMethodRequests, layoutBounds, layoutX, layoutY, localToParentTransform, localToSceneTransform, managed, mouseTransparent, nodeOrientation, onContextMenuRequested, onDragDetected, onDragDone, onDragDropped, onDragEntered, onDragExited, onDragOver, onInputMethodTextChanged, onKeyPressed, onKeyReleased, onKeyTyped, onMouseClicked, onMouseDragEntered, onMouseDragExited, onMouseDragged, onMouseDragOver, onMouseDragReleased, onMouseEntered, onMouseExited, onMouseMoved, onMousePressed, onMouseReleased, onRotate, onRotationFinished, onRotationStarted, onScrollFinished, onScroll, onScrollStarted, onSwipeDown, onSwipeLeft, onSwipeRight, onSwipeUp, onTouchMoved, onTouchPressed, onTouchReleased, onTouchStationary, onZoomFinished, onZoom, onZoomStarted, opacity, parent, pickOnBounds, pressed, rotate, rotationAxis, scaleX, scaleY, scaleZ, scene, style, translateX, translateY, translateZ, visible

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`REMAINING` Sentinel value which may be set on a child's row/column span constraint to indicate that it should span the remaining rows/columns.

Fields inherited from class javafx.scene.layout.Region
USE_COMPUTED_SIZE, USE_PREF_SIZE

Fields inherited from class javafx.scene.Node
BASELINE_OFFSET_SAME_AS_HEIGHT

Constructor Summary

Constructors
Constructor and Description

GridPane()
Creates a GridPane layout with hgap/vgap = 0 and TOP_LEFT alignment.

Constructors
Constructor and Description
`GridPane()` Creates a GridPane layout with hgap/vgap = 0 and TOP_LEFT alignment.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`add(Node child, int columnIndex, int rowIndex)` Adds a child to the gridpane at the specified column,row position.
`void`	`add(Node child, int columnIndex, int rowIndex, int colspan, int rowspan)` Adds a child to the gridpane at the specified column,row position and spans.
`void`	`addColumn(int columnIndex, Node... children)` Convenience method for placing the specified nodes sequentially in a given column of the gridpane.
`void`	`addRow(int rowIndex, Node... children)` Convenience method for placing the specified nodes sequentially in a given row of the gridpane.
`ObjectProperty<Pos>`	`alignmentProperty()` The alignment of of the grid within the gridpane's width and height.
`static void`	`clearConstraints(Node child)` Removes all gridpane constraints from the child node.
`protected double`	`computeMinHeight(double width)` Computes the minimum height of this region.
`protected double`	`computeMinWidth(double height)` Computes the minimum width of this region.
`protected double`	`computePrefHeight(double width)` Computes the preferred height of this region for the given width; Region subclasses should override this method to return an appropriate value based on their content and layout strategy.
`protected double`	`computePrefWidth(double height)` Computes the preferred width of this region for the given height.
`Pos`	`getAlignment()` Gets the value of the property alignment.
`static List<CssMetaData<? extends Styleable,?>>`	`getClassCssMetaData()`
`ObservableList<ColumnConstraints>`	`getColumnConstraints()` Returns list of column constraints.
`static Integer`	`getColumnIndex(Node child)` Returns the child's column index constraint if set.
`static Integer`	`getColumnSpan(Node child)` Returns the child's column-span constraint if set.
`Orientation`	`getContentBias()` Returns the orientation of a node's resizing bias for layout purposes.
`List<CssMetaData<? extends Styleable,?>>`	`getCssMetaData()` This method should delegate to `Node.getClassCssMetaData()` so that a Node's CssMetaData can be accessed without the need for reflection.
`static HPos`	`getHalignment(Node child)` Returns the child's halignment constraint if set.
`double`	`getHgap()` Gets the value of the property hgap.
`static Priority`	`getHgrow(Node child)` Returns the child's hgrow constraint if set.
`static Insets`	`getMargin(Node child)` Returns the child's margin constraint if set.
`ObservableList<RowConstraints>`	`getRowConstraints()` Returns list of row constraints.
`static Integer`	`getRowIndex(Node child)` Returns the child's row index constraint if set.
`static Integer`	`getRowSpan(Node child)` Returns the child's row-span constraint if set.
`static VPos`	`getValignment(Node child)` Returns the child's valignment constraint if set.
`double`	`getVgap()` Gets the value of the property vgap.
`static Priority`	`getVgrow(Node child)` Returns the child's vgrow constraint if set.
`BooleanProperty`	`gridLinesVisibleProperty()` For debug purposes only: controls whether lines are displayed to show the gridpane's rows and columns.
`DoubleProperty`	`hgapProperty()` The width of the horizontal gaps between columns.
`static Boolean`	`isFillHeight(Node child)` Returns the child's vertical fill policy if set
`static Boolean`	`isFillWidth(Node child)` Returns the child's horizontal fill policy if set
`boolean`	`isGridLinesVisible()` Gets the value of the property gridLinesVisible.
`protected void`	`layoutChildren()` Invoked during the layout pass to layout the children in this `Parent`.
`void`	`requestLayout()` Requests a layout pass to be performed before the next scene is rendered.
`void`	`setAlignment(Pos value)` Sets the value of the property alignment.
`static void`	`setColumnIndex(Node child, Integer value)` Sets the column index for the child when contained by a gridpane so that it will be positioned starting in that column of the gridpane.
`static void`	`setColumnSpan(Node child, Integer value)` Sets the column span for the child when contained by a gridpane so that it will span that number of columns horizontally.
`static void`	`setConstraints(Node child, int columnIndex, int rowIndex)` Sets the column,row indeces for the child when contained in a gridpane.
`static void`	`setConstraints(Node child, int columnIndex, int rowIndex, int columnspan, int rowspan)` Sets the column, row, column-span, and row-span value for the child when contained in a gridpane.
`static void`	`setConstraints(Node child, int columnIndex, int rowIndex, int columnspan, int rowspan, HPos halignment, VPos valignment)` Sets the grid position, spans, and alignment for the child when contained in a gridpane.
`static void`	`setConstraints(Node child, int columnIndex, int rowIndex, int columnspan, int rowspan, HPos halignment, VPos valignment, Priority hgrow, Priority vgrow)` Sets the grid position, spans, and alignment for the child when contained in a gridpane.
`static void`	`setConstraints(Node child, int columnIndex, int rowIndex, int columnspan, int rowspan, HPos halignment, VPos valignment, Priority hgrow, Priority vgrow, Insets margin)` Sets the grid position, spans, alignment, grow priorities, and margin for the child when contained in a gridpane.
`static void`	`setFillHeight(Node child, Boolean value)` Sets the vertical fill policy for the child when contained by a gridpane.
`static void`	`setFillWidth(Node child, Boolean value)` Sets the horizontal fill policy for the child when contained by a gridpane.
`void`	`setGridLinesVisible(boolean value)` Sets the value of the property gridLinesVisible.
`static void`	`setHalignment(Node child, HPos value)` Sets the horizontal alignment for the child when contained by a gridpane.
`void`	`setHgap(double value)` Sets the value of the property hgap.
`static void`	`setHgrow(Node child, Priority value)` Sets the horizontal grow priority for the child when contained by a gridpane.
`static void`	`setMargin(Node child, Insets value)` Sets the margin for the child when contained by a gridpane.
`static void`	`setRowIndex(Node child, Integer value)` Sets the row index for the child when contained by a gridpane so that it will be positioned starting in that row of the gridpane.
`static void`	`setRowSpan(Node child, Integer value)` Sets the row span for the child when contained by a gridpane so that it will span that number of rows vertically.
`static void`	`setValignment(Node child, VPos value)` Sets the vertical alignment for the child when contained by a gridpane.
`void`	`setVgap(double value)` Sets the value of the property vgap.
`static void`	`setVgrow(Node child, Priority value)` Sets the vertical grow priority for the child when contained by a gridpane.
`String`	`toString()` Returns a string representation of this `GridPane` object.
`DoubleProperty`	`vgapProperty()` The height of the vertical gaps between rows.

Methods inherited from class javafx.scene.layout.Pane
getChildren

Methods inherited from class javafx.scene.layout.Region
backgroundProperty, borderProperty, cacheShapeProperty, centerShapeProperty, computeMaxHeight, computeMaxWidth, getBackground, getBorder, getHeight, getInsets, getMaxHeight, getMaxWidth, getMinHeight, getMinWidth, getOpaqueInsets, getPadding, getPrefHeight, getPrefWidth, getShape, getUserAgentStylesheet, getWidth, heightProperty, insetsProperty, isCacheShape, isCenterShape, isResizable, isScaleShape, isSnapToPixel, layoutInArea, layoutInArea, layoutInArea, layoutInArea, maxHeight, maxHeightProperty, maxWidth, maxWidthProperty, minHeight, minHeightProperty, minWidth, minWidthProperty, opaqueInsetsProperty, paddingProperty, positionInArea, positionInArea, prefHeight, prefHeightProperty, prefWidth, prefWidthProperty, resize, scaleShapeProperty, setBackground, setBorder, setCacheShape, setCenterShape, setHeight, setMaxHeight, setMaxSize, setMaxWidth, setMinHeight, setMinSize, setMinWidth, setOpaqueInsets, setPadding, setPrefHeight, setPrefSize, setPrefWidth, setScaleShape, setShape, setSnapToPixel, setWidth, shapeProperty, snappedBottomInset, snappedLeftInset, snappedRightInset, snappedTopInset, snapPosition, snapSize, snapSpace, snapToPixelProperty, widthProperty

Methods inherited from class javafx.scene.Parent
getBaselineOffset, getChildrenUnmodifiable, getManagedChildren, getStylesheets, isNeedsLayout, layout, lookup, needsLayoutProperty, queryAccessibleAttribute, requestParentLayout, setNeedsLayout, updateBounds

Methods inherited from class javafx.scene.Node
accessibleHelpProperty, accessibleRoleDescriptionProperty, accessibleRoleProperty, accessibleTextProperty, addEventFilter, addEventHandler, applyCss, autosize, blendModeProperty, boundsInLocalProperty, boundsInParentProperty, buildEventDispatchChain, cacheHintProperty, cacheProperty, clipProperty, computeAreaInScreen, contains, contains, cursorProperty, depthTestProperty, disabledProperty, disableProperty, effectiveNodeOrientationProperty, effectProperty, eventDispatcherProperty, executeAccessibleAction, fireEvent, focusedProperty, focusTraversableProperty, getAccessibleHelp, getAccessibleRole, getAccessibleRoleDescription, getAccessibleText, getBlendMode, getBoundsInLocal, getBoundsInParent, getCacheHint, getClip, getCursor, getDepthTest, getEffect, getEffectiveNodeOrientation, getEventDispatcher, getId, getInputMethodRequests, getLayoutBounds, getLayoutX, getLayoutY, getLocalToParentTransform, getLocalToSceneTransform, getNodeOrientation, getOnContextMenuRequested, getOnDragDetected, getOnDragDone, getOnDragDropped, getOnDragEntered, getOnDragExited, getOnDragOver, getOnInputMethodTextChanged, getOnKeyPressed, getOnKeyReleased, getOnKeyTyped, getOnMouseClicked, getOnMouseDragEntered, getOnMouseDragExited, getOnMouseDragged, getOnMouseDragOver, getOnMouseDragReleased, getOnMouseEntered, getOnMouseExited, getOnMouseMoved, getOnMousePressed, getOnMouseReleased, getOnRotate, getOnRotationFinished, getOnRotationStarted, getOnScroll, getOnScrollFinished, getOnScrollStarted, getOnSwipeDown, getOnSwipeLeft, getOnSwipeRight, getOnSwipeUp, getOnTouchMoved, getOnTouchPressed, getOnTouchReleased, getOnTouchStationary, getOnZoom, getOnZoomFinished, getOnZoomStarted, getOpacity, getParent, getProperties, getPseudoClassStates, getRotate, getRotationAxis, getScaleX, getScaleY, getScaleZ, getScene, getStyle, getStyleableParent, getStyleClass, getTransforms, getTranslateX, getTranslateY, getTranslateZ, getTypeSelector, getUserData, hasProperties, hoverProperty, idProperty, inputMethodRequestsProperty, intersects, intersects, isCache, isDisable, isDisabled, isFocused, isFocusTraversable, isHover, isManaged, isMouseTransparent, isPickOnBounds, isPressed, isVisible, layoutBoundsProperty, layoutXProperty, layoutYProperty, localToParent, localToParent, localToParent, localToParent, localToParent, localToParentTransformProperty, localToScene, localToScene, localToScene, localToScene, localToScene, localToScene, localToScene, localToScene, localToScene, localToScene, localToSceneTransformProperty, localToScreen, localToScreen, localToScreen, localToScreen, localToScreen, lookupAll, managedProperty, mouseTransparentProperty, nodeOrientationProperty, notifyAccessibleAttributeChanged, onContextMenuRequestedProperty, onDragDetectedProperty, onDragDoneProperty, onDragDroppedProperty, onDragEnteredProperty, onDragExitedProperty, onDragOverProperty, onInputMethodTextChangedProperty, onKeyPressedProperty, onKeyReleasedProperty, onKeyTypedProperty, onMouseClickedProperty, onMouseDragEnteredProperty, onMouseDragExitedProperty, onMouseDraggedProperty, onMouseDragOverProperty, onMouseDragReleasedProperty, onMouseEnteredProperty, onMouseExitedProperty, onMouseMovedProperty, onMousePressedProperty, onMouseReleasedProperty, onRotateProperty, onRotationFinishedProperty, onRotationStartedProperty, onScrollFinishedProperty, onScrollProperty, onScrollStartedProperty, onSwipeDownProperty, onSwipeLeftProperty, onSwipeRightProperty, onSwipeUpProperty, onTouchMovedProperty, onTouchPressedProperty, onTouchReleasedProperty, onTouchStationaryProperty, onZoomFinishedProperty, onZoomProperty, onZoomStartedProperty, opacityProperty, parentProperty, parentToLocal, parentToLocal, parentToLocal, parentToLocal, parentToLocal, pickOnBoundsProperty, pressedProperty, pseudoClassStateChanged, relocate, removeEventFilter, removeEventHandler, requestFocus, resizeRelocate, rotateProperty, rotationAxisProperty, scaleXProperty, scaleYProperty, scaleZProperty, sceneProperty, sceneToLocal, sceneToLocal, sceneToLocal, sceneToLocal, sceneToLocal, sceneToLocal, sceneToLocal, sceneToLocal, screenToLocal, screenToLocal, screenToLocal, setAccessibleHelp, setAccessibleRole, setAccessibleRoleDescription, setAccessibleText, setBlendMode, setCache, setCacheHint, setClip, setCursor, setDepthTest, setDisable, setDisabled, setEffect, setEventDispatcher, setEventHandler, setFocused, setFocusTraversable, setHover, setId, setInputMethodRequests, setLayoutX, setLayoutY, setManaged, setMouseTransparent, setNodeOrientation, setOnContextMenuRequested, setOnDragDetected, setOnDragDone, setOnDragDropped, setOnDragEntered, setOnDragExited, setOnDragOver, setOnInputMethodTextChanged, setOnKeyPressed, setOnKeyReleased, setOnKeyTyped, setOnMouseClicked, setOnMouseDragEntered, setOnMouseDragExited, setOnMouseDragged, setOnMouseDragOver, setOnMouseDragReleased, setOnMouseEntered, setOnMouseExited, setOnMouseMoved, setOnMousePressed, setOnMouseReleased, setOnRotate, setOnRotationFinished, setOnRotationStarted, setOnScroll, setOnScrollFinished, setOnScrollStarted, setOnSwipeDown, setOnSwipeLeft, setOnSwipeRight, setOnSwipeUp, setOnTouchMoved, setOnTouchPressed, setOnTouchReleased, setOnTouchStationary, setOnZoom, setOnZoomFinished, setOnZoomStarted, setOpacity, setPickOnBounds, setPressed, setRotate, setRotationAxis, setScaleX, setScaleY, setScaleZ, setStyle, setTranslateX, setTranslateY, setTranslateZ, setUserData, setVisible, snapshot, snapshot, startDragAndDrop, startFullDrag, styleProperty, toBack, toFront, translateXProperty, translateYProperty, translateZProperty, usesMirroring, visibleProperty

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Property Detail
  - hgap
```
public final DoubleProperty hgapProperty
```
    The width of the horizontal gaps between columns.
    
    See Also:
    
    getHgap(), setHgap(double)
  - vgap
```
public final DoubleProperty vgapProperty
```
    The height of the vertical gaps between rows.
    
    See Also:
    
    getVgap(), setVgap(double)
  - alignment
```
public final ObjectProperty<Pos> alignmentProperty
```
    The alignment of of the grid within the gridpane's width and height.
    
    See Also:
    
    getAlignment(), setAlignment(Pos)
  - gridLinesVisible
```
public final BooleanProperty gridLinesVisibleProperty
```
    For debug purposes only: controls whether lines are displayed to show the gridpane's rows and columns. Default is false.
    
    See Also:
    
    isGridLinesVisible(), setGridLinesVisible(boolean)
- Field Detail
  - REMAINING
```
public static final int REMAINING
```
    Sentinel value which may be set on a child's row/column span constraint to indicate that it should span the remaining rows/columns.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - GridPane
```
public GridPane()
```
    Creates a GridPane layout with hgap/vgap = 0 and TOP_LEFT alignment.
- Method Detail
  - setRowIndex
```
public static void setRowIndex(Node child,
                               Integer value)
```
    Sets the row index for the child when contained by a gridpane so that it will be positioned starting in that row of the gridpane. If a gridpane child has no row index set, it will be positioned in the first row. Setting the value to null will remove the constraint.
    
    Parameters:
    
    child - the child node of a gridpane
    
    value - the row index of the child
  - getRowIndex
```
public static Integer getRowIndex(Node child)
```
    Returns the child's row index constraint if set.
    
    Parameters:
    
    child - the child node of a gridpane
    
    Returns:
    
    the row index for the child or null if no row index was set
  - setColumnIndex
```
public static void setColumnIndex(Node child,
                                  Integer value)
```
    Sets the column index for the child when contained by a gridpane so that it will be positioned starting in that column of the gridpane. If a gridpane child has no column index set, it will be positioned in the first column. Setting the value to null will remove the constraint.
    
    Parameters:
    
    child - the child node of a gridpane
    
    value - the column index of the child
  - getColumnIndex
```
public static Integer getColumnIndex(Node child)
```
    Returns the child's column index constraint if set.
    
    Parameters:
    
    child - the child node of a gridpane
    
    Returns:
    
    the column index for the child or null if no column index was set
  - setRowSpan
```
public static void setRowSpan(Node child,
                              Integer value)
```
    Sets the row span for the child when contained by a gridpane so that it will span that number of rows vertically. This may be set to REMAINING, which will cause the span to extend across all the remaining rows.
    If a gridpane child has no row span set, it will default to spanning one row. Setting the value to null will remove the constraint.
    
    Parameters:
    
    child - the child node of a gridpane
    
    value - the row span of the child
  - getRowSpan
```
public static Integer getRowSpan(Node child)
```
    Returns the child's row-span constraint if set.
    
    Parameters:
    
    child - the child node of a gridpane
    
    Returns:
    
    the row span for the child or null if no row span was set
  - setColumnSpan
```
public static void setColumnSpan(Node child,
                                 Integer value)
```
    Sets the column span for the child when contained by a gridpane so that it will span that number of columns horizontally. This may be set to REMAINING, which will cause the span to extend across all the remaining columns.
    If a gridpane child has no column span set, it will default to spanning one column. Setting the value to null will remove the constraint.
    
    Parameters:
    
    child - the child node of a gridpane
    
    value - the column span of the child
  - getColumnSpan
```
public static Integer getColumnSpan(Node child)
```
    Returns the child's column-span constraint if set.
    
    Parameters:
    
    child - the child node of a gridpane
    
    Returns:
    
    the column span for the child or null if no column span was set
  - setMargin
```
public static void setMargin(Node child,
                             Insets value)
```
    Sets the margin for the child when contained by a gridpane. If set, the gridpane will lay it out with the margin space around it. Setting the value to null will remove the constraint.
    
    Parameters:
    
    child - the child node of a gridpane
    
    value - the margin of space around the child
  - getMargin
```
public static Insets getMargin(Node child)
```
    Returns the child's margin constraint if set.
    
    Parameters:
    
    child - the child node of a gridpane
    
    Returns:
    
    the margin for the child or null if no margin was set
  - setHalignment
```
public static void setHalignment(Node child,
                                 HPos value)
```
    Sets the horizontal alignment for the child when contained by a gridpane. If set, will override the gridpane's default horizontal alignment. Setting the value to null will remove the constraint.
    
    Parameters:
    
    child - the child node of a gridpane
    
    value - the hozizontal alignment for the child
  - getHalignment
```
public static HPos getHalignment(Node child)
```
    Returns the child's halignment constraint if set.
    
    Parameters:
    
    child - the child node of a gridpane
    
    Returns:
    
    the horizontal alignment for the child or null if no alignment was set
  - setValignment
```
public static void setValignment(Node child,
                                 VPos value)
```
    Sets the vertical alignment for the child when contained by a gridpane. If set, will override the gridpane's default vertical alignment. Setting the value to null will remove the constraint.
    
    Parameters:
    
    child - the child node of a gridpane
    
    value - the vertical alignment for the child
  - getValignment
```
public static VPos getValignment(Node child)
```
    Returns the child's valignment constraint if set.
    
    Parameters:
    
    child - the child node of a gridpane
    
    Returns:
    
    the vertical alignment for the child or null if no alignment was set
  - setHgrow
```
public static void setHgrow(Node child,
                            Priority value)
```
    Sets the horizontal grow priority for the child when contained by a gridpane. If set, the gridpane will use the priority to allocate the child additional horizontal space if the gridpane is resized larger than it's preferred width. Setting the value to null will remove the constraint.
    
    Parameters:
    
    child - the child of a gridpane
    
    value - the horizontal grow priority for the child
  - getHgrow
```
public static Priority getHgrow(Node child)
```
    Returns the child's hgrow constraint if set.
    
    Parameters:
    
    child - the child node of a gridpane
    
    Returns:
    
    the horizontal grow priority for the child or null if no priority was set
  - setVgrow
```
public static void setVgrow(Node child,
                            Priority value)
```
    Sets the vertical grow priority for the child when contained by a gridpane. If set, the gridpane will use the priority to allocate the child additional vertical space if the gridpane is resized larger than it's preferred height. Setting the value to null will remove the constraint.
    
    Parameters:
    
    child - the child of a gridpane
    
    value - the vertical grow priority for the child
  - getVgrow
```
public static Priority getVgrow(Node child)
```
    Returns the child's vgrow constraint if set.
    
    Parameters:
    
    child - the child node of a gridpane
    
    Returns:
    
    the vertical grow priority for the child or null if no priority was set
  - setFillWidth
```
public static void setFillWidth(Node child,
                                Boolean value)
```
    Sets the horizontal fill policy for the child when contained by a gridpane. If set, the gridpane will use the policy to determine whether node should be expanded to fill the column or resized to its preferred width. Setting the value to null will remove the constraint. If not value is specified for the node nor for the column, the default value is true.
    
    Parameters:
    
    child - the child node of a gridpane
    
    value - the horizontal fill policy or null for unset
    
    Since:
    
    JavaFX 8.0
  - isFillWidth
```
public static Boolean isFillWidth(Node child)
```
    Returns the child's horizontal fill policy if set
    
    Parameters:
    
    child - the child node of a gridpane
    
    Returns:
    
    the horizontal fill policy for the child or null if no policy was set
    
    Since:
    
    JavaFX 8.0
  - setFillHeight
```
public static void setFillHeight(Node child,
                                 Boolean value)
```
    Sets the vertical fill policy for the child when contained by a gridpane. If set, the gridpane will use the policy to determine whether node should be expanded to fill the row or resized to its preferred height. Setting the value to null will remove the constraint. If not value is specified for the node nor for the row, the default value is true.
    
    Parameters:
    
    child - the child node of a gridpane
    
    value - the vertical fill policy or null for unset
    
    Since:
    
    JavaFX 8.0
  - isFillHeight
```
public static Boolean isFillHeight(Node child)
```
    Returns the child's vertical fill policy if set
    
    Parameters:
    
    child - the child node of a gridpane
    
    Returns:
    
    the vertical fill policy for the child or null if no policy was set
    
    Since:
    
    JavaFX 8.0
  - setConstraints
```
public static void setConstraints(Node child,
                                  int columnIndex,
                                  int rowIndex)
```
    Sets the column,row indeces for the child when contained in a gridpane.
    
    Parameters:
    
    child - the child node of a gridpane
    
    columnIndex - the column index position for the child
    
    rowIndex - the row index position for the child
  - setConstraints
```
public static void setConstraints(Node child,
                                  int columnIndex,
                                  int rowIndex,
                                  int columnspan,
                                  int rowspan)
```
    Sets the column, row, column-span, and row-span value for the child when contained in a gridpane.
    
    Parameters:
    
    child - the child node of a gridpane
    
    columnIndex - the column index position for the child
    
    rowIndex - the row index position for the child
    
    columnspan - the number of columns the child should span
    
    rowspan - the number of rows the child should span
  - setConstraints
```
public static void setConstraints(Node child,
                                  int columnIndex,
                                  int rowIndex,
                                  int columnspan,
                                  int rowspan,
                                  HPos halignment,
                                  VPos valignment)
```
    Sets the grid position, spans, and alignment for the child when contained in a gridpane.
    
    Parameters:
    
    child - the child node of a gridpane
    
    columnIndex - the column index position for the child
    
    rowIndex - the row index position for the child
    
    columnspan - the number of columns the child should span
    
    rowspan - the number of rows the child should span
    
    halignment - the horizontal alignment of the child
    
    valignment - the vertical alignment of the child
  - setConstraints
```
public static void setConstraints(Node child,
                                  int columnIndex,
                                  int rowIndex,
                                  int columnspan,
                                  int rowspan,
                                  HPos halignment,
                                  VPos valignment,
                                  Priority hgrow,
                                  Priority vgrow)
```
    Sets the grid position, spans, and alignment for the child when contained in a gridpane.
    
    Parameters:
    
    child - the child node of a gridpane
    
    columnIndex - the column index position for the child
    
    rowIndex - the row index position for the child
    
    columnspan - the number of columns the child should span
    
    rowspan - the number of rows the child should span
    
    halignment - the horizontal alignment of the child
    
    valignment - the vertical alignment of the child
    
    hgrow - the horizontal grow priority of the child
    
    vgrow - the vertical grow priority of the child
  - setConstraints
```
public static void setConstraints(Node child,
                                  int columnIndex,
                                  int rowIndex,
                                  int columnspan,
                                  int rowspan,
                                  HPos halignment,
                                  VPos valignment,
                                  Priority hgrow,
                                  Priority vgrow,
                                  Insets margin)
```
    Sets the grid position, spans, alignment, grow priorities, and margin for the child when contained in a gridpane.
    
    Parameters:
    
    child - the child node of a gridpane
    
    columnIndex - the column index position for the child
    
    rowIndex - the row index position for the child
    
    columnspan - the number of columns the child should span
    
    rowspan - the number of rows the child should span
    
    halignment - the horizontal alignment of the child
    
    valignment - the vertical alignment of the child
    
    hgrow - the horizontal grow priority of the child
    
    vgrow - the vertical grow priority of the child
    
    margin - the margin of space around the child
  - clearConstraints
```
public static void clearConstraints(Node child)
```
    Removes all gridpane constraints from the child node.
    
    Parameters:
    
    child - the child node
  - hgapProperty
```
public final DoubleProperty hgapProperty()
```
    The width of the horizontal gaps between columns.
    
    See Also:
    
    getHgap(), setHgap(double)
  - setHgap
```
public final void setHgap(double value)
```
    Sets the value of the property hgap.
    
    Property description:
    
    The width of the horizontal gaps between columns.
  - getHgap
```
public final double getHgap()
```
    Gets the value of the property hgap.
    
    Property description:
    
    The width of the horizontal gaps between columns.
  - vgapProperty
```
public final DoubleProperty vgapProperty()
```
    The height of the vertical gaps between rows.
    
    See Also:
    
    getVgap(), setVgap(double)
  - setVgap
```
public final void setVgap(double value)
```
    Sets the value of the property vgap.
    
    Property description:
    
    The height of the vertical gaps between rows.
  - getVgap
```
public final double getVgap()
```
    Gets the value of the property vgap.
    
    Property description:
    
    The height of the vertical gaps between rows.
  - alignmentProperty
```
public final ObjectProperty<Pos> alignmentProperty()
```
    The alignment of of the grid within the gridpane's width and height.
    
    See Also:
    
    getAlignment(), setAlignment(Pos)
  - setAlignment
```
public final void setAlignment(Pos value)
```
    Sets the value of the property alignment.
    
    Property description:
    
    The alignment of of the grid within the gridpane's width and height.
  - getAlignment
```
public final Pos getAlignment()
```
    Gets the value of the property alignment.
    
    Property description:
    
    The alignment of of the grid within the gridpane's width and height.
  - gridLinesVisibleProperty
```
public final BooleanProperty gridLinesVisibleProperty()
```
    For debug purposes only: controls whether lines are displayed to show the gridpane's rows and columns. Default is false.
    
    See Also:
    
    isGridLinesVisible(), setGridLinesVisible(boolean)
  - setGridLinesVisible
```
public final void setGridLinesVisible(boolean value)
```
    Sets the value of the property gridLinesVisible.
    
    Property description:
    
    For debug purposes only: controls whether lines are displayed to show the gridpane's rows and columns. Default is false.
  - isGridLinesVisible
```
public final boolean isGridLinesVisible()
```
    Gets the value of the property gridLinesVisible.
    
    Property description:
    
    For debug purposes only: controls whether lines are displayed to show the gridpane's rows and columns. Default is false.
  - getRowConstraints
```
public final ObservableList<RowConstraints> getRowConstraints()
```
    Returns list of row constraints. Row constraints can be added to explicitly control individual row sizing and layout behavior. If not set, row sizing and layout behavior is computed based on content. Index in the ObservableList denotes the row number, so the row constraint for the first row is at the position of 0.
  - getColumnConstraints
```
public final ObservableList<ColumnConstraints> getColumnConstraints()
```
    Returns list of column constraints. Column constraints can be added to explicitly control individual column sizing and layout behavior. If not set, column sizing and layout behavior is computed based on content. Index in the ObservableList denotes the column number, so the column constraint for the first column is at the position of 0.
  - add
```
public void add(Node child,
                int columnIndex,
                int rowIndex)
```
    Adds a child to the gridpane at the specified column,row position. This convenience method will set the gridpane column and row constraints on the child.
    
    Parameters:
    
    child - the node being added to the gridpane
    
    columnIndex - the column index position for the child within the gridpane, counting from 0
    
    rowIndex - the row index position for the child within the gridpane, counting from 0
  - add
```
public void add(Node child,
                int columnIndex,
                int rowIndex,
                int colspan,
                int rowspan)
```
    Adds a child to the gridpane at the specified column,row position and spans. This convenience method will set the gridpane column, row, and span constraints on the child.
    
    Parameters:
    
    child - the node being added to the gridpane
    
    columnIndex - the column index position for the child within the gridpane, counting from 0
    
    rowIndex - the row index position for the child within the gridpane, counting from 0
    
    colspan - the number of columns the child's layout area should span
    
    rowspan - the number of rows the child's layout area should span
  - addRow
```
public void addRow(int rowIndex,
                   Node... children)
```
    Convenience method for placing the specified nodes sequentially in a given row of the gridpane. If the row already contains nodes the specified nodes will be appended to the row. For example, the first node will be positioned at [column,row], the second at [column+1,row], etc. This method will set the appropriate gridpane row/column constraints on the nodes as well as add the nodes to the gridpane's children sequence.
    
    Parameters:
    
    rowIndex - the row index position for the children within the gridpane
    
    children - the nodes to be added as a row in the gridpane
  - addColumn
```
public void addColumn(int columnIndex,
                      Node... children)
```
    Convenience method for placing the specified nodes sequentially in a given column of the gridpane. If the column already contains nodes the specified nodes will be appended to the column. For example, the first node will be positioned at [column, row], the second at [column, row+1], etc. This method will set the appropriate gridpane row/column constraints on the nodes as well as add the nodes to the gridpane's children sequence.
    
    Parameters:
    
    columnIndex - the column index position for the children within the gridpane
    
    children - the nodes to be added as a column in the gridpane
  - computeMinWidth
```
protected double computeMinWidth(double height)
```
    Description copied from class: Region
    
    Computes the minimum width of this region. Returns the sum of the left and right insets by default. region subclasses should override this method to return an appropriate value based on their content and layout strategy. If the subclass doesn't have a VERTICAL content bias, then the height parameter can be ignored.
    
    Overrides:
    
    computeMinWidth in class Region
    
    Parameters:
    
    height - the height that should be used if min width depends on it
    
    Returns:
    
    the computed minimum width of this region
  - computeMinHeight
```
protected double computeMinHeight(double width)
```
    Description copied from class: Region
    
    Computes the minimum height of this region. Returns the sum of the top and bottom insets by default. Region subclasses should override this method to return an appropriate value based on their content and layout strategy. If the subclass doesn't have a HORIZONTAL content bias, then the width parameter can be ignored.
    
    Overrides:
    
    computeMinHeight in class Region
    
    Parameters:
    
    width - the width that should be used if min height depends on it
    
    Returns:
    
    the computed minimum height for this region
  - computePrefWidth
```
protected double computePrefWidth(double height)
```
    Description copied from class: Region
    
    Computes the preferred width of this region for the given height. Region subclasses should override this method to return an appropriate value based on their content and layout strategy. If the subclass doesn't have a VERTICAL content bias, then the height parameter can be ignored.
    
    Overrides:
    
    computePrefWidth in class Region
    
    Parameters:
    
    height - the height that should be used if preferred width depends on it
    
    Returns:
    
    the computed preferred width for this region
  - computePrefHeight
```
protected double computePrefHeight(double width)
```
    Description copied from class: Region
    
    Computes the preferred height of this region for the given width; Region subclasses should override this method to return an appropriate value based on their content and layout strategy. If the subclass doesn't have a HORIZONTAL content bias, then the width parameter can be ignored.
    
    Overrides:
    
    computePrefHeight in class Region
    
    Parameters:
    
    width - the width that should be used if preferred height depends on it
    
    Returns:
    
    the computed preferred height for this region
  - getContentBias
```
public Orientation getContentBias()
```
    Description copied from class: Node
    
    Returns the orientation of a node's resizing bias for layout purposes. If the node type has no bias, returns null. If the node is resizable and it's height depends on its width, returns HORIZONTAL, else if its width depends on its height, returns VERTICAL.
    Resizable subclasses should override this method to return an appropriate value.
    
    Overrides:
    
    getContentBias in class Node
    
    Returns:
    
    null unless one of its children has a content bias.
    
    See Also:
    
    Node.isResizable(), Node.minWidth(double), Node.minHeight(double), Node.prefWidth(double), Node.prefHeight(double), Node.maxWidth(double), Node.maxHeight(double)
  - requestLayout
```
public void requestLayout()
```
    Description copied from class: Parent
    
    Requests a layout pass to be performed before the next scene is rendered. This is batched up asynchronously to happen once per "pulse", or frame of animation.
    If this parent is either a layout root or unmanaged, then it will be added directly to the scene's dirty layout list, otherwise requestParentLayout will be invoked.
    
    Overrides:
    
    requestLayout in class Parent
  - layoutChildren
```
protected void layoutChildren()
```
    Description copied from class: Parent
    
    Invoked during the layout pass to layout the children in this Parent. By default it will only set the size of managed, resizable content to their preferred sizes and does not do any node positioning.
    Subclasses should override this function to layout content as needed.
    
    Overrides:
    
    layoutChildren in class Parent
  - toString
```
public String toString()
```
    Returns a string representation of this GridPane object.
    
    Overrides:
    
    toString in class Node
    
    Returns:
    
    a string representation of this GridPane object.
  - getClassCssMetaData
```
public static List<CssMetaData<? extends Styleable,?>> getClassCssMetaData()
```
    Returns:
    
    The CssMetaData associated with this class, which may include the CssMetaData of its super classes.
    
    Since:
    
    JavaFX 8.0
  - getCssMetaData
```
public List<CssMetaData<? extends Styleable,?>> getCssMetaData()
```
    This method should delegate to Node.getClassCssMetaData() so that a Node's CssMetaData can be accessed without the need for reflection.
    
    Specified by:
    
    getCssMetaData in interface Styleable
    
    Overrides:
    
    getCssMetaData in class Region
    
    Returns:
    
    The CssMetaData associated with this node, which may include the CssMetaData of its super classes.
    
    Since:
    
    JavaFX 8.0

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Class GridPane

Grid Constraints

Row/Column Sizing

Percentage Sizing

Mixing Size Types

Resizable Range

Optional Layout Constraints

Property Summary

Properties inherited from class javafx.scene.layout.Region

Properties inherited from class javafx.scene.Parent

Properties inherited from class javafx.scene.Node

Field Summary

Fields inherited from class javafx.scene.layout.Region

Fields inherited from class javafx.scene.Node

Constructor Summary

Method Summary

Methods inherited from class javafx.scene.layout.Pane

Methods inherited from class javafx.scene.layout.Region

Methods inherited from class javafx.scene.Parent

Methods inherited from class javafx.scene.Node

Methods inherited from class java.lang.Object

Property Detail

hgap

vgap

alignment

gridLinesVisible

Field Detail

REMAINING

Constructor Detail

GridPane

Method Detail

setRowIndex

getRowIndex

setColumnIndex

getColumnIndex

setRowSpan

getRowSpan

setColumnSpan

getColumnSpan

setMargin

getMargin

setHalignment

getHalignment

setValignment

getValignment

setHgrow

getHgrow

setVgrow

getVgrow

setFillWidth

isFillWidth

setFillHeight

isFillHeight

setConstraints

setConstraints

setConstraints

setConstraints

setConstraints

clearConstraints

hgapProperty

setHgap

getHgap

vgapProperty

setVgap

getVgap

alignmentProperty

setAlignment

getAlignment

gridLinesVisibleProperty

setGridLinesVisible

isGridLinesVisible

getRowConstraints

getColumnConstraints

add

add

addRow

addColumn

computeMinWidth

computeMinHeight

computePrefWidth