# Class Grid

java.lang.Object
com.codename1.ui.layouts.mig.Grid

public final class Grid extends Object
Holds components in a grid. Does most of the logic behind the layout manager.

- ## Field Summary

  Fields
  Modifier and Type
  Field
  Description
  `static final boolean`
  `TEST_GAPS`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `Grid(ContainerWrapper container, LC lc, AC rowConstr, AC colConstr, Map<? extends ComponentWrapper, CC> ccMap, ArrayList<LayoutCallback> callbackList)`
  Constructor.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `ContainerWrapper`
  `getContainer()`
  `int[]`
  `getHeight()`
  `int[]`
  `getHeight(int refWidth)`
  `int[]`
  `getWidth()`
  `int[]`
  `getWidth(int refHeight)`
  `void`
  `invalidateContainerSize()`
  If the container (parent) that this grid is laying out has changed its bounds, call this method to clear any cached values min/pref/max sizes of the components and rows/columns.
  `boolean`
  `layout(int[] bounds, UnitValue alignX, UnitValue alignY, boolean debug)`
  Does the actual layout.
  `boolean`
  `layout(int[] bounds, UnitValue alignX, UnitValue alignY, boolean debug, boolean notUsed)`

  ###### Deprecated

  `void`
  `paintDebug()`

  ### Methods inherited from class Object

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

- ## Field Details

  - ### TEST_GAPS

    public static final boolean TEST_GAPS
    See Also:
      - Constant Field Values

- ## Constructor Details

  - ### Grid

    public Grid(ContainerWrapper container, LC lc, AC rowConstr, AC colConstr, Map<? extends ComponentWrapper, CC> ccMap, ArrayList<LayoutCallback> callbackList)

    Constructor.

    ###### Parameters

    - `container`: The container that will be laid out.

    - `lc`: The form flow constraints.

    - `rowConstr`: @param rowConstr The rows specifications. If more cell rows are required, the last element will be used for when there is no corresponding element in this array.

    - `colConstr`: @param colConstr The columns specifications. If more cell rows are required, the last element will be used for when there is no corresponding element in this array.

    - `ccMap`: @param ccMap The map containing the parsed constraints for each child component of `parent`. Will not be altered. Can have null CC which will use a common cached one.

    - `callbackList`: @param callbackList A list of callbacks or `null` if none. Will not be altered.

- ## Method Details

  - ### invalidateContainerSize

    public void invalidateContainerSize()

    If the container (parent) that this grid is laying out has changed its bounds, call this method to clear any cached values min/pref/max sizes of the components and rows/columns.

    If any component can have changed cell the grid needs to be recreated.

  - ### layout

    public boolean layout(int[] bounds, UnitValue alignX, UnitValue alignY, boolean debug, boolean notUsed)

    ###### Deprecated

  - ### layout

    public boolean layout(int[] bounds, UnitValue alignX, UnitValue alignY, boolean debug)

    Does the actual layout. Uses many values calculated in the constructor.

    ###### Parameters

    - `bounds`: @param bounds The bounds to layout against. Normally that of the parent. [x, y, width, height].

    - `alignX`: The alignment for the x-axis. Can be null.

    - `alignY`: The alignment for the y-axis. Can be null.

    - `debug`: If debug information should be saved in `#debugRects`.

    ###### Returns

    Returns:
      If the layout has changed the preferred size and there is need for a new layout. This can happen if one or more components in the grid has a content bias according to `net.miginfocom.layout.ComponentWrapper#getContentBias()`.

  - ### paintDebug

    public void paintDebug()

  - ### getContainer

    public ContainerWrapper getContainer()

  - ### getWidth

    public int[] getWidth()

  - ### getWidth

    public int[] getWidth(int refHeight)

  - ### getHeight

    public int[] getHeight()

  - ### getHeight

    public int[] getHeight(int refWidth)