GridBagLayout (Codename One API)

java.lang.Object
- com.codename1.ui.layouts.Layout
- - com.codename1.ui.layouts.GridBagLayout

```
public class GridBagLayout
extends Layout
```
Codename One port of the infamous GridBagLayout based on the Apache Harmony code. For new applications we generally recommend a "native" Codename One layout such as TableLayout and recommend avoiding this layout. Its here for developers who are accustomed to it and need to port existing code.

Field Summary

Fields
Modifier and Type	Field and Description
`double[]`	`columnWeights`
`int[]`	`columnWidths`
`protected Hashtable<Component,GridBagConstraints>`	`comptable`
`protected GridBagConstraints`	`defaultConstraints`
`protected com.codename1.ui.layouts.GridBagLayoutInfo`	`layoutInfo`
`protected static int`	`MAXGRIDSIZE`
`protected static int`	`MINSIZE`
`protected static int`	`PREFERREDSIZE`
`int[]`	`rowHeights`
`double[]`	`rowWeights`

Constructor Summary

Constructors
Constructor and Description

GridBagLayout()

Constructors
Constructor and Description
`GridBagLayout()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addLayoutComponent(Object constraints, Component comp, Container c)` Some layouts can optionally track the addition of elements with meta-data that allows the user to "hint" on object positioning.
`protected void`	`adjustForGravity(GridBagConstraints constraints, Rectangle r)`
`protected void`	`AdjustForGravity(GridBagConstraints constraints, Rectangle r)`
`protected void`	`arrangeGrid(Container parent)`
`protected void`	`ArrangeGrid(Container parent)`
`Object`	`getComponentConstraint(Component comp)` Returns the optional component constraint
`int[][]`	`getLayoutDimensions()`
`double[][]`	`getLayoutWeights()`
`Dimension`	`getPreferredSize(Container parent)` Returns the container preferred size
`void`	`invalidateLayout(Container target)`
`void`	`layoutContainer(Container parent)` Layout the given parent container children
`protected GridBagConstraints`	`lookupConstraints(Component comp)`
`void`	`removeLayoutComponent(Component comp)` Removes the component from the layout this operation is only useful if the layout maintains references to components within it
`void`	`setConstraints(Component comp, GridBagConstraints constraints)`

Methods inherited from class com.codename1.ui.layouts.Layout
cloneConstraint, equals, getChildrenInTraversalOrder, hashCode, isConstraintTracking, isOverlapSupported, obscuresPotential, overridesTabIndices, updateTabIndices

Methods inherited from class java.lang.Object
clone, getClass, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - MAXGRIDSIZE
```
protected static final int MAXGRIDSIZE
```
    See Also:
    
    Constant Field Values
  - MINSIZE
```
protected static final int MINSIZE
```
    See Also:
    
    Constant Field Values
  - PREFERREDSIZE
```
protected static final int PREFERREDSIZE
```
    See Also:
    
    Constant Field Values
  - comptable
```
protected volatile Hashtable<Component,GridBagConstraints> comptable
```
  - defaultConstraints
```
protected volatile GridBagConstraints defaultConstraints
```
  - layoutInfo
```
protected volatile com.codename1.ui.layouts.GridBagLayoutInfo layoutInfo
```
  - columnWeights
```
public volatile double[] columnWeights
```
  - rowWeights
```
public volatile double[] rowWeights
```
  - columnWidths
```
public volatile int[] columnWidths
```
  - rowHeights
```
public volatile int[] rowHeights
```
- Constructor Detail
  - GridBagLayout
```
public GridBagLayout()
```
- Method Detail
  - addLayoutComponent
```
public void addLayoutComponent(Object constraints,
                               Component comp,
                               Container c)
```
    Description copied from class: Layout
    
    Some layouts can optionally track the addition of elements with meta-data that allows the user to "hint" on object positioning.
    
    Overrides:
    
    addLayoutComponent in class Layout
    
    Parameters:
    
    constraints - optional meta data information, like alignment orientation
    
    comp - the added component to the layout
    
    c - the parent container
  - removeLayoutComponent
```
public void removeLayoutComponent(Component comp)
```
    Description copied from class: Layout
    
    Removes the component from the layout this operation is only useful if the layout maintains references to components within it
    
    Overrides:
    
    removeLayoutComponent in class Layout
    
    Parameters:
    
    comp - the removed component from layout
  - getComponentConstraint
```
public Object getComponentConstraint(Component comp)
```
    Description copied from class: Layout
    
    Returns the optional component constraint
    
    Overrides:
    
    getComponentConstraint in class Layout
    
    Parameters:
    
    comp - the component whose constraint should be returned
    
    Returns:
    
    the optional component constraint
  - setConstraints
```
public void setConstraints(Component comp,
                           GridBagConstraints constraints)
```
  - invalidateLayout
```
public void invalidateLayout(Container target)
```
  - getPreferredSize
```
public Dimension getPreferredSize(Container parent)
```
    Description copied from class: Layout
    
    Returns the container preferred size
    
    Specified by:
    
    getPreferredSize in class Layout
    
    Parameters:
    
    parent - the parent container
    
    Returns:
    
    the container preferred size
  - layoutContainer
```
public void layoutContainer(Container parent)
```
    Description copied from class: Layout
    
    Layout the given parent container children
    
    Specified by:
    
    layoutContainer in class Layout
    
    Parameters:
    
    parent - the given parent container
  - getLayoutDimensions
```
public int[][] getLayoutDimensions()
```
  - getLayoutWeights
```
public double[][] getLayoutWeights()
```
  - ArrangeGrid
```
protected void ArrangeGrid(Container parent)
```
  - lookupConstraints
```
protected GridBagConstraints lookupConstraints(Component comp)
```
  - adjustForGravity
```
protected void adjustForGravity(GridBagConstraints constraints,
                                Rectangle r)
```
  - arrangeGrid
```
protected void arrangeGrid(Container parent)
```
  - AdjustForGravity
```
protected void AdjustForGravity(GridBagConstraints constraints,
                                Rectangle r)
```

Class GridBagLayout

Field Summary

Constructor Summary

Method Summary

Methods inherited from class com.codename1.ui.layouts.Layout

Methods inherited from class java.lang.Object

Field Detail

MAXGRIDSIZE

MINSIZE

PREFERREDSIZE

comptable

defaultConstraints

layoutInfo

columnWeights

rowWeights

columnWidths

rowHeights

Constructor Detail

GridBagLayout

Method Detail

addLayoutComponent

removeLayoutComponent

getComponentConstraint

setConstraints

invalidateLayout

getPreferredSize

layoutContainer

getLayoutDimensions

getLayoutWeights

ArrangeGrid

lookupConstraints

adjustForGravity

arrangeGrid

AdjustForGravity