ej.widget.container

Class FixedGrid

java.lang.Object

ej.mwt.Widget

ej.mwt.Container

ej.widget.container.FixedGrid

public class FixedGrid
extends ej.mwt.Container

Lays out any number of children in a grid.

All the children are laid out in a grid, which has a fixed number of columns and rows.

In a grid, all children have the same width and the same height, regardless of their optimal size.

Field Summary

Fields inherited from class ej.mwt.Widget

NO_CONSTRAINT

Constructor Summary

Constructors

Constructor and Description
FixedGrid(int columns, int rows) Creates a grid specifying its number of columns and rows.

Method Summary

Modifier and Type	Method and Description
void	addChild(ej.mwt.Widget child, int column, int row) Adds a widget at the specified column and row.
protected void	computeContentOptimalSize(ej.mwt.util.Size size)
ej.mwt.Widget	getCellChild(int column, int row) Gets the widget at the specified column and row.
int	getColumns() Gets the number of columns.
int	getRows() Gets the number of rows.
protected void	layOutChildren(int contentWidth, int contentHeight)
void	removeAllChildren()
void	removeChild(int column, int row) Removes the widget at the specified column and row.

Methods inherited from class ej.mwt.Container

addChild, changeChildIndex, computeChildOptimalSize, getChild, getChildIndex, getChildren, getChildrenCount, getContentBounds, getContentHeight, getContentWidth, getContentX, getContentY, getWidgetAt, insertChild, layOutChild, removeChild, renderChild, renderContent, replaceChild, setHiddenChild, setHiddenChildren, setShownChild, setShownChildren, updateStyle

Methods inherited from class ej.mwt.Widget

addClassSelector, contains, containsWidget, getAbsoluteX, getAbsoluteY, getDesktop, getHeight, getParent, getStyle, getWidth, getX, getY, handleEvent, hasClassSelector, isAttached, isEnabled, isInState, isShown, isTransparent, onAttached, onDetached, onHidden, onLaidOut, onShown, removeAllClassSelectors, removeClassSelector, render, requestLayOut, requestRender, requestRender, setClassSelectors, setEnabled, setPosition, setStyle

Methods inherited from class java.lang.Object

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

Constructor Detail

FixedGrid

public FixedGrid(int columns,
                 int rows)

Creates a grid specifying its number of columns and rows.

Parameters:

columns - the number of columns

rows - the number of rows

Throws:

java.lang.IllegalArgumentException - if one of the parameters is negative or zero

Method Detail

getColumns

public int getColumns()

Gets the number of columns.

Returns:

the number of columns.

getRows

public int getRows()

Gets the number of rows.

Returns:

the number of rows.

getCellChild

@Nullable
public ej.mwt.Widget getCellChild(int column,
                                             int row)

Gets the widget at the specified column and row.

Parameters:

column - the column of the widget to return

row - the row of the widget to return

Returns:

the widget at the specified column and row

Throws:

java.lang.IndexOutOfBoundsException - if the cell referenced by the given coordinates is out of range

addChild

public void addChild(ej.mwt.Widget child,
                     int column,
                     int row)

Adds a widget at the specified column and row.

Parameters:

child - the child to add

column - the column of the widget

row - the row of the widget

Throws:

java.lang.IndexOutOfBoundsException - if the cell referenced by the given coordinates is out of range

removeChild

public void removeChild(int column,
                        int row)

Removes the widget at the specified column and row.

Parameters:

column - the column of the widget

row - the row of the widget

Throws:

java.lang.IndexOutOfBoundsException - if the cell referenced by the given coordinates is out of range

removeAllChildren

public void removeAllChildren()

Overrides:

removeAllChildren in class ej.mwt.Container

computeContentOptimalSize

protected void computeContentOptimalSize(ej.mwt.util.Size size)

Specified by:

computeContentOptimalSize in class ej.mwt.Widget

layOutChildren

protected void layOutChildren(int contentWidth,
                              int contentHeight)

Specified by:

layOutChildren in class ej.mwt.Container