ej.widget.container

Class Grid

java.lang.Object

ej.mwt.Widget

ej.mwt.Container

ej.widget.container.Grid

public class Grid
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 if the grid is horizontal, or a fixed number of rows if the grid is vertical.

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

Horizontal:

Vertical:

Field Summary

Fields inherited from class ej.mwt.Widget

NO_CONSTRAINT

Constructor Summary

Constructors

Constructor and Description
Grid(boolean orientation, int count) Creates a grid specifying its orientation and the number of widgets per row/column (depending on the orientation chosen via the horizontal parameter).

Method Summary

Modifier and Type	Method and Description
void	addChild(ej.mwt.Widget child)
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	getCount() Gets the number of widgets per row/column (depending on the grid orientation).
boolean	getOrientation() Gets the orientation of this grid.
void	insertChild(ej.mwt.Widget child, int index)
protected void	layOutChildren(int contentWidth, int contentHeight)
void	removeAllChildren()
void	removeChild(ej.mwt.Widget child)
void	replaceChild(int index, ej.mwt.Widget child)
void	setCount(int count) Sets the number of widgets per row/column (depending on the grid orientation).
void	setOrientation(boolean orientation) Sets the orientation of this grid.

Methods inherited from class ej.mwt.Container

changeChildIndex, computeChildOptimalSize, getChild, getChildIndex, getChildren, getChildrenCount, getContentBounds, getContentHeight, getContentWidth, getContentX, getContentY, getWidgetAt, layOutChild, renderChild, renderContent, 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

Grid

public Grid(boolean orientation,
            int count)

Creates a grid specifying its orientation and the number of widgets per row/column (depending on the orientation chosen via the horizontal parameter).

Parameters:

orientation - the orientation of the grid (see LayoutOrientation).

count - the number of widgets per row/column to set.

Throws:

java.lang.IllegalArgumentException - if the count is negative or zero.

Method Detail

setOrientation

public void setOrientation(boolean orientation)

Sets the orientation of this grid.

Parameters:

orientation - the orientation to set (see LayoutOrientation).

getOrientation

public boolean getOrientation()

Gets the orientation of this grid.

Returns:

the orientation of this grid (see LayoutOrientation).

setCount

public void setCount(int count)

Sets the number of widgets per row/column (depending on the grid orientation).

Parameters:

count - the number of widgets per row/column to set.

Throws:

java.lang.IllegalArgumentException - if the count is negative or zero.

getCount

public int getCount()

Gets the number of widgets per row/column (depending on the grid orientation).

Returns:

the number of widgets per row/column.

getCellChild

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)

Overrides:

addChild in class ej.mwt.Container

removeChild

public void removeChild(ej.mwt.Widget child)

Overrides:

removeChild in class ej.mwt.Container

insertChild

public void insertChild(ej.mwt.Widget child,
                        int index)

Overrides:

insertChild in class ej.mwt.Container

replaceChild

public void replaceChild(int index,
                         ej.mwt.Widget child)

Overrides:

replaceChild in class ej.mwt.Container

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