com.google.gwt.user.client.ui

Class LayoutPanel

java.lang.Object

com.google.gwt.user.client.ui.LayoutPanel

public static class LayoutPanel
extends Object

A panel that lays its children out in arbitrary layers using the Layout class.

This widget will only work in standards mode, which requires that the HTML page in which it is run have an explicit <!DOCTYPE> declaration.

Example

Use in UiBinder Templates

LayoutPanel elements in UiBinder templates lay out their children with arbitrary constraints, using <g:layer> elements. Each layer may have any of the following constraint attributes specified as CSS length attributes: left, top, right, bottom, width , and height.

Precisely zero or two constraints are required for each axis (horizontal and vertical). Specifying no constraints implies that the child should fill that axis completely.

The valid sets of horizontal constraints are:

(none)

Fill the parent's horizontal axis

left, width

Fixed width, positioned from parent's left edge

right, width

Fixed width, positioned from parent's right edge

left, right

Width implied by fixed distance from parent's left and right edges

The valid sets of vertical constraints are:

(none)

Fill the parent's vertical axis

top, height

Fixed height, positioned from parent's top edge

bottom, height

Fixed height, positioned from parent's bottom edge

top, bottom

Height implied by fixed distance from parent's top and bottom edges

The values of constraint attributes can be any valid CSS length, such as 1px, 3em, or 0 (zero lengths require no units).

For example:

 <g:LayoutPanel>
   <!-- No constraints causes the layer to fill the parent -->
   <g:layer>
     <g:Label>Lorem ipsum...</g:Label>
   </g:layer>
   <!-- Position horizontally 25% from each edge;
        Vertically 4px from the top and 10em tall. -->
   <g:layer left='25%' right='25%' top='4px' height='10em'>
     <g:Label>Header</g:Label>
   </g:layer>
 </g:LayoutPanel>
 

See Also:

Serialized Form

Method Summary

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, toString