ZK Component Reference/Layouts/Hbox

Hbox

• Demonstration: Hbox
• Java API: Hbox
• JavaScript API: Box
• Style Guide: Hbox

Employment/Purpose

The hbox component is used to layout its child components horizontally and control those children's horizontal and vertical position..

Comparing to Hlayout

Notice that hbox and vbox are designed to provide more sophisticated layout, such as splitter, alignment and packing. ZK renders these 2 components with HTML

. If you only need the layout components, we suggest using and instead, since the performance is much better (due to the use of HTML DIV instead of TABLE).

Example

<zk>
	<vbox>
		<button label="Button 1" />
		<button label="Button 2" />
	</vbox>
	<hbox>
		<button label="Button 3" />
		<button label="Button 4" />
	</hbox>
</zk>

Properties

• Inherited Properties: Box

Align and Pack

<zk xmlns:n="http://www.zkoss.org/2005/zk/native">
	<zscript><![CDATA[
		Map map = new LinkedHashMap();
		String[] packs = new String[]{"", "start", "center", "end"};
		String[] aligns = new String[]{"", "stretch", "start", "center", "end"};
		
		for (int i = 0; i < packs.length; i++) {
			String pack = packs[i];
			List list = new ArrayList();
			for (int j = 0; j < aligns.length; j++) {
				list.add(aligns[j]);
			}
			map.put(pack, list);
		}
		
	]]></zscript>
	<tablelayout columns="6">
		<tablechildren >
			<panel border="normal" height="100px" width="100px" 
				forEach='"align / pack", "", "stretch", "start", "center", "end"'>
				<panelchildren>
					<n:h3>${each}</n:h3>
				</panelchildren>	
			</panel>
		</tablechildren>
		<tablechildren forEach="${map}">
			<variables key="${each.key}"/> 
			<panel border="normal" height="100px" width="200px">
				<panelchildren>
					<n:h3>${key}</n:h3>
				</panelchildren>	
			</panel>
			<panel border="normal" height="100px" width="200px" forEach="${each.value}" >
				<panelchildren>
					<hbox pack="${key}" align="${each}" height="90%" width="100%">
						<button label="1" />
						<button label="2" />
						<button label="3" />
					</hbox>
				</panelchildren>	
			</panel>
		</tablechildren>
	</tablelayout>
</zk>

[Since 5.0.0]

Cell Component

In ZK5, we have introduced a new component named Cell which can be embedded into a Grid or Box (Hbox and Vbox) to fully control the layout and the style. You can now use the rowspan or the colspan property to layout your Grid, for example a content cell can now cross over multiple rows. The code below demonstrates how to do this:

<hbox>
    <cell sclass="years">
        ...
    </cell>
</hbox>

[Since 5.0.0]

Limitation

Box component is consisted by Table element. Therefore, when put Input element like Textbox, Combobox inside Box component, specify width and height to Box component will be ignored when browser try to render table element.

For example,

<hbox height="200px" width="200px" style="border: 1px solid red">
    <textbox hflex="1" value="1" />
    <textbox hflex="1" value="1" />
</hbox>

You will see the Box width exceed 200px. Also check the sample with pure HTML in jsfiddle.

Supported Events

Hlayout

Vlayout

Name	Event Type
None	None

• Inherited Supported Events: Box

Supported Children

*ALL

Use Cases

Version	Description	Example Location

Version History

Version	Date	Content