ZK Component Reference/Layouts/Hlayout

Hlayout

• Demonstration: N/A
• Java API: Hlayout
• JavaScript API: Hlayout
• Style Guide: Hlayout

Employment/Purpose

The hlayout component is a simple horizontal oriented layout. It layouts its child components horizontally in a row.

Notice that hlayout and vlayout do not support a splitter inside. If you need it, please use Hbox and Vbox instead.

Example

<zk>
     <vlayout>
         <button label="Button 1"/>
         <button label="Button 2"/>
     </vlayout>
     <hlayout>
         <button label="Button 3"/>
         <button label="Button 4"/>
     </hlayout>
</zk>

Spacing

The default spacing between two child components is 0.3em. You are allowed to modify it if you like:

<vlayout spacing="0">
  <textbox/>
  <button label="Click Me"/>
</vlayout>

Vertical Alignment

[since 5.0.5]

By default, the vertical alignment is middle (aka., center). You can change it to top by specifying sclass="z-valign-top", and to bottom by sclass="z-valign-bottom". For example,

<vlayout>
    <hlayout>
        center: <textbox/>
    </hlayout>
    <hlayout sclass="z-valign-top">
        top: <textbox/>
    </hlayout>
    <hlayout sclass="z-valign-bottom">
        bottom: <textbox/>
    </hlayout>
</vlayout>

[since 6.0.0]

The default value of alignment has been changed to top. You can change it to middle (aka., center) by specifying valign="middle", and bottom by valign="bottom". For example,

    <hlayout id="hlOne" height="100px">
    	<button id="lbOne" label="align top" />
    	<window width="100px" height="100px" title="test window" border="normal" />
    </hlayout>
    <hlayout id="hlTwo" valign="middle" height="100px">
    	<button id="lbTwo" label="align middle" />
    	<window width="100px" height="100px" title="test window" border="normal" />
    </hlayout>
    <hlayout id="hlThree" valign="bottom" height="100px">
    	<button id="lbThree" label="align bottom" />
    	<window width="100px" height="100px" title="test window" border="normal" />
    </hlayout>

IE6 Limitation

Notice that, since the vertical alignment is specified in the CSS class (Component.setSclass(String)), there are some limitations for IE6. First, the vertical alignment is inherited to the inner hlayout. Thus, you have to specify the middle alignment explicitly in the inner hlayout if needed. For example,

<hlayout sclass="z-valign-bottom">
    bottom: <textbox/>
    <vlayout>
        <hlayout sclass="z-valign-middle">inner: <textbox/></hlayout>
    </vlayout>
</hlayout>

Supported Events

Name	Event Type
None	None

• Inherited Supported Events: HtmlBasedComponent

Supported Children

*ALL

Use Cases

Version	Description	Example Location

Version History

Version	Date	Content
5.0.4	August, 2010	new added component
5.0.5	October, 2010	Vertical alignment was supported.
6.0.0	February, 2012	The default value of alignment is change to top.