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Scrollview

Employment/Purpose

 since 6.5

Applications exceeding a browser's viewport relies on desktop browsers to automatically generates scrollbars by using CSS overflow attribute so users can view the entire page but this feature, unfortunately, is not available on tablet or mobile browsers.

Scrollview is a container that makes its content scrollable on tablet/mobile device with a rubber band effect you see on iPhone/iPad. When you attempt to scroll past the end of the content area, the area still moves slowly with your fingers. Since there is no more content, then the area will bounce back to the correct position after your fingers leave the screen.

When end users access your application via a tablet or any mobile devices, Scrollview detects and triggers this feature. Oppositely, if the application is accessed via a desktop browser, Scrollview remains un-triggered while desktop browser will automatically generate scrollbars when needed just like before.

Example

You can scroll up/down to see other window components with the following sample ZUL. ScrollviewExample.png

<scrollview vflex="1" hflex="1">
    <zk forEach="1,2,3,4,5">
        <window title="window ${each}" border="normal" width="255px" height="200px">
        This is Window ${each}
        </window>
    </zk>
</scrollview>

Properties

Orient

The default orient of child components inside Scrollview is vertical. You can also change it to horizontal.

<scrollview vflex="1" hflex="1" orient="horizontal" />

Supported Events

Name
Event Type
onScroll
Event: ScrollEvent

In mobile devices: Denotes that the content of a scrollable component has been scrolled by the user. Notice that you can check if it is scrolled outside/inside boundaries by invoking getOutOfBound method in the ScrollEvent.

In desktop: This event will be triggered when users scroll all the way to the top or to the end of the page.

onScrolling
Event: ScrollEvent

Denotes that the user is scrolling a scrollable component.

Supported Children

*ALL

Use Cases

Version Description Example Location
     

Version History

Last Update : 2017/9/20


Version Date Content
6.5.0 August, 2012 new added component




Copyright © Potix Corporation. This article is licensed under GNU Free Documentation License.