Automatic App Refreshes

The requirements to support automatic refreshes for a custom app are identical to the requiredments for user-initiated refreshes with one exception:

The custom app class must implement the onRefresh() method just the same as for user-initiated refreshes. For this example, see Initial Render and Refresh Methods.

The HTML and CSS has no changes. See HTML and CSS Source for this example.

The underlying mashup for this example, shown in Mashup EMML, is identical.

The App Specification, however, must identify the time interval to use for automatic refreshes in the refreshinterval attribute on the <app> element. This attribute identifies the time interval as a number of seconds which must be at least 5 seconds.

See App Specification for Automatic Refreshes for an example.

App Specification for Automatic Refreshes

The properties that were updated specifically for automatic refreshes in this example are shown in bold:

<app id="refreshTest" jsclass="Sample.RefreshTest" name="refreshTest"
minimizable="false" draggable="false" height="auto" width="auto"
refreshinterval="10" >
<title>Testing Automatic Refreshes</title>
<description>Custom App to test enabling the Refresh button.</description>

<properties/>

<presto-meta name="presto.desktopCompatible" type="text">true</presto-meta>
<presto-meta name="presto.phoneCompatible" type="text">false</presto-meta>
<presto-meta name="presto.tabletCompatible" type="text">false</presto-meta>

<requires>
<require name="jquery-tmpl" type="library" version="1.0"/>
<require src="js/app.js" type="script"/>
<require src="css/app.css" type="css"/>
<require src="html/app.html" type="html"/>
</requires>
</app>