How to load System Info Service Object in WRT - A generic approach

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Article Metadata

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Compatibility

Platform(s): S60 3rd Edition

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Article

Keywords: System Information Service (SysInfo)

Created: vasant21 (January, 4th, 2010)

Last edited: hamishwillee (24 Jun 2011)

• There are some differences in WRT 1.0 and later version when we talk about using the systeminfo service object used to access a platform service. For eg: WRT 1.0 requires widgets to load the plug-in module explicitly by defining the following HTML code in their main HTML document:

<embed type="application/x-systeminfo-widget" hidden="yes"></embed>

• While WRT 1.1 and later version provides an api for creating an object instance of a service interface.

nokia.device.load(interfaceName, version)

Loading Service Object - A Generic Way

• Lets continue with the example case of systeminfo platform service

// so is declared as global variable
 
var so;
 
function load() {
 
  // Lets check if running on WRT. 
  if ( typeof window.widget === 'undefined')
    return; 
 
  // Lets try getting SysInfo as ServiceObject
  try {
 
    so = window.device.getServiceObject("Service.SysInfo", "ISysInfo");
 
  } catch (ex) {
 
    // Embed SystemInfo plugin inside HTML For WRT 1.0.
    so = document.createElement('embed');
    so.setAttribute('type', 'application/x-systeminfo-widget');
    document.body.appendChild(so);
  }
}