Development/Tutorials/Plasma4/JavaScript/API-Extensions

From KDE TechBase
Revision as of 12:21, 24 June 2011 by Aseigo (talk | contribs) (Created page with '== Using Extensions == An API extension is a security controlled set of functions and objects that are loaded on demand. These extensions are requested by the widget by listing t...')
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Using Extensions

An API extension is a security controlled set of functions and objects that are loaded on demand. These extensions are requested by the widget by listing the required and the optional extensions (if any) it wants loaded in its metadata.desktop file. This way, even prior to the widget being loaded, Plasma can know what it will want.

Required extensions are requested using the X-Plasma-RequiredExtensions key, and optional extensions with the X-Plasma-OptionalExtensions. For example:

X-Plasma-RequiredExtensions=FileDialog,MyCustomQScriptExtension X-Plasma-OptionalExtensions=LaunchApp,HTTP

The Simplified Javascript Engine then decides if the widget will actually get that extension or not. Failure to load a required extension will result in script execution being aborted.

Available Extensions