Source

is

Checks if the editor in the source mode.

var is = this.app.source.is();

toggle

Toggles the source view of Article Editor.

this.app.source.toggle();

open

Shows the source of Article Editor.

this.app.source.open();

close

Hides the source of Article Editor.

this.app.source.close();

getElement

Access to the Dom of the textarea element which show the source mode.

var $source = this.app.source.getElement();
var code = $source.val();