let prefValue = this.pref.valueFromPreferences;
if (prefValue != null) {
this.pref._setValue(prefValue, false);
this.prefChanged();
}
this.pref.value = this.value;
this.fireEvent("onsynctopreference");
this.value = this.pref.value;
this.fireEvent("onsyncfrompreference");
this.getAttribute("type");
document.getAnonymousElementByAttribute(this, "anonid", "pref");
document.getAnonymousElementByAttribute(this, "anonid", "input");
this.pref.value = this.getAttribute(this.value ? "on" : "off");
this.fireEvent("onsynctopreference");
this.value = this.pref.value == this.getAttribute("on");
this.fireEvent("onsyncfrompreference");