nsIContentPrefObserver

dom/interfaces/base/nsIContentPrefService.idlScriptable

This interface allows code to easily watch for changes to the values of content preferences.

1.0

29.0.1

Introduced

Gecko 1.9

Inherits from: nsISupports Last changed in Gecko 1.9 (Firefox 3)

Method overview

void onContentPrefRemoved(in AString aGroup, in AString aName);

void onContentPrefSet(in AString aGroup, in AString aName, in nsIVariant aValue);

Called when a content preference is removed.

void onContentPrefRemoved(
  in AString aGroup,
  in AString aName
);

aGroup: The group to which the removed preference belonged; this may be the URI of a web site. This value is null if the preference was global, applying to all web sites.
aName: The name of the preference that was removed.

Called when the value of a preference is set (either by changing its current value or by creating the preference).

void onContentPrefSet(
  in AString aGroup,
  in AString aName,
  in nsIVariant aValue
);

aGroup: The group to which the preference belongs; this may be the URI of a web site. This value is null if the preference is global, applying to all web sites.
aName: The name of the preference whose value has changed.
aValue: The preference's new value.