nsIContentPrefObserver 编辑

dom/interfaces/base/nsIContentPrefService.idlScriptable This interface allows code to easily watch for changes to the values of content preferences. 1.0 66 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);

Methods

onContentPrefRemoved()

Called when a content preference is removed.

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

Parameters

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.

onContentPrefSet()

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
);

Parameters

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.

See also

• nsIContentPrefService
• Using content preferences