The nsIWebNavigationInfo interface exposes a way to get information
on the capabilities of Gecko webnavigation objects.
Query whether aType is supported.
| aType | the MIME type in question. |
| aWebNav | the nsIWebNavigation object for which the request is being made. This is allowed to be null. If it is non-null, the return value of this method may depend on the exact state of aWebNav and the values set through nsIWebBrowserSetup; otherwise the method will assume that the caller is interested in information about nsIWebNavigation objects in their default state. |
| an enum value indicating whether and how aType is supported. @note This method may rescan plugins to ensure that they're properly registered for the types they support. |
Returned by isTypeSupported to indicate lack of support for a type.
@note this is guaranteed not to change, so that boolean tests can be done
on the return value if isTypeSupported to detect whether a type is
supported at all.
Returned by isTypeSupported to indicate that a type is supported as an
image.
Returned by isTypeSupported to indicate that a type is supported via an
NPAPI (“Netscape 4 API”) plug-in. This is not the value returned for
“XPCOM plug-ins”.
@note Other return types may be added here in the future as they become
relevant.
Returned by isTypeSupported to indicate that a type is supported via some
other means.