gecko-dev/docshell/base/nsIChannelClassifier.idl

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#include "nsISupports.idl"
interface nsIChannel;
/**
* An nsIChannelClassifier object checks a channel's URI against the
* URI classifier service, and cancels the channel before OnStartRequest
* if it is found on a blacklist.
*/
[scriptable, uuid(1481c5b5-9f6e-4995-8fe3-2aad5c06440d)]
interface nsIChannelClassifier : nsISupports
{
/**
* Checks a channel against the URI classifier service (if it exists).
*
* The channel will be suspended while the classifier is checked. The
* channel may be cancelled with an error code determined by the classifier
* before it is resumed.
*
* If there is no URI classifier service, NS_ERROR_FACTORY_NOT_REGISTERED
* will be returned.
*
* This method must be called immediately after AsyncOpen() has been called
* on the channel.
*
* @param aChannel
* The channel to suspend.
* @param aInstallListener
* If true, the classifier will install notification
* callbacks to listen for redirects. The classifier will
* pass all notifications on to the channel's existing
* notification callbacks.
*/
void start(in nsIChannel aChannel, in boolean aInstallListener);
/**
* Notify the classifier that the channel was redirected. The new channel
* will be suspended pending a new classifier lookup.
*
* @param aOldChannel
* The channel that's being redirected.
* @param aNewChannel
* The new channel. This channel is not opened yet.
*/
void onRedirect(in nsIChannel aOldChannel, in nsIChannel aNewChannel);
/**
* Cancel an existing query. If a channel has been suspended, it will
* be resumed.
*/
void cancel();
};