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/* vim: set ts=2 sts=2 et sw=2: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsISupports.idl"
interface nsIURI;
interface nsILoadContext;
interface nsINetworkPredictorVerifier;
typedef unsigned long PredictorPredictReason;
typedef unsigned long PredictorLearnReason;
/**
* nsINetworkPredictor - learn about pages users visit, and allow us to take
* predictive actions upon future visits.
* NOTE: nsINetworkPredictor should only
* be used on the main thread.
*/
[scriptable, uuid(acc88e7c-3f39-42c7-ac31-6377c2c3d73e)]
interface nsINetworkPredictor : nsISupports
{
/**
* Prediction reasons
*
* PREDICT_LINK - we are being asked to take predictive action because
* the user is hovering over a link.
*
* PREDICT_LOAD - we are being asked to take predictive action because
* the user has initiated a pageload.
*
* PREDICT_STARTUP - we are being asked to take predictive action
* because the browser is starting up.
*/
const PredictorPredictReason PREDICT_LINK = 0;
const PredictorPredictReason PREDICT_LOAD = 1;
const PredictorPredictReason PREDICT_STARTUP = 2;
/**
* Start taking predictive actions
*
* Calling this will cause the predictor to (possibly) start
* taking actions such as DNS prefetch and/or TCP preconnect based on
* (1) the host name that we are given, and (2) the reason we are being
* asked to take actions.
*
* @param targetURI - The URI we are being asked to take actions based on.
* @param sourceURI - The URI that is currently loaded. This is so we can
* avoid doing predictive actions for link hover on an HTTPS page (for
* example).
* @param reason - The reason we are being asked to take actions. Can be
* any of the PREDICT_* values above.
* In the case of PREDICT_LINK, targetURI should be the URI of the link
* that is being hovered over, and sourceURI should be the URI of the page
* on which the link appears.
* In the case of PREDICT_LOAD, targetURI should be the URI of the page that
* is being loaded and sourceURI should be null.
* In the case of PREDICT_STARTUP, both targetURI and sourceURI should be
* null.
* @param loadContext - The nsILoadContext of the page load we are predicting
* about.
* @param verifier - An nsINetworkPredictorVerifier used in testing to ensure
* we're predicting the way we expect to. Not necessary (or desired) for
* normal operation.
*/
void predict(in nsIURI targetURI,
in nsIURI sourceURI,
in PredictorPredictReason reason,
in nsILoadContext loadContext,
in nsINetworkPredictorVerifier verifier);
/*
* Reasons we are learning something
*
* LEARN_LOAD_TOPLEVEL - we are learning about the toplevel resource of a
* pageload (NOTE: this should ONLY be used by tests)
*
* LEARN_LOAD_SUBRESOURCE - we are learning a subresource from a pageload
*
* LEARN_LOAD_REDIRECT - we are learning about the re-direct of a URI
*
* LEARN_STARTUP - we are learning about a page loaded during startup
*/
const PredictorLearnReason LEARN_LOAD_TOPLEVEL = 0;
const PredictorLearnReason LEARN_LOAD_SUBRESOURCE = 1;
const PredictorLearnReason LEARN_LOAD_REDIRECT = 2;
const PredictorLearnReason LEARN_STARTUP = 3;
/**
* Add to our compendium of knowledge
*
* This adds to our prediction database to make things (hopefully)
* smarter next time we predict something.
*
* @param targetURI - The URI that was loaded that we are keeping track of.
* @param sourceURI - The URI that caused targetURI to be loaded (for page
* loads). This means the DOCUMENT URI.
* @param reason - The reason we are learning this bit of knowledge.
* Reason can be any of the LEARN_* values.
* In the case of LEARN_LOAD_SUBRESOURCE, targetURI should be the URI of a
* subresource of a page, and sourceURI should be the top-level URI.
* In the case of LEARN_LOAD_REDIRECT, targetURI is the NEW URI of a
* top-level resource that was redirected to, and sourceURI is the
* ORIGINAL URI of said top-level resource.
* In the case of LEARN_STARTUP, targetURI should be the URI of a page
* that was loaded immediately after browser startup, and sourceURI should
* be null.
* @param loadContext - The nsILoadContext for the page load that we are
* learning about.
*/
void learn(in nsIURI targetURI,
in nsIURI sourceURI,
in PredictorLearnReason reason,
in nsILoadContext loadContext);
/**
* Clear out all our learned knowledge
*
* This removes everything from our database so that any predictions begun
* after this completes will start from a blank slate.
*/
void reset();
};
%{C++
// Wrapper functions to make use of the predictor easier and less invasive
class nsIChannel;
class nsIDocument;
class nsILoadContext;
class nsILoadGroup;
class nsINetworkPredictorVerifier;
namespace mozilla {
namespace net {
nsresult PredictorPredict(nsIURI *targetURI,
nsIURI *sourceURI,
PredictorPredictReason reason,
nsILoadContext *loadContext,
nsINetworkPredictorVerifier *verifier);
nsresult PredictorLearn(nsIURI *targetURI,
nsIURI *sourceURI,
PredictorLearnReason reason,
nsILoadContext *loadContext);
nsresult PredictorLearn(nsIURI *targetURI,
nsIURI *sourceURI,
PredictorLearnReason reason,
nsILoadGroup *loadGroup);
nsresult PredictorLearn(nsIURI *targetURI,
nsIURI *sourceURI,
PredictorLearnReason reason,
nsIDocument *document);
nsresult PredictorLearnRedirect(nsIURI *targetURI,
nsIChannel *channel,
nsILoadContext *loadContext);
} // mozilla::net
} // mozilla
%}
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