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/* 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/. */
"use strict";
const { actionTypes: at } = ChromeUtils.import(
);
const { getDomain } = ChromeUtils.import(
);
const { RemoteSettings } = ChromeUtils.import(
);
ChromeUtils.defineModuleGetter(
this,
"PlacesUtils",
);
ChromeUtils.defineModuleGetter(
this,
"Services",
);
ChromeUtils.defineModuleGetter(
this,
"NewTabUtils",
);
const MIN_FAVICON_SIZE = 96;
/**
* Get favicon info (uri and size) for a uri from Places.
*
* @param uri {nsIURI} Page to check for favicon data
* @returns A promise of an object (possibly null) containing the data
*/
function getFaviconInfo(uri) {
// Use 0 to get the biggest width available
const preferredWidth = 0;
return new Promise(resolve =>
PlacesUtils.favicons.getFaviconDataForPage(
uri,
// Package up the icon data in an object if we have it; otherwise null
(iconUri, faviconLength, favicon, mimeType, faviconSize) =>
resolve(iconUri ? { iconUri, faviconSize } : null),
preferredWidth
)
);
}
/**
* Fetches visit paths for a given URL from its most recent visit in Places.
*
* Note that this includes the URL itself as well as all the following
* permenent&temporary redirected URLs if any.
*
* @param {String} a URL string
*
* @returns {Array} Returns an array containing objects as
* {int} visit_id: ID of the visit in moz_historyvisits.
* {String} url: URL of the redirected URL.
*/
async function fetchVisitPaths(url) {
const query = `
WITH RECURSIVE path(visit_id)
AS (
SELECT v.id
FROM moz_places h
JOIN moz_historyvisits v
ON v.place_id = h.id
WHERE h.url_hash = hash(:url) AND h.url = :url
AND v.visit_date = h.last_visit_date
UNION
SELECT id
FROM moz_historyvisits
JOIN path
ON visit_id = from_visit
WHERE visit_type IN
(${PlacesUtils.history.TRANSITIONS.REDIRECT_PERMANENT},
${PlacesUtils.history.TRANSITIONS.REDIRECT_TEMPORARY})
)
SELECT visit_id, (
SELECT (
SELECT url
FROM moz_places
WHERE id = place_id)
FROM moz_historyvisits
WHERE id = visit_id) AS url
FROM path
`;
const visits = await NewTabUtils.activityStreamProvider.executePlacesQuery(
query,
{
columns: ["visit_id", "url"],
params: { url },
}
);
return visits;
}
/**
* Fetch favicon for a url by following its redirects in Places.
*
* This can improve the rich icon coverage for Top Sites since Places only
* associates the favicon to the final url if the original one gets redirected.
* Note this is not an urgent request, hence it is dispatched to the main
* thread idle handler to avoid any possible performance impact.
*/
async function fetchIconFromRedirects(url) {
const visitPaths = await fetchVisitPaths(url);
if (visitPaths.length > 1) {
const lastVisit = visitPaths.pop();
const redirectedUri = Services.io.newURI(lastVisit.url);
const iconInfo = await getFaviconInfo(redirectedUri);
if (iconInfo && iconInfo.faviconSize >= MIN_FAVICON_SIZE) {
PlacesUtils.favicons.setAndFetchFaviconForPage(
Services.io.newURI(url),
iconInfo.iconUri,
false,
PlacesUtils.favicons.FAVICON_LOAD_NON_PRIVATE,
null,
Services.scriptSecurityManager.getSystemPrincipal()
);
}
}
}
this.FaviconFeed = class FaviconFeed {
constructor() {
this._queryForRedirects = new Set();
}
/**
* fetchIcon attempts to fetch a rich icon for the given url from two sources.
* First, it looks up the tippy top feed, if it's still missing, then it queries
* the places for rich icon with its most recent visit in order to deal with
* the redirected visit. See Bug 1421428 for more details.
*/
async fetchIcon(url) {
// Avoid initializing and fetching icons if prefs are turned off
if (!this.shouldFetchIcons) {
return;
}
const site = await this.getSite(getDomain(url));
if (!site) {
if (!this._queryForRedirects.has(url)) {
this._queryForRedirects.add(url);
Services.tm.idleDispatchToMainThread(() => fetchIconFromRedirects(url));
}
return;
}
let iconUri = Services.io.newURI(site.image_url);
// The #tippytop is to be able to identify them for telemetry.
iconUri = iconUri
.mutate()
.setRef("tippytop")
.finalize();
PlacesUtils.favicons.setAndFetchFaviconForPage(
Services.io.newURI(url),
iconUri,
false,
PlacesUtils.favicons.FAVICON_LOAD_NON_PRIVATE,
null,
Services.scriptSecurityManager.getSystemPrincipal()
);
}
/**
* Get the site tippy top data from Remote Settings.
*/
async getSite(domain) {
const sites = await this.tippyTop.get({
filters: { domain },
syncIfEmpty: false,
});
return sites.length ? sites[0] : null;
}
/**
* Get the tippy top collection from Remote Settings.
*/
get tippyTop() {
if (!this._tippyTop) {
this._tippyTop = RemoteSettings("tippytop");
}
return this._tippyTop;
}
/**
* Determine if we should be fetching and saving icons.
*/
get shouldFetchIcons() {
return Services.prefs.getBoolPref("browser.chrome.site_icons");
}
onAction(action) {
switch (action.type) {
case at.RICH_ICON_MISSING:
this.fetchIcon(action.data.url);
break;
}
}
};
const EXPORTED_SYMBOLS = ["FaviconFeed", "fetchIconFromRedirects"];