gecko-dev/toolkit/components/places/UnifiedComplete.jsm
2019-04-17 17:06:01 +00:00

2770 lines
98 KiB
JavaScript

/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
* vim: sw=2 ts=2 sts=2 expandtab
* 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/. */
/* eslint complexity: ["error", 50] */
"use strict";
// Constants
const MS_PER_DAY = 86400000; // 24 * 60 * 60 * 1000
// AutoComplete query type constants.
// Describes the various types of queries that we can process rows for.
const QUERYTYPE_FILTERED = 0;
const QUERYTYPE_AUTOFILL_ORIGIN = 1;
const QUERYTYPE_AUTOFILL_URL = 2;
const QUERYTYPE_ADAPTIVE = 3;
// This separator is used as an RTL-friendly way to split the title and tags.
// It can also be used by an nsIAutoCompleteResult consumer to re-split the
// "comment" back into the title and the tag.
const TITLE_TAGS_SEPARATOR = " \u2013 ";
// Telemetry probes.
const TELEMETRY_1ST_RESULT = "PLACES_AUTOCOMPLETE_1ST_RESULT_TIME_MS";
const TELEMETRY_6_FIRST_RESULTS = "PLACES_AUTOCOMPLETE_6_FIRST_RESULTS_TIME_MS";
// The default frecency value used when inserting matches with unknown frecency.
const FRECENCY_DEFAULT = 1000;
// After this time, we'll give up waiting for the extension to return matches.
const MAXIMUM_ALLOWED_EXTENSION_TIME_MS = 3000;
// By default we add remote tabs that have been used less than this time ago.
// Any remaining remote tabs are added in queue if no other results are found.
const RECENT_REMOTE_TAB_THRESHOLD_MS = 259200000; // 72 hours.
// Regex used to match userContextId.
const REGEXP_USER_CONTEXT_ID = /(?:^| )user-context-id:(\d+)/;
// Regex used to match maxResults.
const REGEXP_MAX_RESULTS = /(?:^| )max-results:(\d+)/;
// Regex used to match insertMethod.
const REGEXP_INSERT_METHOD = /(?:^| )insert-method:(\d+)/;
// Regex used to match one or more whitespace.
const REGEXP_SPACES = /\s+/;
// Regex used to strip prefixes from URLs. See stripPrefix().
const REGEXP_STRIP_PREFIX = /^[a-z]+:(?:\/){0,2}/i;
// The result is notified on a delay, to avoid rebuilding the panel at every match.
const NOTIFYRESULT_DELAY_MS = 16;
// Sqlite result row index constants.
const QUERYINDEX_QUERYTYPE = 0;
const QUERYINDEX_URL = 1;
const QUERYINDEX_TITLE = 2;
const QUERYINDEX_BOOKMARKED = 3;
const QUERYINDEX_BOOKMARKTITLE = 4;
const QUERYINDEX_TAGS = 5;
// QUERYINDEX_VISITCOUNT = 6;
// QUERYINDEX_TYPED = 7;
const QUERYINDEX_PLACEID = 8;
const QUERYINDEX_SWITCHTAB = 9;
const QUERYINDEX_FRECENCY = 10;
// If a URL starts with one of these prefixes, then we don't provide search
// suggestions for it.
const DISALLOWED_URLLIKE_PREFIXES = [
"http", "https", "ftp",
];
// This SQL query fragment provides the following:
// - whether the entry is bookmarked (QUERYINDEX_BOOKMARKED)
// - the bookmark title, if it is a bookmark (QUERYINDEX_BOOKMARKTITLE)
// - the tags associated with a bookmarked entry (QUERYINDEX_TAGS)
const SQL_BOOKMARK_TAGS_FRAGMENT =
`EXISTS(SELECT 1 FROM moz_bookmarks WHERE fk = h.id) AS bookmarked,
( SELECT title FROM moz_bookmarks WHERE fk = h.id AND title NOTNULL
ORDER BY lastModified DESC LIMIT 1
) AS btitle,
( SELECT GROUP_CONCAT(t.title, ', ')
FROM moz_bookmarks b
JOIN moz_bookmarks t ON t.id = +b.parent AND t.parent = :parent
WHERE b.fk = h.id
) AS tags`;
// TODO bug 412736: in case of a frecency tie, we might break it with h.typed
// and h.visit_count. That is slower though, so not doing it yet...
// NB: as a slight performance optimization, we only evaluate the "bookmarked"
// condition once, and avoid evaluating "btitle" and "tags" when it is false.
function defaultQuery(conditions = "") {
let query =
`SELECT :query_type, h.url, h.title, ${SQL_BOOKMARK_TAGS_FRAGMENT},
h.visit_count, h.typed, h.id, t.open_count, h.frecency
FROM moz_places h
LEFT JOIN moz_openpages_temp t
ON t.url = h.url
AND t.userContextId = :userContextId
WHERE h.frecency <> 0
AND CASE WHEN bookmarked
THEN
AUTOCOMPLETE_MATCH(:searchString, h.url,
IFNULL(btitle, h.title), tags,
h.visit_count, h.typed,
1, t.open_count,
:matchBehavior, :searchBehavior)
ELSE
AUTOCOMPLETE_MATCH(:searchString, h.url,
h.title, '',
h.visit_count, h.typed,
0, t.open_count,
:matchBehavior, :searchBehavior)
END
${conditions}
ORDER BY h.frecency DESC, h.id DESC
LIMIT :maxResults`;
return query;
}
const SQL_SWITCHTAB_QUERY =
`SELECT :query_type, t.url, t.url, NULL, NULL, NULL, NULL, NULL, NULL,
t.open_count, NULL
FROM moz_openpages_temp t
LEFT JOIN moz_places h ON h.url_hash = hash(t.url) AND h.url = t.url
WHERE h.id IS NULL
AND t.userContextId = :userContextId
AND AUTOCOMPLETE_MATCH(:searchString, t.url, t.url, NULL,
NULL, NULL, NULL, t.open_count,
:matchBehavior, :searchBehavior)
ORDER BY t.ROWID DESC
LIMIT :maxResults`;
const SQL_ADAPTIVE_QUERY =
`/* do not warn (bug 487789) */
SELECT :query_type, h.url, h.title, ${SQL_BOOKMARK_TAGS_FRAGMENT},
h.visit_count, h.typed, h.id, t.open_count, h.frecency
FROM (
SELECT ROUND(MAX(use_count) * (1 + (input = :search_string)), 1) AS rank,
place_id
FROM moz_inputhistory
WHERE input BETWEEN :search_string AND :search_string || X'FFFF'
GROUP BY place_id
) AS i
JOIN moz_places h ON h.id = i.place_id
LEFT JOIN moz_openpages_temp t
ON t.url = h.url
AND t.userContextId = :userContextId
WHERE AUTOCOMPLETE_MATCH(NULL, h.url,
IFNULL(btitle, h.title), tags,
h.visit_count, h.typed, bookmarked,
t.open_count,
:matchBehavior, :searchBehavior)
ORDER BY rank DESC, h.frecency DESC
LIMIT :maxResults`;
// Result row indexes for originQuery()
const QUERYINDEX_ORIGIN_AUTOFILLED_VALUE = 1;
const QUERYINDEX_ORIGIN_URL = 2;
const QUERYINDEX_ORIGIN_FRECENCY = 3;
// `WITH` clause for the autofill queries. autofill_frecency_threshold.value is
// the mean of all moz_origins.frecency values + stddevMultiplier * one standard
// deviation. This is inlined directly in the SQL (as opposed to being a custom
// Sqlite function for example) in order to be as efficient as possible.
const SQL_AUTOFILL_WITH = `
WITH
frecency_stats(count, sum, squares) AS (
SELECT
CAST((SELECT IFNULL(value, 0.0) FROM moz_meta WHERE key = "origin_frecency_count") AS REAL),
CAST((SELECT IFNULL(value, 0.0) FROM moz_meta WHERE key = "origin_frecency_sum") AS REAL),
CAST((SELECT IFNULL(value, 0.0) FROM moz_meta WHERE key = "origin_frecency_sum_of_squares") AS REAL)
),
autofill_frecency_threshold(value) AS (
SELECT
CASE count
WHEN 0 THEN 0.0
WHEN 1 THEN sum
ELSE (sum / count) + (:stddevMultiplier * sqrt((squares - ((sum * sum) / count)) / count))
END
FROM frecency_stats
)
`;
const SQL_AUTOFILL_FRECENCY_THRESHOLD = `(
SELECT value FROM autofill_frecency_threshold
)`;
function originQuery(conditions = "", bookmarkedFragment = "NULL") {
return `${SQL_AUTOFILL_WITH}
SELECT :query_type,
fixed_up_host || '/',
IFNULL(:prefix, prefix) || moz_origins.host || '/',
frecency,
bookmarked,
id
FROM (
SELECT host,
host AS fixed_up_host,
TOTAL(frecency) AS host_frecency,
(
SELECT TOTAL(foreign_count) > 0
FROM moz_places
WHERE moz_places.origin_id = moz_origins.id
) AS bookmarked
FROM moz_origins
WHERE host BETWEEN :searchString AND :searchString || X'FFFF'
${conditions}
GROUP BY host
HAVING host_frecency >= ${SQL_AUTOFILL_FRECENCY_THRESHOLD}
OR bookmarked
UNION ALL
SELECT host,
fixup_url(host) AS fixed_up_host,
TOTAL(frecency) AS host_frecency,
(
SELECT TOTAL(foreign_count) > 0
FROM moz_places
WHERE moz_places.origin_id = moz_origins.id
) AS bookmarked
FROM moz_origins
WHERE host BETWEEN 'www.' || :searchString AND 'www.' || :searchString || X'FFFF'
${conditions}
GROUP BY host
HAVING host_frecency >= ${SQL_AUTOFILL_FRECENCY_THRESHOLD}
OR bookmarked
) AS grouped_hosts
JOIN moz_origins ON moz_origins.host = grouped_hosts.host
ORDER BY frecency DESC, id DESC
LIMIT 1 `;
}
const SQL_ORIGIN_QUERY = originQuery();
const SQL_ORIGIN_PREFIX_QUERY = originQuery(
`AND prefix BETWEEN :prefix AND :prefix || X'FFFF'`
);
const SQL_ORIGIN_BOOKMARKED_QUERY = originQuery(
`AND bookmarked`
);
const SQL_ORIGIN_PREFIX_BOOKMARKED_QUERY = originQuery(
`AND bookmarked
AND prefix BETWEEN :prefix AND :prefix || X'FFFF'`,
);
// Result row indexes for urlQuery()
const QUERYINDEX_URL_URL = 1;
const QUERYINDEX_URL_STRIPPED_URL = 2;
const QUERYINDEX_URL_FRECENCY = 3;
function urlQuery(conditions1, conditions2) {
// We limit the search to places that are either bookmarked or have a frecency
// over some small, arbitrary threshold (20) in order to avoid scanning as few
// rows as possible. Keep in mind that we run this query every time the user
// types a key when the urlbar value looks like a URL with a path.
return `/* do not warn (bug no): cannot use an index to sort */
SELECT :query_type,
url,
:strippedURL,
frecency,
foreign_count > 0 AS bookmarked,
id
FROM moz_places
WHERE rev_host = :revHost
AND (bookmarked OR frecency > 20)
${conditions1}
UNION ALL
SELECT :query_type,
url,
:strippedURL,
frecency,
foreign_count > 0 AS bookmarked,
id
FROM moz_places
WHERE rev_host = :revHost || 'www.'
AND (bookmarked OR frecency > 20)
${conditions2}
ORDER BY frecency DESC, id DESC
LIMIT 1 `;
}
const SQL_URL_QUERY = urlQuery(
`AND strip_prefix_and_userinfo(url) BETWEEN :strippedURL AND :strippedURL || X'FFFF'`,
`AND strip_prefix_and_userinfo(url) BETWEEN 'www.' || :strippedURL AND 'www.' || :strippedURL || X'FFFF'`
);
const SQL_URL_PREFIX_QUERY = urlQuery(
`AND url BETWEEN :prefix || :strippedURL AND :prefix || :strippedURL || X'FFFF'`,
`AND url BETWEEN :prefix || 'www.' || :strippedURL AND :prefix || 'www.' || :strippedURL || X'FFFF'`
);
const SQL_URL_BOOKMARKED_QUERY = urlQuery(
`AND bookmarked
AND strip_prefix_and_userinfo(url) BETWEEN :strippedURL AND :strippedURL || X'FFFF'`,
`AND bookmarked
AND strip_prefix_and_userinfo(url) BETWEEN 'www.' || :strippedURL AND 'www.' || :strippedURL || X'FFFF'`
);
const SQL_URL_PREFIX_BOOKMARKED_QUERY = urlQuery(
`AND bookmarked
AND url BETWEEN :prefix || :strippedURL AND :prefix || :strippedURL || X'FFFF'`,
`AND bookmarked
AND url BETWEEN :prefix || 'www.' || :strippedURL AND :prefix || 'www.' || :strippedURL || X'FFFF'`
);
// Getters
const {XPCOMUtils} = ChromeUtils.import("resource://gre/modules/XPCOMUtils.jsm");
const {Services} = ChromeUtils.import("resource://gre/modules/Services.jsm");
XPCOMUtils.defineLazyGlobalGetters(this, ["fetch"]);
XPCOMUtils.defineLazyModuleGetters(this, {
AboutPagesUtils: "resource://gre/modules/AboutPagesUtils.jsm",
BrowserUtils: "resource://gre/modules/BrowserUtils.jsm",
ExtensionSearchHandler: "resource://gre/modules/ExtensionSearchHandler.jsm",
ObjectUtils: "resource://gre/modules/ObjectUtils.jsm",
PlacesRemoteTabsAutocompleteProvider: "resource://gre/modules/PlacesRemoteTabsAutocompleteProvider.jsm",
PlacesSearchAutocompleteProvider: "resource://gre/modules/PlacesSearchAutocompleteProvider.jsm",
PlacesUtils: "resource://gre/modules/PlacesUtils.jsm",
ProfileAge: "resource://gre/modules/ProfileAge.jsm",
Sqlite: "resource://gre/modules/Sqlite.jsm",
UrlbarPrefs: "resource:///modules/UrlbarPrefs.jsm",
UrlbarProviderOpenTabs: "resource:///modules/UrlbarProviderOpenTabs.jsm",
UrlbarProvidersManager: "resource:///modules/UrlbarProvidersManager.jsm",
UrlbarTokenizer: "resource:///modules/UrlbarTokenizer.jsm",
UrlbarUtils: "resource:///modules/UrlbarUtils.jsm",
});
XPCOMUtils.defineLazyPreferenceGetter(this, "syncUsernamePref",
"services.sync.username");
function setTimeout(callback, ms) {
let timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
timer.initWithCallback(callback, ms, timer.TYPE_ONE_SHOT);
return timer;
}
const kProtocolsWithIcons = ["chrome:", "moz-extension:", "about:", "http:", "https:", "ftp:"];
function iconHelper(url) {
if (typeof url == "string") {
return kProtocolsWithIcons.some(p => url.startsWith(p)) ?
"page-icon:" + url : PlacesUtils.favicons.defaultFavicon.spec;
}
if (url && url instanceof URL && kProtocolsWithIcons.includes(url.protocol)) {
return "page-icon:" + url.href;
}
return PlacesUtils.favicons.defaultFavicon.spec;
}
// Preloaded Sites related
function PreloadedSite(url, title) {
this.uri = Services.io.newURI(url);
this.title = title;
this._matchTitle = title.toLowerCase();
this._hasWWW = this.uri.host.startsWith("www.");
this._hostWithoutWWW = this._hasWWW ? this.uri.host.slice(4)
: this.uri.host;
}
/**
* Storage object for Preloaded Sites.
* add(url, title): adds a site to storage
* populate(sites) : populates the storage with array of [url,title]
* sites[]: resulting array of sites (PreloadedSite objects)
*/
XPCOMUtils.defineLazyGetter(this, "PreloadedSiteStorage", () => Object.seal({
sites: [],
add(url, title) {
let site = new PreloadedSite(url, title);
this.sites.push(site);
},
populate(sites) {
this.sites = [];
for (let site of sites) {
this.add(site[0], site[1]);
}
},
}));
XPCOMUtils.defineLazyGetter(this, "ProfileAgeCreatedPromise", async () => {
let times = await ProfileAge();
return times.created;
});
// Maps restriction character types to textual behaviors.
XPCOMUtils.defineLazyGetter(this, "typeToBehaviorMap", () => {
return new Map([
[UrlbarTokenizer.TYPE.RESTRICT_HISTORY, "history"],
[UrlbarTokenizer.TYPE.RESTRICT_BOOKMARK, "bookmark"],
[UrlbarTokenizer.TYPE.RESTRICT_TAG, "tag"],
[UrlbarTokenizer.TYPE.RESTRICT_OPENPAGE, "openpage"],
[UrlbarTokenizer.TYPE.RESTRICT_SEARCH, "search"],
[UrlbarTokenizer.TYPE.RESTRICT_TITLE, "title"],
[UrlbarTokenizer.TYPE.RESTRICT_URL, "url"],
]);
});
// Helper functions
/**
* Strips the prefix from a URL and returns the prefix and the remainder of the
* URL. "Prefix" is defined to be the scheme and colon, plus, if present, two
* slashes. If the given string is not actually a URL, then an empty prefix and
* the string itself is returned.
*
* @param str
* The possible URL to strip.
* @return If `str` is a URL, then [prefix, remainder]. Otherwise, ["", str].
*/
function stripPrefix(str) {
let match = REGEXP_STRIP_PREFIX.exec(str);
if (!match) {
return ["", str];
}
let prefix = match[0];
if (prefix.length < str.length && str[prefix.length] == " ") {
return ["", str];
}
return [prefix, str.substr(prefix.length)];
}
/**
* Strip http and trailing separators from a spec.
*
* @param spec
* The text to modify.
* @param trimSlash
* Whether to trim the trailing slash.
* @return the modified spec.
*/
function stripHttpAndTrim(spec, trimSlash = true) {
if (spec.startsWith("http://")) {
spec = spec.slice(7);
}
if (spec.endsWith("?")) {
spec = spec.slice(0, -1);
}
if (trimSlash && spec.endsWith("/")) {
spec = spec.slice(0, -1);
}
return spec;
}
/**
* Returns the key to be used for a match in a map for the purposes of removing
* duplicate entries - any 2 matches that should be considered the same should
* return the same key. The type of the returned key depends on the type of the
* match, so don't assume you can compare keys using ==. Instead, use
* ObjectUtils.deepEqual().
*
* @param {object} match
* The match object.
* @returns {value} Some opaque key object. Use ObjectUtils.deepEqual() to
* compare keys.
*/
function makeKeyForMatch(match) {
// For autofill entries, we need to have a key based on the comment rather
// than the value field, because the latter may have been trimmed.
if (match.hasOwnProperty("style") && match.style.includes("autofill")) {
return [stripHttpAndTrim(match.comment), null];
}
let action = PlacesUtils.parseActionUrl(match.value);
if (!action) {
return [stripHttpAndTrim(match.value), null];
}
let key;
switch (action.type) {
case "searchengine":
// We want to exclude search suggestion matches that simply echo back the
// query string in the heuristic result. For example, if the user types
// "@engine test", we want to exclude a "test" suggestion match.
key = [
action.type,
action.params.engineName,
(action.params.searchSuggestion || action.params.searchQuery)
.toLocaleLowerCase(),
];
break;
default:
key = stripHttpAndTrim(action.params.url || match.value);
break;
}
return [key, action];
}
/**
* Returns whether the passed in string looks like a url.
*/
function looksLikeUrl(str, ignoreAlphanumericHosts = false) {
// Single word including special chars.
return !REGEXP_SPACES.test(str) &&
(["/", "@", ":", "["].some(c => str.includes(c)) ||
(ignoreAlphanumericHosts ?
/^([\[\]A-Z0-9.:-]+[\.:]){3,}[\[\]A-Z0-9.:-]+$/i.test(str) :
str.includes(".")));
}
/**
* Returns the portion of a string starting at the index where another string
* begins.
*
* @param {string} sourceStr
* The string to search within.
* @param {string} targetStr
* The string to search for.
* @returns {string} The substring within sourceStr starting at targetStr, or
* the empty string if targetStr does not occur in sourceStr.
*/
function substringAt(sourceStr, targetStr) {
let index = sourceStr.indexOf(targetStr);
return index < 0 ? "" : sourceStr.substr(index);
}
/**
* Returns the portion of a string starting at the index where another string
* ends.
*
* @param {string} sourceStr
* The string to search within.
* @param {string} targetStr
* The string to search for.
* @returns {string} The substring within sourceStr where targetStr ends, or the
* empty string if targetStr does not occur in sourceStr.
*/
function substringAfter(sourceStr, targetStr) {
let index = sourceStr.indexOf(targetStr);
return index < 0 ? "" : sourceStr.substr(index + targetStr.length);
}
/**
* Manages a single instance of an autocomplete search.
*
* The first three parameters all originate from the similarly named parameters
* of nsIAutoCompleteSearch.startSearch().
*
* @param searchString
* The search string.
* @param searchParam
* A space-delimited string of search parameters. The following
* parameters are supported:
* * enable-actions: Include "actions", such as switch-to-tab and search
* engine aliases, in the results.
* * disable-private-actions: The search is taking place in a private
* window outside of permanent private-browsing mode. The search
* should exclude privacy-sensitive results as appropriate.
* * private-window: The search is taking place in a private window,
* possibly in permanent private-browsing mode. The search
* should exclude privacy-sensitive results as appropriate.
* * user-context-id: The userContextId of the selected tab.
* @param autocompleteListener
* An nsIAutoCompleteObserver.
* @param autocompleteSearch
* An nsIAutoCompleteSearch.
* @param prohibitSearchSuggestions
* Whether search suggestions are allowed for this search.
* @param [optional] previousResult
* The result object from the previous search. if available.
*/
function Search(searchString, searchParam, autocompleteListener,
autocompleteSearch, prohibitSearchSuggestions, previousResult) {
// We want to store the original string for case sensitive searches.
this._originalSearchString = searchString;
this._trimmedOriginalSearchString = searchString.trim();
let unescapedSearchString =
Services.textToSubURI.unEscapeURIForUI("UTF-8", this._trimmedOriginalSearchString);
let [prefix, suffix] = stripPrefix(unescapedSearchString);
this._searchString = suffix;
this._strippedPrefix = prefix.toLowerCase();
this._matchBehavior = Ci.mozIPlacesAutoComplete.MATCH_BOUNDARY;
// Set the default behavior for this search.
this._behavior = this._searchString ? UrlbarPrefs.get("defaultBehavior")
: UrlbarPrefs.get("emptySearchDefaultBehavior");
let params = new Set(searchParam.split(" "));
this._enableActions = params.has("enable-actions");
this._disablePrivateActions = params.has("disable-private-actions");
this._inPrivateWindow = params.has("private-window");
this._prohibitAutoFill = params.has("prohibit-autofill");
this._disableTelemetry = params.has("disable-telemetry");
// Extract the max-results param.
let maxResults = searchParam.match(REGEXP_MAX_RESULTS);
this._maxResults = maxResults ? parseInt(maxResults[1])
: UrlbarPrefs.get("maxRichResults");
// Extract the user-context-id param.
let userContextId = searchParam.match(REGEXP_USER_CONTEXT_ID);
this._userContextId = userContextId ?
parseInt(userContextId[1], 10) :
Ci.nsIScriptSecurityManager.DEFAULT_USER_CONTEXT_ID;
// Use the original string here, not the stripped one, so the tokenizer can
// properly recognize token types.
let {tokens} = UrlbarTokenizer.tokenize({searchString: unescapedSearchString});
// This allows to handle leading or trailing restriction characters specially.
this._leadingRestrictionToken = null;
this._trailingRestrictionToken = null;
if (tokens.length > 0) {
if (UrlbarTokenizer.isRestrictionToken(tokens[0]) &&
(tokens.length > 1 || tokens[0].type == UrlbarTokenizer.TYPE.RESTRICT_SEARCH)) {
this._leadingRestrictionToken = tokens[0].value;
}
if (UrlbarTokenizer.isRestrictionToken(tokens[tokens.length - 1]) &&
(tokens.length > 1 || tokens[tokens.length - 1].type == UrlbarTokenizer.TYPE.RESTRICT_SEARCH)) {
this._trailingRestrictionToken = tokens[tokens.length - 1].value;
}
// Check if the first token has a strippable prefix and remove it, but don't
// create an empty token.
if (prefix && tokens[0].value.length > prefix.length) {
tokens[0].value = tokens[0].value.substring(prefix.length);
}
}
this._searchTokens = this.filterTokens(tokens);
// The heuristic token is the first filtered search token, but only when it's
// actually the first thing in the search string. If a prefix or restriction
// character occurs first, then the heurstic token is null. We use the
// heuristic token to help determine the heuristic result. It may be a Places
// keyword, a search engine alias, an extension keyword, or simply a URL or
// part of the search string the user has typed. We won't know until we
// create the heuristic result.
let firstToken = this._searchTokens.length > 0 && this._searchTokens[0].value;
this._heuristicToken = firstToken &&
this._trimmedOriginalSearchString.startsWith(firstToken) ? firstToken : null;
this._keywordSubstitute = null;
this._prohibitSearchSuggestions = prohibitSearchSuggestions;
this._listener = autocompleteListener;
this._autocompleteSearch = autocompleteSearch;
// Create a new result to add eventual matches. Note we need a result
// regardless having matches.
let result = previousResult ||
Cc["@mozilla.org/autocomplete/simple-result;1"]
.createInstance(Ci.nsIAutoCompleteSimpleResult);
result.setSearchString(searchString);
result.setListener({
onValueRemoved(result, spec, removeFromDB) {
if (removeFromDB) {
PlacesUtils.history.remove(spec).catch(Cu.reportError);
}
},
QueryInterface: ChromeUtils.generateQI([
Ci.nsIAutoCompleteSimpleResultListener,
]),
});
// Will be set later, if needed.
result.setDefaultIndex(-1);
this._result = result;
this._previousSearchMatchTypes = [];
for (let i = 0; previousResult && i < previousResult.matchCount; ++i) {
let style = previousResult.getStyleAt(i);
if (style.includes("heuristic")) {
this._previousSearchMatchTypes.push(UrlbarUtils.RESULT_GROUP.HEURISTIC);
} else if (style.includes("suggestion")) {
this._previousSearchMatchTypes.push(UrlbarUtils.RESULT_GROUP.SUGGESTION);
} else if (style.includes("extension")) {
this._previousSearchMatchTypes.push(UrlbarUtils.RESULT_GROUP.EXTENSION);
} else {
this._previousSearchMatchTypes.push(UrlbarUtils.RESULT_GROUP.GENERAL);
}
}
// Used to limit the number of adaptive results.
this._adaptiveCount = 0;
this._extraAdaptiveRows = [];
// Used to limit the number of remote tab results.
this._extraRemoteTabRows = [];
// This is a replacement for this._result.matchCount, to be used when you need
// to check how many "current" matches have been inserted.
// Indeed this._result.matchCount may include matches from the previous search.
this._currentMatchCount = 0;
// These are used to avoid adding duplicate entries to the results.
this._usedURLs = [];
this._usedPlaceIds = new Set();
// Counters for the number of results per RESULT_GROUP.
this._counts = Object.values(UrlbarUtils.RESULT_GROUP)
.reduce((o, p) => { o[p] = 0; return o; }, {});
}
Search.prototype = {
/**
* Enables the desired AutoComplete behavior.
*
* @param type
* The behavior type to set.
*/
setBehavior(type) {
type = type.toUpperCase();
this._behavior |=
Ci.mozIPlacesAutoComplete["BEHAVIOR_" + type];
},
/**
* Determines if the specified AutoComplete behavior is set.
*
* @param aType
* The behavior type to test for.
* @return true if the behavior is set, false otherwise.
*/
hasBehavior(type) {
let behavior = Ci.mozIPlacesAutoComplete["BEHAVIOR_" + type.toUpperCase()];
if (this._disablePrivateActions &&
behavior == Ci.mozIPlacesAutoComplete.BEHAVIOR_OPENPAGE) {
return false;
}
return this._behavior & behavior;
},
/**
* Used to delay the most complex queries, to save IO while the user is
* typing.
*/
_sleepResolve: null,
_sleep(aTimeMs) {
// Reuse a single instance to try shaving off some usless work before
// the first query.
if (!this._sleepTimer)
this._sleepTimer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
return new Promise(resolve => {
this._sleepResolve = resolve;
this._sleepTimer.initWithCallback(resolve, aTimeMs,
Ci.nsITimer.TYPE_ONE_SHOT);
});
},
/**
* Given an array of tokens, this function determines which query should be
* ran. It also removes any special search tokens.
*
* @param tokens
* An array of search tokens.
* @return A new, filtered array of tokens.
*/
filterTokens(tokens) {
let foundToken = false;
// Set the proper behavior while filtering tokens.
let filtered = [];
for (let token of tokens) {
if (!UrlbarTokenizer.isRestrictionToken(token)) {
filtered.push(token);
continue;
}
let behavior = typeToBehaviorMap.get(token.type);
if (!behavior) {
throw new Error(`Unknown token type ${token.type}`);
}
// Don't remove the token if it didn't match, or if it's an action but
// actions are not enabled.
if (behavior != "openpage" || this._enableActions) {
// Don't use the suggest preferences if it is a token search and
// set the restrict bit to 1 (to intersect the search results).
if (!foundToken) {
foundToken = true;
// Do not take into account previous behavior (e.g.: history, bookmark)
this._behavior = 0;
this.setBehavior("restrict");
}
this.setBehavior(behavior);
}
}
// Set the right JavaScript behavior based on our preference. Note that the
// preference is whether or not we should filter JavaScript, and the
// behavior is if we should search it or not.
if (!UrlbarPrefs.get("filter.javascript")) {
this.setBehavior("javascript");
}
return filtered;
},
/**
* Stop this search.
* After invoking this method, we won't run any more searches or heuristics,
* and no new matches may be added to the current result.
*/
stop() {
// Avoid multiple calls or re-entrance.
if (!this.pending)
return;
if (this._notifyTimer)
this._notifyTimer.cancel();
this._notifyDelaysCount = 0;
if (this._sleepTimer)
this._sleepTimer.cancel();
if (this._sleepResolve) {
this._sleepResolve();
this._sleepResolve = null;
}
if (this._suggestionsFetch) {
this._suggestionsFetch.stop();
this._suggestionsFetch = null;
}
if (typeof this.interrupt == "function") {
this.interrupt();
}
this.pending = false;
},
/**
* Whether this search is active.
*/
pending: true,
/**
* Execute the search and populate results.
* @param conn
* The Sqlite connection.
*/
async execute(conn) {
// A search might be canceled before it starts.
if (!this.pending)
return;
// Used by stop() to interrupt an eventual running statement.
this.interrupt = () => {
// Interrupt any ongoing statement to run the search sooner.
if (!UrlbarProvidersManager.interruptLevel) {
conn.interrupt();
}
};
if (!this._disableTelemetry) {
TelemetryStopwatch.start(TELEMETRY_1ST_RESULT, this);
TelemetryStopwatch.start(TELEMETRY_6_FIRST_RESULTS, this);
}
// Since we call the synchronous parseSubmissionURL function later, we must
// wait for the initialization of PlacesSearchAutocompleteProvider first.
await PlacesSearchAutocompleteProvider.ensureInitialized();
if (!this.pending)
return;
// For any given search, we run many queries/heuristics:
// 1) by alias (as defined in SearchService)
// 2) inline completion from search engine resultDomains
// 3) inline completion for origins (this._originQuery) or urls (this._urlQuery)
// 4) directly typed in url (ie, can be navigated to as-is)
// 5) submission for the current search engine
// 6) Places keywords
// 7) adaptive learning (this._adaptiveQuery)
// 8) open pages not supported by history (this._switchToTabQuery)
// 9) query based on match behavior
//
// (6) only gets run if we get any filtered tokens, since if there are no
// tokens, there is nothing to match.
//
// (1), (4), (5) only get run if actions are enabled. When actions are
// enabled, the first result is always a special result (resulting from one
// of the queries between (1) and (6) inclusive). As such, the UI is
// expected to auto-select the first result when actions are enabled. If the
// first result is an inline completion result, that will also be the
// default result and therefore be autofilled (this also happens if actions
// are not enabled).
// Check for Preloaded Sites Expiry before Autofill
await this._checkPreloadedSitesExpiry();
// If the query is simply "@", then the results should be a list of all the
// search engines with "@" aliases, without a hueristic result.
if (this._trimmedOriginalSearchString == "@") {
let added = await this._addSearchEngineTokenAliasMatches();
if (added) {
this._cleanUpNonCurrentMatches(null);
this._autocompleteSearch.finishSearch(true);
return;
}
}
// Add the first heuristic result, if any. Set _addingHeuristicFirstMatch
// to true so that when the result is added, "heuristic" can be included in
// its style.
this._addingHeuristicFirstMatch = true;
let hasHeuristic = await this._matchFirstHeuristicResult(conn);
this._addingHeuristicFirstMatch = false;
this._cleanUpNonCurrentMatches(UrlbarUtils.RESULT_GROUP.HEURISTIC);
if (!this.pending)
return;
// We sleep a little between adding the heuristicFirstMatch and matching
// any other searches so we aren't kicking off potentially expensive
// searches on every keystroke.
// Though, if there's no heuristic result, we start searching immediately,
// since autocomplete may be waiting for us.
if (hasHeuristic) {
await this._sleep(UrlbarPrefs.get("delay"));
if (!this.pending)
return;
// If the heuristic result is a search engine result with an empty query
// and we have either a token alias or the search restriction char, then
// we're done. We want to show only that single result as a clear hint
// that the user can continue typing to search.
// For the restriction character case, also consider a single char query
// or just the char itself, anyway we don't return search suggestions
// unless at least 2 chars have been typed. Thus "?__" and "? a" should
// finish here, while "?aa" should continue.
let emptyQueryTokenAlias = this._searchEngineAliasMatch &&
this._searchEngineAliasMatch.isTokenAlias &&
!this._searchEngineAliasMatch.query;
let emptySearchRestriction = this._trimmedOriginalSearchString.length <= 3 &&
this._leadingRestrictionToken == UrlbarTokenizer.RESTRICT.SEARCH &&
/\s*\S?$/.test(this._trimmedOriginalSearchString);
if (emptySearchRestriction || emptyQueryTokenAlias) {
this._cleanUpNonCurrentMatches(null, false);
this._autocompleteSearch.finishSearch(true);
return;
}
}
// Only add extension suggestions if the first token is a registered keyword
// and the search string has characters after the first token.
let extensionsCompletePromise = Promise.resolve();
if (this._heuristicToken &&
ExtensionSearchHandler.isKeywordRegistered(this._heuristicToken) &&
substringAfter(this._originalSearchString, this._heuristicToken) &&
!this._searchEngineAliasMatch) {
// Do not await on this, since extensions cannot notify when they are done
// adding results, it may take too long.
extensionsCompletePromise = this._matchExtensionSuggestions();
} else if (ExtensionSearchHandler.hasActiveInputSession()) {
ExtensionSearchHandler.handleInputCancelled();
}
// Start adding search suggestions, unless they aren't required or the
// window is private.
let searchSuggestionsCompletePromise = Promise.resolve();
if (this._enableActions &&
this.hasBehavior("search") &&
!this._inPrivateWindow) {
let query =
this._searchEngineAliasMatch ? this._searchEngineAliasMatch.query :
substringAt(this._originalSearchString, this._searchTokens[0].value);
if (query) {
// Limit the string sent for search suggestions to a maximum length.
query = query.substr(0, UrlbarPrefs.get("maxCharsForSearchSuggestions"));
// Don't add suggestions if the query may expose sensitive information.
if (!this._prohibitSearchSuggestionsFor(query)) {
let engine;
if (this._searchEngineAliasMatch) {
engine = this._searchEngineAliasMatch.engine;
} else {
engine = await PlacesSearchAutocompleteProvider.currentEngine();
if (!this.pending) {
return;
}
}
let alias =
this._searchEngineAliasMatch &&
this._searchEngineAliasMatch.alias ||
"";
searchSuggestionsCompletePromise =
this._matchSearchSuggestions(engine, query, alias);
}
}
}
// If the user used a search engine token alias, then the only results we
// want to show are suggestions from that engine, so we're done. We're also
// done if we're restricting results to suggestions.
if ((this._searchEngineAliasMatch &&
this._searchEngineAliasMatch.isTokenAlias) ||
(this._enableActions &&
this.hasBehavior("search") &&
this.hasBehavior("restrict"))) {
// Wait for the suggestions to be added.
await searchSuggestionsCompletePromise;
this._cleanUpNonCurrentMatches(null);
this._autocompleteSearch.finishSearch(true);
return;
}
// Clear previous search suggestions.
searchSuggestionsCompletePromise.then(() => {
this._cleanUpNonCurrentMatches(UrlbarUtils.RESULT_GROUP.SUGGESTION);
});
// Run the adaptive query first.
await conn.executeCached(this._adaptiveQuery[0], this._adaptiveQuery[1],
this._onResultRow.bind(this));
if (!this.pending)
return;
// Then fetch remote tabs.
if (this._enableActions && this.hasBehavior("openpage")) {
await this._matchRemoteTabs();
if (!this.pending)
return;
}
// Get the final query, based on the tokens found in the search string and
// the keyword substitution, if any.
let queries = [];
// "openpage" behavior is supported by the default query.
// _switchToTabQuery instead returns only pages not supported by history.
if (this.hasBehavior("openpage")) {
queries.push(this._switchToTabQuery);
}
queries.push(this._searchQuery);
// Finally run all the other queries.
for (let [query, params] of queries) {
await conn.executeCached(query, params, this._onResultRow.bind(this));
if (!this.pending)
return;
}
// If we have some unused adaptive matches, add them now.
while (this._extraAdaptiveRows.length &&
this._currentMatchCount < this._maxResults) {
this._addFilteredQueryMatch(this._extraAdaptiveRows.shift());
}
// If we have some unused remote tab matches, add them now.
while (this._extraRemoteTabRows.length &&
this._currentMatchCount < this._maxResults) {
this._addMatch(this._extraRemoteTabRows.shift());
}
// Ideally we should wait until MATCH_BOUNDARY_ANYWHERE, but that query
// may be really slow and we may end up showing old results for too long.
this._cleanUpNonCurrentMatches(UrlbarUtils.RESULT_GROUP.GENERAL);
this._matchAboutPages();
// If we do not have enough matches search again with MATCH_ANYWHERE, to
// get more matches.
let count = this._counts[UrlbarUtils.RESULT_GROUP.GENERAL] +
this._counts[UrlbarUtils.RESULT_GROUP.HEURISTIC];
if (count < this._maxResults) {
this._matchBehavior = Ci.mozIPlacesAutoComplete.MATCH_ANYWHERE;
for (let [query, params] of [ this._adaptiveQuery,
this._searchQuery ]) {
await conn.executeCached(query, params, this._onResultRow.bind(this));
if (!this.pending)
return;
}
}
this._matchPreloadedSites();
// Ensure to fill any remaining space.
await searchSuggestionsCompletePromise;
await extensionsCompletePromise;
},
_shouldMatchAboutPages() {
// Only autocomplete input that starts with 'about:' and has at least 1 more
// character.
return (this._strippedPrefix == "about:" &&
this._searchString);
},
_matchAboutPages() {
if (!this._shouldMatchAboutPages()) {
return;
}
for (const url of AboutPagesUtils.visibleAboutUrls) {
if (url.startsWith(`about:${this._searchString}`)) {
this._addMatch({
value: url,
comment: url,
frecency: FRECENCY_DEFAULT,
});
}
}
},
_matchAboutPageForAutofill() {
if (!this._shouldMatchAboutPages()) {
return false;
}
for (const url of AboutPagesUtils.visibleAboutUrls) {
if (url.startsWith(`about:${this._searchString.toLowerCase()}`)) {
this._result.setDefaultIndex(0);
this._addAutofillMatch(
url.substr(6),
url,
);
return true;
}
}
return false;
},
async _checkPreloadedSitesExpiry() {
if (!UrlbarPrefs.get("usepreloadedtopurls.enabled"))
return;
let profileCreationDate = await ProfileAgeCreatedPromise;
let daysSinceProfileCreation = (Date.now() - profileCreationDate) / MS_PER_DAY;
if (daysSinceProfileCreation > UrlbarPrefs.get("usepreloadedtopurls.expire_days"))
Services.prefs.setBoolPref("browser.urlbar.usepreloadedtopurls.enabled", false);
},
_matchPreloadedSites() {
if (!UrlbarPrefs.get("usepreloadedtopurls.enabled")) {
return;
}
if (!this._searchString) {
// The user hasn't typed anything, or they've only typed a scheme.
return;
}
for (let site of PreloadedSiteStorage.sites) {
let url = site.uri.spec;
if ((!this._strippedPrefix || url.startsWith(this._strippedPrefix)) &&
(site.uri.host.includes(this._searchString) ||
site._matchTitle.includes(this._searchString))) {
this._addMatch({
value: url,
comment: site.title,
style: "preloaded-top-site",
frecency: FRECENCY_DEFAULT - 1,
});
}
}
},
_matchPreloadedSiteForAutofill() {
if (!UrlbarPrefs.get("usepreloadedtopurls.enabled")) {
return false;
}
let matchedSite = PreloadedSiteStorage.sites.find(site => {
return (!this._strippedPrefix ||
site.uri.spec.startsWith(this._strippedPrefix)) &&
(site.uri.host.startsWith(this._searchString) ||
site.uri.host.startsWith("www." + this._searchString));
});
if (!matchedSite) {
return false;
}
this._result.setDefaultIndex(0);
let url = matchedSite.uri.spec;
let value = stripPrefix(url)[1];
value = value.substr(value.indexOf(this._searchString));
this._addAutofillMatch(
value,
url,
Infinity,
["preloaded-top-site"]
);
return true;
},
/**
* Adds matches for all the engines with "@" aliases, if any.
*
* @returns {bool} True if any results were added, false if not.
*/
async _addSearchEngineTokenAliasMatches() {
let engines = await PlacesSearchAutocompleteProvider.tokenAliasEngines();
if (!engines || !engines.length) {
return false;
}
for (let { engine, tokenAliases } of engines) {
this._addSearchEngineMatch({
engine,
alias: tokenAliases[0],
});
}
return true;
},
async _matchSearchEngineTokenAliasForAutofill() {
// We need an "@engine" heuristic token.
let token = this._heuristicToken;
if (!token || token.length == 1 || !token.startsWith("@")) {
return false;
}
// See if any engine has a token alias that starts with the heuristic token.
let engines = await PlacesSearchAutocompleteProvider.tokenAliasEngines();
for (let { engine, tokenAliases } of engines) {
for (let alias of tokenAliases) {
if (alias.startsWith(token.toLocaleLowerCase())) {
// We found one. The match we add here is a little special compared
// to others. It needs to be an autofill match and its `value` must
// be the string that will be autofilled so that the controller will
// autofill it. But it also must be a searchengine action so that the
// front end will style it as a search engine result. The front end
// uses `finalCompleteValue` as the URL for autofill results, so set
// that to the moz-action URL.
let aliasPreservingUserCase = token + alias.substr(token.length);
let value = aliasPreservingUserCase + " ";
this._result.setDefaultIndex(0);
this._addMatch({
value,
finalCompleteValue: PlacesUtils.mozActionURI("searchengine", {
engineName: engine.name,
alias: aliasPreservingUserCase,
input: value,
searchQuery: "",
}),
comment: engine.name,
frecency: FRECENCY_DEFAULT,
style: "autofill action searchengine",
icon: engine.iconURI ? engine.iconURI.spec : null,
});
// Set _searchEngineAliasMatch with an empty query so that we don't
// attempt to add any more matches. When a token alias is autofilled,
// the only match should be the one we just added.
this._searchEngineAliasMatch = {
engine,
alias: aliasPreservingUserCase,
query: "",
isTokenAlias: true,
};
return true;
}
}
}
return false;
},
async _matchFirstHeuristicResult(conn) {
// We always try to make the first result a special "heuristic" result. The
// heuristics below determine what type of result it will be, if any.
let hasSearchTerms = this._searchTokens.length > 0;
if (hasSearchTerms) {
// It may be a keyword registered by an extension.
let matched = await this._matchExtensionHeuristicResult();
if (matched) {
return true;
}
}
if (this._enableActions && hasSearchTerms) {
// It may be a search engine with an alias - which works like a keyword.
let matched = await this._matchSearchEngineAlias();
if (matched) {
return true;
}
}
if (this.pending && hasSearchTerms) {
// It may be a Places keyword.
let matched = await this._matchPlacesKeyword();
if (matched) {
return true;
}
}
let shouldAutofill = this._shouldAutofill;
if (this.pending && shouldAutofill) {
// It may also look like an about: link.
let matched = await this._matchAboutPageForAutofill();
if (matched) {
return true;
}
}
if (this.pending && shouldAutofill) {
// It may also look like a URL we know from the database.
let matched = await this._matchKnownUrl(conn);
if (matched) {
return true;
}
}
if (this.pending && shouldAutofill) {
// Or it may look like a search engine domain.
let matched = await this._matchSearchEngineDomain();
if (matched) {
return true;
}
}
if (this.pending && shouldAutofill) {
let matched = this._matchPreloadedSiteForAutofill();
if (matched) {
return true;
}
}
if (this.pending && shouldAutofill) {
let matched = await this._matchSearchEngineTokenAliasForAutofill();
if (matched) {
return true;
}
}
if (this.pending && hasSearchTerms && this._enableActions) {
// If we don't have a result that matches what we know about, then
// we use a fallback for things we don't know about.
// We may not have auto-filled, but this may still look like a URL.
// However, even if the input is a valid URL, we may not want to use
// it as such. This can happen if the host would require whitelisting,
// but isn't in the whitelist.
let matched = await this._matchUnknownUrl();
if (matched) {
// Because we think this may be a URL, we won't be fetching search
// suggestions for it.
this._prohibitSearchSuggestions = true;
// Since we can't tell if this is a real URL and
// whether the user wants to visit or search for it,
// we always provide an alternative searchengine match.
try {
new URL(this._originalSearchString);
} catch (ex) {
if (UrlbarPrefs.get("keyword.enabled") &&
!looksLikeUrl(this._originalSearchString, true)) {
this._addingHeuristicFirstMatch = false;
await this._matchCurrentSearchEngine();
this._addingHeuristicFirstMatch = true;
}
}
return true;
}
}
if (this.pending && this._enableActions && this._originalSearchString) {
// When all else fails, and the search string is non-empty, we search
// using the current search engine.
let matched = await this._matchCurrentSearchEngine();
if (matched) {
return true;
}
}
return false;
},
_matchSearchSuggestions(engine, searchString, alias) {
this._suggestionsFetch =
PlacesSearchAutocompleteProvider.newSuggestionsFetch(
engine,
searchString,
this._inPrivateWindow,
UrlbarPrefs.get("maxHistoricalSearchSuggestions"),
this._maxResults - UrlbarPrefs.get("maxHistoricalSearchSuggestions"),
this._userContextId
);
return this._suggestionsFetch.fetchCompletePromise.then(() => {
// The fetch has been canceled already.
if (!this._suggestionsFetch) {
return;
}
if (this._suggestionsFetch.resultsCount >= 0 &&
this._suggestionsFetch.resultsCount < 2) {
// The original string is used to properly compare with the next fetch.
this._lastLowResultsSearchSuggestion = this._originalSearchString;
}
while (this.pending) {
let result = this._suggestionsFetch.consume();
if (!result)
break;
let { suggestion, historical } = result;
if (!looksLikeUrl(suggestion)) {
this._addSearchEngineMatch({
engine,
alias,
query: searchString,
suggestion,
historical,
});
}
}
}).catch(Cu.reportError);
},
_prohibitSearchSuggestionsFor(searchString) {
if (this._prohibitSearchSuggestions)
return true;
// Never prohibit suggestions when the user has used a search engine token
// alias. We want "@engine query" to return suggestions from the engine.
if (this._searchEngineAliasMatch &&
this._searchEngineAliasMatch.isTokenAlias) {
return false;
}
// Suggestions for a single letter are unlikely to be useful.
if (searchString.length < 2)
return true;
// The first token may be a whitelisted host.
if (this._searchTokens.length == 1 &&
this._searchTokens[0].type == UrlbarTokenizer.TYPE.POSSIBLE_ORIGIN &&
Services.uriFixup.isDomainWhitelisted(this._searchTokens[0].value, -1)) {
return true;
}
// Disallow fetching search suggestions for strings that start off looking
// like urls.
if (DISALLOWED_URLLIKE_PREFIXES.some(prefix => this._trimmedOriginalSearchString == prefix) ||
DISALLOWED_URLLIKE_PREFIXES.some(prefix => this._trimmedOriginalSearchString.startsWith(prefix + ":"))) {
return true;
}
// Disallow fetching search suggestions for strings looking like URLs, or
// non-alphanumeric origins, to avoid disclosing information about networks
// or passwords.
return this._searchTokens.some(t => {
return t.type == UrlbarTokenizer.TYPE.POSSIBLE_URL ||
(t.type == UrlbarTokenizer.TYPE.POSSIBLE_ORIGIN &&
!/^[a-z0-9-]+$/i.test(t.value));
});
},
async _matchKnownUrl(conn) {
let gotResult = false;
// If search string looks like an origin, try to autofill against origins.
// Otherwise treat it as a possible URL. When the string has only one slash
// at the end, we still treat it as an URL.
let query, params;
if (UrlbarTokenizer.looksLikeOrigin(this._searchString)) {
[query, params] = this._originQuery;
} else {
[query, params] = this._urlQuery;
}
// _urlQuery doesn't always return a query.
if (query) {
await conn.executeCached(query, params, (row, cancel) => {
gotResult = true;
this._onResultRow(row, cancel);
});
}
return gotResult;
},
_matchExtensionHeuristicResult() {
if (this._heuristicToken &&
ExtensionSearchHandler.isKeywordRegistered(this._heuristicToken) &&
substringAfter(this._originalSearchString, this._heuristicToken)) {
let description =
ExtensionSearchHandler.getDescription(this._heuristicToken);
this._addExtensionMatch(this._originalSearchString, description);
return true;
}
return false;
},
async _matchPlacesKeyword() {
if (!this._heuristicToken) {
return false;
}
let keyword = this._heuristicToken;
let entry = await PlacesUtils.keywords.fetch(keyword);
if (!entry) {
return false;
}
let searchString =
substringAfter(this._originalSearchString, keyword).trim();
let url = null, postData = null;
try {
[url, postData] =
await BrowserUtils.parseUrlAndPostData(entry.url.href,
entry.postData,
searchString);
} catch (ex) {
// It's not possible to bind a param to this keyword.
return false;
}
let style = "keyword";
let value = url;
if (this._enableActions) {
style = "action " + style;
value = PlacesUtils.mozActionURI("keyword", {
url,
keyword,
input: this._originalSearchString,
postData,
});
}
// The title will end up being "host: queryString"
let comment = entry.url.host;
this._addMatch({
value,
comment,
// Don't use the url with replaced strings, since the icon doesn't change
// but the string does, it may cause pointless icon flicker on typing.
icon: iconHelper(entry.url),
style,
frecency: Infinity,
});
if (!this._keywordSubstitute) {
this._keywordSubstitute = entry.url.host;
}
return true;
},
async _matchSearchEngineDomain() {
if (!UrlbarPrefs.get("autoFill.searchEngines")) {
return false;
}
if (!this._searchString) {
return false;
}
// PlacesSearchAutocompleteProvider only matches against engine domains.
// Remove an eventual trailing slash from the search string (without the
// prefix) and check if the resulting string is worth matching.
// Later, we'll verify that the found result matches the original
// searchString and eventually discard it.
let searchStr = this._searchString;
if (searchStr.indexOf("/") == searchStr.length - 1) {
searchStr = searchStr.slice(0, -1);
}
// If the search string looks more like a url than a domain, bail out.
if (!UrlbarTokenizer.looksLikeOrigin(searchStr)) {
return false;
}
let engine =
await PlacesSearchAutocompleteProvider.engineForDomainPrefix(searchStr);
if (!engine) {
return false;
}
let url = engine.searchForm;
let domain = engine.getResultDomain();
// Verify that the match we got is acceptable. Autofilling "example/" to
// "example.com/" would not be good.
if ((this._strippedPrefix && !url.startsWith(this._strippedPrefix)) ||
!(domain + "/").includes(this._searchString)) {
return false;
}
// The value that's autofilled in the input is the prefix the user typed, if
// any, plus the portion of the engine domain that the user typed. Append a
// trailing slash too, as is usual with autofill.
let value =
this._strippedPrefix + domain.substr(domain.indexOf(searchStr)) + "/";
let finalCompleteValue = url;
try {
let fixupInfo = Services.uriFixup.getFixupURIInfo(url, 0);
if (fixupInfo.fixedURI) {
finalCompleteValue = fixupInfo.fixedURI.spec;
}
} catch (ex) {}
this._result.setDefaultIndex(0);
this._addMatch({
value,
finalCompleteValue,
comment: engine.name,
icon: engine.iconURI ? engine.iconURI.spec : null,
style: "priority-search",
frecency: Infinity,
});
return true;
},
async _matchSearchEngineAlias() {
if (!this._heuristicToken) {
return false;
}
let alias = this._heuristicToken;
let engine = await PlacesSearchAutocompleteProvider.engineForAlias(alias);
if (!engine) {
return false;
}
this._searchEngineAliasMatch = {
engine,
alias,
query: substringAfter(this._originalSearchString, alias).trim(),
isTokenAlias: alias.startsWith("@"),
};
this._addSearchEngineMatch(this._searchEngineAliasMatch);
if (!this._keywordSubstitute) {
this._keywordSubstitute = engine.getResultDomain();
}
return true;
},
async _matchCurrentSearchEngine() {
let engine = await PlacesSearchAutocompleteProvider.currentEngine();
if (!engine || !this.pending) {
return false;
}
// Strip a leading or trailing restriction char.
let query = this._trimmedOriginalSearchString;
if (this._leadingRestrictionToken) {
query = substringAfter(query, this._leadingRestrictionToken).trim();
}
if (this._trailingRestrictionToken) {
query = query.substring(0, query.lastIndexOf(this._trailingRestrictionToken));
}
this._addSearchEngineMatch({ engine, query });
return true;
},
_addExtensionMatch(content, comment) {
let count = this._counts[UrlbarUtils.RESULT_GROUP.EXTENSION] +
this._counts[UrlbarUtils.RESULT_GROUP.HEURISTIC];
if (count >= UrlbarUtils.MAXIMUM_ALLOWED_EXTENSION_MATCHES) {
return;
}
this._addMatch({
value: PlacesUtils.mozActionURI("extension", {
content,
keyword: this._heuristicToken,
}),
comment,
icon: "chrome://browser/content/extension.svg",
style: "action extension",
frecency: Infinity,
type: UrlbarUtils.RESULT_GROUP.EXTENSION,
});
},
/**
* Adds a search engine match.
*
* @param {nsISearchEngine} engine
* The search engine associated with the match.
* @param {string} [query]
* The search query string.
* @param {string} [alias]
* The search engine alias associated with the match, if any.
* @param {string} [suggestion]
* The suggestion from the search engine, if you're adding a suggestion
* match.
* @param {bool} [historical]
* True if you're adding a suggestion match and the suggestion is from
* the user's local history (and not the search engine).
*/
_addSearchEngineMatch({engine,
query = "",
alias = undefined,
suggestion = undefined,
historical = false}) {
let actionURLParams = {
engineName: engine.name,
searchQuery: query,
};
if (suggestion) {
// `input` should include the alias.
actionURLParams.input = (alias ? `${alias} ` : "") + suggestion;
} else if (alias && !query) {
// `input` should have a trailing space so that when the user selects the
// result, they can start typing their query without first having to enter
// a space between the alias and query.
actionURLParams.input = `${alias} `;
} else {
actionURLParams.input = this._originalSearchString;
}
let match = {
comment: engine.name,
icon: engine.iconURI && !suggestion ? engine.iconURI.spec : null,
style: "action searchengine",
frecency: FRECENCY_DEFAULT,
};
if (alias) {
actionURLParams.alias = alias;
match.style += " alias";
}
if (suggestion) {
actionURLParams.searchSuggestion = suggestion;
match.style += " suggestion";
match.type = UrlbarUtils.RESULT_GROUP.SUGGESTION;
}
match.value = PlacesUtils.mozActionURI("searchengine", actionURLParams);
this._addMatch(match);
},
_matchExtensionSuggestions() {
let data = {
keyword: this._heuristicToken,
text: this._originalSearchString,
inPrivateWindow: this._inPrivateWindow,
};
let promise = ExtensionSearchHandler.handleSearch(data,
suggestions => {
for (let suggestion of suggestions) {
let content = `${this._heuristicToken} ${suggestion.content}`;
this._addExtensionMatch(content, suggestion.description);
}
}
);
// Remove previous search matches sooner than the maximum timeout, otherwise
// matches may appear stale for a long time.
// This is necessary because WebExtensions don't have a method to notify
// that they are done providing results, so they could be pending forever.
setTimeout(() => this._cleanUpNonCurrentMatches(UrlbarUtils.RESULT_GROUP.EXTENSION), 100);
// Since the extension has no way to signale when it's done pushing
// results, we add a timeout racing with the addition.
let timeoutPromise = new Promise(resolve => {
let timer = setTimeout(resolve, MAXIMUM_ALLOWED_EXTENSION_TIME_MS);
// TODO Bug 1531268: Figure out why this cancel helps makes the tests
// stable.
promise.then(timer.cancel);
});
return Promise.race([timeoutPromise, promise]).catch(Cu.reportError);
},
async _matchRemoteTabs() {
// Bail out early for non-sync users.
if (!syncUsernamePref) {
return;
}
let matches = await PlacesRemoteTabsAutocompleteProvider.getMatches(this._originalSearchString);
for (let {url, title, icon, deviceName, lastUsed} of matches) {
// It's rare that Sync supplies the icon for the page (but if it does, it
// is a string URL)
if (!icon) {
icon = iconHelper(url);
} else {
icon = PlacesUtils.favicons
.getFaviconLinkForIcon(Services.io.newURI(icon)).spec;
}
let match = {
// We include the deviceName in the action URL so we can render it in
// the URLBar.
value: PlacesUtils.mozActionURI("remotetab", { url, deviceName }),
comment: title || url,
style: "action remotetab",
// we want frecency > FRECENCY_DEFAULT so it doesn't get pushed out
// by "remote" matches.
frecency: FRECENCY_DEFAULT + 1,
icon,
};
if (lastUsed > (Date.now() - RECENT_REMOTE_TAB_THRESHOLD_MS)) {
this._addMatch(match);
} else {
this._extraRemoteTabRows.push(match);
}
}
},
// TODO (bug 1054814): Use visited URLs to inform which scheme to use, if the
// scheme isn't specificed.
_matchUnknownUrl() {
if (!this._searchString && this._strippedPrefix) {
// The user just typed a stripped protocol, don't build a non-sense url
// like http://http/ for it.
return false;
}
// The user may have typed something like "word?" to run a search, we should
// not convert that to a url.
if (this.hasBehavior("search") && this.hasBehavior("restrict")) {
return false;
}
let flags = Ci.nsIURIFixup.FIXUP_FLAG_FIX_SCHEME_TYPOS |
Ci.nsIURIFixup.FIXUP_FLAG_ALLOW_KEYWORD_LOOKUP;
let fixupInfo = null;
let searchUrl = this._trimmedOriginalSearchString;
try {
fixupInfo = Services.uriFixup.getFixupURIInfo(searchUrl,
flags);
} catch (e) {
if (e.result == Cr.NS_ERROR_MALFORMED_URI &&
!UrlbarPrefs.get("keyword.enabled")) {
let value = PlacesUtils.mozActionURI("visiturl", {
url: searchUrl,
input: searchUrl,
});
this._addMatch({
value,
comment: searchUrl,
style: "action visiturl",
frecency: Infinity,
});
return true;
}
return false;
}
// If the URI cannot be fixed or the preferred URI would do a keyword search,
// that basically means this isn't useful to us. Note that
// fixupInfo.keywordAsSent will never be true if the keyword.enabled pref
// is false or there are no engines, so in that case we will always return
// a "visit".
if (!fixupInfo.fixedURI || fixupInfo.keywordAsSent)
return false;
let uri = fixupInfo.fixedURI;
// Check the host, as "http:///" is a valid nsIURI, but not useful to us.
// But, some schemes are expected to have no host. So we check just against
// schemes we know should have a host. This allows new schemes to be
// implemented without us accidentally blocking access to them.
let hostExpected = ["http", "https", "ftp", "chrome"].includes(uri.scheme);
if (hostExpected && !uri.host)
return false;
// getFixupURIInfo() escaped the URI, so it may not be pretty. Embed the
// escaped URL in the action URI since that URL should be "canonical". But
// pass the pretty, unescaped URL as the match comment, since it's likely
// to be displayed to the user, and in any case the front-end should not
// rely on it being canonical.
let escapedURL = uri.displaySpec;
let displayURL = Services.textToSubURI.unEscapeURIForUI("UTF-8", escapedURL);
let value = PlacesUtils.mozActionURI("visiturl", {
url: escapedURL,
input: searchUrl,
});
let match = {
value,
comment: displayURL,
style: "action visiturl",
frecency: Infinity,
};
// We don't know if this url is in Places or not, and checking that would
// be expensive. Thus we also don't know if we may have an icon.
// If we'd just try to fetch the icon for the typed string, we'd cause icon
// flicker, since the url keeps changing while the user types.
// By default we won't provide an icon, but for the subset of urls with a
// host we'll check for a typed slash and set favicon for the host part.
if (hostExpected &&
(searchUrl.endsWith("/") || uri.pathQueryRef.length > 1)) {
match.icon = `page-icon:${uri.prePath}/`;
}
this._addMatch(match);
return true;
},
_onResultRow(row, cancel) {
let queryType = row.getResultByIndex(QUERYINDEX_QUERYTYPE);
switch (queryType) {
case QUERYTYPE_AUTOFILL_ORIGIN:
this._result.setDefaultIndex(0);
this._addOriginAutofillMatch(row);
break;
case QUERYTYPE_AUTOFILL_URL:
this._result.setDefaultIndex(0);
this._addURLAutofillMatch(row);
break;
case QUERYTYPE_ADAPTIVE:
this._addAdaptiveQueryMatch(row);
break;
case QUERYTYPE_FILTERED:
this._addFilteredQueryMatch(row);
break;
}
// If the search has been canceled by the user or by _addMatch, or we
// fetched enough results, we can stop the underlying Sqlite query.
let count = this._counts[UrlbarUtils.RESULT_GROUP.GENERAL] +
this._counts[UrlbarUtils.RESULT_GROUP.HEURISTIC];
if (!this.pending || count >= this._maxResults) {
cancel();
}
},
_maybeRestyleSearchMatch(match) {
// Return if the URL does not represent a search result.
let parseResult =
PlacesSearchAutocompleteProvider.parseSubmissionURL(match.value);
if (!parseResult) {
return;
}
// Do not apply the special style if the user is doing a search from the
// location bar but the entered terms match an irrelevant portion of the
// URL. For example, "https://www.google.com/search?q=terms&client=firefox"
// when searching for "Firefox".
let terms = parseResult.terms.toLowerCase();
if (this._searchTokens.length > 0 &&
this._searchTokens.every(token => !terms.includes(token.value))) {
return;
}
// Turn the match into a searchengine action with a favicon.
match.value = PlacesUtils.mozActionURI("searchengine", {
engineName: parseResult.engineName,
input: parseResult.terms,
searchQuery: parseResult.terms,
});
match.comment = parseResult.engineName;
match.icon = match.icon || match.iconUrl;
match.style = "action searchengine favicon";
},
_addMatch(match) {
if (typeof match.frecency != "number")
throw new Error("Frecency not provided");
if (this._addingHeuristicFirstMatch)
match.type = UrlbarUtils.RESULT_GROUP.HEURISTIC;
else if (typeof match.type != "string")
match.type = UrlbarUtils.RESULT_GROUP.GENERAL;
// A search could be canceled between a query start and its completion,
// in such a case ensure we won't notify any result for it.
if (!this.pending)
return;
match.style = match.style || "favicon";
// Restyle past searches, unless they are bookmarks or special results.
if (UrlbarPrefs.get("restyleSearches") && match.style == "favicon") {
this._maybeRestyleSearchMatch(match);
}
if (this._addingHeuristicFirstMatch) {
match.style += " heuristic";
}
match.icon = match.icon || "";
match.finalCompleteValue = match.finalCompleteValue || "";
let {index, replace} = this._getInsertIndexForMatch(match);
if (index == -1)
return;
if (replace) { // Replacing an existing match from the previous search.
this._result.removeMatchAt(index);
}
this._result.insertMatchAt(index,
match.value,
match.comment,
match.icon,
match.style,
match.finalCompleteValue);
this._currentMatchCount++;
this._counts[match.type]++;
if (!this._disableTelemetry) {
if (this._currentMatchCount == 1)
TelemetryStopwatch.finish(TELEMETRY_1ST_RESULT, this);
if (this._currentMatchCount == 6)
TelemetryStopwatch.finish(TELEMETRY_6_FIRST_RESULTS, this);
}
this.notifyResult(true, match.type == UrlbarUtils.RESULT_GROUP.HEURISTIC);
},
_getInsertIndexForMatch(match) {
// Check for duplicates and either discard (by returning -1) the duplicate
// or suggest to replace the original match, in case the new one is more
// specific (for example a Remote Tab wins over History, and a Switch to Tab
// wins over a Remote Tab).
// Must check both id and url, cause keywords dynamically modify the url.
// Note: this partially fixes Bug 1222435, but not if the urls differ more
// than just by "http://". We should still evaluate www and other schemes
// equivalences.
let [urlMapKey, action] = makeKeyForMatch(match);
if ((match.placeId && this._usedPlaceIds.has(match.placeId)) ||
this._usedURLs.some(e => ObjectUtils.deepEqual(e.key, urlMapKey))) {
let isDupe = true;
if (action && ["switchtab", "remotetab"].includes(action.type)) {
// The new entry is a switch/remote tab entry, look for the duplicate
// among current matches.
for (let i = 0; i < this._usedURLs.length; ++i) {
let {key: matchKey, action: matchAction, type: matchType} = this._usedURLs[i];
if (ObjectUtils.deepEqual(matchKey, urlMapKey)) {
isDupe = true;
// Don't replace the match if the existing one is heuristic and the
// new one is a switchtab, instead also add the switchtab match.
if (matchType == UrlbarUtils.RESULT_GROUP.HEURISTIC &&
action.type == "switchtab") {
isDupe = false;
// Since we allow to insert a dupe in this case, we must continue
// checking the next matches to be sure we won't insert more than
// one dupe. For this same reason we must reset isDupe = true for
// each found dupe.
continue;
}
if (!matchAction || action.type == "switchtab") {
this._usedURLs[i] = {key: urlMapKey, action, type: match.type};
return { index: i, replace: true };
}
break; // Found the duplicate, no reason to continue.
}
}
}
if (isDupe) {
return { index: -1, replace: false };
}
}
// Add this to our internal tracker to ensure duplicates do not end up in
// the result.
// Not all entries have a place id, thus we fallback to the url for them.
// We cannot use only the url since keywords entries are modified to
// include the search string, and would be returned multiple times. Ids
// are faster too.
if (match.placeId)
this._usedPlaceIds.add(match.placeId);
let index = 0;
// The buckets change depending on the context, that is currently decided by
// the first added match (the heuristic one).
if (!this._buckets) {
// Convert the buckets to readable objects with a count property.
let buckets = match.type == UrlbarUtils.RESULT_GROUP.HEURISTIC &&
match.style.includes("searchengine") ? UrlbarPrefs.get("matchBucketsSearch")
: UrlbarPrefs.get("matchBuckets");
// - available is the number of available slots in the bucket
// - insertIndex is the index of the first available slot in the bucket
// - count is the number of matches in the bucket, note that it also
// account for matches from the previous search, while available and
// insertIndex don't.
this._buckets = buckets.map(([type, available]) => ({ type,
available,
insertIndex: 0,
count: 0,
}));
// If we have matches from the previous search, we want to replace them
// in-place to reduce flickering.
// This requires walking the previous matches and marking their existence
// into the current buckets, so that, when we'll add the new matches to
// the buckets, we can either append or replace a match.
if (this._previousSearchMatchTypes.length > 0) {
for (let type of this._previousSearchMatchTypes) {
for (let bucket of this._buckets) {
if (type == bucket.type && bucket.count < bucket.available) {
bucket.count++;
break;
}
}
}
}
}
let replace = 0;
for (let bucket of this._buckets) {
// Move to the next bucket if the match type is incompatible, or if there
// is no available space or if the frecency is below the threshold.
if (match.type != bucket.type || !bucket.available) {
index += bucket.count;
continue;
}
index += bucket.insertIndex;
bucket.available--;
if (bucket.insertIndex < bucket.count) {
replace = true;
} else {
bucket.count++;
}
bucket.insertIndex++;
break;
}
this._usedURLs[index] = {key: urlMapKey, action, type: match.type};
return { index, replace };
},
/**
* Removes matches from a previous search, that are no more returned by the
* current search
* @param type
* The UrlbarUtils.RESULT_GROUP to clean up. Pass null (or another
* falsey value) to clean up all groups.
* @param [optional] notify
* Whether to notify a result change.
*/
_cleanUpNonCurrentMatches(type, notify = true) {
if (this._previousSearchMatchTypes.length == 0 || !this.pending)
return;
let index = 0;
let changed = false;
if (!this._buckets) {
// No match arrived yet, so any match of the given type should be removed
// from the top.
while (this._previousSearchMatchTypes.length &&
(!type || this._previousSearchMatchTypes[0] == type)) {
this._previousSearchMatchTypes.shift();
this._result.removeMatchAt(0);
changed = true;
}
} else {
for (let bucket of this._buckets) {
if (type && bucket.type != type) {
index += bucket.count;
continue;
}
index += bucket.insertIndex;
while (bucket.count > bucket.insertIndex) {
this._result.removeMatchAt(index);
changed = true;
bucket.count--;
}
}
}
if (changed && notify) {
this.notifyResult(true);
}
},
/**
* If in restrict mode, cleanups non current matches for all the empty types.
*/
cleanUpRestrictNonCurrentMatches() {
if (this.hasBehavior("restrict") && this._previousSearchMatchTypes.length > 0) {
for (let type of new Set(this._previousSearchMatchTypes)) {
if (this._counts[type] == 0) {
// Don't notify, since we are about to notify completion.
this._cleanUpNonCurrentMatches(type, false);
}
}
}
},
_addOriginAutofillMatch(row) {
this._addAutofillMatch(
row.getResultByIndex(QUERYINDEX_ORIGIN_AUTOFILLED_VALUE),
row.getResultByIndex(QUERYINDEX_ORIGIN_URL),
row.getResultByIndex(QUERYINDEX_ORIGIN_FRECENCY)
);
},
_addURLAutofillMatch(row) {
let url = row.getResultByIndex(QUERYINDEX_URL_URL);
let strippedURL = row.getResultByIndex(QUERYINDEX_URL_STRIPPED_URL);
// We autofill urls to-the-next-slash.
// http://mozilla.org/foo/bar/baz will be autofilled to:
// - http://mozilla.org/f[oo/]
// - http://mozilla.org/foo/b[ar/]
// - http://mozilla.org/foo/bar/b[az]
let value;
let strippedURLIndex = url.indexOf(strippedURL);
let strippedPrefix = url.substr(0, strippedURLIndex);
let nextSlashIndex = url.indexOf("/", strippedURLIndex + strippedURL.length - 1);
if (nextSlashIndex == -1) {
value = url.substr(strippedURLIndex);
} else {
value = url.substring(strippedURLIndex, nextSlashIndex + 1);
}
this._addAutofillMatch(
value,
strippedPrefix + value,
row.getResultByIndex(QUERYINDEX_URL_FRECENCY)
);
},
_addAutofillMatch(autofilledValue, finalCompleteValue, frecency = Infinity, extraStyles = []) {
// The match's comment is only for display. Set it to finalCompleteValue,
// the actual URL that will be visited when the user chooses the match, so
// that the user knows exactly where the match will take them. To make it
// look a little nicer, remove "http://", and if the user typed a host
// without a trailing slash, remove any trailing slash, too.
let comment = stripHttpAndTrim(finalCompleteValue,
!this._searchString.includes("/"));
this._addMatch({
value: this._strippedPrefix + autofilledValue,
finalCompleteValue,
comment,
frecency,
style: ["autofill"].concat(extraStyles).join(" "),
icon: iconHelper(finalCompleteValue),
});
},
// This is the same as _addFilteredQueryMatch, but it only returns a few
// results, caching the others. If at the end we don't find other results, we
// can add these.
_addAdaptiveQueryMatch(row) {
// Allow one quarter of the results to be adaptive results.
// Note: ideally adaptive results should have their own provider and the
// results muxer should decide what to show. But that's too complex to
// support in the current code, so that's left for a future refactoring.
if (this._adaptiveCount < Math.ceil(this._maxResults / 4)) {
this._addFilteredQueryMatch(row);
} else {
this._extraAdaptiveRows.push(row);
}
this._adaptiveCount++;
},
_addFilteredQueryMatch(row) {
let match = {};
match.placeId = row.getResultByIndex(QUERYINDEX_PLACEID);
let escapedURL = row.getResultByIndex(QUERYINDEX_URL);
let openPageCount = row.getResultByIndex(QUERYINDEX_SWITCHTAB) || 0;
let historyTitle = row.getResultByIndex(QUERYINDEX_TITLE) || "";
let bookmarked = row.getResultByIndex(QUERYINDEX_BOOKMARKED);
let bookmarkTitle = bookmarked ?
row.getResultByIndex(QUERYINDEX_BOOKMARKTITLE) : null;
let tags = row.getResultByIndex(QUERYINDEX_TAGS) || "";
let frecency = row.getResultByIndex(QUERYINDEX_FRECENCY);
// If actions are enabled and the page is open, add only the switch-to-tab
// result. Otherwise, add the normal result.
let url = escapedURL;
let action = null;
if (this._enableActions && openPageCount > 0 && this.hasBehavior("openpage")) {
url = PlacesUtils.mozActionURI("switchtab", {url: escapedURL});
action = "switchtab";
if (frecency == null)
frecency = FRECENCY_DEFAULT;
}
// Always prefer the bookmark title unless it is empty
let title = bookmarkTitle || historyTitle;
// Return tags as part of the title, unless the match has an action, like
// switch-to-tab, that doesn't care about them.
let showTags = !!tags && !action;
// We'll act as if the page is not bookmarked when the user wants
// only history and not bookmarks and there are no tags.
if (this.hasBehavior("history") && !this.hasBehavior("bookmark") &&
!showTags) {
showTags = false;
match.style = "favicon";
}
// If we have tags and should show them, we need to add them to the title.
if (showTags) {
title += TITLE_TAGS_SEPARATOR + tags;
}
// We have to determine the right style to display. Tags show the tag icon,
// bookmarks get the bookmark icon, and keywords get the keyword icon. If
// the result does not fall into any of those, it just gets the favicon.
if (!match.style) {
// It is possible that we already have a style set (from a keyword
// search or because of the user's preferences), so only set it if we
// haven't already done so.
if (showTags) {
// If we're not suggesting bookmarks, then this shouldn't
// display as one.
match.style = this.hasBehavior("bookmark") ? "bookmark-tag" : "tag";
} else if (bookmarked) {
match.style = "bookmark";
}
}
if (action)
match.style = "action " + action;
match.value = url;
match.comment = title;
match.icon = iconHelper(escapedURL);
match.frecency = frecency;
this._addMatch(match);
},
/**
* @return a string consisting of the search query to be used based on the
* previously set urlbar suggestion preferences.
*/
get _suggestionPrefQuery() {
if (!this.hasBehavior("restrict") && this.hasBehavior("history") &&
this.hasBehavior("bookmark")) {
return defaultQuery();
}
let conditions = [];
if (this.hasBehavior("history")) {
// Enforce ignoring the visit_count index, since the frecency one is much
// faster in this case. ANALYZE helps the query planner to figure out the
// faster path, but it may not have up-to-date information yet.
conditions.push("+h.visit_count > 0");
}
if (this.hasBehavior("bookmark")) {
conditions.push("bookmarked");
}
if (this.hasBehavior("tag")) {
conditions.push("tags NOTNULL");
}
return conditions.length ? defaultQuery("AND " + conditions.join(" AND "))
: defaultQuery();
},
/**
* Get the search string with the keyword substitution applied.
* If the user-provided string starts with a keyword that gave a heuristic
* result, it can provide a substitute string (e.g. the domain that keyword
* will search) so that the history/bookmark results we show will correspond
* to the keyword search rather than searching for the literal keyword.
*/
get _keywordSubstitutedSearchString() {
let tokens = this._searchTokens.map(t => t.value);
if (this._keywordSubstitute) {
tokens = [this._keywordSubstitute, ...tokens.slice(1)];
}
return tokens.join(" ");
},
/**
* Obtains the search query to be used based on the previously set search
* preferences (accessed by this.hasBehavior).
*
* @return an array consisting of the correctly optimized query to search the
* database with and an object containing the params to bound.
*/
get _searchQuery() {
let query = this._suggestionPrefQuery;
return [
query,
{
parent: PlacesUtils.tagsFolderId,
query_type: QUERYTYPE_FILTERED,
matchBehavior: this._matchBehavior,
searchBehavior: this._behavior,
// We only want to search the tokens that we are left with - not the
// original search string.
searchString: this._keywordSubstitutedSearchString,
userContextId: this._userContextId,
// Limit the query to the the maximum number of desired results.
// This way we can avoid doing more work than needed.
maxResults: this._maxResults,
},
];
},
/**
* Obtains the query to search for switch-to-tab entries.
*
* @return an array consisting of the correctly optimized query to search the
* database with and an object containing the params to bound.
*/
get _switchToTabQuery() {
return [
SQL_SWITCHTAB_QUERY,
{
query_type: QUERYTYPE_FILTERED,
matchBehavior: this._matchBehavior,
searchBehavior: this._behavior,
// We only want to search the tokens that we are left with - not the
// original search string.
searchString: this._keywordSubstitutedSearchString,
userContextId: this._userContextId,
maxResults: this._maxResults,
},
];
},
/**
* Obtains the query to search for adaptive results.
*
* @return an array consisting of the correctly optimized query to search the
* database with and an object containing the params to bound.
*/
get _adaptiveQuery() {
return [
SQL_ADAPTIVE_QUERY,
{
parent: PlacesUtils.tagsFolderId,
search_string: this._searchString,
query_type: QUERYTYPE_ADAPTIVE,
matchBehavior: this._matchBehavior,
searchBehavior: this._behavior,
userContextId: this._userContextId,
maxResults: this._maxResults,
},
];
},
/**
* Whether we should try to autoFill.
*/
get _shouldAutofill() {
// First of all, check for the autoFill pref.
if (!UrlbarPrefs.get("autoFill"))
return false;
if (this._searchTokens.length != 1)
return false;
// autoFill can only cope with history, bookmarks, and about: entries.
if (!this.hasBehavior("history") &&
!this.hasBehavior("bookmark"))
return false;
// autoFill doesn't search titles or tags.
if (this.hasBehavior("title") || this.hasBehavior("tag"))
return false;
// Don't try to autofill if the search term includes any whitespace.
// This may confuse completeDefaultIndex cause the AUTOCOMPLETE_MATCH
// tokenizer ends up trimming the search string and returning a value
// that doesn't match it, or is even shorter.
if (REGEXP_SPACES.test(this._originalSearchString))
return false;
if (this._searchString.length == 0)
return false;
if (this._prohibitAutoFill)
return false;
return true;
},
/**
* Obtains the query to search for autofill origin results.
*
* @return an array consisting of the correctly optimized query to search the
* database with and an object containing the params to bound.
*/
get _originQuery() {
// At this point, _searchString is not a URL with a path; it does not
// contain a slash, except for possibly at the very end. If there is
// trailing slash, remove it when searching here to match the rest of the
// string because it may be an origin.
let searchStr =
this._searchString.endsWith("/") ?
this._searchString.slice(0, -1) :
this._searchString;
let opts = {
query_type: QUERYTYPE_AUTOFILL_ORIGIN,
searchString: searchStr.toLowerCase(),
stddevMultiplier: UrlbarPrefs.get("autoFill.stddevMultiplier"),
};
let bookmarked = this.hasBehavior("bookmark") &&
!this.hasBehavior("history");
if (this._strippedPrefix) {
opts.prefix = this._strippedPrefix;
if (bookmarked) {
return [SQL_ORIGIN_PREFIX_BOOKMARKED_QUERY, opts];
}
return [SQL_ORIGIN_PREFIX_QUERY, opts];
}
if (bookmarked) {
return [SQL_ORIGIN_BOOKMARKED_QUERY, opts];
}
return [SQL_ORIGIN_QUERY, opts];
},
/**
* Obtains the query to search for autoFill url results.
*
* @return an array consisting of the correctly optimized query to search the
* database with and an object containing the params to bound.
*/
get _urlQuery() {
// Try to get the host from the search string. The host is the part of the
// URL up to either the path slash, port colon, or query "?". If the search
// string doesn't look like it begins with a host, then return; it doesn't
// make sense to do a URL query with it.
if (!this._urlQueryHostRegexp) {
this._urlQueryHostRegexp = /^[^/:?]+/;
}
let hostMatch = this._urlQueryHostRegexp.exec(this._searchString);
if (!hostMatch) {
return [null, null];
}
let host = hostMatch[0].toLowerCase();
let revHost = host.split("").reverse().join("") + ".";
// Build a string that's the URL stripped of its prefix, i.e., the host plus
// everything after the host. Use _trimmedOriginalSearchString instead of
// this._searchString because this._searchString has had unEscapeURIForUI()
// called on it. It's therefore not necessarily the literal URL.
let strippedURL = this._trimmedOriginalSearchString;
if (this._strippedPrefix) {
strippedURL = strippedURL.substr(this._strippedPrefix.length);
}
strippedURL = host + strippedURL.substr(host.length);
let opts = {
query_type: QUERYTYPE_AUTOFILL_URL,
revHost,
strippedURL,
};
let bookmarked = this.hasBehavior("bookmark") &&
!this.hasBehavior("history");
if (this._strippedPrefix) {
opts.prefix = this._strippedPrefix;
if (bookmarked) {
return [SQL_URL_PREFIX_BOOKMARKED_QUERY, opts];
}
return [SQL_URL_PREFIX_QUERY, opts];
}
if (bookmarked) {
return [SQL_URL_BOOKMARKED_QUERY, opts];
}
return [SQL_URL_QUERY, opts];
},
// The result is notified to the search listener on a timer, to chunk multiple
// match updates together and avoid rebuilding the popup at every new match.
_notifyTimer: null,
/**
* Notifies the current result to the listener.
*
* @param searchOngoing
* Indicates whether the search result should be marked as ongoing.
* @param skipDelay
* Whether to notify immediately.
*/
_notifyDelaysCount: 0,
notifyResult(searchOngoing, skipDelay = false) {
let notify = () => {
if (!this.pending)
return;
this._notifyDelaysCount = 0;
let resultCode = this._currentMatchCount ? "RESULT_SUCCESS" : "RESULT_NOMATCH";
if (searchOngoing) {
resultCode += "_ONGOING";
}
let result = this._result;
result.setSearchResult(Ci.nsIAutoCompleteResult[resultCode]);
this._listener.onSearchResult(this._autocompleteSearch, result);
if (!searchOngoing) {
// Break possible cycles.
this._listener = null;
this._autocompleteSearch = null;
this.stop();
}
};
if (this._notifyTimer) {
this._notifyTimer.cancel();
}
// In the worst case, we may get evenly spaced matches that would end up
// delaying the UI by N_MATCHES * NOTIFYRESULT_DELAY_MS. Thus, we clamp the
// number of times we may delay matches.
if (skipDelay || this._notifyDelaysCount > 3) {
notify();
} else {
this._notifyDelaysCount++;
this._notifyTimer = setTimeout(notify, NOTIFYRESULT_DELAY_MS);
}
},
};
// UnifiedComplete class
// component @mozilla.org/autocomplete/search;1?name=unifiedcomplete
function UnifiedComplete() {
if (UrlbarPrefs.get("usepreloadedtopurls.enabled")) {
// force initializing the profile age check
// to ensure the off-main-thread-IO happens ASAP
// and we don't have to wait for it when doing an autocomplete lookup
ProfileAgeCreatedPromise;
fetch("chrome://global/content/unifiedcomplete-top-urls.json")
.then(response => response.json())
.then(sites => PreloadedSiteStorage.populate(sites))
.catch(ex => Cu.reportError(ex));
}
}
UnifiedComplete.prototype = {
// Database handling
/**
* Promise resolved when the database initialization has completed, or null
* if it has never been requested.
*/
_promiseDatabase: null,
/**
* Gets a Sqlite database handle.
*
* @return {Promise}
* @resolves to the Sqlite database handle (according to Sqlite.jsm).
* @rejects javascript exception.
*/
getDatabaseHandle() {
if (!this._promiseDatabase) {
this._promiseDatabase = (async () => {
let conn = await PlacesUtils.promiseLargeCacheDBConnection();
try {
Sqlite.shutdown.addBlocker("Places UnifiedComplete.js closing",
() => {
// Break a possible cycle through the
// previous result, the controller and
// ourselves.
this._currentSearch = null;
});
} catch (ex) {
// It's too late to block shutdown.
throw ex;
}
await UrlbarProviderOpenTabs.promiseDb();
return conn;
})().catch(ex => {
dump("Couldn't get database handle: " + ex + "\n");
Cu.reportError(ex);
});
}
return this._promiseDatabase;
},
// mozIPlacesAutoComplete
populatePreloadedSiteStorage(json) {
PreloadedSiteStorage.populate(json);
},
// nsIAutoCompleteSearch
startSearch(searchString, searchParam, acPreviousResult, listener) {
// Stop the search in case the controller has not taken care of it.
if (this._currentSearch) {
this.stopSearch();
}
// If the previous search didn't fetch enough search suggestions, it's
// unlikely a longer text would do.
let prohibitSearchSuggestions =
!!this._lastLowResultsSearchSuggestion &&
searchString.length > this._lastLowResultsSearchSuggestion.length &&
searchString.startsWith(this._lastLowResultsSearchSuggestion);
// We don't directly reuse the controller provided previousResult because:
// * it is only populated when the new searchString is an extension of the
// previous one. We want to handle the backspace case too.
// * Bookmarks may be titled differently than history and we want to show
// the right title. For example a "foo" titled page could be bookmarked
// as "foox", typing "foo" followed by "x" would show the history result
// from the previous search (See bug 412730).
// * Adaptive History means a result may appear even if the previous string
// didn't match it.
// What we can do is reuse the previous result along with the bucketing
// system to avoid flickering. Since we know where a new match should be
// positioned, we wait for a new match to arrive before replacing the
// previous one. This may leave stale matches from the previous search that
// would not be returned by the current one, thus once the current search is
// complete, we remove those stale matches with _cleanUpNonCurrentMatches().
// Extract the insert-method param if it exists.
let insertMethod = searchParam.match(REGEXP_INSERT_METHOD);
insertMethod = insertMethod ? parseInt(insertMethod[1])
: UrlbarPrefs.get("insertMethod");
let previousResult = null;
if (this._currentSearch && insertMethod != UrlbarUtils.INSERTMETHOD.APPEND) {
let result = this._currentSearch._result;
// Only reuse the previous result when one of the search strings is an
// extension of the other one. We could expand this to any case, but
// that may leave exposed unrelated matches for a longer time.
let previousSearchString = result.searchString;
let stringsRelated = previousSearchString.length > 0 &&
searchString.length > 0 &&
(previousSearchString.includes(searchString) ||
searchString.includes(previousSearchString));
if (insertMethod == UrlbarUtils.INSERTMETHOD.MERGE || stringsRelated) {
previousResult = result;
}
}
let search = this._currentSearch = new Search(searchString, searchParam,
listener, this,
prohibitSearchSuggestions,
previousResult);
this.getDatabaseHandle().then(conn => search.execute(conn))
.catch(ex => {
dump(`Query failed: ${ex}\n`);
Cu.reportError(ex);
})
.then(() => {
if (search == this._currentSearch) {
this.finishSearch(true);
}
});
},
stopSearch() {
if (this._currentSearch) {
this._currentSearch.stop();
}
// Don't notify since we are canceling this search. This also means we
// won't fire onSearchComplete for this search.
this.finishSearch();
},
/**
* Properly cleans up when searching is completed.
*
* @param notify [optional]
* Indicates if we should notify the AutoComplete listener about our
* results or not.
*/
finishSearch(notify = false) {
if (!this._disableTelemetry) {
TelemetryStopwatch.cancel(TELEMETRY_1ST_RESULT, this);
TelemetryStopwatch.cancel(TELEMETRY_6_FIRST_RESULTS, this);
}
// Clear state now to avoid race conditions, see below.
let search = this._currentSearch;
if (!search)
return;
this._lastLowResultsSearchSuggestion = search._lastLowResultsSearchSuggestion;
if (!notify || !search.pending)
return;
// If we are in restrict mode and we reused the previous search results,
// it's possible we didn't go through all the cleanup methods due to early
// bailouts. Thus we could still have nonmatching results to remove.
search.cleanUpRestrictNonCurrentMatches();
// There is a possible race condition here.
// When a search completes it calls finishSearch that notifies results
// here. When the controller gets the last result it fires
// onSearchComplete.
// If onSearchComplete immediately starts a new search it will set a new
// _currentSearch, and on return the execution will continue here, after
// notifyResult.
// Thus, ensure that notifyResult is the last call in this method,
// otherwise you might be touching the wrong search.
search.notifyResult(false);
},
// nsIAutoCompleteSearchDescriptor
get searchType() {
return Ci.nsIAutoCompleteSearchDescriptor.SEARCH_TYPE_IMMEDIATE;
},
get clearingAutoFillSearchesAgain() {
return true;
},
// nsISupports
classID: Components.ID("f964a319-397a-4d21-8be6-5cdd1ee3e3ae"),
QueryInterface: ChromeUtils.generateQI([
Ci.nsIAutoCompleteSearch,
Ci.nsIAutoCompleteSearchDescriptor,
Ci.mozIPlacesAutoComplete,
Ci.nsIObserver,
Ci.nsISupportsWeakReference,
]),
};
var EXPORTED_SYMBOLS = ["UnifiedComplete"];