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Diffstat (limited to '')
| -rw-r--r-- | browser/components/urlbar/UrlbarProviderPlaces.sys.mjs | 1581 |
1 files changed, 1581 insertions, 0 deletions
diff --git a/browser/components/urlbar/UrlbarProviderPlaces.sys.mjs b/browser/components/urlbar/UrlbarProviderPlaces.sys.mjs new file mode 100644 index 0000000000..f6704fc13f --- /dev/null +++ b/browser/components/urlbar/UrlbarProviderPlaces.sys.mjs @@ -0,0 +1,1581 @@ +/* -*- 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", 53] */ + +/** + * This module exports a provider that provides results from the Places + * database, including history, bookmarks, and open tabs. + */ +// Constants + +// AutoComplete query type constants. +// Describes the various types of queries that we can process rows for. +const QUERYTYPE_FILTERED = 0; + +// The default frecency value used when inserting matches with unknown frecency. +const FRECENCY_DEFAULT = 1000; + +// 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; + +// 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, NULL) + ELSE + AUTOCOMPLETE_MATCH(:searchString, h.url, + h.title, '', + h.visit_count, h.typed, + 0, t.open_count, + :matchBehavior, :searchBehavior, NULL) + END + ${conditions ? "AND" : ""} ${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, NULL) + ORDER BY t.ROWID DESC + LIMIT :maxResults`; + +// Getters + +import { XPCOMUtils } from "resource://gre/modules/XPCOMUtils.sys.mjs"; + +import { + UrlbarProvider, + UrlbarUtils, +} from "resource:///modules/UrlbarUtils.sys.mjs"; + +const lazy = {}; + +ChromeUtils.defineESModuleGetters(lazy, { + KeywordUtils: "resource://gre/modules/KeywordUtils.sys.mjs", + PlacesUtils: "resource://gre/modules/PlacesUtils.sys.mjs", + PromiseUtils: "resource://gre/modules/PromiseUtils.sys.mjs", + Sqlite: "resource://gre/modules/Sqlite.sys.mjs", + UrlbarPrefs: "resource:///modules/UrlbarPrefs.sys.mjs", + UrlbarProviderOpenTabs: "resource:///modules/UrlbarProviderOpenTabs.sys.mjs", + UrlbarProvidersManager: "resource:///modules/UrlbarProvidersManager.sys.mjs", + UrlbarResult: "resource:///modules/UrlbarResult.sys.mjs", + UrlbarSearchUtils: "resource:///modules/UrlbarSearchUtils.sys.mjs", + UrlbarTokenizer: "resource:///modules/UrlbarTokenizer.sys.mjs", +}); + +XPCOMUtils.defineLazyModuleGetters(lazy, { + ObjectUtils: "resource://gre/modules/ObjectUtils.jsm", +}); + +function setTimeout(callback, ms) { + let timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer); + timer.initWithCallback(callback, ms, timer.TYPE_ONE_SHOT); + return timer; +} + +// Maps restriction character types to textual behaviors. +XPCOMUtils.defineLazyGetter(lazy, "typeToBehaviorMap", () => { + return new Map([ + [lazy.UrlbarTokenizer.TYPE.RESTRICT_HISTORY, "history"], + [lazy.UrlbarTokenizer.TYPE.RESTRICT_BOOKMARK, "bookmark"], + [lazy.UrlbarTokenizer.TYPE.RESTRICT_TAG, "tag"], + [lazy.UrlbarTokenizer.TYPE.RESTRICT_OPENPAGE, "openpage"], + [lazy.UrlbarTokenizer.TYPE.RESTRICT_SEARCH, "search"], + [lazy.UrlbarTokenizer.TYPE.RESTRICT_TITLE, "title"], + [lazy.UrlbarTokenizer.TYPE.RESTRICT_URL, "url"], + ]); +}); + +XPCOMUtils.defineLazyGetter(lazy, "sourceToBehaviorMap", () => { + return new Map([ + [UrlbarUtils.RESULT_SOURCE.HISTORY, "history"], + [UrlbarUtils.RESULT_SOURCE.BOOKMARKS, "bookmark"], + [UrlbarUtils.RESULT_SOURCE.TABS, "openpage"], + [UrlbarUtils.RESULT_SOURCE.SEARCH, "search"], + ]); +}); + +// Helper functions + +/** + * 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) { + let key, prefix; + let action = lazy.PlacesUtils.parseActionUrl(match.value); + if (!action) { + [key, prefix] = UrlbarUtils.stripPrefixAndTrim(match.value, { + stripHttp: true, + stripHttps: true, + stripWww: true, + trimSlash: true, + trimEmptyQuery: true, + trimEmptyHash: true, + }); + return [key, prefix, null]; + } + + 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, prefix] = UrlbarUtils.stripPrefixAndTrim( + action.params.url || match.value, + { + stripHttp: true, + stripHttps: true, + stripWww: true, + trimEmptyQuery: true, + trimSlash: true, + } + ); + break; + } + + return [key, prefix, action]; +} + +/** + * Makes a moz-action url for the given action and set of parameters. + * + * @param {string} type + * The action type. + * @param {object} params + * A JS object of action params. + * @returns {string} A moz-action url as a string. + */ +function makeActionUrl(type, params) { + let encodedParams = {}; + for (let key in params) { + // Strip null or undefined. + // Regardless, don't encode them or they would be converted to a string. + if (params[key] === null || params[key] === undefined) { + continue; + } + encodedParams[key] = encodeURIComponent(params[key]); + } + return `moz-action:${type},${JSON.stringify(encodedParams)}`; +} + +/** + * Converts an array of legacy match objects into UrlbarResults. + * Note that at every call we get the full set of results, included the + * previously returned ones, and new results may be inserted in the middle. + * This means we could sort these wrongly, the muxer should take care of it. + * + * @param {UrlbarQueryContext} context the query context. + * @param {Array} matches The match objects. + * @param {set} urls a Set containing all the found urls, used to discard + * already added results. + * @returns {Array} converted results + */ +function convertLegacyMatches(context, matches, urls) { + let results = []; + for (let match of matches) { + // First, let's check if we already added this result. + // `matches` always contains all of the results, includes ones + // we may have added already. This means we'll end up adding things in the + // wrong order here, but that's a task for the UrlbarMuxer. + let url = match.finalCompleteValue || match.value; + if (urls.has(url)) { + continue; + } + urls.add(url); + let result = makeUrlbarResult(context.tokens, { + url, + // `match.icon` is an empty string if there is no icon. Use undefined + // instead so that tests can be simplified by not including `icon: ""` in + // all their payloads. + icon: match.icon || undefined, + style: match.style, + comment: match.comment, + firstToken: context.tokens[0], + }); + // Should not happen, but better safe than sorry. + if (!result) { + continue; + } + + results.push(result); + } + return results; +} + +/** + * Creates a new UrlbarResult from the provided data. + * + * @param {Array} tokens the search tokens. + * @param {object} info includes properties from the legacy result. + * @returns {object} an UrlbarResult + */ +function makeUrlbarResult(tokens, info) { + let action = lazy.PlacesUtils.parseActionUrl(info.url); + if (action) { + switch (action.type) { + case "searchengine": { + if (action.params.isSearchHistory) { + // Return a form history result. + return new lazy.UrlbarResult( + UrlbarUtils.RESULT_TYPE.SEARCH, + UrlbarUtils.RESULT_SOURCE.HISTORY, + ...lazy.UrlbarResult.payloadAndSimpleHighlights(tokens, { + engine: action.params.engineName, + suggestion: [ + action.params.searchSuggestion, + UrlbarUtils.HIGHLIGHT.SUGGESTED, + ], + lowerCaseSuggestion: action.params.searchSuggestion.toLocaleLowerCase(), + }) + ); + } + + return new lazy.UrlbarResult( + UrlbarUtils.RESULT_TYPE.SEARCH, + UrlbarUtils.RESULT_SOURCE.SEARCH, + ...lazy.UrlbarResult.payloadAndSimpleHighlights(tokens, { + engine: [action.params.engineName, UrlbarUtils.HIGHLIGHT.TYPED], + suggestion: [ + action.params.searchSuggestion, + UrlbarUtils.HIGHLIGHT.SUGGESTED, + ], + lowerCaseSuggestion: action.params.searchSuggestion?.toLocaleLowerCase(), + keyword: action.params.alias, + query: [ + action.params.searchQuery.trim(), + UrlbarUtils.HIGHLIGHT.NONE, + ], + icon: info.icon, + }) + ); + } + case "switchtab": + return new lazy.UrlbarResult( + UrlbarUtils.RESULT_TYPE.TAB_SWITCH, + UrlbarUtils.RESULT_SOURCE.TABS, + ...lazy.UrlbarResult.payloadAndSimpleHighlights(tokens, { + url: [action.params.url, UrlbarUtils.HIGHLIGHT.TYPED], + title: [info.comment, UrlbarUtils.HIGHLIGHT.TYPED], + icon: info.icon, + }) + ); + case "visiturl": + return new lazy.UrlbarResult( + UrlbarUtils.RESULT_TYPE.URL, + UrlbarUtils.RESULT_SOURCE.OTHER_LOCAL, + ...lazy.UrlbarResult.payloadAndSimpleHighlights(tokens, { + title: [info.comment, UrlbarUtils.HIGHLIGHT.TYPED], + url: [action.params.url, UrlbarUtils.HIGHLIGHT.TYPED], + icon: info.icon, + }) + ); + default: + Cu.reportError(`Unexpected action type: ${action.type}`); + return null; + } + } + + // This is a normal url/title tuple. + let source; + let tags = []; + let comment = info.comment; + + // The legacy autocomplete result may return "bookmark", "bookmark-tag" or + // "tag". In the last case it should not be considered a bookmark, but an + // history item with tags. We don't show tags for non bookmarked items though. + if (info.style.includes("bookmark")) { + source = UrlbarUtils.RESULT_SOURCE.BOOKMARKS; + } else { + source = UrlbarUtils.RESULT_SOURCE.HISTORY; + } + + // If the style indicates that the result is tagged, then the tags are + // included in the title, and we must extract them. + if (info.style.includes("tag")) { + [comment, tags] = info.comment.split(UrlbarUtils.TITLE_TAGS_SEPARATOR); + + // However, as mentioned above, we don't want to show tags for non- + // bookmarked items, so we include tags in the final result only if it's + // bookmarked, and we drop the tags otherwise. + if (source != UrlbarUtils.RESULT_SOURCE.BOOKMARKS) { + tags = ""; + } + + // Tags are separated by a comma and in a random order. + // We should also just include tags that match the searchString. + tags = tags + .split(",") + .map(t => t.trim()) + .filter(tag => { + let lowerCaseTag = tag.toLocaleLowerCase(); + return tokens.some(token => + lowerCaseTag.includes(token.lowerCaseValue) + ); + }) + .sort(); + } + + return new lazy.UrlbarResult( + UrlbarUtils.RESULT_TYPE.URL, + source, + ...lazy.UrlbarResult.payloadAndSimpleHighlights(tokens, { + url: [info.url, UrlbarUtils.HIGHLIGHT.TYPED], + icon: info.icon, + title: [comment, UrlbarUtils.HIGHLIGHT.TYPED], + tags: [tags, UrlbarUtils.HIGHLIGHT.TYPED], + }) + ); +} + +const MATCH_TYPE = { + HEURISTIC: "heuristic", + GENERAL: "general", + SUGGESTION: "suggestion", + EXTENSION: "extension", +}; + +/** + * Manages a single instance of a Places search. + * + * @param {UrlbarQueryContext} queryContext + * The query context. + * @param {Function} listener + * Called as: `listener(matches, searchOngoing)` + * @param {PlacesProvider} provider + * The singleton that contains Places information + */ +function Search(queryContext, listener, provider) { + // We want to store the original string for case sensitive searches. + this._originalSearchString = queryContext.searchString; + this._trimmedOriginalSearchString = queryContext.trimmedSearchString; + let unescapedSearchString = UrlbarUtils.unEscapeURIForUI( + this._trimmedOriginalSearchString + ); + // We want to make sure "about:" is not stripped as a prefix so that the + // about pages provider will run and ultimately only suggest about pages when + // a user types "about:" into the address bar. + let prefix, suffix; + if (unescapedSearchString.startsWith("about:")) { + prefix = ""; + suffix = unescapedSearchString; + } else { + [prefix, suffix] = UrlbarUtils.stripURLPrefix(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 + ? lazy.UrlbarPrefs.get("defaultBehavior") + : this._emptySearchDefaultBehavior; + + this._inPrivateWindow = queryContext.isPrivate; + this._prohibitAutoFill = !queryContext.allowAutofill; + this._maxResults = queryContext.maxResults; + this._userContextId = queryContext.userContextId; + this._currentPage = queryContext.currentPage; + this._searchModeEngine = queryContext.searchMode?.engineName; + this._searchMode = queryContext.searchMode; + if (this._searchModeEngine) { + // Filter Places results on host. + let engine = Services.search.getEngineByName(this._searchModeEngine); + this._filterOnHost = engine.getResultDomain(); + } + + this._userContextId = lazy.UrlbarProviderOpenTabs.getUserContextIdForOpenPagesTable( + this._userContextId, + this._inPrivateWindow + ); + + // Use the original string here, not the stripped one, so the tokenizer can + // properly recognize token types. + let { tokens } = lazy.UrlbarTokenizer.tokenize({ + searchString: unescapedSearchString, + trimmedSearchString: unescapedSearchString.trim(), + }); + + // This allows to handle leading or trailing restriction characters specially. + this._leadingRestrictionToken = null; + if (tokens.length) { + if ( + lazy.UrlbarTokenizer.isRestrictionToken(tokens[0]) && + (tokens.length > 1 || + tokens[0].type == lazy.UrlbarTokenizer.TYPE.RESTRICT_SEARCH) + ) { + this._leadingRestrictionToken = tokens[0].value; + } + + // Check if the first token has a strippable prefix other than "about:" + // and remove it, but don't create an empty token. We preserve "about:" + // so that the about pages provider will run and ultimately only suggest + // about pages when a user types "about:" into the address bar. + if ( + prefix && + prefix != "about:" && + tokens[0].value.length > prefix.length + ) { + tokens[0].value = tokens[0].value.substring(prefix.length); + } + } + + // Eventually filter restriction tokens. In general it's a good idea, but if + // the consumer requested search mode, we should use the full string to avoid + // ignoring valid tokens. + this._searchTokens = + !queryContext || queryContext.restrictToken + ? this.filterTokens(tokens) + : tokens; + + // The behavior can be set through: + // 1. a specific restrictSource in the QueryContext + // 2. typed restriction tokens + if ( + queryContext && + queryContext.restrictSource && + lazy.sourceToBehaviorMap.has(queryContext.restrictSource) + ) { + this._behavior = 0; + this.setBehavior("restrict"); + let behavior = lazy.sourceToBehaviorMap.get(queryContext.restrictSource); + this.setBehavior(behavior); + + // When we are in restrict mode, all the tokens are valid for searching, so + // there is no _heuristicToken. + this._heuristicToken = null; + } else { + // 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. + let firstToken = !!this._searchTokens.length && this._searchTokens[0].value; + this._heuristicToken = + firstToken && this._trimmedOriginalSearchString.startsWith(firstToken) + ? firstToken + : null; + } + + // 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 (!lazy.UrlbarPrefs.get("filter.javascript")) { + this.setBehavior("javascript"); + } + + this._listener = listener; + this._provider = provider; + this._matches = []; + + // These are used to avoid adding duplicate entries to the results. + this._usedURLs = []; + this._usedPlaceIds = new Set(); + + // Counters for the number of results per MATCH_TYPE. + this._counts = Object.values(MATCH_TYPE).reduce((o, p) => { + o[p] = 0; + return o; + }, {}); +} + +Search.prototype = { + /** + * Enables the desired AutoComplete behavior. + * + * @param {string} 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 {string} type + * The behavior type to test for. + * @returns {boolean} true if the behavior is set, false otherwise. + */ + hasBehavior(type) { + let behavior = Ci.mozIPlacesAutoComplete["BEHAVIOR_" + type.toUpperCase()]; + return this._behavior & behavior; + }, + + /** + * Given an array of tokens, this function determines which query should be + * ran. It also removes any special search tokens. + * + * @param {Array} tokens + * An array of search tokens. + * @returns {Array} 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 (!lazy.UrlbarTokenizer.isRestrictionToken(token)) { + filtered.push(token); + continue; + } + let behavior = lazy.typeToBehaviorMap.get(token.type); + if (!behavior) { + throw new Error(`Unknown token type ${token.type}`); + } + // 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); + // We return tags only for bookmarks, thus when tags are enforced, we + // must also set the bookmark behavior. + if (behavior == "tag") { + this.setBehavior("bookmark"); + } + } + 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 (typeof this.interrupt == "function") { + this.interrupt(); + } + this.pending = false; + }, + + /** + * Whether this search is active. + */ + pending: true, + + /** + * Execute the search and populate results. + * + * @param {mozIStorageAsyncConnection} 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 (!lazy.UrlbarProvidersManager.interruptLevel) { + conn.interrupt(); + } + }; + + // For any given search, we run these queries: + // 1) open pages not supported by history (this._switchToTabQuery) + // 2) query based on match behavior + + // If the query is simply "@" and we have tokenAliasEngines then return + // early. UrlbarProviderTokenAliasEngines will add engine results. + let tokenAliasEngines = await lazy.UrlbarSearchUtils.tokenAliasEngines(); + if (this._trimmedOriginalSearchString == "@" && tokenAliasEngines.length) { + this._provider.finishSearch(true); + return; + } + + // Check if the first token is an action. If it is, we should set a flag + // so we don't include it in our searches. + this._firstTokenIsKeyword = + this._firstTokenIsKeyword || (await this._checkIfFirstTokenIsKeyword()); + if (!this.pending) { + return; + } + + if (this._trimmedOriginalSearchString) { + // If the user typed the search restriction char or we're in + // search-restriction mode, then we're done. + // UrlbarProviderSearchSuggestions will handle suggestions, if any. + let emptySearchRestriction = + this._trimmedOriginalSearchString.length <= 3 && + this._leadingRestrictionToken == lazy.UrlbarTokenizer.RESTRICT.SEARCH && + /\s*\S?$/.test(this._trimmedOriginalSearchString); + if ( + emptySearchRestriction || + (tokenAliasEngines && + this._trimmedOriginalSearchString.startsWith("@")) || + (this.hasBehavior("search") && this.hasBehavior("restrict")) + ) { + this._provider.finishSearch(true); + return; + } + } + + // Run our standard Places query. + 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); + for (let [query, params] of queries) { + await conn.executeCached(query, params, this._onResultRow.bind(this)); + if (!this.pending) { + return; + } + } + + // If we do not have enough matches search again with MATCH_ANYWHERE, to + // get more matches. + let count = this._counts[MATCH_TYPE.GENERAL]; + if (count < this._maxResults) { + this._matchBehavior = Ci.mozIPlacesAutoComplete.MATCH_ANYWHERE; + queries = [this._searchQuery]; + if (this.hasBehavior("openpage")) { + queries.unshift(this._switchToTabQuery); + } + for (let [query, params] of queries) { + await conn.executeCached(query, params, this._onResultRow.bind(this)); + if (!this.pending) { + return; + } + } + } + }, + + async _checkIfFirstTokenIsKeyword() { + if (!this._heuristicToken) { + return false; + } + + let aliasEngine = await lazy.UrlbarSearchUtils.engineForAlias( + this._heuristicToken, + this._originalSearchString + ); + + if (aliasEngine) { + return true; + } + + let { entry } = await lazy.KeywordUtils.getBindableKeyword( + this._heuristicToken, + this._originalSearchString + ); + if (entry) { + this._filterOnHost = entry.url.host; + return true; + } + + return false; + }, + + /** + * Adds a search engine match. + * + * @param {object} options + * The options object. + * @param {nsISearchEngine} options.engine + * The search engine associated with the match. + * @param {string} [options.query] + * The search query string. + * @param {string} [options.alias] + * The search engine alias associated with the match, if any. + * @param {boolean} [options.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, + historical = false, + }) { + let actionURLParams = { + engineName: engine.name, + searchQuery: query, + }; + + 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 ? engine.iconURI.spec : null, + style: "action searchengine", + frecency: FRECENCY_DEFAULT, + }; + + if (alias) { + actionURLParams.alias = alias; + match.style += " alias"; + } + + match.value = makeActionUrl("searchengine", actionURLParams); + this._addMatch(match); + }, + + _onResultRow(row, cancel) { + let queryType = row.getResultByIndex(QUERYINDEX_QUERYTYPE); + switch (queryType) { + 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[MATCH_TYPE.GENERAL]; + if (!this.pending || count >= this._maxResults) { + cancel(); + } + }, + + /** + * Maybe restyle a SERP in history as a search-type result. To do this, + * we extract the search term from the SERP in history then generate a search + * URL with that search term. We restyle the SERP in history if its query + * parameters are a subset of those of the generated SERP. We check for a + * subset instead of exact equivalence since the generated URL may contain + * attribution parameters while a SERP in history from an organic search would + * not. We don't allow extra params in the history URL since they might + * indicate the search is not a first-page web SERP (as opposed to a image or + * other non-web SERP). + * + * Note: We will mistakenly dedupe SERPs for engines that have the same + * hostname as another engine. One example is if the user installed a + * Google Image Search engine. That engine's search URLs might only be + * distinguished by query params from search URLs from the default Google + * engine. + * + * @param {object} match + * The match to maybe restyle. + * @returns {boolean} True if the match can be restyled, false otherwise. + */ + _maybeRestyleSearchMatch(match) { + // Return if the URL does not represent a search result. + let historyUrl = match.value; + let parseResult = Services.search.parseSubmissionURL(historyUrl); + if (!parseResult?.engine) { + return false; + } + + // Here we check that the user typed all or part of the search string in the + // search history result. + let terms = parseResult.terms.toLowerCase(); + if ( + this._searchTokens.length && + this._searchTokens.every(token => !terms.includes(token.value)) + ) { + return false; + } + + // The URL for the search suggestion formed by the user's typed query. + let [generatedSuggestionUrl] = UrlbarUtils.getSearchQueryUrl( + parseResult.engine, + this._searchTokens.map(t => t.value).join(" ") + ); + + // We ignore termsParameterName when checking for a subset because we + // already checked that the typed query is a subset of the search history + // query above with this._searchTokens.every(...). + if ( + !lazy.UrlbarSearchUtils.serpsAreEquivalent( + historyUrl, + generatedSuggestionUrl, + [parseResult.termsParameterName] + ) + ) { + return false; + } + + // Turn the match into a searchengine action with a favicon. + match.value = makeActionUrl("searchengine", { + engineName: parseResult.engine.name, + input: parseResult.terms, + searchSuggestion: parseResult.terms, + searchQuery: parseResult.terms, + isSearchHistory: true, + }); + match.comment = parseResult.engine.name; + match.icon = match.icon || match.iconUrl; + match.style = "action searchengine favicon suggestion"; + return true; + }, + + _addMatch(match) { + if (typeof match.frecency != "number") { + throw new Error("Frecency not provided"); + } + + if (typeof match.type != "string") { + match.type = MATCH_TYPE.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 ( + match.style == "favicon" && + (lazy.UrlbarPrefs.get("restyleSearches") || this._searchModeEngine) + ) { + let restyled = this._maybeRestyleSearchMatch(match); + if ( + restyled && + lazy.UrlbarPrefs.get("maxHistoricalSearchSuggestions") == 0 + ) { + // The user doesn't want search history. + return; + } + } + + 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._matches.splice(index, 1); + } + this._matches.splice(index, 0, match); + this._counts[match.type]++; + + this.notifyResult(true); + }, + + /** + * @typedef {object} MatchPositionInformation + * @property {number} index + * The index the match should take in the results. Return -1 if the match + * should be discarded. + * @property {boolean} replace + * True if the match should replace the result already at + * matchPosition.index. + */ + + /** + * Check for duplicates and either discard the duplicate or 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. + * We must check both id and url for duplication, because keywords may change + * the url by replacing the %s placeholder. + * + * @param {object} match + * The match to insert. + * @returns {MatchPositionInformation} + */ + _getInsertIndexForMatch(match) { + let [urlMapKey, prefix, action] = makeKeyForMatch(match); + if ( + (match.placeId && this._usedPlaceIds.has(match.placeId)) || + this._usedURLs.some(e => lazy.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 } = this._usedURLs[i]; + if (lazy.ObjectUtils.deepEqual(matchKey, urlMapKey)) { + isDupe = true; + if (!matchAction || action.type == "switchtab") { + this._usedURLs[i] = { + key: urlMapKey, + action, + type: match.type, + prefix, + comment: match.comment, + }; + return { index: i, replace: true }; + } + break; // Found the duplicate, no reason to continue. + } + } + } else { + // Dedupe with this flow: + // 1. If the two URLs are the same, dedupe the newer one. + // 2. If they both contain www. or both do not contain it, prefer https. + // 3. If they differ by www., send both results to the Muxer and allow + // it to decide based on results from other providers. + let prefixRank = UrlbarUtils.getPrefixRank(prefix); + for (let i = 0; i < this._usedURLs.length; ++i) { + if (!this._usedURLs[i]) { + // This is true when the result at [i] is a searchengine result. + continue; + } + + let { key: existingKey, prefix: existingPrefix } = this._usedURLs[i]; + + let existingPrefixRank = UrlbarUtils.getPrefixRank(existingPrefix); + if (lazy.ObjectUtils.deepEqual(existingKey, urlMapKey)) { + isDupe = true; + + if (prefix == existingPrefix) { + // The URLs are identical. Throw out the new result. + break; + } + + if (prefix.endsWith("www.") == existingPrefix.endsWith("www.")) { + // The results differ only by protocol. + if (prefixRank <= existingPrefixRank) { + break; // Replace match. + } else { + this._usedURLs[i] = { + key: urlMapKey, + action, + type: match.type, + prefix, + comment: match.comment, + }; + return { index: i, replace: true }; + } + } else { + // We have two identical URLs that differ only by www. We need to + // be sure what the heuristic result is before deciding how we + // should dedupe. We mark these as non-duplicates and let the + // muxer handle it. + isDupe = false; + continue; + } + } + } + } + + // Discard the duplicate. + 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; + if (!this._groups) { + this._groups = []; + this._makeGroups(lazy.UrlbarPrefs.get("resultGroups"), this._maxResults); + } + + let replace = 0; + for (let group of this._groups) { + // Move to the next group if the match type is incompatible, or if there + // is no available space or if the frecency is below the threshold. + if (match.type != group.type || !group.available) { + index += group.count; + continue; + } + + index += group.insertIndex; + group.available--; + if (group.insertIndex < group.count) { + replace = true; + } else { + group.count++; + } + group.insertIndex++; + break; + } + this._usedURLs[index] = { + key: urlMapKey, + action, + type: match.type, + prefix, + comment: match.comment || "", + }; + return { index, replace }; + }, + + _makeGroups(resultGroup, maxResultCount) { + if (!resultGroup.children) { + let type; + switch (resultGroup.group) { + case UrlbarUtils.RESULT_GROUP.FORM_HISTORY: + case UrlbarUtils.RESULT_GROUP.REMOTE_SUGGESTION: + case UrlbarUtils.RESULT_GROUP.TAIL_SUGGESTION: + type = MATCH_TYPE.SUGGESTION; + break; + case UrlbarUtils.RESULT_GROUP.HEURISTIC_AUTOFILL: + case UrlbarUtils.RESULT_GROUP.HEURISTIC_EXTENSION: + case UrlbarUtils.RESULT_GROUP.HEURISTIC_FALLBACK: + case UrlbarUtils.RESULT_GROUP.HEURISTIC_OMNIBOX: + case UrlbarUtils.RESULT_GROUP.HEURISTIC_SEARCH_TIP: + case UrlbarUtils.RESULT_GROUP.HEURISTIC_TEST: + case UrlbarUtils.RESULT_GROUP.HEURISTIC_TOKEN_ALIAS_ENGINE: + type = MATCH_TYPE.HEURISTIC; + break; + case UrlbarUtils.RESULT_GROUP.OMNIBOX: + type = MATCH_TYPE.EXTENSION; + break; + default: + type = MATCH_TYPE.GENERAL; + break; + } + if (this._groups.length) { + let last = this._groups[this._groups.length - 1]; + if (last.type == type) { + return; + } + } + // - `available` is the number of available slots in the group + // - `insertIndex` is the index of the first available slot in the group + // - `count` is the number of matches in the group, note that it also + // accounts for matches from the previous search, while `available` and + // `insertIndex` don't. + this._groups.push({ + type, + available: maxResultCount, + insertIndex: 0, + count: 0, + }); + return; + } + + let initialMaxResultCount; + if (typeof resultGroup.maxResultCount == "number") { + initialMaxResultCount = resultGroup.maxResultCount; + } else if (typeof resultGroup.availableSpan == "number") { + initialMaxResultCount = resultGroup.availableSpan; + } else { + initialMaxResultCount = this._maxResults; + } + let childMaxResultCount = Math.min(initialMaxResultCount, maxResultCount); + for (let child of resultGroup.children) { + this._makeGroups(child, childMaxResultCount); + } + }, + + _addFilteredQueryMatch(row) { + let placeId = row.getResultByIndex(QUERYINDEX_PLACEID); + let url = 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); + + let match = { + placeId, + value: url, + comment: bookmarkTitle || historyTitle, + icon: UrlbarUtils.getIconForUrl(url), + frecency: frecency || FRECENCY_DEFAULT, + }; + + if (openPageCount > 0 && this.hasBehavior("openpage")) { + if (this._currentPage == match.value) { + // Don't suggest switching to the current tab. + return; + } + // Actions are enabled and the page is open. Add a switch-to-tab result. + match.value = makeActionUrl("switchtab", { url: match.value }); + match.style = "action switchtab"; + } else if ( + this.hasBehavior("history") && + !this.hasBehavior("bookmark") && + !tags + ) { + // The consumer wants only history and not bookmarks and there are no + // tags. We'll act as if the page is not bookmarked. + match.style = "favicon"; + } else if (tags) { + // Store the tags in the title. It's up to the consumer to extract them. + match.comment += UrlbarUtils.TITLE_TAGS_SEPARATOR + tags; + // 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"; + } + + this._addMatch(match); + }, + + /** + * @returns {string} + * A string consisting of the search query to be used based on the previously + * set urlbar suggestion preferences. + */ + get _suggestionPrefQuery() { + let conditions = []; + if (this._filterOnHost) { + conditions.push("h.rev_host = get_unreversed_host(:host || '.') || '.'"); + // When filtering on a host we are in some sort of site specific search, + // thus we want a cleaner set of results, compared to a general search. + // This means removing less interesting urls, like redirects or + // non-bookmarked title-less pages. + + if (lazy.UrlbarPrefs.get("restyleSearches") || this._searchModeEngine) { + // If restyle is enabled, we want to filter out redirect targets, + // because sources are urls built using search engines definitions that + // we can reverse-parse. + // In this case we can't filter on title-less pages because redirect + // sources likely don't have a title and recognizing sources is costly. + // Bug 468710 may help with this. + conditions.push(`NOT EXISTS ( + WITH visits(type) AS ( + SELECT visit_type + FROM moz_historyvisits + WHERE place_id = h.id + ORDER BY visit_date DESC + LIMIT 10 /* limit to the last 10 visits */ + ) + SELECT 1 FROM visits + WHERE type IN (5,6) + )`); + } else { + // If instead restyle is disabled, we want to keep redirect targets, + // because sources are often unreadable title-less urls. + conditions.push(`NOT EXISTS ( + WITH visits(id) AS ( + SELECT id + FROM moz_historyvisits + WHERE place_id = h.id + ORDER BY visit_date DESC + LIMIT 10 /* limit to the last 10 visits */ + ) + SELECT 1 + FROM visits src + JOIN moz_historyvisits dest ON src.id = dest.from_visit + WHERE dest.visit_type IN (5,6) + )`); + // Filter out empty-titled pages, they could be redirect sources that + // we can't recognize anymore because their target was wrongly expired + // due to Bug 1664252. + conditions.push("(h.foreign_count > 0 OR h.title NOTNULL)"); + } + } + + if ( + this.hasBehavior("restrict") || + (!this.hasBehavior("openpage") && + (!this.hasBehavior("history") || !this.hasBehavior("bookmark"))) + ) { + 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 defaultQuery(conditions.join(" AND ")); + }, + + get _emptySearchDefaultBehavior() { + // Further restrictions to apply for "empty searches" (searching for + // ""). The empty behavior is typed history, if history is enabled. + // Otherwise, it is bookmarks, if they are enabled. If both history and + // bookmarks are disabled, it defaults to open pages. + let val = Ci.mozIPlacesAutoComplete.BEHAVIOR_RESTRICT; + if (lazy.UrlbarPrefs.get("suggest.history")) { + val |= Ci.mozIPlacesAutoComplete.BEHAVIOR_HISTORY; + } else if (lazy.UrlbarPrefs.get("suggest.bookmark")) { + val |= Ci.mozIPlacesAutoComplete.BEHAVIOR_BOOKMARK; + } else { + val |= Ci.mozIPlacesAutoComplete.BEHAVIOR_OPENPAGE; + } + return val; + }, + + /** + * If the user-provided string starts with a keyword that gave a heuristic + * result, this will strip it. + * + * @returns {string} The filtered search string. + */ + get _keywordFilteredSearchString() { + let tokens = this._searchTokens.map(t => t.value); + if (this._firstTokenIsKeyword) { + tokens = tokens.slice(1); + } + return tokens.join(" "); + }, + + /** + * Obtains the search query to be used based on the previously set search + * preferences (accessed by this.hasBehavior). + * + * @returns {Array} + * An array consisting of the correctly optimized query to search the + * database with and an object containing the params to bound. + */ + get _searchQuery() { + let params = { + parent: lazy.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._keywordFilteredSearchString, + 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, + }; + if (this._filterOnHost) { + params.host = this._filterOnHost; + } + return [this._suggestionPrefQuery, params]; + }, + + /** + * Obtains the query to search for switch-to-tab entries. + * + * @returns {Array} + * 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._keywordFilteredSearchString, + userContextId: this._userContextId, + maxResults: this._maxResults, + }, + ]; + }, + + // 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. + */ + _notifyDelaysCount: 0, + notifyResult(searchOngoing) { + let notify = () => { + if (!this.pending) { + return; + } + this._notifyDelaysCount = 0; + this._listener(this._matches, searchOngoing); + if (!searchOngoing) { + // Break possible cycles. + this._listener = null; + this._provider = 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 (this._notifyDelaysCount > 3) { + notify(); + } else { + this._notifyDelaysCount++; + this._notifyTimer = setTimeout(notify, NOTIFYRESULT_DELAY_MS); + } + }, +}; + +/** + * Class used to create the provider. + */ +class ProviderPlaces extends UrlbarProvider { + // Promise resolved when the database initialization has completed, or null + // if it has never been requested. + _promiseDatabase = null; + + /** + * Returns the name of this provider. + * + * @returns {string} the name of this provider. + */ + get name() { + return "Places"; + } + + /** + * Returns the type of this provider. + * + * @returns {integer} one of the types from UrlbarUtils.PROVIDER_TYPE.* + */ + get type() { + return UrlbarUtils.PROVIDER_TYPE.PROFILE; + } + + /** + * Gets a Sqlite database handle. + * + * @returns {Promise<OpenedConnection>} + * A connection to the Sqlite database handle (according to {@link Sqlite.sys.mjs}). + * @throws A javascript exception + */ + getDatabaseHandle() { + if (!this._promiseDatabase) { + this._promiseDatabase = (async () => { + let conn = await lazy.PlacesUtils.promiseLargeCacheDBConnection(); + + // We don't catch exceptions here as it is too late to block shutdown. + lazy.Sqlite.shutdown.addBlocker("UrlbarProviderPlaces closing", () => { + // Break a possible cycle through the + // previous result, the controller and + // ourselves. + this._currentSearch = null; + }); + + return conn; + })().catch(ex => { + dump("Couldn't get database handle: " + ex + "\n"); + this.logger.error(ex); + }); + } + return this._promiseDatabase; + } + + /** + * Whether this provider should be invoked for the given context. + * If this method returns false, the providers manager won't start a query + * with this provider, to save on resources. + * + * @param {UrlbarQueryContext} queryContext The query context object + * @returns {boolean} Whether this provider should be invoked for the search. + */ + isActive(queryContext) { + if ( + !queryContext.trimmedSearchString && + queryContext.searchMode?.engineName && + lazy.UrlbarPrefs.get("update2.emptySearchBehavior") < 2 + ) { + return false; + } + return true; + } + + /** + * Starts querying. + * + * @param {object} queryContext The query context object + * @param {Function} addCallback Callback invoked by the provider to add a new + * result. + * @returns {Promise} resolved when the query stops. + */ + startQuery(queryContext, addCallback) { + let instance = this.queryInstance; + let urls = new Set(); + this._startLegacyQuery(queryContext, matches => { + if (instance != this.queryInstance) { + return; + } + let results = convertLegacyMatches(queryContext, matches, urls); + for (let result of results) { + addCallback(this, result); + } + }); + return this._deferred.promise; + } + + /** + * Cancels a running query. + * + * @param {object} queryContext The query context object + */ + cancelQuery(queryContext) { + if (this._currentSearch) { + this._currentSearch.stop(); + } + if (this._deferred) { + this._deferred.resolve(); + } + // 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 {boolean} [notify] + * Indicates if we should notify the AutoComplete listener about our + * results or not. Default false. + */ + finishSearch(notify = false) { + // 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; + } + + // 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); + } + + _startLegacyQuery(queryContext, callback) { + let deferred = lazy.PromiseUtils.defer(); + let listener = (matches, searchOngoing) => { + callback(matches); + if (!searchOngoing) { + deferred.resolve(); + } + }; + this._startSearch(queryContext.searchString, listener, queryContext); + this._deferred = deferred; + } + + _startSearch(searchString, listener, queryContext) { + // Stop the search in case the controller has not taken care of it. + if (this._currentSearch) { + this.cancelQuery(); + } + + let search = (this._currentSearch = new Search( + queryContext, + listener, + this + )); + this.getDatabaseHandle() + .then(conn => search.execute(conn)) + .catch(ex => { + dump(`Query failed: ${ex}\n`); + this.logger.error(ex); + }) + .then(() => { + if (search == this._currentSearch) { + this.finishSearch(true); + } + }); + } +} + +export var UrlbarProviderPlaces = new ProviderPlaces(); |