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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
const lazy = {};
ChromeUtils.defineESModuleGetters(lazy, {
FormHistoryAutoCompleteResult:
"resource://gre/modules/FormHistoryAutoComplete.sys.mjs",
SearchSuggestionController:
"resource://gre/modules/SearchSuggestionController.sys.mjs",
});
/**
* SuggestAutoComplete is a base class that implements nsIAutoCompleteSearch
* and can collect results for a given search by using this.#suggestionController.
* We do it this way since the AutoCompleteController in Mozilla requires a
* unique XPCOM Service for every search provider, even if the logic for two
* providers is identical.
*
* @class
*/
class SuggestAutoComplete {
constructor() {
this.#suggestionController = new lazy.SearchSuggestionController();
this.#suggestionController.maxLocalResults = this.#historyLimit;
}
/**
* Notifies the front end of new results.
*
* @param {FormHistoryAutoCompleteResult} result
* Any previous form history result.
* @private
*/
onResultsReady(result) {
if (this.#listener) {
this.#listener.onSearchResult(this, result);
// Null out listener to make sure we don't notify it twice
this.#listener = null;
}
}
/**
* Initiates the search result gathering process. Part of
* nsIAutoCompleteSearch implementation.
*
* @param {string} searchString
* The user's query string.
* @param {string} searchParam
* unused, "an extra parameter"; even though this parameter and the
* next are unused, pass them through in case the form history
* service wants them
* @param {object} previousResult
* unused, a client-cached store of the previous generated resultset
* for faster searching.
* @param {object} listener
* object implementing nsIAutoCompleteObserver which we notify when
* results are ready.
*/
startSearch(searchString, searchParam, previousResult, listener) {
var formHistorySearchParam = searchParam.split("|")[0];
// Receive the information about the privacy mode of the window to which
// this search box belongs. The front-end's search.xml bindings passes this
// information in the searchParam parameter. The alternative would have
// been to modify nsIAutoCompleteSearch to add an argument to startSearch
// and patch all of autocomplete to be aware of this, but the searchParam
// argument is already an opaque argument, so this solution is hopefully
// less hackish (although still gross.)
var privacyMode = searchParam.split("|")[1] == "private";
// Start search immediately if possible, otherwise once the search
// service is initialized
if (Services.search.isInitialized) {
this.#triggerSearch(
searchString,
formHistorySearchParam,
listener,
privacyMode
).catch(console.error);
return;
}
Services.search
.init()
.then(() => {
this.#triggerSearch(
searchString,
formHistorySearchParam,
listener,
privacyMode
).catch(console.error);
})
.catch(result =>
console.error(
"Could not initialize search service, bailing out:",
result
)
);
}
/**
* Ends the search result gathering process. Part of nsIAutoCompleteSearch
* implementation.
*/
stopSearch() {
// Prevent reporting results of stopped search
this.#listener = null;
this.#suggestionController.stop();
}
#suggestionController;
/**
* Maximum number of history items displayed. This is capped at 7
* because the primary consumer (Firefox search bar) displays 10 rows
* by default, and so we want to leave some space for suggestions
* to be visible.
*
* @type {number}
*/
#historyLimit = 7;
/**
* The object implementing nsIAutoCompleteObserver that we notify when
* we have found results.
*
* @type {object|null}
*/
#listener = null;
/**
* Actual implementation of search.
*
* @param {string} searchString
* The user's query string.
* @param {string} searchParam
* unused
* @param {object} listener
* object implementing nsIAutoCompleteObserver which we notify when
* results are ready.
* @param {boolean} privacyMode
* True if the search was made from a private browsing mode context.
*/
async #triggerSearch(searchString, searchParam, listener, privacyMode) {
this.#listener = listener;
let results = await this.#suggestionController.fetch(
searchString,
privacyMode,
Services.search.defaultEngine
);
// Bug 1822297: This re-uses the wrappers from Satchel, to avoid re-writing
// our own nsIAutoCompleteSimpleResult implementation for now. However,
// we should do that at some stage to remove the dependency on satchel.
let formHistoryEntries = (results?.formHistoryResults ?? []).map(
historyEntry => ({
// We supply the comments field so that autocomplete does not kick
// in the unescaping of the results for display which it uses for
// urls.
comment: historyEntry.text,
...historyEntry,
})
);
let autoCompleteResult = new lazy.FormHistoryAutoCompleteResult(
null,
formHistoryEntries,
this.#suggestionController.formHistoryParam,
searchString
);
if (results?.remote?.length) {
// We shouldn't show tail suggestions in their full-text form.
// Suggestions are shown after form history results.
autoCompleteResult.fixedEntries = results.remote.reduce(
(results, item) => {
if (!item.matchPrefix && !item.tail) {
results.push({
value: item.value,
label: item.value,
// We supply the comments field so that autocomplete does not kick
// in the unescaping of the results for display which it uses for
// urls.
comment: item.value,
});
}
return results;
},
[]
);
}
// Notify the FE of our new results
this.onResultsReady(autoCompleteResult);
}
QueryInterface = ChromeUtils.generateQI([
"nsIAutoCompleteSearch",
"nsIAutoCompleteObserver",
]);
}
/**
* SearchSuggestAutoComplete is a service implementation that handles suggest
* results specific to web searches.
*
* @class
*/
export class SearchSuggestAutoComplete extends SuggestAutoComplete {
classID = Components.ID("{aa892eb4-ffbf-477d-9f9a-06c995ae9f27}");
serviceURL = "";
}
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