mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
397 lines
14 KiB
JavaScript
397 lines
14 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const DEBUG = false;
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function debug(s) {
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if (DEBUG) dump("-*- SettingsManager: " + s + "\n");
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}
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const Cc = Components.classes;
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const Ci = Components.interfaces;
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const Cu = Components.utils;
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Cu.import("resource://gre/modules/SettingsQueue.jsm");
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Cu.import("resource://gre/modules/SettingsDB.jsm");
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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Cu.import("resource://gre/modules/Services.jsm");
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Cu.import("resource://gre/modules/ObjectWrapper.jsm");
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XPCOMUtils.defineLazyServiceGetter(this, "cpmm",
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"@mozilla.org/childprocessmessagemanager;1",
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"nsIMessageSender");
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function SettingsLock(aSettingsManager) {
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this._open = true;
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this._isBusy = false;
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this._requests = new Queue();
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this._settingsManager = aSettingsManager;
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this._transaction = null;
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}
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SettingsLock.prototype = {
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get closed() {
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return !this._open;
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},
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_wrap: function _wrap(obj) {
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return ObjectWrapper.wrap(obj, this._settingsManager._window);
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},
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process: function process() {
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let lock = this;
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lock._open = false;
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let store = lock._transaction.objectStore(SETTINGSSTORE_NAME);
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while (!lock._requests.isEmpty()) {
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let info = lock._requests.dequeue();
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if (DEBUG) debug("info: " + info.intent);
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let request = info.request;
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switch (info.intent) {
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case "clear":
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let clearReq = store.clear();
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clearReq.onsuccess = function() {
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this._open = true;
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Services.DOMRequest.fireSuccess(request, 0);
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this._open = false;
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}.bind(lock);
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clearReq.onerror = function() {
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Services.DOMRequest.fireError(request, 0)
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};
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break;
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case "set":
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let keys = Object.getOwnPropertyNames(info.settings);
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for (let i = 0; i < keys.length; i++) {
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let key = keys[i];
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let last = i === keys.length - 1;
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if (DEBUG) debug("key: " + key + ", val: " + JSON.stringify(info.settings[key]) + ", type: " + typeof(info.settings[key]));
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lock._isBusy = true;
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let checkKeyRequest = store.get(key);
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checkKeyRequest.onsuccess = function (event) {
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let defaultValue;
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let userValue = info.settings[key];
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if (event.target.result) {
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defaultValue = event.target.result.defaultValue;
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} else {
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defaultValue = null;
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if (DEBUG) debug("MOZSETTINGS-SET-WARNING: " + key + " is not in the database.\n");
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}
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let obj = {settingName: key, defaultValue: defaultValue, userValue: userValue};
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if (DEBUG) debug("store1: " + JSON.stringify(obj));
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let setReq = store.put(obj);
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setReq.onsuccess = function() {
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lock._isBusy = false;
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cpmm.sendAsyncMessage("Settings:Changed", { key: key, value: userValue });
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if (last && !request.error) {
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lock._open = true;
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Services.DOMRequest.fireSuccess(request, 0);
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lock._open = false;
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if (!lock._requests.isEmpty()) {
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lock.process();
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}
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}
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};
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setReq.onerror = function() {
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if (!request.error) {
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Services.DOMRequest.fireError(request, setReq.error.name)
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}
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};
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};
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checkKeyRequest.onerror = function(event) {
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if (!request.error) {
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Services.DOMRequest.fireError(request, checkKeyRequest.error.name)
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}
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};
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}
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break;
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case "get":
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let getReq = (info.name === "*") ? store.mozGetAll()
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: store.mozGetAll(info.name);
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getReq.onsuccess = function(event) {
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if (DEBUG) debug("Request for '" + info.name + "' successful. " +
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"Record count: " + event.target.result.length);
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if (event.target.result.length == 0) {
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if (DEBUG) debug("MOZSETTINGS-GET-WARNING: " + info.name + " is not in the database.\n");
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}
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let results = {};
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for (var i in event.target.result) {
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let result = event.target.result[i];
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var name = result.settingName;
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if (DEBUG) debug("VAL: " + result.userValue +", " + result.defaultValue + "\n");
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var value = result.userValue !== undefined ? result.userValue : result.defaultValue;
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results[name] = this._wrap(value);
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}
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this._open = true;
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Services.DOMRequest.fireSuccess(request, this._wrap(results));
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this._open = false;
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}.bind(lock);
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getReq.onerror = function() {
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Services.DOMRequest.fireError(request, 0)
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};
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break;
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}
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}
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lock._open = true;
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},
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createTransactionAndProcess: function() {
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if (this._settingsManager._settingsDB._db) {
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var lock;
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while (lock = this._settingsManager._locks.dequeue()) {
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if (!lock._transaction) {
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let transactionType = this._settingsManager.hasWritePrivileges ? "readwrite" : "readonly";
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lock._transaction = lock._settingsManager._settingsDB._db.transaction(SETTINGSSTORE_NAME, transactionType);
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}
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if (!lock._isBusy) {
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lock.process();
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} else {
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this._settingsManager._locks.enqueue(lock);
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}
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}
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if (!this._requests.isEmpty() && !this._isBusy) {
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this.process();
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}
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}
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},
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get: function get(aName) {
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if (!this._open) {
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dump("Settings lock not open!\n");
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throw Components.results.NS_ERROR_ABORT;
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}
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if (this._settingsManager.hasReadPrivileges) {
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let req = Services.DOMRequest.createRequest(this._settingsManager._window);
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this._requests.enqueue({ request: req, intent:"get", name: aName });
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this.createTransactionAndProcess();
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return req;
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} else {
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if (DEBUG) debug("get not allowed");
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throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
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}
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},
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_serializePreservingBinaries: function _serializePreservingBinaries(aObject) {
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// We need to serialize settings objects, otherwise they can change between
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// the set() call and the enqueued request being processed. We can't simply
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// parse(stringify(obj)) because that breaks things like Blobs, Files and
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// Dates, so we use stringify's replacer and parse's reviver parameters to
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// preserve binaries.
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let manager = this._settingsManager;
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let binaries = Object.create(null);
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let stringified = JSON.stringify(aObject, function(key, value) {
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value = manager._settingsDB.prepareValue(value);
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let kind = ObjectWrapper.getObjectKind(value);
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if (kind == "file" || kind == "blob" || kind == "date") {
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let uuid = Cc["@mozilla.org/uuid-generator;1"].getService(Ci.nsIUUIDGenerator)
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.generateUUID().toString();
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binaries[uuid] = value;
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return uuid;
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}
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return value;
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});
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return JSON.parse(stringified, function(key, value) {
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if (value in binaries) {
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return binaries[value];
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}
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return value;
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});
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},
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set: function set(aSettings) {
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if (!this._open) {
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throw "Settings lock not open";
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}
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if (this._settingsManager.hasWritePrivileges) {
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let req = Services.DOMRequest.createRequest(this._settingsManager._window);
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if (DEBUG) debug("send: " + JSON.stringify(aSettings));
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let settings = this._serializePreservingBinaries(aSettings);
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this._requests.enqueue({request: req, intent: "set", settings: settings});
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this.createTransactionAndProcess();
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return req;
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} else {
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if (DEBUG) debug("set not allowed");
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throw "No permission to call set";
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}
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},
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clear: function clear() {
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if (!this._open) {
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throw "Settings lock not open";
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}
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if (this._settingsManager.hasWritePrivileges) {
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let req = Services.DOMRequest.createRequest(this._settingsManager._window);
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this._requests.enqueue({ request: req, intent: "clear"});
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this.createTransactionAndProcess();
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return req;
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} else {
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if (DEBUG) debug("clear not allowed");
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throw "No permission to call clear";
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}
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},
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classID: Components.ID("{60c9357c-3ae0-4222-8f55-da01428470d5}"),
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contractID: "@mozilla.org/settingsLock;1",
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QueryInterface: XPCOMUtils.generateQI([Ci.nsISupports]),
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};
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let myGlobal = this;
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function SettingsManager() {
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this._locks = new Queue();
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if (!("indexedDB" in myGlobal)) {
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let idbManager = Components.classes["@mozilla.org/dom/indexeddb/manager;1"].getService(Ci.nsIIndexedDatabaseManager);
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idbManager.initWindowless(myGlobal);
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}
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this._settingsDB = new SettingsDB();
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this._settingsDB.init(myGlobal);
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}
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SettingsManager.prototype = {
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_callbacks: null,
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_wrap: function _wrap(obj) {
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return ObjectWrapper.wrap(obj, this._window);
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},
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nextTick: function nextTick(aCallback, thisObj) {
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if (thisObj)
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aCallback = aCallback.bind(thisObj);
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Services.tm.currentThread.dispatch(aCallback, Ci.nsIThread.DISPATCH_NORMAL);
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},
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set onsettingchange(aHandler) {
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this.__DOM_IMPL__.setEventHandler("onsettingchange", aHandler);
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},
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get onsettingchange() {
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return this.__DOM_IMPL__.getEventHandler("onsettingchange");
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},
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createLock: function() {
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if (DEBUG) debug("get lock!");
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var lock = new SettingsLock(this);
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this._locks.enqueue(lock);
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this._settingsDB.ensureDB(
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function() { lock.createTransactionAndProcess(); },
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function() { dump("Cannot open Settings DB. Trying to open an old version?\n"); },
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myGlobal );
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this.nextTick(function() { this._open = false; }, lock);
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return lock;
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},
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receiveMessage: function(aMessage) {
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if (DEBUG) debug("Settings::receiveMessage: " + aMessage.name);
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let msg = aMessage.json;
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switch (aMessage.name) {
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case "Settings:Change:Return:OK":
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if (DEBUG) debug('data:' + msg.key + ':' + msg.value + '\n');
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let event = new this._window.MozSettingsEvent("settingchange", this._wrap({
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settingName: msg.key,
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settingValue: msg.value
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}));
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this.__DOM_IMPL__.dispatchEvent(event);
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if (this._callbacks && this._callbacks[msg.key]) {
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if (DEBUG) debug("observe callback called! " + msg.key + " " + this._callbacks[msg.key].length);
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this._callbacks[msg.key].forEach(function(cb) {
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cb(this._wrap({settingName: msg.key, settingValue: msg.value}));
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}.bind(this));
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} else {
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if (DEBUG) debug("no observers stored!");
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}
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break;
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default:
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if (DEBUG) debug("Wrong message: " + aMessage.name);
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}
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},
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addObserver: function addObserver(aName, aCallback) {
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if (DEBUG) debug("addObserver " + aName);
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if (!this._callbacks) {
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cpmm.sendAsyncMessage("Settings:RegisterForMessages");
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this._callbacks = {};
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}
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if (!this._callbacks[aName]) {
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this._callbacks[aName] = [aCallback];
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} else {
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this._callbacks[aName].push(aCallback);
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}
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},
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removeObserver: function removeObserver(aName, aCallback) {
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if (DEBUG) debug("deleteObserver " + aName);
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if (this._callbacks && this._callbacks[aName]) {
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let index = this._callbacks[aName].indexOf(aCallback)
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if (index != -1) {
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this._callbacks[aName].splice(index, 1)
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} else {
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if (DEBUG) debug("Callback not found for: " + aName);
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}
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} else {
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if (DEBUG) debug("No observers stored for " + aName);
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}
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},
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init: function(aWindow) {
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cpmm.addMessageListener("Settings:Change:Return:OK", this);
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this._window = aWindow;
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Services.obs.addObserver(this, "inner-window-destroyed", false);
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let util = aWindow.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowUtils);
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this.innerWindowID = util.currentInnerWindowID;
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let readPerm = Services.perms.testExactPermissionFromPrincipal(aWindow.document.nodePrincipal, "settings-read");
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let writePerm = Services.perms.testExactPermissionFromPrincipal(aWindow.document.nodePrincipal, "settings-write");
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this.hasReadPrivileges = readPerm == Ci.nsIPermissionManager.ALLOW_ACTION;
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this.hasWritePrivileges = writePerm == Ci.nsIPermissionManager.ALLOW_ACTION;
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if (this.hasReadPrivileges) {
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cpmm.sendAsyncMessage("Settings:RegisterForMessages");
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}
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if (!this.hasReadPrivileges && !this.hasWritePrivileges) {
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dump("No settings permission for: " + aWindow.document.nodePrincipal.origin + "\n");
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Cu.reportError("No settings permission for: " + aWindow.document.nodePrincipal.origin);
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}
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},
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observe: function(aSubject, aTopic, aData) {
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if (DEBUG) debug("Topic: " + aTopic);
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if (aTopic == "inner-window-destroyed") {
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let wId = aSubject.QueryInterface(Ci.nsISupportsPRUint64).data;
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if (wId == this.innerWindowID) {
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Services.obs.removeObserver(this, "inner-window-destroyed");
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cpmm.removeMessageListener("Settings:Change:Return:OK", this);
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this._requests = null;
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this._window = null;
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this._innerWindowID = null;
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this._settingsDB.close();
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}
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}
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},
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classID: Components.ID("{c40b1c70-00fb-11e2-a21f-0800200c9a66}"),
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contractID: "@mozilla.org/settingsManager;1",
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QueryInterface: XPCOMUtils.generateQI([Ci.nsISupports,
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Ci.nsIDOMGlobalPropertyInitializer]),
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};
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this.NSGetFactory = XPCOMUtils.generateNSGetFactory([SettingsManager, SettingsLock])
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