mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
324 lines
10 KiB
JavaScript
324 lines
10 KiB
JavaScript
/* -*- Mode: js2; js2-basic-offset: 2; indent-tabs-mode: nil; -*- */
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/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
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/* 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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let Cu = Components.utils;
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let Ci = Components.interfaces;
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let Cc = Components.classes;
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// The maximum allowed number of concurrent timers per page.
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const MAX_PAGE_TIMERS = 10000;
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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/ConsoleAPIStorage.jsm");
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function ConsoleAPI() {}
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ConsoleAPI.prototype = {
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classID: Components.ID("{b49c18f8-3379-4fc0-8c90-d7772c1a9ff3}"),
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QueryInterface: XPCOMUtils.generateQI([Ci.nsIDOMGlobalPropertyInitializer]),
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// nsIDOMGlobalPropertyInitializer
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init: function CA_init(aWindow) {
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Services.obs.addObserver(this, "xpcom-shutdown", false);
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Services.obs.addObserver(this, "inner-window-destroyed", false);
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let outerID;
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let innerID;
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try {
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let windowUtils = aWindow.QueryInterface(Ci.nsIInterfaceRequestor)
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.getInterface(Ci.nsIDOMWindowUtils);
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outerID = windowUtils.outerWindowID;
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innerID = windowUtils.currentInnerWindowID;
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}
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catch (ex) {
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Cu.reportError(ex);
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}
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let self = this;
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let chromeObject = {
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// window.console API
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log: function CA_log() {
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self.notifyObservers(outerID, innerID, "log", self.processArguments(arguments));
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},
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info: function CA_info() {
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self.notifyObservers(outerID, innerID, "info", self.processArguments(arguments));
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},
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warn: function CA_warn() {
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self.notifyObservers(outerID, innerID, "warn", self.processArguments(arguments));
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},
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error: function CA_error() {
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self.notifyObservers(outerID, innerID, "error", self.processArguments(arguments));
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},
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debug: function CA_debug() {
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self.notifyObservers(outerID, innerID, "log", self.processArguments(arguments));
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},
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trace: function CA_trace() {
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self.notifyObservers(outerID, innerID, "trace", self.getStackTrace());
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},
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// Displays an interactive listing of all the properties of an object.
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dir: function CA_dir() {
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self.notifyObservers(outerID, innerID, "dir", arguments);
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},
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group: function CA_group() {
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self.notifyObservers(outerID, innerID, "group", self.beginGroup(arguments));
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},
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groupCollapsed: function CA_groupCollapsed() {
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self.notifyObservers(outerID, innerID, "groupCollapsed", self.beginGroup(arguments));
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},
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groupEnd: function CA_groupEnd() {
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self.notifyObservers(outerID, innerID, "groupEnd", arguments);
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},
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time: function CA_time() {
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self.notifyObservers(outerID, innerID, "time", self.startTimer(innerID, arguments[0]));
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},
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timeEnd: function CA_timeEnd() {
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self.notifyObservers(outerID, innerID, "timeEnd", self.stopTimer(innerID, arguments[0]));
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},
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__exposedProps__: {
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log: "r",
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info: "r",
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warn: "r",
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error: "r",
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debug: "r",
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trace: "r",
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dir: "r",
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group: "r",
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groupCollapsed: "r",
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groupEnd: "r",
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time: "r",
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timeEnd: "r"
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}
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};
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// We need to return an actual content object here, instead of a wrapped
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// chrome object. This allows things like console.log.bind() to work.
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let contentObj = Cu.createObjectIn(aWindow);
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function genPropDesc(fun) {
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return { enumerable: true, configurable: true, writable: true,
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value: chromeObject[fun].bind(chromeObject) };
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}
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const properties = {
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log: genPropDesc('log'),
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info: genPropDesc('info'),
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warn: genPropDesc('warn'),
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error: genPropDesc('error'),
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debug: genPropDesc('debug'),
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trace: genPropDesc('trace'),
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dir: genPropDesc('dir'),
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group: genPropDesc('group'),
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groupCollapsed: genPropDesc('groupCollapsed'),
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groupEnd: genPropDesc('groupEnd'),
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time: genPropDesc('time'),
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timeEnd: genPropDesc('timeEnd'),
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__noSuchMethod__: { enumerable: true, configurable: true, writable: true,
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value: function() {} },
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__mozillaConsole__: { value: true }
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};
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Object.defineProperties(contentObj, properties);
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Cu.makeObjectPropsNormal(contentObj);
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return contentObj;
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},
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observe: function CA_observe(aSubject, aTopic, aData)
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{
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if (aTopic == "xpcom-shutdown") {
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Services.obs.removeObserver(this, "xpcom-shutdown");
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Services.obs.removeObserver(this, "inner-window-destroyed");
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}
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else if (aTopic == "inner-window-destroyed") {
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let innerWindowID = aSubject.QueryInterface(Ci.nsISupportsPRUint64).data;
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delete this.timerRegistry[innerWindowID + ""];
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}
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},
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/**
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* Notify all observers of any console API call.
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*
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* @param number aOuterWindowID
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* The outer window ID from where the message came from.
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* @param number aInnerWindowID
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* The inner window ID from where the message came from.
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* @param string aLevel
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* The message level.
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* @param mixed aArguments
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* The arguments given to the console API call.
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**/
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notifyObservers:
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function CA_notifyObservers(aOuterWindowID, aInnerWindowID, aLevel, aArguments) {
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if (!aOuterWindowID) {
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return;
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}
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let stack = this.getStackTrace();
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// Skip the first frame since it contains an internal call.
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let frame = stack[1];
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let consoleEvent = {
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ID: aOuterWindowID,
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innerID: aInnerWindowID,
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level: aLevel,
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filename: frame.filename,
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lineNumber: frame.lineNumber,
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functionName: frame.functionName,
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arguments: aArguments,
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timeStamp: Date.now(),
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};
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consoleEvent.wrappedJSObject = consoleEvent;
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ConsoleAPIStorage.recordEvent(aInnerWindowID, consoleEvent);
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Services.obs.notifyObservers(consoleEvent,
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"console-api-log-event", aOuterWindowID);
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},
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/**
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* Process the console API call arguments in order to perform printf-like
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* string substitution.
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* TODO: object substitution should display an interactive property list (bug
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* 685815) and width and precision qualifiers should be taken into account
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* (bug 685813).
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*
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* @param mixed aArguments
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* The arguments given to the console API call.
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**/
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processArguments: function CA_processArguments(aArguments) {
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if (aArguments.length < 2) {
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return aArguments;
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}
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let args = Array.prototype.slice.call(aArguments);
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let format = args.shift();
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if (typeof format != "string") {
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return aArguments;
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}
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// Format specification regular expression.
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let pattern = /%(\d*).?(\d*)[a-zA-Z]/g;
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let processed = format.replace(pattern, function CA_PA_substitute(spec) {
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switch (spec[spec.length-1]) {
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case "o":
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case "s":
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return String(args.shift());
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case "d":
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case "i":
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return parseInt(args.shift());
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case "f":
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return parseFloat(args.shift());
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default:
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return spec;
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};
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});
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args.unshift(processed);
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return args;
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},
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/**
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* Build the stacktrace array for the console.trace() call.
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*
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* @return array
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* Each element is a stack frame that holds the following properties:
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* filename, lineNumber, functionName and language.
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**/
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getStackTrace: function CA_getStackTrace() {
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let stack = [];
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let frame = Components.stack.caller;
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while (frame = frame.caller) {
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if (frame.language == Ci.nsIProgrammingLanguage.JAVASCRIPT ||
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frame.language == Ci.nsIProgrammingLanguage.JAVASCRIPT2) {
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stack.push({
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filename: frame.filename,
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lineNumber: frame.lineNumber,
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functionName: frame.name,
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language: frame.language,
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});
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}
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}
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return stack;
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},
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/**
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* Begin a new group for logging output together.
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**/
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beginGroup: function CA_beginGroup() {
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return Array.prototype.join.call(arguments[0], " ");
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},
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/*
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* A registry of started timers. It contains a map of pages (defined by their
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* inner window IDs) to timer maps. Timer maps are key-value pairs of timer
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* names to timer start times, for all timers defined in that page. Timer
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* names are prepended with the inner window ID in order to avoid conflicts
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* with Object.prototype functions.
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*/
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timerRegistry: {},
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/**
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* Create a new timer by recording the current time under the specified name.
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*
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* @param number aWindowId
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* The inner ID of the window.
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* @param string aName
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* The name of the timer.
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* @return object
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* The name property holds the timer name and the started property
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* holds the time the timer was started. In case of error, it returns
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* an object with the single property "error" that contains the key
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* for retrieving the localized error message.
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**/
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startTimer: function CA_startTimer(aWindowId, aName) {
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if (!aName) {
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return;
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}
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let innerID = aWindowId + "";
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if (!this.timerRegistry[innerID]) {
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this.timerRegistry[innerID] = {};
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}
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let pageTimers = this.timerRegistry[innerID];
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if (Object.keys(pageTimers).length > MAX_PAGE_TIMERS - 1) {
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return { error: "maxTimersExceeded" };
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}
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let key = aWindowId + "-" + aName.toString();
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if (!pageTimers[key]) {
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pageTimers[key] = Date.now();
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}
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return { name: aName, started: pageTimers[key] };
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},
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/**
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* Stop the timer with the specified name and retrieve the elapsed time.
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*
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* @param number aWindowId
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* The inner ID of the window.
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* @param string aName
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* The name of the timer.
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* @return object
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* The name property holds the timer name and the duration property
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* holds the number of milliseconds since the timer was started.
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**/
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stopTimer: function CA_stopTimer(aWindowId, aName) {
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if (!aName) {
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return;
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}
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let innerID = aWindowId + "";
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let pageTimers = this.timerRegistry[innerID];
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if (!pageTimers) {
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return;
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}
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let key = aWindowId + "-" + aName.toString();
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if (!pageTimers[key]) {
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return;
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}
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let duration = Date.now() - pageTimers[key];
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delete pageTimers[key];
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return { name: aName, duration: duration };
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}
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};
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let NSGetFactory = XPCOMUtils.generateNSGetFactory([ConsoleAPI]);
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