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https://github.com/mozilla/gecko-dev.git
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258 lines
8.7 KiB
JavaScript
258 lines
8.7 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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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Console API code.
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*
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* The Initial Developer of the Original Code is Mozilla Foundation
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* David Dahl <ddahl@mozilla.com> (Original Author)
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* Ryan Flint <rflint@mozilla.com>
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* Rob Campbell <rcampbell@mozilla.com>
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* Mihai Sucan <mihai.sucan@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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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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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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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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__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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}
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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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__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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/**
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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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};
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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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// 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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let NSGetFactory = XPCOMUtils.generateNSGetFactory([ConsoleAPI]);
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