108 lines
3.7 KiB
JavaScript
108 lines
3.7 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
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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this.EXPORTED_SYMBOLS = ["CompatWarning"];
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const Ci = Components.interfaces;
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const Cc = Components.classes;
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const Cu = Components.utils;
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Cu.import("resource://gre/modules/Services.jsm");
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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Cu.import("resource://gre/modules/Preferences.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "console",
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"resource://gre/modules/Console.jsm");
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function section(number, url)
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{
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const baseURL = "https://developer.mozilla.org/en-US/Firefox/Multiprocess_Firefox/Limitations_of_chrome_scripts";
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return { number, url: baseURL + url };
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}
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var CompatWarning = {
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// Sometimes we want to generate a warning, but put off issuing it
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// until later. For example, if someone registers a listener, we
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// might only want to warn about it if the listener actually
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// fires. However, we want the warning to show a stack for the
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// registration site.
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delayedWarning: function(msg, addon, warning) {
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function isShimLayer(filename) {
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return filename.indexOf("CompatWarning.jsm") != -1 ||
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filename.indexOf("RemoteAddonsParent.jsm") != -1 ||
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filename.indexOf("RemoteAddonsChild.jsm") != -1 ||
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filename.indexOf("multiprocessShims.js") != -1;
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}
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let stack = Components.stack;
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while (stack && isShimLayer(stack.filename))
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stack = stack.caller;
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let alreadyWarned = false;
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return function() {
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if (alreadyWarned) {
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return;
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}
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alreadyWarned = true;
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if (addon) {
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let histogram = Services.telemetry.getKeyedHistogramById("ADDON_SHIM_USAGE");
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histogram.add(addon, warning ? warning.number : 0);
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}
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if (!Preferences.get("dom.ipc.shims.enabledWarnings", false))
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return;
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let error = Cc['@mozilla.org/scripterror;1'].createInstance(Ci.nsIScriptError);
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if (!error || !Services.console) {
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// Too late during shutdown to use the nsIConsole
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return;
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}
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let message = `Warning: ${msg}`;
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if (warning)
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message += `\nMore info at: ${warning.url}`;
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error.init(
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/* message*/ message,
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/* sourceName*/ stack ? stack.filename : "",
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/* sourceLine*/ stack ? stack.sourceLine : "",
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/* lineNumber*/ stack ? stack.lineNumber : 0,
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/* columnNumber*/ 0,
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/* flags*/ Ci.nsIScriptError.warningFlag,
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/* category*/ "chrome javascript");
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Services.console.logMessage(error);
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if (Preferences.get("dom.ipc.shims.dumpWarnings", false)) {
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dump(message + "\n");
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while (stack) {
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dump(stack + "\n");
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stack = stack.caller;
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}
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dump("\n");
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}
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};
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},
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warn: function(msg, addon, warning) {
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let delayed = this.delayedWarning(msg, addon, warning);
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delayed();
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},
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warnings: {
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content: section(1, "#gBrowser.contentWindow.2C_window.content..."),
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limitations_of_CPOWs: section(2, "#Limitations_of_CPOWs"),
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nsIContentPolicy: section(3, "#nsIContentPolicy"),
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nsIWebProgressListener: section(4, "#nsIWebProgressListener"),
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observers: section(5, "#Observers_in_the_chrome_process"),
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DOM_events: section(6, "#DOM_Events"),
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sandboxes: section(7, "#Sandboxes"),
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JSMs: section(8, "#JavaScript_code_modules_(JSMs)"),
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nsIAboutModule: section(9, "#nsIAboutModule"),
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// If more than 14 values appear here, you need to change the
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// ADDON_SHIM_USAGE histogram definition in Histograms.json.
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},
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};
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