gecko-dev/mobile/android/chrome/content/ConsoleAPI.js

97 lines
3.8 KiB
JavaScript

/* 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/. */
"use strict";
var ConsoleAPI = {
observe: function observe(aMessage, aTopic, aData) {
aMessage = aMessage.wrappedJSObject;
let mappedArguments = Array.map(aMessage.arguments, this.formatResult, this);
let joinedArguments = Array.join(mappedArguments, " ");
if (aMessage.level == "error" || aMessage.level == "warn") {
let flag = (aMessage.level == "error" ? Ci.nsIScriptError.errorFlag : Ci.nsIScriptError.warningFlag);
let consoleMsg = Cc["@mozilla.org/scripterror;1"].createInstance(Ci.nsIScriptError);
consoleMsg.init(joinedArguments, null, null, 0, 0, flag, "content javascript");
Services.console.logMessage(consoleMsg);
} else if (aMessage.level == "trace") {
let bundle = Services.strings.createBundle("chrome://browser/locale/browser.properties");
let args = aMessage.arguments;
let filename = this.abbreviateSourceURL(args[0].filename);
let functionName = args[0].functionName || bundle.GetStringFromName("stacktrace.anonymousFunction");
let lineNumber = args[0].lineNumber;
let body = bundle.formatStringFromName("stacktrace.outputMessage", [filename, functionName, lineNumber], 3);
body += "\n";
args.forEach(function(aFrame) {
let functionName = aFrame.functionName || bundle.GetStringFromName("stacktrace.anonymousFunction");
body += " " + aFrame.filename + " :: " + functionName + " :: " + aFrame.lineNumber + "\n";
});
Services.console.logStringMessage(body);
} else if (aMessage.level == "time" && aMessage.arguments) {
let bundle = Services.strings.createBundle("chrome://browser/locale/browser.properties");
let body = bundle.formatStringFromName("timer.start", [aMessage.arguments.name], 1);
Services.console.logStringMessage(body);
} else if (aMessage.level == "timeEnd" && aMessage.arguments) {
let bundle = Services.strings.createBundle("chrome://browser/locale/browser.properties");
let body = bundle.formatStringFromName("timer.end", [aMessage.arguments.name, aMessage.arguments.duration], 2);
Services.console.logStringMessage(body);
} else if (["group", "groupCollapsed", "groupEnd"].indexOf(aMessage.level) != -1) {
// Do nothing yet
} else {
Services.console.logStringMessage(joinedArguments);
}
},
getResultType: function getResultType(aResult) {
let type = aResult === null ? "null" : typeof aResult;
if (type == "object" && aResult.constructor && aResult.constructor.name)
type = aResult.constructor.name;
return type.toLowerCase();
},
formatResult: function formatResult(aResult) {
let output = "";
let type = this.getResultType(aResult);
switch (type) {
case "string":
case "boolean":
case "date":
case "error":
case "number":
case "regexp":
output = aResult.toString();
break;
case "null":
case "undefined":
output = type;
break;
default:
output = aResult.toString();
break;
}
return output;
},
abbreviateSourceURL: function abbreviateSourceURL(aSourceURL) {
// Remove any query parameters.
let hookIndex = aSourceURL.indexOf("?");
if (hookIndex > -1)
aSourceURL = aSourceURL.substring(0, hookIndex);
// Remove a trailing "/".
if (aSourceURL[aSourceURL.length - 1] == "/")
aSourceURL = aSourceURL.substring(0, aSourceURL.length - 1);
// Remove all but the last path component.
let slashIndex = aSourceURL.lastIndexOf("/");
if (slashIndex > -1)
aSourceURL = aSourceURL.substring(slashIndex + 1);
return aSourceURL;
}
};