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browser/metro/base/content/contenthandlers/ConsoleAPIObserver.js@7e26c7da4463 (annotated)

browser/metro/base/content/contenthandlers/ConsoleAPIObserver.js

Wed, 31 Dec 2014 06:55:50 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 06:55:50 +0100

changeset 2

7e26c7da4463

permissions

-rw-r--r--

Added tag UPSTREAM_283F7C6 for changeset ca08bd8f51b2

michael@0	1	/* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	2	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	3	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	4
michael@0	5	let Ci = Components.interfaces;
michael@0	6	let Cc = Components.classes;
michael@0	7
michael@0	8	dump("### ConsoleAPIObserver.js loaded\n");
michael@0	9
michael@0	10	/*
michael@0	11	* ConsoleAPIObserver
michael@0	12	*
michael@0	13	*/
michael@0	14
michael@0	15	var ConsoleAPIObserver = {
michael@0	16	init: function init() {
michael@0	17	addMessageListener("Browser:TabOpen", this);
michael@0	18	addMessageListener("Browser:TabClose", this);
michael@0	19	},
michael@0	20
michael@0	21	receiveMessage: function receiveMessage(aMessage) {
michael@0	22	let json = aMessage.json;
michael@0	23	switch (aMessage.name) {
michael@0	24	case "Browser:TabOpen":
michael@0	25	Services.obs.addObserver(this, "console-api-log-event", false);
michael@0	26	break;
michael@0	27	case "Browser:TabClose":
michael@0	28	Services.obs.removeObserver(this, "console-api-log-event");
michael@0	29	break;
michael@0	30	}
michael@0	31	},
michael@0	32
michael@0	33	observe: function observe(aMessage, aTopic, aData) {
michael@0	34	let contentWindowId = content.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIDOMWindowUtils).outerWindowID;
michael@0	35	aMessage = aMessage.wrappedJSObject;
michael@0	36	if (aMessage.ID != contentWindowId)
michael@0	37	return;
michael@0	38
michael@0	39	let mappedArguments = Array.map(aMessage.arguments, this.formatResult, this);
michael@0	40	let joinedArguments = Array.join(mappedArguments, " ");
michael@0	41
michael@0	42	if (aMessage.level == "error" || aMessage.level == "warn") {
michael@0	43	let flag = (aMessage.level == "error" ? Ci.nsIScriptError.errorFlag : Ci.nsIScriptError.warningFlag);
michael@0	44	let consoleMsg = Cc["@mozilla.org/scripterror;1"].createInstance(Ci.nsIScriptError);
michael@0	45	consoleMsg.init(joinedArguments, null, null, 0, 0, flag, "content javascript");
michael@0	46	Services.console.logMessage(consoleMsg);
michael@0	47	} else if (aMessage.level == "trace") {
michael@0	48	let bundle = Services.strings.createBundle("chrome://global/locale/headsUpDisplay.properties");
michael@0	49	let args = aMessage.arguments;
michael@0	50	let filename = this.abbreviateSourceURL(args[0].filename);
michael@0	51	let functionName = args[0].functionName || bundle.GetStringFromName("stacktrace.anonymousFunction");
michael@0	52	let lineNumber = args[0].lineNumber;
michael@0	53
michael@0	54	let body = bundle.formatStringFromName("stacktrace.outputMessage", [filename, functionName, lineNumber], 3);
michael@0	55	body += "\n";
michael@0	56	args.forEach(function(aFrame) {
michael@0	57	body += aFrame.filename + " :: " + aFrame.functionName + " :: " + aFrame.lineNumber + "\n";
michael@0	58	});
michael@0	59
michael@0	60	Services.console.logStringMessage(body);
michael@0	61	} else {
michael@0	62	Services.console.logStringMessage(joinedArguments);
michael@0	63	}
michael@0	64	},
michael@0	65
michael@0	66	getResultType: function getResultType(aResult) {
michael@0	67	let type = aResult === null ? "null" : typeof aResult;
michael@0	68	if (type == "object" && aResult.constructor && aResult.constructor.name)
michael@0	69	type = aResult.constructor.name;
michael@0	70	return type.toLowerCase();
michael@0	71	},
michael@0	72
michael@0	73	formatResult: function formatResult(aResult) {
michael@0	74	let output = "";
michael@0	75	let type = this.getResultType(aResult);
michael@0	76	switch (type) {
michael@0	77	case "string":
michael@0	78	case "boolean":
michael@0	79	case "date":
michael@0	80	case "error":
michael@0	81	case "number":
michael@0	82	case "regexp":
michael@0	83	output = aResult.toString();
michael@0	84	break;
michael@0	85	case "null":
michael@0	86	case "undefined":
michael@0	87	output = type;
michael@0	88	break;
michael@0	89	default:
michael@0	90	output = aResult.toString();
michael@0	91	break;
michael@0	92	}
michael@0	93
michael@0	94	return output;
michael@0	95	},
michael@0	96
michael@0	97	abbreviateSourceURL: function abbreviateSourceURL(aSourceURL) {
michael@0	98	// Remove any query parameters.
michael@0	99	let hookIndex = aSourceURL.indexOf("?");
michael@0	100	if (hookIndex > -1)
michael@0	101	aSourceURL = aSourceURL.substring(0, hookIndex);
michael@0	102
michael@0	103	// Remove a trailing "/".
michael@0	104	if (aSourceURL[aSourceURL.length - 1] == "/")
michael@0	105	aSourceURL = aSourceURL.substring(0, aSourceURL.length - 1);
michael@0	106
michael@0	107	// Remove all but the last path component.
michael@0	108	let slashIndex = aSourceURL.lastIndexOf("/");
michael@0	109	if (slashIndex > -1)
michael@0	110	aSourceURL = aSourceURL.substring(slashIndex + 1);
michael@0	111
michael@0	112	return aSourceURL;
michael@0	113	}
michael@0	114	};
michael@0	115	this.ConsoleAPIObserver = ConsoleAPIObserver;
michael@0	116
michael@0	117	ConsoleAPIObserver.init();
michael@0	118