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addon-sdk/source/lib/sdk/stylesheet/style.js@6474c204b198 (annotated)

addon-sdk/source/lib/sdk/stylesheet/style.js

Wed, 31 Dec 2014 06:09:35 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 06:09:35 +0100

changeset 0

6474c204b198

permissions

-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

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	"use strict";
michael@0	5
michael@0	6	module.metadata = {
michael@0	7	"stability": "experimental"
michael@0	8	};
michael@0	9
michael@0	10	const { Cc, Ci } = require("chrome");
michael@0	11	const { Class } = require("../core/heritage");
michael@0	12	const { ns } = require("../core/namespace");
michael@0	13	const { URL } = require('../url');
michael@0	14	const events = require("../system/events");
michael@0	15	const { loadSheet, removeSheet, isTypeValid } = require("./utils");
michael@0	16	const { isString } = require("../lang/type");
michael@0	17	const { attachTo, detachFrom, getTargetWindow } = require("../content/mod");
michael@0	18
michael@0	19	const { freeze, create } = Object;
michael@0	20	const LOCAL_URI_SCHEMES = ['resource', 'data'];
michael@0	21
michael@0	22	function isLocalURL(item) {
michael@0	23	try {
michael@0	24	return LOCAL_URI_SCHEMES.indexOf(URL(item).scheme) > -1;
michael@0	25	}
michael@0	26	catch(e) {}
michael@0	27
michael@0	28	return false;
michael@0	29	}
michael@0	30
michael@0	31	function Style({ source, uri, type }) {
michael@0	32	source = source == null ? null : freeze([].concat(source));
michael@0	33	uri = uri == null ? null : freeze([].concat(uri));
michael@0	34	type = type == null ? "author" : type;
michael@0	35
michael@0	36	if (source && !source.every(isString))
michael@0	37	throw new Error('Style.source must be a string or an array of strings.');
michael@0	38
michael@0	39	if (uri && !uri.every(isLocalURL))
michael@0	40	throw new Error('Style.uri must be a local URL or an array of local URLs');
michael@0	41
michael@0	42	if (type && !isTypeValid(type))
michael@0	43	throw new Error('Style.type must be "agent", "user" or "author"');
michael@0	44
michael@0	45	return freeze(create(Style.prototype, {
michael@0	46	"source": { value: source, enumerable: true },
michael@0	47	"uri": { value: uri, enumerable: true },
michael@0	48	"type": { value: type, enumerable: true }
michael@0	49	}));
michael@0	50	};
michael@0	51
michael@0	52	exports.Style = Style;
michael@0	53
michael@0	54	attachTo.define(Style, function (style, window) {
michael@0	55	if (style.uri) {
michael@0	56	for (let uri of style.uri)
michael@0	57	loadSheet(window, uri, style.type);
michael@0	58	}
michael@0	59
michael@0	60	if (style.source) {
michael@0	61	let uri = "data:text/css;charset=utf-8,";
michael@0	62
michael@0	63	uri += encodeURIComponent(style.source.join(""));
michael@0	64
michael@0	65	loadSheet(window, uri, style.type);
michael@0	66	}
michael@0	67	});
michael@0	68
michael@0	69	detachFrom.define(Style, function (style, window) {
michael@0	70	if (style.uri)
michael@0	71	for (let uri of style.uri)
michael@0	72	removeSheet(window, uri);
michael@0	73
michael@0	74	if (style.source) {
michael@0	75	let uri = "data:text/css;charset=utf-8,";
michael@0	76
michael@0	77	uri += encodeURIComponent(style.source.join(""));
michael@0	78
michael@0	79	removeSheet(window, uri, style.type);
michael@0	80	}
michael@0	81	});