The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/addon-sdk/source/lib/sdk/stylesheet/style.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,81 @@
     1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.7 +"use strict";
     1.8 +
     1.9 +module.metadata = {
    1.10 +  "stability": "experimental"
    1.11 +};
    1.12 +
    1.13 +const { Cc, Ci } = require("chrome");
    1.14 +const { Class } = require("../core/heritage");
    1.15 +const { ns } = require("../core/namespace");
    1.16 +const { URL } = require('../url');
    1.17 +const events = require("../system/events");
    1.18 +const { loadSheet, removeSheet, isTypeValid } = require("./utils");
    1.19 +const { isString } = require("../lang/type");
    1.20 +const { attachTo, detachFrom, getTargetWindow } = require("../content/mod");
    1.21 +
    1.22 +const { freeze, create } = Object;
    1.23 +const LOCAL_URI_SCHEMES = ['resource', 'data'];
    1.24 +
    1.25 +function isLocalURL(item) {
    1.26 +  try {
    1.27 +    return LOCAL_URI_SCHEMES.indexOf(URL(item).scheme) > -1;
    1.28 +  }
    1.29 +  catch(e) {}
    1.30 +
    1.31 +  return false;
    1.32 +}
    1.33 +
    1.34 +function Style({ source, uri, type }) {
    1.35 +  source = source == null ? null : freeze([].concat(source));
    1.36 +  uri = uri == null ? null : freeze([].concat(uri));
    1.37 +  type = type == null ? "author" : type;
    1.38 +
    1.39 +  if (source && !source.every(isString))
    1.40 +    throw new Error('Style.source must be a string or an array of strings.');
    1.41 +
    1.42 +  if (uri && !uri.every(isLocalURL))
    1.43 +    throw new Error('Style.uri must be a local URL or an array of local URLs');
    1.44 +
    1.45 +  if (type && !isTypeValid(type))
    1.46 +    throw new Error('Style.type must be "agent", "user" or "author"');
    1.47 +
    1.48 +  return freeze(create(Style.prototype, {
    1.49 +    "source": { value: source, enumerable: true },
    1.50 +    "uri": { value: uri, enumerable: true },
    1.51 +    "type": { value: type, enumerable: true }
    1.52 +  }));
    1.53 +};
    1.54 +
    1.55 +exports.Style = Style;
    1.56 +
    1.57 +attachTo.define(Style, function (style, window) {
    1.58 +  if (style.uri) {
    1.59 +    for (let uri of style.uri)
    1.60 +      loadSheet(window, uri, style.type);
    1.61 +  }
    1.62 +
    1.63 +  if (style.source) {
    1.64 +    let uri = "data:text/css;charset=utf-8,";
    1.65 +
    1.66 +    uri += encodeURIComponent(style.source.join(""));
    1.67 +
    1.68 +    loadSheet(window, uri, style.type);
    1.69 +  }
    1.70 +});
    1.71 +
    1.72 +detachFrom.define(Style, function (style, window) {
    1.73 +  if (style.uri)
    1.74 +    for (let uri of style.uri)
    1.75 +      removeSheet(window, uri);
    1.76 +
    1.77 +  if (style.source) {
    1.78 +    let uri = "data:text/css;charset=utf-8,";
    1.79 +
    1.80 +    uri += encodeURIComponent(style.source.join(""));
    1.81 +
    1.82 +    removeSheet(window, uri, style.type);
    1.83 +  }
    1.84 +});