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-rw-r--r--addon-sdk/source/lib/sdk/stylesheet/style.js71
1 files changed, 71 insertions, 0 deletions
diff --git a/addon-sdk/source/lib/sdk/stylesheet/style.js b/addon-sdk/source/lib/sdk/stylesheet/style.js
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+++ b/addon-sdk/source/lib/sdk/stylesheet/style.js
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+/* 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";
+
+module.metadata = {
+ "stability": "experimental"
+};
+
+const { Cc, Ci } = require("chrome");
+const { Class } = require("../core/heritage");
+const { URL, isLocalURL } = require('../url');
+const events = require("../system/events");
+const { loadSheet, removeSheet, isTypeValid } = require("./utils");
+const { isString } = require("../lang/type");
+const { attachTo, detachFrom } = require("../content/mod");
+const { data } = require('../self');
+
+const { freeze, create } = Object;
+
+function Style({ source, uri, type }) {
+ source = source == null ? null : freeze([].concat(source));
+ uri = uri == null ? null : freeze([].concat(uri));
+ type = type == null ? "author" : type;
+
+ if (source && !source.every(isString))
+ throw new Error('Style.source must be a string or an array of strings.');
+
+ if (uri && !uri.every(isLocalURL))
+ throw new Error('Style.uri must be a local URL or an array of local URLs');
+
+ if (type && !isTypeValid(type))
+ throw new Error('Style.type must be "agent", "user" or "author"');
+
+ return freeze(create(Style.prototype, {
+ "source": { value: source, enumerable: true },
+ "uri": { value: uri, enumerable: true },
+ "type": { value: type, enumerable: true }
+ }));
+};
+
+exports.Style = Style;
+
+attachTo.define(Style, function (style, window) {
+ if (style.uri) {
+ for (let uri of style.uri)
+ loadSheet(window, data.url(uri), style.type);
+ }
+
+ if (style.source) {
+ let uri = "data:text/css;charset=utf-8,";
+
+ uri += encodeURIComponent(style.source.join(""));
+
+ loadSheet(window, uri, style.type);
+ }
+});
+
+detachFrom.define(Style, function (style, window) {
+ if (style.uri)
+ for (let uri of style.uri)
+ removeSheet(window, data.url(uri));
+
+ if (style.source) {
+ let uri = "data:text/css;charset=utf-8,";
+
+ uri += encodeURIComponent(style.source.join(""));
+
+ removeSheet(window, uri, style.type);
+ }
+});