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119 lines
4.3 KiB
JavaScript
119 lines
4.3 KiB
JavaScript
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org Code.
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*
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* The Initial Developer of the Original Code is
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* Dao Gottwald <dao@mozilla.com>.
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* Portions created by the Initial Developer are Copyright (C) 2009
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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let EXPORTED_SYMBOLS = ["LightweightThemeConsumer"];
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function LightweightThemeConsumer(aDocument) {
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this._doc = aDocument;
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this._footerId = aDocument.documentElement.getAttribute("lightweightthemesfooter");
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Components.classes["@mozilla.org/observer-service;1"]
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.getService(Components.interfaces.nsIObserverService)
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.addObserver(this, "lightweight-theme-styling-update", false);
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var temp = {};
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Components.utils.import("resource://gre/modules/LightweightThemeManager.jsm", temp);
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this._update(temp.LightweightThemeManager.currentThemeForDisplay);
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}
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LightweightThemeConsumer.prototype = {
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observe: function (aSubject, aTopic, aData) {
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if (aTopic != "lightweight-theme-styling-update")
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return;
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this._update(JSON.parse(aData));
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},
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destroy: function () {
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Components.classes["@mozilla.org/observer-service;1"]
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.getService(Components.interfaces.nsIObserverService)
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.removeObserver(this, "lightweight-theme-styling-update");
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this._doc = null;
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},
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_update: function (aData) {
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if (!aData)
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aData = { headerURL: "", footerURL: "", textcolor: "", accentcolor: "" };
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var root = this._doc.documentElement;
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var active = !!aData.headerURL;
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if (active) {
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root.style.color = aData.textcolor || "black";
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root.style.backgroundColor = aData.accentcolor || "white";
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let [r, g, b] = _parseRGB(this._doc.defaultView.getComputedStyle(root, "").color);
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let luminance = 0.2125 * r + 0.7154 * g + 0.0721 * b;
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root.setAttribute("lwthemetextcolor", luminance <= 110 ? "dark" : "bright");
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root.setAttribute("lwtheme", "true");
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} else {
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root.style.color = "";
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root.style.backgroundColor = "";
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root.removeAttribute("lwthemetextcolor");
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root.removeAttribute("lwtheme");
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}
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_setImage(root, active, aData.headerURL);
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if (this._footerId) {
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let footer = this._doc.getElementById(this._footerId);
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footer.style.backgroundColor = active ? aData.accentcolor || "white" : "";
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_setImage(footer, active, aData.footerURL);
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if (active && aData.footerURL)
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footer.setAttribute("lwthemefooter", "true");
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else
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footer.removeAttribute("lwthemefooter");
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}
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#ifdef XP_MACOSX
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if (active)
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root.setAttribute("drawintitlebar", "true");
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else
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root.removeAttribute("drawintitlebar");
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#endif
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}
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}
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function _setImage(aElement, aActive, aURL) {
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aElement.style.backgroundImage =
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(aActive && aURL) ? 'url("' + aURL.replace('"', '\\"', "g") + '")' : "";
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}
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function _parseRGB(aColorString) {
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var rgb = aColorString.match(/^rgba?\((\d+), (\d+), (\d+)/);
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rgb.shift();
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return rgb.map(function (x) parseInt(x));
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}
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