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/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
* 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/. */
var CustomTitlebar = {
init() {
this._readPref();
Services.prefs.addObserver(this._prefName, this);
this._initialized = true;
this._update();
},
allowedBy(condition, allow) {
if (allow) {
if (condition in this._disallowed) {
delete this._disallowed[condition];
this._update();
}
} else if (!(condition in this._disallowed)) {
this._disallowed[condition] = null;
this._update();
}
},
get systemSupported() {
let isSupported = false;
switch (AppConstants.MOZ_WIDGET_TOOLKIT) {
case "windows":
case "cocoa":
isSupported = true;
break;
case "gtk":
isSupported = window.matchMedia("(-moz-gtk-csd-available)").matches;
break;
}
delete this.systemSupported;
return (this.systemSupported = isSupported);
},
get enabled() {
return document.documentElement.hasAttribute("customtitlebar");
},
observe(subject, topic) {
if (topic == "nsPref:changed") {
this._readPref();
}
},
_initialized: false,
_disallowed: {},
_prefName: "browser.tabs.inTitlebar",
_readPref() {
let hiddenTitlebar = Services.appinfo.drawInTitlebar;
this.allowedBy("pref", hiddenTitlebar);
},
_update() {
if (!this._initialized) {
return;
}
let allowed =
this.systemSupported &&
!window.fullScreen &&
!Object.keys(this._disallowed).length;
document.documentElement.toggleAttribute("customtitlebar", allowed);
if (AppConstants.platform == "macosx") {
document.documentElement.toggleAttribute("drawtitle", !allowed);
}
ToolbarIconColor.inferFromText("customtitlebar", allowed);
TabBarVisibility.update(true);
},
uninit() {
Services.prefs.removeObserver(this._prefName, this);
},
};
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