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45 lines
1.6 KiB
JavaScript
45 lines
1.6 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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var EXPORTED_SYMBOLS = ["LightweightThemeConsumer"];
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var Cc = Components.classes;
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var Ci = Components.interfaces;
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Components.utils.import("resource://gre/modules/Services.jsm");
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Components.utils.import("resource://gre/modules/LightweightThemeManager.jsm");
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function LightweightThemeConsumer(aDocument) {
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this._doc = aDocument;
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Services.obs.addObserver(this, "lightweight-theme-styling-update", false);
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Services.obs.addObserver(this, "lightweight-theme-apply", false);
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this._update(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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this._update(JSON.parse(aData));
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else if (aTopic == "lightweight-theme-apply")
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this._update(LightweightThemeManager.currentThemeForDisplay);
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},
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destroy: function () {
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Services.obs.removeObserver(this, "lightweight-theme-styling-update");
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Services.obs.removeObserver(this, "lightweight-theme-apply");
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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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let active = !!aData.headerURL;
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let msg = active ? { type: "LightweightTheme:Update", data: aData } :
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{ type: "LightweightTheme:Disable" };
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Services.androidBridge.handleGeckoMessage(msg);
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}
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}
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