diff options
Diffstat (limited to 'common/observables.js')
| -rw-r--r-- | common/observables.js | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/common/observables.js b/common/observables.js deleted file mode 100644 index e73b9f7..0000000 --- a/common/observables.js +++ /dev/null @@ -1,61 +0,0 @@ -/** - * This file is part of Haketilo. - * - * Function: Facilitate listening to (internal, self-generated) events. - * - * Copyright (C) 2021 Wojtek Kosior - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * As additional permission under GNU GPL version 3 section 7, you - * may distribute forms of that code without the copy of the GNU - * GPL normally required by section 4, provided you include this - * license notice and, in case of non-source distribution, a URL - * through which recipients can access the Corresponding Source. - * If you modify file(s) with this exception, you may extend this - * exception to your version of the file(s), but you are not - * obligated to do so. If you do not wish to do so, delete this - * exception statement from your version. - * - * As a special exception to the GPL, any HTML file which merely - * makes function calls to this code, and for that purpose - * includes it by reference shall be deemed a separate work for - * copyright law purposes. If you modify this code, you may extend - * this exception to your version of the code, but you are not - * obligated to do so. If you do not wish to do so, delete this - * exception statement from your version. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <https://www.gnu.org/licenses/>. - * - * I, Wojtek Kosior, thereby promise not to sue for violation of this file's - * license. Although I request that you do not make use of this code in a - * proprietary program, I am not going to enforce this in court. - */ - -#EXPORT (value=undefined) => ({value, listeners: new Set()}) AS make -#EXPORT (observable, cb) => observable.listeners.add(cb) AS subscribe -#EXPORT (observable, cb) => observable.listeners.delete(cb) AS unsubscribe - -const silent_set = (observable, value) => observable.value = value; -#EXPORT silent_set - -const broadcast = (observable, ...values) => - observable.listeners.forEach(cb => cb(...values)); -#EXPORT broadcast - -function set(observable, value) -{ - const old_value = observable.value; - silent_set(observable, value); - broadcast(observable, value, old_value); -} -#EXPORT set |