smokephil/ardour
1
0
Fork 0
mirror of https://github.com/Ardour/ardour.git synced 2025-12-09 16:24:57 +01:00
Code Issues Projects Releases Wiki Activity

WebSockets: implement a JavaScript object-oriented client API

Browse source 
Replace previous callback based basic client with an easier
to use object-oriented API that further abstracts the low level
details of the WebSockets Server surface messaging protocol.

All built-in web surface demos were updated to use the new API.
This commit is contained in:
Luciano Iam 2020-05-29 11:37:34 +02:00 • committed by Robin Gareus
parent 5296ed141f
commit ae4df127ad
No known key found for this signature in database
GPG key ID: A090BCE02CF57F04
18 changed files with 812 additions and 361 deletions
Download patch file Download diff file Expand all files Collapse all files

64
share/web_surfaces/shared/base/observable.js Normal file
View file

@ -0,0 +1,64 @@
/*
* Copyright © 2020 Luciano Iam <lucianito@gmail.com>
*
* 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 2 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
export class Observable {
constructor () {
this._observers = {};
}
addObserver (property, observer) {
// property=undefined means the caller is interested in observing all properties
if (!(property in this._observers)) {
this._observers[property] = [];
}
this._observers[property].push(observer);
}
removeObserver (property, observer) {
// property=undefined means the caller is not interested in any property anymore
if (typeof(property) == 'undefined') {
for (const property in this._observers) {
this.removeObserver(property, observer);
}
} else {
const index = this._observers[property].indexOf(observer);
if (index > -1) {
this._observers[property].splice(index, 1);
}
}
}
notifyObservers (property) {
// always notify observers that observe all properties
if (undefined in this._observers) {
for (const observer of this._observers[undefined]) {
observer(this, property);
}
}
if (property in this._observers) {
for (const observer of this._observers[property]) {
observer(this);
}
}
}
}