signal.js 1.83 KiB
/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2012 Mathias Gottschlag <mgottschlag@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, see <http://www.gnu.org/licenses/>.
*********************************************************************/
/**
* Class which manages connections to a signal and allows for signal/slot event
* handling.
* @class
*/
function Signal() {
this.connected = [];
}
/**
* Method which connects another handler to the signal.
*
* @param f Function which shall be added to the signal.
*/
Signal.prototype.connect = function(f) {
this.connected.push(f);
};
/**
* Method which disconnects a function from the signal which as previously been
* registered with connect().
*
* @param f Function which shall be removed from the signal.
*/
Signal.prototype.disconnect = function(f) {
var index = this.connected.indexOf(f);
if (index == -1) {
return;
}
this.connected.splice(index, 1);
};
/**
* Calls all functions attached to this signals with all parameters passed to
* this function.
*/
Signal.prototype.emit = function() {
var signalArguments = arguments;
this.connected.forEach(function(f) {
f.apply(null, signalArguments);
});
};