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(function () {
var _registered = {};
function _disconnect(sig) {
signals[sig] = null;
delete _registered[sig];
}
Object.defineProperties(signals, {
"emit" : {
value : function(sig, args) {
var sigs = _registered[sig];
var ret = false;
var i = 0;
do {
if (sigs[i].connected) {
ret = sigs[i].callback.apply(this, args) || ret;
i++;
}
else {
sigs.splice(i, 1);
}
} while (i<sigs.length);
if (_registered[sig].length === 0) {
_disconnect(sig);
}
return ret;
}
},
"connect" : {
value : (function () {
var id = 0;
return function(sig, func) {
++id;
if (_registered[sig] === undefined || _registered[sig] === null) {
_registered[sig] = [];
signals[sig] = function () { return signals.emit(sig, arguments); };
}
if (func === null || typeof func !== "function") {
return -1;
}
_registered[sig].push({callback : func, id : id, connected : true });
return id;
};
})()
},
"disconnect" : {
value : function(id) {
var sig, i, sigs;
for (sig in _registered) {
sigs = _registered[sig];
for (i = 0; i<sigs.length; i++) {
if (sigs[i].id == id) {
if (_registered[sig].length === 1) {
_disconnect(sig);
}
else {
sigs[i].connected = false;
}
return true;
}
}
}
return false;
}
},
"disconnectByFunction" : {
value : function(func) {
var sig, i, sigs, ret = false;
for (sig in _registered) {
sigs = _registered[sig];
for (i = 0; i<sigs.length; i++) {
if (sigs[i].callback == func) {
if (_registered[sig].length === 1) {
_disconnect(sig);
}
else {
sigs[i].connected = false;
}
ret = true;
}
}
}
return ret;
}
},
"disconnectByName" : {
value : function (name) {
if (signals[name] !== null && signals[name] !== undefined) {
_disconnect(name);
return true;
}
return false;
}
}
});
})();
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