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Allow node to register multiple close handlers

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Closes #573
This commit is contained in:
Nick O'Leary
2015-03-04 21:42:11 +00:00
parent cef378d820
commit 34364f5627
2 changed files with 55 additions and 13 deletions
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38
red/nodes/Node.js
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@@ -28,6 +28,8 @@ function Node(n) {
this.id = n.id;
this.type = n.type;
this.z = n.z;
this._closeCallbacks = [];
if (n.name) {
this.name = n.name;
}
@@ -64,23 +66,35 @@ Node.prototype._on = Node.prototype.on;
Node.prototype.on = function(event, callback) {
var node = this;
if (event == "close") {
if (callback.length == 1) {
this.close = function() {
return when.promise(function(resolve) {
callback.call(node, function() {
resolve();
});
});
};
} else {
this.close = callback;
}
this._closeCallbacks.push(callback);
} else {
this._on(event, callback);
}
};
Node.prototype.close = function() {};
Node.prototype.close = function() {
var promises = [];
var node = this;
for (var i=0;i<this._closeCallbacks.length;i++) {
var callback = this._closeCallbacks[i];
if (callback.length == 1) {
promises.push(
when.promise(function(resolve) {
callback.call(node, function() {
resolve();
});
})
);
} else {
callback.call(node);
}
}
if (promises.length > 0) {
return when.settle(promises);
} else {
return;
}
};
function constructUniqueIdentifier() {
return (1+Math.random()*4294967295).toString(16);