const PayloadSources = {
    VIEW: "view",
    SERVER: "server"
};


function Dispatcher() {
    this.callbacks = [];
}
Dispatcher.prototype.register = function (callback) {
    this.callbacks.push(callback);
};
Dispatcher.prototype.unregister = function (callback) {
    var index = this.callbacks.indexOf(callback);
    if (index >= 0) {
        this.callbacks.splice(index, 1);
    }
};
Dispatcher.prototype.dispatch = function (payload) {
    console.debug("dispatch", payload);
    for (var i = 0; i < this.callbacks.length; i++) {
        this.callbacks[i](payload);
    }
};


AppDispatcher = new Dispatcher();
AppDispatcher.dispatchViewAction = function (action) {
    action.source = PayloadSources.VIEW;
    this.dispatch(action);
};
AppDispatcher.dispatchServerAction = function (action) {
    action.source = PayloadSources.SERVER;
    this.dispatch(action);
};