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/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2014 TIBCO Software Inc. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see .
*/
define(["jquery"], function($) {
var Event = function(name) {
if (!this instanceof Event) {
return new Event(name);
}
this.status = 'default';
this.name = name;
this.subscribers = [];
};
Event.prototype = {
getName: function() {
return this.name;
},
getStatus: function() {
return this.status;
},
hasFinished: function() {
return this.status === 'finished';
},
subscribe: function(subscriber) {
if (!this.hasFinished()) {
this.subscribers.push(subscriber);
} else {
if (subscriber.keep) {
this.subscribers.push(subscriber);
}
this.processSubscriber(subscriber);
}
},
trigger: function(data) {
var i, ln = this.subscribers.length;
for (i = 0; i < ln; i++) {
i = i - this.processSubscriber(this.subscribers[i], data);
}
this.status = 'finished';
return this;
},
reset: function() {
this.status = 'default';
},
processSubscriber: function(subscriber, data) {
var i, ln = this.subscribers.length, args = subscriber.args || [];
args.push(data);
subscriber.callback.apply(subscriber.ctx, args);
if (!subscriber.keep) {
for (i = 0; i < ln; i++) {
if (this.subscribers[i] === subscriber) {
this.subscribers.splice(i,1);
return 1;
}
}
}
return 0;
}
};
var EventManager = function(debug) {
this._events = {};
this.debug = debug;
};
EventManager.prototype = {
/**
* options = {name: string, callback: function, thisContext: object, keep: boolean}
*/
subscribeToEvent: function (o) {
var it = this,
evtNames = this._getEventNames(o.name);
$.each(evtNames, function(i, evtName) {
it.registerEvent(evtName).subscribe({
callback: o.callback,
ctx: o.thisContext,
keep: o.keep
});
});
},
registerEvent: function (evtName) {
if (!this._events[evtName]) {
this._events[evtName] = new Event(evtName);
}
return this._events[evtName];
},
triggerEvent: function (evtName, evtData) {
if (this._events[evtName]) {
this.debug && console.log("triggering event: " + evtName);
this._events[evtName].trigger(evtData);
}
},
// internal functions
_getEventNames: function (evtNames) {
var result = [], tokens, i, ln;
if (evtNames && typeof(evtNames) === 'string') {
tokens = evtNames.split(',');
for (i = 0, ln = tokens.length; i < ln; i++) {
result.push(tokens[i].replace(/^\s+|\s+$/g, ''));
}
}
return result;
}
};
return EventManager;
});
