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/*! Icinga Web 2 | (c) 2013 Icinga Development Team | GPLv2+ */
/**
* This is how we bootstrap JS code in our modules
*/
(function(Icinga, $) {
'use strict';
Icinga.Module = function (icinga, name, prototyp) {
// The Icinga instance
this.icinga = icinga;
// Applied event handlers
this.handlers = [];
// Event handlers registered by this module
this.registeredHandlers = [];
// The module name
this.name = name;
// The JS prototype for this module
this.prototyp = prototyp;
// Once initialized, this will be an instance of the modules prototype
this.object = {};
// Initialize this module
this.initialize();
};
Icinga.Module.prototype = {
initialize: function () {
if (typeof this.prototyp !== 'function') {
this.icinga.logger.error(
'Unable to load module "' + this.name + '", constructor is missing'
);
return false;
}
try {
// The constructor of the modules prototype must be prepared to get an
// instance of Icinga.Module
this.object = new this.prototyp(this);
this.applyHandlers();
} catch(e) {
this.icinga.logger.error(
'Failed to load module ' + this.name + ': ',
e
);
return false;
}
// That's all, the module is ready
this.icinga.logger.debug(
'Module ' + this.name + ' has been initialized'
);
return true;
},
/**
* Register this modules event handlers
*/
on: function (event, filter, handler) {
if (typeof handler === 'undefined') {
handler = filter;
filter = '.module-' + this.name;
} else {
filter = '.module-' + this.name + ' ' + filter;
}
this.registeredHandlers.push({event: event, filter: filter, handler: handler});
},
applyHandlers: function () {
var _this = this;
$.each(this.registeredHandlers, function (key, on) {
_this.bindEventHandler(
on.event,
on.filter,
on.handler
);
});
_this = null;
return this;
},
/**
* Effectively bind the given event handler
*/
bindEventHandler: function (event, filter, handler) {
var _this = this;
this.icinga.logger.debug('Bound ' + filter + ' .' + event + '()');
this.handlers.push([event, filter, handler]);
$(document).on(event, filter, handler.bind(_this.object));
},
/**
* Unbind all event handlers bound by this module
*/
unbindEventHandlers: function () {
$.each(this.handlers, function (idx, handler) {
$(document).off(handler[0], handler[1], handler[2]);
});
},
/**
* Allow to destroy and clean up this module
*/
destroy: function () {
this.unbindEventHandlers();
if (typeof this.object.destroy === 'function') {
this.object.destroy();
}
this.object = null;
this.icinga = null;
this.prototyp = null;
}
};
}(Icinga, jQuery));
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