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