1 files changed, 134 insertions, 0 deletions
diff --git a/public/js/icinga/module.js b/public/js/icinga/module.js
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+++ b/public/js/icinga/module.js
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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));