Adding upstream version 2.12.1.upstream/2.12.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 78 insertions, 0 deletions

diff --git a/public/js/icinga/eventlistener.js b/public/js/icinga/eventlistener.js
new file mode 100644
index 0000000..678e775
--- /dev/null
+++ b/public/js/icinga/eventlistener.js
@@ -0,0 +1,78 @@
+/*! Icinga Web 2 | (c) 2014 Icinga Development Team | GPLv2+ */
+
+/**
+ * EventListener contains event handlers and can bind / and unbind them from
+ * event emitting objects
+ */
+(function(Icinga, $) {
+
+    "use strict";
+
+    var EventListener = function (icinga) {
+        this.icinga = icinga;
+        this.handlers = [];
+    };
+
+    /**
+     * Add an handler to this EventLister
+     *
+     * @param evt   {String}    The name of the triggering event
+     * @param cond  {String}    The filter condition
+     * @param fn    {Function}  The event handler to execute
+     * @param scope {Object}    The optional 'this' of the called function
+     */
+    EventListener.prototype.on = function(evt, cond, fn, scope) {
+        if (typeof cond === 'function') {
+            scope = fn;
+            fn = cond;
+            cond = 'body';
+        }
+        this.icinga.logger.debug('on: ' + evt + '(' + cond + ')');
+        this.handlers.push({ evt: evt, cond: cond, fn: fn, scope: scope });
+    };
+
+    /**
+     * Bind all listeners to the given event emitter
+     *
+     * All event handlers will be executed when the associated event is
+     * triggered on the given Emitter.
+     *
+     * @param emitter   {String}   An event emitter that supports the function
+     *                             'on' to register listeners
+     */
+    EventListener.prototype.bind = function (emitter) {
+        var _this = this;
+
+        if (typeof emitter.jquery === 'undefined') {
+            emitter = $(emitter);
+        }
+
+        $.each(this.handlers, function(i, handler) {
+            _this.icinga.logger.debug('bind: ' + handler.evt + '(' + handler.cond + ')');
+            emitter.on(
+                handler.evt, handler.cond,
+                {
+                    self: handler.scope || emitter,
+                    icinga: _this.icinga
+                }, handler.fn
+            );
+        });
+    };
+
+    /**
+     * Unbind all listeners from the given event emitter
+     *
+     * @param emitter   {String}    An event emitter that supports the function
+     *                              'off' to un-register listeners.
+     */
+    EventListener.prototype.unbind = function (emitter) {
+        var _this = this;
+        $.each(this.handlers, function(i, handler) {
+            _this.icinga.logger.debug('unbind: ' + handler.evt + '(' + handler.cond + ')');
+            emitter.off(handler.evt, handler.cond, handler.fn);
+        });
+    };
+
+    Icinga.EventListener = EventListener;
+
+}) (Icinga, jQuery);