Refs #2538: Added Elggy event system. Javascript boot sequence mimics PHP.

git-svn-id: http://code.elgg.org/elgg/trunk@7186 36083f99-b078-4883-b0ff-0f9b5a30f544

1 files changed, 60 insertions, 0 deletions

diff --git a/engine/js/classes/ElggPriorityList.js b/engine/js/classes/ElggPriorityList.js
new file mode 100644
index 000000000..521fbbb64
--- /dev/null
+++ b/engine/js/classes/ElggPriorityList.js
@@ -0,0 +1,60 @@
+elgg.ElggPriorityList = function() {
+	this.length = 0;
+	this.priorities_ = [];
+};
+
+elgg.ElggPriorityList.prototype.insert = function(obj, opt_priority) {
+	if (opt_priority == undefined) {
+		opt_priority = 500;
+	} 
+
+	opt_priority = parseInt(opt_priority);
+	if (opt_priority < 0) {
+		opt_priority = 0;
+	}
+	
+	if (this.priorities_[opt_priority] == undefined) {
+		this.priorities_[opt_priority] = [];
+	}
+	
+	this.priorities_[opt_priority].push(obj);
+	this.length++;
+};
+
+elgg.ElggPriorityList.prototype.forEach = function(callback) {
+	elgg.assertTypeOf('function', callback);
+
+	var index = 0;
+	for (var p in this.priorities_) {
+		var elems = this.priorities_[p];
+		for (var i in elems) {
+			callback(elems[i], index);
+			index++;
+		}
+	}
+};
+
+elgg.ElggPriorityList.prototype.every = function(callback) {
+	elgg.assertTypeOf('function', callback);
+	
+	var index = 0;
+	for (var p in this.priorities_) {
+		var elems = this.priorities_[p];
+		for (var i in elems) {
+			if (!callback(elems[i], index)) {
+				return false;
+			};
+		}
+	}
+	
+	return true;
+};
+
+elgg.ElggPriorityList.prototype.remove = function(obj) {
+	this.priorities_.forEach(function(elems, priority) {
+		var index;
+		while ((index = elems.indexOf(obj)) != -1) {
+			elems.splice(index, 1);
+		}
+	});
+};
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