delay for search after typing

README.md

@@ -96,6 +96,7 @@ Template.foo.settings = function() {
 - `sort`: (default `false`) Whether to sort the results before applying the limit. For good performance on large collections, this should be turned on only for server-side searches where an index can be used.
 - `noMatchTemplate`: (optional) A template to display when nothing matches. This template can use the [reactive functions on the AutoComplete object](autocomplete-client.coffee) to display a specific message, or be [assigned mouse/keyboard events](http://docs.meteor.com/#eventmaps) for user interaction.
 - `callback`: (optional) A function which is called when an item is selected with arguments `(doc, element)`, corresponding to the document of the selected item and the active input field.
+- `inputDelay`: (optional) Delay in milliseconds to do the search after typing. Default: 500
 
 Default matcher arguments: the default behavior is to create a regex against the field to be matched, which will be constructed using the arguments below.
 

autocomplete-client.coffee

@@ -62,6 +62,7 @@ class @AutoComplete
   constructor: (settings) ->
     @limit = settings.limit || 5
     @position = settings.position || "bottom"
+    @inputDelay = settings.inputDelay || 500
 
     @rules = settings.rules
     validateRule(rule) for rule in @rules
@@ -156,7 +157,17 @@ class @AutoComplete
 
       # Did filter change?
       if matches and @filter isnt matches[2]
-        @setFilter(matches[2])
+
+        # clear filter without waiting
+        if matches[2] is ''
+          @setFilter(matches[2])
+        else
+          clearTimeout @delayTimeout if @delayTimeout
+
+          @delayTimeout = setTimeout =>
+            @setFilter(matches[2])
+          , @inputDelay
+
         breakLoop = true
 
       break if breakLoop