made ajax quicksearch its own object

This makes it possible for plugin and template authors to overwrite or
extend the quicksearch JavaScript logic.

lib/scripts/ajax.js

@@ -5,30 +5,58 @@
  * @author   Andreas Gohr <andi@splitbrain.org>
  * @author   Adrian Lang <lang@cosmocode.de>
  */
-addInitEvent(function () {
+var ajax_quicksearch = {
 
-    var inID  = 'qsearch__in';
-    var outID = 'qsearch__out';
+    inObj:   null,
+    outObj:  null,
+    sackObj: null,
+    delay:   null,
 
-    var inObj  = document.getElementById(inID);
-    var outObj = document.getElementById(outID);
+    init: function(inID, outID) {
 
-    // objects found?
-    if (inObj === null){ return; }
-    if (outObj === null){ return; }
+        this.inObj  = $(inID);
+        this.outObj = $(outID);
 
-    function clear_results(){
-        outObj.style.display = 'none';
-        outObj.innerHTML = '';
-    }
+        // objects found?
+        if (this.inObj  === null) return;
+        if (this.outObj === null) return;
+
+        // prepare AJAX
+        this.sackObj = new sack(DOKU_BASE + 'lib/exe/ajax.php');
+        this.sackObj.AjaxFailedAlert = '';
+        this.sackObj.encodeURIString = false;
+        this.sackObj.onCompletion = ajax_quicksearch.onCompletion;
+
+        // attach eventhandler to search field
+        this.delay = new Delay(function () {
+            ajax_quicksearch.clear_results();
+            var value = ajax_quicksearch.inObj.value;
+            if(value === ''){ return; }
+            ajax_quicksearch.sackObj.runAJAX('call=qsearch&q=' + encodeURI(value));
+        });
+
+        addEvent(this.inObj, 'keyup', function () {
+            ajax_quicksearch.clear_results();
+            ajax_quicksearch.delay.start();
+        });
+
+        // attach eventhandler to output field
+        addEvent(this.outObj, 'click', function () {
+            ajax_quicksearch.outObj.style.display = 'none';
+        });
+    },
 
-    var sack_obj = new sack(DOKU_BASE + 'lib/exe/ajax.php');
-    sack_obj.AjaxFailedAlert = '';
-    sack_obj.encodeURIString = false;
-    sack_obj.onCompletion = function () {
-        var data = sack_obj.response;
+    clear_results: function(){
+        ajax_quicksearch.outObj.style.display = 'none';
+        ajax_quicksearch.outObj.innerHTML = '';
+    },
+
+    onCompletion: function() {
+        var data = this.response; // 'this' is sack context
         if (data === '') { return; }
 
+        var outObj = ajax_quicksearch.outObj;
+
         outObj.innerHTML = data;
         outObj.style.display = 'block';
         outObj.style['white-space'] = 'nowrap';
@@ -79,19 +107,12 @@ addInitEvent(function () {
                 nsR = links[i].innerText.indexOf(')');
             }
         }
+    }
 
-    };
-
-    // attach eventhandler to search field
-    var delay = new Delay(function () {
-        clear_results();
-        var value = inObj.value;
-        if(value === ''){ return; }
-        sack_obj.runAJAX('call=qsearch&q=' + encodeURI(value));
-    });
+};
 
-    addEvent(inObj, 'keyup', function () {clear_results(); delay.start(); });
 
-    // attach eventhandler to output field
-    addEvent(outObj, 'click', function () {outObj.style.display = 'none'; });
+addInitEvent(function(){
+    ajax_quicksearch.init('qsearch__in','qsearch__out');
 });
+