autocomplete contacts nickname while writting in a comment box.

js/fk.autocomplete.js

@@ -0,0 +1,154 @@
+/**
+ * Friendika people autocomplete
+ *
+ * require jQuery, jquery.textareas
+ */
+ 
+		
+		
+function ACPopup(elm,backend_url){
+	this.idsel=-1;
+	this.element = elm;
+	this.searchText="";
+	this.ready=true;
+	this.kp_timer = false;
+	this.url = backend_url;
+	
+	style = $(elm).offset();
+	w = $(elm).width();
+	h = $(elm).height();
+	style.top=style.top+h;
+	style.height = '150px';
+	style.width = w;
+	style.border = '1px solid red';
+	style.background = '#cccccc';
+	style.position = 'absolute';
+	style.overflow = 'auto';
+	style['z-index'] = '100000';
+	
+	this.cont = $("<div class='acpopup'></div>");
+	this.cont.css(style);
+	
+	$(elm).after(this.cont);
+}
+ACPopup.prototype.close = function(){
+	$(this.cont).remove();
+	this.ready=false;
+}
+ACPopup.prototype.search = function(text){
+	this.searchText=text;
+	/*if (this.kp_timer) clearTimeout(this.kp_timer);
+	this.kp_timer = setTimeout( this._search, 1000);*/
+	this._search();
+}
+ACPopup.prototype._search = function(){	
+
+	var that = this;
+	var postdata = {
+		start:0,
+		count:100,
+		search:this.searchText,
+	}
+	
+	$.ajax({
+		type:'POST',
+		url: this.url,
+		data: postdata,
+		dataType: 'json',
+		success:function(data){
+			that.cont.html("");
+			$(data.items).each(function(){
+				if (this.type=="c"){
+					html = "<img src='{0}' height='16px' width='16px'>{1} ({2})".format(this.photo, this.name, this.nick)
+					that.add(html, this.nick);
+				}
+			});			
+		}
+	});
+	
+}
+ACPopup.prototype.add = function(label, value){
+	var that=this;
+	var elm = $("<div class='acpopupitem' title='"+value+"'>"+label+"</div>");
+	elm.click(function(e){
+		t = $(this).attr('title');
+		el=$(that.element);
+		sel = el.getSelection();
+		sel.start = sel.start- that.searchText.length;
+		el.setSelection(sel.start,sel.end).replaceSelectedText(t).collapseSelection(false);
+		that.close();
+	});
+	$(this.cont).append(elm);
+}
+ACPopup.prototype.onkey = function(event){
+	if (event.keyCode == '13' && this.idsel>-1) {
+		this.cont.children()[this.idsel].click();
+		event.preventDefault();
+	}
+	if (event.keyCode == '38') { //cursor up
+		cmax = this.cont.children().size()-1;
+		this.idsel--;
+		if (this.idsel<0) this.idsel=cmax;
+		event.preventDefault();
+	}
+	if (event.keyCode == '40') { //cursor down
+		cmax = this.cont.children().size()-1;
+		this.idsel++;
+		if (this.idsel>cmax) this.idsel=0;
+		event.preventDefault();
+	}
+	
+	if (event.keyCode == '38' || event.keyCode == '40' ) {
+		this.cont.children().css({background:'#cccccc'}).removeClass('selected');
+		$(this.cont.children()[this.idsel]).css({background:'#ccccff'}).addClass('selected');
+	}
+	
+	if (event.keyCode == '27') { //ESC
+		this.close();
+	}
+}
+
+function ContactAutocomplete(element,backend_url){
+	this.pattern=/@([^ \n]+)$/;
+	this.popup=null;
+	var that = this;
+	
+	$(element).keydown(function(event){
+		if (that.popup!==null) that.popup.onkey(event);
+	});
+	
+	$(element).keyup(function(event){
+		cpos = $(this).getSelection();
+		if (cpos.start==cpos.end){
+			match = $(this).val().substring(0,cpos.start).match(that.pattern);
+			if (match!==null){
+				if (that.popup===null){
+					that.popup = new ACPopup(this, backend_url);
+				}
+				if (that.popup.ready && match[1]!==that.popup.searchText) that.popup.search(match[1]);
+				if (!that.popup.ready) that.popup=null;
+				
+			} else {
+				if (that.popup!==null) {that.popup.close(); that.popup=null;}
+			}
+			
+			
+		}
+	});		
+	
+}
+
+/**
+ * jQuery plugin 'contact_autocomplete'
+ */
+(function( $ ){
+  $.fn.contact_autocomplete = function(backend_url) {
+    this.each(function(){
+		new ContactAutocomplete(this, backend_url);
+	});
+  };
+})( jQuery );
+
+
+
+