Gmail-Like Incremental Search //JavaScript Class

jonasraoni (Jonas Raoni Soares Silva) — Fri, 09 Sep 2005 07:41:46 GMT

Implements a GMail-like auto-complete.

[UPDATED CODE AND HELP CAN BE FOUND HERE]

@REQUIRES Event-Listener



//Requires http://www.jsfromhell.com/geral/event-listener



//+ Jonas Raoni Soares Silva

//@ http://jsfromhell.com/dhtml/incremental-search [v1.0]



IncrementalSearch = function( input, callback, className ){

	var i, o = ( o = this, o.l = [], o.i = input, o.c = null, o.s = { e: null, i: -1 }, o.f = callback || function(){}, o.n = className || "", o );

	for( i in { keydown: 0, focus: 0, blur: 0, keyup: 0, keypress: 0 } )

		addEventListener( o.i, i, function( e ){ o.handler.call( o, e ); } );

};

with( { p: IncrementalSearch.prototype } ){

	(p.constructor.fadeAway = function( o ){

		o instanceof Object ? ( this.trash = this.trash || [] ).push( o ) && setTimeout( this.fadeAway, 200 ) : arguments.callee.c.trash.pop().hide();

	}).c = p.constructor;

	p.callEvent = function( e ){ this[e] && this[e].apply( this, [].slice.call( arguments, 1 ) ); };

	p.highlite = function( e ){ ( this.s.e && ( this.s.e.className = "normal" ), ( this.s = { e: e, i: e.listindex } ).e.className += " highlited", this.callEvent( "onhighlite", this.l[ this.s.i ], this.s.e.d ) ); };

	p.select = function(){ this.s.i + 1 && ( this.i.value = this.l[ this.s.i ], this.callEvent( "onselect", this.i.value, this.s.e.d ), this.hide() ); };

	p.hide = function(){ ( this.c && this.c.parentNode.removeChild( this.c ), this.c = null, this.l = [], this.s = { e: null, i: -1 }, this.callEvent( "onhide" ) ); };

	p.next = function(){ var e = ( e = this.s.e ) ? e.nextSibling || e.parentNode.firstChild : null; e && this.highlite( e ); };

	p.previous = function(){ var e = ( e = this.s.e ) ? e.previousSibling || e.parentNode.lastChild : null; e && this.highlite( e ); };

	p.handler = function( evt ){

		var o = this, t = evt.type, k = evt.key, e = /span/i.test( ( e = evt.target ).tagName ) ? e.parentNode : e;

		t == "keyup" ? k != 40 && k != 38 && k != 13 && o.show()

		: t == "keydown" ? ( k == 40 && o.next() ) || ( k == 38 && o.previous() )

		: t == "keypress" ? k == 13 && !evt.preventDefault() && o.select()

		: t == "blur" ? o.constructor.fadeAway( o )

		: t == "click" ? o.select()

		: t == "focus" ? o.show()

		: o.highlite( e );

	};

	p.show = function(){

		var cS, found = 0, o = this, i = o.i, iV = i.value, d = document, c = ( o.hide(), o.c = d.body.appendChild( d.createElement( "div" ) ) );

		( c.className = o.n, cS = c.style, cS.display = "none", cS.position = "absolute", o.callEvent( "onshow" ) );

		o.f.call( function( s, x, data ){

			if( !( x.length == undefined ? ( x = [x] ) : x ).length )

				return;

			var j, l = 0, i = o.l.length, e = c.appendChild( d.createElement( "div" ) );

			for( j in ( o.l[i] = s, e.className = "normal", e.d = data, e.listindex = i, !found && i == o.s.i && ++found && o.highlite( e ), x ) )

				e.appendChild( d.createTextNode( s.substring( l, x[j] ) ) ).parentNode.appendChild( d.createElement( "span" ) ).appendChild( d.createTextNode( s.substring( x[j], l = x[j] + iV.length ) ) ).parentNode.className = "selectedText";

			for( x in ( e.appendChild( d.createTextNode( s.substr( l ) ) ), { click: 0, mouseover: 0 } ) )

				addEventListener( e, x, function( e ){ o.handler.call( o, e ); } );

		}, iV );

		if( !c.childNodes.length )

			return o.hide();

		for( var x = i.offsetLeft, y = i.offsetTop + i.offsetHeight; i = i.offsetParent; x += i.offsetLeft, y += i.offsetTop );

		( cS.display = "block", cS.left = x + "px", cS.top = y + "px", !found && o.highlite( c.firstChild ) );

	};

}

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Gmail-Like Incremental Search //JavaScript Class