/* ----- livesearch.js ----- */
/*
 	// +----------------------------------------------------------------------+
 	// | Copyright (c) 2004 Bitflux GmbH                                      |
 	// +----------------------------------------------------------------------+
 	// | Licensed under the Apache License, Version 2.0 (the "License");      |
 	// | you may not use this file except in compliance with the License.     |
	// | You may obtain a copy of the License at                              |
	// | http://www.apache.org/licenses/LICENSE-2.0                           |
	// | Unless required by applicable law or agreed to in writing, software  |
 	// | distributed under the License is distributed on an "AS IS" BASIS,    |
 	// | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or      |
 	// | implied. See the License for the specific language governing         |
	// | permissions and limitations under the License.                       |
 	// +----------------------------------------------------------------------+
 	// | Author: Bitflux GmbH <devel@bitflux.ch>                              |
 	// +----------------------------------------------------------------------+
 	
 	*/
 	var liveSearchReq = false;
 	var t = null;
 	var liveSearchLast = "";
 	var queryTarget = "livesearch_reply?q=";
 	
 	var searchForm = null;
 	var searchInput = null;
 	
 	var isIE = false;
 	
 	
 	var _cache = new Object();
 	
 	var widthOffset=1;
 	
 	function calculateWidth(){
 	}
 	
 	
	function getElementDimensions(elemID) {
	    var base = document.getElementById(elemID);
 	    var offsetTrail = base;
 	    var offsetLeft = 0;
 	    var offsetTop = 0;
 	    var width = 0;
 	   
 	    while (offsetTrail) {
 	        offsetLeft += offsetTrail.offsetLeft;
 	        offsetTop += offsetTrail.offsetTop;
 	        offsetTrail = offsetTrail.offsetParent;
 	    }
 	    if (navigator.userAgent.indexOf("Mac") != -1 &&
 	        typeof document.body.leftMargin != "undefined") {
 	        offsetLeft += document.body.leftMargin;
 	        offsetTop += document.body.topMargin;
 	    }
 	
 	    if(!isIE){
 	    width =  searchInput.offsetWidth-widthOffset*2;
 	    }
 	    else {
 	    width = searchInput.offsetWidth;
 	    }
 	
 	    return { left:offsetLeft,
 	         top:offsetTop,
 	         width: width,
 	             height: base.offsetHeight,
	         bottom: offsetTop + base.offsetHeight,
 	         right : offsetLeft + width};
 	}
 	
 	function liveSearchInit() {
 	    searchInput = document.getElementById('searchGadget');
 	    if (searchInput == null || searchInput == undefined) return
 	//  Only keypress catches repeats in moz/FF but keydown is needed for
 	//  khtml based browsers.
 	    if (navigator.userAgent.indexOf("KHTML") > 0) {
 	        searchInput.addEventListener("keydown",liveSearchKeyPress,false);
 	        searchInput.addEventListener("focus",liveSearchDoSearch,false);
	        searchInput.addEventListener("keydown",liveSearchStart, false);
 	        searchInput.addEventListener("blur",liveSearchHideDelayed,false);
 	    } else if (searchInput.addEventListener) {
 	        searchInput.addEventListener("keypress",liveSearchKeyPress,false);
 	        searchInput.addEventListener("blur",liveSearchHideDelayed,false);
 	        searchInput.addEventListener("keypress",liveSearchStart, false);
 	    } else {
 	        searchInput.attachEvent("onkeydown",liveSearchKeyPress);
 	        searchInput.attachEvent("onkeydown",liveSearchStart);
 	        searchInput.attachEvent("onblur",liveSearchHideDelayed);
 	        isIE = true;
 	    }
 	
 	//  Why doesn't this work in konq, setting it inline does.
	    searchInput.setAttribute("autocomplete","off");
 	
 	    var pos = getElementDimensions('searchGadget');
 	    result = document.getElementById('LSResult');
 	    pos.left = pos.left - result.offsetParent.offsetLeft + pos.width;
 	    result.style.display='none';
	}
 	
 	
 	function liveSearchHideDelayed() {
 	    window.setTimeout("liveSearchHide()",400);
 	}
 	   
 	function liveSearchHide() {
 	    document.getElementById("LSResult").style.display = "none";
 	    var highlight = document.getElementById("LSHighlight");
 	    if (highlight) {
 	        highlight.removeAttribute("id");
 	    }
 	}
 	
 	function getFirstHighlight() {
 	    var set = getHits();
 	    return set[0];
 	}
 	
 	function getLastHighlight() {
 	    var set = getHits();
 	    return set[set.length-1];
 	}
 	
 	function getHits() {
 	    var res = document.getElementById("LSShadow");
 	    var set = res.getElementsByTagName('li');
 	    return set
 	}
 	
 	function findChild(object, specifier) {
 	    var cur = object.firstChild;
 	    try {
 	    while (cur != undefined) {
 	        cur = cur.nextSibling;
 	        if (specifier(cur) == true) return cur;
 	    }
 	    } catch(e) {};
 	    return null;
 	   
 	}
 	
 	function findNext(object, specifier) {
 	 var cur = object;
 	 try {
 	 while (cur != undefined) {
 	
 	    cur = cur.nextSibling;
 	    if (cur.nodeType==3) cur=cur.nextSibling;
 	   
 	    if (cur != undefined) {
 	        if (specifier(cur) == true) return cur;
 	    } else { break }
 	 }
 	 } catch(e) {};
 	 return null;
 	}
 	
 	function findPrev(object, specifier) {
 	 var cur = object;
 	 try {
 	        cur = cur.previousSibling;
 	        if (cur.nodeType==3) cur=cur.previousSibling;
 	        if (cur!=undefined) {
 	            if (specifier(cur) == true)
 	                return cur;
 	        }
 	 } catch(e) {};
 	 return null;
 	}
 	
 	
 	function liveSearchKeyPress(event) {
 	    if (event.keyCode == 40 )
 	    //KEY DOWN
 	    {
 	        highlight = document.getElementById("LSHighlight");
 	        if (!highlight) {
 	            highlight = getFirstHighlight();
	        } else {
 	            highlight.removeAttribute("id");
 	            highlight = findNext(highlight, function (o) {return o.className =="LSRow";});
 	
 	        }
 	        if (highlight) {
 	            highlight.setAttribute("id","LSHighlight");
 	        }
 	        if (!isIE) { event.preventDefault(); }
 	    }
 	    //KEY UP
 	    else if (event.keyCode == 38 ) {
 	        highlight = document.getElementById("LSHighlight");
 	        if (!highlight) {
 	            highlight = getLastHighlight();
 	        }
 	        else {
 	            highlight.removeAttribute("id");
 	            highlight = findPrev(highlight, function (o) {return o.className=='LSRow';});
 	        }
 	        if (highlight) {
 	                highlight.setAttribute("id","LSHighlight");
 	        }
 	        if (!isIE) { event.preventDefault(); }
 	    }
 	    //ESC
 	    else if (event.keyCode == 27) {
 	        highlight = document.getElementById("LSHighlight");
 	        if (highlight) {
 	            highlight.removeAttribute("id");
 	        }
 	        document.getElementById("LSResult").style.display = "none";
 	    }
 	}
 	function liveSearchStart(event) {
 	    if (t) {
 	        window.clearTimeout(t);
 	    }
 	    code = event.keyCode;
 	    if (code!=40 && code!=38 && code!=27 && code!=37 && code!=39) {
 	        t = window.setTimeout("liveSearchDoSearch()",200);
 	    }
 	}
 	
 	function liveSearchDoSearch() {
 	
 	    if (typeof liveSearchRoot == "undefined") {
 	        liveSearchRoot = "";
 	    }
 	    if (typeof liveSearchRootSubDir == "undefined") {
 	        liveSearchRootSubDir = "";
 	    }
 	
 	    if (liveSearchLast != searchInput.value) {
 	    if (liveSearchReq && liveSearchReq.readyState < 4) {
 	        liveSearchReq.abort();
 	    }
 	    if ( searchInput.value == "") {
 	        liveSearchHide();
 	        return false;
 	    }
 	
 	    // Do nothing as long as we have less then two characters -
 	    // the search results makes no sense, and it's harder on the server.
 	    if ( searchInput.value.length < 2) {
 	        liveSearchHide();
 	        return false;
 	    }
 	
 	    // Do we have cached results
 	    var result = _cache[searchInput.value];
 	    if (result) {
 	        showResult(result);
 	        return;
 	    }
 	    liveSearchReq = new XMLHttpRequest();
 	    liveSearchReq.onreadystatechange= liveSearchProcessReqChange;
 	    // need to use encodeURIComponent instead of encodeURI, to escape +
 	    liveSearchReq.open("GET", liveSearchRoot + queryTarget + encodeURIComponent(searchInput.value) );
 	    liveSearchLast = searchInput.value;
 	    liveSearchReq.send(null);
 	    }
 	}
 	
 	function showResult(result) {
 	  var  res = document.getElementById("LSResult");
 	  res.style.display = "block";
 	  var  sh = document.getElementById("LSShadow");
 	  sh.innerHTML = result;
 	}
 	
 	function liveSearchProcessReqChange() {
 	    if (liveSearchReq.readyState == 4) {
 	        if (liveSearchReq.status > 299 || liveSearchReq.status < 200  ||
 	            liveSearchReq.responseText.length < 10) return;
 	    showResult(liveSearchReq.responseText);
 	    _cache[liveSearchLast] = liveSearchReq.responseText;
 	    }
 	}
 	
 	function liveSearchSubmit() {
 	    var highlight = document.getElementById("LSHighlight");
 	   
 	    if (highlight){
 	        target = highlight.getElementsByTagName('a')[0];
 	        window.location = liveSearchRoot + liveSearchRootSubDir + target;
 	        return false;
 	    }
 	    else {
 	        return true;
 	    }
 	}
 	
 	
 	
 	if (window.addEventListener) window.addEventListener("load",liveSearchInit,false);
 	else if (window.attachEvent) window.attachEvent("onload", liveSearchInit);