/*
     FILE ARCHIVED ON 0:09:13 Dec 9, 2010 AND RETRIEVED FROM THE
     AN OPENWAYBACK INSTANCE ON 22:43:07 Jul 16, 2024.
     JAVASCRIPT APPENDED BY OPENWAYBACK, COPYRIGHT INTERNET ARCHIVE.

     ALL OTHER CONTENT MAY ALSO BE PROTECTED BY COPYRIGHT (17 U.S.C.
     SECTION 108(a)(3)).
*/
dojo.require("dojo.string");
function TypeAhead(opts)
{
    var defaultOpts = {
        searchBox: '',
        resultsDiv: document.getElementById('typeahead'),
        dbObject: 'ta_data',
        dbUrl: '',
        resultsPerCategory: 5,
        minChars: 2,
        lagTime: 50,
        debug: false
    };

    var templates = {
        resultsStart: "<div class='tab'></div>",
        resultsEnd: "<div style='clear:both'></div>",
        categoryStart: "<div class='category ${category}'><h4>${header}</h4><ul>",
        categoryEnd: "</ul></div>",
        entry: {
            video: "<li><a href=\"javascript:MM_openBrWindow('${entry.link}', 'hdtv', 'width=1100,height=675')\" ${entry.trackClick} class='video'>${entry.view}</a></li>",
            Default: "<li><a href='${entry.link}' ${entry.trackClick}>${entry.view}</a></li>"
        },
        highlight: "${match}"
    };

    var buildUrl = {
        categories : function(e) {
            var seo = (e.A+"-"+e.T).replace(/[ >]+/g,'-').replace(/^-+/,'');
            return "https://webarchive.library.unt.edu/web/20101209000913/http://www.homedepot.com/"+seo+"/h_d1/N-5yc1vZ1xg1Z"+e.N+"/h_d2/Navigation?langId=-1&storeId=10051&catalogId=10053";
        },
        brands : function(e) {
            return "https://webarchive.library.unt.edu/web/20101209000913/http://www.homedepot.com/"+e.T.replace(/[ ]+/g,'-')+"/h_d1/N-5yc1vZ1xg1Z"+e.N+"/h_d2/Navigation?langId=-1&storeId=10051&catalogId=10053";
        },
        Default: function(e){
            return e.L;
        }
    };

    var buildLog = {
        categories : function(e) {
            return (e.A+" > "+e.T).replace(/^[ >]+/,'');
        },
        Default: function(e) {
            return e.T;
        }
    };
    
    var buildView = {
        Default: function(e) {
            return e.T;
        }
    };

    var headers = {
        categories: 'Shop by Category',
        brands:     'Shop by Brand',
        projects:   'How to: Project Guides',
        buying:     'How to: Buying Guides',
        Community:  'Community',
        InstallationServices: 'Installation Services'
    };



    var searchTimer = null;
    var debug;

    if(opts.debug !== true || !window.console)
    {
        var firebugFunctions = ["log", "debug", "info", "warn", "error", "assert", "dir", "dirxml",
        "group", "groupEnd", "time", "timeEnd", "count", "trace", "profile", "profileEnd"];
        function noop(){}
        debug = {};
        for (var i = 0; i < firebugFunctions.length; ++i)
            debug[firebugFunctions[i]] = noop;
    }
    else
    {
        debug = console;
    }

    function init()
    {
        debug.group("Initializing TypeAhead Widget");
        opts = dojo.mixin(defaultOpts,opts);
        debug.log(opts);
        prepDom();
        getDbObject();
        debug.groupEnd();
    }

    function prepDom()
    {
        debug.log("Preparing Dom");
        if('string' == typeof(opts.resultsDiv))
            opts.resultsDiv = dojo.query(opts.resultsDiv);
        dojo.style(opts.resultsDiv,'display','none');
        if('string' == typeof(opts.searchBox))
            opts.searchBox = dojo.query(opts.searchBox);
        dojo.connect(opts.searchBox,'onkeyup',TypeAhead,scheduleSearch);
        dojo.connect(opts.searchBox,'onblur',TypeAhead,scheduleClearSearchResults);
        dojo.attr(opts.searchBox,'autocomplete','off');
    }

    function getDbObject()
    {
        if('string' == typeof(opts.dbObject))
        {
            if( '' != opts.dbUrl)
                downloadDbObject();
            checkForDbObject();
        }
        else
        {
            prepDbObject();
        }
    }

    function downloadDbObject()
    {
        debug.log("Downloading json database from url: "+opts.dbUrl);
        loadFile(opts.dbUrl);
    }

    function loadFile(url)
    {
        var script=document.createElement('script');
        script.setAttribute("type","text/javascript");
        script.setAttribute("src", url);
        document.getElementsByTagName("head")[0].appendChild(script);
    }

    function checkForDbObject()
    {
        debug.log('Checking for Db Object');
        if('object' != typeof(window[opts.dbObject]))
        {
            debug.log('dbObject not yet available');
            setTimeout(dojo.hitch(TypeAhead,checkForDbObject),200);
        }
        else
        {
            opts.dbObject = window[opts.dbObject];
            prepDbObject();
        }
    }

    function prepDbObject()
    {
        debug.group("Preparing Search Object");
        debug.log("Registered Db object: ",opts.dbObject);
        debug.time("Search Object Preparation Time");
        for(category in opts.dbObject)
        {
            if( ! opts.dbObject.hasOwnProperty(category)) continue;
            for(entry in opts.dbObject[category])
            {
                if( ! opts.dbObject[category].hasOwnProperty(entry)) continue;
                for(property in opts.dbObject[category][entry])
                {
                    if( ! opts.dbObject[category][entry].hasOwnProperty(property)) continue;
                    if(property.indexOf('lower') == -1)
                        opts.dbObject[category][entry][property+"lower"] = opts.dbObject[category][entry][property].toLowerCase();
                }
            }
        }
        mergeVideosAndProjects();
        debug.timeEnd("Search Object Preparation Time");
        debug.groupEnd();
        debug.log(opts.dbObject);
    }

    function mergeVideosAndProjects()
    {
        for(entry in opts.dbObject.video){
            if( ! opts.dbObject.video.hasOwnProperty(entry) ) continue;
            opts.dbObject.video[entry].V = true;
            opts.dbObject.video[entry].category = 'video';
        }
        for(entry in opts.dbObject.projects){
            if( ! opts.dbObject.projects.hasOwnProperty(entry) ) continue;
            opts.dbObject.projects[entry].V = false;
        }
        opts.dbObject.projects = opts.dbObject.projects.concat(opts.dbObject.video);
        delete(opts.dbObject.video);
    }

    function scheduleSearch(e)
    {
        clearTimeout(searchTimer);
        if(((e.keyCode > 64 && e.keyCode < 91) || dojo.keys.BACKSPACE ))
            searchTimer = setTimeout(performSearch,opts.lagTime);
    }

    function performSearch()
    {
        var term = opts.searchBox.value.toLowerCase();
        if(term.length >= opts.minChars)
        {
            debug.group("Performing Search on Term: "+term);
            debug.time("Search Time");
            var matches = {};
            var total = 0;
            for( var category in opts.dbObject)
            {
                if( ! opts.dbObject.hasOwnProperty(category) ) continue;
                matches[category] = [];
                var entries = opts.dbObject[category];
                var cnt = 0;
                for(entry in entries)
                {
                    if( ! entries.hasOwnProperty(entry) ) continue;
                    if(cnt == opts.resultsPerCategory) break;
                    entry = entries[entry];
                    if(entry['Tlower'].indexOf(term) > -1)
                    {
                        cnt++;
                        total++;
                        if('undefined'==typeof(entry.category))
                        {
                            entry.category = category;
                        }
                        matches[category].push(prepareEntry(entry,term));
                    }
                }
            }
            debug.timeEnd("Search Time");
            debug.log("Matches: ",matches);
            debug.groupEnd();

            updateSearchResults(matches,total);
        }
        else
        {
            clearSearchResults();
        }
    }

    function updateSearchResults(matches,numResults)
    {
        debug.log("Updating Search Results");
        var output = "";
        var col = [ "", "", "" ];
        if(numResults > 0)
        {
            output += dojo.string.substitute(templates.resultsStart,{
                count:numResults
            });
            var i = 0;
            for(category in matches)
            {
                if( ! matches.hasOwnProperty(category) ) continue;
                if(matches[category].length > 0)
                {
                    col[i%3] += addSearchResultsCategory(category,matches[category]);
                    i++;
                }
            }
            output += "<div class='column'>"+col[0]+"</div><div class='column'>"+col[1]+"</div><div class='column'>"+col[2]+"</div>";
            output += dojo.string.substitute(templates.resultsEnd,{
                count:numResults
            });
            opts.resultsDiv.innerHTML = output;
            showSearchResults();
        }
        else
        {
            clearSearchResults();
        }
    }

    function addSearchResultsCategory(category, matches)
    {
        var output = "";
        output += dojo.string.substitute(templates.categoryStart,{
            category:category,
            header:headers[category],
            count:matches.length
            });
        for(entry in matches)
        {
            if( ! matches.hasOwnProperty(entry) ) continue;
            entry = matches[entry];
            if('undefined' != typeof(templates.entry[entry.category]) )
            {
                output += dojo.string.substitute(templates.entry[entry.category],{
                    entry:entry
                });
            }
            else
            {
                output += dojo.string.substitute(templates.entry.Default,{
                    entry:entry
                });
            }
        }
        output += dojo.string.substitute(templates.categoryEnd,{
            category:category,
            header:headers[category],
            count:matches.length
            });
        return output;
    }

    function clearSearchResults()
    {
        opts.resultsDiv.innerHTML = "";
        dojo.style(opts.resultsDiv,'display','none');
        var colS2 = document.getElementsByTagName("SELECT");
        if (colS2!=null){
            for (i=0; i<colS2.length; i++)
            {
                colS2[i].style.visibility="hidden";
            }
        }
    }

    function scheduleClearSearchResults(time)
    {
        if('number'!=typeof(time)) time = 200;
        setTimeout(clearSearchResults,time);
    }

    function showSearchResults()
    {
        dojo.style(opts.resultsDiv,'display','block');z
        var colS2 = document.getElementsByTagName("SELECT");
        if (colS2!=null){
            for (i=0; i<colS2.length; i++)
            {
                colS2[i].style.visibility="hidden";
            }
        }
    }

    function prepareEntry(entry,term)
    {
        if('undefined' != typeof(buildUrl[entry.category]))
        {
            entry.link = buildUrl[entry.category](entry);
        }
        else
        {
            entry.link = buildUrl.Default(entry);
        }

        var regex = new RegExp("("+term+")","gi");
        var view;
            if('undefined' != typeof(buildView[entry.category]))
                view = buildView[entry.category](entry);
            else
                view = buildView.Default(entry);
            entry.view = view.replace(regex, dojo.string.substitute(templates.highlight,{
                match:'$1'
            }));
        var log;
            if('undefined' != typeof(buildLog[entry.category]))
                log = buildLog[entry.category](entry);
            else
                log = buildLog.Default(entry);

        entry.trackClick = " onclick='TALogMetrics("+((entry.category=='video')?"true":"this")+",\""+log+"\")' ";
        return entry;
    }

    init();
}
function TALogMetrics(lnk,text)
{
    try{
        var s=s_gi(s_account);
        s.linkTrackVars='eVar11,events';
        s.linkTrackEvents='event21';
        s.eVar11=text;
        s.events='event21'
        s.tl(lnk,'o','TypeAhead Search');
    } catch(e){
        debug.error('Omniture call failed');
    }
}