/* Merged Plone Javascript file
 * This file is dynamically assembled from separate parts.
 * Some of these parts have 3rd party licenses or copyright information attached
 * Such information is valid for that section,
 * not for the entire composite file
 * originating files are separated by ----- filename.js -----
 */

/* ----- highlightsearchterms.js ----- */
function highlightTermInNode(node, word) {
    var contents = node.nodeValue;
    var index = contents.toLowerCase().indexOf(word.toLowerCase());
    if (index < 0){return false};

    var parent = node.parentNode;
    if (parent.className != "highlightedSearchTerm") {
        // make 3 shiny new nodes
        var hiword = document.createElement("span");
        hiword.className = "highlightedSearchTerm";
        hiword.appendChild(document.createTextNode(contents.substr(index, word.length)));
        parent.insertBefore(document.createTextNode(contents.substr(0, index)), node);
        parent.insertBefore(hiword, node);
        parent.insertBefore(document.createTextNode(contents.substr(index+word.length)), node);
        parent.removeChild(node);
    }
}

function highlightSearchTerms(terms, startnode) {
    // terminate if we hit a non-compliant DOM implementation
    if (!W3CDOM){return false};
    if (!terms){return false};
    if (!startnode){return false};

    for (var term_index=0; term_index < terms.length; term_index++) {
        // don't highlight reserved catalog search terms
        var term = terms[term_index];
        var term_lower = term.toLowerCase();
        if (term_lower != 'not'
            && term_lower != 'and'
            && term_lower != 'or') {
            walkTextNodes(startnode, highlightTermInNode, term);
        }
    }
}

function getSearchTermsFromURI(uri) {
    var query;
    if (typeof decodeURI != 'undefined') {
        query = decodeURI(uri);
    } else if (typeof unescape != 'undefined') {
        // _robert_ ie 5 does not have decodeURI 
        query = unescape(uri);
    } else {
        // we just try to be lucky, for single words this will still work
    }
    var result = new Array();
    if (window.decodeReferrer) {
        var referrerSearch = decodeReferrer();
        if (null != referrerSearch && referrerSearch.length > 0) {
            result = referrerSearch;
        }
    }
    var qfinder = new RegExp("searchterm=([^&]*)", "gi");
    var qq = qfinder.exec(query);
    if (qq && qq[1]) {
        var terms = qq[1].replace(/\+/g,' ').split(/\s+/);
        for (var i=0; i < terms.length; i++) {
            if (terms[i] != '') {
                result.push(terms[i]);
            }
        }
        return result;
    }
    return result.length == 0 ? false : result;
}

function highlightSearchTermsFromURI() {
    // terminate if we hit a non-compliant DOM implementation
    if (!W3CDOM){return false};

    // search-term-highlighter function --  Geir Bækholt
    var terms = getSearchTermsFromURI(window.location.search);
    // make sure we start the right place so we don't higlight menuitems or breadcrumb
    var contentarea = getContentArea();
    highlightSearchTerms(terms, contentarea);
}

registerPloneFunction(highlightSearchTermsFromURI);


/* ----- se-highlight.js ----- */
/* List of search engine matchers and the referrer search
 * code where carefully borrowed from the
 * "Search Engine Keyword Highlight" by Scott Yang,
 * see http://fucoder.com/code/se-hilite/ for further
 * details.
 */
var searchEngines = [
    ['^http://(www)?\\.?google.*', 'q='],              // Google
    ['^http://search\\.yahoo.*', 'p='],                // Yahoo
    ['^http://search\\.msn.*', 'q='],                  // MSN
    ['^http://search\\.aol.*', 'userQuery='],          // AOL
    ['^http://(www\\.)?altavista.*', 'q='],            // AltaVista
    ['^http://(www\\.)?feedster.*', 'q='],             // Feedster
    ['^http://search\\.lycos.*', 'query='],            // Lycos
    ['^http://(www\\.)?alltheweb.*', 'q=']             // AllTheWeb
]

function decodeReferrer(ref) {
    // checks if we are beeing searched by a search engine
    if (null == ref && document.referrer) {
        ref = document.referrer;
    }
    if (!ref) return null;

    var match = new RegExp('');
    var seQuery = '';
    for (var i = 0; i < searchEngines.length; i ++) {
        match.compile(searchEngines[i][0], 'i');
        if (ref.match(match)) {
            match.compile('^.*'+searchEngines[i][1]+'([^&]+)&?.*$');
            seQuery = ref.replace(match, '$1');
            if (seQuery) {
                seQuery = decodeURIComponent(seQuery);
                seQuery = seQuery.replace(/\'|"/, '');
                return seQuery.split(/[\s,\+\.]+/);
            }

        }
    }
    return null;
}


/* ----- first_input_focus.js ----- */
// Focus on error 
function setFocus(){
    // terminate if we hit a non-compliant DOM implementation
    if (!W3CDOM){return false};

    var xre = new RegExp(/\berror\b/);
    // Search only forms to avoid spending time on regular text
    for (var f = 0; (formnode = document.getElementsByTagName('form').item(f)); f++){
        // Search for errors first, focus on first error if found
        for (var i = 0; (node = formnode.getElementsByTagName('div').item(i)); i++) {
            if (xre.exec(node.className)){
                for (var j = 0; (inputnode = node.getElementsByTagName('input').item(j)); j++) {
                    try {
                        if (inputnode.focus) { // check availability first
                            inputnode.focus();
                            return;
                        }
                    } catch(e) {
                        // try next one, this can happen with a hidden or
                        // invisible input field
                    }
                }
            }
        }
    }
}
registerPloneFunction(setFocus)