/* - mark_special_links.js - */
/* Scan all links in the document and set classes on them if
 * they point outside the site, or are special protocols
 * To disable this effect for links on a one-by-one-basis,
 * give them a class of 'link-plain'
 */

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

    // first make external links open in a new window, afterwards do the
    // normal plone link wrapping in only the content area

    if ((typeof external_links_in_content_only != 'undefined') &&
        (external_links_in_content_only == false)) {
        links = document.getElementsByTagName('a');
        for (i=0; i < links.length; i++) {
            if ( (links[i].getAttribute('href'))
                 && (links[i].className.indexOf('link-plain')==-1) ) {
                var linkval = links[i].getAttribute('href');

                // check if the link href is a relative link, or an absolute link to
                // the current host.
                if (linkval.toLowerCase().indexOf(window.location.protocol
                                                  + '//'
                                                  + window.location.host)==0) {
                    // absolute link internal to our host - do nothing
                } else if (linkval.indexOf('http:') != 0) {
                    // not a http-link. Possibly an internal relative link, but also
                    // possibly a mailto or other protocol add tests for relevant
                    // protocols as you like.
                    // do nothing
                } else {
                    // we are in here if the link points to somewhere else than our
                    // site.
                    links[i].setAttribute('target', '_blank');
                }
            }
        }
    }

    contentarea = getContentArea();
    if (!contentarea) {
        return false;
    }

    links = contentarea.getElementsByTagName('a');

    for (i=0; i < links.length; i++) {
        var states = new Array('Alabama', 'Arkansas', 'Connecticut', 'Delaware', 'Florida', 'Georgia', 'Illinois', 'Indiana', 'Iowa','Kentucky', 'Louisiana', 'Maine', 'Maryland','Massachusetts', 'Michigan', 'Minnesota', 'Missouri','Mississippi', 'NewHampshire', 'NewJersey', 'NewYork','NorthCarolina', 'Ohio', 'Oklahoma', 'Pennsylvania','RhodeIsland', 'SouthCarolina', 'Tennessee', 'Texas','Vermont', 'Virginia', 'WashingtonDC', 'WestVirginia','Wisconsin');
        var calls = new Array('Alabama', 'Arkansas', 'Connecticut', 'Delaware', 'Florida', 'Georgia', 'Illinois', 'Indiana', 'Iowa','Kentucky', 'Louisiana', 'Maine', 'Maryland','Massachusetts', 'Michigan', 'Minnesota', 'Missouri','Mississippi', 'New Hampshire', 'New Jersey', 'New York','North Carolina', 'Ohio', 'Oklahoma', 'Pennsylvania','Rhode Island', 'South Carolina', 'Tennessee', 'Texas','Vermont', 'Virginia', 'Washington DC', 'West Virginia','Wisconsin');
            for(j=0; j < 34; j++) {
                if(links[i].className.indexOf(states[j]) != -1) {
                    links[i].setAttribute('href', 'javascript:ReplaceContent(\'' + calls[j] + '\')');
                    links[i].onClick = function() {
                        ReplaceContent(calls[j]);
                    }
                    break;
                }
            }

        if ( (links[i].getAttribute('href'))
             && (links[i].className.indexOf('link-plain')==-1) ) {
            var linkval = links[i].getAttribute('href');
            
            // check if the link href is a relative link, or an absolute link to
            // the current host.
            if (linkval.toLowerCase().indexOf(window.location.protocol
                                              + '//'
                                              + window.location.host)==0) {
                // absolute link internal to our host - do nothing
            } else if (linkval.indexOf('http:') != 0) {
                // not a http-link. Possibly an internal relative link, but also
                // possibly a mailto or other protocol add tests for relevant
                // protocols as you like.
                protocols = ['mailto', 'ftp', 'news', 'irc', 'h323', 'sip',
                             'callto', 'https', 'feed', 'webcal'];
                // h323, sip and callto are internet telephony VoIP protocols
                for (p=0; p < protocols.length; p++) {
                    if (linkval.indexOf(protocols[p]+':') == 0) {
                        // if the link matches one of the listed protocols, add
                        // className = link-protocol
                        wrapNode(links[i], 'span', 'link-'+protocols[p]);
                        break;
                    }
                }
            } else {
                // we are in here if the link points to somewhere else than our
                // site.
                if ( links[i].getElementsByTagName('img').length == 0 ) {
                    // we do not want to mess with those links that already have
                    // images in them
                    //wrapNode(links[i], 'span', 'link-external');
       doNothing = 1;
                }
                // set open_links_in_external_window in plone_javascript_variables.js.pt
                // to true if you want external links to be opened in a new
                // window.
                if ((typeof external_links_open_new_window != 'undefined') &&
                    (external_links_open_new_window == true)) {
                    links[i].setAttribute('target', '_blank');
                }
            }
        }
    }
};

registerPloneFunction(scanforlinks);