// seperate from cpp code.
var gdAudioLinks = { first: null, current: null };

function gdMakeArticleActive(newId) {
    var gdCurrentArticle=$_$(".gdactivearticle").attr("id");
    if (gdCurrentArticle !== 'gdfrom-' + newId) {
        $_$(".gdactivearticle").removeClass("gdactivearticle");
        var newFormId='gdfrom-' + newId;
        $_$("#"+newFormId).addClass("gdactivearticle");
        gdCurrentArticle = 'gdfrom-' + newId;
        gdAudioLinks.current = newId;
        articleview.onJsActiveArticleChanged(gdCurrentArticle);
    }
}
var overIframeId = null;

function gdSelectArticle(id) {
    var selection = window.getSelection();
    var range = document.createRange();
    range.selectNodeContents(document.getElementById('gdfrom-' + id));
    selection.removeAllRanges();
    selection.addRange(range);
}

function processIframeMouseOut() {
    overIframeId = null;
    top.focus();
}

function processIframeMouseOver(newId) { overIframeId = newId; }

function processIframeClick() {
    if (overIframeId != null) {
        overIframeId = overIframeId.replace('gdexpandframe-', '');
        gdMakeArticleActive(overIframeId)
    }
}

function init() { window.addEventListener('blur', processIframeClick, false); }
window.addEventListener('load', init, false);

function gdExpandOptPart(expanderId, optionalId) {
    var d1 = document.getElementById(expanderId);
    var i = 0;
    if (d1.alt == '[+]') {
        d1.alt = '[-]';
        d1.src = 'qrcx://localhost/icons/collapse_opt.png';
        for (i = 0; i < 1000; i++) {
            var d2 = document.getElementById(optionalId + i);
            if (!d2) break;
            d2.style.display = 'inline';
        }
    } else {
        d1.alt = '[+]';
        d1.src = 'qrcx://localhost/icons/expand_opt.png';
        for (i = 0; i < 1000; i++) {
            var d2 = document.getElementById(optionalId + i);
            if (!d2) break;
            d2.style.display = 'none';
        }
    }
};

function gdExpandArticle(id) {
    elem = document.getElementById('gdarticlefrom-' + id);
    ico = document.getElementById('expandicon-' + id);
    art = document.getElementById('gdfrom-' + id);
    ev = window.event;
    t = null;
    if (ev) t = ev.target || ev.srcElement;
    if (elem.style.display == 'inline' && t == ico) {
        elem.style.display = 'none';
        ico.className = 'gdexpandicon';
        art.className = art.className + ' gdcollapsedarticle';
        nm = document.getElementById('gddictname-' + id);
        nm.style.cursor = 'pointer';
        if (ev) ev.stopPropagation();
        ico.title = tr("Expand article");
        nm.title = '';
    } else if (elem.style.display == 'none') {
        elem.style.display = 'inline';
        ico.className = 'gdcollapseicon';
        art.className = art.className.replace(' gdcollapsedarticle', '');
        nm = document.getElementById('gddictname-' + id);
        nm.style.cursor = 'default';
        nm.title = '';
        ico.title = tr("Collapse article");
    }
}

function gdCheckArticlesNumber() {
    elems = document.getElementsByClassName('gddictname');
    if (elems.length == 1) {
        el = elems.item(0);
        s = el.id.replace('gddictname-', '');
        el = document.getElementById('gdfrom-' + s);
        if (el && el.className.search('gdcollapsedarticle') > 0) gdExpandArticle(s);
    }
}