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

function gdMakeArticleActive(newId,noEvent) {
    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
        if(!noEvent)
            articleview.onJsActiveArticleChanged('gdfrom-' + newId);
    }
}

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 = 'qrc:///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 = 'qrc:///icons/expand_opt.png'
        for (i = 0; i < 1000; i++) {
            var d2 = document.getElementById(optionalId + i)
            if (!d2)
                break
            d2.style.display = 'none'
        }
    }
}

function emitClickedEvent(link) {
    try {
        if ('string' != typeof(link)) {
            return;
        }
        articleview.linkClickedInHtml(link)
    } catch (error) {
        console.error(error)
    }
}

function gdExpandArticle(id) {
    emitClickedEvent()
    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') {
        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)
    }
}