var smf_topic, smf_start, smf_show_modify, quickReplyCollapsed, buff_message;
var cur_msg_id, cur_msg_div, buff_subject, cur_subject_div, in_edit_mode = 0;

function doQuote(messageid, cur_session_id)
{
    if (quickReplyCollapsed)
        window.location.href = smf_scripturl + "?action=post;quote=" + messageid + ";topic=" + smf_topic + "." + smf_start + ";sesc=" + cur_session_id;
    else
    {
        if (window.XMLHttpRequest)
        {
            if (typeof window.ajax_indicator == "function")
                ajax_indicator(true);
            getXMLDocument(smf_scripturl + "?action=quotefast;quote=" + messageid + ";sesc=" + cur_session_id + ";xml", onDocReceived);
        }
        else
            reqWin(smf_scripturl + "?action=quotefast;quote=" + messageid + ";sesc=" + cur_session_id, 240, 90);

        if (navigator.appName == "Microsoft Internet Explorer")
            window.location.hash = "quickreply";
        else
            window.location.hash = "#quickreply";
    }
}

function onDocReceived(XMLDoc)
{
    var text = "";
    for (var i = 0; i < XMLDoc.getElementsByTagName("quote")[0].childNodes.length; i++)
        text += XMLDoc.getElementsByTagName("quote")[0].childNodes[i].nodeValue;

    replaceText(text, document.forms.postmodify.message);
    if (typeof window.ajax_indicator == "function")
        ajax_indicator(false);
}


function modify_msg(msg_id, cur_session_id)
{
    if (!window.XMLHttpRequest)
        return;
    if (typeof(window.opera) != "undefined")
    {
        var test = new XMLHttpRequest();
        if (typeof(test.setRequestHeader) != "function")
            return;
    }
    if (in_edit_mode == 1)
        modify_cancel();
    in_edit_mode = 1;
    if (typeof window.ajax_indicator == "function")
        ajax_indicator(true);
    getXMLDocument(smf_scripturl + '?action=quotefast;quote=' + msg_id + ';sesc=' + cur_session_id + ';modify;xml', onDocReceived_modify);
}

function onDocReceived_modify(XMLDoc)
{
    var text = "";
    var subject = "";

    // Grab the message ID.
    cur_msg_id = XMLDoc.getElementsByTagName("message")[0].getAttribute("id");

    // Replace the body part.
    for (var i = 0; i < XMLDoc.getElementsByTagName("message")[0].childNodes.length; i++)
        text += XMLDoc.getElementsByTagName("message")[0].childNodes[i].nodeValue;
    cur_msg_div = document.getElementById(cur_msg_id);
    buff_message = getInnerHTML(cur_msg_div);

    // Actually create the content, with a bodge for dissapearing dollar signs.
    text = text.replace(/\$/g,"{&dollarfix;$}");
    text = smf_template_body_edit.replace(/%body%/, text).replace(/%msg_id%/g, cur_msg_id.substr(4));
    text = text.replace(/\{&dollarfix;\$\}/g,"$");
    //alert(text);
    setInnerHTML(cur_msg_div, text);

    // Replace the subject part.
    cur_subject_div = document.getElementById('subject_' + cur_msg_id.substr(4));
    buff_subject = getInnerHTML(cur_subject_div);

    subject = XMLDoc.getElementsByTagName("subject")[0].childNodes[0].nodeValue;
    subject = subject.replace(/\$/g,"{&dollarfix;$}");
    subject = smf_template_subject_edit.replace(/%subject%/, subject);
    subject = subject.replace(/\{&dollarfix;\$\}/g,"$");
    setInnerHTML(cur_subject_div, subject);
    if (typeof window.ajax_indicator == "function")
        ajax_indicator(false);
}

function modify_cancel()
{
    // Roll back the HTML to its original state.
    setInnerHTML(cur_msg_div, buff_message);
    setInnerHTML(cur_subject_div, buff_subject);

    // No longer in edit mode, that's right.
    in_edit_mode = 0;

    return false;
}

function modify_save(cur_session_id)
{
    if (!in_edit_mode)
        return true;

    var i, x = new Array();
    x[x.length] = 'subject=' + escape(textToEntities(document.forms.quickModForm['subject'].value.replace(/&#/g, "&#38;#"))).replace(/\+/g, "%2B");
    x[x.length] = 'message=' + escape(textToEntities(document.forms.quickModForm['message'].value.replace(/&#/g, "&#38;#"))).replace(/\+/g, "%2B");
    x[x.length] = 'topic=' + parseInt(document.forms.quickModForm.elements['topic'].value);
    x[x.length] = 'msg=' + parseInt(document.forms.quickModForm.elements['msg'].value);

    if (typeof window.ajax_indicator == "function")
        ajax_indicator(true);

    sendXMLDocument(smf_scripturl + "?action=jsmodify;topic=" + smf_topic + ";sesc=" + cur_session_id + ";xml", x.join("&"), modify_done);

    return false;
}

function modify_done(XMLDoc)
{
    if (!XMLDoc)
    {
        modify_cancel();
        return;
    }

    var message = XMLDoc.getElementsByTagName("smf")[0].getElementsByTagName("message")[0];
    var body = message.getElementsByTagName("body")[0];
    var error = message.getElementsByTagName("error")[0];

    if (body)
    {
        // Show new body.
        var bodyText = "";
        for (i = 0; i < body.childNodes.length; i++)
            bodyText += body.childNodes[i].nodeValue;

        bodyText = bodyText.replace(/\$/g,"{&dollarfix;$}");
        bodyText = smf_template_body_normal.replace(/%body%/, bodyText);
        bodyText = bodyText.replace(/\{&dollarfix;\$\}/g,"$");
        setInnerHTML(cur_msg_div, bodyText);
        buff_message = bodyText;

        // Show new subject.
        var subject = message.getElementsByTagName("subject")[0];
        var subject_text = subject.childNodes[0].nodeValue;
        subject_text = subject_text.replace(/\$/g,"{&dollarfix;$}");
        var subject_html = smf_template_subject_normal.replace(/%msg_id%/g, cur_msg_id.substr(4)).replace(/%subject%/, subject_text);
        subject_html = subject_html.replace(/\{&dollarfix;\$\}/g,"$");
        setInnerHTML(cur_subject_div, subject_html);
        buff_subject = subject_html;

        // If this is the first message, also update the topic subject.
        if (subject.getAttribute("is_first") == 1)
        {
            var subject_top = smf_template_top_subject.replace(/%subject%/, subject_text);
            subject_top = subject_top.replace(/\{&dollarfix;\$\}/g,"$");
            setInnerHTML(document.getElementById("top_subject"), subject_top);
        }

        // Show this message as "modified on x by y".
        if (smf_show_modify)
        {
            var cur_modify_div = document.getElementById('modified_' + cur_msg_id.substr(4));
            setInnerHTML(cur_modify_div, message.getElementsByTagName("modified")[0].childNodes[0].nodeValue);
        }
    }
    else if (error)
    {
        setInnerHTML(document.getElementById("error_box"), error.childNodes[0].nodeValue);
        document.forms.quickModForm.message.style.border = error.getAttribute("in_body") == "1" ? "1px solid red" : "";
        document.forms.quickModForm.subject.style.border = error.getAttribute("in_subject") == "1" ? "1px solid red" : "";
    }

    if (typeof window.ajax_indicator == "function")
        ajax_indicator(false);
}

function showModifyButtons()
{
    var numImages = document.images.length;
    for (var i = 0; i < numImages; i++)
        if (document.images[i].id.substr(0, 14) == 'modify_button_')
            document.images[i].style.display = '';
}

function expandThumb(thumbID)
{
    var img = document.getElementById('thumb_' + thumbID);
    var link = document.getElementById('link_' + thumbID);
    var tmp = img.src;
    img.src = link.href;
    link.href = tmp;
    img.style.width = '';
    img.style.height = '';
    return false;
}

function swapQuickReply()
{
    document.getElementById("quickReplyExpand").src = smf_images_url + "/" + (quickReplyCollapsed ? "collapse.gif" : "expand.gif");
    document.getElementById("quickReplyOptions").style.display = quickReplyCollapsed ? "" : "none";

    quickReplyCollapsed = !quickReplyCollapsed;
}