// interface_common.js
// 2013 Lucas Leal, Miguel Freitas
//
// Common interface functions to all pages, modal manipulation, button manipulation etc
// Profile, mentions and hashtag modal
// Post actions: submit, count characters

//dispara o modal genérico
//o modalClass me permite fazer tratamentos específicos de CSS para cada modal
function openModal( modalClass )
{
    var $oldModal = $("body").children(".modal-blackout");
    var $template = $( "#templates" );
    var $templateModal = $template.find( ".modal-blackout" ).clone(true);

    $templateModal.addClass( modalClass );
    if( $oldModal.length ) {
        $templateModal.show();
        $oldModal.replaceWith($templateModal);
    } else {
        $templateModal.prependTo( "body" ).fadeIn( "fast" );
    }

    //escondo o overflow da tela
    var $body = $( "body" );
    $body.css({
        "overflow": "hidden",
    })
}

//fecha o modal removendo o conteúdo por detach
function closeModal($this)
{   
    var $body = $( "body" );
    var $modalWindows = $( "body" ).children( ".modal-blackout" );

    $modalWindows.fadeOut( "fast", function()
    {
        $modalWindows.detach();
    });
    $body.css({
        "overflow": "auto",
        "margin-right": "0"
    });
}

function checkNetworkStatusAndAskRedirect(cbFunc, cbArg) {
    networkUpdate(function(args) {
                      if( !twisterdConnectedAndUptodate ) {
                          var redirect =
                              window.confirm(polyglot.t("switch_to_network"));
                          if( redirect )
                              $.MAL.goNetwork();
                      } else {
                        if( args.cbFunc )
                            args.cbFunc(args.cbArg);
                      }
                  }, {cbFunc:cbFunc,cbArg:cbArg});
}

function timeGmtToText(t) {
    var d = new Date(0);
    d.setUTCSeconds(t);
    return d.toString().replace(/GMT.*/g,"");
}

function timeSincePost(t) {
    var d = new Date(0);
    d.setUTCSeconds(t);
    var now = new Date();
    var t_delta = Math.ceil((now - d) / 1000);
    var expression = "";
    if(t_delta < 60) {
        expression = polyglot.t("seconds", t_delta);
    }
    else if(t_delta < 60 * 60) {
        expression = polyglot.t("minutes", Math.floor(t_delta/60));
    }
    else if(t_delta < 24 * 60 * 60) {
        expression = polyglot.t("hours", Math.floor(t_delta/60/60));
    }
    else {
        expression = polyglot.t("days", Math.floor(t_delta/24/60/60));
    }
    return polyglot.t("time_ago", { time: expression });
}

//
// Profile, mentions, hashtag, and following modal
// -----------------------------------

function newProfileModal(username) {
    var profileModalContent = $( "#profile-modal-template" ).children().clone(true);

    updateProfileData(profileModalContent, username);
    return profileModalContent;
}

function openProfileModal(e)
{
    e.stopPropagation();
    e.preventDefault();

    var $this = $( this );
    var username = $.MAL.urlToUser( $this.attr("href") );
    
    if(!username)
    {
	alert(polyglot.t("You don't have any profile because you are not logged in."));
	return;
    }

    var profileModalClass = "profile-modal";
    openModal( profileModalClass );

    var profileModalContent = newProfileModal( username );
    profileModalContent.appendTo("." +profileModalClass + " .modal-content");

    //título do modal
    $( "."+profileModalClass + " h3" ).text( polyglot.t("users_profile", { username: username }) );
    
    //hed//add dinamic follow button in profile modal window
    if(followingUsers.indexOf(username) != -1){
        $('.profile-card button.followButton').first().removeClass('follow').addClass('profileUnfollow').text(polyglot.t('Unfollow')).on('click', function(){
            unfollow(username);
        });
    };
}

function newHashtagModal(hashtag) {
    var hashtagModalContent = $( "#hashtag-modal-template" ).children().clone(true);
    hashtagModalContent.find( ".postboard-news").click(function (){
        $(this).hide();
        displayHashtagPending($(".hashtag-modal .postboard-posts"));
    });

    clearHashtagProcessed();
    updateHashtagModal( hashtagModalContent.find(".postboard-posts"), hashtag );

    return hashtagModalContent;
}

function openHashtagModal(e)
{
    e.stopPropagation();
    e.preventDefault();

    var $this = $( this );
    var hashtag = $this.text().substring(1).toLowerCase();

    var hashtagModalClass = "hashtag-modal";
    openModal( hashtagModalClass );
    $( "."+hashtagModalClass ).attr("data-resource","hashtag");

    var hashtagModalContent = newHashtagModal( hashtag );
    hashtagModalContent.appendTo("." +hashtagModalClass + " .modal-content");

    //título do modal
    $( "."+hashtagModalClass + " h3" ).text( "#" + hashtag );
}

function openHashtagModalFromSearch(hashtag)
{
    var hashtagModalClass = "hashtag-modal";
    openModal( hashtagModalClass );
    $( "."+hashtagModalClass ).attr("data-resource","hashtag");

    var hashtagModalContent = newHashtagModal( hashtag );
    hashtagModalContent.appendTo("." +hashtagModalClass + " .modal-content");

    //título do modal
    $( "."+hashtagModalClass + " h3" ).text( "#" + hashtag );
}

function updateHashtagModal(postboard,hashtag) {
    var $hashtagModalClass = $(".hashtag-modal");
    if( !$hashtagModalClass.length || $hashtagModalClass.css("display") == 'none' )
        return;

    var resource = $hashtagModalClass.attr("data-resource");

    requestHashtag(postboard,hashtag,resource);
    setTimeout( function() {updateHashtagModal(postboard,hashtag);}, 5000);
}

function openMentionsModal(e)
{
    e.stopPropagation();
    e.preventDefault();

    if(!defaultScreenName)
    {
	alert(polyglot.t("No one can mention you because you are not logged in."));
	return;
    }
    // reuse the same hashtag modal to show mentions
    var hashtagModalClass = "hashtag-modal";
    openModal( hashtagModalClass );
    $( "."+hashtagModalClass ).attr("data-resource","mention");

    var username;
    var $userInfo = $(this).closest("[data-screen-name]");
    if( $userInfo.length )
        username = $userInfo.attr("data-screen-name");
    else
        username = defaultScreenName;

    var hashtagModalContent = newHashtagModal( username );
    hashtagModalContent.appendTo("." +hashtagModalClass + " .modal-content");

    //título do modal
    $( "."+hashtagModalClass + " h3" ).text( polyglot.t("users_mentions", { username: username }) );

    // obtain already cached mention posts from twister_newmsgs.js
    processHashtag(hashtagModalContent.find(".postboard-posts"), defaultScreenName, getMentionsData() );
    resetMentionsCount();
}

function newFollowingModal(username) {
    var followingModalContent = $( "#following-modal-template" ).children().clone(true);

    updateFollowingData(followingModalContent, username);

    return followingModalContent;
}

function openFollowingModal(e)
{
    e.stopPropagation();
    e.preventDefault();

    var $this = $( this );
    var username = $.MAL.followingUrlToUser( $this.attr("href") );

    var followingModalClass = "following-modal";
    openModal( followingModalClass );

    var followingModalContent = newFollowingModal( username );
    followingModalContent.appendTo("." +followingModalClass + " .modal-content");

    //título do modal
    $( "."+followingModalClass + " h3" ).text( polyglot.t("followed_by", { username: username }) );
}

//
// Post actions, submit, count characters
// --------------------------------------
//dispara o modal de retweet
var reTwistPopup = function( e )
{
    if(!defaultScreenName)
    {
	e.stopPropagation();
	alert(polyglot.t("You have to log in to retransmit messages."));
	return;
    }
    
    var reTwistClass = "reTwist";
    openModal( reTwistClass );

    //título do modal
    $( ".reTwist h3" ).text( polyglot.t("retransmit_this") );

    var postdata = $(this).parents(".post-data").attr("data-userpost");
    var postElem = postToElem($.evalJSON(postdata),"");
    postElem.appendTo( ".reTwist .modal-content" );

    e.stopPropagation();
}

//Expande Área do Novo post
var replyInitPopup = function(e, post)
{
    var replyClass = "reply";
    openModal( replyClass );

    //título do modal
    var fullname = post.find(".post-info-name").text();
    $( ".reply h3" ).text( polyglot.t("reply_to", { fullname: fullname }) );

    //para poder exibir a thread selecionada...
    var replyModalContent = $(".reply .modal-content").hide();
    var retweetContent = $( "#reply-modal-template" ).children().clone(true);
    retweetContent.appendTo(replyModalContent);

    var postdata = post.find(".post-data").attr("data-userpost");
    var postElem = postToElem($.evalJSON(postdata),"");
    postElem.appendTo(replyModalContent);

    var replyArea = $(".reply .post-area .post-area-new");
    replyArea.addClass("open");
    var replyText = replyArea.find("textarea");
    var postInlineReplyText = $(".reply .post .post-area-new textarea");

    var attrToCopy = ["placeholder", "data-reply-to"];
    $.each(attrToCopy, function( i, attribute ) {
        replyText.attr( attribute, postInlineReplyText.attr(attribute) );
    });
    composeNewPost(e, replyArea);

    replyModalContent.fadeIn( "fast" );
}

//abre o menu dropdown de configurações
var dropDownMenu = function( e )
{
    var $configMenu = $( ".config-menu" );
    $configMenu.slideToggle( "fast" );
    e.stopPropagation();
}

//fecha o config menu ao clicar em qualquer lugar da tela
var closeThis = function()
{
    $( this ).slideUp( "fast" );
};

var postExpandFunction = function( e, postLi )
{
    if( !postLi.hasClass( "original" ) ) {
        return;
    }

    var originalPost = postLi.find(".post-data.original");
    var $postInteractionText = originalPost.find( ".post-expand" );
    var $postExpandedContent = originalPost.find( ".expanded-content" );
    var $postsRelated = postLi.find(".related");

    var openClass = "open";
    
    if( !postLi.hasClass( openClass ) ) {
        originalPost.detach();
        postLi.empty();
        postLi.addClass( openClass );
        $postInteractionText.text( polyglot.t("Collapse") );

        var itemOl = $("<ol/>", {class:"expanded-post"}).appendTo(postLi);
        var originalLi = $("<li/>", {class: "module post original"}).appendTo(itemOl);
        originalLi.append(originalPost);

        $postExpandedContent.slideDown( "fast" );
        
        if ($.Options.getShowPreviewOpt() == 'enable'){
            var previewContainer=$postExpandedContent.find(".preview-container")[0];
            /* was the preview added before... */
            if ($(previewContainer).children().length == 0) {
                var link = originalPost.find("a[rel='nofollow']");
                /*is there any link in the post?*/
                for (var i=0; i<link.length; i++){
                    if (/((\.jpe{0,1}g)|(\.gif)|(\.png))$/i.test(link[i].href)){
                        var url = link[i].href;
                        if ($.Options.getUseProxyOpt() !== 'disable' && $.Options.getUseProxyForImgOnlyOpt()){
                            //proxy alternatives may be added to options page...
                            if ($.Options.getUseProxyOpt() === 'ssl-proxy-my-addr') {
                                url = 'https://ssl-proxy.my-addr.org/myaddrproxy.php/' +
                                     url.substring(0, url.indexOf(':')) +
                                     url.substr(url.indexOf('/') + 1);
                            } else if ($.Options.getUseProxyOpt() ==='anonymouse') {
                                url = 'http://anonymouse.org/cgi-bin/anon-www.cgi/' + url;
                            }
                        }
                        $(previewContainer).append($("<img src='" + url + "' class='image-preview' />"));
                    }
                }
            }
        }
        // insert "reply_to" before
        requestRepliedBefore(originalLi);
        // insert replies to this post after
        requestRepliesAfter(originalLi);
        // RTs faces and counter
        requestRTs(originalLi);
    }
    else
    {
        postLi.removeClass( openClass );
        $postInteractionText.text( polyglot.t("Expand") );

        if( $postsRelated ) $postsRelated.slideUp( "fast" );
        $postExpandedContent.slideUp( "fast", function()
        {
            originalPost.detach();
            postLi.empty();
            postLi.append(originalPost);
        });
    }

    e.stopPropagation();
}

var postReplyClick = function( e )
{
    if(!defaultScreenName)
    {
	e.stopPropagation();
	alert(polyglot.t("You have to log in to post replies."));
	return;
    }
    var post = $(this).closest(".post");
    if( !post.hasClass( "original" ) ) {
        replyInitPopup(e, post);
    } else {
        var postLiOpen = post.parents(".post.open");
        if( !postLiOpen.length ) {
            postExpandFunction(e, post);
        }
        var postAreaNew = post.find(".post-area-new")
        composeNewPost(e, postAreaNew);
    }
    e.stopPropagation();
}

//Expande Área do Novo post
var composeNewPost = function( e, postAreaNew )
{
    e.stopPropagation();
    if( !postAreaNew.hasClass("open") ) {
        postAreaNew.addClass( "open" );
        //se o usuário clicar fora é pra fechar
        postAreaNew.clickoutside( unfocusThis )
    }

    var textArea = postAreaNew.find("textarea");
    textArea.focus();
    if( textArea.attr("data-reply-to") && !textArea.val().length ) {
        textArea.val(textArea.attr("data-reply-to"));
    }
}

//Reduz Área do Novo post
var unfocusThis = function()
{
    var $this = $( this );
    $this.removeClass( "open" );
}

function replyTextKeypress(e) {
    e = e || event;
    var $this = $( this );
    var tweetForm = $this.parents("form");
    if( tweetForm != undefined ) {
        if ($.Options.getUnicodeConversionOpt() !== "disable")
            $this.val(convert2Unicodes($this.val(), $this));
        var c = 140 - $this.val().length;
        var remainingCount = tweetForm.find(".post-area-remaining");
        remainingCount.text(c);
        if( c < 0 ) remainingCount.addClass("warn");
        else        remainingCount.removeClass("warn");

        var tweetAction = tweetForm.find(".post-submit");
        if( !tweetAction.length ) tweetAction = tweetForm.find(".dm-submit");
        if( c >= 0 && c < 140 &&
            $this.val() != $this.attr("data-reply-to") ) {
            $.MAL.enableButton(tweetAction);
        } else {
            $.MAL.disableButton(tweetAction);
        }

        if( $.Options.keyEnterToSend() && $('.dropdown-menu').css('display') == 'none'){
            if (e.keyCode === 13 && (!e.metaKey && !e.ctrlKey)) {
                $this.val($this.val().trim());
                if( !tweetAction.hasClass("disabled")) {
                    tweetAction.click();
                }
            }
        }else if( !$.Options.keyEnterToSend() ){
            if (e.keyCode === 13 && (e.metaKey || e.ctrlKey)) {
                
                $this.val($this.val().trim());
                if( !tweetAction.hasClass("disabled") ) {
                    tweetAction.click();
                }
            }
        }
    }
}

/*
 *  unicode convertion list
 *  k: original string to be replaced
 *  u: unicode
 *  n: index of char to be stored and appended to result
 */
var unicodeConversionList = {
    "ponctuations": [
        {
            "k": /\.\.\./,
            "u": "\u2026",
            "n": -1
        },
        {
            "k": /\.\../,
            "u": "\u2025",
            "n": 2
        },
        {
            "k": /\?\?/,
            "u": "\u2047",
            "n": -1
        },
        {
            "k": /\?!/,
            "u": "\u2048",
            "n": -1
        },
        {
            "k": /!\?/,
            "u": "\u2049",
            "n": -1
        },
        {
            "k": /!!/,
            "u": "\u203C",
            "n": -1
        },
        {
            "k": /--/,
            "u": "\u2014",
            "n": -1
        },
        {
            "k": /~~/,
            "u": "\u2053",
            "n": -1
        }
    ],
    "emotions": [
        {
            "k": /:.{0,1}D/,
            "u": "\uD83D\uDE03",
            "n": -1
        },
        {
            "k": /(0|O):-{0,1}\)/i,
            "u": "\uD83D\uDE07",
            "n": -1
        },
        {
            "k": /:beer:/,
            "u": "\uD83C\uDF7A",
            "n": -1
        },
        {
            "k": /3:-{0,1}\)/,
            "u": "\uD83D\uDE08",
            "n": -1
        },
        {
            "k": /<3/,
            "u":"\u2764",
            "n": -1
        },
// disabled due to urls :/
//        {
//            "k": /o.O|:\/|:\\/,
//            "u": "\uD83D\uDE15",
//            "n": -1
//        },
        {
            "k": /:\'\(/,
            "u": "\uD83D\uDE22",
            "n": -1
        },
        {
            "k": /(:|=)-{0,1}\(/,
            "u": "\uD83D\uDE1E",
            "n": -1
        },
        {
            "k": /8(\)<|\|)/,
            "u": "\uD83D\uDE0E",
            "n": -1
        },
        {
            "k": /(:|=)-{0,1}(\)|\])/,
            "u": "\uD83D\uDE0A",
            "n": -1
        },
        {
            "k": /(\(|\[)-{0,1}(:|=)/,
            "u": "\uD83D\uDE0A",
            "n": -1
        },
        {
            "k": /:\*/,
            "u": "\uD83D\uDE17",
            "n": -1
        },
        {
            "k": /\^-{0,1}\^/,
            "u": "\uD83D\uDE06",
            "n": -1
        },
        {
            "k": /:p/i,
            "u": "\uD83D\uDE1B",
            "n": -1
        },
        {
            "k": /;-{0,1}\)/,
            "u": "\uD83D\uDE09",
            "n": -1
        },
        {
            "k": /\(-{0,1};/,
            "u": "\uD83D\uDE09",
            "n": -1
        },
        {
            "k": /:(O|0)/,
            "u": "\uD83D\uDE2E",
            "n": -1
        },
        {
            "k": /:@/,
            "u": "\uD83D\uDE31",
            "n": -1
        },
        {
            "k": /:\|/,
            "u": "\uD83D\uDE10",
            "n": -1
        }
    ],
    "signs": [
        {
            "k": / tel( |:|=)/i,
            "u": " \u2121",
            "n": 4
        },
        {
            "k": /^tel( |:|=)/i,
            "u": "\u2121",
            "n": 3
        },
        {
            "k": / fax( |:|=)/i,
            "u": " \u213B",
            "n": 4
        },
        {
            "k": /^fax( |:|=)/i,
            "u": "\u213B",
            "n": 3
        }
    ],
    "fractions": [
        {
            "k": /1\/2/,
            "u": "\u00BD",
            "n": -1
        },
        {
            "k": /1\/3/,
            "u": "\u2153",
            "n": -1
        },
        {
            "k": /2\/3/,
            "u": "\u2154",
            "n": -1
        },
        {
            "k": /1\/4/,
            "u": "\u00BC",
            "n": -1
        },
        {
            "k": /3\/4/,
            "u": "\u00BE",
            "n": -1
        },
        {
            "k": /1\/5/,
            "u": "\u2155",
            "n": -1
        },
        {
            "k": /2\/5/,
            "u": "\u2156",
            "n": -1
        },
        {
            "k": /3\/5/,
            "u": "\u2157",
            "n": -1
        },
        {
            "k": /4\/5/,
            "u": "\u2158",
            "n": -1
        },
        {
            "k": /1\/6/,
            "u": "\u2159",
            "n": -1
        },
        {
            "k": /5\/6/,
            "u": "\u215A",
            "n": -1
        },
        {
            "k": /1\/7/,
            "u": "\u2150",
            "n": -1
        },
        {
            "k": /1\/8/,
            "u": "\u215B",
            "n": -1
        },
        {
            "k": /3\/8/,
            "u": "\u215C",
            "n": -1
        },
        {
            "k": /5\/8/,
            "u": "\u215D",
            "n": -1
        },
        {
            "k": /7\/8/,
            "u": "\u215E",
            "n": -1
        },
        {
            "k": /1\/9/,
            "u": "\u2151",
            "n": -1
        },
        {
            "k": /1\/10/,
            "u": "\u2152",
            "n": -1
        }
    ]
};

/*
 * a stack for undo...
 * element for the unicodeConversionStack
 * {
        k: original string that's replaced
        u: unicode
        p: position in string
        l: length of k
        m: new string length after convertion
 * }
 */
var unicodeConversionStack = [];
//we want to handle new typed text after the last conversion.
var lastConvertedIndex = -1;

function convert2Unicodes(s, ta) {

    var tmp = s;

    //check if there is a deletion...
    //NOTE: BUGGY... can't handle everytime...
    if (unicodeConversionStack.length>0 && s.length < unicodeConversionStack[0].m){
        //check if a replaced unicode was deleted...
        for (var i=unicodeConversionStack.length-1; i>=0; i--){
            //get position and check the positions are same...
            var ni = s.indexOf(unicodeConversionStack[i].u);
            if (ni > -1 && s[ni] !== unicodeConversionStack[i].p){
                var op = -1;
                for (var j=i-1; j>=0; j--){
                    if (unicodeConversionStack[j].u === unicodeConversionStack[i].u){
                        if (unicodeConversionStack[j].p === ni){
                            op = -1;
                            break;
                        }
                        op = unicodeConversionStack[j].p;
                    }
                }
                if (op === -1) {
                    //remove deleted unicode...
                    unicodeConversionStack.splice(i, 1);
                } else {
                    //update the position of the unicode!
                    unicodeConversionStack[i].p = ni;
                }
            }
        }
        unicodeConversionStack[0].m = s.length;
    }

    if (s.length < lastConvertedIndex)
        lastConvertedIndex = s.length;

    if ($.Options.getUnicodeConversionOpt() === "enable" || $.Options.getConvertPunctuationsOpt()){

        var list = unicodeConversionList.ponctuations;
        for (var i=0; i<list.length; i++){
            var kl = list[i].k.exec(tmp);
            if (kl && kl.length > 0 && kl.index >= lastConvertedIndex) {
                var nc = "";
                if (list[i].n > -1){
                    //if it's necessary, get any next char to prevent from any data loss
                    nc = tmp[kl.index + list[i].n];
                }
                tmp = tmp.replace(list[i].k, list[i].u + nc);
                var len = s.length - tmp.length + list[i].u.length;
                unicodeConversionStack.unshift({
                    "k": s.substr(kl.index, len),
                    "u": list[i].u,
                    "p": kl.index,
                    "l": len,
                    "m": tmp.length
                });
                s = tmp;
                lastConvertedIndex = tmp.length;
            }
        }
    }

    if ($.Options.getUnicodeConversionOpt() === "enable"|| $.Options.getConvertEmotionsOpt()){

        var list = unicodeConversionList.emotions;
        for (var i=0; i<list.length; i++){
            var kl = list[i].k.exec(tmp);
            if (kl && kl.length > 0 && kl.index >= lastConvertedIndex) {
                var nc = "";
                if (list[i].n > -1){
                    //if it's necessary, get any next char to prevent from any data loss
                    nc = tmp[kl.index + list[i].n];
                }
                tmp = tmp.replace(list[i].k, list[i].u + nc);
                var len = s.length - tmp.length + list[i].u.length;
                unicodeConversionStack.unshift({
                    "k": s.substr(kl.index, len),
                    "u": list[i].u,
                    "p": kl.index,
                    "l": len,
                    "m": tmp.length
                });
                s = tmp;
                lastConvertedIndex = tmp.length;
            }
        }
    }

    if ($.Options.getUnicodeConversionOpt() === "enable"|| $.Options.getConvertSignsOpt()){

        var list = unicodeConversionList.signs;
        for (var i=0; i<list.length; i++){
            var kl = list[i].k.exec(tmp);
            if (kl && kl.length > 0 && kl.index >= lastConvertedIndex) {
                var nc = "";
                if (list[i].n > -1){
                    //if it's necessary, get any next char to prevent from any data loss
                    nc = tmp[kl.index + list[i].n];
                }
                tmp = tmp.replace(list[i].k, list[i].u + nc);
                var len = s.length - tmp.length + list[i].u.length;
                unicodeConversionStack.unshift({
                    "k": s.substr(kl.index, len),
                    "u": list[i].u,
                    "p": kl.index,
                    "l": len,
                    "m": tmp.length
                });
                s = tmp;
                lastConvertedIndex = tmp.length;
            }
        }
    }

    if ($.Options.getUnicodeConversionOpt() === "enable"|| $.Options.getConvertFractionsOpt()){

        var list = unicodeConversionList.fractions;
        for (var i=0; i<list.length; i++){
            var kl = list[i].k.exec(tmp);
            if (kl && kl.length > 0 && kl.index >= lastConvertedIndex) {
                var nc = "";
                if (list[i].n > -1){
                    //if it's necessary, get any next char to prevent from any data loss
                    nc = tmp[kl.index + list[i].n];
                }
                tmp = tmp.replace(list[i].k, list[i].u + nc);
                var len = s.length - tmp.length + list[i].u.length;
                unicodeConversionStack.unshift({
                    "k": s.substr(kl.index, len),
                    "u": list[i].u,
                    "p": kl.index,
                    "l": len,
                    "m": tmp.length
                });
                s = tmp;
                lastConvertedIndex = tmp.length;
            }
        }
    }

    if (unicodeConversionStack.length > 0){
        var ub = ta.closest(".post-area-new").find(".undo-unicode");
        ub.text("undo: " + unicodeConversionStack[0].u);
        $.MAL.enableButton(ub);
    } else {
        $.MAL.disableButton(ta.closest(".post-area-new").find(".undo-unicode"));
    }

    return tmp;
}

//BUGGY... if user deletes something in the middle, stack could be deformed...
function undoLastUnicode(e) {
    e.stopPropagation();
    e.preventDefault();

    if (unicodeConversionStack.length === 0)
        return;

    var uc = unicodeConversionStack.shift();

    $ta = $(this).closest(".post-area-new").find("textarea");
    var pt = $ta.val();

    if (pt.substr(uc.p, uc.u.length) === uc.u)
        $ta.val(pt.substr(0,uc.p) + uc.k + pt.substr(uc.p + uc.u.length));
    else {
        //if it can't be found at its index, last unicode will be removed
        var i = pt.lastIndexOf(uc.u);
        if (i>-1) {
            $ta.val(pt.substr(0,i) + uc.k + pt.substr(i + uc.u.length));
        }
    }

    if (unicodeConversionStack.length > 0)
        $(this).text("undo: " + unicodeConversionStack[0].u);
    else
        $.MAL.disableButton($(this));

    lastConvertedIndex = $ta.val().length;
}

var postSubmit = function(e)
{
    e.stopPropagation();
    e.preventDefault();
    var $this = $( this );
    var $replyText = $this.closest(".post-area-new").find("textarea");

    var $postOrig = $this.closest(".post-data");

    if (!$postOrig.length) {
        $postOrig = $this.closest(".modal-content").find(".post-data");
    }
    
    newPostMsg($replyText.val(), $postOrig);

    $replyText.val("");
    $replyText.attr("placeholder", polyglot.t("Your message was sent!"));
    var tweetForm = $this.parents("form");
    var remainingCount = tweetForm.find(".post-area-remaining");
    remainingCount.text(140);
    $replyText.attr("placeholder", "Your message was sent!");
    closeModal($this);
    if($this.closest('.post-area,.post-reply-content')){
        $('.post-area-new').removeClass('open').find('textarea').blur();
    };
    setTimeout('requestTimelineUpdate("latest",postsPerRefresh,followingUsers,promotedPostsOnly)', 1000);
}


var retweetSubmit = function(e)
{
    e.stopPropagation();
    e.preventDefault();
    var $this = $( this );

    var $postOrig = $this.closest(".modal-wrapper").find(".post-data");

    newRtMsg($postOrig);

    closeModal($this);
}

function changeStyle() {
    var style, profile, menu;
    var theme = $.Options.getTheme();
    if(theme == 'original')
    {
        style = 'css/style.css';
        profile = 'css/profile.css';
    }else
    {
        style = 'theme_calm/css/style.css';
        profile = 'theme_calm/css/profile.css';
    }
    $('#stylecss').attr('href', style);
    $('#profilecss').attr('href', profile);
    $("<style type='text/css'> .selectable_theme{display:none!important;}\n" +
       ".theme_" + theme + "{display:block!important;}</style>").appendTo("head");
    setTimeout(function(){$(menu).removeAttr('style')}, 0);
}

function mensAutocomplete() {
        var suggests = [];

        for(var i = 0; i < followingUsers.length; i++){
                if(followingUsers[i] == localStorage.defaultScreenName) continue;
                suggests.push(followingUsers[i]);
        }
        suggests.reverse();
        $('textarea').textcomplete([
    { // html
        mentions: suggests,
        match: /\B@(\w*)$/,
        search: function (term, callback) {
            callback($.map(this.mentions, function (mention) {
                return mention.indexOf(term) === 0 ? mention : null;
            }));
        },
        index: 1,
        replace: function (mention) {
            return '@' + mention + ' ';
        }
    }
])
}

function initInterfaceCommon() {
    $( "body" ).on( "click", function(event) { 
        if($(event.target).hasClass('cancel')) closeModal($(this));
    });
    $(".cancel").on('click', function(event){
        if(!$(event.target).hasClass("cancel")) return;
        if($(".modal-content").attr("style") != undefined){$(".modal-content").removeAttr("style")};
        $('.modal-back').css('display', 'none');
    });
    $('.modal-back').on('click', function(){
        if($('.modal-content .direct-messages-list')[0]) return;
        directMessagesPopup();
        $(".modal-content").removeAttr("style");
    });
    $('.dropdown-menu').on('keydown', function(e){
            e = event || window.event;
            e.stopPropagation();
    })
    $('.post-text').on('click', 'a', function(e){
            e.stopPropagation();
    });
    $( ".post-reply" ).bind( "click", postReplyClick );
    $( ".post-propagate" ).bind( "click", reTwistPopup );
    $( ".userMenu-config-dropdown" ).bind( "click", dropDownMenu );
    $( ".config-menu" ).clickoutside( closeThis );
    $( ".module.post" ).bind( "click", function(e) {
        if(window.getSelection() == 0)postExpandFunction(e,$(this)); });
    $( ".post-area-new" ).bind( "click", function(e) {
        composeNewPost(e,$(this));} );
    $( ".post-area-new" ).clickoutside( unfocusThis );
    $( ".post-submit").click( postSubmit );
    $( ".modal-propagate").click( retweetSubmit );

    if ($.Options.getUnicodeConversionOpt() === "disable")
        $( ".undo-unicode" ).click( undoLastUnicode ).css("display", "none");
    else
        $( ".undo-unicode" ).click( undoLastUnicode );

    var $replyText = $( ".post-area-new textarea" );
    $replyText.on("keyup", replyTextKeypress );

    $( ".open-profile-modal").bind( "click", openProfileModal );
    $( ".open-hashtag-modal").bind( "click", openHashtagModal );
    $( ".open-following-modal").bind( "click", openFollowingModal );
    $( ".userMenu-connections a").bind( "click", openMentionsModal );

}