var
noBottom,
version;

function base64_encode( data )
{
    // phpjs.org
    var b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
    var o1, o2, o3, h1, h2, h3, h4, bits, i = ac = 0, enc="", tmp_arr = [];

    if (!data) {
        return data;
    }

    data = utf8_encode(data+'');

    do {
        o1 = data.charCodeAt(i++);
        o2 = data.charCodeAt(i++);
        o3 = data.charCodeAt(i++);

        bits = o1<<16 | o2<<8 | o3;

        h1 = bits>>18 & 0x3f;
        h2 = bits>>12 & 0x3f;
        h3 = bits>>6 & 0x3f;
        h4 = bits & 0x3f;

        tmp_arr[ac++] = b64.charAt(h1) + b64.charAt(h2) + b64.charAt(h3) + b64.charAt(h4);
    } while (i < data.length);

    enc = tmp_arr.join('');

    switch( data.length % 3 ){
        case 1:
            enc = enc.slice(0, -2) + '==';
        break;
        case 2:
            enc = enc.slice(0, -1) + '=';
        break;
    }

    return enc;
}

function displayAutoSearch(isAutoSearch)
{
    document.getElementById('auto-search-off').style.display = isAutoSearch? 'none' : 'inline';
    document.getElementById('auto-search-on').style.display = isAutoSearch? 'inline' : 'none';
}

function displayLexromd(actionUrl)
{
    var image = document.getElementById('lexromd-img'),
    tome = document.getElementById('tome').value,
    page = document.getElementById('tome-page').value;

    page = parseInt(page);

    if (validateLexromPage(tome, page)) {
        page = formatLexromPage(page);
        updateTabContents('lexromd-tab');
        image.src = actionUrl.replace('%s', tome).replace('%s', page);
    } else {
        updateTabContents('lexromd-help-tab');
    }
}

function displayNewTab(isNewTab)
{
    document.getElementById('new-tab-off').style.display = isNewTab? 'none' : 'inline';
    document.getElementById('new-tab-on').style.display = isNewTab? 'inline' : 'none';
}

function formatLexromPage(page)
{
    if (page < 10) {
        page = '00' + page;
    } else if (page < 100) {
        page = '0' + page;
    }

    return page;
}

function getcookie(name)
{
    return getrawcookie(name, true);
}

function getrawcookie(name, toUnescape) {
    var
    end,
    start,
    value = '';

    if (document.cookie.length > 0) {
        start = document.cookie.indexOf(name + "=");

        if (start != -1) {
            start = start + name.length + 1;
            end = document.cookie.indexOf(";", start);
            end == -1 && (end = document.cookie.length);
            value = document.cookie.substring(start, end);
            toUnescape && (value = unescape(value));
            value[0] == '{' && (value = json_decode(value));
            value == 'undefined'  && (value = '');
        }
    }

    return value;
}

function getGhostwordNotice(update)
{
    var ghostword = document.getElementById('ISIS_SELECT');

    if (update || !ghostword.value) {
        ghostword.value = document.getElementById('ghostword-select').value;
        document.getElementById('ghostword-form').submit();
        setDictionaryHeight('ghostword-notice');
    }
}
function getWindowHeight()
{
    var height;

    if (window.innerHeight) {
        height = window.innerHeight;
    } else if (document.documentElement && document.documentElement.clientHeight) {
        height = document.documentElement.clientHeight;
    } else if (document.body) {
        height = document.body.clientHeight;
    }

    return height;
}

function goPage(action)
{
    var
    page = document.getElementById('page'),
    volume = document.getElementById('volume');

    page && (action = action.replace('%s', page.value));
    volume && (action = action.replace('%s', volume.value));

    location.assign(action);
}

function isEnterKey(keyEvent)
{
    var keynum;

    if (window.event) { // IE
        keynum = keyEvent.keyCode;
    } else if (keyEvent.which) { // Netscape/Firefox/Opera
        keynum = keyEvent.which;
    }

    return (keynum === 13);
}


/*
 * Decodes the JSON representation into a PHP value - phpjs.org version: 1004.2314
 * adaptation: returns null instead of throwing error
 */
function json_decode(str_json) {
    var json = this.window.JSON;
    if (typeof json === 'object' && typeof json.parse === 'function') {
        return json.parse(str_json);
    }

    var cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;
    var j;
    var text = str_json;

    cx.lastIndex = 0;
    if (cx.test(text)) {
        text = text.replace(cx, function (a) {
            return '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
        });
    }

    if ((/^[\],:{}\s]*$/).test(text.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@').replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']').replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) {

        j = eval('(' + text + ')');

        return j;
    }

    // throw new SyntaxError('json_decode');
    return ''; // fix
}

/*
 * Returns the JSON representation of a value - phpjs.org version: 1004.2314
 */
function json_encode(mixed_val) {
    var json = this.window.JSON;
    if (typeof json === 'object' && typeof json.stringify === 'function') {
        return json.stringify(mixed_val);
    }

    var value = mixed_val;

    var quote = function (string) {
        var escapable = /[\\\"\u0000-\u001f\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;
        var meta = {
            '\b': '\\b',
            '\t': '\\t',
            '\n': '\\n',
            '\f': '\\f',
            '\r': '\\r',
            '"': '\\"',
            '\\': '\\\\'
        };

        escapable.lastIndex = 0;
        return escapable.test(string) ? '"' + string.replace(escapable, function (a) {
            var c = meta[a];
            return typeof c === 'string' ? c : '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
        }) + '"' : '"' + string + '"';
    };

    var str = function (key, holder) {
        var gap = '';
        var indent = '    ';
        var i = 0;
        var k = '';
        var v = '';
        var length = 0;
        var mind = gap;
        var partial = [];
        var value = holder[key];

        if (value && typeof value === 'object' && typeof value.toJSON === 'function') {
            value = value.toJSON(key);
        }

        switch (typeof value) {
        case 'string':
            return quote(value);

        case 'number':
            return isFinite(value) ? String(value) : 'null';

        case 'boolean':
        case 'null':

            return String(value);

        case 'object':
            if (!value) {
                return 'null';
            }

            gap += indent;
            partial = [];

            if (Object.prototype.toString.apply(value) === '[object Array]') {

                length = value.length;
                for (i = 0; i < length; i += 1) {
                    partial[i] = str(i, value) || 'null';
                }

                v = partial.length === 0 ? '[]' : gap ? '[\n' + gap + partial.join(',\n' + gap) + '\n' + mind + ']' : '[' + partial.join(',') + ']';
                gap = mind;
                return v;
            }

            for (k in value) {
                if (Object.hasOwnProperty.call(value, k)) {
                    v = str(k, value);
                    if (v) {
                        partial.push(quote(k) + (gap ? ': ' : ':') + v);
                    }
                }
            }

            v = partial.length === 0 ? '{}' : gap ? '{\n' + gap + partial.join(',\n' + gap) + '\n' + mind + '}' : '{' + partial.join(',') + '}';
            gap = mind;
            return v;
        }
    };

    return str('', {
        '': value
    });
}

function print()
{
    var
    child = document.getElementById('middle').firstChild,
    grandChild,
    url = 'http://' + document.domain + '/dicfro/' + version + '/print.php?content=',
    innerHTML,
    message =
    	'La page va s\'ouvrir dans un nouvel onglet ou fenêtre.\n' +
    	'Veuillez utiliser le menu du navigateur pour avoir un aperçu de la page et pour ajuster sa taille.\n' +
    	'Puis imprimez la page.\n' +
    	'(Les fenêtres contextuelles ou pop-up doivent être autorisées pour pouvoir imprimer).';

    while(child){
        if (child.nodeType === 1 && child.nodeName.toLowerCase() == 'div' && child.style.display != 'none'){
            // this is the content, errata or ghostwords node
            grandChild = child.firstChild;
            while (grandChild){
                if (grandChild.nodeType === 1){
                    if (grandChild.nodeName.toLowerCase() == 'iframe'){
                        // this is an iframe, expecting only one; e.g. an external dictionary  page
                        window.open(grandChild.src, 'dfprint'); // note: IE does not accept name with "-" character
                        alert(message);
                        return;
                    } else if (grandChild.nodeName.toLowerCase() == 'img'){
                        // this a set of images, e.g. an internal dictionary page
                        // update the images path that is one level up from print.php
                        // base64_encode() is necessary because double quotes are causing problems
                        // encodeURIComponent() because the "+" character is causing problems
                        innerHTML = encodeURIComponent(base64_encode(child.innerHTML));
                        confirm(message) && window.open(url + innerHTML, 'dfprint'); // must use letters for IE, no dash!
                        return;
                    }
                }
                grandChild = grandChild.nextSibling;
            }
        }
        child = child.nextSibling;
    }

    // note that this message is also used by print.php
    alert("Impression non disponible pour cette page !");
}

function onBlur()
{
	window.onfocus = onFocus;
}

function onFocus()
{
    var	isNewTab = getcookie('new-tab');
	
    autoSearchLastWord();
	
	window.onfocus = null;
	window.onblur = onBlur;
	
	displayNewTab(isNewTab);
}

function autoSearchLastWord()
{
    var	
	action = document.getElementById('action').value,
	isAutoSearch = getcookie('auto-search');
	
    isAutoSearch && searchLastWord(action);
	displayAutoSearch(isAutoSearch);
}

function onLoad()
{
	window.onblur = onBlur;
}

function openDict(action, dictionary)
{
    var isNewTab = getcookie('new-tab');
	
	action = action.replace('%s', dictionary);
    searchWord(action, null, isNewTab);
}

function searchLastWord(action)
{
    var
	lastWord = getcookie('last-word'),
	word = document.getElementById('word').value;
	
    (word != lastWord) && searchWord(lastWord, word);
}

function searchWord(action, word, isNewTab)
{
    word || (word = document.getElementById('word').value);
	action = action.replace('%s', word.split(',', 2)[0].split(' ', 2)[0]);

    if (isNewTab) {
        window.open(action);
	} else {
        location.assign(action);
	}
}

function setAutoSearch()
{
	setcookie('auto-search', true);
    autoSearchLastWord();
	displayAutoSearch(true);
}

/*
 * Send a cookie - phpjs.org version: 1004.2314
 * escaping/unescaping because encoding/decoding does not handle UTF8 well!
 */
function setcookie(name, value, expires, path, domain, secure) {
    // return this.setrawcookie(name, encodeURIComponent(value), expires, path, domain, secure);
    return this.setrawcookie(name, value, expires, path, domain, secure, true); // fix
}

function setDictionaryHeight(id)
{
    var
    height = getWindowHeight(),
    bottomMargin = noBottom? 20 : 50,
    middle;

    if (id ) {
        bottomMargin += 2;
    } else {
        id = 'middle';
    }

    middle = document.getElementById(id);
    // resizes the height if different from 0!
    // note that this might not be the case when loaded thru an iframe
    // that is not being displayed, ex. loaded by MultiDic
    height && (middle.style.height = (height - middle.offsetTop - bottomMargin) + 'px');
}

function setNewTab()
{
	setcookie('new-tab', true);
    displayNewTab(true);
}

/*
 * Send a cookie with no url encoding of the value - adapted from phpjs.org version: 1004.2314
 */
function setrawcookie(name, value, expires, path, domain, secure, toEscape) {
    // name: the name of the cookie
    // value: the value of the cookie
    // expires: the expire date, default to 24 hours, set to 1 (remove cookie) if the value is empty
    // path: the path, defaults to "/dicfro/"
    // domain: the domain
    // secure: ...
    // toEscape: the value must be "escaped"

    // fix
    var date = new Date;
    expires || (expires = 24*3600);
    path || (path = '/dicfro/');
    value === null || typeof value == 'string' || typeof value == 'number' ||
    typeof value == 'boolean' || (value = json_encode(value));
    value == '{}' && (value = '');
    value || (expires = 1);
    toEscape && (value = escape(value));

    if (expires instanceof Date) {
        expires = expires.toGMTString();
    } else if (typeof(expires) == 'number') {
        expires = (new Date(+(new Date()) + expires * 1e3)).toGMTString();
    }

    var r = [name + "=" + value],
    s = {},
    i = '';
    s = {
        expires: expires,
        path: path,
        domain: domain
    };
    for (i in s) {
        s[i] && r.push(i + "=" + s[i]);
    }

    return secure && r.push("secure"),
    this.window.document.cookie = r.join(";"),
    true;
}

function unsetAutoSearch()
{
    displayAutoSearch(false);
	setcookie('auto-search', false);
}

function unsetNewTab()
{
    displayNewTab(false);
	setcookie('new-tab', false);
}

function updateTabContents(target)
{
    var
    sections = ['content', 'errata', 'ghostwords', 'lexromd', 'lexromd-help' ],
    tabs = ['content-tab', 'errata-tab', 'ghostwords-tab', 'lexromd-tab', 'lexromd-help-tab' ],
    sectionId,
    tabId,
    section,
    tab,
    i;

    for (i in sections) {
        sectionId = sections[i];
        tabId = tabs[i];

        section = document.getElementById(sectionId);
        section && (section.style.display = tabId == target ? 'inline': 'none');
        tab = document.getElementById(tabId);
        tab && (tab.className = tabId == target ? 'tab-selected': 'tab');
    }
}

function utf8_encode( string )
{
    // phpjs.org
    string = (string+'').replace(/\r\n/g, "\n").replace(/\r/g, "\n");

    var utftext = "";
    var start, end;
    var stringl = 0;

    start = end = 0;
    stringl = string.length;
    for (var n = 0; n < stringl; n++) {
        var c1 = string.charCodeAt(n);
        var enc = null;

        if (c1 < 128) {
            end++;
        } else if((c1 > 127) && (c1 < 2048)) {
            enc = String.fromCharCode((c1 >> 6) | 192) + String.fromCharCode((c1 & 63) | 128);
        } else {
            enc = String.fromCharCode((c1 >> 12) | 224) + String.fromCharCode(((c1 >> 6) & 63) | 128) + String.fromCharCode((c1 & 63) | 128);
        }
        if (enc != null) {
            if (end > start) {
                utftext += string.substring(start, end);
            }
            utftext += enc;
            start = end = n+1;
        }
    }

    if (end > start) {
        utftext += string.substring(start, string.length);
    }

    return utftext;
}

function validateLexromPage(tome, page)
{
    return page >= 1 &&
        (tome == 2 && page <= 536) ||
        (tome == 3 && page <= 611) ||
        (tome == 4 && page <= 676) ||
        (tome == 5 && page <= 612) ||
        (tome == 6 && page <= 40);
}