/**
 * @file    js/global.js
 *
 * copyright (c) 2006-2008 Frank Hellenkamp [jonas@depagecms.net]
 *
 * @author    Frank Hellenkamp [jonas@depagecms.net]
 */

// {{{ global variables
var js;
var isIE  = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
var isWin = (navigator.appVersion.toLowerCase().indexOf("win") != -1) ? true : false;
var isOpera = (navigator.userAgent.indexOf("Opera") != -1) ? true : false;
var fsVersion;
// }}}

// global helpers
// {{{ eventRegistrar()
// written by Dean Edwards, 2005
// with input from Tino Zijdel, Matthias Miller, Diego Perini
// http://dean.edwards.name/weblog/2005/10/add-event/
// 2007-07-10 TKO - Removed check for body in schedule because of problems with Firefox 2.0

function addEvent(element, type, handler) {
    // Modification by Tanny O'Haley, http://tanny.ica.com to add the
    // DOMContentLoaded for all browsers.
    if (type == "DOMContentLoaded" || type == "domload") {
        addDOMLoadEvent(handler);
        return;
    }
    
    if (element.addEventListener) {
        element.addEventListener(type, handler, false);
    } else {
        // assign each event handler a unique ID
        if (!handler.$$guid) handler.$$guid = addEvent.guid++;
        // create a hash table of event types for the element
        if (!element.events) element.events = {};
        // create a hash table of event handlers for each element/event pair
        var handlers = element.events[type];
        if (!handlers) {
            handlers = element.events[type] = {};
            // store the existing event handler (if there is one)
            if (element["on" + type]) {
                handlers[0] = element["on" + type];
            }
        }
        // store the event handler in the hash table
        handlers[handler.$$guid] = handler;
        // assign a global event handler to do all the work
        element["on" + type] = handleEvent;
    }
};
// a counter used to create unique IDs
addEvent.guid = 1;

function removeEvent(element, type, handler) {
    if (element.removeEventListener) {
        element.removeEventListener(type, handler, false);
    } else {
        // delete the event handler from the hash table
        if (element.events && element.events[type]) {
            delete element.events[type][handler.$$guid];
        }
    }
};

function handleEvent(event) {
    var returnValue = true;
    // grab the event object (IE uses a global event object)
    event = event || fixEvent(((this.ownerDocument || this.document || this).parentWindow || window).event);
    event.target = event.target || event.srcElement;
    // get a reference to the hash table of event handlers
    var handlers = this.events[event.type];
    // execute each event handler
    for (var i in handlers) {
        this.$$handleEvent = handlers[i];
        if (this.$$handleEvent(event) === false) {
            returnValue = false;
        }
    }
    return returnValue;
};

function fixEvent(event) {
    // add W3C standard event methods
    event.preventDefault = fixEvent.preventDefault;
    event.stopPropagation = fixEvent.stopPropagation;
    return event;
};
fixEvent.preventDefault = function() {
    this.returnValue = false;
};
fixEvent.stopPropagation = function() {
    this.cancelBubble = true;
};

// End Dean Edwards addEvent.

// Tino Zijdel - crisp@xs4all.nl This little snippet fixes the problem that the onload attribute on 
// the body-element will overwrite previous attached events on the window object for the onload event.
if (!window.addEventListener) {
    document.onreadystatechange = function(){
        if (window.onload && window.onload != handleEvent) {
            addEvent(window, 'load', window.onload);
            window.onload = handleEvent;
        }
    }
}

// Here are my functions for adding the DOMContentLoaded event to browsers other
// than Mozilla.

// Array of DOMContentLoaded event handlers.
window.onDOMLoadEvents = new Array();
window.DOMContentLoadedInitDone = false;

// Function that adds DOMContentLoaded listeners to the array.
function addDOMLoadEvent(listener) {
    window.onDOMLoadEvents[window.onDOMLoadEvents.length]=listener;
}

// Function to process the DOMContentLoaded events array.
function DOMContentLoadedInit() {
    // quit if this function has already been called
    if (window.DOMContentLoadedInitDone) return;

    // flag this function so we don't do the same thing twice
    window.DOMContentLoadedInitDone = true;

    // iterates through array of registered functions 
    for (var i=0; i<window.onDOMLoadEvents.length; i++) {
        var func = window.onDOMLoadEvents[i];
        func();
    }
}

function DOMContentLoadedScheduler() {
    // quit if the init function has already been called
    if (window.DOMContentLoadedInitDone) return true;
    
    // First, check for Safari or KHTML.
    // Second, check for IE.
    //if DOM methods are supported, and the body element exists
    //(using a double-check including document.body, for the benefit of older moz builds [eg ns7.1] 
    //in which getElementsByTagName('body')[0] is undefined, unless this script is in the body section)
    if(/KHTML|WebKit/i.test(navigator.userAgent)) {
        if(/loaded|complete/.test(document.readyState)) {
            DOMContentLoadedInit();
        } else {
            // Not ready yet, wait a little more.
            setTimeout("DOMContentLoadedScheduler()", 250);
        }
    } else if(document.getElementById("__ie_onload")) {
        return true;
    }

    // Check for custom developer provided function.
    if(typeof DOMContentLoadedCustom == "function") {
        if(typeof document.getElementsByTagName != 'undefined' && (document.getElementsByTagName('body')[0] != null || document.body != null)) {
            // Call custom function.
            if(DOMContentLoadedCustom()) {
                DOMContentLoadedInit();
            } else {
                // Not ready yet, wait a little more.
                setTimeout("DOMContentLoadedScheduler()", 250);
            }
        }
    }

    return true;
}

// Schedule to run the init function.
setTimeout("DOMContentLoadedScheduler()", 250);

// Just in case window.onload happens first, add it there too.
addEvent(window, "load", DOMContentLoadedInit);

// If addEventListener supports the DOMContentLoaded event.
if(document.addEventListener)
    document.addEventListener("DOMContentLoaded", DOMContentLoadedInit, false);

/* for Internet Explorer */
/*@cc_on @*/
/*@if (@_win32)
    document.write("<script id=__ie_onload defer src=\"//:\"><\/script>");
    var script = document.getElementById("__ie_onload");
    script.onreadystatechange = function() {
        if (this.readyState == "complete") {
            DOMContentLoadedInit(); // call the onload handler
        }
    };
/*@end @*/
// }}}
// {{{ includeJs()
function includeJs(file, js_loaded) {
    var header = document.getElementsByTagName('head')[0];
    js = document.createElement('script');
    js.setAttribute('type', 'text/javascript');
    js.setAttribute('src', file);
    header.appendChild(js);

    if (js_loaded) {
        js.onreadystatechange = function () {
            if (js.readyState == 'complete') {
                js_loaded();
            }
        }
        addEvent(js, "load", js_loaded);
    }

    return false;
}
// }}}
// {{{ createCSS()
function createCSS(selector, value) {
    var header = document.getElementsByTagName("head")[0];

    istyle = document.createElement("style");
    istyle.setAttribute("type", "text/css");
    istyle.setAttribute("media", "screen");

    if (!isIE) istyle.appendChild(document.createTextNode(selector + " {" + value + "}"));

    header.appendChild(istyle);
    if (isIE && !isOpera && document.styleSheets && document.styleSheets.length > 0) {
	var istyles = document.styleSheets[document.styleSheets.length - 1];
	if (typeof istyles.addRule == "object") {
	    istyles.addRule(selector, value);
	}
    }
}
// }}}
// {{{ setNodeAttribute()
function setNodeAttribute(node, attribute, value) {
    if (attribute == "class") {
        node.className = value;
    } else if (attribute == "checked") {
        node.defaultChecked = value;
    } else if (attribute == "for") {
        node.htmlFor = value;
    } else if (attribute == "style") {
        node.style.cssText = value;
    } else {
        node.setAttribute(attribute, value);
    }
}
// }}}
// {{{ getElementsByClassName()
function getElementsByClassName(tagName, className) {
    if (typeof className == "string") {
        className = [className];
    }
    elements = [];
    es = document.getElementsByTagName(tagName);
    for (i = 0; i < es.length; i++) {
        if (es[i].getAttribute("class")) {
            cname = " " + es[i].getAttribute("class") + " ";
        } else {
            cname = " " + es[i].className + " ";
        }
        for (j = 0; j < className.length; j++) {
            if (cname.indexOf(" " + className[j] + " ") != -1) {
                elements.push(es[i]);
            }
        }
    }
    
    return elements;
}
// }}}

// javascript flash detection
// {{{ fsControlVersion()
function fsControlVersion() {
    var version;
    var axo;
    var e;

    try {
        // version will be set for 7.X or greater players
        axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.7");
        version = axo.GetVariable("$version");
    } catch (e) {
    }
    if (!version) {
        try {
            // version will be set for 6.X players only
            axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.6");
            
            // installed player is some revision of 6.0
            // GetVariable("$version") crashes for versions 6.0.22 through 6.0.29,
            // so we have to be careful. 
            
            // default to the first public version
            version = "WIN 6,0,21,0";

            // throws if AllowScripAccess does not exist (introduced in 6.0r47)        
            axo.AllowScriptAccess = "always";

            // safe to call for 6.0r47 or greater
            version = axo.GetVariable("$version");

        } catch (e) {
        }
    }
    if (!version) {
        try {
            // version will be set for 4.X or 5.X player
            axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.3");
            version = axo.GetVariable("$version");
        } catch (e) {
        }
    }
    if (!version) {
        try {
            // version will be set for 3.X player
            axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.3");
            version = "WIN 3,0,18,0";
        } catch (e) {
        }
    }
    if (!version) {
        try {
            // version will be set for 2.X player
            axo = new ActiveXObject("ShockwaveFlash.ShockwaveFlash");
            version = "WIN 2,0,0,11";
        } catch (e) {
            version = -1;
        }
    }
    
    return version;
}
// }}}
// {{{ fsGetVer()
function fsGetVer(){
    if (fsVersion != undefined) {
	return fsVersion;
    }
    // JavaScript helper required to detect Flash Player PlugIn version information
    // NS/Opera version >= 3 check for Flash plugin in plugin array
    var fsVersion = -1;
    
    if (navigator.plugins != null && navigator.plugins.length > 0) {
        if (navigator.plugins["Shockwave Flash 2.0"] || navigator.plugins["Shockwave Flash"]) {
            var swVer2 = navigator.plugins["Shockwave Flash 2.0"] ? " 2.0" : "";
            var flashDescription = navigator.plugins["Shockwave Flash" + swVer2].description;            
            var descArray = flashDescription.split(" ");
            var tempArrayMajor = descArray[2].split(".");
            var versionMajor = tempArrayMajor[0];
            var versionMinor = tempArrayMajor[1];
            if ( descArray[3] != "" ) {
                tempArrayMinor = descArray[3].split("r");
            } else {
                tempArrayMinor = descArray[4].split("r");
            }
            var versionRevision = tempArrayMinor[1] > 0 ? tempArrayMinor[1] : 0;
            var fsVersion = versionMajor + "." + versionMinor + "." + versionRevision;
        }
    }
    // MSN/WebTV 2.6 supports Flash 4
    else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.6") != -1) fsVersion = 4;
    // WebTV 2.5 supports Flash 3
    else if (navigator.userAgent.toLowerCase().indexOf("webtv/2.5") != -1) fsVersion = 3;
    // older WebTV supports Flash 2
    else if (navigator.userAgent.toLowerCase().indexOf("webtv") != -1) fsVersion = 2;
    else if ( isIE && isWin && !isOpera ) {
        fsVersion = fsControlVersion();
    }    
    return fsVersion;
}
// }}}
// {{{ fsHasFlashVer()
function fsHasFlashVer(reqMajorVer, reqMinorVer, reqRevision) {
    // When called with reqMajorVer, reqMinorVer, reqRevision returns true if that version or greater is available
    fsVersionStr = fsGetVer();
    if (fsVersionStr == -1 ) {
        return false;
    } else if (fsVersionStr != 0) {
        if(isIE && isWin && !isOpera) {
            // Given "WIN 2,0,0,11"
            tempArray         = fsVersionStr.split(" ");     // ["WIN", "2,0,0,11"]
            tempString        = tempArray[1];            // "2,0,0,11"
            versionArray      = tempString.split(",");    // ['2', '0', '0', '11']
        } else {
            versionArray      = fsVersionStr.split(".");
        }
        var versionMajor      = versionArray[0];
        var versionMinor      = versionArray[1];
        var versionRevision   = versionArray[2];

	// is the major.revision >= requested major.revision AND the minor version >= requested minor
        if (versionMajor > parseFloat(reqMajorVer)) {
            return true;
        } else if (versionMajor == parseFloat(reqMajorVer)) {
            if (versionMinor > parseFloat(reqMinorVer)) {
                return true;
            } else if (versionMinor == parseFloat(reqMinorVer)) {
                if (versionRevision >= parseFloat(reqRevision)) {
                    return true;
		}
            }
        }
        return false;
    }
}
// }}}

// replace content, depending on reader capabilities
// {{{ replaceEmailChars()
function replaceEmailChars(mail) {
    mail = unescape(mail);
    mail = mail.replace(/ \*at\* /g, "@");
    mail = mail.replace(/ \*dot\* /g, ".");
    mail = mail.replace(/ \*punkt\* /g, ".");
    mail = mail.replace(/ \*underscore\* /g, "_");
    mail = mail.replace(/ \*unterstrich\* /g, "_");
    mail = mail.replace(/ \*minus\* /g, "-");
    mail = mail.replace(/mailto: /, "mailto:");

    return mail;
}
// }}}
// {{{ replaceEmailRefs()
function replaceEmailRefs() {
    ref = document.getElementsByTagName("a");
    for (i = 0; i < ref.length; i++) {
	if (ref[i].href.indexOf("mailto:") == 0) {
	    ref[i].href = replaceEmailChars(ref[i].href);
	    if (ref[i].firstChild.data.indexOf(" *at* ") > 0) {
		//ref[i].firstChild.data = replaceEmailChars(ref[i].firstChild.data).replace(/@/, "<span>@</span>");
		ref[i].innerHTML = replaceEmailChars(ref[i].firstChild.data).replace(/@/, "<span>@</span>");
	    }
	}
    }
}
// }}}
// {{{ replaceFlashContent()
function replaceFlashContent() {
    replaceFlashImages();
    replaceFlashMovies();
}
// }}}
// {{{ replaceFlashImages()
function replaceFlashImages() {
    imgs = getElementsByClassName("img", ["flash_repl", "flash_repl_trans"]);
    if (fsHasFlashVer(8, 0, 0)) {
	for (i = imgs.length - 1; i >= 0; i--) {
            var iparent = imgs[i].parentNode;
            var isrc = imgs[i].src.replace(/\.jpg|\.gif|\.png/, ".swf").replace(/\&/, "&amp;");
            var iwidth = imgs[i].width;
            var iheight = imgs[i].height;
            var ialt = imgs[i].getAttribute("alt");
            var ihtml = iparent.innerHTML;
            var itransparent = imgs[i].getAttribute("class") == "flash_repl_trans" || imgs[i].className == "flash_repl_trans";

            // generate flash element
            iparent.innerHTML = "<object type=\"application/x-shockwave-flash\" data=\"" + isrc + "\" width=\"" + iwidth + "\" height=\"" + iheight + "\" " + (itransparent == true ? "wmode=\"transparent\"" : "") + " class=\"flash\"><param name=\"movie\" value=\"" + isrc + "\" />" + (itransparent == true ? "<param name=\"wmode\" value=\"transparent\" />" : "") + "</object>" + ihtml;
	}
	createCSS("img.flash_repl", "display: none !important");
	createCSS("img.flash_repl_trans", "display: none !important");
    }
}
// }}}
// {{{ replaceFlashMovies()
function replaceFlashMovies() {
    movieCont = getElementsByClassName("div", ["flash_movie"]);
    if (fsHasFlashVer(8, 0, 0)) {
	for (i = movieCont.length - 1; i >= 0; i--) {
            links = movieCont[i].getElementsByTagName("a");

            var isrc = links[0].href;
            var ihtml = movieCont[i].innerHTML;

            // generate flash element
            movieCont[i].innerHTML = "<object type=\"application/x-shockwave-flash\" data=\"" + isrc + "\"><param name=\"movie\" value=\"" + isrc + "\" /></object>" + ihtml;
	}
	createCSS(".flash_movie a img", "display: none !important");
    }
}
// }}}

// {{{ extendForms()
function extendForms() {
    addFormEvents();
    replaceTextButtons();
}
// }}}
// {{{ replaceTextButtons()
function replaceTextButtons() {
    var buttons = getElementsByClassName("input", "textbutton");

    for (i = 0; i < buttons.length; i++) {
        iparent = buttons[i].parentNode;
        if (buttons[i].type == "submit") {
            ionclick = "document." + buttons[i].form.name + ".submit(); return false;";
        } else if (buttons[i].type == "reset") {
            ionclick = "document." + buttons[i].form.name + ".reset(); return false;";
        } else {
            ionclick = buttons[i].onclick;
        }
        iparent.innerHTML = "<a href=\"#\" onclick=\"" + ionclick + "\">" + buttons[i].value + "</a>";
    }
}
// }}}
// {{{ addFormEvents()
function addFormEvents() {
    checkboxes = document.getElementsByTagName("input");
    for (i = 0; i < checkboxes.length; i++) {
        if (checkboxes[i].getAttribute("type") == "checkbox") {
            labelname = checkboxes[i].getAttribute("name");
            labels = document.getElementsByTagName("label");
            for (j = 0; j < labels.length; j++) {
                if (labels[j].htmlFor == labelname) {
                    labels[j].checkbox = checkboxes[i];
                    //it's the label for a checkbox
                    labels[j].onclick = function() {
                        this.checkbox.checked = !this.checkbox.checked;
                    };
                }
            }
        }
    }
}
// }}}

// fix different browser behaviours
// {{{ fixBrowsers()
function fixBrowsers() {
    fixFlashDisplayOpera(0);
    if (isIE && isWin) {
        includeJs("http://ie7-js.googlecode.com/svn/version/2.0(beta3)/IE8.js");
    }
}
// }}}
// {{{ fixHeightIE6()
function fixHeightIE6() {
    if (isIE && isWin) {
	document.getElementById("content").style.height = null;
	if (document.getElementById("content").offsetHeight < document.body.offsetHeight) {
	    document.getElementById("content").style.height = document.body.offsetHeight;
	}
    }
}
// }}}
// {{{ fixFlashDisplayOpera()
function fixFlashDisplayOpera(numcall) {
    if (isOpera) {
        numcall++;
        if (numcall < 20) {
            setTimeout("fixFlashDisplayOpera(" + numcall + ")", 200);
        }

        var objects = document.getElementsByTagName("object");

        for (i = 0; i < objects.length; i++) {
            if (numcall % 2 == 0) {
                objects[i].style.border = "0px solid";
            } else {
                objects[i].style.border = "none";
            }
        }
    }
}
// }}}

// register onload actions
addEvent(window, "DOMContentLoaded", replaceEmailRefs);
addEvent(window, "DOMContentLoaded", replaceFlashContent);
addEvent(window, "DOMContentLoaded", extendForms);
addEvent(window, "DOMContentLoaded", fixBrowsers);
    
/* vim:set ft=javascript sw=4 sts=4 fdm=marker : */