/*
 * Tab Pane
 *
 * This script was created by Erik Arvidsson (erik(at)eae.net)
 * for WebFX (http://webfx.eae.net)
 * Copyright 2002
 * 
 * For usage see license at http://webfx.eae.net/license.html   
 *
 * Version: 1.0
 * Created: 2002-01-??  First working version
 * Updated: 2002-02-17  Cleaned up for 1.0 public version
 *
 * Dependencies: *.css - a css file to define the layout
 *
 */


// This function is used to define if the browser supports the needed
// features
function hasSupport() {

    if (typeof hasSupport.support != "undefined")
        return hasSupport.support;
    
    var ie55 = /msie 5\.[56789]/i.test( navigator.userAgent );
    
    hasSupport.support = ( typeof document.implementation != "undefined" &&
            document.implementation.hasFeature( "html", "1.0" ) || ie55 )
            
    // IE55 has a serious DOM1 bug... Patch it!
    if ( ie55 ) {
        document._getElementsByTagName = document.getElementsByTagName;
        document.getElementsByTagName = function ( sTagName ) {
            if ( sTagName == "*" )
                return document.all;
            else
                return document._getElementsByTagName( sTagName );
        };
    }

    return hasSupport.support;
}

///////////////////////////////////////////////////////////////////////////////////
// The constructor for tab panes
//
// el : HTMLElement     The html element used to represent the tab pane
// bUseCookie : Boolean Optional. Default is true. Used to determine whether to us
//                      persistance using cookies or not
//
function WebFXTabPane( el, bUseCookie ) {
    if ( !hasSupport() || el == null ) return;
    
    this.element = el;
    this.element.tabPane = this;
    this.pages = [];
    this.selectedIndex = null;
    this.useCookie = bUseCookie != null ? bUseCookie : true;
    
    // add class name tag to class name
    this.element.className = this.classNameTag + " " + this.element.className;
    
    // add tab row
    this.tabRow = document.createElement( "div" );
    this.tabRow.className = "tab-row";
    el.insertBefore( this.tabRow, el.firstChild );

    var tabIndex = 0;
    if ( this.useCookie ) {
        tabIndex = Number( WebFXTabPane.getCookie( "webfxtab_" + this.element.id ) );
        if ( isNaN( tabIndex ) )
            tabIndex = 0;
    }
    this.selectedIndex = tabIndex;
    
    // loop through child nodes and add them
    var cs = el.childNodes;
    var n;
    for (var i = 0; i < cs.length; i++) {
        if (cs[i].nodeType == 1 && (cs[i].className == "tab-page-rouge" || cs[i].className == "tab-page-jaune" || cs[i].className == "tab-page-bleu" || cs[i].className == "tab-page-rose")) {
            this.addTabPage( cs[i] );
        }
    }
}

WebFXTabPane.prototype = {

    classNameTag:       "dynamic-tab-pane-control",

    setSelectedIndex:   function ( n ) {
        if (this.selectedIndex != n) {
            if (this.selectedIndex != null && this.pages[ this.selectedIndex ] != null )
                this.pages[ this.selectedIndex ].hide();
            this.selectedIndex = n;
            this.pages[ this.selectedIndex ].show();
            
            if ( this.useCookie )
                WebFXTabPane.setCookie( "webfxtab_" + this.element.id, n ); // session cookie
        }
    },
    
    getSelectedIndex:   function () {
        return this.selectedIndex;
    },
    
    addTabPage: function ( oElement ) {
        if ( !hasSupport() ) return;
        
        if ( oElement.tabPage == this ) // already added
            return oElement.tabPage;
    
        var n = this.pages.length;
        var tp = this.pages[n] = new WebFXTabPage( oElement, this, n );
        tp.tabPane = this;
        
        // move the tab out of the box
        this.tabRow.appendChild( tp.tab );
                
        if ( n == this.selectedIndex )
            tp.show();
        else
            tp.hide();
            
        return tp;
    }   
};

// Cookie handling
WebFXTabPane.setCookie = function ( sName, sValue, nDays ) {
    var expires = "";
    if ( nDays ) {
        var d = new Date();
        d.setTime( d.getTime() + nDays * 24 * 60 * 60 * 1000 );
        expires = "; expires=" + d.toGMTString();
    }

    document.cookie = sName + "=" + sValue + expires + "; path=/";
};

WebFXTabPane.getCookie = function (sName) {
    var re = new RegExp( "(\;|^)[^;]*(" + sName + ")\=([^;]*)(;|$)" );
    var res = re.exec( document.cookie );
    return res != null ? res[3] : null;
};

WebFXTabPane.removeCookie = function ( name ) {
    setCookie( name, "", -1 );
};








///////////////////////////////////////////////////////////////////////////////////
// The constructor for tab pages. This one should not be used.
// Use WebFXTabPage.addTabPage instead
//
// el : HTMLElement         The html element used to represent the tab pane
// tabPane : WebFXTabPane   The parent tab pane
// nindex : Number          The index of the page in the parent pane page array
//
function WebFXTabPage( el, tabPane, nIndex ) {
    if ( !hasSupport() || el == null ) return;
    
    this.element = el;
    this.element.tabPage = this;
    this.index = nIndex;
    
    var cs = el.childNodes;
    for (var i = 0; i < cs.length; i++) {
        if (cs[i].nodeType == 1 && (cs[i].className == "tab-bleu" || cs[i].className == "tab-rose" || cs[i].className == "tab-jaune" || cs[i].className == "tab-rouge" )) {
            this.tab = cs[i];
            break;
        }
    }
    
    // insert a tag around content to support keyboard navigation
    var a = document.createElement( "A" );
    a.href = "javascript:void 0;";
    while ( this.tab.hasChildNodes() )
        a.appendChild( this.tab.firstChild );
    this.tab.appendChild( a );
    
    // hook up events, using DOM0
    var oThis = this;
    this.tab.onclick = function () { oThis.select(); };
    this.tab.onmouseover = function () { WebFXTabPage.tabOver( oThis ); };
    this.tab.onmouseout = function () { WebFXTabPage.tabOut( oThis ); };
}

WebFXTabPage.prototype = {
    show:   function () {
        var el = this.tab;
        var s = el.className + " selected";
        s = s.replace(/ +/g, " ");
        el.className = s;
        
        this.element.style.display = "block";
    },

    hide:   function () {
        var el = this.tab;
        var s = el.className;
        s = s.replace(/ selected/g, "");
        el.className = s;

        this.element.style.display = "none";
    },
    
    select: function () {
        this.tabPane.setSelectedIndex( this.index );
    }
};

WebFXTabPage.tabOver = function ( tabpage ) {
    var el = tabpage.tab;
    var s = el.className + " hover";
    s = s.replace(/ +/g, " ");
    el.className = s;
};

WebFXTabPage.tabOut = function ( tabpage ) {
    var el = tabpage.tab;
    var s = el.className;
    s = s.replace(/ hover/g, "");
    el.className = s;
};


// This function initializes all uninitialized tab panes and tab pages
function setupAllTabs() {
    if ( !hasSupport() ) return;

    var all = document.getElementsByTagName( "*" );
    var l = all.length;
    var tabPaneRe = /tab\-pane/;
    var tabPageRe = /tab\-page/;
    var cn, el;
    var parentTabPane;
    
    for ( var i = 0; i < l; i++ ) {
        el = all[i]
        cn = el.className;

        // no className
        if ( cn == "" ) continue;
        
        // uninitiated tab pane
        if ( tabPaneRe.test( cn ) && !el.tabPane )
            new WebFXTabPane( el );
    
        // unitiated tab page wit a valid tab pane parent
        else if ( tabPageRe.test( cn ) && !el.tabPage &&
                    tabPaneRe.test( el.parentNode.className ) ) {
            el.parentNode.tabPane.addTabPage( el );         
        }
    }
}


// initialization hook up

// DOM2
if ( typeof window.addEventListener != "undefined" )
    window.addEventListener( "load", setupAllTabs, false );

// IE 
else if ( typeof window.attachEvent != "undefined" )
    window.attachEvent( "onload", setupAllTabs );

else {
    if ( window.onload != null ) {
        var oldOnload = window.onload;
        window.onload = function ( e ) {
            oldOnload( e );
            setupAllTabs();
        };
    }
    else 
        window.onload = setupAllTabs;
}