// +-----------------------------------------------------------------------+
// | Copyright (c) 2002-2005, Richard Heyes, Harald Radi                   |
// | All rights reserved.                                                  |
// |                                                                       |
// | Redistribution and use in source and binary forms, with or without    |
// | modification, are permitted provided that the following conditions    |
// | are met:                                                              |
// |                                                                       |
// | o Redistributions of source code must retain the above copyright      |
// |   notice, this list of conditions and the following disclaimer.       |
// | o Redistributions in binary form must reproduce the above copyright   |
// |   notice, this list of conditions and the following disclaimer in the |
// |   documentation and/or other materials provided with the distribution.|
// | o The names of the authors may not be used to endorse or promote      |
// |   products derived from this software without specific prior written  |
// |   permission.                                                         |
// |                                                                       |
// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS   |
// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT     |
// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
// | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT  |
// | OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
// | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT      |
// | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
// | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
// | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT   |
// | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
// | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  |
// |                                                                       |
// +-----------------------------------------------------------------------+
// | Author: Richard Heyes <richard@phpguru.org>                           |
// |         Harald Radi <harald.radi@nme.at>                              |
// +-----------------------------------------------------------------------+
//
// $Id: TreeMenu.js,v 1.22 2006/12/14 12:07:34 cweiske Exp $

// Modified 20.04.2013 by Klemen (www.hesk.com)

/**
* Function to create copies of objects which are
* normally passed around by references (Arrays for example)
*/
function arrayCopy(input)
{
        var output = new Array(input.length);

        for (i in input) {
                if (typeof(input[i]) == 'array') {
                        output[i] = arrayCopy(input[i]);
                } else {
                        output[i] = input[i];
                }
        }

        return output;
}

/**
* TreeMenu class
*/
        function TreeMenu(iconpath, myname, linkTarget, defaultClass, usePersistence, noTopLevelImages)
        {
                // Properties
                this.iconpath         = iconpath;
                this.myname           = myname;
                this.linkTarget       = linkTarget;
                this.defaultClass     = defaultClass;
                this.usePersistence   = usePersistence;
                this.noTopLevelImages = noTopLevelImages;
                this.n                = new Array();
                this.output           = '';

                this.nodeRefs       = new Array();
                this.branches       = new Array();
                this.branchStatus   = new Array();
                this.layerRelations = new Array();
                this.childParents   = new Array();
                this.cookieStatuses = new Array();

                this.preloadImages();
        }

/**
* Adds a node to the tree
*/
        TreeMenu.prototype.addItem = function (newNode)
        {
                newIndex = this.n.length;
                this.n[newIndex] = newNode;

                return this.n[newIndex];
        }

/**
* Preload images hack for Mozilla
*/
        TreeMenu.prototype.preloadImages = function ()
        {
                var plustop    = new Image; plustop.src    = this.iconpath + '/plustop.gif';
                var plusbottom = new Image; plusbottom.src = this.iconpath + '/plusbottom.gif';
                var plus       = new Image; plus.src       = this.iconpath + '/plus.gif';

                var minustop    = new Image; minustop.src    = this.iconpath + '/minustop.gif';
                var minusbottom = new Image; minusbottom.src = this.iconpath + '/minusbottom.gif';
                var minus       = new Image; minus.src       = this.iconpath + '/minus.gif';

                var branchtop    = new Image; branchtop.src    = this.iconpath + '/branchtop.gif';
                var branchbottom = new Image; branchbottom.src = this.iconpath + '/branchbottom.gif';
                var branch       = new Image; branch.src       = this.iconpath + '/branch.gif';

                var linebottom = new Image; linebottom.src = this.iconpath + '/linebottom.gif';
                var line       = new Image; line.src       = this.iconpath + '/line.gif';
        }

/**
* Main function that draws the menu and assigns it
* to the layer (or document.write()s it)
*/
        TreeMenu.prototype.drawMenu = function ()// OPTIONAL ARGS: nodes = [], level = [], prepend = '', expanded = false, visbility = 'inline', parentLayerID = null
        {
                /**
            * Necessary variables
            */
                var output        = '';
                var modifier      = '';
                var layerID       = '';
                var parentLayerID = '';

                /**
            * Parse any optional arguments
            */
                var nodes         = arguments[0] ? arguments[0] : this.n
                var level         = arguments[1] ? arguments[1] : [];
                var prepend       = arguments[2] ? arguments[2] : '';
                var expanded      = arguments[3] ? arguments[3] : false;
                var visibility    = arguments[4] ? arguments[4] : 'inline';
                var parentLayerID = arguments[5] ? arguments[5] : null;

                var currentlevel  = level.length;

                for (var i=0; i<nodes.length; i++) {

                        level[currentlevel] = i+1;
                        layerID = this.myname + '_' + 'node_' + this.implode('_', level);

                        /**
            * Store this object in the nodeRefs array
            */
                        this.nodeRefs[layerID] = nodes[i];

                        /**
                * Store the child/parent relationship
                */
                        this.childParents[layerID] = parentLayerID;

                        /**
                * Gif modifier
                */
                        if (i == 0 && parentLayerID == null) {
                                modifier = nodes.length > 1 ? "top" : 'single';
                        } else if(i == (nodes.length-1)) {
                                modifier = "bottom";
                        } else {
                                modifier = "";
                        }

                        /**
                * Single root branch is always expanded
                */
                        if (!this.doesMenu() || (parentLayerID == null && (nodes.length == 1 || this.noTopLevelImages))) {
                                expanded = true;

                        } else if (nodes[i].expanded) {
                                expanded = true;

                        } else {
                                expanded = false;
                        }

                        /**
                * Make sure visibility is correct based on parent status
                */
                        visibility =  this.checkParentVisibility(layerID) ? visibility : 'none';

                        /**
                * Setup branch status and build an indexed array
                        * of branch layer ids
                */
                        if (nodes[i].n.length > 0) {
                                this.branchStatus[layerID] = expanded;
                                this.branches[this.branches.length] = layerID;
                        }

                        /**
                * Setup toggle relationship
                */
                        if (!this.layerRelations[parentLayerID]) {
                                this.layerRelations[parentLayerID] = new Array();
                        }
                        this.layerRelations[parentLayerID][this.layerRelations[parentLayerID].length] = layerID;

                        /**
                * Branch images
                */
                        var gifname  = nodes[i].n.length && this.doesMenu() && nodes[i].isDynamic ? (expanded ? 'minus' : 'plus') : 'branch';
                        var iconName = expanded && nodes[i].expandedIcon ? nodes[i].expandedIcon : nodes[i].icon;
                        var iconimg  = nodes[i].icon ? this.stringFormat('<img src="{0}/{1}" align="top" id="icon_{2}">', this.iconpath, iconName, layerID) : '';

                        /**
                        * Add event handlers
                        */
                        var eventHandlers = "";
                        for (j in nodes[i].events) {
                                eventHandlers += this.stringFormat('{0}="{1}" ', j, nodes[i].events[j]);
                        }

                        /**
                * Build the html to write to the document
                        * IMPORTANT:
                        * document.write()ing the string: '<div style="display:...' will screw up nn4.x
                */
                        var layerTag  = this.doesMenu() ? this.stringFormat('<div id="{0}" style="display: {1}" class="{2}">', layerID, visibility, (nodes[i].cssClass ? nodes[i].cssClass : this.defaultClass)) : this.stringFormat('<div class="{0}">', nodes[i].cssClass ? nodes[i].cssClass : this.defaultClass);
                        var onMDown   = this.doesMenu() && nodes[i].n.length  && nodes[i].isDynamic ? this.stringFormat('onmousedown="{0}.toggleBranch(\'{1}\', true)" style="cursor: pointer; cursor: hand"', this.myname, layerID) : '';
                        var imgTag    = this.stringFormat('<img src="{0}/{1}{2}.gif" align="top" border="0" name="img_{3}" {4}>', this.iconpath, gifname, modifier, layerID, onMDown);
                        var linkTarget= nodes[i].linkTarget ? nodes[i].linkTarget : this.linkTarget;
                        var linkStart = nodes[i].link ? this.stringFormat('<a href="{0}" target="{1}">', nodes[i].link, linkTarget) : '';

                        var linkEnd   = nodes[i].link ? '</a>' : '';

                        this.output += this.stringFormat('{0}<nobr>{1}{2}{3}{4}{5}<span {5}>{6}</span>{7}</nobr><br /></div>',
                                          layerTag,
                                                          nodes[i].menu_icons,
														  prepend,
                                          parentLayerID == null && (nodes.length == 1 || this.noTopLevelImages) ? '' : imgTag,
                                                          iconimg,
                                                          linkStart,
                                                          eventHandlers,
                                                          nodes[i].title,
                                                          linkEnd);

                /**
                * Traverse sub nodes ?
                */
                        if (nodes[i].n.length) {
                        /**
						* Determine what to prepend. If there is only one root
                        * node then the prepend to pass to children is nothing.
                        * Otherwise it depends on where we are in the tree.
						*/
                                if (parentLayerID == null && (nodes.length == 1 || this.noTopLevelImages)) {
                                        var newPrepend = '';

                                } else if (i < (nodes.length - 1)) {
                                        var newPrepend = prepend + this.stringFormat('<img src="{0}/line.gif" align="top">', this.iconpath);

                                } else {
                                        var newPrepend = prepend + this.stringFormat('<img src="{0}/linebottom.gif" align="top">', this.iconpath);
                                }

                                this.drawMenu(nodes[i].n,
                                              arrayCopy(level),
                                              newPrepend,
                                              nodes[i].expanded,
                                              expanded ? 'inline' : 'none',
                                              layerID);
                        }
                }
        }

/**
* Writes the output generated by drawMenu() to the page
*/
        TreeMenu.prototype.writeOutput = function ()
        {
                document.write(this.output);
        }

/**
* Toggles a branches visible status. Called from resetBranches()
* and also when a +/- graphic is clicked.
*/
        TreeMenu.prototype.toggleBranch = function (layerID, updateStatus) // OPTIONAL ARGS: fireEvents = true
        {
                var currentDisplay = this.getLayer(layerID).style.display;
                var newDisplay     = (this.branchStatus[layerID] && currentDisplay == 'inline') ? 'none' : 'inline';
                var fireEvents     = arguments[2] != null ? arguments[2] : true;

                for (var i=0; i<this.layerRelations[layerID].length; i++) {

                        if (this.branchStatus[this.layerRelations[layerID][i]]) {
                                this.toggleBranch(this.layerRelations[layerID][i], false);
                        }

                        this.getLayer(this.layerRelations[layerID][i]).style.display = newDisplay;
                }

                if (updateStatus) {
                        this.branchStatus[layerID] = !this.branchStatus[layerID];

                        /**
                * Persistence
                */
                        if (this.doesPersistence() && !arguments[2] && this.usePersistence) {
                                this.setExpandedStatusForCookie(layerID, this.branchStatus[layerID]);
                        }

                        /**
                        * Fire custom events
                        */
                        if (fireEvents) {
                                nodeObject = this.nodeRefs[layerID];

                                if (nodeObject.ontoggle != null) {
                                        eval(nodeObject.ontoggle);
                                }

                                if (newDisplay == 'none' && nodeObject.oncollapse != null) {
                                        eval(nodeObject.oncollapse);
                                } else if (newDisplay == 'inline' && nodeObject.onexpand != null){
                                        eval(nodeObject.onexpand);
                                }
                        }

                        // Swap image
                        this.swapImage(layerID);
                }

                // Swap icon
                this.swapIcon(layerID);
        }

/**
* Swaps the plus/minus branch images
*/
        TreeMenu.prototype.swapImage = function (layerID)
        {
                var imgSrc = document.images['img_' + layerID].src;

                var re = /^(.*)(plus|minus)(bottom|top|single)?.gif$/
                if (matches = imgSrc.match(re)) {

                        document.images['img_' + layerID].src = this.stringFormat('{0}{1}{2}{3}',
                                                                        matches[1],
                                                                                                                        matches[2] == 'plus' ? 'minus' : 'plus',
                                                                                                                        matches[3] ? matches[3] : '',
                                                                                                                        '.gif');
                }
        }

/**
* Swaps the icon for the expanded icon if one
* has been supplied.
*/
        TreeMenu.prototype.swapIcon = function (layerID)
        {
                if (document.images['icon_' + layerID]) {
                        var imgSrc = document.images['icon_' + layerID].src;

                        if (this.nodeRefs[layerID].icon && this.nodeRefs[layerID].expandedIcon) {
                                var newSrc = (imgSrc.indexOf(this.nodeRefs[layerID].expandedIcon) == -1 ? this.nodeRefs[layerID].expandedIcon : this.nodeRefs[layerID].icon);

                                document.images['icon_' + layerID].src = this.iconpath + '/' + newSrc;
                        }
                }
        }

/**
* Can the browser handle the dynamic menu?
*/
        TreeMenu.prototype.doesMenu = function ()
        {
                return (is_ie4up || is_nav6up || is_gecko || is_opera7);
        }

/**
* Can the browser handle save the branch status
*/
        TreeMenu.prototype.doesPersistence = function ()
        {
                return (is_ie4up || is_gecko || is_nav6up || is_opera7);
        }

/**
* Returns the appropriate layer accessor
*/
        TreeMenu.prototype.getLayer = function (layerID)
        {
                if (is_ie4) {
                        return document.all(layerID);

                } else if (document.getElementById(layerID)) {
                        return document.getElementById(layerID);

                } else if (document.all && document.all(layerID)) {
                        return document.all(layerID);
                }
        }

/**
* Save the status of the layer
*/
        TreeMenu.prototype.setExpandedStatusForCookie = function (layerID, expanded)
        {
                this.cookieStatuses[layerID] = expanded;
                this.saveCookie();
        }

/**
* Load the status of the layer
*/
        TreeMenu.prototype.getExpandedStatusFromCookie = function (layerID)
        {
                if (this.cookieStatuses[layerID]) {
                        return this.cookieStatuses[layerID];
                }

                return false;
        }

/**
* Saves the cookie that holds which branches are expanded.
* Only saves the details of the branches which are expanded.
*/
        TreeMenu.prototype.saveCookie = function ()
        {
                var cookieString = new Array();

                for (var i in this.cookieStatuses) {
                        if (this.cookieStatuses[i] == true) {
                                cookieString[cookieString.length] = i;
                        }
                }

                document.cookie = 'TreeMenuBranchStatus=' + cookieString.join(':');
        }

/**
* Reads cookie parses it for status info and
* stores that info in the class member.
*/
        TreeMenu.prototype.loadCookie = function ()
        {
                var cookie = document.cookie.split('; ');

                for (var i=0; i < cookie.length; i++) {
                        var crumb = cookie[i].split('=');
                        if ('TreeMenuBranchStatus' == crumb[0] && crumb[1]) {
                                var expandedBranches = crumb[1].split(':');
                                for (var j=0; j<expandedBranches.length; j++) {
                                        this.cookieStatuses[expandedBranches[j]] = true;
                                }
                        }
                }
        }

/**
* Reset branch status
*/
        TreeMenu.prototype.resetBranches = function ()
        {
                if (!this.doesPersistence()) {
                        return false;
                }

                this.loadCookie();

                for (var i=0; i<this.branches.length; i++) {
                        var status = this.getExpandedStatusFromCookie(this.branches[i]);
                        // Only update if it's supposed to be expanded and it's not already
                        if (status == true && this.branchStatus[this.branches[i]] != true) {
                                if (this.checkParentVisibility(this.branches[i])) {
                                        this.toggleBranch(this.branches[i], true, false);
                                } else {
                                        this.branchStatus[this.branches[i]] = true;
                                        this.swapImage(this.branches[i]);
                                }
                        }
                }
        }

/**
* Checks whether a branch should be open
* or not based on its parents' status
*/
        TreeMenu.prototype.checkParentVisibility = function (layerID)
        {
                if (this.in_array(this.childParents[layerID], this.branches)
                    && this.branchStatus[this.childParents[layerID]]
                        && this.checkParentVisibility(this.childParents[layerID]) ) {

                        return true;

                } else if (this.childParents[layerID] == null) {
                        return true;
                }

                return false;
        }

/**
* New C# style string formatter
*/
        TreeMenu.prototype.stringFormat = function (strInput)
        {
                var idx = 0;

                for (var i=1; i<arguments.length; i++) {
                        while ((idx = strInput.indexOf('{' + (i - 1) + '}', idx)) != -1) {
                                strInput = strInput.substring(0, idx) + arguments[i] + strInput.substr(idx + 3);
                        }
                }

                return strInput;
        }

/**
* Also much adored, the PHP implode() function
*/
        TreeMenu.prototype.implode = function (seperator, input)
        {
                var output = '';

                for (var i=0; i<input.length; i++) {
                        if (i == 0) {
                                output += input[i];
                        } else {
                                output += seperator + input[i];
                        }
                }

                return output;
        }

/**
* Aah, all the old favourites are coming out...
*/
        TreeMenu.prototype.in_array = function (item, arr)
        {
                for (var i=0; i<arr.length; i++) {
                        if (arr[i] == item) {
                                return true;
                        }
                }

                return false;
        }

/**
* TreeNode Class
*/
        function TreeNode(title, menu_icons, icon, link, expanded, isDynamic, cssClass, linkTarget, expandedIcon)
        {
                this.title        = title;
				this.menu_icons   = menu_icons;
                this.icon         = icon;
                this.expandedIcon = expandedIcon;
                this.link         = link;
                this.expanded     = expanded;
                this.isDynamic    = isDynamic;
                this.cssClass     = cssClass;
                this.linkTarget   = linkTarget;
                this.n            = new Array();
                this.events       = new Array();
                this.handlers     = null;
                this.oncollapse   = null;
                this.onexpand     = null;
                this.ontoggle     = null;
        }

/**
* Adds a node to an already existing node
*/
        TreeNode.prototype.addItem = function (newNode)
        {
                newIndex = this.n.length;
                this.n[newIndex] = newNode;

                return this.n[newIndex];
        }

/**
* Sets an event for this particular node
*/
        TreeNode.prototype.setEvent = function (eventName, eventHandler)
        {
                switch (eventName.toLowerCase()) {
                        case 'onexpand':
                                this.onexpand = eventHandler;
                                break;

                        case 'oncollapse':
                                this.oncollapse = eventHandler;
                                break;

                        case 'ontoggle':
                                this.ontoggle = eventHandler;
                                break;

                        default:
                                this.events[eventName] = eventHandler;
                }
        }

/**
* That's the end of the tree classes. What follows is
* the browser detection code.
*/


//<!--
// Ultimate client-side JavaScript client sniff. Version 3.03
// (C) Netscape Communications 1999-2001.  Permission granted to reuse and distribute.
// Revised 17 May 99 to add is_nav5up and is_ie5up (see below).
// Revised 20 Dec 00 to add is_gecko and change is_nav5up to is_nav6up
//                      also added support for IE5.5 Opera4&5 HotJava3 AOLTV
// Revised 22 Feb 01 to correct Javascript Detection for IE 5.x, Opera 4,
//                      correct Opera 5 detection
//                      add support for winME and win2k
//                      synch with browser-type-oo.js
// Revised 26 Mar 01 to correct Opera detection
// Revised 02 Oct 01 to add IE6 detection

// Everything you always wanted to know about your JavaScript client
// but were afraid to ask. Creates "is_" variables indicating:
// (1) browser vendor:
//     is_nav, is_ie, is_opera, is_hotjava, is_webtv, is_TVNavigator, is_AOLTV
// (2) browser version number:
//     is_major (integer indicating major version number: 2, 3, 4 ...)
//     is_minor (float   indicating full  version number: 2.02, 3.01, 4.04 ...)
// (3) browser vendor AND major version number
//     is_nav2, is_nav3, is_nav4, is_nav4up, is_nav6, is_nav6up, is_gecko, is_ie3,
//     is_ie4, is_ie4up, is_ie5, is_ie5up, is_ie5_5, is_ie5_5up, is_ie6, is_ie6up, is_hotjava3, is_hotjava3up,
//     is_opera2, is_opera3, is_opera4, is_opera5, is_opera5up
// (4) JavaScript version number:
//     is_js (float indicating full JavaScript version number: 1, 1.1, 1.2 ...)
// (5) OS platform and version:
//     is_win, is_win16, is_win32, is_win31, is_win95, is_winnt, is_win98, is_winme, is_win2k
//     is_os2
//     is_mac, is_mac68k, is_macppc
//     is_unix
//     is_sun, is_sun4, is_sun5, is_suni86
//     is_irix, is_irix5, is_irix6
//     is_hpux, is_hpux9, is_hpux10
//     is_aix, is_aix1, is_aix2, is_aix3, is_aix4
//     is_linux, is_sco, is_unixware, is_mpras, is_reliant
//     is_dec, is_sinix, is_freebsd, is_bsd
//     is_vms
//
// See http://www.it97.de/JavaScript/JS_tutorial/bstat/navobj.html and
// http://www.it97.de/JavaScript/JS_tutorial/bstat/Browseraol.html
// for detailed lists of userAgent strings.
//
// Note: you don't want your Nav4 or IE4 code to "turn off" or
// stop working when new versions of browsers are released, so
// in conditional code forks, use is_ie5up ("IE 5.0 or greater")
// is_opera5up ("Opera 5.0 or greater") instead of is_ie5 or is_opera5
// to check version in code which you want to work on future
// versions.

/**
* Severly curtailed all this as only certain elements
* are required by TreeMenu, specifically:
*  o is_ie4up
*  o is_nav6up
*  o is_gecko
*/

    // convert all characters to lowercase to simplify testing
    var agt=navigator.userAgent.toLowerCase();

    // *** BROWSER VERSION ***
    // Note: On IE5, these return 4, so use is_ie5up to detect IE5.
    var is_major = parseInt(navigator.appVersion);
    var is_minor = parseFloat(navigator.appVersion);

    // Note: Opera and WebTV spoof Navigator.  We do strict client detection.
    // If you want to allow spoofing, take out the tests for opera and webtv.
    var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
                && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
                && (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1));
    var is_nav6up = (is_nav && (is_major >= 5));
    var is_gecko = (agt.indexOf('gecko') != -1);


    var is_ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
    var is_ie4    = (is_ie && (is_major == 4) && (agt.indexOf("msie 4")!=-1) );
    var is_ie4up  = (is_ie && (is_major >= 4));

        var is_opera  = (agt.indexOf("opera") != -1);
        var is_opera7 = (is_opera && is_major >= 7) || agt.indexOf("opera 7") != -1;

        // Patch from Harald Fielker
    if (agt.indexOf('konqueror') != -1) {
        var is_nav    = false;
        var is_nav6up = false;
        var is_gecko  = false;
        var is_ie     = true;
        var is_ie4    = true;
        var is_ie4up  = true;
    }
//--> end hide JavaScript