// Title: tigra menu

// Description: See the demo at url

// URL: http://www.softcomplex.com/products/tigra_menu/

// Version: 2.0 (commented source)

// Date: 04-05-2003 (mm-dd-yyyy)

// Contact: feedback@softcomplex.com (specify product title in the subject)

// Tech. Support: http://www.softcomplex.com/forum/forumdisplay.php?fid=40

// Notes: This script is free. Visit official site for further details.



// --------------------------------------------------------------------------------

// global collection containing all menus on current page

var A_MENUS = [];



// --------------------------------------------------------------------------------

// menu class

function menu (a_items, a_tpl) {



  // browser check

  if (!document.body || !document.body.style)

    return;



  // store items structure

  this.a_config = a_items;



  // store template structure

  this.a_tpl = a_tpl;



  // get menu id

  this.n_id = A_MENUS.length;



  // declare collections

  this.a_index = [];

  this.a_children = [];



  // assigh methods and event handlers

  this.expand      = menu_expand;

  this.collapse    = menu_collapse;



  this.onclick     = menu_onclick;

  this.onmouseout  = menu_onmouseout;

  this.onmouseover = menu_onmouseover;

  this.onmousedown = menu_onmousedown;



  // default level scope description structure

  this.a_tpl_def = {

    'block_top'  : 16,

    'block_left' : 16,

    'top'        : 20,

    'left'       : 4,

    'width'      : 50,

    'height'     : 22,

    'hide_delay' : 0,

    'expd_delay' : 0,

    'css'        : {

      'inner' : '',

      'outer' : ''

    }

  };



  // assign methods and properties required to imulate parent item

  this.getprop = function (s_key) {

    return this.a_tpl_def[s_key];

  };



  this.o_root = this;

  this.n_depth = -1;

  this.n_x = 0;

  this.n_y = 0;



  //   init items recursively

  for (n_order = 0; n_order < a_items.length; n_order++)

    new menu_item(this, n_order);



  // register self in global collection

  A_MENUS[this.n_id] = this;



  // make root level visible

  for (var n_order = 0; n_order < this.a_children.length; n_order++)

    this.a_children[n_order].e_oelement.style.visibility = 'visible';

}



// --------------------------------------------------------------------------------

function menu_collapse (n_id) {

  // cancel item open delay

  clearTimeout(this.o_showtimer);



  // by default collapse to root level

  var n_tolevel = (n_id ? this.a_index[n_id].n_depth : 0);



  // hide all items over the level specified

  for (n_id = 0; n_id < this.a_index.length; n_id++) {

    var o_curritem = this.a_index[n_id];

    if (o_curritem.n_depth > n_tolevel && o_curritem.b_visible) {

      o_curritem.e_oelement.style.visibility = 'hidden';

      o_curritem.b_visible = false;

    }

  }



  // reset current item if mouse has gone out of items

  if (!n_id)

    this.o_current = null;

}



// --------------------------------------------------------------------------------

function menu_expand (n_id) {



  // expand only when mouse is over some menu item

  if (this.o_hidetimer)

    return;



  // lookup current item

  var o_item = this.a_index[n_id];



  // close previously opened items

  if (this.o_current && this.o_current.n_depth >= o_item.n_depth)

    this.collapse(o_item.n_id);

  this.o_current = o_item;



  // exit if there are no children to open

  if (!o_item.a_children)

    return;



  // show direct child items

  for (var n_order = 0; n_order < o_item.a_children.length; n_order++) {

    var o_curritem = o_item.a_children[n_order];

    o_curritem.e_oelement.style.visibility = 'visible';

    o_curritem.b_visible = true;

  }

}



// --------------------------------------------------------------------------------

//

// --------------------------------------------------------------------------------

function menu_onclick (n_id) {

  // don't go anywhere if item has no link defined

  return Boolean(this.a_index[n_id].a_config[1]);

}



// --------------------------------------------------------------------------------

function menu_onmouseout (n_id) {



  // lookup new item's object

  var o_item = this.a_index[n_id];



  // apply rollout

  o_item.e_oelement.className = o_item.getstyle(0, 0);

  o_item.e_ielement.className = o_item.getstyle(1, 0);



  // update status line

  o_item.upstatus(7);



  // run mouseover timer

  this.o_hidetimer = setTimeout('A_MENUS['+ this.n_id +'].collapse();',

    o_item.getprop('hide_delay'));

}



// --------------------------------------------------------------------------------

function menu_onmouseover (n_id) {



  // cancel mouseoute menu close and item open delay

  clearTimeout(this.o_hidetimer);

  this.o_hidetimer = null;

  clearTimeout(this.o_showtimer);



  // lookup new item's object

  var o_item = this.a_index[n_id];



  // update status line

  o_item.upstatus();



  // apply rollover

  o_item.e_oelement.className = o_item.getstyle(0, 1);

  o_item.e_ielement.className = o_item.getstyle(1, 1);



  // if onclick open is set then no more actions required

  if (o_item.getprop('expd_delay') < 0)

    return;



  // run expand timer

  this.o_showtimer = setTimeout('A_MENUS['+ this.n_id +'].expand(' + n_id + ');',

    o_item.getprop('expd_delay'));



}



// --------------------------------------------------------------------------------

// called when mouse button is pressed on menu item

// --------------------------------------------------------------------------------

function menu_onmousedown (n_id) {



  // lookup new item's object

  var o_item = this.a_index[n_id];



  // apply mouse down style

  o_item.e_oelement.className = o_item.getstyle(0, 2);

  o_item.e_ielement.className = o_item.getstyle(1, 2);



  this.expand(n_id);

//  this.items[id].switch_style('onmousedown');

}





// --------------------------------------------------------------------------------

// menu item Class

function menu_item (o_parent, n_order) {



  // store parameters passed to the constructor

  this.n_depth  = o_parent.n_depth + 1;

  this.a_config = o_parent.a_config[n_order + (this.n_depth ? 3 : 0)];



  // return if required parameters are missing

  if (!this.a_config) return;



  // store info from parent item

  this.o_root    = o_parent.o_root;

  this.o_parent  = o_parent;

  this.n_order   = n_order;



  // register in global and parent's collections

  this.n_id = this.o_root.a_index.length;

  this.o_root.a_index[this.n_id] = this;

  o_parent.a_children[n_order] = this;



  // calculate item's coordinates

  var o_root = this.o_root,

    a_tpl  = this.o_root.a_tpl;



  // assign methods

  this.getprop  = mitem_getprop;

  this.getstyle = mitem_getstyle;

  this.upstatus = mitem_upstatus;



  this.n_x = n_order

    ? o_parent.a_children[n_order - 1].n_x + this.getprop('left')

    : o_parent.n_x + this.getprop('block_left');



  this.n_y = n_order

    ? o_parent.a_children[n_order - 1].n_y-1 + this.getprop('top')

    : o_parent.n_y + this.getprop('block_top');



  // generate item's HMTL

  document.write (

    '<a id="e' + o_root.n_id + '_'

      + this.n_id +'o" class="' + this.getstyle(0, 0) + '" href="' + this.a_config[1] + '"'

      + (this.a_config[2] && this.a_config[2]['tw'] ? ' target="'

      + this.a_config[2]['tw'] + '"' : '') + ' style="position: absolute; top: '

      + this.n_y + 'px; left: ' + this.n_x + 'px; width: '

      + this.getprop('width') + 'px; height: '

      + this.getprop('height') + 'px; visibility: hidden;'

      +' z-index: ' + 200 + ';" '

      + 'onclick="return A_MENUS[' + o_root.n_id + '].onclick('

      + this.n_id + ');" onmouseout="A_MENUS[' + o_root.n_id + '].onmouseout('

      + this.n_id + ');" onmouseover="A_MENUS[' + o_root.n_id + '].onmouseover('

      + this.n_id + ');" onmousedown="A_MENUS[' + o_root.n_id + '].onmousedown('

      + this.n_id + ');"><div  id="e' + o_root.n_id + '_'

      + this.n_id +'i" class="' + this.getstyle(1, 0) + '">'

      + this.a_config[0] + "</div></a>\n"

    );

  this.e_ielement = document.getElementById('e' + o_root.n_id + '_' + this.n_id + 'i');

  this.e_oelement = document.getElementById('e' + o_root.n_id + '_' + this.n_id + 'o');



  this.b_visible = !this.n_depth;



  // no more initialization if leaf

  if (this.a_config.length < 4)

    return;



  // node specific methods and properties

  this.a_children = [];



  // init downline recursively

  for (var n_order = 0; n_order < this.a_config.length - 3; n_order++)

    new menu_item(this, n_order);

}



// --------------------------------------------------------------------------------

// reads property from template file, inherits from parent level if not found

// ------------------------------------------------------------------------------------------

function mitem_getprop (s_key) {



  // check if value is defined for current level

  var s_value = null,

    a_level = this.o_root.a_tpl[this.n_depth];



  // return value if explicitly defined

  if (a_level)

    s_value = a_level[s_key];



  // request recursively from parent levels if not defined

  return (s_value == null ? this.o_parent.getprop(s_key) : s_value);

}

// --------------------------------------------------------------------------------

// reads property from template file, inherits from parent level if not found

// ------------------------------------------------------------------------------------------

function mitem_getstyle (n_pos, n_state) {



  var a_css = this.getprop('css');

  var a_oclass = a_css[n_pos ? 'inner' : 'outer'];



  // same class for all states

  if (typeof(a_oclass) == 'string')

    return a_oclass;



  // inherit class from previous state if not explicitly defined

  for (var n_currst = n_state; n_currst >= 0; n_currst--)

    if (a_oclass[n_currst])

      return a_oclass[n_currst];

}



// ------------------------------------------------------------------------------------------

// updates status bar message of the browser

// ------------------------------------------------------------------------------------------

function mitem_upstatus (b_clear) {

  window.setTimeout("window.status=unescape('" + (b_clear

    ? ''

    : (this.a_config[2] && this.a_config[2]['sb']

      ? escape(this.a_config[2]['sb'])

      : escape(this.a_config[0]) + (this.a_config[1]

        ? ' ('+ escape(this.a_config[1]) + ')'

        : ''))) + "')", 10);

}



// --------------------------------------------------------------------------------

// that's all folks