// 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' : 120, '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 + this.getprop('top') : o_parent.n_y + this.getprop('block_top'); // generate item's HMTL document.write ( '\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