path: root/frontends/php/js/menu.js

/*
** ZABBIX
** Copyright (C) 2000-2005 SIA Zabbix
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
**/

// 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)
// Tech. Support: http://www.softcomplex.com/forum/forumdisplay.php?fid=40
// Notes: This script is free. Visit official site for further details.
//        This script adapted by Eugene Grigorjev for using as popup menu
//        of ZABBIX software. See http://www.zabbix.com.

function show_popup_menu(e, content, width)
{
	if(!width) width = 170;

	var pos = [
		{'block_top': -12, 'block_left': -5, 'width': width},
		{'block_top': 5, 'block_left': width-5, 'width': width}
	];

	var cursor = get_cursor_position(e);

	new popup_menu (content, pos, cursor.x, cursor.y);
}

// --------------------------------------------------------------------------------
// global collection containing all menus on current page
var A_MENUS = [];

// --------------------------------------------------------------------------------
// menu class
function popup_menu (a_items, a_tpl, x, y) {

	// browser check
	if (!document.body || !document.body.style)
		return;

	this.n_scroll_left = get_scroll_pos()[0];
	this.n_scroll_top = get_scroll_pos()[1];

	if(document.body.clientWidth)
	{
		this.n_scr_width = document.body.clientWidth;
		this.n_scr_height = document.body.clientHeight;
	}
	else
	{
		this.n_scr_width = document.width;
		this.n_scr_height = document.height;
	}

	// 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;

	this.getstyle = mitem_getstyle;

	this.set_x_direction = mitem_set_x_direction;
	this.get_x_direction = mitem_get_x_direction;
	this.set_y_direction = mitem_set_y_direction;
	this.get_y_direction = mitem_get_y_direction;

	// default level scope description structure 
	this.a_tpl_def = {
		'block_top'  : 0,
		'block_left' : 0,
		'top'        : 23,
		'left'       : 0,
		'width'      : 170,
		'height'     : 24,
		'hide_delay' : 200,
		'expd_delay' : 200
	};

	/* default css */
	this.a_css_def = {
		'outer' : ['pum_o_item'],
		'inner' : ['pum_i_item']
	};

	
	// 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 = x;
	this.n_y = y;

	// 	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 mitem_set_x_direction(n_val) {
	this.n_x_direction = n_val;
}

function mitem_get_x_direction() {
	return (this.n_x_direction ? this.n_x_direction : null);
}

function mitem_set_y_direction(n_val) {
	this.n_y_direction = n_val;
}

function mitem_get_y_direction() {
	return (this.n_y_direction ? this.n_y_direction : null);
}

// --------------------------------------------------------------------------------
function menu_collapse (n_id) {
	// cancel item open delay
	clearTimeout(this.o_showtimer);

	// by default collapse all levels
	var n_tolevel = (n_id ? this.a_index[n_id].n_depth : -1);
	
	if(-1 == n_tolevel)
	{
		for (n_id = 0; n_id < this.a_index.length; n_id++)
		{
			var o_curritem = this.a_index[n_id];
			if(o_curritem)
			{
				var e_oelement = document.getElementById(o_curritem.e_oelement.id);
				document.body.removeChild(e_oelement);
			}
		}
		A_MENUS.splice(this.o_root.n_id);
	}
	else
	{
		// 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 && 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
	if(Boolean(this.a_index[n_id].a_config[1]))
	{
		this.collapse(0);
		return true;
	}
	return false;
}

// --------------------------------------------------------------------------------
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;

	var item_offset = this.n_depth ? 4 : 0;
	this.a_config = o_parent.a_config[n_order + item_offset];

	// return if required parameters are missing
	if (!this.a_config || !this.a_config[0]) 
	{
		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 + 1;
	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;
	
	this.a_css = this.a_config[3] ? this.a_config[3] : null;

	// assign methods
	this.getprop  = mitem_getprop;
	this.getstyle = mitem_getstyle;
	this.upstatus = mitem_upstatus;

	this.set_x_direction = mitem_set_x_direction;
	this.get_x_direction = mitem_get_x_direction;
	this.set_y_direction = mitem_set_y_direction;
	this.get_y_direction = mitem_get_y_direction;

	if(!o_parent.n_x_direction && !n_order)
	{
		// calculate menu direction in first element
		o_parent.set_x_direction(
			(this.getprop('width') + o_parent.n_x + this.getprop('block_left') 
				> o_root.n_scr_width + o_root.n_scroll_left)
			? -1 : 1
			);
	}

	this.n_x = n_order
		? o_parent.a_children[n_order - 1].n_x + this.getprop('left') * o_parent.get_x_direction()
		: o_parent.n_x + this.getprop('block_left') * o_parent.get_x_direction();

	if(-1 ==  o_parent.get_x_direction() && o_parent == o_root && !n_order)
	{
		this.n_x -= this.getprop('width');
	}

	if(!o_parent.n_y_direction && !n_order)
	{
		//alert("w: " +this.getprop('height') +" i:" + (o_parent.a_config.length - item_offset) );
		// calculate menu direction in first element
		o_parent.set_y_direction(
			(this.getprop('height') * (o_parent.a_config.length - item_offset) + o_parent.n_y + this.getprop('block_top') 
				> o_root.n_scr_height + o_root.n_scroll_top)
			? -1 : 1
			);
	}

	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') * (o_parent == o_root ? o_parent.get_y_direction() : 1);

	if(-1 == o_parent.get_y_direction() && !n_order)
	{
		this.n_y -= this.getprop('height') * (o_parent.a_config.length - item_offset);
	}

	// generate item's HMTL
	var el = document.createElement("a");
	el.setAttribute('id', 'e' + o_root.n_id + '_' + this.n_id + 'o');
	el.setAttribute('href', this.a_config[1]);

	if(this.a_config[2] && this.a_config[2]['tw'])
		el.setAttribute('target', this.a_config[2]['tw']);

	el.className = this.getstyle(0, 0);
	el.style.position = 'absolute';
	el.style.top = this.n_y + 'px';
	el.style.left = this.n_x + 'px';
	el.style.width = this.getprop('width') + 'px';
	el.style.height = this.getprop('height') + 'px';
	el.style.visibility = 'hidden';
	el.style.zIndex = this.n_depth;

	el.o_root_n_id = o_root.n_id;
	el.this_n_id = this.n_id;

	el.onclick = A_MENUS_onclick;
	el.onmouseout = A_MENUS_onmouseout;
	el.onmouseover = A_MENUS_onmouseover;
	el.onmousedown = A_MENUS_onmousedown;

	el.innerHTML = '<div  id="e' + o_root.n_id + '_' + this.n_id +'i" class="' + this.getstyle(1, 0) + '">' + this.a_config[0] + '</div>';

	document.body.appendChild(el);

	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 < item_offset)
		return;

	// node specific methods and properties
	this.a_children = [];

	// init downline recursively
	for (var n_order = 0; n_order < this.a_config.length - item_offset; n_order++)
		new menu_item(this, n_order);
}

function A_MENUS_onclick(){	return A_MENUS[this.o_root_n_id].onclick(this.this_n_id); }
function A_MENUS_onmouseout(){	return A_MENUS[this.o_root_n_id].onmouseout(this.this_n_id); }
function A_MENUS_onmouseover(){	return A_MENUS[this.o_root_n_id].onmouseover(this.this_n_id); }
function A_MENUS_onmousedown(){	return A_MENUS[this.o_root_n_id].onmousedown(this.this_n_id); }

// --------------------------------------------------------------------------------
// 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.a_css;

	// request recursively from parent levels if not defined
	if(!a_css)
		a_css = this.o_root.a_css_def;
	
	//var a_css = this.o_root.a_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