source: companies/serpro/jabberit_messenger/js/show_hidden.js @ 903

(function()
{
        var _delay;

        var _last_displayed;
        var _timeout = false;

        var _event_show = false;
        var _event_hidden = false;

        function _config(pObj, pEvent, pHandler)
        {
                if ( typeof pObj == 'object' )
                {
                        if ( pEvent.substring(0, 2) == 'on' )
                                pEvent = pEvent.substring(2, pEvent.length);

                        if ( pObj.addEventListener )
                                pObj.addEventListener(pEvent, pHandler, false);
                        else if ( pObj.attachEvent )
                                pObj.attachEvent('on' + pEvent, pHandler);
                }
        }

        function _hidden()
        {
                _show(_last_displayed);
        }

        function _wait(e)
        {
                var el = ( e.target ) ? e.target : e.srcElement;
                if ( e.type.indexOf('mouseover') != -1 )
                        clearTimeout(_timeout);
                else
                        _timeout = setTimeout(_hidden, _delay);
        }

        function _show(_element)
        {
                if ( _last_displayed )
                        _last_displayed.style.display = 'none';

                if ( _timeout )
                        clearTimeout(_timeout);

                if ( _element != _last_displayed )
                {
                        _last_displayed = _element;
                        _element.style.display = 'block';
                        _config(_element,_event_show,_wait);
                        _config(_element,_event_hidden,_wait);
                }
                else
                        _last_displayed = false;
        }

        function _view()
        {
                if ( arguments.length == 3 )
                {
                        var _event = [
                                'onclick',
                                'onmousedown',
                                'onmouseout',
                                'onmouseover',
                                'onmouseup'
                        ];

                        _event_show = false;
                        _event_hidden = false;

                        for ( var i in _event )
                        {
                                if ( _event[i] == arguments[0] )
                                        _event_show = arguments[0];

                                if ( _event[i] == arguments[1] )
                                        _event_hidden = arguments[1];
                        }

                        if ( _event_show && _event_hidden )
                        {
                                var _element = false;
                                switch ( typeof arguments[2] )
                                {
                                        case 'object' :
                                                _element = arguments[2];
                                        break;
                                        case 'string' :
                                                _element = document.getElementById(arguments[2]);
                                        break;
                                }

                                if ( _element )
                                {
                                        _show(_element);
                                        _timeout = setTimeout(_hidden, _delay);
                                }
                        }
                }
        }

        function ShowHidden()
        {
                _delay = ( (arguments.length > 0) && !isNaN(arguments[0]) ) ? arguments[0] : 3000;
        }

        ShowHidden.prototype.action  = _view;
    window.ShowHidden = ShowHidden;
}
)();