/* $Id: sentel.js 14 2007-07-13 22:18:40Z zapotek $ */
/* __________________________________________________________________ */

/**
 * Here we keep general data that we want available globaly
 */
var gbl = {
    'method'     : 'POST',
    'handler'    : 'ajax_handler.php',
    'showLoader' : true,
    'uploadFile' : false,
    'parent_id'  : 0
}

var default_gbl = { }

/** 
 * Here we will save the variables we want to send to the server
 */
var params = { 
    // this language is the language currenlty viewing in
    // the browser
    'lang'     : 'en',
    
    // this language is the one we tell the server we want the 
    // sent data to be in ( defaults to the current viewing language )
    'language' : 'en'
}

/** 
 * Xtra params will be send to the server along with params 
 * but will be emptied after every request
 */
var xparams = { }

// common utility functions
function $() {
  	var elements = new Array();
  	for (var i = 0; i < arguments.length; i++) {
    		var element = arguments[i];
    		if (typeof element == 'string')
    			element = document.getElementById(element);
    		if (arguments.length == 1)
    			return element;
    		elements.push(element);
  	}
  	return elements;
}

// -----------------------------------
// SENTELs namespace utilities
if (typeof SENTEL == "undefined") {
    var SENTEL = {};
}

SENTEL.util = {
    toggle : function( el ) {
        if( typeof el != 'object' )
            el = document.getElementById(el);
        
      	if ( el.style.display != 'none' ) {
            el.style.display = 'none';
      	}
      	else {
            el.style.display = 'block';
      	}
    },
    
    showLoader : function( state ) {
        var el = $('loadingDialog');
        if( !el ) return;
        
        if( !state ) 
            el.style.display = 'none';
        else 
            el.style.display = 'block';
    },
    
    response : function( o, key, index ) {
        index = ( typeof index == 'undefined' ) ? 0 : index;
//        SENTEL.log( o.responseXML );
        node = o.responseXML.getElementsByTagName(key)[index];
        return SENTEL.dom.nodeContent( node );
    },
    
    responseError : function( o ) {
        error = SENTEL.util.response( o, 'error' );
        return parseInt( error );
    },
    
    getCenter : function( obj ) {
        var cX = Math.round((Dom.getViewportWidth()  - parseInt(obj[0])) / 2);
        var cY = Math.round((Dom.getViewportHeight() - parseInt(obj[1])) / 2);
        return [cX, cY];
    }
};
        
SENTEL.log = function( mixed, type ) {
    // echo info to the console
    if( typeof console == 'object' ) {
        switch( type ) {
            case 'error': console.error( mixed ); break;
            case 'info': console.info( mixed ); break;
            default: console.log( mixed ); break;
        }
    }
}

SENTEL.dom = {
    nodeContent : function( node ) {
        // -- Crossbrowser solution
        // -- textContent for Firefox 
        // -- text for IE
        var ret = (node.text) ? node.text :
                                node.textContent;
        return ret;
    } // end getNodeContent()
};

// end SENTEL namespace utilities
// -----------------------------------

// -----------------------------------
// SENTELs YUI wrappers
SENTEL.util.sendRequest = function( action, myCallback ) {

    if( gbl.showLoader ) {
        // before we send the request show our kewl loading bar image
        SENTEL.util.showLoader(true);
    }

    var tempData = '';
    var i = 0;
    for( key in params ) {
        if( params[ key ] != 'undefined' ){
            if( i ) tempData += '&';
            
            tempData += key +'='+ params[ key ];
            i++;
        }
    }
    
    gbl.last_action	  = action;
    gbl.last_callback = myCallback;
    xparams.action = action;
    
    for( key in xparams ) {
        if( tempData != '' ) tempData += '&';
        tempData += key +'='+ xparams[ key ];
    }
    
    xparams = {};
    
    var data = { get  : '', post : '' }
    
    if( gbl.method == 'POST' ) {
        data.post = tempData;
    } else {
        data.get = '?'+ tempData;
    }
    
    var handleSuccess = function(o) {
        // hide our loader
        SENTEL.util.showLoader(false);
        
        if( o.responseText != undefined  ||
            o.responseXML != undefined ) {
            if( typeof myCallback == 'function' ) {
                myCallback(o);
            }
        }
    }
    
    var handleFailure = function(o) {
        // hide our loader
        SENTEL.util.showLoader(false);
        
        SENTEL.log( 'ajax request failed!', 'error' );
        SENTEL.log( o, 'info' );
    }
    
    if( !gbl.uploadFile ) {
        var callback = {
          success : handleSuccess,
          failure : handleFailure
        };
        
    } else {
        var callback = { 
            upload: handleSuccess 
        };
    }
    
    Connect.asyncRequest( gbl.method, 
                          gbl.handler + data.get,
                          callback, 
                          data.post );
} // end SENTEL.util.sendRequest()

/** 
 *
 */
function animateDialog( obj, fn ) {
    if( !obj.startFromEvent ) {
        Dom.setXY( obj.dlgName, obj.xy );
        
        var attrs = {
            width  : { to: obj.wh[0] }, 
            height : { to: obj.wh[1] }
        };
    } else {
        Dom.setXY( obj.dlgName, obj.startXY );
        
        var attrs = {
            points : {
                to : obj.xy
            },
            width  : { to: obj.wh[0] }, 
            height : { to: obj.wh[1] }
        };
    }
    
    var anim = new Motion( obj.dlgName, attrs, obj.duration, Easing.easeBothStrong );
    
    if( typeof fn == 'function' ) {
        anim.onComplete.subscribe( fn );
    }
    
    anim.animate();
} // end animateDialog()

// end SENTELs YUI wrappers
// -----------------------------------

function closeDialog( dlgName ) {
    el = $(dlgName);
    el.innerHTML = '';
    Dom.setXY( el, [-500, -500] );
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}


// global initializes go here
function init() { 
    toggleTocByCookie();

    sidebars = Array(
        'popProjects',
        'popCodes',
        'popPapers',
        'tagList',
        'others',
        'stupidPeople'
    );

    for( i = 0; i < sidebars.length; i++ ) {
        toggleSidebarByCookie(sidebars[i]);
    }

}

YAHOO.util.Event.addListener( window, 'load', init );

// shorhands
var Event     = YAHOO.util.Event;
var Dom       = YAHOO.util.Dom;
var Connect   = YAHOO.util.Connect;
var Animation = YAHOO.util.Animation;
var Motion    = YAHOO.util.Motion;
var Easing    = YAHOO.util.Easing;



function toggleSidebarByCookie( id ) {
    if( !$(id) )
        return;

//    alert( id );

	var sidebar = $(id);
    
	if ( readCookie( "hide_" + id  ) == '1' ) {
		sidebar.style.display = 'none';
	} else {
		sidebar.style.display = 'block';
	}
}

function toggleTocByCookie() {
	if( !$('toc') )
	    return;
	    
	var toc = $('toc').getElementsByTagName('ul')[0];
	var toggleLink = $('togglelink');
    
	if ( readCookie( 'hidetoc' ) == '1' ) {
		toggleLink.innerHTML  = "Show";
		toc.style.display = 'none';
	} else {
		toggleLink.innerHTML  = "Hide";
		toc.style.display = 'block';
	}
}

function toggleToc() {
	var toc = $('toc').getElementsByTagName('ul')[0];
	var toggleLink = $('togglelink');

	if (toc && toggleLink && toc.style.display == 'none') {
		toggleLink.innerHTML  = "Hide";
		toc.style.display = 'block';
		createCookie( 'hidetoc', '0' );
	} else {
		toggleLink.innerHTML  = "Show";
		toc.style.display = 'none';
		createCookie( 'hidetoc', '1' );
	}
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}