// Events
$(document).ready(function() {
	// Dismiss "flash" messages
	$("a.closeflash").click(function() {
		$("div.flash").slideUp("fast", function() { $(this).remove(); });
	});
	
});


// add alphanumeric validation to jQuery
jQuery.validator.addMethod("alphanumeric", function(value, element) {
	return this.optional(element) || /^\w+$/i.test(value);
}, "Letters, numbers or underscores only please");


// nl2br equivalent
function nl2br (str, is_xhtml) {
    // Converts newlines to HTML line breaks
    //
    // version: 1006.1915
    // discuss at: http://phpjs.org/functions/nl2br    // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: Philip Peterson
    // +   improved by: Onno Marsman
    // +   improved by: Atli Þór
    // +   bugfixed by: Onno Marsman    // +      input by: Brett Zamir (http://brett-zamir.me)
    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: Brett Zamir (http://brett-zamir.me)
    // +   improved by: Maximusya
    // *     example 1: nl2br('Kevin\nvan\nZonneveld');
    // *     returns 1: 'Kevin\nvan\nZonneveld'
    // *     example 2: nl2br("\nOne\nTwo\n\nThree\n", false);
    // *     returns 2: '<br>\nOne<br>\nTwo<br>\n<br>\nThree<br>\n'
    // *     example 3: nl2br("\nOne\nTwo\n\nThree\n", true);
    // *     returns 3: '\nOne\nTwo\n\nThree\n'

    var breakTag = (is_xhtml || typeof is_xhtml === 'undefined') ? '' : '<br>';

    return (str + '').replace(/([^>\r\n]?)(\r\n|\n\r|\r|\n)/g, '$1'+ breakTag +'$2');
}

// yellowfade
function easeInOut(minValue,maxValue,totalSteps,actualStep,powr) {
    var delta = maxValue - minValue;
    var stepp = minValue+(Math.pow(((1 / totalSteps)*actualStep),powr)*delta);
    return Math.ceil(stepp)
}

function yellowfade(elem,startRGB,endRGB,finalColor,steps,intervals,powr) {
    if (elem.bgFadeInt) window.clearInterval(elem.bgFadeInt);
    var actStep = 0;
    elem.bgFadeInt = window.setInterval(
        function() {
                elem.css("backgroundColor", "rgb("+
                        easeInOut(startRGB[0],endRGB[0],steps,actStep,powr)+","+
                        easeInOut(startRGB[1],endRGB[1],steps,actStep,powr)+","+
                        easeInOut(startRGB[2],endRGB[2],steps,actStep,powr)+")"
                );
                actStep++;
                if (actStep > steps) {
                elem.css("backgroundColor", finalColor);
                window.clearInterval(elem.bgFadeInt);
                }
        }
        ,intervals)
}

// make auth
function make_base_auth(user, password) {
  var tok = user + ':' + password;
  var hash = Base64.encode(tok);
  return "Basic " + hash;
}


// show js void(0)
function jsvoid() {
    return "href='javascript: void(0);'";
}

// build auth for an ajax call
function ajax_auth(xhr) {
    xhr.setRequestHeader("Authorization", my_auth);
}

// catch urls in text and turn them into links
function urlify(text) {
    var urlRegex = /(https?:\/\/[^\s]+)/g;
    return text.replace(urlRegex, function(url) {
        return '<a href="' + url + '">'+ url + '<span class="ui-icon ui-icon-extlink"></span></a>';
    })
    // or alternatively
    // return text.replace(urlRegex, '<a href="$1">$1</a>')
}

// round a number, with max decimal places
function roundNumber(num, dec) {
    var result = Math.round(num*Math.pow(10,dec))/Math.pow(10,dec);
    return result;
}


// display a filesize in the biggest possible unit
function filesize_convert(size) {
    var units = "b";
    size = parseInt(size);

    // Kb
    if (size > 1024) {
	units = "Kb";
	size = Math.ceil(size/1024);
    }

    // Mb
    if (size > 1024) {
	units = "Mb";
	size = roundNumber(size/1024, 2);
    }

    // Gb
    if (size > 1024) {
	units = "Gb";
	size = roundNumber(size/1024, 2);
    }

    // round to 2 decimal places and return
    return size+units;
}