/**
 * @fileoverview Global functions
 */
/**
 * Hack to reduce background image flickering in IE 6
 */
/*@cc_on
	@if (@_jscript_version == 5.6)
		try {
			document.execCommand("BackgroundImageCache", false, true);
		} catch(err) {}
	@end
@*/

/* Create NetR namespace */
if(typeof NetR == "undefined"){ var NetR = {}; }

$(function(){
	if ($('.tab-box').size()) {
		new NETR.Tabbox($('.tab-box'));
	}
	if ($('.q-quiz').size()) {
		new NETR.Tabquiz($('.q-quiz'));
	}
	$('form input[type=checkbox], form input[type=radio]').customInput();
});

/**
 * Display an alert dialog when inactive links are clicked.
 */
NetR.linkInfo = function() {
	var sInfoText = 'Denna länk är inte aktiv i prototypen.';
	function init() {
		var links = document.getElementsByTagName('a');
		var re = /inactive|^netrp-/;
		var oLink;
		for (var i=0, l=links.length; i<l; i++) {
			oLink = links[i];
			/* The second parameter is needed for IE to return the actual value of the href attribute */
			if (re.test(oLink.getAttribute('href',2))) {
				oLink.onclick = function() {
					alert(sInfoText);
					return false;
				};
			}
		}
	}
	return {
		init:init
	};
}();

/**
 * @requires jQuery
 * Add ARIA Landmark Roles
 */
NetR.addARIA = function() {
	function init() {
	    $('#header').attr({role: 'banner'});
	    $('#content-primary').attr({role: 'main'});
        $('#nav-main').attr({role: 'navigation'});
        $('#nav-sub').attr({role: 'navigation'});
        $('#content-secondary').attr({role: 'complementary'});
        $('#search').attr({role: 'search'});
        $('#footer').attr({role: 'contentinfo'});
	}
	return {
		init:init
	};
}();

/**
 * @requires jQuery
 * Finds all links with the supplied combination of attribute and value
 * and sets their target attribute to '_blank' to open a new window.
 * An image can be used instead of plain text.
 */
NetR.JSTarget = function() {
    var options = {
        att: 'class', // The attribute to look for
        val: 'new-window', // The value that triggers a new window
        widthPrefix: 'w', // Prefixes for width and height (e.g. w400 h400)
        heightPrefix: 'h',
        warning: '', // Text that is appended to the link.
        image: null, // The URL for an image that is used instead of plain text
        imageLinkClass: 'nw-image', // Class added to links that contain images
        hiddenClass: 'structural' // Class added to the image
    };
    /**
    * Initialization
    */
    function init(opts) {
        // If options were supplied, apply them to the option Object.
        for (var key in opts) {
            if (options.hasOwnProperty(key)) {
                options[key] = opts[key];
            }
        }
        var oWarning, oImage;
        var reAtt = new RegExp("(^|\\s)" + options.val + "(\\s|$)");
        var reWidth = new RegExp("(^|\\s)" + options.widthPrefix + "([0-9]+)(\\s|$)");
        var reHeight = new RegExp("(^|\\s)" + options.heightPrefix + "([0-9]+)(\\s|$)");
        $('a').each(function() {
            var sAttVal;
            if (options.att == 'class') {
                sAttVal = this.className;
            } else {
                sAttVal = this.getAttribute(options.att);
            }
            if (reAtt.test(sAttVal)) {
                if (options.image) {
                    oImage = document.createElement('img');
                    oImage.src = options.image;
                    oImage.setAttribute('alt', options.warning);
                    oImage.className = options.hiddenClass;
                    this.appendChild(oImage);
                    $(this).addClass(options.imageLinkClass);
                    this.setAttribute('title', options.warning);
                } else {
                    if (options.warning != null && options.warning.length > 0) {
                        oWarning = document.createElement("em");
                        oWarning.appendChild(document.createTextNode(' (' + options.warning + ')'));
                        this.appendChild(oWarning);
                    }
                }
                // If width and height values exist, open a sized window
                if (reWidth.test(sAttVal) && reHeight.test(sAttVal)) {
                    $(this).click(function() {
                        var sOptions = 'menubar=yes,toolbar=no,location=yes,resizable=yes,scrollbars=yes,status=yes,width=' + reWidth.exec(sAttVal)[2] + ',height=' + reHeight.exec(sAttVal)[2];
                        window.open(this.href, '_blank', sOptions);
                        return false;
                    });
                }
                this.target = '_blank';
            }
        });
        oWarning = null;
        oImage = null;
    }
    return {
        init: init
    };
} ();

/**
 * Creates a link that triggers the browser's window.print function.
 */
NetR.addPrintLink = function () {
	var options = {
		targetEl: 'content-primary', // Id of the element the link is appended to
		linkText: 'Skriv ut sidan',
		linkId: 'print-link'
	};
	/**
	* Initialization
	*/
	function init(opts) {
		// If options were supplied, apply them to the option Object.
		for (var key in opts) {
			if (options.hasOwnProperty(key)) {
				options[key] = opts[key];
			}
		}
		var oTarget = document.getElementById(options.targetEl);
		if (!oTarget) {return;}
		if (!window.print) {return;}
		var oLink = document.createElement('a');
		oLink.id = options.linkId;
		oLink.href = '#';
		oLink.appendChild(document.createTextNode(options.linkText));
		oLink.onclick = function() {
			window.print();
			return false;
		};
		oTarget.appendChild(oLink);
	}
	return {
		init: init
	};
}();

/**
 * @requires jQuery
 * Converts plain text to mailto links
 */
NetR.activateEmailLinks = function () {
	var options = {
		emailClass: 'hidden-email', // Class name for elements that contain an optional name and an obfuscated email address
		textClass: 'email-text', // Optional text to be used as the visible link text
		addressClass: 'email-address', // The obfuscated email adress (entity encoded, decimal or hexadecimal)
		salt: 'INGEN_SPAM_' // Optional prefix to further reduce the risk of spam bots picking up addresses
	};
	/**
	* Initialization
	*/
	function init(opts) {
		// If options were supplied, apply them to the option Object.
		for (var key in opts) {
			if (options.hasOwnProperty(key)) {
				options[key] = opts[key];
			}
		}
		$('.' + options.emailClass).each(function () {
		    var textElem = $(this).find('.' + options.textClass + ':first');
		    var addressElem = $(this).find('.' + options.addressClass + ':first');
		    if ($(addressElem).length) {
		        var textText = addressText = $(addressElem).text();
		        if ($(textElem).length) {
		            textText = $(textElem).text();
		        }
                $(this).html('<a href="mailto:' + addressText.replace(options.salt,"") + '">' + textText.replace(options.salt,"") + '</a>');
		    }
		});
	}
	return {
		init: init
	};
}();

// Init on document ready
$(document).ready(function() {
	NetR.linkInfo.init();
	NetR.addARIA.init();
	NetR.JSTarget.init({
		val: 'new-window',
		warning: ''
	});
	NetR.activateEmailLinks.init();
	// NetR.addPrintLink.init({
	// 	linkText: 'Skriv ut sidan'
	// });
});