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📝 Editing: jquery.blockUI.js

/*!
 * jQuery blockUI plugin
 * Version 2.70.0-2014.11.23
 * Requires jQuery v1.7 or later
 *
 * Examples at: http://malsup.com/jquery/block/
 * Copyright (c) 2007-2013 M. Alsup
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 * Thanks to Amir-Hossein Sobhi for some excellent contributions!
 */
;(function() {
/*jshint eqeqeq:false curly:false latedef:false */
"use strict";

function setup($) {
		$.fn._fadeIn = $.fn.fadeIn;

var noOp = $.noop || function() {};

// this bit is to ensure we don't call setExpression when we shouldn't (with extra muscle to handle
		// confusing userAgent strings on Vista)
		var msie = /MSIE/.test(navigator.userAgent);
		var ie6  = /MSIE 6.0/.test(navigator.userAgent) && ! /MSIE 8.0/.test(navigator.userAgent);
		var mode = document.documentMode || 0;
		var setExpr = $.isFunction( document.createElement('div').style.setExpression );

// global $ methods for blocking/unblocking the entire page
		$.blockUI   = function(opts) { install(window, opts); };
		$.unblockUI = function(opts) { remove(window, opts); };

// convenience method for quick growl-like notifications  (http://www.google.com/search?q=growl)
		$.growlUI = function(title, message, timeout, onClose) {
			var $m = $('<div class="growlUI"></div>');
			if (title) $m.append('<h1>'+title+'</h1>');
			if (message) $m.append('<h2>'+message+'</h2>');
			if (timeout === undefined) timeout = 3000;

// Added by konapun: Set timeout to 30 seconds if this growl is moused over, like normal toast notifications
			var callBlock = function(opts) {
				opts = opts || {};

$.blockUI({
					message: $m,
					fadeIn : typeof opts.fadeIn  !== 'undefined' ? opts.fadeIn  : 700,
					fadeOut: typeof opts.fadeOut !== 'undefined' ? opts.fadeOut : 1000,
					timeout: typeof opts.timeout !== 'undefined' ? opts.timeout : timeout,
					centerY: false,
					showOverlay: false,
					onUnblock: onClose,
					css: $.blockUI.defaults.growlCSS
				});
			};

callBlock();
			var nonmousedOpacity = $m.css('opacity');
			$m.mouseover(function() {
				callBlock({
					fadeIn: 0,
					timeout: 30000
				});

var displayBlock = $('.blockMsg');
				displayBlock.stop(); // cancel fadeout if it has started
				displayBlock.fadeTo(300, 1); // make it easier to read the message by removing transparency
			}).mouseout(function() {
				$('.blockMsg').fadeOut(1000);
			});
			// End konapun additions
		};

// plugin method for blocking element content
		$.fn.block = function(opts) {
			if ( this[0] === window ) {
				$.blockUI( opts );
				return this;
			}
			var fullOpts = $.extend({}, $.blockUI.defaults, opts || {});
			this.each(function() {
				var $el = $(this);
				if (fullOpts.ignoreIfBlocked && $el.data('blockUI.isBlocked'))
					return;
				$el.unblock({ fadeOut: 0 });
			});

return this.each(function() {
				if ($.css(this,'position') == 'static') {
					this.style.position = 'relative';
					$(this).data('blockUI.static', true);
				}
				this.style.zoom = 1; // force 'hasLayout' in ie
				install(this, opts);
			});
		};

// plugin method for unblocking element content
		$.fn.unblock = function(opts) {
			if ( this[0] === window ) {
				$.unblockUI( opts );
				return this;
			}
			return this.each(function() {
				remove(this, opts);
			});
		};

$.blockUI.version = 2.70; // 2nd generation blocking at no extra cost!

// override these in your code to change the default behavior and style
		$.blockUI.defaults = {
			// message displayed when blocking (use null for no message)
			message:  '<h1>Please wait...</h1>',

title: null,		// title string; only used when theme == true
			draggable: true,	// only used when theme == true (requires jquery-ui.js to be loaded)

theme: false, // set to true to use with jQuery UI themes

// styles for the message when blocking; if you wish to disable
			// these and use an external stylesheet then do this in your code:
			// $.blockUI.defaults.css = {};
			css: {
				padding:	0,
				margin:		0,
				width:		'30%',
				top:		'40%',
				left:		'35%',
				textAlign:	'center',
				color:		'#000',
				border:		'3px solid #aaa',
				backgroundColor:'#fff',
				cursor:		'wait'
			},

// minimal style set used when themes are used
			themedCSS: {
				width:	'30%',
				top:	'40%',
				left:	'35%'
			},

// styles for the overlay
			overlayCSS:  {
				backgroundColor:	'#000',
				opacity:			0.6,
				cursor:				'wait'
			},

// style to replace wait cursor before unblocking to correct issue
			// of lingering wait cursor
			cursorReset: 'default',

// styles applied when using $.growlUI
			growlCSS: {
				width:		'350px',
				top:		'10px',
				left:		'',
				right:		'10px',
				border:		'none',
				padding:	'5px',
				opacity:	0.6,
				cursor:		'default',
				color:		'#fff',
				backgroundColor: '#000',
				'-webkit-border-radius':'10px',
				'-moz-border-radius':	'10px',
				'border-radius':		'10px'
			},

// IE issues: 'about:blank' fails on HTTPS and javascript:false is s-l-o-w
			// (hat tip to Jorge H. N. de Vasconcelos)
			/*jshint scripturl:true */
			iframeSrc: /^https/i.test(window.location.href || '') ? 'javascript:false' : 'about:blank',

// force usage of iframe in non-IE browsers (handy for blocking applets)
			forceIframe: false,

// z-index for the blocking overlay
			baseZ: 1000,

// set these to true to have the message automatically centered
			centerX: true, // <-- only effects element blocking (page block controlled via css above)
			centerY: true,

// allow body element to be stetched in ie6; this makes blocking look better
			// on "short" pages.  disable if you wish to prevent changes to the body height
			allowBodyStretch: true,

// enable if you want key and mouse events to be disabled for content that is blocked
			bindEvents: true,

// be default blockUI will supress tab navigation from leaving blocking content
			// (if bindEvents is true)
			constrainTabKey: true,

// fadeIn time in millis; set to 0 to disable fadeIn on block
			fadeIn:  200,

// fadeOut time in millis; set to 0 to disable fadeOut on unblock
			fadeOut:  400,

// time in millis to wait before auto-unblocking; set to 0 to disable auto-unblock
			timeout: 0,

// disable if you don't want to show the overlay
			showOverlay: true,

// if true, focus will be placed in the first available input field when
			// page blocking
			focusInput: true,

// elements that can receive focus
            focusableElements: ':input:enabled:visible',

// suppresses the use of overlay styles on FF/Linux (due to performance issues with opacity)
			// no longer needed in 2012
			// applyPlatformOpacityRules: true,

// callback method invoked when fadeIn has completed and blocking message is visible
			onBlock: null,

// callback method invoked when unblocking has completed; the callback is
			// passed the element that has been unblocked (which is the window object for page
			// blocks) and the options that were passed to the unblock call:
			//	onUnblock(element, options)
			onUnblock: null,

// callback method invoked when the overlay area is clicked.
			// setting this will turn the cursor to a pointer, otherwise cursor defined in overlayCss will be used.
			onOverlayClick: null,

// don't ask; if you really must know: http://groups.google.com/group/jquery-en/browse_thread/thread/36640a8730503595/2f6a79a77a78e493#2f6a79a77a78e493
			quirksmodeOffsetHack: 4,

// class name of the message block
			blockMsgClass: 'blockMsg',

// if it is already blocked, then ignore it (don't unblock and reblock)
			ignoreIfBlocked: false
		};

// private data and functions follow...

var pageBlock = null;
		var pageBlockEls = [];

function install(el, opts) {
			var css, themedCSS;
			var full = (el == window);
			var msg = (opts && opts.message !== undefined ? opts.message : undefined);
			opts = $.extend({}, $.blockUI.defaults, opts || {});

if (opts.ignoreIfBlocked && $(el).data('blockUI.isBlocked'))
				return;

opts.overlayCSS = $.extend({}, $.blockUI.defaults.overlayCSS, opts.overlayCSS || {});
			css = $.extend({}, $.blockUI.defaults.css, opts.css || {});
			if (opts.onOverlayClick)
				opts.overlayCSS.cursor = 'pointer';

themedCSS = $.extend({}, $.blockUI.defaults.themedCSS, opts.themedCSS || {});
			msg = msg === undefined ? opts.message : msg;

// remove the current block (if there is one)
			if (full && pageBlock)
				remove(window, {fadeOut:0});

// if an existing element is being used as the blocking content then we capture
			// its current place in the DOM (and current display style) so we can restore
			// it when we unblock
			if (msg && typeof msg != 'string' && (msg.parentNode || msg.jquery)) {
				var node = msg.jquery ? msg[0] : msg;
				var data = {};
				$(el).data('blockUI.history', data);
				data.el = node;
				data.parent = node.parentNode;
				data.display = node.style.display;
				data.position = node.style.position;
				if (data.parent)
					data.parent.removeChild(node);
			}

$(el).data('blockUI.onUnblock', opts.onUnblock);
			var z = opts.baseZ;

// blockUI uses 3 layers for blocking, for simplicity they are all used on every platform;
			// layer1 is the iframe layer which is used to supress bleed through of underlying content
			// layer2 is the overlay layer which has opacity and a wait cursor (by default)
			// layer3 is the message content that is displayed while blocking
			var lyr1, lyr2, lyr3, s;
			if (msie || opts.forceIframe)
				lyr1 = $('<iframe class="blockUI" style="z-index:'+ (z++) +';display:none;border:none;margin:0;padding:0;position:absolute;width:100%;height:100%;top:0;left:0" src="'+opts.iframeSrc+'"></iframe>');
			else
				lyr1 = $('<div class="blockUI" style="display:none"></div>');

if (opts.theme)
				lyr2 = $('<div class="blockUI blockOverlay ui-widget-overlay" style="z-index:'+ (z++) +';display:none"></div>');
			else
				lyr2 = $('<div class="blockUI blockOverlay" style="z-index:'+ (z++) +';display:none;border:none;margin:0;padding:0;width:100%;height:100%;top:0;left:0"></div>');

if (opts.theme && full) {
				s = '<div class="blockUI ' + opts.blockMsgClass + ' blockPage ui-dialog ui-widget ui-corner-all" style="z-index:'+(z+10)+';display:none;position:fixed">';
				if ( opts.title ) {
					s += '<div class="ui-widget-header ui-dialog-titlebar ui-corner-all blockTitle">'+(opts.title || '&nbsp;')+'</div>';
				}
				s += '<div class="ui-widget-content ui-dialog-content"></div>';
				s += '</div>';
			}
			else if (opts.theme) {
				s = '<div class="blockUI ' + opts.blockMsgClass + ' blockElement ui-dialog ui-widget ui-corner-all" style="z-index:'+(z+10)+';display:none;position:absolute">';
				if ( opts.title ) {
					s += '<div class="ui-widget-header ui-dialog-titlebar ui-corner-all blockTitle">'+(opts.title || '&nbsp;')+'</div>';
				}
				s += '<div class="ui-widget-content ui-dialog-content"></div>';
				s += '</div>';
			}
			else if (full) {
				s = '<div class="blockUI ' + opts.blockMsgClass + ' blockPage" style="z-index:'+(z+10)+';display:none;position:fixed"></div>';
			}
			else {
				s = '<div class="blockUI ' + opts.blockMsgClass + ' blockElement" style="z-index:'+(z+10)+';display:none;position:absolute"></div>';
			}
			lyr3 = $(s);

// if we have a message, style it
			if (msg) {
				if (opts.theme) {
					lyr3.css(themedCSS);
					lyr3.addClass('ui-widget-content');
				}
				else
					lyr3.css(css);
			}

// style the overlay
			if (!opts.theme /*&& (!opts.applyPlatformOpacityRules)*/)
				lyr2.css(opts.overlayCSS);
			lyr2.css('position', full ? 'fixed' : 'absolute');

// make iframe layer transparent in IE
			if (msie || opts.forceIframe)
				lyr1.css('opacity',0.0);

//$([lyr1[0],lyr2[0],lyr3[0]]).appendTo(full ? 'body' : el);
			var layers = [lyr1,lyr2,lyr3], $par = full ? $('body') : $(el);
			$.each(layers, function() {
				this.appendTo($par);
			});

if (opts.theme && opts.draggable && $.fn.draggable) {
				lyr3.draggable({
					handle: '.ui-dialog-titlebar',
					cancel: 'li'
				});
			}

// ie7 must use absolute positioning in quirks mode and to account for activex issues (when scrolling)
			var expr = setExpr && (!$.support.boxModel || $('object,embed', full ? null : el).length > 0);
			if (ie6 || expr) {
				// give body 100% height
				if (full && opts.allowBodyStretch && $.support.boxModel)
					$('html,body').css('height','100%');

// fix ie6 issue when blocked element has a border width
				if ((ie6 || !$.support.boxModel) && !full) {
					var t = sz(el,'borderTopWidth'), l = sz(el,'borderLeftWidth');
					var fixT = t ? '(0 - '+t+')' : 0;
					var fixL = l ? '(0 - '+l+')' : 0;
				}

// simulate fixed position
				$.each(layers, function(i,o) {
					var s = o[0].style;
					s.position = 'absolute';
					if (i < 2) {
						if (full)
							s.setExpression('height','Math.max(document.body.scrollHeight, document.body.offsetHeight) - (jQuery.support.boxModel?0:'+opts.quirksmodeOffsetHack+') + "px"');
						else
							s.setExpression('height','this.parentNode.offsetHeight + "px"');
						if (full)
							s.setExpression('width','jQuery.support.boxModel && document.documentElement.clientWidth || document.body.clientWidth + "px"');
						else
							s.setExpression('width','this.parentNode.offsetWidth + "px"');
						if (fixL) s.setExpression('left', fixL);
						if (fixT) s.setExpression('top', fixT);
					}
					else if (opts.centerY) {
						if (full) s.setExpression('top','(document.documentElement.clientHeight || document.body.clientHeight) / 2 - (this.offsetHeight / 2) + (blah = document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop) + "px"');
						s.marginTop = 0;
					}
					else if (!opts.centerY && full) {
						var top = (opts.css && opts.css.top) ? parseInt(opts.css.top, 10) : 0;
						var expression = '((document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop) + '+top+') + "px"';
						s.setExpression('top',expression);
					}
				});
			}

// show the message
			if (msg) {
				if (opts.theme)
					lyr3.find('.ui-widget-content').append(msg);
				else
					lyr3.append(msg);
				if (msg.jquery || msg.nodeType)
					$(msg).show();
			}

if ((msie || opts.forceIframe) && opts.showOverlay)
				lyr1.show(); // opacity is zero
			if (opts.fadeIn) {
				var cb = opts.onBlock ? opts.onBlock : noOp;
				var cb1 = (opts.showOverlay && !msg) ? cb : noOp;
				var cb2 = msg ? cb : noOp;
				if (opts.showOverlay)
					lyr2._fadeIn(opts.fadeIn, cb1);
				if (msg)
					lyr3._fadeIn(opts.fadeIn, cb2);
			}
			else {
				if (opts.showOverlay)
					lyr2.show();
				if (msg)
					lyr3.show();
				if (opts.onBlock)
					opts.onBlock.bind(lyr3)();
			}

// bind key and mouse events
			bind(1, el, opts);

if (full) {
				pageBlock = lyr3[0];
				pageBlockEls = $(opts.focusableElements,pageBlock);
				if (opts.focusInput)
					setTimeout(focus, 20);
			}
			else
				center(lyr3[0], opts.centerX, opts.centerY);

if (opts.timeout) {
				// auto-unblock
				var to = setTimeout(function() {
					if (full)
						$.unblockUI(opts);
					else
						$(el).unblock(opts);
				}, opts.timeout);
				$(el).data('blockUI.timeout', to);
			}
		}

// remove the block
		function remove(el, opts) {
			var count;
			var full = (el == window);
			var $el = $(el);
			var data = $el.data('blockUI.history');
			var to = $el.data('blockUI.timeout');
			if (to) {
				clearTimeout(to);
				$el.removeData('blockUI.timeout');
			}
			opts = $.extend({}, $.blockUI.defaults, opts || {});
			bind(0, el, opts); // unbind events

if (opts.onUnblock === null) {
				opts.onUnblock = $el.data('blockUI.onUnblock');
				$el.removeData('blockUI.onUnblock');
			}

var els;
			if (full) // crazy selector to handle odd field errors in ie6/7
				els = $(document.body).children().filter('.blockUI').add('body > .blockUI');
			else
				els = $el.find('>.blockUI');

// fix cursor issue
			if ( opts.cursorReset ) {
				if ( els.length > 1 )
					els[1].style.cursor = opts.cursorReset;
				if ( els.length > 2 )
					els[2].style.cursor = opts.cursorReset;
			}

if (full)
				pageBlock = pageBlockEls = null;

if (opts.fadeOut) {
				count = els.length;
				els.stop().fadeOut(opts.fadeOut, function() {
					if ( --count === 0)
						reset(els,data,opts,el);
				});
			}
			else
				reset(els, data, opts, el);
		}

// move blocking element back into the DOM where it started
		function reset(els,data,opts,el) {
			var $el = $(el);
			if ( $el.data('blockUI.isBlocked') )
				return;

els.each(function(i,o) {
				// remove via DOM calls so we don't lose event handlers
				if (this.parentNode)
					this.parentNode.removeChild(this);
			});

if (data && data.el) {
				data.el.style.display = data.display;
				data.el.style.position = data.position;
				data.el.style.cursor = 'default'; // #59
				if (data.parent)
					data.parent.appendChild(data.el);
				$el.removeData('blockUI.history');
			}

if ($el.data('blockUI.static')) {
				$el.css('position', 'static'); // #22
			}

if (typeof opts.onUnblock == 'function')
				opts.onUnblock(el,opts);

// fix issue in Safari 6 where block artifacts remain until reflow
			var body = $(document.body), w = body.width(), cssW = body[0].style.width;
			body.width(w-1).width(w);
			body[0].style.width = cssW;
		}

// bind/unbind the handler
		function bind(b, el, opts) {
			var full = el == window, $el = $(el);

// don't bother unbinding if there is nothing to unbind
			if (!b && (full && !pageBlock || !full && !$el.data('blockUI.isBlocked')))
				return;

$el.data('blockUI.isBlocked', b);

// don't bind events when overlay is not in use or if bindEvents is false
			if (!full || !opts.bindEvents || (b && !opts.showOverlay))
				return;

// bind anchors and inputs for mouse and key events
			var events = 'mousedown mouseup keydown keypress keyup touchstart touchend touchmove';
			if (b)
				$(document).bind(events, opts, handler);
			else
				$(document).unbind(events, handler);

// former impl...
		//		var $e = $('a,:input');
		//		b ? $e.bind(events, opts, handler) : $e.unbind(events, handler);
		}

// event handler to suppress keyboard/mouse events when blocking
		function handler(e) {
			// allow tab navigation (conditionally)
			if (e.type === 'keydown' && e.keyCode && e.keyCode == 9) {
				if (pageBlock && e.data.constrainTabKey) {
					var els = pageBlockEls;
					var fwd = !e.shiftKey && e.target === els[els.length-1];
					var back = e.shiftKey && e.target === els[0];
					if (fwd || back) {
						setTimeout(function(){focus(back);},10);
						return false;
					}
				}
			}
			var opts = e.data;
			var target = $(e.target);
			if (target.hasClass('blockOverlay') && opts.onOverlayClick)
				opts.onOverlayClick(e);

// allow events within the message content
			if (target.parents('div.' + opts.blockMsgClass).length > 0)
				return true;

// allow events for content that is not being blocked
			return target.parents().children().filter('div.blockUI').length === 0;
		}

function focus(back) {
			if (!pageBlockEls)
				return;
			var e = pageBlockEls[back===true ? pageBlockEls.length-1 : 0];
			if (e)
				e.focus();
		}

function center(el, x, y) {
			var p = el.parentNode, s = el.style;
			var l = ((p.offsetWidth - el.offsetWidth)/2) - sz(p,'borderLeftWidth');
			var t = ((p.offsetHeight - el.offsetHeight)/2) - sz(p,'borderTopWidth');
			if (x) s.left = l > 0 ? (l+'px') : '0';
			if (y) s.top  = t > 0 ? (t+'px') : '0';
		}

function sz(el, p) {
			return parseInt($.css(el,p),10)||0;
		}

}

/*global define:true */
	if (typeof define === 'function' && define.amd && define.amd.jQuery) {
		define(['jquery'], setup);
	} else {
		setup(jQuery);
	}

})();