/** * Copyright (c) 2009 Sergiy Kovalchuk (serg472@gmail.com) * * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses. * * Following code is based on Element.mask() implementation from ExtJS framework (http://extjs.com/) * */ ;(function($){ /** * Displays loading mask over selected element(s). Accepts both single and multiple selectors. * * @param label Text message that will be displayed on top of the mask besides a spinner (optional). * If not provided only mask will be displayed without a label or a spinner. * @param delay Delay in milliseconds before element is masked (optional). If unmask() is called * before the delay times out, no mask is displayed. This can be used to prevent unnecessary * mask display for quick processes. */ $.fn.loadMask = function(label, delay){ $(this).each(function() { if(delay !== undefined && delay > 0) { var element = $(this); element.data("_mask_timeout", setTimeout(function() { $.maskElement(element, label)}, delay)); } else { $.maskElement($(this), label); } }); }; /** * Removes mask from the element(s). Accepts both single and multiple selectors. */ $.fn.loadUnmask = function(){ $(this).each(function() { $.unmaskElement($(this)); }); }; /** * Checks if a single element is masked. Returns false if mask is delayed or not displayed. */ $.fn.isMasked = function(){ return this.hasClass("masked"); }; $.maskElement = function(element, label){ //if this element has delayed mask scheduled then remove it and display the new one if (element.data("_mask_timeout") !== undefined) { clearTimeout(element.data("_mask_timeout")); element.removeData("_mask_timeout"); } if(element.isMasked()) { $.unmaskElement(element); } if(element.css("position") == "static") { element.addClass("masked-relative"); } element.addClass("masked"); var maskDiv = $('
'); //auto height fix for IE if(navigator.userAgent.toLowerCase().indexOf("msie") > -1){ maskDiv.height(element.height() + parseInt(element.css("padding-top")) + parseInt(element.css("padding-bottom"))); maskDiv.width(element.width() + parseInt(element.css("padding-left")) + parseInt(element.css("padding-right"))); } //fix for z-index bug with selects in IE6 if(navigator.userAgent.toLowerCase().indexOf("msie 6") > -1){ element.find("select").addClass("masked-hidden"); } element.append(maskDiv); if(label !== undefined) { var maskMsgDiv = $(''); maskMsgDiv.append('
' + label + '
'); element.append(maskMsgDiv); //calculate center position maskMsgDiv.css("top", Math.round(element.height() / 2 - (maskMsgDiv.height() - parseInt(maskMsgDiv.css("padding-top")) - parseInt(maskMsgDiv.css("padding-bottom"))) / 2)+"px"); maskMsgDiv.css("left", Math.round(element.width() / 2 - (maskMsgDiv.width() - parseInt(maskMsgDiv.css("padding-left")) - parseInt(maskMsgDiv.css("padding-right"))) / 2)+"px"); maskMsgDiv.show(); } }; $.unmaskElement = function(element){ //if this element has delayed mask scheduled then remove it if (element.data("_mask_timeout") !== undefined) { clearTimeout(element.data("_mask_timeout")); element.removeData("_mask_timeout"); } element.find(".loadmask-msg,.loadmask").remove(); element.removeClass("masked"); element.removeClass("masked-relative"); element.find("select").removeClass("masked-hidden"); }; })(jQuery);