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(function ($) {
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$.fn.enableCheckboxRangeSelection = function () {
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var lastCheckbox = null;
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var $spec = this;
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$spec.unbind("click.checkboxrange");
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$spec.bind("click.checkboxrange", function (e) {
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if (lastCheckbox != null && (e.shiftKey || e.metaKey)) {
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$spec.slice(
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Math.min($spec.index(lastCheckbox), $spec.index(e.target)),
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Math.max($spec.index(lastCheckbox), $spec.index(e.target)) + 1
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).prop('checked', e.target.checked);
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}
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lastCheckbox = e.target;
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});
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};
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})(jQuery);
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