40 lines
1 KiB
JavaScript
40 lines
1 KiB
JavaScript
(function (window) {
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"use strict";
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window.ls.container.get("view").add({
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selector: "data-duplications",
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controller: function (element) {
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let validate = function (element) {
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let duplication = 0;
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let form = element.form;
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for (let i = 0; i < form.elements.length; i++) {
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let field = form.elements[i];
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if(field.name === element.name && field.value === element.value) {
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duplication++;
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}
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}
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if(duplication > 1) { // self + another element with same name and value
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element.setCustomValidity("Duplicated value");
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}
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else {
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element.setCustomValidity("");
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}
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};
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element.addEventListener('change', function(event) {
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validate(event.target)
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});
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element.addEventListener('focus', function(event) {
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validate(event.target)
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});
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element.addEventListener('blur', function(event) {
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validate(event.target)
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});
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}
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});
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})(window);
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