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Merge pull request #1620 from alphagov/replace-jquery-in-checkboxes-js
Replace jQuery in checkboxes.js
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175 changes: 102 additions & 73 deletions
175
app/assets/javascripts/govuk_publishing_components/components/checkboxes.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,94 +1,123 @@ | ||
| /* eslint-env jquery */ | ||
| // = require govuk/vendor/polyfills/Element/prototype/closest.js | ||
| // = require govuk/components/checkboxes/checkboxes.js | ||
| window.GOVUK = window.GOVUK || {} | ||
| window.GOVUK.Modules = window.GOVUK.Modules || {} | ||
| window.GOVUK.Modules.Checkboxes = window.GOVUKFrontend; | ||
|
|
||
| (function (Modules) { | ||
| 'use strict' | ||
|
|
||
| Modules.GovukCheckboxes = function () { | ||
| this.start = function (scope) { | ||
| var _this = this | ||
| this.applyAriaControlsAttributes(scope) | ||
|
|
||
| $(scope).on('change', '[data-nested=true] input[type=checkbox]', function (e) { | ||
| var checkbox = e.target | ||
| var isNested = $(checkbox).closest('.govuk-checkboxes--nested') | ||
| var hasNested = $('.govuk-checkboxes--nested[data-parent=' + checkbox.id + ']') | ||
|
|
||
| if (hasNested.length) { | ||
| _this.toggleNestedCheckboxes(hasNested, checkbox) | ||
| } else if (isNested.length) { | ||
| _this.toggleParentCheckbox(isNested, checkbox) | ||
| } | ||
| }) | ||
|
|
||
| $(scope).on('change', 'input[type=checkbox]', function (e) { | ||
| if (window.GOVUK.analytics && window.GOVUK.analytics.trackEvent) { | ||
| // where checkboxes are manipulated externally in finders, suppressAnalytics | ||
| // is passed to prevent duplicate GA events | ||
| if (typeof e.suppressAnalytics === 'undefined' || e.suppressAnalytics !== true) { | ||
| var $checkbox = $(e.target) | ||
| var category = $checkbox.data('track-category') | ||
| if (typeof category !== 'undefined') { | ||
| var isChecked = $checkbox.is(':checked') | ||
| var uncheckTrackCategory = $checkbox.data('uncheck-track-category') | ||
| if (!isChecked && typeof uncheckTrackCategory !== 'undefined') { | ||
| category = uncheckTrackCategory | ||
| } | ||
| var action = $checkbox.data('track-action') | ||
| var options = $checkbox.data('track-options') | ||
| if (typeof options !== 'object' || options === null) { | ||
| options = {} | ||
| } | ||
| options.value = $checkbox.data('track-value') | ||
| options.label = $checkbox.data('track-label') | ||
| window.GOVUK.analytics.trackEvent(category, action, options) | ||
| } | ||
| function GovukCheckboxes () { } | ||
|
|
||
| GovukCheckboxes.prototype.start = function ($module) { | ||
| this.$module = $module[0] | ||
| this.$checkboxes = this.$module.querySelectorAll('input[type=checkbox]') | ||
| this.$nestedCheckboxes = this.$module.querySelectorAll('[data-nested=true] input[type=checkbox]') | ||
| this.$exclusiveCheckboxes = this.$module.querySelectorAll('[data-exclusive=true] input[type=checkbox]') | ||
|
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| this.applyAriaControlsAttributes(this.$module) | ||
|
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| for (var i = 0; i < this.$checkboxes.length; i++) { | ||
| this.$checkboxes[i].addEventListener('change', this.handleCheckboxChange) | ||
| } | ||
|
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||
| for (i = 0; i < this.$nestedCheckboxes.length; i++) { | ||
| this.$nestedCheckboxes[i].addEventListener('change', this.handleNestedCheckboxChange.bind(this)) | ||
| } | ||
|
|
||
| for (i = 0; i < this.$exclusiveCheckboxes.length; i++) { | ||
| this.$exclusiveCheckboxes[i].addEventListener('change', this.handleExclusiveCheckboxChange) | ||
| } | ||
| } | ||
|
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||
| GovukCheckboxes.prototype.handleCheckboxChange = function (event) { | ||
| if (window.GOVUK.analytics && window.GOVUK.analytics.trackEvent) { | ||
| // Where checkboxes are manipulated externally in finders, `suppressAnalytics` | ||
| // is passed to prevent duplicate GA events. | ||
| if (!event.detail || (event.detail && event.detail.suppressAnalytics !== true)) { | ||
| var $checkbox = event.target | ||
| var category = $checkbox.getAttribute('data-track-category') | ||
| if (category) { | ||
| var uncheckTrackCategory = $checkbox.getAttribute('data-uncheck-track-category') | ||
| if (!$checkbox.checked && uncheckTrackCategory) { | ||
| category = uncheckTrackCategory | ||
| } | ||
| var action = $checkbox.getAttribute('data-track-action') | ||
| var options = $checkbox.getAttribute('data-track-options') | ||
| if (options) { | ||
| options = JSON.parse(options) | ||
| } else { | ||
| options = {} | ||
| } | ||
| options.value = $checkbox.getAttribute('data-track-value') | ||
| options.label = $checkbox.getAttribute('data-track-label') | ||
| window.GOVUK.analytics.trackEvent(category, action, options) | ||
| } | ||
| }) | ||
|
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||
| $(scope).on('change', '[data-exclusive=true] input[type=checkbox]', function (e) { | ||
| var currentCheckbox = e.target | ||
| var checkboxes = currentCheckbox.closest('.govuk-checkboxes') | ||
| var exclusiveOption = $(checkboxes).find('input[type=checkbox][data-exclusive]') | ||
| var nonExclusiveOptions = $(checkboxes).find('input[type=checkbox]:not([data-exclusive])') | ||
|
|
||
| if (currentCheckbox.dataset.exclusive === 'true' && currentCheckbox.checked === true) { | ||
| nonExclusiveOptions.each(function () { | ||
| $(this).prop('checked', false) | ||
| }) | ||
| } else if (currentCheckbox.dataset.exclusive !== 'true' && currentCheckbox.checked === true) { | ||
| exclusiveOption.prop('checked', false) | ||
| } | ||
| }) | ||
| } | ||
| } | ||
| } | ||
|
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||
| this.toggleNestedCheckboxes = function (scope, checkbox) { | ||
| if (checkbox.checked) { | ||
| scope.find('input[type=checkbox]').prop('checked', true) | ||
| } else { | ||
| scope.find('input[type=checkbox]').prop('checked', false) | ||
| GovukCheckboxes.prototype.handleNestedCheckboxChange = function (event) { | ||
| var $checkbox = event.target | ||
| var $isNested = $checkbox.closest('.govuk-checkboxes--nested') | ||
| var $hasNested = this.$module.querySelector('.govuk-checkboxes--nested[data-parent=' + $checkbox.id + ']') | ||
|
|
||
| if ($hasNested) { | ||
| this.toggleNestedCheckboxes($hasNested, $checkbox) | ||
| } else if ($isNested) { | ||
| this.toggleParentCheckbox($isNested, $checkbox) | ||
| } | ||
| } | ||
|
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||
| GovukCheckboxes.prototype.toggleNestedCheckboxes = function ($scope, $checkbox) { | ||
| var $nestedCheckboxes = $scope.querySelectorAll('input[type=checkbox]') | ||
| if ($checkbox.checked) { | ||
| for (var i = 0; i < $nestedCheckboxes.length; i++) { | ||
| $nestedCheckboxes[i].checked = true | ||
| } | ||
| } else { | ||
| for (i = 0; i < $nestedCheckboxes.length; i++) { | ||
| $nestedCheckboxes[i].checked = false | ||
| } | ||
| } | ||
| } | ||
|
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||
| GovukCheckboxes.prototype.toggleParentCheckbox = function ($scope, $checkbox) { | ||
| var $inputs = $scope.querySelectorAll('input') | ||
| var $checkedInputs = $scope.querySelectorAll('input:checked') | ||
| var parentId = $scope.getAttribute('data-parent') | ||
| var $parent = document.getElementById(parentId) | ||
|
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||
| if ($checkbox.checked && $inputs.length === $checkedInputs.length) { | ||
| $parent.checked = true | ||
| } else { | ||
| $parent.checked = false | ||
| } | ||
| } | ||
|
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||
| this.toggleParentCheckbox = function (scope, checkbox) { | ||
| var siblings = $(checkbox).closest('.govuk-checkboxes__item').siblings() | ||
| var parentId = scope.data('parent') | ||
| GovukCheckboxes.prototype.handleExclusiveCheckboxChange = function (event) { | ||
| var $currentCheckbox = event.target | ||
| var $checkboxes = $currentCheckbox.closest('.govuk-checkboxes') | ||
| var $exclusiveOption = $checkboxes.querySelector('input[type=checkbox][data-exclusive]') | ||
| var $nonExclusiveOptions = $checkboxes.querySelectorAll('input[type=checkbox]:not([data-exclusive])') | ||
|
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||
| if (checkbox.checked && siblings.length === siblings.find(':checked').length) { | ||
| $('#' + parentId).prop('checked', true) | ||
| } else { | ||
| $('#' + parentId).prop('checked', false) | ||
| if ($currentCheckbox.dataset.exclusive === 'true' && $currentCheckbox.checked === true) { | ||
| for (var i = 0; i < $nonExclusiveOptions.length; i++) { | ||
| $nonExclusiveOptions[i].checked = false | ||
| } | ||
| } else if ($currentCheckbox.dataset.exclusive !== 'true' && $currentCheckbox.checked === true) { | ||
| if ($exclusiveOption) { | ||
| $exclusiveOption.checked = false | ||
| } | ||
| } | ||
| } | ||
|
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||
| GovukCheckboxes.prototype.applyAriaControlsAttributes = function ($scope) { | ||
| var $inputs = $scope.querySelectorAll('[data-controls]') | ||
|
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||
| this.applyAriaControlsAttributes = function (scope) { | ||
| $(scope).find('[data-controls]').each(function () { | ||
| $(this).attr('aria-controls', $(this).attr('data-controls')) | ||
| }) | ||
| for (var i = 0; i < $inputs.length; i++) { | ||
| $inputs[i].setAttribute('aria-controls', $inputs[i].getAttribute('data-controls')) | ||
| } | ||
| } | ||
|
|
||
| Modules.GovukCheckboxes = GovukCheckboxes | ||
| })(window.GOVUK.Modules) |
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