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WIP: get button from personalisation API
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...ets/javascripts/govuk_publishing_components/components/single-page-notification-button.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| /* global XMLHttpRequest */ | ||
| window.GOVUK = window.GOVUK || {} | ||
| window.GOVUK.Modules = window.GOVUK.Modules || {}; | ||
|
|
||
| (function (Modules) { | ||
| function SinglePageNotificationButton ($module) { | ||
| this.$module = $module | ||
| this.basePath = this.$module.querySelector('[name="base_path"]').value | ||
| } | ||
|
|
||
| SinglePageNotificationButton.prototype.init = function () { | ||
| var xhr = new XMLHttpRequest() | ||
| var url = '/api/personalisation/check-email-subscription?base_path=' + this.basePath | ||
| xhr.open('GET', url, true) | ||
| xhr.onreadystatechange = function () { | ||
| if (xhr.readyState === 4 && xhr.status === 200) { | ||
| var responseText = xhr.responseText | ||
| // if response text exists and is JSON parse-able, parse the response and get the button html | ||
| if (responseText && this.responseIsJSON(responseText)) { | ||
| var newButton = JSON.parse(responseText).button_html | ||
| var html = document.createElement('div') | ||
| html.innerHTML = newButton | ||
| // test that the html returned contains the button component; if yes, swap the button for the updated version | ||
| var responseHasButton = html.querySelector('.gem-c-single-page-notification-button') | ||
| if (responseHasButton) { | ||
| this.$module.outerHTML = newButton | ||
| } | ||
| } | ||
| } | ||
| }.bind(this) | ||
| xhr.send() | ||
| } | ||
|
|
||
| SinglePageNotificationButton.prototype.responseIsJSON = function (string) { | ||
| try { | ||
| JSON.parse(string) | ||
| } catch (e) { | ||
| return false | ||
| } | ||
| return true | ||
| } | ||
| Modules.SinglePageNotificationButton = SinglePageNotificationButton | ||
| })(window.GOVUK.Modules) |
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