121 lines
2.8 KiB
JavaScript
121 lines
2.8 KiB
JavaScript
//
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// This content is inspired by w3c aria example
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// https://www.w3.org/TR/wai-aria-practices-1.1/examples/disclosure/disclosure-faq.html
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//
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class ButtonExpand {
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constructor(domNode) {
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this.domNode = domNode;
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this.keyCode = Object.freeze({
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RETURN: 13
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});
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this.allButtons = [];
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this.controlledNode = false;
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var id = this.domNode.getAttribute('aria-controls');
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if (id) {
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this.controlledNode = document.getElementById(id);
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}
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this.domNode.setAttribute('aria-expanded', 'false');
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this.hideContent();
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this.domNode.addEventListener('keydown', this.handleKeydown.bind(this));
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this.domNode.addEventListener('click', this.handleClick.bind(this));
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this.domNode.addEventListener('focus', this.handleFocus.bind(this));
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this.domNode.addEventListener('blur', this.handleBlur.bind(this));
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}
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showContent() {
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this.domNode.setAttribute('aria-expanded', 'true');
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this.domNode.classList.add('primary');
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if (this.controlledNode) {
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this.controlledNode.classList.remove('hidden');
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}
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this.formInput.value = this.domNode.getAttribute('data-question-type');
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this.allButtons.forEach((b) => {
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if (b != this) {
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b.hideContent();
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}
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});
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}
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hideContent() {
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this.domNode.setAttribute('aria-expanded', 'false');
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this.domNode.classList.remove('primary');
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if (this.controlledNode) {
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this.controlledNode.classList.add('hidden');
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}
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}
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toggleExpand() {
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if (this.domNode.getAttribute('aria-expanded') === 'true') {
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this.hideContent();
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} else {
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this.showContent();
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}
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}
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setAllButtons(buttons) {
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this.allButtons = buttons;
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}
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setFormInput(formInput) {
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this.formInput = formInput;
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}
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handleKeydown() {
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switch (event.keyCode) {
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case this.keyCode.RETURN:
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this.toggleExpand();
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event.stopPropagation();
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event.preventDefault();
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break;
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default:
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break;
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}
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}
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handleClick() {
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event.stopPropagation();
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event.preventDefault();
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this.toggleExpand();
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}
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handleFocus = function () {
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this.domNode.classList.add('focus');
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};
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handleBlur() {
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this.domNode.classList.remove('focus');
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}
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}
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/* Initialize Hide/Show Buttons */
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if (document.querySelector('#contact-form')) {
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window.addEventListener(
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'ds:page:update',
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function () {
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var buttons = document.querySelectorAll(
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'button[aria-expanded][aria-controls], button.button-without-hint'
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);
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var expandButtons = [];
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var formInput = document.querySelector('form input#type');
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buttons.forEach((button) => {
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var be = new ButtonExpand(button);
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expandButtons.push(be);
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});
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expandButtons.forEach((button) => button.setAllButtons(expandButtons));
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expandButtons.forEach((button) => button.setFormInput(formInput));
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},
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false
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);
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}
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