72 lines
1.8 KiB
Vue
72 lines
1.8 KiB
Vue
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<!--
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- Copyright 2020 James Lyne
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-
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- Licensed under the Apache License, Version 2.0 (the "License");
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- you may not use this file except in compliance with the License.
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- You may obtain a copy of the License at
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-
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- http://www.apache.org/licenses/LICENSE-2.0
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-
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- Unless required by applicable law or agreed to in writing, software
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- distributed under the License is distributed on an "AS IS" BASIS,
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- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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- See the License for the specific language governing permissions and
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- limitations under the License.
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-->
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<template>
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<fieldset class="menu" role="radiogroup" @keydown="onKeydown">
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<slot></slot>
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</fieldset>
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</template>
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<script lang="ts">
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import {defineComponent} from 'vue';
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export default defineComponent({
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name: 'RadioList',
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setup() {
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},
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methods: {
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onKeydown(e: KeyboardEvent) {
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if(e.key === 'ArrowUp' || e.key === 'ArrowDown' || e.key === 'ArrowLeft' || e.key === 'ArrowRight') {
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const fieldset = e.currentTarget as HTMLFieldSetElement,
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position = Array.from(fieldset.elements).indexOf(e.target as HTMLElement);
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if(position < 0) {
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return;
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}
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let newPosition = (e.key === 'ArrowUp' || e.key === 'ArrowLeft') ? position - 1 : position + 1;
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if(newPosition < 0) {
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newPosition = fieldset.elements.length - 1;
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} else if (newPosition >= fieldset.elements.length) {
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newPosition = 0;
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}
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(fieldset.elements[newPosition] as HTMLElement).focus();
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e.preventDefault();
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} else if(e.key === 'Enter') {
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if(e.target instanceof HTMLInputElement && e.target.type === 'radio') {
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e.target.click();
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}
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}
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}
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}
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});
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</script>
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<style lang="scss">
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@import '../../scss/mixins';
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fieldset {
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appearance: none;
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border: none;
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margin: 0;
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padding: 0;
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}
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</style>
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