443 lines
14 KiB
Vue
Executable File
443 lines
14 KiB
Vue
Executable File
<template>
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<div :class="contentClasses">
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<div class="p-tabview-nav-container">
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<button
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v-if="scrollable && !isPrevButtonDisabled"
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ref="prevBtn"
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v-ripple
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type="button"
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class="p-tabview-nav-prev p-tabview-nav-btn p-link"
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:tabindex="tabindex"
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:aria-label="prevButtonAriaLabel"
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@click="onPrevButtonClick"
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v-bind="previousButtonProps"
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>
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<span class="pi pi-chevron-left" aria-hidden="true"></span>
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</button>
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<div ref="content" class="p-tabview-nav-content" @scroll="onScroll">
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<ul ref="nav" class="p-tabview-nav" role="tablist">
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<li v-for="(tab, i) of tabs" :key="getKey(tab, i)" :style="getTabProp(tab, 'headerStyle')" :class="getTabHeaderClass(tab, i)" role="presentation" :data-index="i" v-bind="getTabProp(tab, 'headerProps')">
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<a
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:id="getTabHeaderActionId(i)"
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v-ripple
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class="p-tabview-nav-link p-tabview-header-action"
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:tabindex="getTabProp(tab, 'disabled') || !isTabActive(i) ? -1 : tabindex"
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role="tab"
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:aria-disabled="getTabProp(tab, 'disabled')"
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:aria-selected="isTabActive(i)"
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:aria-controls="getTabContentId(i)"
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@click="onTabClick($event, tab, i)"
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@keydown="onTabKeyDown($event, tab, i)"
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v-bind="getTabProp(tab, 'headerActionProps')"
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>
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<span v-if="tab.props && tab.props.header" class="p-tabview-title">{{ tab.props.header }}</span>
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<component v-if="tab.children && tab.children.header" :is="tab.children.header"></component>
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</a>
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</li>
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<li ref="inkbar" class="p-tabview-ink-bar" role="presentation" aria-hidden="true"></li>
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</ul>
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</div>
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<button
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v-if="scrollable && !isNextButtonDisabled"
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ref="nextBtn"
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v-ripple
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type="button"
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class="p-tabview-nav-next p-tabview-nav-btn p-link"
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:tabindex="tabindex"
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:aria-label="nextButtonAriaLabel"
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@click="onNextButtonClick"
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v-bind="nextButtonProps"
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>
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<span class="pi pi-chevron-right" aria-hidden="true"></span>
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</button>
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</div>
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<div class="p-tabview-panels">
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<template v-for="(tab, i) of tabs" :key="getKey(tab, i)">
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<div
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v-if="lazy ? isTabActive(i) : true"
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v-show="lazy ? true : isTabActive(i)"
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:style="getTabProp(tab, 'contentStyle')"
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:class="getTabContentClass(tab)"
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role="tabpanel"
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:aria-labelledby="getTabHeaderActionId(i)"
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v-bind="getTabProp(tab, 'contentProps')"
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>
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<component :is="tab"></component>
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</div>
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</template>
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</div>
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</div>
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</template>
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<script>
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import Ripple from 'primevue/ripple';
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import { DomHandler, UniqueComponentId } from 'primevue/utils';
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export default {
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name: 'TabView',
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emits: ['update:activeIndex', 'tab-change', 'tab-click'],
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props: {
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activeIndex: {
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type: Number,
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default: 0
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},
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lazy: {
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type: Boolean,
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default: false
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},
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scrollable: {
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type: Boolean,
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default: false
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},
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tabindex: {
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type: Number,
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default: 0
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},
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selectOnFocus: {
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type: Boolean,
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default: false
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},
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previousButtonProps: {
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type: null,
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defaault: null
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},
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nextButtonProps: {
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type: null,
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defaault: null
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}
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},
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data() {
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return {
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d_activeIndex: this.activeIndex,
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isPrevButtonDisabled: true,
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isNextButtonDisabled: false
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};
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},
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watch: {
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activeIndex(newValue) {
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this.d_activeIndex = newValue;
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this.scrollInView({ index: newValue });
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}
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},
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mounted() {
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this.updateInkBar();
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this.scrollable && this.updateButtonState();
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},
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updated() {
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this.updateInkBar();
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},
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methods: {
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isTabPanel(child) {
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return child.type.name === 'TabPanel';
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},
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isTabActive(index) {
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return this.d_activeIndex === index;
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},
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getTabProp(tab, name) {
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return tab.props ? tab.props[name] : undefined;
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},
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getKey(tab, index) {
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return this.getTabProp(tab, 'header') || index;
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},
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getTabHeaderActionId(index) {
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return `${this.id}_${index}_header_action`;
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},
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getTabContentId(index) {
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return `${this.id}_${index}_content`;
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},
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onScroll(event) {
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this.scrollable && this.updateButtonState();
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event.preventDefault();
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},
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onPrevButtonClick() {
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const content = this.$refs.content;
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const width = DomHandler.getWidth(content) - this.getVisibleButtonWidths();
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const pos = content.scrollLeft - width;
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content.scrollLeft = pos <= 0 ? 0 : pos;
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},
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onNextButtonClick() {
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const content = this.$refs.content;
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const width = DomHandler.getWidth(content) - this.getVisibleButtonWidths();
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const pos = content.scrollLeft + width;
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const lastPos = content.scrollWidth - width;
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content.scrollLeft = pos >= lastPos ? lastPos : pos;
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},
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onTabClick(event, tab, index) {
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this.changeActiveIndex(event, tab, index);
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this.$emit('tab-click', { originalEvent: event, index });
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},
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onTabKeyDown(event, tab, index) {
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switch (event.code) {
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case 'ArrowLeft':
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this.onTabArrowLeftKey(event);
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break;
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case 'ArrowRight':
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this.onTabArrowRightKey(event);
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break;
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case 'Home':
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this.onTabHomeKey(event);
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break;
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case 'End':
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this.onTabEndKey(event);
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break;
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case 'PageDown':
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this.onPageDownKey(event);
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break;
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case 'PageUp':
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this.onPageUpKey(event);
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break;
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case 'Enter':
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case 'Space':
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this.onTabEnterKey(event, tab, index);
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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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onTabArrowRightKey(event) {
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const nextHeaderAction = this.findNextHeaderAction(event.target.parentElement);
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nextHeaderAction ? this.changeFocusedTab(event, nextHeaderAction) : this.onTabHomeKey(event);
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event.preventDefault();
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},
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onTabArrowLeftKey(event) {
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const prevHeaderAction = this.findPrevHeaderAction(event.target.parentElement);
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prevHeaderAction ? this.changeFocusedTab(event, prevHeaderAction) : this.onTabEndKey(event);
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event.preventDefault();
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},
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onTabHomeKey(event) {
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const firstHeaderAction = this.findFirstHeaderAction();
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this.changeFocusedTab(event, firstHeaderAction);
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event.preventDefault();
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},
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onTabEndKey(event) {
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const lastHeaderAction = this.findLastHeaderAction();
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this.changeFocusedTab(event, lastHeaderAction);
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event.preventDefault();
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},
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onPageDownKey(event) {
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this.scrollInView({ index: this.$refs.nav.children.length - 2 });
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event.preventDefault();
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},
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onPageUpKey(event) {
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this.scrollInView({ index: 0 });
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event.preventDefault();
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},
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onTabEnterKey(event, tab, index) {
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this.changeActiveIndex(event, tab, index);
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event.preventDefault();
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},
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findNextHeaderAction(tabElement, selfCheck = false) {
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const headerElement = selfCheck ? tabElement : tabElement.nextElementSibling;
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return headerElement
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? DomHandler.hasClass(headerElement, 'p-disabled') || DomHandler.hasClass(headerElement, 'p-tabview-ink-bar')
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? this.findNextHeaderAction(headerElement)
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: DomHandler.findSingle(headerElement, '.p-tabview-header-action')
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: null;
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},
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findPrevHeaderAction(tabElement, selfCheck = false) {
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const headerElement = selfCheck ? tabElement : tabElement.previousElementSibling;
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return headerElement
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? DomHandler.hasClass(headerElement, 'p-disabled') || DomHandler.hasClass(headerElement, 'p-tabview-ink-bar')
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? this.findPrevHeaderAction(headerElement)
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: DomHandler.findSingle(headerElement, '.p-tabview-header-action')
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: null;
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},
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findFirstHeaderAction() {
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return this.findNextHeaderAction(this.$refs.nav.firstElementChild, true);
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},
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findLastHeaderAction() {
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return this.findPrevHeaderAction(this.$refs.nav.lastElementChild, true);
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},
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changeActiveIndex(event, tab, index) {
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if (!this.getTabProp(tab, 'disabled') && this.d_activeIndex !== index) {
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this.d_activeIndex = index;
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this.$emit('update:activeIndex', index);
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this.$emit('tab-change', { originalEvent: event, index });
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this.scrollInView({ index });
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}
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},
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changeFocusedTab(event, element) {
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if (element) {
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DomHandler.focus(element);
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this.scrollInView({ element });
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if (this.selectOnFocus) {
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const index = parseInt(element.parentElement.dataset.index, 10);
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const tab = this.tabs[index];
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this.changeActiveIndex(event, tab, index);
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}
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}
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},
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scrollInView({ element, index = -1 }) {
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const currentElement = element || this.$refs.nav.children[index];
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if (currentElement) {
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currentElement.scrollIntoView && currentElement.scrollIntoView({ block: 'nearest' });
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}
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},
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updateInkBar() {
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let tabHeader = this.$refs.nav.children[this.d_activeIndex];
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this.$refs.inkbar.style.width = DomHandler.getWidth(tabHeader) + 'px';
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this.$refs.inkbar.style.left = DomHandler.getOffset(tabHeader).left - DomHandler.getOffset(this.$refs.nav).left + 'px';
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},
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updateButtonState() {
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const content = this.$refs.content;
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const { scrollLeft, scrollWidth } = content;
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const width = DomHandler.getWidth(content);
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this.isPrevButtonDisabled = scrollLeft === 0;
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this.isNextButtonDisabled = parseInt(scrollLeft) === scrollWidth - width;
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},
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getVisibleButtonWidths() {
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const { prevBtn, nextBtn } = this.$refs;
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return [prevBtn, nextBtn].reduce((acc, el) => (el ? acc + DomHandler.getWidth(el) : acc), 0);
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},
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getTabHeaderClass(tab, i) {
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return [
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'p-tabview-header',
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this.getTabProp(tab, 'headerClass'),
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{
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'p-highlight': this.d_activeIndex === i,
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'p-disabled': this.getTabProp(tab, 'disabled')
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}
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];
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},
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getTabContentClass(tab) {
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return ['p-tabview-panel', this.getTabProp(tab, 'contentClass')];
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}
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},
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computed: {
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contentClasses() {
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return [
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'p-tabview p-component',
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{
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'p-tabview-scrollable': this.scrollable
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}
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];
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},
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tabs() {
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return this.$slots.default().reduce((tabs, child) => {
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if (this.isTabPanel(child)) {
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tabs.push(child);
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} else if (child.children && child.children instanceof Array) {
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child.children.forEach((nestedChild) => {
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if (this.isTabPanel(nestedChild)) {
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tabs.push(nestedChild);
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}
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});
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}
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return tabs;
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}, []);
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},
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prevButtonAriaLabel() {
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return this.$primevue.config.locale.aria ? this.$primevue.config.locale.aria.previous : undefined;
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},
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nextButtonAriaLabel() {
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return this.$primevue.config.locale.aria ? this.$primevue.config.locale.aria.next : undefined;
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},
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id() {
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return this.$attrs.id || UniqueComponentId();
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}
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},
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directives: {
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ripple: Ripple
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}
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};
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</script>
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<style>
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.p-tabview-nav-container {
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position: relative;
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}
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.p-tabview-scrollable .p-tabview-nav-container {
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overflow: hidden;
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}
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.p-tabview-nav-content {
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overflow-x: auto;
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overflow-y: hidden;
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scroll-behavior: smooth;
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scrollbar-width: none;
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overscroll-behavior: contain auto;
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}
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.p-tabview-nav {
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display: flex;
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margin: 0;
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padding: 0;
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list-style-type: none;
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flex: 1 1 auto;
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}
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.p-tabview-header-action {
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cursor: pointer;
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user-select: none;
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display: flex;
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align-items: center;
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position: relative;
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text-decoration: none;
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overflow: hidden;
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}
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.p-tabview-ink-bar {
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display: none;
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z-index: 1;
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}
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.p-tabview-header-action:focus {
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z-index: 1;
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}
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.p-tabview-title {
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line-height: 1;
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white-space: nowrap;
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}
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.p-tabview-nav-btn {
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position: absolute;
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top: 0;
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z-index: 2;
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height: 100%;
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display: flex;
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align-items: center;
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justify-content: center;
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}
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.p-tabview-nav-prev {
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left: 0;
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}
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.p-tabview-nav-next {
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right: 0;
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}
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.p-tabview-nav-content::-webkit-scrollbar {
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display: none;
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}
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</style>
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