392 lines
14 KiB
Vue
392 lines
14 KiB
Vue
<template>
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<PanelMenuSub
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:id="panelId + '_list'"
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class="p-panelmenu-root-list"
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role="tree"
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:tabindex="-1"
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:aria-activedescendant="focused ? focusedItemId : undefined"
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:panelId="panelId"
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:focusedItemId="focused ? focusedItemId : undefined"
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:items="processedItems"
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:template="template"
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:activeItemPath="activeItemPath"
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:exact="exact"
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@focus="onFocus"
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@blur="onBlur"
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@keydown="onKeyDown"
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@item-toggle="onItemToggle"
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/>
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</template>
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<script>
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import { DomHandler, ObjectUtils } from 'primevue/utils';
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import PanelMenuSub from './PanelMenuSub.vue';
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export default {
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name: 'PanelMenuList',
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emits: ['item-toggle', 'header-focus'],
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props: {
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panelId: {
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type: String,
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default: null
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},
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items: {
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type: Array,
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default: null
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},
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template: {
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type: Function,
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default: null
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},
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expandedKeys: {
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type: Object,
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default: null
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},
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exact: {
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type: Boolean,
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default: true
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}
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},
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searchTimeout: null,
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searchValue: null,
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data() {
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return {
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focused: false,
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focusedItem: null,
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activeItemPath: []
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};
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},
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watch: {
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expandedKeys(newValue) {
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this.autoUpdateActiveItemPath(newValue);
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}
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},
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mounted() {
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this.autoUpdateActiveItemPath(this.expandedKeys);
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},
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methods: {
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getItemProp(processedItem, name) {
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return processedItem && processedItem.item ? ObjectUtils.getItemValue(processedItem.item[name]) : undefined;
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},
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getItemLabel(processedItem) {
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return this.getItemProp(processedItem, 'label');
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},
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isItemVisible(processedItem) {
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return this.getItemProp(processedItem, 'visible') !== false;
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},
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isItemDisabled(processedItem) {
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return this.getItemProp(processedItem, 'disabled');
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},
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isItemActive(processedItem) {
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return this.activeItemPath.some((path) => path.key === processedItem.parentKey);
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},
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isItemGroup(processedItem) {
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return ObjectUtils.isNotEmpty(processedItem.items);
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},
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onFocus(event) {
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this.focused = true;
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this.focusedItem = this.focusedItem || (this.isElementInPanel(event, event.relatedTarget) ? this.findFirstItem() : this.findLastItem());
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},
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onBlur() {
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this.focused = false;
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this.focusedItem = null;
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this.searchValue = '';
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},
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onKeyDown(event) {
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const metaKey = event.metaKey || event.ctrlKey;
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switch (event.code) {
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case 'ArrowDown':
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this.onArrowDownKey(event);
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break;
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case 'ArrowUp':
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this.onArrowUpKey(event);
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break;
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case 'ArrowLeft':
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this.onArrowLeftKey(event);
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break;
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case 'ArrowRight':
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this.onArrowRightKey(event);
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break;
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case 'Home':
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this.onHomeKey(event);
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break;
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case 'End':
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this.onEndKey(event);
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break;
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case 'Space':
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this.onSpaceKey(event);
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break;
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case 'Enter':
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this.onEnterKey(event);
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break;
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case 'Escape':
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case 'Tab':
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case 'PageDown':
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case 'PageUp':
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case 'Backspace':
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case 'ShiftLeft':
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case 'ShiftRight':
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//NOOP
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break;
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default:
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if (!metaKey && ObjectUtils.isPrintableCharacter(event.key)) {
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this.searchItems(event, event.key);
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}
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break;
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}
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},
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onArrowDownKey(event) {
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const processedItem = ObjectUtils.isNotEmpty(this.focusedItem) ? this.findNextItem(this.focusedItem) : this.findFirstItem();
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this.changeFocusedItem({ originalEvent: event, processedItem, focusOnNext: true });
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event.preventDefault();
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},
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onArrowUpKey(event) {
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const processedItem = ObjectUtils.isNotEmpty(this.focusedItem) ? this.findPrevItem(this.focusedItem) : this.findLastItem();
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this.changeFocusedItem({ originalEvent: event, processedItem, selfCheck: true });
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event.preventDefault();
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},
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onArrowLeftKey(event) {
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if (ObjectUtils.isNotEmpty(this.focusedItem)) {
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const matched = this.activeItemPath.some((p) => p.key === this.focusedItem.key);
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if (matched) {
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this.activeItemPath = this.activeItemPath.filter((p) => p.key !== this.focusedItem.key);
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} else {
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this.focusedItem = ObjectUtils.isNotEmpty(this.focusedItem.parent) ? this.focusedItem.parent : this.focusedItem;
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}
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event.preventDefault();
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}
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},
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onArrowRightKey(event) {
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if (ObjectUtils.isNotEmpty(this.focusedItem)) {
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const grouped = this.isItemGroup(this.focusedItem);
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if (grouped) {
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const matched = this.activeItemPath.some((p) => p.key === this.focusedItem.key);
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if (matched) {
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this.onArrowDownKey(event);
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} else {
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this.activeItemPath = this.activeItemPath.filter((p) => p.parentKey !== this.focusedItem.parentKey);
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this.activeItemPath.push(this.focusedItem);
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}
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}
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event.preventDefault();
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}
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},
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onHomeKey(event) {
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this.changeFocusedItem({ originalEvent: event, processedItem: this.findFirstItem(), allowHeaderFocus: false });
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event.preventDefault();
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},
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onEndKey(event) {
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this.changeFocusedItem({ originalEvent: event, processedItem: this.findLastItem(), focusOnNext: true, allowHeaderFocus: false });
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event.preventDefault();
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},
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onEnterKey(event) {
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if (ObjectUtils.isNotEmpty(this.focusedItem)) {
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const element = DomHandler.findSingle(this.$el, `li[id="${`${this.focusedItemId}`}"]`);
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const anchorElement = element && (DomHandler.findSingle(element, '.p-menuitem-link') || DomHandler.findSingle(element, 'a,button'));
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anchorElement ? anchorElement.click() : element && element.click();
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}
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event.preventDefault();
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},
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onSpaceKey(event) {
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this.onEnterKey(event);
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},
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onItemToggle(event) {
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const { processedItem, expanded } = event;
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if (this.expandedKeys) {
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this.$emit('item-toggle', { item: processedItem.item, expanded });
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} else {
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this.activeItemPath = this.activeItemPath.filter((p) => p.parentKey !== processedItem.parentKey);
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expanded && this.activeItemPath.push(processedItem);
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}
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this.focusedItem = processedItem;
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DomHandler.focus(this.$el);
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},
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isElementInPanel(event, element) {
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const panel = event.currentTarget.closest('.p-panelmenu-panel');
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return panel && panel.contains(element);
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},
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isItemMatched(processedItem) {
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return this.isValidItem(processedItem) && this.getItemLabel(processedItem).toLocaleLowerCase(this.searchLocale).startsWith(this.searchValue.toLocaleLowerCase(this.searchLocale));
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},
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isVisibleItem(processedItem) {
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return !!processedItem && (processedItem.level === 0 || this.isItemActive(processedItem)) && this.isItemVisible(processedItem);
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},
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isValidItem(processedItem) {
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return !!processedItem && !this.isItemDisabled(processedItem);
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},
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findFirstItem() {
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return this.visibleItems.find((processedItem) => this.isValidItem(processedItem));
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},
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findLastItem() {
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return ObjectUtils.findLast(this.visibleItems, (processedItem) => this.isValidItem(processedItem));
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},
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findNextItem(processedItem) {
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const index = this.visibleItems.findIndex((item) => item.key === processedItem.key);
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const matchedItem = index < this.visibleItems.length - 1 ? this.visibleItems.slice(index + 1).find((pItem) => this.isValidItem(pItem)) : undefined;
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return matchedItem || processedItem;
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},
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findPrevItem(processedItem) {
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const index = this.visibleItems.findIndex((item) => item.key === processedItem.key);
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const matchedItem = index > 0 ? ObjectUtils.findLast(this.visibleItems.slice(0, index), (pItem) => this.isValidItem(pItem)) : undefined;
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return matchedItem || processedItem;
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},
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searchItems(event, char) {
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this.searchValue = (this.searchValue || '') + char;
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let matchedItem = null;
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let matched = false;
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if (ObjectUtils.isNotEmpty(this.focusedItem)) {
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const focusedItemIndex = this.visibleItems.findIndex((processedItem) => processedItem.key === this.focusedItem.key);
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matchedItem = this.visibleItems.slice(focusedItemIndex).find((processedItem) => this.isItemMatched(processedItem));
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matchedItem = ObjectUtils.isEmpty(matchedItem) ? this.visibleItems.slice(0, focusedItemIndex).find((processedItem) => this.isItemMatched(processedItem)) : matchedItem;
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} else {
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matchedItem = this.visibleItems.find((processedItem) => this.isItemMatched(processedItem));
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}
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if (ObjectUtils.isNotEmpty(matchedItem)) {
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matched = true;
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}
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if (ObjectUtils.isEmpty(matchedItem) && ObjectUtils.isEmpty(this.focusedItem)) {
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matchedItem = this.findFirstItem();
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}
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if (ObjectUtils.isNotEmpty(matchedItem)) {
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this.changeFocusedItem({
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originalEvent: event,
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processedItem: matchedItem,
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allowHeaderFocus: false
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});
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}
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if (this.searchTimeout) {
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clearTimeout(this.searchTimeout);
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}
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this.searchTimeout = setTimeout(() => {
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this.searchValue = '';
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this.searchTimeout = null;
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}, 500);
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return matched;
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},
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changeFocusedItem(event) {
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const { originalEvent, processedItem, focusOnNext, selfCheck, allowHeaderFocus = true } = event;
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if (ObjectUtils.isNotEmpty(this.focusedItem) && this.focusedItem.key !== processedItem.key) {
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this.focusedItem = processedItem;
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this.scrollInView();
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} else if (allowHeaderFocus) {
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this.$emit('header-focus', { originalEvent, focusOnNext, selfCheck });
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}
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},
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scrollInView() {
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const element = DomHandler.findSingle(this.$el, `li[id="${`${this.focusedItemId}`}"]`);
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if (element) {
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element.scrollIntoView && element.scrollIntoView({ block: 'nearest', inline: 'start' });
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}
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},
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autoUpdateActiveItemPath(expandedKeys) {
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this.activeItemPath = Object.entries(expandedKeys || {}).reduce((acc, [key, val]) => {
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if (val) {
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const processedItem = this.findProcessedItemByItemKey(key);
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processedItem && acc.push(processedItem);
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}
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return acc;
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}, []);
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},
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findProcessedItemByItemKey(key, processedItems, level = 0) {
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processedItems = processedItems || (level === 0 && this.processedItems);
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if (!processedItems) return null;
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for (let i = 0; i < processedItems.length; i++) {
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const processedItem = processedItems[i];
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if (this.getItemProp(processedItem, 'key') === key) return processedItem;
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const matchedItem = this.findProcessedItemByItemKey(key, processedItem.items, level + 1);
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if (matchedItem) return matchedItem;
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}
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},
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createProcessedItems(items, level = 0, parent = {}, parentKey = '') {
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const processedItems = [];
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items &&
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items.forEach((item, index) => {
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const key = (parentKey !== '' ? parentKey + '_' : '') + index;
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const newItem = {
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item,
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index,
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level,
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key,
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parent,
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parentKey
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};
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newItem['items'] = this.createProcessedItems(item.items, level + 1, newItem, key);
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processedItems.push(newItem);
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});
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return processedItems;
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},
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flatItems(processedItems, processedFlattenItems = []) {
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processedItems &&
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processedItems.forEach((processedItem) => {
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if (this.isVisibleItem(processedItem)) {
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processedFlattenItems.push(processedItem);
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this.flatItems(processedItem.items, processedFlattenItems);
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}
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});
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return processedFlattenItems;
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}
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},
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computed: {
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processedItems() {
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return this.createProcessedItems(this.items || []);
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},
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visibleItems() {
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return this.flatItems(this.processedItems);
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},
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focusedItemId() {
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return ObjectUtils.isNotEmpty(this.focusedItem) ? `${this.panelId}_${this.focusedItem.key}` : null;
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}
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},
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components: {
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PanelMenuSub: PanelMenuSub
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}
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};
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</script>
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