primevue-mirror/components/lib/megamenu/MegaMenu.vue

652 lines
24 KiB
Vue
Executable File

<template>
<div :ref="containerRef" :id="id" :class="cx('root')" v-bind="ptm('root')" data-pc-name="megamenu">
<div v-if="$slots.start" :class="cx('start')" v-bind="ptm('start')">
<slot name="start"></slot>
</div>
<a
v-if="model && model.length > 0"
ref="menubutton"
role="button"
tabindex="0"
:class="cx('menubutton')"
:aria-haspopup="model.length && model.length > 0 ? true : false"
:aria-expanded="mobileActive"
:aria-controls="id"
:aria-label="$primevue.config.locale.aria?.navigation"
@click="menuButtonClick($event)"
@keydown="menuButtonKeydown($event)"
v-bind="ptm('menubutton')"
>
<slot name="menubuttonicon">
<BarsIcon v-bind="ptm('menubuttonicon')" />
</slot>
</a>
<MegaMenuSub
:ref="menubarRef"
:id="id + '_list'"
:tabindex="!disabled ? tabindex : -1"
role="menubar"
:aria-label="ariaLabel"
:aria-labelledby="ariaLabelledby"
:aria-disabled="disabled || undefined"
:aria-orientation="orientation"
:aria-activedescendant="focused ? focusedItemId : undefined"
:menuId="id"
:focusedItemId="focused ? focusedItemId : undefined"
:items="processedItems"
:horizontal="horizontal"
:templates="$slots"
:activeItem="activeItem"
:mobileActive="mobileActive"
:level="0"
:pt="pt"
:unstyled="unstyled"
@focus="onFocus"
@blur="onBlur"
@keydown="onKeyDown"
@item-click="onItemClick"
@item-mouseenter="onItemMouseEnter"
/>
<div v-if="$slots.end" :class="cx('end')" v-bind="ptm('end')">
<slot name="end"></slot>
</div>
</div>
</template>
<script>
import BarsIcon from 'primevue/icons/bars';
import { DomHandler, ObjectUtils, UniqueComponentId, ZIndexUtils } from 'primevue/utils';
import BaseMegaMenu from './BaseMegaMenu.vue';
import MegaMenuSub from './MegaMenuSub.vue';
export default {
name: 'MegaMenu',
extends: BaseMegaMenu,
emits: ['focus', 'blur'],
outsideClickListener: null,
resizeListener: null,
container: null,
menubar: null,
searchTimeout: null,
searchValue: null,
data() {
return {
id: this.$attrs.id,
mobileActive: false,
focused: false,
focusedItemInfo: { index: -1, key: '', parentKey: '' },
activeItem: null,
dirty: false,
queryMatches: false
};
},
watch: {
'$attrs.id': function (newValue) {
this.id = newValue || UniqueComponentId();
},
activeItem(newItem) {
if (ObjectUtils.isNotEmpty(newItem)) {
this.bindOutsideClickListener();
this.bindResizeListener();
} else {
this.unbindOutsideClickListener();
this.unbindResizeListener();
}
}
},
mounted() {
this.id = this.id || UniqueComponentId();
const query = matchMedia(`(max-width: ${this.breakpoint})`);
this.queryMatches = query.matches;
query.addEventListener('change', () => {
this.queryMatches = query.matches;
});
},
beforeUnmount() {
this.mobileActive = false;
this.unbindOutsideClickListener();
this.unbindResizeListener();
},
methods: {
getItemProp(item, name) {
return item ? ObjectUtils.getItemValue(item[name]) : undefined;
},
getItemLabel(item) {
return this.getItemProp(item, 'label');
},
isItemDisabled(item) {
return this.getItemProp(item, 'disabled');
},
isItemGroup(item) {
return ObjectUtils.isNotEmpty(this.getItemProp(item, 'items'));
},
isItemSeparator(item) {
return this.getItemProp(item, 'separator');
},
getProccessedItemLabel(processedItem) {
return processedItem ? this.getItemLabel(processedItem.item) : undefined;
},
isProccessedItemGroup(processedItem) {
return processedItem && ObjectUtils.isNotEmpty(processedItem.items);
},
toggle(event) {
if (this.mobileActive) {
this.mobileActive = false;
ZIndexUtils.clear(this.menubar);
this.hide();
} else {
this.mobileActive = true;
ZIndexUtils.set('menu', this.menubar, this.$primevue.config.zIndex.menu);
setTimeout(() => {
this.show();
}, 1);
}
this.bindOutsideClickListener();
event.preventDefault();
},
show() {
this.focusedItemInfo = { index: this.findFirstFocusedItemIndex(), level: 0, parentKey: '' };
DomHandler.focus(this.menubar);
},
hide(event, isFocus) {
if (this.mobileActive) {
this.mobileActive = false;
setTimeout(() => {
DomHandler.focus(this.$refs.menubutton);
}, 0);
}
this.activeItem = null;
this.focusedItemInfo = { index: -1, key: '', parentKey: '' };
isFocus && DomHandler.focus(this.menubar);
this.dirty = false;
},
onFocus(event) {
this.focused = true;
if (this.focusedItemInfo.index === -1) {
const index = this.findFirstFocusedItemIndex();
const processedItem = this.findVisibleItem(index);
this.focusedItemInfo = { index, key: processedItem.key, parentKey: processedItem.parentKey };
}
this.$emit('focus', event);
},
onBlur(event) {
this.focused = false;
this.focusedItemInfo = { index: -1, key: '', parentKey: '' };
this.searchValue = '';
this.dirty = false;
this.$emit('blur', event);
},
onKeyDown(event) {
if (this.disabled) {
event.preventDefault();
return;
}
const metaKey = event.metaKey || event.ctrlKey;
switch (event.code) {
case 'ArrowDown':
this.onArrowDownKey(event);
break;
case 'ArrowUp':
this.onArrowUpKey(event);
break;
case 'ArrowLeft':
this.onArrowLeftKey(event);
break;
case 'ArrowRight':
this.onArrowRightKey(event);
break;
case 'Home':
this.onHomeKey(event);
break;
case 'End':
this.onEndKey(event);
break;
case 'Space':
this.onSpaceKey(event);
break;
case 'Enter':
this.onEnterKey(event);
break;
case 'Escape':
this.onEscapeKey(event);
break;
case 'Tab':
this.onTabKey(event);
break;
case 'PageDown':
case 'PageUp':
case 'Backspace':
case 'ShiftLeft':
case 'ShiftRight':
//NOOP
break;
default:
if (!metaKey && ObjectUtils.isPrintableCharacter(event.key)) {
this.searchItems(event, event.key);
}
break;
}
},
onItemChange(event) {
const { processedItem, isFocus } = event;
if (ObjectUtils.isEmpty(processedItem)) return;
const { index, key, parentKey, items } = processedItem;
const grouped = ObjectUtils.isNotEmpty(items);
grouped && (this.activeItem = processedItem);
this.focusedItemInfo = { index, key, parentKey };
grouped && (this.dirty = true);
isFocus && DomHandler.focus(this.menubar);
},
onItemClick(event) {
const { originalEvent, processedItem } = event;
const grouped = this.isProccessedItemGroup(processedItem);
const root = ObjectUtils.isEmpty(processedItem.parent);
const selected = this.isSelected(processedItem);
if (selected) {
const { index, key, parentKey } = processedItem;
this.activeItem = null;
this.focusedItemInfo = { index, key, parentKey };
this.dirty = !root;
DomHandler.focus(this.menubar);
} else {
if (grouped) {
this.onItemChange(event);
} else {
const rootProcessedItem = root ? processedItem : this.activeItem;
this.hide(originalEvent);
this.changeFocusedItemInfo(originalEvent, rootProcessedItem ? rootProcessedItem.index : -1);
this.mobileActive = false;
DomHandler.focus(this.menubar);
}
}
},
onItemMouseEnter(event) {
if (!this.mobileActive && this.dirty) {
this.onItemChange(event);
}
},
menuButtonClick(event) {
this.toggle(event);
},
menuButtonKeydown(event) {
(event.code === 'Enter' || event.code === 'Space') && this.menuButtonClick(event);
},
onArrowDownKey(event) {
if (this.horizontal) {
if (ObjectUtils.isNotEmpty(this.activeItem) && this.activeItem.key === this.focusedItemInfo.key) {
this.focusedItemInfo = { index: -1, key: '', parentKey: this.activeItem.key };
} else {
const processedItem = this.findVisibleItem(this.focusedItemInfo.index);
const grouped = this.isProccessedItemGroup(processedItem);
if (grouped) {
this.onItemChange({ originalEvent: event, processedItem });
this.focusedItemInfo = { index: -1, key: processedItem.key, parentKey: processedItem.parentKey };
this.searchValue = '';
}
}
}
const itemIndex = this.focusedItemInfo.index !== -1 ? this.findNextItemIndex(this.focusedItemInfo.index) : this.findFirstFocusedItemIndex();
this.changeFocusedItemInfo(event, itemIndex);
event.preventDefault();
},
onArrowUpKey(event) {
if (event.altKey && this.horizontal) {
if (this.focusedItemInfo.index !== -1) {
const processedItem = this.findVisibleItem(this.focusedItemInfo.index);
const grouped = this.isProccessedItemGroup(processedItem);
if (!grouped && ObjectUtils.isNotEmpty(this.activeItem)) {
if (this.focusedItemInfo.index === 0) {
this.focusedItemInfo = { index: this.activeItem.index, key: this.activeItem.key, parentKey: this.activeItem.parentKey };
this.activeItem = null;
} else {
this.changeFocusedItemInfo(event, this.findFirstItemIndex());
}
}
}
event.preventDefault();
} else {
const itemIndex = this.focusedItemInfo.index !== -1 ? this.findPrevItemIndex(this.focusedItemInfo.index) : this.findLastFocusedItemIndex();
this.changeFocusedItemInfo(event, itemIndex);
event.preventDefault();
}
},
onArrowLeftKey(event) {
const processedItem = this.findVisibleItem(this.focusedItemInfo.index);
const grouped = this.isProccessedItemGroup(processedItem);
if (grouped) {
if (this.horizontal) {
const itemIndex = this.focusedItemInfo.index !== -1 ? this.findPrevItemIndex(this.focusedItemInfo.index) : this.findLastFocusedItemIndex();
this.changeFocusedItemInfo(event, itemIndex);
}
} else {
if (this.vertical && ObjectUtils.isNotEmpty(this.activeItem)) {
if (processedItem.columnIndex === 0) {
this.focusedItemInfo = { index: this.activeItem.index, key: this.activeItem.key, parentKey: this.activeItem.parentKey };
this.activeItem = null;
}
}
const columnIndex = processedItem.columnIndex - 1;
const itemIndex = this.visibleItems.findIndex((item) => item.columnIndex === columnIndex);
itemIndex !== -1 && this.changeFocusedItemInfo(event, itemIndex);
}
event.preventDefault();
},
onArrowRightKey(event) {
const processedItem = this.findVisibleItem(this.focusedItemInfo.index);
const grouped = this.isProccessedItemGroup(processedItem);
if (grouped) {
if (this.vertical) {
if (ObjectUtils.isNotEmpty(this.activeItem) && this.activeItem.key === processedItem.key) {
this.focusedItemInfo = { index: -1, key: '', parentKey: this.activeItem.key };
} else {
const processedItem = this.findVisibleItem(this.focusedItemInfo.index);
const grouped = this.isProccessedItemGroup(processedItem);
if (grouped) {
this.onItemChange({ originalEvent: event, processedItem });
this.focusedItemInfo = { index: -1, key: processedItem.key, parentKey: processedItem.parentKey };
this.searchValue = '';
}
}
}
const itemIndex = this.focusedItemInfo.index !== -1 ? this.findNextItemIndex(this.focusedItemInfo.index) : this.findFirstFocusedItemIndex();
this.changeFocusedItemInfo(event, itemIndex);
} else {
const columnIndex = processedItem.columnIndex + 1;
const itemIndex = this.visibleItems.findIndex((item) => item.columnIndex === columnIndex);
itemIndex !== -1 && this.changeFocusedItemInfo(event, itemIndex);
}
event.preventDefault();
},
onHomeKey(event) {
this.changeFocusedItemInfo(event, this.findFirstItemIndex());
event.preventDefault();
},
onEndKey(event) {
this.changeFocusedItemInfo(event, this.findLastItemIndex());
event.preventDefault();
},
onEnterKey(event) {
if (this.focusedItemInfo.index !== -1) {
const element = DomHandler.findSingle(this.menubar, `li[id="${`${this.focusedItemId}`}"]`);
const anchorElement = element && DomHandler.findSingle(element, 'a[data-pc-section="action"]');
anchorElement ? anchorElement.click() : element && element.click();
const processedItem = this.visibleItems[this.focusedItemInfo.index];
const grouped = this.isProccessedItemGroup(processedItem);
!grouped && this.changeFocusedItemInfo(event, this.findFirstFocusedItemIndex());
}
event.preventDefault();
},
onSpaceKey(event) {
this.onEnterKey(event);
},
onEscapeKey(event) {
if (ObjectUtils.isNotEmpty(this.activeItem)) {
this.focusedItemInfo = { index: this.activeItem.index, key: this.activeItem.key };
this.activeItem = null;
}
event.preventDefault();
},
onTabKey(event) {
if (this.focusedItemInfo.index !== -1) {
const processedItem = this.findVisibleItem(this.focusedItemInfo.index);
const grouped = this.isProccessedItemGroup(processedItem);
!grouped && this.onItemChange({ originalEvent: event, processedItem });
}
this.hide();
},
bindOutsideClickListener() {
if (!this.outsideClickListener) {
this.outsideClickListener = (event) => {
const isOutsideContainer = this.container && !this.container.contains(event.target);
const isOutsideTarget = !(this.target && (this.target === event.target || this.target.contains(event.target)));
if (isOutsideContainer && isOutsideTarget) {
this.hide();
}
};
document.addEventListener('click', this.outsideClickListener);
}
},
unbindOutsideClickListener() {
if (this.outsideClickListener) {
document.removeEventListener('click', this.outsideClickListener);
this.outsideClickListener = null;
}
},
bindResizeListener() {
if (!this.resizeListener) {
this.resizeListener = (event) => {
if (!DomHandler.isTouchDevice()) {
this.hide(event, true);
}
this.mobileActive = false;
};
window.addEventListener('resize', this.resizeListener);
}
},
unbindResizeListener() {
if (this.resizeListener) {
window.removeEventListener('resize', this.resizeListener);
this.resizeListener = null;
}
},
isItemMatched(processedItem) {
return this.isValidItem(processedItem) && this.getProccessedItemLabel(processedItem).toLocaleLowerCase().startsWith(this.searchValue.toLocaleLowerCase());
},
isValidItem(processedItem) {
return !!processedItem && !this.isItemDisabled(processedItem.item) && !this.isItemSeparator(processedItem.item);
},
isValidSelectedItem(processedItem) {
return this.isValidItem(processedItem) && this.isSelected(processedItem);
},
isSelected(processedItem) {
return ObjectUtils.isNotEmpty(this.activeItem) ? this.activeItem.key === processedItem.key : false;
},
findFirstItemIndex() {
return this.visibleItems.findIndex((processedItem) => this.isValidItem(processedItem));
},
findLastItemIndex() {
return ObjectUtils.findLastIndex(this.visibleItems, (processedItem) => this.isValidItem(processedItem));
},
findNextItemIndex(index) {
const matchedItemIndex = index < this.visibleItems.length - 1 ? this.visibleItems.slice(index + 1).findIndex((processedItem) => this.isValidItem(processedItem)) : -1;
return matchedItemIndex > -1 ? matchedItemIndex + index + 1 : index;
},
findPrevItemIndex(index) {
const matchedItemIndex = index > 0 ? ObjectUtils.findLastIndex(this.visibleItems.slice(0, index), (processedItem) => this.isValidItem(processedItem)) : -1;
return matchedItemIndex > -1 ? matchedItemIndex : index;
},
findSelectedItemIndex() {
return this.visibleItems.findIndex((processedItem) => this.isValidSelectedItem(processedItem));
},
findFirstFocusedItemIndex() {
const selectedIndex = this.findSelectedItemIndex();
return selectedIndex < 0 ? this.findFirstItemIndex() : selectedIndex;
},
findLastFocusedItemIndex() {
const selectedIndex = this.findSelectedItemIndex();
return selectedIndex < 0 ? this.findLastItemIndex() : selectedIndex;
},
findVisibleItem(index) {
return ObjectUtils.isNotEmpty(this.visibleItems) ? this.visibleItems[index] : null;
},
searchItems(event, char) {
this.searchValue = (this.searchValue || '') + char;
let itemIndex = -1;
let matched = false;
if (this.focusedItemInfo.index !== -1) {
itemIndex = this.visibleItems.slice(this.focusedItemInfo.index).findIndex((processedItem) => this.isItemMatched(processedItem));
itemIndex = itemIndex === -1 ? this.visibleItems.slice(0, this.focusedItemInfo.index).findIndex((processedItem) => this.isItemMatched(processedItem)) : itemIndex + this.focusedItemInfo.index;
} else {
itemIndex = this.visibleItems.findIndex((processedItem) => this.isItemMatched(processedItem));
}
if (itemIndex !== -1) {
matched = true;
}
if (itemIndex === -1 && this.focusedItemInfo.index === -1) {
itemIndex = this.findFirstFocusedItemIndex();
}
if (itemIndex !== -1) {
this.changeFocusedItemInfo(event, itemIndex);
}
if (this.searchTimeout) {
clearTimeout(this.searchTimeout);
}
this.searchTimeout = setTimeout(() => {
this.searchValue = '';
this.searchTimeout = null;
}, 500);
return matched;
},
changeFocusedItemInfo(event, index) {
const processedItem = this.findVisibleItem(index);
this.focusedItemInfo.index = index;
this.focusedItemInfo.key = ObjectUtils.isNotEmpty(processedItem) ? processedItem.key : '';
this.scrollInView();
},
scrollInView(index = -1) {
const id = index !== -1 ? `${this.id}_${index}` : this.focusedItemId;
const element = DomHandler.findSingle(this.menubar, `li[id="${id}"]`);
if (element) {
element.scrollIntoView && element.scrollIntoView({ block: 'nearest', inline: 'start' });
}
},
createProcessedItems(items, level = 0, parent = {}, parentKey = '', columnIndex) {
const processedItems = [];
items &&
items.forEach((item, index) => {
const key = (parentKey !== '' ? parentKey + '_' : '') + (columnIndex !== undefined ? columnIndex + '_' : '') + index;
const newItem = {
item,
index,
level,
key,
parent,
parentKey,
columnIndex: columnIndex !== undefined ? columnIndex : parent.columnIndex !== undefined ? parent.columnIndex : index
};
newItem['items'] =
level === 0 && item.items && item.items.length > 0 ? item.items.map((_items, _index) => this.createProcessedItems(_items, level + 1, newItem, key, _index)) : this.createProcessedItems(item.items, level + 1, newItem, key);
processedItems.push(newItem);
});
return processedItems;
},
containerRef(el) {
this.container = el;
},
menubarRef(el) {
this.menubar = el ? el.$el : undefined;
}
},
computed: {
processedItems() {
return this.createProcessedItems(this.model || []);
},
visibleItems() {
const processedItem = ObjectUtils.isNotEmpty(this.activeItem) ? this.activeItem : null;
return processedItem && processedItem.key === this.focusedItemInfo.parentKey
? processedItem.items.reduce((items, col) => {
col.forEach((submenu) => {
submenu.items.forEach((a) => {
items.push(a);
});
});
return items;
}, [])
: this.processedItems;
},
horizontal() {
return this.orientation === 'horizontal';
},
vertical() {
return this.orientation === 'vertical';
},
focusedItemId() {
return ObjectUtils.isNotEmpty(this.focusedItemInfo.key) ? `${this.id}_${this.focusedItemInfo.key}` : null;
}
},
components: {
MegaMenuSub: MegaMenuSub,
BarsIcon: BarsIcon
}
};
</script>