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import { defineAsyncComponent } from 'vue'
import Checkbox from '../checkbox/checkbox.vue'
import { library } from '@fortawesome/fontawesome-svg-core'
import {
faBoxOpen,
faStickyNote,
faSmileBeam
} from '@fortawesome/free-solid-svg-icons'
import { trim } from 'lodash'
library.add(
faBoxOpen,
faStickyNote,
faSmileBeam
)
// At widest, approximately 20 emoji are visible in a row,
// loading 3 rows, could be overkill for narrow picker
const LOAD_EMOJI_BY = 60
// When to start loading new batch emoji, in pixels
const LOAD_EMOJI_MARGIN = 64
const filterByKeyword = (list, keyword = '') => {
if (keyword === '') return list
const keywordLowercase = keyword.toLowerCase()
const orderedEmojiList = []
for (const emoji of list) {
const indexOfKeyword = emoji.displayText.toLowerCase().indexOf(keywordLowercase)
if (indexOfKeyword > -1) {
if (!Array.isArray(orderedEmojiList[indexOfKeyword])) {
orderedEmojiList[indexOfKeyword] = []
}
orderedEmojiList[indexOfKeyword].push(emoji)
}
}
return orderedEmojiList.flat()
}
const EmojiPicker = {
props: {
enableStickerPicker: {
required: false,
type: Boolean,
default: false
}
},
data () {
return {
keyword: '',
activeGroup: 'custom',
showingStickers: false,
groupsScrolledClass: 'scrolled-top',
keepOpen: false,
customEmojiBufferSlice: LOAD_EMOJI_BY,
customEmojiTimeout: null,
customEmojiLoadAllConfirmed: false,
groupLoadedCount: {},
firstLoaded: false
}
},
components: {
StickerPicker: defineAsyncComponent(() => import('../sticker_picker/sticker_picker.vue')),
Checkbox
},
methods: {
onStickerUploaded (e) {
this.$emit('sticker-uploaded', e)
},
onStickerUploadFailed (e) {
this.$emit('sticker-upload-failed', e)
},
onEmoji (emoji) {
const value = emoji.imageUrl ? `:${emoji.displayText}:` : emoji.replacement
this.$emit('emoji', { insertion: value, keepOpen: this.keepOpen })
},
onScroll (e) {
const target = (e && e.target) || this.$refs['emoji-groups']
this.updateScrolledClass(target)
this.scrolledGroup(target)
this.$nextTick(() => {
this.triggerLoadMore(target)
})
},
highlight (key) {
const ref = this.$refs['group-' + key]
const top = ref.offsetTop
this.setShowStickers(false)
this.activeGroup = key
this.$nextTick(() => {
this.$refs['emoji-groups'].scrollTop = top + 1
this.loadEmoji(key)
})
},
updateScrolledClass (target) {
if (target.scrollTop <= 5) {
this.groupsScrolledClass = 'scrolled-top'
} else if (target.scrollTop >= target.scrollTopMax - 5) {
this.groupsScrolledClass = 'scrolled-bottom'
} else {
this.groupsScrolledClass = 'scrolled-middle'
}
},
triggerLoadMore (target) {
Object.keys(this.allCustomGroups)
.filter(id => this.filteredEmojiGroups.filter(group => group.id === id).length > 0)
.map(groupId => {
const ref = this.$refs[`group-end-${groupId}`][0]
if (!ref) return undefined
const bottom = ref.offsetTop + ref.offsetHeight
const group = this.$refs[`group-${groupId}`][0]
const top = group.offsetTop
const scrollerBottom = target.scrollTop + target.clientHeight
const scrollerTop = target.scrollTop
const scrollerMax = target.scrollHeight
// Loads more emoji when they come into view
const approachingBottom = bottom - scrollerBottom < LOAD_EMOJI_MARGIN
// Always load when at the very top in case there's no scroll space yet
const atTop = scrollerTop < top + target.clientHeight / 2 && top < scrollerBottom
const unscrollable = top - bottom < target.clientHeight
// Don't load when looking at unicode category or at the very bottom
const bottomAboveViewport = bottom < scrollerTop || scrollerBottom === scrollerMax
if (!bottomAboveViewport && (approachingBottom || atTop || unscrollable)) {
return groupId
}
return undefined
})
.filter(k => k)
.map(k => {
this.loadEmoji(k)
})
},
scrolledGroup (target) {
const top = target.scrollTop + 5
this.$nextTick(() => {
this.allEmojiGroups.forEach(group => {
const ref = this.$refs['group-' + group.id]
if (ref.offsetTop <= top) {
this.activeGroup = group.id
}
})
})
},
loadEmoji (loadGroup) {
if (!this.allCustomGroups[loadGroup]) {
return
}
const allLoaded = this.loadedCount[loadGroup] >= this.allCustomGroups[loadGroup].emojis.length
if (allLoaded) {
return
}
this.groupLoadedCount = {
...this.groupLoadedCount,
[loadGroup]: this.loadedCount[loadGroup] + LOAD_EMOJI_BY
}
},
startEmojiLoad (forceUpdate = false) {
if (!forceUpdate) {
this.keyword = ''
}
this.$nextTick(() => {
this.$refs['emoji-groups'].scrollTop = 0
this.$nextTick(() => {
if (this.firstLoaded) {
return
}
this.triggerLoadMore(this.$refs['emoji-groups'])
this.firstLoaded = true
})
})
},
toggleStickers () {
this.showingStickers = !this.showingStickers
},
setShowStickers (value) {
this.showingStickers = value
},
limitedEmojis (list, groupId) {
return list.slice(0, this.loadedCount[groupId])
},
filterByKeyword (list, keyword) {
return filterByKeyword(list, keyword)
}
},
watch: {
keyword () {
this.customEmojiLoadAllConfirmed = false
this.onScroll()
this.startEmojiLoad(true)
}
},
computed: {
activeGroupView () {
return this.showingStickers ? '' : this.activeGroup
},
stickersAvailable () {
if (this.$store.state.instance.stickers) {
return this.$store.state.instance.stickers.length > 0
}
return 0
},
allCustomGroups () {
return this.$store.getters.groupedCustomEmojis
},
sensibleInitialAmountForAGroup () {
const groupCount = Object.keys(this.allCustomGroups).length
return Math.max(Math.floor(LOAD_EMOJI_BY / Math.max(groupCount, 1)), 1)
},
allEmojiGroups () {
const standardEmojis = this.$store.state.instance.emoji || []
return Object.entries(this.allCustomGroups)
.map(([_, v]) => v)
.concat({
id: 'standard',
text: this.$t('emoji.unicode'),
icon: 'box-open',
emojis: filterByKeyword(standardEmojis, this.keyword)
})
},
filteredEmojiGroups () {
return this.allEmojiGroups
.map(group => ({
...group,
emojis: filterByKeyword(group.emojis, this.keyword)
}))
.filter(group => group.emojis.length > 0)
},
loadedCount () {
return Object.keys(this.allCustomGroups)
.reduce((res, groupId) => {
res[groupId] = this.groupLoadedCount[groupId] || this.sensibleInitialAmountForAGroup
return res
}, {})
},
lastNonUnicodeGroupId () {
return this.emojis[this.emojis.length - 2].id
},
stickerPickerEnabled () {
return (this.$store.state.instance.stickers || []).length !== 0
}
}
}
export default EmojiPicker
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