510 lines
16 KiB
JavaScript
510 lines
16 KiB
JavaScript
import Completion from '../../services/completion/completion.js'
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import EmojiPicker from '../emoji_picker/emoji_picker.vue'
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import { take } from 'lodash'
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import { findOffset } from '../../services/offset_finder/offset_finder.service.js'
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import { library } from '@fortawesome/fontawesome-svg-core'
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import {
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faSmileBeam
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} from '@fortawesome/free-regular-svg-icons'
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library.add(
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faSmileBeam
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)
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/**
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* EmojiInput - augmented inputs for emoji and autocomplete support in inputs
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* without having to give up the comfort of <input/> and <textarea/> elements
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*
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* Intended usage is:
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* <EmojiInput v-model="something">
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* <input v-model="something"/>
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* </EmojiInput>
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*
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* Works only with <input> and <textarea>. Intended to use with only one nested
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* input. It will find first input or textarea and work with that, multiple
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* nested children not tested. You HAVE TO duplicate v-model for both
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* <emoji-input> and <input>/<textarea> otherwise it will not work.
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*
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* Be prepared for CSS troubles though because it still wraps component in a div
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* while TRYING to make it look like nothing happened, but it could break stuff.
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*/
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const EmojiInput = {
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emits: ['update:modelValue', 'shown'],
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props: {
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suggest: {
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/**
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* suggest: function (input: String) => Suggestion[]
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*
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* Function that takes input string which takes string (textAtCaret)
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* and returns an array of Suggestions
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*
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* Suggestion is an object containing following properties:
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* displayText: string. Main display text, what actual suggestion
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* represents (user's screen name/emoji shortcode)
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* replacement: string. Text that should replace the textAtCaret
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* detailText: string, optional. Subtitle text, providing additional info
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* if present (user's nickname)
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* imageUrl: string, optional. Image to display alongside with suggestion,
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* currently if no image is provided, replacement will be used (for
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* unicode emojis)
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*
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* TODO: make it asynchronous when adding proper server-provided user
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* suggestions
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*
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* For commonly used suggestors (emoji, users, both) use suggestor.js
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*/
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required: true,
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type: Function
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},
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modelValue: {
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/**
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* Used for v-model
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*/
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required: true,
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type: String
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},
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enableEmojiPicker: {
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/**
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* Enables emoji picker support, this implies that custom emoji are supported
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*/
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required: false,
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type: Boolean,
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default: false
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},
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hideEmojiButton: {
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/**
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* intended to use with external picker trigger, i.e. you have a button outside
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* input that will open up the picker, see triggerShowPicker()
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*/
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required: false,
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type: Boolean,
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default: false
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},
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enableStickerPicker: {
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/**
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* Enables sticker picker support, only makes sense when enableEmojiPicker=true
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*/
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required: false,
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type: Boolean,
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default: false
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},
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placement: {
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/**
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* Forces the panel to take a specific position relative to the input element.
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* The 'auto' placement chooses either bottom or top depending on which has the available space (when both have available space, bottom is preferred).
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*/
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required: false,
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type: String, // 'auto', 'top', 'bottom'
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default: 'auto'
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},
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newlineOnCtrlEnter: {
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required: false,
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type: Boolean,
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default: false
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}
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},
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data () {
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return {
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input: undefined,
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highlighted: 0,
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caret: 0,
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focused: false,
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blurTimeout: null,
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showPicker: false,
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temporarilyHideSuggestions: false,
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keepOpen: false,
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disableClickOutside: false,
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suggestions: []
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}
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},
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components: {
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EmojiPicker
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},
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computed: {
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padEmoji () {
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return this.$store.getters.mergedConfig.padEmoji
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},
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showSuggestions () {
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return this.focused &&
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this.suggestions &&
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this.suggestions.length > 0 &&
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!this.showPicker &&
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!this.temporarilyHideSuggestions
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},
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textAtCaret () {
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return (this.wordAtCaret || {}).word || ''
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},
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wordAtCaret () {
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if (this.modelValue && this.caret) {
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const word = Completion.wordAtPosition(this.modelValue, this.caret - 1) || {}
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return word
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}
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}
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},
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mounted () {
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const { root } = this.$refs
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const input = root.querySelector('.emoji-input > input') || root.querySelector('.emoji-input > textarea')
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if (!input) return
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this.input = input
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this.resize()
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input.addEventListener('blur', this.onBlur)
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input.addEventListener('focus', this.onFocus)
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input.addEventListener('paste', this.onPaste)
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input.addEventListener('keyup', this.onKeyUp)
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input.addEventListener('keydown', this.onKeyDown)
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input.addEventListener('click', this.onClickInput)
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input.addEventListener('transitionend', this.onTransition)
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input.addEventListener('input', this.onInput)
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},
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unmounted () {
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const { input } = this
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if (input) {
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input.removeEventListener('blur', this.onBlur)
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input.removeEventListener('focus', this.onFocus)
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input.removeEventListener('paste', this.onPaste)
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input.removeEventListener('keyup', this.onKeyUp)
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input.removeEventListener('keydown', this.onKeyDown)
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input.removeEventListener('click', this.onClickInput)
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input.removeEventListener('transitionend', this.onTransition)
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input.removeEventListener('input', this.onInput)
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}
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},
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watch: {
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showSuggestions: function (newValue) {
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this.$emit('shown', newValue)
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},
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textAtCaret: async function (newWord) {
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const firstchar = newWord.charAt(0)
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this.suggestions = []
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if (newWord === firstchar) return
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const matchedSuggestions = await this.suggest(newWord)
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// Async: cancel if textAtCaret has changed during wait
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if (this.textAtCaret !== newWord) return
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if (matchedSuggestions.length <= 0) return
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this.suggestions = take(matchedSuggestions, 5)
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.map(({ imageUrl, ...rest }) => ({
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...rest,
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img: imageUrl || ''
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}))
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},
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suggestions: {
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handler (newValue) {
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this.$nextTick(this.resize)
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},
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deep: true
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}
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},
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methods: {
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focusPickerInput () {
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const pickerEl = this.$refs.picker.$el
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if (!pickerEl) return
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const pickerInput = pickerEl.querySelector('input')
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if (pickerInput) pickerInput.focus()
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},
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triggerShowPicker () {
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this.showPicker = true
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this.$refs.picker.startEmojiLoad()
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this.$nextTick(() => {
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this.scrollIntoView()
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this.focusPickerInput()
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})
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// This temporarily disables "click outside" handler
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// since external trigger also means click originates
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// from outside, thus preventing picker from opening
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this.disableClickOutside = true
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setTimeout(() => {
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this.disableClickOutside = false
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}, 0)
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},
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togglePicker () {
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this.input.focus()
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this.showPicker = !this.showPicker
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if (this.showPicker) {
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this.scrollIntoView()
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this.$refs.picker.startEmojiLoad()
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this.$nextTick(this.focusPickerInput)
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}
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},
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replace (replacement) {
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const newValue = Completion.replaceWord(this.modelValue, this.wordAtCaret, replacement)
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this.$emit('update:modelValue', newValue)
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this.caret = 0
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},
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insert ({ insertion, keepOpen, surroundingSpace = true }) {
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const before = this.modelValue.substring(0, this.caret) || ''
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const after = this.modelValue.substring(this.caret) || ''
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/* Using a bit more smart approach to padding emojis with spaces:
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* - put a space before cursor if there isn't one already, unless we
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* are at the beginning of post or in spam mode
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* - put a space after emoji if there isn't one already unless we are
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* in spam mode
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*
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* The idea is that when you put a cursor somewhere in between sentence
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* inserting just ' :emoji: ' will add more spaces to post which might
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* break the flow/spacing, as well as the case where user ends sentence
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* with a space before adding emoji.
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*
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* Spam mode is intended for creating multi-part emojis and overall spamming
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* them, masto seem to be rendering :emoji::emoji: correctly now so why not
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*/
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const isSpaceRegex = /\s/
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const spaceBefore = (surroundingSpace && !isSpaceRegex.exec(before.slice(-1)) && before.length && this.padEmoji > 0) ? ' ' : ''
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const spaceAfter = (surroundingSpace && !isSpaceRegex.exec(after[0]) && this.padEmoji) ? ' ' : ''
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const newValue = [
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before,
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spaceBefore,
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insertion,
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spaceAfter,
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after
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].join('')
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this.keepOpen = keepOpen
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this.$emit('update:modelValue', newValue)
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const position = this.caret + (insertion + spaceAfter + spaceBefore).length
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if (!keepOpen) {
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this.input.focus()
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}
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this.$nextTick(function () {
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// Re-focus inputbox after clicking suggestion
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// Set selection right after the replacement instead of the very end
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this.input.setSelectionRange(position, position)
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this.caret = position
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})
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},
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replaceText (e, suggestion) {
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const len = this.suggestions.length || 0
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if (this.textAtCaret.length === 1) { return }
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if (len > 0 || suggestion) {
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const chosenSuggestion = suggestion || this.suggestions[this.highlighted]
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const replacement = chosenSuggestion.replacement
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const newValue = Completion.replaceWord(this.modelValue, this.wordAtCaret, replacement)
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this.$emit('update:modelValue', newValue)
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this.highlighted = 0
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const position = this.wordAtCaret.start + replacement.length
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this.$nextTick(function () {
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// Re-focus inputbox after clicking suggestion
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this.input.focus()
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// Set selection right after the replacement instead of the very end
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this.input.setSelectionRange(position, position)
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this.caret = position
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})
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e.preventDefault()
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}
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},
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cycleBackward (e) {
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const len = this.suggestions.length || 0
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if (len > 1) {
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this.highlighted -= 1
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if (this.highlighted < 0) {
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this.highlighted = this.suggestions.length - 1
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}
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e.preventDefault()
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} else {
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this.highlighted = 0
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}
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},
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cycleForward (e) {
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const len = this.suggestions.length || 0
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if (len > 1) {
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this.highlighted += 1
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if (this.highlighted >= len) {
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this.highlighted = 0
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}
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e.preventDefault()
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} else {
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this.highlighted = 0
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}
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},
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scrollIntoView () {
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const rootRef = this.$refs['picker'].$el
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/* Scroller is either `window` (replies in TL), sidebar (main post form,
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* replies in notifs) or mobile post form. Note that getting and setting
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* scroll is different for `Window` and `Element`s
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*/
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const scrollerRef = this.$el.closest('.sidebar-scroller') ||
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this.$el.closest('.post-form-modal-view') ||
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window
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const currentScroll = scrollerRef === window
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? scrollerRef.scrollY
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: scrollerRef.scrollTop
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const scrollerHeight = scrollerRef === window
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? scrollerRef.innerHeight
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: scrollerRef.offsetHeight
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const scrollerBottomBorder = currentScroll + scrollerHeight
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// We check where the bottom border of root element is, this uses findOffset
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// to find offset relative to scrollable container (scroller)
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const rootBottomBorder = rootRef.offsetHeight + findOffset(rootRef, scrollerRef).top
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const bottomDelta = Math.max(0, rootBottomBorder - scrollerBottomBorder)
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// could also check top delta but there's no case for it
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const targetScroll = currentScroll + bottomDelta
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if (scrollerRef === window) {
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scrollerRef.scroll(0, targetScroll)
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} else {
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scrollerRef.scrollTop = targetScroll
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}
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this.$nextTick(() => {
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const { offsetHeight } = this.input
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const { picker } = this.$refs
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const pickerBottom = picker.$el.getBoundingClientRect().bottom
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if (pickerBottom > window.innerHeight) {
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picker.$el.style.top = 'auto'
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picker.$el.style.bottom = offsetHeight + 'px'
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}
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})
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},
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onTransition (e) {
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this.resize()
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},
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onBlur (e) {
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// Clicking on any suggestion removes focus from autocomplete,
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// preventing click handler ever executing.
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this.blurTimeout = setTimeout(() => {
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this.focused = false
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this.setCaret(e)
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this.resize()
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}, 200)
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},
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onClick (e, suggestion) {
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this.replaceText(e, suggestion)
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},
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onFocus (e) {
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if (this.blurTimeout) {
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clearTimeout(this.blurTimeout)
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this.blurTimeout = null
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}
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if (!this.keepOpen) {
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this.showPicker = false
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}
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this.focused = true
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this.setCaret(e)
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this.resize()
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this.temporarilyHideSuggestions = false
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},
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onKeyUp (e) {
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const { key } = e
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this.setCaret(e)
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this.resize()
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// Setting hider in keyUp to prevent suggestions from blinking
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// when moving away from suggested spot
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if (key === 'Escape') {
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this.temporarilyHideSuggestions = true
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} else {
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this.temporarilyHideSuggestions = false
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}
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},
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onPaste (e) {
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this.setCaret(e)
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this.resize()
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},
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onKeyDown (e) {
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const { ctrlKey, shiftKey, key } = e
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if (this.newlineOnCtrlEnter && ctrlKey && key === 'Enter') {
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this.insert({ insertion: '\n', surroundingSpace: false })
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// Ensure only one new line is added on macos
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e.stopPropagation()
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e.preventDefault()
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// Scroll the input element to the position of the cursor
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this.$nextTick(() => {
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this.input.blur()
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this.input.focus()
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})
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}
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// Disable suggestions hotkeys if suggestions are hidden
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if (!this.temporarilyHideSuggestions) {
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if (key === 'Tab') {
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if (shiftKey) {
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this.cycleBackward(e)
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} else {
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this.cycleForward(e)
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}
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}
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if (key === 'ArrowUp') {
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this.cycleBackward(e)
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} else if (key === 'ArrowDown') {
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this.cycleForward(e)
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}
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if (key === 'Enter') {
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if (!ctrlKey) {
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this.replaceText(e)
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}
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}
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}
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// Probably add optional keyboard controls for emoji picker?
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// Escape hides suggestions, if suggestions are hidden it
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// de-focuses the element (i.e. default browser behavior)
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if (key === 'Escape') {
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if (!this.temporarilyHideSuggestions) {
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this.input.focus()
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}
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}
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this.showPicker = false
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this.resize()
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},
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onInput (e) {
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this.showPicker = false
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this.setCaret(e)
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this.resize()
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this.$emit('update:modelValue', e.target.value)
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},
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onClickInput (e) {
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this.showPicker = false
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},
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onClickOutside (e) {
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if (this.disableClickOutside) return
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this.showPicker = false
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},
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onStickerUploaded (e) {
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this.showPicker = false
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this.$emit('sticker-uploaded', e)
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},
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onStickerUploadFailed (e) {
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this.showPicker = false
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this.$emit('sticker-upload-Failed', e)
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},
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setCaret ({ target: { selectionStart } }) {
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this.caret = selectionStart
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},
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resize () {
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const panel = this.$refs.panel
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if (!panel) return
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const picker = this.$refs.picker.$el
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const panelBody = this.$refs['panel-body']
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const { offsetHeight, offsetTop } = this.input
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const offsetBottom = offsetTop + offsetHeight
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this.setPlacement(panelBody, panel, offsetBottom)
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this.setPlacement(picker, picker, offsetBottom)
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},
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setPlacement (container, target, offsetBottom) {
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if (!container || !target) return
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target.style.top = offsetBottom + 'px'
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target.style.bottom = 'auto'
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if (this.placement === 'top' || (this.placement === 'auto' && this.overflowsBottom(container))) {
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target.style.top = 'auto'
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target.style.bottom = this.input.offsetHeight + 'px'
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}
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},
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overflowsBottom (el) {
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return el.getBoundingClientRect().bottom > window.innerHeight
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}
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}
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}
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export default EmojiInput
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