pinafore/routes/_components/compose/ComposeInput.html

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<textarea
class="compose-box-input"
placeholder="What's on your mind?"
ref:textarea
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bind:value=rawText
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on:blur="onBlur()"
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on:focus="onFocus()"
on:selectionChange="onSelectionChange(event)"
on:keydown="onKeydown(event)"
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></textarea>
<style>
.compose-box-input {
grid-area: input;
margin: 10px 0 0 5px;
padding: 10px;
border: 1px solid var(--input-border);
min-height: 75px;
resize: none;
overflow: hidden;
word-wrap: break-word;
/* Text must be at least 16px or else iOS Safari zooms in */
font-size: 1.2em;
/* Hack to make Edge stretch the element all the way to the right.
* Also desktop Safari makes the gauge stretch too far to the right without it.
*/
width: calc(100% - 5px);
}
</style>
<script>
import { store } from '../../_store/store'
import { autosize } from '../../_utils/autosize'
import { scheduleIdleTask } from '../../_utils/scheduleIdleTask'
import debounce from 'lodash-es/debounce'
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import { mark, stop } from '../../_utils/marks'
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import { selectionChange } from '../../_utils/events'
import { clickSelectedAutosuggestionUsername } from '../../_actions/compose'
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import { clickSelectedAutosuggestionEmoji } from '../../_actions/emoji'
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export default {
oncreate() {
this.setupSyncFromStore()
this.setupSyncToStore()
this.setupAutosize()
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},
ondestroy() {
this.teardownAutosize()
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},
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methods: {
setupSyncFromStore() {
let textarea = this.refs.textarea
let firstTime = true
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this.observe('text', text => {
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if (this.get('rawText') !== text) {
this.set({rawText: text})
// this next autosize is required to resize after
// the user clicks the "toot" button
mark('autosize.update()')
autosize.update(textarea)
stop('autosize.update()')
}
if (firstTime) {
firstTime = false
if (this.get('autoFocus')) {
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requestAnimationFrame(() => textarea.focus())
}
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}
})
},
setupSyncToStore() {
const saveText = debounce(() => scheduleIdleTask(() => this.store.save()), 1000)
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this.observe('rawText', rawText => {
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mark('observe rawText')
let realm = this.get('realm')
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this.store.setComposeData(realm, {text: rawText})
saveText()
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stop('observe rawText')
}, {init: false})
},
setupAutosize() {
let textarea = this.refs.textarea
requestAnimationFrame(() => {
mark('autosize()')
autosize(textarea)
stop('autosize()')
})
},
teardownAutosize() {
mark('autosize.destroy()')
autosize.destroy(this.refs.textarea)
stop('autosize.destroy()')
},
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onBlur() {
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this.store.set({composeFocused: false})
},
onFocus() {
this.store.set({composeFocused: true})
},
onSelectionChange(selectionStart) {
this.store.set({composeSelectionStart: selectionStart})
},
onKeydown(e) {
let { keyCode } = e
switch (keyCode) {
case 9: // tab
case 13: //enter
this.clickSelectedAutosuggestion(e)
break
case 38: // up
this.incrementAutosuggestSelected(-1, e)
break
case 40: // down
this.incrementAutosuggestSelected(1, e)
break
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case 27: // escape
this.clearAutosuggestions(e)
break
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default:
}
},
clickSelectedAutosuggestion(event) {
let autosuggestionShown = this.store.get('composeAutosuggestionShown')
if (!autosuggestionShown) {
return
}
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let type = this.store.get('composeAutosuggestionType')
if (type === 'account') {
/* no await */ clickSelectedAutosuggestionUsername(this.get('realm'))
} else { // emoji
/* no await */ clickSelectedAutosuggestionEmoji(this.get('realm'))
}
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event.preventDefault()
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event.stopPropagation()
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},
incrementAutosuggestSelected(increment, event) {
let autosuggestionShown = this.store.get('composeAutosuggestionShown')
if (!autosuggestionShown) {
return
}
let selected = this.store.get('composeAutosuggestionSelected') || 0
let searchResults = this.store.get('composeAutosuggestionSearchResults') || []
selected += increment
if (selected >= 0) {
selected = selected % searchResults.length
} else {
selected = searchResults.length + selected
}
this.store.set({composeAutosuggestionSelected: selected})
event.preventDefault()
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event.stopPropagation()
},
clearAutosuggestions(event) {
let autosuggestionShown = this.store.get('composeAutosuggestionShown')
if (!autosuggestionShown) {
return
}
this.store.set({
composeAutosuggestionSearchResults: [],
composeAutosuggestionSelected: 0
})
event.preventDefault()
event.stopPropagation()
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}
},
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store: () => store,
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data: () => ({
rawText: ''
}),
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events: {
selectionChange
}
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}
</script>