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import { Component, forwardRef, Input, OnInit } from '@angular/core'
import { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms'
import 'rxjs/add/operator/debounceTime'
import 'rxjs/add/operator/distinctUntilChanged'
import { isInMobileView } from '@app/shared/misc/utils'
import { MarkdownService } from '@app/videos/shared'
import { Subject } from 'rxjs/Subject'
import truncate from 'lodash-es/truncate'
@Component({
selector: 'my-markdown-textarea',
templateUrl: './markdown-textarea.component.html',
styleUrls: [ './markdown-textarea.component.scss' ],
providers: [
{
provide: NG_VALUE_ACCESSOR,
useExisting: forwardRef(() => MarkdownTextareaComponent),
multi: true
}
]
})
export class MarkdownTextareaComponent implements ControlValueAccessor, OnInit {
@Input() description = ''
@Input() classes: string[] = []
@Input() textareaWidth = '100%'
@Input() textareaHeight = '150px'
@Input() previewColumn = false
@Input() truncate: number
textareaMarginRight = '0'
flexDirection = 'column'
truncatedDescriptionHTML = ''
descriptionHTML = ''
private descriptionChanged = new Subject<string>()
constructor (private markdownService: MarkdownService) {}
ngOnInit () {
this.descriptionChanged
.debounceTime(150)
.distinctUntilChanged()
.subscribe(() => this.updateDescriptionPreviews())
this.descriptionChanged.next(this.description)
if (this.previewColumn) {
this.flexDirection = 'row'
this.textareaMarginRight = '15px'
}
}
propagateChange = (_: any) => { /* empty */ }
writeValue (description: string) {
this.description = description
this.descriptionChanged.next(this.description)
}
registerOnChange (fn: (_: any) => void) {
this.propagateChange = fn
}
registerOnTouched () {
// Unused
}
onModelChange () {
this.propagateChange(this.description)
this.descriptionChanged.next(this.description)
}
arePreviewsDisplayed () {
return isInMobileView() === false
}
private updateDescriptionPreviews () {
if (this.description === null || this.description === undefined) return
this.truncatedDescriptionHTML = this.markdownService.markdownToHTML(truncate(this.description, { length: this.truncate }))
this.descriptionHTML = this.markdownService.markdownToHTML(this.description)
}
}
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