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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 { isInSmallView } 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() content = ''
@Input() classes: string[] = []
@Input() textareaWidth = '100%'
@Input() textareaHeight = '150px'
@Input() previewColumn = false
@Input() truncate: number
@Input() markdownType: 'text' | 'enhanced' = 'text'
textareaMarginRight = '0'
flexDirection = 'column'
truncatedPreviewHTML = ''
previewHTML = ''
private contentChanged = new Subject<string>()
constructor (private markdownService: MarkdownService) {}
ngOnInit () {
this.contentChanged
.debounceTime(150)
.distinctUntilChanged()
.subscribe(() => this.updatePreviews())
this.contentChanged.next(this.content)
if (this.previewColumn) {
this.flexDirection = 'row'
this.textareaMarginRight = '15px'
}
}
propagateChange = (_: any) => { /* empty */ }
writeValue (description: string) {
this.content = description
this.contentChanged.next(this.content)
}
registerOnChange (fn: (_: any) => void) {
this.propagateChange = fn
}
registerOnTouched () {
// Unused
}
onModelChange () {
this.propagateChange(this.content)
this.contentChanged.next(this.content)
}
arePreviewsDisplayed () {
return isInSmallView() === false
}
private updatePreviews () {
if (this.content === null || this.content === undefined) return
this.truncatedPreviewHTML = this.markdownRender(truncate(this.content, { length: this.truncate }))
this.previewHTML = this.markdownRender(this.content)
}
private markdownRender (text: string) {
if (this.markdownType === 'text') return this.markdownService.textMarkdownToHTML(text)
return this.markdownService.enhancedMarkdownToHTML(text)
}
}
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