b673a49af6
* channel configuration: adding title to inputs. * channel configuration: `aria-hidden="true"` on icons for add and remove row buttons.
105 lines
3.4 KiB
TypeScript
105 lines
3.4 KiB
TypeScript
// SPDX-FileCopyrightText: 2024 John Livingston <https://www.john-livingston.fr/>
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//
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// SPDX-License-Identifier: AGPL-3.0-only
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import { LivechatElement } from './livechat'
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import { html } from 'lit'
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import type { DirectiveResult } from 'lit/directive'
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import { customElement, property } from 'lit/decorators.js'
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import { ifDefined } from 'lit/directives/if-defined.js'
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/**
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* Special element to upload image files.
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* If no current value, displays an input type="file" field.
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* When there is already an image, it is displayed.
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* Clicking on the image triggers a new upload, that will replace the image.
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*
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* The value can be either:
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* * an url (when the image is already saved for example)
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* * a base64 representation (for image to upload for exemple)
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*
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* Doing so, we just have to set the img.src to the value to display the image.
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*/
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@customElement('livechat-image-file-input')
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export class ImageFileInputElement extends LivechatElement {
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@property({ attribute: false })
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public name?: string
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@property({ reflect: true })
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public value: string | undefined
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@property({ attribute: false })
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public maxSize?: number
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@property({ attribute: false })
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public inputTitle?: string | DirectiveResult
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@property({ attribute: false })
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public accept: string[] = ['image/jpg', 'image/png', 'image/gif']
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protected override render = (): unknown => {
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return html`
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${this.value
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? html`<img src=${this.value} alt=${ifDefined(this.inputTitle)} @click=${(ev: Event) => {
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ev.preventDefault()
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const upload: HTMLInputElement | null | undefined = this.parentElement?.querySelector('input[type="file"]')
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upload?.click()
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}} />`
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: ''
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}
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<input
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type="file"
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title=${ifDefined(this.inputTitle)}
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accept="${this.accept.join(',')}"
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class="form-control"
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style=${this.value ? 'display: none;' : ''}
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@change=${async (ev: Event) => this._upload(ev)}
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/>
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`
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}
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private async _upload (ev: Event): Promise<void> {
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ev.preventDefault()
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ev.stopImmediatePropagation() // we dont want to propage the change from the input field, only from the hidden field
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const target = ev.target
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const file = (target as HTMLInputElement).files?.[0]
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if (!file) {
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return
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}
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if (this.maxSize && file.size > this.maxSize) {
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let msg = await this.ptTranslate(LOC_INVALID_VALUE_FILE_TOO_BIG)
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if (msg) {
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// FIXME: better unit handling (here we force kb)
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msg = msg.replace('%s', Math.round(this.maxSize / 1024).toString() + 'k')
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this.ptNotifier.error(msg)
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}
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return
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}
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try {
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const base64 = await new Promise<string>((resolve, reject) => {
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const fileReader = new FileReader()
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fileReader.onload = () => {
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if (fileReader.result === null) {
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reject(new Error('Empty result'))
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return
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}
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if (fileReader.result instanceof ArrayBuffer) {
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reject(new Error('Result is an ArrayBuffer, this was not intended'))
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} else {
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resolve(fileReader.result)
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}
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}
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fileReader.onerror = reject
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fileReader.readAsDataURL(file)
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})
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this.value = base64
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const event = new Event('change')
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this.dispatchEvent(event)
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} catch (err) {
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// FIXME: use peertube notifier?
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this.logger.error(err)
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}
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}
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}
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