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Diffstat (limited to 'packages/demobank-ui/src/components/fields/FileInput.tsx')
-rw-r--r-- | packages/demobank-ui/src/components/fields/FileInput.tsx | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/packages/demobank-ui/src/components/fields/FileInput.tsx b/packages/demobank-ui/src/components/fields/FileInput.tsx new file mode 100644 index 000000000..17413b907 --- /dev/null +++ b/packages/demobank-ui/src/components/fields/FileInput.tsx @@ -0,0 +1,104 @@ +/* + This file is part of GNU Taler + (C) 2021 Taler Systems S.A. + + GNU Taler is free software; you can redistribute it and/or modify it under the + terms of the GNU General Public License as published by the Free Software + Foundation; either version 3, or (at your option) any later version. + + GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY + WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR + A PARTICULAR PURPOSE. See the GNU General Public License for more details. + + You should have received a copy of the GNU General Public License along with + GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/> + */ + +/** + * + * @author Sebastian Javier Marchano (sebasjm) + */ +import { h, VNode } from 'preact'; +import { useLayoutEffect, useRef, useState } from 'preact/hooks'; + +const MAX_IMAGE_UPLOAD_SIZE = 1024 * 1024; + +export interface FileTypeContent { + content: string; + type: string; + name: string; +} + +export interface FileInputProps { + label: string; + grabFocus?: boolean; + disabled?: boolean; + error?: string; + placeholder?: string; + tooltip?: string; + onChange: (v: FileTypeContent | undefined) => void; +} + +export function FileInput(props: FileInputProps): VNode { + const inputRef = useRef<HTMLInputElement>(null); + useLayoutEffect(() => { + if (props.grabFocus) + inputRef.current?.focus(); + + }, [props.grabFocus]); + + const fileInputRef = useRef<HTMLInputElement>(null); + const [sizeError, setSizeError] = useState(false); + return ( + <div class="field"> + <label class="label"> + <a class="button" onClick={(e) => fileInputRef.current?.click()}> + <div class="icon is-small "> + <i class="mdi mdi-folder" /> + </div> + <span> + {props.label} + </span> + </a> + {props.tooltip && ( + <span class="icon has-tooltip-right" data-tooltip={props.tooltip}> + <i class="mdi mdi-information" /> + </span> + )} + </label> + <div class="control"> + <input + ref={fileInputRef} + style={{ display: 'none' }} + type="file" + // name={String(name)} + onChange={(e) => { + const f: FileList | null = e.currentTarget.files; + if (!f || f.length != 1) + return props.onChange(undefined); + + console.log(f) + if (f[0].size > MAX_IMAGE_UPLOAD_SIZE) { + setSizeError(true); + return props.onChange(undefined); + } + setSizeError(false); + return f[0].arrayBuffer().then((b) => { + const b64 = btoa( + new Uint8Array(b).reduce( + (data, byte) => data + String.fromCharCode(byte), + '', + ), + ); + return props.onChange({content: `data:${f[0].type};base64,${b64}`, name: f[0].name, type: f[0].type}); + }); + }} + /> + {props.error && <p class="help is-danger">{props.error}</p>} + {sizeError && ( + <p class="help is-danger">File should be smaller than 1 MB</p> + )} + </div> + </div> + ); +} |