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[ユースケースビルダー]ファイルのコピー&ペースト、ドラッグ&ドロップの導入 #851

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Jan 29, 2025
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Original file line number Diff line number Diff line change
Expand Up @@ -166,6 +166,7 @@ const UseCaseBuilderView: React.FC<Props> = (props) => {
errorMessages: fileErrorMessages,
clear: clearFiles,
} = useFiles();
const [isOver, setIsOver] = useState(false);

const [errorMessages, setErrorMessages] = useState<string[]>([]);

Expand Down Expand Up @@ -400,8 +401,57 @@ const UseCaseBuilderView: React.FC<Props> = (props) => {
[deleteUploadedFile, accept]
);

const handleDragOver = (event: React.DragEvent) => {
// ファイルドラッグ時にオーバーレイを表示
event.preventDefault();
setIsOver(true);
};

const handleDragLeave = (event: React.DragEvent) => {
// ファイルドラッグ時にオーバーレイを非表示
event.preventDefault();
setIsOver(false);
};

const handleDrop = (event: React.DragEvent) => {
// ファイルドロップ時にファイルを追加
event.preventDefault();
setIsOver(false);
if (event.dataTransfer.files) {
// ファイルを反映しアップロード
uploadFiles(Array.from(event.dataTransfer.files), fileLimit, accept);
}
};

const handlePaste = async (pasteEvent: React.ClipboardEvent) => {
const fileList = pasteEvent.clipboardData.items || [];
const files = Array.from(fileList)
.filter((file) => file.kind === 'file')
.map((file) => file.getAsFile() as File);
if (files.length > 0 && fileLimit && accept) {
// ファイルをアップロード
uploadFiles(Array.from(files), fileLimit, accept);
// ファイルの場合ファイル名もペーストされるためデフォルトの挙動を止める
pasteEvent.preventDefault();
}
// ファイルがない場合はデフォルトの挙動(テキストのペースト)
};

return (
<div>
<div
onDragOver={props.fileUpload ? handleDragOver : undefined}
onDragLeave={props.fileUpload ? handleDragLeave : undefined}
onPaste={props.fileUpload ? handlePaste : undefined}
className="relative">
{isOver && props.fileUpload && (
<div
onDrop={handleDrop}
className="absolute inset-0 z-[999] bg-slate-300 p-10 text-center">
<div className="flex h-full w-full items-center justify-center outline-dashed">
<div className="font-bold">ファイルをドロップしてアップロード</div>
</div>
</div>
)}
<div className="mb-4 flex flex-col-reverse text-xl font-semibold md:flex-row">
{!props.previewMode && <div className="flex-1" />}
<div
Expand Down