72 lines
2.4 KiB
TypeScript
72 lines
2.4 KiB
TypeScript
export interface MentionImageOption {
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id: string;
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src: string;
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name: string;
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label?: string;
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}
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export function getImageMentionQuery(value: string, selectionStart: number | null | undefined): string | null {
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if (selectionStart === null || selectionStart === undefined) return null;
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const beforeCursor = value.slice(0, selectionStart);
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const match = beforeCursor.match(/(?:^|\s)@([^\s@]*)$/);
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return match ? match[1] ?? "" : null;
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}
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export function insertImageMentionValue(
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value: string,
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selectionStart: number,
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imageName: string,
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maxLength: number,
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): { value: string; selectionStart: number } {
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const beforeCursor = value.slice(0, selectionStart);
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const afterCursor = value.slice(selectionStart);
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const match = beforeCursor.match(/(?:^|\s)@([^\s@]*)$/);
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const mentionStart = match ? beforeCursor.length - match[0].length + (match[0].startsWith("@") ? 0 : 1) : selectionStart;
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const mentionText = `@${imageName.trim() || "uploaded-image"} `;
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const nextValue = `${value.slice(0, mentionStart)}${mentionText}${afterCursor}`.slice(0, maxLength);
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const nextSelectionStart = Math.min(mentionStart + mentionText.length, nextValue.length);
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return { value: nextValue, selectionStart: nextSelectionStart };
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}
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interface ImageMentionMenuProps {
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images: MentionImageOption[];
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query?: string;
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onSelect: (image: MentionImageOption) => void;
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}
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function ImageMentionMenu({ images, query = "", onSelect }: ImageMentionMenuProps) {
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const normalizedQuery = query.trim().toLowerCase();
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const visibleImages = normalizedQuery
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? images.filter((image) => `${image.label ?? ""} ${image.name}`.toLowerCase().includes(normalizedQuery))
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: images;
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return (
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<div className="image-mention-menu" role="listbox" aria-label="选择上传图片">
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{visibleImages.length ? (
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visibleImages.map((image) => (
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<button
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key={image.id}
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type="button"
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className="image-mention-menu__item"
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role="option"
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onMouseDown={(event) => {
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event.preventDefault();
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onSelect(image);
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}}
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>
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<img src={image.src} alt="" />
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<span>
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<strong>{image.label ?? image.name}</strong>
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<em>{image.name}</em>
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</span>
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</button>
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))
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) : (
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<span className="image-mention-menu__empty">没有匹配的上传图片</span>
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)}
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</div>
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);
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}
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export default ImageMentionMenu;
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