表单设计器
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dengqichen
parent
e63ca34702
commit
03d4d21424
@ -31,10 +31,13 @@ import {
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DndContext,
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DragEndEvent,
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DragStartEvent,
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DragOverEvent,
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DragOverlay,
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PointerSensor,
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useSensor,
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useSensors,
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pointerWithin,
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rectIntersection,
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closestCenter
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} from '@dnd-kit/core';
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import { arrayMove } from '@dnd-kit/sortable';
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@ -119,6 +122,9 @@ const FormDesigner: React.FC<FormDesignerProps> = ({
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// 正在拖拽的元素ID
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const [activeId, setActiveId] = useState<string | null>(null);
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// 拖拽悬停的目标ID（用于显示插入指示器）
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const [overId, setOverId] = useState<string | null>(null);
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// 拖拽传感器 - 添加激活约束，减少误触和卡顿
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const sensors = useSensors(
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@ -129,12 +135,49 @@ const FormDesigner: React.FC<FormDesignerProps> = ({
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})
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);
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// 自定义碰撞检测策略：优先使用指针检测，避免栅格内部区域干扰排序
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const customCollisionDetection = useCallback((args: any) => {
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// 首先尝试使用 pointerWithin - 只有指针真正进入区域时才触发
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const pointerCollisions = pointerWithin(args);
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if (pointerCollisions.length > 0) {
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// 过滤掉栅格列（grid-xxx-col-xxx），优先选择画布或字段
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const nonGridCollisions = pointerCollisions.filter((collision: any) => {
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const id = collision.id.toString();
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return !id.startsWith('grid-') || id === 'canvas' || id === 'canvas-bottom';
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});
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if (nonGridCollisions.length > 0) {
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return nonGridCollisions;
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}
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// 如果只有栅格列，说明确实是要拖入栅格
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return pointerCollisions;
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}
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// 如果 pointerWithin 没有结果，使用 rectIntersection 作为后备
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const rectCollisions = rectIntersection(args);
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if (rectCollisions.length > 0) {
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return rectCollisions;
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}
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// 最后使用 closestCenter 作为兜底
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return closestCenter(args);
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}, []);
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// 生成唯一 ID
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const generateId = () => `field_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`;
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// 处理拖拽开始
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const handleDragStart = useCallback((event: DragStartEvent) => {
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setActiveId(event.active.id.toString());
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setOverId(null);
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}, []);
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// 处理拖拽悬停
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const handleDragOver = useCallback((event: DragOverEvent) => {
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const { over } = event;
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setOverId(over ? over.id.toString() : null);
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}, []);
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// 处理拖拽结束
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@ -143,6 +186,7 @@ const FormDesigner: React.FC<FormDesignerProps> = ({
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// 清除拖拽状态
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setActiveId(null);
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setOverId(null);
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if (!over) return;
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@ -207,8 +251,8 @@ const FormDesigner: React.FC<FormDesignerProps> = ({
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setFields((prev) => {
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const newFields = [...prev];
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// 如果拖到画布空白处，添加到末尾
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if (over.id === 'canvas') {
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// 如果拖到画布空白处或底部区域，添加到末尾
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if (over.id === 'canvas' || over.id === 'canvas-bottom' || overData?.isBottom) {
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newFields.push(newField);
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} else {
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// 如果拖到某个字段上，插入到该字段之后
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@ -633,8 +677,9 @@ const FormDesigner: React.FC<FormDesignerProps> = ({
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<DndContext
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sensors={sensors}
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onDragStart={handleDragStart}
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onDragOver={handleDragOver}
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onDragEnd={handleDragEnd}
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collisionDetection={closestCenter}
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collisionDetection={customCollisionDetection}
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>
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<div className="form-designer-body">
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{/* 左侧组件面板 */}
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@ -653,6 +698,8 @@ const FormDesigner: React.FC<FormDesignerProps> = ({
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onPasteToGrid={handlePasteToGrid}
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labelAlign={formConfig.labelAlign}
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hasClipboard={!!clipboard}
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activeId={activeId}
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overId={overId}
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/>
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{/* 右侧属性面板 */}
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@ -24,6 +24,8 @@ interface DesignCanvasProps {
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onDeleteField: (fieldId: string) => void;
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labelAlign?: 'left' | 'right' | 'top';
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hasClipboard?: boolean;
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activeId?: string | null; // 正在拖拽的元素ID
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overId?: string | null; // 拖拽悬停的目标ID
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}
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const DesignCanvas: React.FC<DesignCanvasProps> = ({
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@ -36,6 +38,8 @@ const DesignCanvas: React.FC<DesignCanvasProps> = ({
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onDeleteField,
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labelAlign = 'right',
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hasClipboard = false,
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activeId,
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overId,
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}) => {
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const { setNodeRef } = useDroppable({
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id: 'canvas',
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@ -91,22 +95,29 @@ const DesignCanvas: React.FC<DesignCanvasProps> = ({
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>
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<div className="form-designer-field-list">
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{fields.map((field) => (
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<FieldItem
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key={field.id}
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field={field}
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isSelected={field.id === selectedFieldId}
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onSelect={() => onSelectField(field.id)}
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onCopy={() => onCopyField(field.id)}
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onDelete={() => onDeleteField(field.id)}
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selectedFieldId={selectedFieldId}
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onSelectField={onSelectField}
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onCopyField={onCopyField}
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onPasteToGrid={onPasteToGrid}
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onDeleteField={onDeleteField}
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labelAlign={labelAlign}
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hasClipboard={hasClipboard}
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/>
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<React.Fragment key={field.id}>
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{/* 插入指示器 - 显示在拖拽悬停的字段上方 */}
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{activeId && overId === field.id && activeId !== field.id && (
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<DropIndicator text="释放以插入到此处" />
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)}
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<FieldItem
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field={field}
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isSelected={field.id === selectedFieldId}
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onSelect={() => onSelectField(field.id)}
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onCopy={() => onCopyField(field.id)}
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onDelete={() => onDeleteField(field.id)}
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selectedFieldId={selectedFieldId}
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onSelectField={onSelectField}
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onCopyField={onCopyField}
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onPasteToGrid={onPasteToGrid}
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onDeleteField={onDeleteField}
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labelAlign={labelAlign}
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hasClipboard={hasClipboard}
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/>
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</React.Fragment>
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))}
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<CanvasBottomDropZone />
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</div>
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</SortableContext>
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)}
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@ -115,5 +126,66 @@ const DesignCanvas: React.FC<DesignCanvasProps> = ({
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);
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};
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// 插入指示器组件
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interface DropIndicatorProps {
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text: string;
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}
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const DropIndicator: React.FC<DropIndicatorProps> = ({ text }) => {
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return (
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<div
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style={{
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height: 40,
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margin: '8px 0',
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border: '2px dashed #1890ff',
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borderRadius: 6,
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background: 'linear-gradient(90deg, #f0f5ff 0%, #e6f4ff 100%)',
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display: 'flex',
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alignItems: 'center',
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justifyContent: 'center',
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color: '#1890ff',
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fontSize: 13,
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fontWeight: 500,
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transition: 'all 0.2s ease',
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animation: 'dropIndicatorPulse 1.5s ease-in-out infinite',
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}}
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>
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{text}
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</div>
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);
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};
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// 画布底部拖放区域组件
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const CanvasBottomDropZone: React.FC = () => {
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const { setNodeRef, isOver } = useDroppable({
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id: 'canvas-bottom',
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data: {
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accept: 'field',
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isBottom: true, // 标识这是底部区域
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},
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});
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return (
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<div
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ref={setNodeRef}
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style={{
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minHeight: 60,
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marginTop: 16,
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border: `2px dashed ${isOver ? '#1890ff' : 'transparent'}`,
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borderRadius: 6,
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background: isOver ? '#f0f5ff' : 'transparent',
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display: 'flex',
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alignItems: 'center',
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justifyContent: 'center',
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color: isOver ? '#1890ff' : '#d9d9d9',
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fontSize: 12,
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transition: 'all 0.3s ease',
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}}
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>
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{isOver ? '释放以添加到底部' : '拖拽到此处添加到底部'}
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</div>
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);
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};
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export default DesignCanvas;
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@ -141,7 +141,7 @@ const GridColumn: React.FC<GridColumnProps> = ({
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<div
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ref={setNodeRef}
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style={{
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minHeight: 100,
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minHeight: fields.length === 0 ? 80 : 'auto',
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padding: 12,
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border: `2px dashed ${isOver ? '#1890ff' : '#d9d9d9'}`,
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borderRadius: 6,
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@ -133,7 +133,7 @@
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align-items: flex-start;
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gap: 12px;
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padding: 16px;
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margin-bottom: 12px;
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margin-bottom: 20px;
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background: #fff;
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border: 2px solid #e8e8e8;
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border-radius: 8px;
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@ -141,6 +141,12 @@
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transition: all 0.3s ease;
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}
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/* 栅格布局字段项特殊样式 - 更大的间距 */
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.form-designer-field-item:has(.ant-row) {
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margin-bottom: 24px;
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padding: 20px;
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}
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.form-designer-field-item:hover {
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border-color: #1890ff;
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box-shadow: 0 2px 8px rgba(24, 144, 255, 0.1);
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@ -263,3 +269,15 @@
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height: 24px !important;
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}
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/* 插入指示器脉冲动画 */
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@keyframes dropIndicatorPulse {
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0%, 100% {
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opacity: 0.8;
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box-shadow: 0 0 0 0 rgba(24, 144, 255, 0.4);
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}
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50% {
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opacity: 1;
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box-shadow: 0 0 0 4px rgba(24, 144, 255, 0.1);
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}
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}
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