mldong-flow-designer-plus/packages/flow-designer/src/node/Task.ts

本项目包含了作者为B站课堂视频[《工作流设计器开发最佳实践》](https://www.bilibili.com/cheese/play/ss24484)的过程源码。教程中开发的组件也可用于实际生产环境中。以下是和使用文档和课程章节说明。 ## 实战项目 [演示地址](https://flow-pro.mldong.com/)

// Task.ts
import { h } from "@logicflow/core";
import { RectResize } from "@logicflow/extension";
import userTaskSvgStr from '../assets/user-task.svg?raw'
import { parseSvg } from '../tool'
import { ColorEnum, NodeStateEnum } from "../types/enums";
const paths = parseSvg(userTaskSvgStr)
class TaskModel extends RectResize.model {
  setAttributes(): void {
    if((this.text && this.text.value == "") || !this.text) {
      this.text.value = "用户任务";
    }
  }
  getNodeStyle() {
    const theme = this.graphModel.props.theme;
    const style = super.getNodeStyle();
    if(this.properties.state == NodeStateEnum.history) {
      style.stroke = theme.historyColor || ColorEnum.historyColor;
    } else if(this.properties.state == NodeStateEnum.active) {
      style.stroke = theme.activeColor || ColorEnum.activeColor;
    } else {
      style.stroke = theme.primaryColor || ColorEnum.primaryColor;
    }
    // style.strokeDasharray = "3 3";
    return style;
  }
}

class TaskView extends RectResize.view {
  private getLabelShape() {
    const { model } = this.props;
    const { x, y, width, height } = model;
    const style = model.getNodeStyle();
    return h(
      "svg",
      {
        x: x - width / 2 + 5,
        y: y - height / 2 + 5,
        width: 25,
        height: 25,
        viewBox: "0 0 1274 1024"
      },
      ...paths.map(d=>{
        return h("path", {
          fill: style.stroke,
          d
        })
      }),
    );
  }
  
  /**
   * 完全自定义节点外观方法
   */
  getResizeShape() {
    const { model } = this.props;
    const { x, y, width, height, radius } = model;
    const style = model.getNodeStyle();
    return h("g", {}, [
      h("rect", {
        ...style,
        x: x - width / 2,
        y: y - height / 2,
        rx: radius,
        ry: radius,
        width,
        height
      }),
      this.getLabelShape()
    ]);
  }
}

export default {
  type: "task",
  view: TaskView,
  model: TaskModel,
};