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{ each } from '@antv/util';\nimport Element from '../../../geometry/element/';\nimport {\n  getElements,\n  getIntersectElements,\n  getMaskedElements,\n  getSiblingMaskElements,\n  getSilbings,\n  isInRecords,\n  isMask,\n} from '../util';\nimport StateBase from './state-base';\n\n/**\n * @ignore\n * 区域设置状态的基础 Action\n */\nclass ElementRangeState extends StateBase {\n  private startPoint = null;\n  private endPoint = null;\n  private isStarted: boolean = false;\n  /**\n   * 是否作用于当前 view 的 siblings，默认是 false 仅作用于自己\n   */\n  protected effectSiblings = false;\n  /**\n   * 是否受 element 的数据影响，还是受包围盒的影响\n   */\n  protected effectByRecord = false;\n  // 获取当前的位置\n  private getCurrentPoint() {\n    const event = this.context.event;\n    return {\n      x: event.x,\n      y: event.y,\n    };\n  }\n\n  /**\n   * 开始，记录开始选中的位置\n   */\n  public start() {\n    this.clear(); // 开始的时候清理之前的状态\n    this.startPoint = this.getCurrentPoint();\n    this.isStarted = true;\n  }\n\n  protected getIntersectElements() {\n    let elements = null;\n    if (isMask(this.context)) {\n      elements = getMaskedElements(this.context, 10);\n    } else {\n      const startPoint = this.startPoint;\n      const endPoint = this.isStarted ? this.getCurrentPoint() : this.endPoint;\n      // 如果没有开始，则不允许范围设置状态，保护性质\n      if (!startPoint || !endPoint) {\n        return;\n      }\n      // 计算框选区域\n      const box = {\n        minX: Math.min(startPoint.x, endPoint.x),\n        minY: Math.min(startPoint.y, endPoint.y),\n        maxX: Math.max(startPoint.x, endPoint.x),\n        maxY: Math.max(startPoint.y, endPoint.y),\n      };\n      // this.clear(); // 不全部清理，会导致闪烁\n      const view = this.context.view;\n      elements = getIntersectElements(view, box);\n    }\n    return elements;\n  }\n  /**\n   * 选中\n   */\n  public setStateEnable(enable: boolean) {\n    if (this.effectSiblings && !this.effectByRecord) {\n      this.setSiblingsState(enable);\n    } else {\n      const allElements = getElements(this.context.view);\n      const elements = this.getIntersectElements();\n      if (elements && elements.length) {\n        if (this.effectByRecord) {\n          this.setSiblingsStateByRecord(elements, enable);\n        } else {\n          this.setElementsState(elements, enable, allElements);\n        }\n      } else {\n        this.clear();\n      }\n    }\n  }\n  // 根据选中的 element 的数据进行设置状态\n  private setSiblingsStateByRecord(elements, enable) {\n    const view = this.context.view;\n    const siblings = getSilbings(view);\n    const records = elements.map((el) => {\n      return el.getModel().data;\n    });\n    const xFiled = view.getXScale().field;\n    const yField = view.getYScales()[0].field;\n    each(siblings, (sibling) => {\n      const allElements = getElements(sibling);\n      const effectElements = allElements.filter((el) => {\n        const record = el.getModel().data;\n        return isInRecords(records, record, xFiled, yField);\n      });\n      this.setElementsState(effectElements, enable, allElements);\n    });\n  }\n\n  // 设置兄弟 view 的状态\n  private setSiblingsState(enable: boolean) {\n    const view = this.context.view;\n    const siblings = getSilbings(view);\n    if (isMask(this.context)) {\n      // 受 mask 影响\n      each(siblings, (sibling) => {\n        const allElements = getElements(sibling);\n        const effectElements = getSiblingMaskElements(this.context, sibling, 10);\n        if (effectElements && effectElements.length) {\n          this.setElementsState(effectElements, enable, allElements);\n        } else {\n          this.clearViewState(sibling);\n        }\n      });\n    }\n  }\n\n  protected setElementsState(elements: Element[], enable, allElements: Element[]) {\n    each(allElements, (el) => {\n      if (!elements.includes(el)) {\n        this.setElementState(el, false);\n      } else {\n        this.setElementState(el, enable);\n      }\n    });\n  }\n\n  /**\n   * 结束\n   */\n  public end() {\n    this.isStarted = false;\n    this.endPoint = this.getCurrentPoint();\n  }\n\n  // 复写 clear\n  public clear() {\n    const view = this.context.view;\n    // 判断是否影响 siblings\n    if (this.effectSiblings) {\n      const siblings = getSilbings(view);\n      each(siblings, (sibling) => {\n        this.clearViewState(sibling);\n      });\n    } else {\n      this.clearViewState(view);\n    }\n  }\n}\n\nexport default ElementRangeState;\n"]}