setPointerEventRoot 设置指针事件根元素

setPointerEventRoot

类型: MethodDeclaration

所属类: CommandFunctionList

定义位置: command.ts

描述

设置指针事件根元素

参数

参数名	类型	描述	默认值
\{operation, element\}	`{
operation: string
element?: ElementGetter
}`	-	-

返回值

类型: CommandFunction

源代码

位置: 第 4974 行

protected setPointerEventRoot({operation, element}: {
    operation: string
    element?: ElementGetter
  }): CommandFunction {
    // 补丁：2023-3-19
    if (operation === 'set') {
      operation = 'add'
    }
    switch (operation) {
      case 'add': {
        const getElement = Command.compileElement(element!)
        return () => {
          const element = getElement()
          if (element) {
            UI.addPointerEventRoot(element)
          }
          return true
        }
      }
      case 'remove': {
        const getElement = Command.compileElement(element!)
        return () => {
          const element = getElement()
          if (element) {
            UI.removePointerEventRoot(element)
          }
          return true
        }
      }
      case 'remove-latest':
        return () => {
          UI.removeLatestPointerEventRoot()
          return true
        }
      case 'reset':
        return () => {
          UI.resetPointerEventRoots()
          return true
        }
    }
    throw new Error('Compiling Error')
  }

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文档生成时间：2025/7/21 20:53:39