compileElement 编译元素对象

compileElement

类型: MethodDeclaration

所属类: CommandFunctionList

定义位置: command.ts

描述

编译元素对象

参数 element: 元素访问器

返回值:元素访问器函数

参数

参数名	类型	描述	默认值
element	ElementGetter	-	-

返回值

类型: () => UIElement \| undefined

元素访问器函数

源代码

位置: 第 850 行

public compileElement(element: ElementGetter): () => UIElement | undefined {
    switch (element.type) {
      case 'trigger':
        return () => CurrentEvent.triggerElement
      case 'latest':
        return () => UI.latest
      case 'by-id': {
        const {presetId} = element
        return () => UI.get(presetId)
      }
      case 'by-index': {
        const getParent = Command.compileElement(element.parent)
        const getIndex = Command.compileNumber(element.index, -1)
        return () => getParent()?.children[getIndex()]
      }
      case 'by-ancestor-and-id': {
        const {ancestor, presetId} = element
        const getAncestor = Command.compileElement(ancestor)
        return () => {
          const ancestor = getAncestor()
          return ancestor
          ? ancestor.query('presetId', presetId)
          ?? ancestor.query('referenceId', presetId)
          : undefined
        }
      }
      case 'by-button-index': {
        const getFocus = Command.compileElement(element.focus)
        const getIndex = Command.compileNumber(element.index, -1)
        return () => {
          const focus = getFocus()
          return focus instanceof UIElement
          ? UI.getFocusedButtons(focus, true)[getIndex()]
          : undefined
        }
      }
      case 'selected-button': {
        const getFocus = Command.compileElement(element.focus)
        return () => UI.getSelectedButton(getFocus())
      }
      case 'focus':
        return () => UI.getFocus()
      case 'parent': {
        const getElement = Command.compileVariable(element.variable, Attribute.ELEMENT_GET)
        return () => getElement()?.parent ?? undefined
      }
      case 'variable':
        return Command.compileVariable(element.variable, Attribute.ELEMENT_GET)
    }
  }

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文档生成时间：2025/7/21 20:53:39