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 884 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：2026/2/1 16:51:39