如何使用 contributes 命令知道 Markdown 预览是否聚焦 - VSCode 扩展 API

How to know if the markdown preview is focused using contributes commands - VSCode Extension API

我正在寻找与 vscode package.json 中提到的 "when": "markdownPreviewFocus" 类似的内容。不幸的是,当我尝试时它显示 markdownPreviewFocuswhen 条件下不受支持。

"editor/title": [
    {
        "command": "extension.my_command",
        "when": "markdownPreviewFocus==false",
        "group": "navigation"
    }
]

尝试:

"when": "!markdownPreviewFocus"