对话框

对话框

显示用于打开和保存文件、警报等的本机系统对话框。

下面是一个选择多个文件的对话框示例：

const { dialog } = require('electron')
console.log(dialog.showOpenDialog({ properties: ['openFile', 'multiSelections'] }))

The Dialog is opened from Electron’s main thread. If you want to use the dialog object from a renderer process, remember to access it using the remote:

const { dialog } = require('electron').remote
console.log(dialog)

方法

dialog 模块具有以下方法:

`dialog.showOpenDialogSync([browserWindow, ]options)`

browserWindow BrowserWindow (可选)
options Object
- title String (可选) - 对话框窗口的标题
- defaultPath String (可选) - 对话框的默认展示路径
- buttonLabel String (可选) - 「确认」按钮的自定义标签, 当为空时, 将使用默认标签。
- filters FileFilter[] (可选)
- properties String[] (optional) - Contains which features the dialog should use. The following values are supported:
  - openFile - 允许选择文件
  - openDirectory - 允许选择文件夹
  - multiSelections-允许多选。
  - showHiddenFiles-显示对话框中的隐藏文件。
  - createDirectory macOS - Allow creating new directories from dialog.
  - promptToCreate Windows - Prompt for creation if the file path entered in the dialog does not exist. 这并不是真的在路径上创建一个文件，而是允许返回一些不存在的地址交由应用程序去创建。
  - noResolveAliases macOS - Disable the automatic alias (symlink) path resolution. Selected aliases will now return the alias path instead of their target path.
  - treatPackageAsDirectory macOS - Treat packages, such as .app folders, as a directory instead of a file.
  - dontAddToRecent Windows - Do not add the item being opened to the recent documents list.
- message String (optional) macOS - Message to display above input boxes.
- securityScopedBookmarks Boolean (optional) macOS mas - Create security scoped bookmarks when packaged for the Mac App Store.

Returns String[] | undefined, the file paths chosen by the user; if the dialog is cancelled it returns undefined.

browserWindow 参数允许该对话框将自身附加到父窗口, 作为父窗口的模态框。

The filters specifies an array of file types that can be displayed or selected when you want to limit the user to a specific type. 例如：

{
  filters: [
    { name: 'Images', extensions: ['jpg', 'png', 'gif'] },
    { name: 'Movies', extensions: ['mkv', 'avi', 'mp4'] },
    { name: 'Custom File Type', extensions: ['as'] },
    { name: 'All Files', extensions: ['*'] }
  ]
}

extensions 数组应为没有通配符或点的扩展名 (例如, "png" 是正确的, 而 ".png" 和 *. png " 就是错误的)。若要显示所有文件, 请使用 "*" 通配符 (不支持其他通配符)。

Note: On Windows and Linux an open dialog can not be both a file selector and a directory selector, so if you set properties to ['openFile', 'openDirectory'] on these platforms, a directory selector will be shown.

dialog.showOpenDialogSync(mainWindow, {
  properties: ['openFile', 'openDirectory']
})

`dialog.showOpenDialog([browserWindow, ]options)`

browserWindow BrowserWindow (可选)
options Object
- title String (可选) - 对话框窗口的标题
- defaultPath String (可选) - 对话框的默认展示路径
- buttonLabel String (可选) - 「确认」按钮的自定义标签, 当为空时, 将使用默认标签。
- filters FileFilter[] (可选)
- properties String[] (optional) - Contains which features the dialog should use. The following values are supported:
  - openFile - 允许选择文件
  - openDirectory - 允许选择文件夹
  - multiSelections-允许多选。
  - showHiddenFiles-显示对话框中的隐藏文件。
  - createDirectory macOS - Allow creating new directories from dialog.
  - promptToCreate Windows - Prompt for creation if the file path entered in the dialog does not exist. 这并不是真的在路径上创建一个文件，而是允许返回一些不存在的地址交由应用程序去创建。
  - noResolveAliases macOS - Disable the automatic alias (symlink) path resolution. Selected aliases will now return the alias path instead of their target path.
  - treatPackageAsDirectory macOS - Treat packages, such as .app folders, as a directory instead of a file.
  - dontAddToRecent Windows - Do not add the item being opened to the recent documents list.
- message String (optional) macOS - Message to display above input boxes.
- securityScopedBookmarks Boolean (optional) macOS mas - Create security scoped bookmarks when packaged for the Mac App Store.

Returns Promise<Object> - Resolve with an object containing the following:

canceled Boolean - whether or not the dialog was canceled.
filePaths String[] - An array of file paths chosen by the user. If the dialog is cancelled this will be an empty array.
bookmarks String[] (optional) macOS mas - An array matching the filePaths array of base64 encoded strings which contains security scoped bookmark data. securityScopedBookmarks 必须启用才能捕获数据。 (For return values, see table here.)

browserWindow 参数允许该对话框将自身附加到父窗口, 作为父窗口的模态框。

The filters specifies an array of file types that can be displayed or selected when you want to limit the user to a specific type. 例如：

{
  filters: [
    { name: 'Images', extensions: ['jpg', 'png', 'gif'] },
    { name: 'Movies', extensions: ['mkv', 'avi', 'mp4'] },
    { name: 'Custom File Type', extensions: ['as'] },
    { name: 'All Files', extensions: ['*'] }
  ]
}

dialog.showOpenDialog(mainWindow, {
  properties: ['openFile', 'openDirectory']
}).then(result => {
  console.log(result.canceled)
  console.log(result.filePaths)
}).catch(err => {
  console.log(err)
})

`dialog.showSaveDialogSync([browserWindow, ]options)`

browserWindow BrowserWindow (可选)
options Object
- title String (可选) - 对话框窗口的标题
- defaultPath String (可选) - 默认情况下使用的绝对目录路径、绝对文件路径或文件名。
- buttonLabel String (可选) - 「确认」按钮的自定义标签, 当为空时, 将使用默认标签。
- filters FileFilter[] (可选)
- message String (optional) macOS - Message to display above text fields.
- nameFieldLabel String (optional) macOS - Custom label for the text displayed in front of the filename text field.
- showsTagField Boolean (optional) macOS - Show the tags input box, defaults to true.
- properties String[] (optional)
  - showHiddenFiles-显示对话框中的隐藏文件。
  - createDirectory macOS - Allow creating new directories from dialog.
  - treatPackageAsDirectory macOS - Treat packages, such as .app folders, as a directory instead of a file.
  - showOverwriteConfirmation Linux - Sets whether the user will be presented a confirmation dialog if the user types a file name that already exists.
  - dontAddToRecent Windows - Do not add the item being saved to the recent documents list.
- securityScopedBookmarks Boolean (optional) macOS mas - Create a security scoped bookmark when packaged for the Mac App Store. 当该选项被启用且文件尚不存在时，那么在选定的路径下将创建一个空文件。

Returns String | undefined, the path of the file chosen by the user; if the dialog is cancelled it returns undefined.

browserWindow 参数允许该对话框将自身附加到父窗口, 作为父窗口的模态框。

filters 可以指定可显示文件的数组类型，详见 dialog.showOpenDialog 事例

`dialog.showSaveDialog([browserWindow, ]options)`

browserWindow BrowserWindow (可选)
options Object
- title String (可选) - 对话框窗口的标题
- defaultPath String (可选) - 默认情况下使用的绝对目录路径、绝对文件路径或文件名。
- buttonLabel String (可选) - 「确认」按钮的自定义标签, 当为空时, 将使用默认标签。
- filters FileFilter[] (可选)
- message String (optional) macOS - Message to display above text fields.
- nameFieldLabel String (optional) macOS - Custom label for the text displayed in front of the filename text field.
- showsTagField Boolean (optional) macOS - Show the tags input box, defaults to true.
- properties String[] (optional)
  - showHiddenFiles-显示对话框中的隐藏文件。
  - createDirectory macOS - Allow creating new directories from dialog.
  - treatPackageAsDirectory macOS - Treat packages, such as .app folders, as a directory instead of a file.
  - showOverwriteConfirmation Linux - Sets whether the user will be presented a confirmation dialog if the user types a file name that already exists.
  - dontAddToRecent Windows - Do not add the item being saved to the recent documents list.
- securityScopedBookmarks Boolean (optional) macOS mas - Create a security scoped bookmark when packaged for the Mac App Store. 当该选项被启用且文件尚不存在时，那么在选定的路径下将创建一个空文件。

Returns Promise<Object> - Resolve with an object containing the following:

canceled Boolean - whether or not the dialog was canceled.
filePath String (optional) - If the dialog is canceled, this will be undefined.
bookmark String (optional) macOS mas - Base64 encoded string which contains the security scoped bookmark data for the saved file. securityScopedBookmarks must be enabled for this to be present. (For return values, see table here.)

browserWindow 参数允许该对话框将自身附加到父窗口, 作为父窗口的模态框。

filters 可以指定可显示文件的数组类型，详见 dialog.showOpenDialog 事例

Note: On macOS, using the asynchronous version is recommended to avoid issues when expanding and collapsing the dialog.

`dialog.showMessageBoxSync([browserWindow, ]options)`

browserWindow BrowserWindow (可选)
options Object
- type String (可选) - 可以为 "none", "info", "error", "question" 或者 "warning". 在 Windows 上, "question" 与"info"显示相同的图标, 除非你使用了 "icon" 选项设置图标。在 macOS 上, "warning" 和 "error" 显示相同的警告图标
- buttons String[] (optional) - Array of texts for buttons. On Windows, an empty array will result in one button labeled “OK”.
- defaultId Integer (可选) - 在 message box 对话框打开的时候，设置默认选中的按钮，值为在 buttons 数组中的索引.
- title String (可选) - message box 的标题，一些平台不显示.
- message String - message box 的内容.
- detail String (可选) - 额外信息.
- checkboxLabel String (optional) - If provided, the message box will include a checkbox with the given label.
- checkboxChecked Boolean (optional) - Initial checked state of the checkbox. false by default.
- icon (NativeImage | String) (可选)
- cancelId Integer (可选) - 用于取消对话框的按钮的索引，例如 Esc 键. By default this is assigned to the first button with “cancel” or “no” as the label. 默认情况下，它被分配给第一个按钮，文字为 “cancel” 或 “no”。 If no such labeled buttons exist and this option is not set, 0 will be used as the return value.
- noLink Boolean (可选) - 在Windows上，应用将尝试找出哪个 buttons 是常用按钮(例如 “Cancel” 或 “Yes”)，然后在对话框中以链接命令的方式展现其它的按钮。这可以使对话框以现代Windows应用程序的风格显示。如果你不喜欢这个行为, 你可以设置 noLink 为 true.
- normalizeAccessKeys Boolean (可选) -规范跨平台的键盘访问键。默认值为 false. 用 & 连接和转换键盘访问键, 以便它们在每个平台上正常工作.& 字符会在macOS上被删除，在 Linux 上会被转换为 _，在 Windows 上保持不变。例如 Vie&w 的按钮标签在 Linux 上会被转换为 Vie_w，在 macOS 转换为 View 并且可以被选择。而Windows和Linux上表示 Alt-W 。

Returns Integer - the index of the clicked button.

Shows a message box, it will block the process until the message box is closed. It returns the index of the clicked button.

browserWindow 参数允许该对话框将自身附加到父窗口, 作为父窗口的模态框。 If browserWindow is not shown dialog will not be attached to it. In such case It will be displayed as independed window.

`dialog.showMessageBox([browserWindow, ]options)`

browserWindow BrowserWindow (可选)
options Object
- type String (可选) - 可以为 "none", "info", "error", "question" 或者 "warning". 在 Windows 上, "question" 与"info"显示相同的图标, 除非你使用了 "icon" 选项设置图标。在 macOS 上, "warning" 和 "error" 显示相同的警告图标
- buttons String[] (optional) - Array of texts for buttons. On Windows, an empty array will result in one button labeled “OK”.
- defaultId Integer (可选) - 在 message box 对话框打开的时候，设置默认选中的按钮，值为在 buttons 数组中的索引.
- title String (可选) - message box 的标题，一些平台不显示.
- message String - message box 的内容.
- detail String (可选) - 额外信息.
- checkboxLabel String (optional) - If provided, the message box will include a checkbox with the given label.
- checkboxChecked Boolean (optional) - Initial checked state of the checkbox. false by default.
- icon NativeImage (可选)
- cancelId Integer (可选) - 用于取消对话框的按钮的索引，例如 Esc 键. By default this is assigned to the first button with “cancel” or “no” as the label. 默认情况下，它被分配给第一个按钮，文字为 “cancel” 或 “no”。 If no such labeled buttons exist and this option is not set, 0 will be used as the return value.
- noLink Boolean (可选) - 在Windows上，应用将尝试找出哪个 buttons 是常用按钮(例如 “Cancel” 或 “Yes”)，然后在对话框中以链接命令的方式展现其它的按钮。这可以使对话框以现代Windows应用程序的风格显示。如果你不喜欢这个行为, 你可以设置 noLink 为 true.
- normalizeAccessKeys Boolean (可选) -规范跨平台的键盘访问键。默认值为 false. 用 & 连接和转换键盘访问键, 以便它们在每个平台上正常工作.& 字符会在macOS上被删除，在 Linux 上会被转换为 _，在 Windows 上保持不变。例如 Vie&w 的按钮标签在 Linux 上会被转换为 Vie_w，在 macOS 转换为 View 并且可以被选择。而Windows和Linux上表示 Alt-W 。

Returns Promise<Object> - resolves with a promise containing the following properties:

response Number - The index of the clicked button.
checkboxChecked Boolean - The checked state of the checkbox if checkboxLabel was set. Otherwise false.

Shows a message box, it will block the process until the message box is closed.

browserWindow 参数允许该对话框将自身附加到父窗口, 作为父窗口的模态框。

`dialog.showErrorBox(title, content)`

title String - 显示在错误框中的标题.
content String - 显示在错误框中的文本内容.

显示一个显示错误消息的模态对话框。

这个API可以在 app 模块触发 ready 事件之前被安全地调用，它通常用在启动时报告错误。在 Linux 上, ready 事件之前调用这个API, 消息将被发送到stderr, 并且不会出现GUI对话框。

`dialog.showCertificateTrustDialog([browserWindow, ]options)` macOS Windows

browserWindow BrowserWindow (可选)
options Object
- certificate Certificate - 信任/导入的证书
- message String - 要向用户显示的消息

Returns Promise<void> - resolves when the certificate trust dialog is shown.

在macOS中, 将弹出一个用于展示消息与证书信息并向用户提供信任/导入证书的选项的模态对话框。如果提供 browserWindow 参数, 则该对话框将附加到父窗口, 使其成模态框。

在Windows中, 受限于Win32 API，可选项变得更为有限:

message 参数无效，因为操作系统提供了自身的确认对话框。
browserWindow 参数被忽略，因此无法成为模态对话框。

Bookmarks array

showOpenDialog, showOpenDialogSync, showSaveDialog, and showSaveDialogSync will return a bookmarks array.

Build Type	securityScopedBookmarks boolean	Return Type	Return Value
macOS mas	True	Success	`['LONGBOOKMARKSTRING']`
macOS mas	True	Error	`['']` (array of empty string)
macOS mas	False	NA	`[]` (empty array)
non mas	any	NA	`[]` (empty array)

工作表

在MaCOS中，如果在<0>browserWindow的参数中提供<0>BrowerWindow这一参数，或者在非<0>browserWindow中未提供<0>modals参数，则将对附加到<0>window中的<0>sheet的形式呈现。

您可以调用 BrowserWindow.getCurrentWindow().setSheetOffset(offset) 来更改附加工作表的窗口框架的偏移量。

对话框

对话框

方法

dialog.showOpenDialogSync([browserWindow, ]options)

dialog.showOpenDialog([browserWindow, ]options)

dialog.showSaveDialogSync([browserWindow, ]options)

dialog.showSaveDialog([browserWindow, ]options)

dialog.showMessageBoxSync([browserWindow, ]options)

dialog.showMessageBox([browserWindow, ]options)

dialog.showErrorBox(title, content)

dialog.showCertificateTrustDialog([browserWindow, ]options) macOS Windows

Bookmarks array

工作表

`dialog.showOpenDialogSync([browserWindow, ]options)`

`dialog.showOpenDialog([browserWindow, ]options)`

`dialog.showSaveDialogSync([browserWindow, ]options)`

`dialog.showSaveDialog([browserWindow, ]options)`

`dialog.showMessageBoxSync([browserWindow, ]options)`

`dialog.showMessageBox([browserWindow, ]options)`

`dialog.showErrorBox(title, content)`

`dialog.showCertificateTrustDialog([browserWindow, ]options)` macOS Windows