electron/docs/api/tray.md

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## Class: Tray
> Add icons and context menus to the system's notification area.
Process: [Main](../glossary.md#main-process)
`Tray` is an [EventEmitter][event-emitter].
```javascript
const {app, Menu, Tray} = require('electron')
let tray = null
app.on('ready', () => {
tray = new Tray('/path/to/my/icon')
const contextMenu = Menu.buildFromTemplate([
{label: 'Item1', type: 'radio'},
{label: 'Item2', type: 'radio'},
{label: 'Item3', type: 'radio', checked: true},
{label: 'Item4', type: 'radio'}
])
tray.setToolTip('This is my application.')
tray.setContextMenu(contextMenu)
})
```
__Platform limitations:__
* On Linux the app indicator will be used if it is supported, otherwise
`GtkStatusIcon` will be used instead.
* On Linux distributions that only have app indicator support, you have to
install `libappindicator1` to make the tray icon work.
* App indicator will only be shown when it has a context menu.
* When app indicator is used on Linux, the `click` event is ignored.
* On Linux in order for changes made to individual `MenuItem`s to take effect,
you have to call `setContextMenu` again. For example:
```javascript
const {app, Menu, Tray} = require('electron')
let appIcon = null
app.on('ready', () => {
appIcon = new Tray('/path/to/my/icon')
const contextMenu = Menu.buildFromTemplate([
{label: 'Item1', type: 'radio'},
{label: 'Item2', type: 'radio'}
])
// Make a change to the context menu
contextMenu.items[1].checked = false
// Call this again for Linux because we modified the context menu
appIcon.setContextMenu(contextMenu)
})
```
* On Windows it is recommended to use `ICO` icons to get best visual effects.
If you want to keep exact same behaviors on all platforms, you should not
rely on the `click` event and always attach a context menu to the tray icon.
### `new Tray(image)`
* `image` ([NativeImage](native-image.md) | String)
Creates a new tray icon associated with the `image`.
### Instance Events
The `Tray` module emits the following events:
#### Event: 'click'
* `event` Event
* `altKey` Boolean
* `shiftKey` Boolean
* `ctrlKey` Boolean
* `metaKey` Boolean
* `bounds` [Rectangle](structures/rectangle.md) - The bounds of tray icon
Emitted when the tray icon is clicked.
#### Event: 'right-click' _macOS_ _Windows_
* `event` Event
* `altKey` Boolean
* `shiftKey` Boolean
* `ctrlKey` Boolean
* `metaKey` Boolean
* `bounds` [Rectangle](structures/rectangle.md) - The bounds of tray icon
Emitted when the tray icon is right clicked.
#### Event: 'double-click' _macOS_ _Windows_
* `event` Event
* `altKey` Boolean
* `shiftKey` Boolean
* `ctrlKey` Boolean
* `metaKey` Boolean
* `bounds` [Rectangle](structures/rectangle.md) - The bounds of tray icon
Emitted when the tray icon is double clicked.
#### Event: 'balloon-show' _Windows_
Emitted when the tray balloon shows.
#### Event: 'balloon-click' _Windows_
Emitted when the tray balloon is clicked.
#### Event: 'balloon-closed' _Windows_
Emitted when the tray balloon is closed because of timeout or user manually
closes it.
#### Event: 'drop' _macOS_
Emitted when any dragged items are dropped on the tray icon.
#### Event: 'drop-files' _macOS_
* `event` Event
* `files` String[] - The paths of the dropped files.
Emitted when dragged files are dropped in the tray icon.
#### Event: 'drop-text' _macOS_
* `event` Event
* `text` String - the dropped text string
Emitted when dragged text is dropped in the tray icon.
#### Event: 'drag-enter' _macOS_
Emitted when a drag operation enters the tray icon.
#### Event: 'drag-leave' _macOS_
Emitted when a drag operation exits the tray icon.
#### Event: 'drag-end' _macOS_
Emitted when a drag operation ends on the tray or ends at another location.
#### Event: 'mouse-enter' _macOS_
Emitted when the mouse enters the tray icon.
#### Event: 'mouse-leave' _macOS_
Emitted when the mouse exits the tray icon.
### Instance Methods
The `Tray` class has the following methods:
#### `tray.destroy()`
Destroys the tray icon immediately.
#### `tray.setImage(image)`
* `image` ([NativeImage](native-image.md) | String)
Sets the `image` associated with this tray icon.
#### `tray.setPressedImage(image)` _macOS_
* `image` [NativeImage](native-image.md)
Sets the `image` associated with this tray icon when pressed on macOS.
#### `tray.setToolTip(toolTip)`
* `toolTip` String
Sets the hover text for this tray icon.
#### `tray.setTitle(title)` _macOS_
* `title` String
Sets the title displayed aside of the tray icon in the status bar.
#### `tray.setHighlightMode(mode)` _macOS_
* `mode` String - Highlight mode with one of the following values:
* `selection` - Highlight the tray icon when it is clicked and also when
its context menu is open. This is the default.
* `always` - Always highlight the tray icon.
* `never` - Never highlight the tray icon.
Sets when the tray's icon background becomes highlighted (in blue).
**Note:** You can use `highlightMode` with a [`BrowserWindow`](browser-window.md)
by toggling between `'never'` and `'always'` modes when the window visibility
changes.
```javascript
const {BrowserWindow, Tray} = require('electron')
const win = new BrowserWindow({width: 800, height: 600})
const tray = new Tray('/path/to/my/icon')
tray.on('click', () => {
win.isVisible() ? win.hide() : win.show()
})
win.on('show', () => {
tray.setHighlightMode('always')
})
win.on('hide', () => {
tray.setHighlightMode('never')
})
```
#### `tray.displayBalloon(options)` _Windows_
* `options` Object
* `icon` ([NativeImage](native-image.md) | String) - (optional)
* `title` String - (optional)
* `content` String - (optional)
Displays a tray balloon.
#### `tray.popUpContextMenu([menu, position])` _macOS_ _Windows_
* `menu` Menu (optional)
* `position` [Point](structures/point.md) (optional) - The pop up position.
Pops up the context menu of the tray icon. When `menu` is passed, the `menu` will
be shown instead of the tray icon's context menu.
The `position` is only available on Windows, and it is (0, 0) by default.
#### `tray.setContextMenu(menu)`
* `menu` Menu
Sets the context menu for this icon.
#### `tray.getBounds()` _macOS_ _Windows_
Returns [`Rectangle`](structures/rectangle.md)
The `bounds` of this tray icon as `Object`.
#### `tray.isDestroyed()`
Returns `Boolean` - Whether the tray icon is destroyed.
[event-emitter]: https://nodejs.org/api/events.html#events_class_eventemitter