electron/docs/api/tray.md
2016-04-22 10:32:28 -07:00

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# Tray
> Add icons and context menus to the system's notification area.
```javascript
const electron = require('electron');
const app = electron.app;
const Menu = electron.Menu;
const Tray = electron.Tray;
var appIcon = null;
app.on('ready', function(){
appIcon = new Tray('/path/to/my/icon');
var contextMenu = Menu.buildFromTemplate([
{ label: 'Item1', type: 'radio' },
{ label: 'Item2', type: 'radio' },
{ label: 'Item3', type: 'radio', checked: true },
{ label: 'Item4', type: 'radio' }
]);
appIcon.setToolTip('This is my application.');
appIcon.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
contextMenu.items[2].checked = false;
appIcon.setContextMenu(contextMenu);
```
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.
## Class: Tray
`Tray` is an [EventEmitter][event-emitter].
### `new Tray(image)`
* `image` [NativeImage](native-image.md)
Creates a new tray icon associated with the `image`.
## Events
The `Tray` module emits the following events:
**Note:** Some events are only available on specific operating systems and are
labeled as such.
### Event: 'click'
* `event` Event
* `altKey` Boolean
* `shiftKey` Boolean
* `ctrlKey` Boolean
* `metaKey` Boolean
* `bounds` Object - the bounds of tray icon.
* `x` Integer
* `y` Integer
* `width` Integer
* `height` Integer
Emitted when the tray icon is clicked.
**Note:** The `bounds` payload is only implemented on OS X and Windows.
### Event: 'right-click' _OS X_ _Windows_
* `event` Event
* `altKey` Boolean
* `shiftKey` Boolean
* `ctrlKey` Boolean
* `metaKey` Boolean
* `bounds` Object - the bounds of tray icon.
* `x` Integer
* `y` Integer
* `width` Integer
* `height` Integer
Emitted when the tray icon is right clicked.
### Event: 'double-click' _OS X_ _Windows_
* `event` Event
* `altKey` Boolean
* `shiftKey` Boolean
* `ctrlKey` Boolean
* `metaKey` Boolean
* `bounds` Object - the bounds of tray icon
* `x` Integer
* `y` Integer
* `width` Integer
* `height` Integer
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' _OS X_
Emitted when any dragged items are dropped on the tray icon.
### Event: 'drop-files' _OS X_
* `event`
* `files` Array - the file path of dropped files.
Emitted when dragged files are dropped in the tray icon.
### Event: 'drag-enter' _OS X_
Emitted when a drag operation enters the tray icon.
### Event: 'drag-leave' _OS X_
Emitted when a drag operation exits the tray icon.
### Event: 'drag-end' _OS X_
Emitted when a drag operation ends on the tray or ends at another location.
## Methods
The `Tray` module has the following methods:
**Note:** Some methods are only available on specific operating systems and are
labeled as such.
### `Tray.destroy()`
Destroys the tray icon immediately.
### `Tray.setImage(image)`
* `image` [NativeImage](native-image.md)
Sets the `image` associated with this tray icon.
### `Tray.setPressedImage(image)` _OS X_
* `image` [NativeImage](native-image.md)
Sets the `image` associated with this tray icon when pressed on OS X.
### `Tray.setToolTip(toolTip)`
* `toolTip` String
Sets the hover text for this tray icon.
### `Tray.setTitle(title)` _OS X_
* `title` String
Sets the title displayed aside of the tray icon in the status bar.
### `Tray.setHighlightMode(highlight)` _OS X_
* `highlight` Boolean
Sets whether the tray icon's background becomes highlighted (in blue)
when the tray icon is clicked. Defaults to true.
### `Tray.displayBalloon(options)` _Windows_
* `options` Object
* `icon` [NativeImage](native-image.md)
* `title` String
* `content` String
Displays a tray balloon.
### `Tray.popUpContextMenu([menu, position])` _OS X_ _Windows_
* `menu` Menu (optional)
* `position` Object (optional) - The pop up position.
* `x` Integer
* `y` Integer
Popups the context menu of tray icon. When `menu` is passed, the `menu` will
showed instead of the tray'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.
[event-emitter]: http://nodejs.org/api/events.html#events_class_events_eventemitter