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