fix: allow cancelling of bluetooth requests (#37601)
* fix: allow cancelling of bluetooth requests allows cancelling of bluetooth requests when no devices present * docs: update docs to reflect how bluetooth works.
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7 changed files with 56 additions and 31 deletions
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@ -777,20 +777,24 @@ Returns:
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* `callback` Function
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* `deviceId` string
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Emitted when bluetooth device needs to be selected on call to
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`navigator.bluetooth.requestDevice`. To use `navigator.bluetooth` api
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`webBluetooth` should be enabled. If `event.preventDefault` is not called,
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first available device will be selected. `callback` should be called with
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`deviceId` to be selected, passing empty string to `callback` will
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cancel the request.
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Emitted when a bluetooth device needs to be selected when a call to
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`navigator.bluetooth.requestDevice` is made. `callback` should be called with
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the `deviceId` of the device to be selected. Passing an empty string to
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`callback` will cancel the request.
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If no event listener is added for this event, all bluetooth requests will be cancelled.
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If an event listener is not added for this event, or if `event.preventDefault`
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is not called when handling this event, the first available device will be
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automatically selected.
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Due to the nature of bluetooth, scanning for devices when
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`navigator.bluetooth.requestDevice` is called may take time and will cause
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`select-bluetooth-device` to fire multiple times until `callback` is called
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with either a device id or an empty string to cancel the request.
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```javascript title='main.js'
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const { app, BrowserWindow } = require('electron')
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let win = null
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app.commandLine.appendSwitch('enable-experimental-web-platform-features')
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app.whenReady().then(() => {
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win = new BrowserWindow({ width: 800, height: 600 })
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@ -800,6 +804,9 @@ app.whenReady().then(() => {
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return device.deviceName === 'test'
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})
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if (!result) {
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// The device wasn't found so we need to either wait longer (eg until the
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// device is turned on) or cancel the request by calling the callback
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// with an empty string.
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callback('')
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} else {
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callback(result.deviceId)
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