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Added screen reader alerts for various actions throughout the app.
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// | ||
// Copyright (c) Microsoft. All rights reserved. | ||
// Licensed under the MIT license. | ||
// | ||
// Microsoft Bot Framework: http://botframework.com | ||
// | ||
// Bot Framework Emulator Github: | ||
// https://github.com/Microsoft/BotFramwork-Emulator | ||
// | ||
// Copyright (c) Microsoft Corporation | ||
// All rights reserved. | ||
// | ||
// MIT License: | ||
// Permission is hereby granted, free of charge, to any person obtaining | ||
// a copy of this software and associated documentation files (the | ||
// "Software"), to deal in the Software without restriction, including | ||
// without limitation the rights to use, copy, modify, merge, publish, | ||
// distribute, sublicense, and/or sell copies of the Software, and to | ||
// permit persons to whom the Software is furnished to do so, subject to | ||
// the following conditions: | ||
// | ||
// The above copyright notice and this permission notice shall be | ||
// included in all copies or substantial portions of the Software. | ||
// | ||
// THE SOFTWARE IS PROVIDED ""AS IS"", WITHOUT WARRANTY OF ANY KIND, | ||
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | ||
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE | ||
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION | ||
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | ||
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
// | ||
|
||
import { ariaAlertService } from './ariaAlertService'; | ||
|
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describe('AriaAlertService', () => { | ||
it('should create an aria alert', () => { | ||
ariaAlertService.alert('I am an alert!'); | ||
const alertElement = document.querySelector('body > span') as HTMLSpanElement; | ||
expect(alertElement).toBeTruthy(); | ||
expect(alertElement.innerText).toBe('I am an alert!'); | ||
}); | ||
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it('should not create an aria alert if there is no message', () => { | ||
// make sure there are no leftover alerts from previous test(s) | ||
const preExistingAlerts = document.querySelectorAll('body > span'); | ||
preExistingAlerts.forEach(alert => alert.remove()); | ||
ariaAlertService.alert(undefined); | ||
const alertElement = document.querySelector('body > span') as HTMLSpanElement; | ||
expect(alertElement).toBeFalsy(); | ||
}); | ||
}); |
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// | ||
// Copyright (c) Microsoft. All rights reserved. | ||
// Licensed under the MIT license. | ||
// | ||
// Microsoft Bot Framework: http://botframework.com | ||
// | ||
// Bot Framework Emulator Github: | ||
// https://github.com/Microsoft/BotFramwork-Emulator | ||
// | ||
// Copyright (c) Microsoft Corporation | ||
// All rights reserved. | ||
// | ||
// MIT License: | ||
// Permission is hereby granted, free of charge, to any person obtaining | ||
// a copy of this software and associated documentation files (the | ||
// "Software"), to deal in the Software without restriction, including | ||
// without limitation the rights to use, copy, modify, merge, publish, | ||
// distribute, sublicense, and/or sell copies of the Software, and to | ||
// permit persons to whom the Software is furnished to do so, subject to | ||
// the following conditions: | ||
// | ||
// The above copyright notice and this permission notice shall be | ||
// included in all copies or substantial portions of the Software. | ||
// | ||
// THE SOFTWARE IS PROVIDED ""AS IS"", WITHOUT WARRANTY OF ANY KIND, | ||
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | ||
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE | ||
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION | ||
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | ||
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
// | ||
|
||
let singleton: AriaAlertService; | ||
class AriaAlertService { | ||
constructor() { | ||
singleton = this; | ||
} | ||
|
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/** Creates an alert and inserts it into the DOM */ | ||
public alert(msg: string): void { | ||
if (!msg) { | ||
return; | ||
} | ||
const alert = document.createElement('span'); | ||
alert.innerText = msg; | ||
alert.setAttribute('role', 'alert'); | ||
alert.setAttribute('style', 'position: absolute; top: -9999px;'); | ||
document.body.appendChild(alert); | ||
// remove the alert after it has been read | ||
setTimeout(alert.remove.bind(alert), 5000); | ||
} | ||
} | ||
|
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/** Creates invisible alerts to be read by screen reader technologies */ | ||
export const ariaAlertService = singleton || new AriaAlertService(); |
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// | ||
// Copyright (c) Microsoft. All rights reserved. | ||
// Licensed under the MIT license. | ||
// | ||
// Microsoft Bot Framework: http://botframework.com | ||
// | ||
// Bot Framework Emulator Github: | ||
// https://github.com/Microsoft/BotFramwork-Emulator | ||
// | ||
// Copyright (c) Microsoft Corporation | ||
// All rights reserved. | ||
// | ||
// MIT License: | ||
// Permission is hereby granted, free of charge, to any person obtaining | ||
// a copy of this software and associated documentation files (the | ||
// "Software"), to deal in the Software without restriction, including | ||
// without limitation the rights to use, copy, modify, merge, publish, | ||
// distribute, sublicense, and/or sell copies of the Software, and to | ||
// permit persons to whom the Software is furnished to do so, subject to | ||
// the following conditions: | ||
// | ||
// The above copyright notice and this permission notice shall be | ||
// included in all copies or substantial portions of the Software. | ||
// | ||
// THE SOFTWARE IS PROVIDED ""AS IS"", WITHOUT WARRANTY OF ANY KIND, | ||
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | ||
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE | ||
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION | ||
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | ||
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
// | ||
|
||
export * from './ariaAlertService'; |
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