fix(dialog): prevent error when restoring focus on IE #2771
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* Adds an extra null check when restoring focus after a dialog is closed. This is necessary, because the `document.activeElement` can be null in IE. * Switches the focusing logic to use the `Renderer`. Fixes angular#2760.
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jelbourn
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Jan 23, 2017
| this._ngZone.onMicrotaskEmpty.first().subscribe(() => { | ||
| this._renderer.invokeElementMethod(this._elementFocusedBeforeDialogWasOpened, 'focus'); | ||
| }); | ||
| } |
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FYI: using the renderer is fine here, but not exactly necessary since closing a dialog would always be the result of a user action which can only happen once the app is running in the browser.
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pr: lgtm
action: merge
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document.activeElementcan be null in IE.Renderer.Fixes #2760.
Note that this is missing a unit test, because it's hard to mock up the
activeElement.