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fix(aria-describer): server-side rendering error during cleanup (#8903)

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Fixes a potential server-side rendering error when the `AriaDescriber` is being cleaned up.

Fixes #8901.
This commit is contained in:
Kristiyan Kostadinov
2017-12-13 22:53:26 +01:00
committed by Andrew Seguin
parent a4c042b6c9
commit 8a3b19ea92
1 changed files with 4 additions and 3 deletions
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src/cdk/a11y/aria-describer.ts
+4 -3
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@@ -138,7 +138,6 @@ export class AriaDescriber {
/** Creates the global container for all aria-describedby messages. */
private _createMessagesContainer() {
messagesContainer = this._document.createElement('div');
messagesContainer.setAttribute('id', MESSAGES_CONTAINER_ID);
messagesContainer.setAttribute('aria-hidden', 'true');
messagesContainer.style.display = 'none';
@@ -147,8 +146,10 @@ export class AriaDescriber {
/** Deletes the global messages container. */
private _deleteMessagesContainer() {
this._document.body.removeChild(messagesContainer!);
messagesContainer = null;
if (messagesContainer && messagesContainer.parentNode) {
messagesContainer.parentNode.removeChild(messagesContainer);
messagesContainer = null;
}
}
/** Removes all cdk-describedby messages that are hosted through the element. */