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perf(overlay): remove detached overlays from the DOM - #12414

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jelbourn merged 1 commit into
angular:masterfrom
crisbeto:12341/overlay-remove-bounding-box
Aug 1, 2018
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perf(overlay): remove detached overlays from the DOM#12414
jelbourn merged 1 commit into
angular:masterfrom
crisbeto:12341/overlay-remove-bounding-box

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@crisbeto

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Removes the detached overlays from the DOM, rather than keeping their host element. Previously we kept the elements in the DOM, because they don't interfere with user interactions and it made it easier to handle animations, however doing so can cause scroll jank, because the host still has dimensions and is being rendered by the browser.

Fixes#12341.

@crisbetocrisbeto added perf This issue is related to performance target: patch This PR is targeted for the next patch release labels Jul 27, 2018
@googlebotgooglebot added the cla: yes PR author has agreed to Google's Contributor License Agreement label Jul 27, 2018
@jelbourn

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Will this conflict with #11806?

@crisbeto

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As far as I can tell no, because the overlay in #11806 never detaches, it just toggles .cdk-visually-hidden.

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LGTM

private _backdropClick: Subject<MouseEvent> = new Subject();
private _attachments = new Subject<void>();
private _detachments = new Subject<void>();
private _previousHostParent: HTMLElement;

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Add a description for this that explains how its used?

@jelbournjelbourn added pr: lgtm action: merge The PR is ready for merge by the caretaker labels Jul 28, 2018
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I see that you just added the pr: merge ready label, but the following checks are still failing:
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If you want your PR to be merged, it has to pass all the CI checks.

If you can't get the PR to a green state due to flakes or broken master, please try rebasing to master and/or restarting the CI job. If that fails and you believe that the issue is not due to your change, please contact the caretaker and ask for help.

Removes the detached overlays from the DOM, rather than keeping their host element. Previously we kept the elements in the DOM, because they don't interfere with user interactions and it made it easier to handle animations, however doing so can cause scroll jank, because the host still has dimensions and is being rendered by the browser.
Fixesangular#12341.
@crisbeto
crisbetoforce-pushed the 12341/overlay-remove-bounding-box branch from 1319612 to ed490c4CompareJuly 28, 2018 07:31
@jelbourn
jelbourn merged commit 71886f8 into angular:masterAug 1, 2018
jelbourn pushed a commit that referenced this pull request Aug 7, 2018
Removes the detached overlays from the DOM, rather than keeping their host element. Previously we kept the elements in the DOM, because they don't interfere with user interactions and it made it easier to handle animations, however doing so can cause scroll jank, because the host still has dimensions and is being rendered by the browser.
Fixes#12341.
jelbourn pushed a commit that referenced this pull request Aug 7, 2018
Removes the detached overlays from the DOM, rather than keeping their host element. Previously we kept the elements in the DOM, because they don't interfere with user interactions and it made it easier to handle animations, however doing so can cause scroll jank, because the host still has dimensions and is being rendered by the browser.
Fixes#12341.
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action: mergeThe PR is ready for merge by the caretakercla: yesPR author has agreed to Google's Contributor License AgreementperfThis issue is related to performancetarget: patchThis PR is targeted for the next patch release

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scroll lag after opening and closing calendar (or any other overlay like autocomplete)

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