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Multi selection: fix intermittent e2e failure #19865

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Jan 25, 2020
Merged

Multi selection: fix intermittent e2e failure #19865

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12 changes: 10 additions & 2 deletions packages/block-editor/src/components/block-list/block-popover.js
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Original file line number Diff line number Diff line change
Expand Up @@ -115,9 +115,17 @@ function BlockPopover( {
let anchorRef = node;

if ( hasMultiSelection ) {
const bottomNode = blockNodes[ lastClientId ];

// Wait to render the popover until the bottom reference is available
// as well.
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Is there something that triggers a re-render when the reference become available. What guarantee us that the rerender will happen?

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They are available through state provided by context. When there is a multi selection, the first and the last multi selected blocks both set their reference in this state, also creating a new array, so it causes a re-render for this component. The first and last node are not set at the same time though, so we have to wait until both are set.

if ( ! bottomNode ) {
return null;
}

anchorRef = {
top: blockNodes[ clientId ],
bottom: blockNodes[ lastClientId ],
top: node,
bottom: bottomNode,
};
}

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