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List View: Fix error when switching between template preview modes #58533

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merged 1 commit into from
Feb 1, 2024
Merged

List View: Fix error when switching between template preview modes #58533

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88 changes: 48 additions & 40 deletions packages/block-editor/src/components/list-view/block.js
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Original file line number Diff line number Diff line change
Expand Up @@ -108,25 +108,6 @@ function ListViewBlock( {
blockEditingMode === 'default';
const instanceId = useInstanceId( ListViewBlock );
const descriptionId = `list-view-block-select-button__${ instanceId }`;
const blockPositionDescription = getBlockPositionDescription(
position,
siblingBlockCount,
level
);

const blockAriaLabel = isLocked
? sprintf(
// translators: %s: The title of the block. This string indicates a link to select the locked block.
__( '%s (locked)' ),
blockTitle
)
: blockTitle;

const settingsAriaLabel = sprintf(
// translators: %s: The title of the block.
__( 'Options for %s' ),
blockTitle
);

const {
expand,
Expand All @@ -138,18 +119,6 @@ function ListViewBlock( {
treeGridElementRef,
} = useListViewContext();

const hasSiblings = siblingBlockCount > 0;
const hasRenderedMovers = showBlockMovers && hasSiblings;
const moverCellClassName = classnames(
'block-editor-list-view-block__mover-cell',
{ 'is-visible': isHovered || isSelected }
);

const listViewBlockSettingsClassName = classnames(
'block-editor-list-view-block__menu-cell',
{ 'is-visible': isHovered || isFirstSelectedBlock }
);

// If multiple blocks are selected, deselect all blocks when the user
// presses the escape key.
const onKeyDown = ( event ) => {
Expand Down Expand Up @@ -256,6 +225,54 @@ function ListViewBlock( {
setSettingsAnchorRect( undefined );
}, [ setSettingsAnchorRect ] );

// Pass in a ref to the row, so that it can be scrolled
// into view when selected. For long lists, the placeholder for the
// selected block is also observed, within ListViewLeafPlaceholder.
useListViewScrollIntoView( {
isSelected,
rowItemRef: rowRef,
selectedClientIds,
} );

// When switching between rendering modes (such as template preview and content only),
// it is possible for a block to temporarily be unavailable. In this case, we should not
// render the leaf, to avoid errors further down the tree.
if ( ! block ) {
return null;
}

const blockPositionDescription = getBlockPositionDescription(
position,
siblingBlockCount,
level
);

const blockAriaLabel = isLocked
? sprintf(
// translators: %s: The title of the block. This string indicates a link to select the locked block.
__( '%s (locked)' ),
blockTitle
)
: blockTitle;

const settingsAriaLabel = sprintf(
// translators: %s: The title of the block.
__( 'Options for %s' ),
blockTitle
);

const hasSiblings = siblingBlockCount > 0;
const hasRenderedMovers = showBlockMovers && hasSiblings;
const moverCellClassName = classnames(
'block-editor-list-view-block__mover-cell',
{ 'is-visible': isHovered || isSelected }
);

const listViewBlockSettingsClassName = classnames(
'block-editor-list-view-block__menu-cell',
{ 'is-visible': isHovered || isFirstSelectedBlock }
);

let colSpan;
if ( hasRenderedMovers ) {
colSpan = 2;
Expand Down Expand Up @@ -288,15 +305,6 @@ function ListViewBlock( {
? selectedClientIds
: [ clientId ];

// Pass in a ref to the row, so that it can be scrolled
// into view when selected. For long lists, the placeholder for the
// selected block is also observed, within ListViewLeafPlaceholder.
useListViewScrollIntoView( {
isSelected,
rowItemRef: rowRef,
selectedClientIds,
} );

// Detect if there is a block in the canvas currently being edited and multi-selection is not happening.
const currentlyEditingBlockInCanvas =
isSelected && selectedClientIds.length === 1;
Expand Down
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