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Merging blocks: allow x to be merged into wrapper blocks (quote, list, group...) #42780

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merged 5 commits into from
Aug 12, 2022
Merged

Merging blocks: allow x to be merged into wrapper blocks (quote, list, group...) #42780

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095df17
Merging blocks: allow x to be merged into wrapper blocks (quote, list…
ellatrix Jul 28, 2022
e9ec61f
Polish
ellatrix Jul 28, 2022
051d9dc
Restore select
ellatrix Jul 29, 2022
18bf944
Restore comments
ellatrix Jul 29, 2022
97a77f2
Add e2e test
ellatrix Jul 29, 2022
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Merging blocks: allow x to be merged into wrapper blocks (quote, list… 
…, group...)
  • Loading branch information
@ellatrix
ellatrix committed Aug 12, 2022
commit 095df179c0b744da8ce5daf9e0f529c314840e38
37 changes: 32 additions & 5 deletions packages/block-editor/src/store/actions.js
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Original file line number Diff line number Diff line change
Expand Up @@ -1002,21 +1002,41 @@ export const __unstableExpandSelection =
*/
export const mergeBlocks =
( firstBlockClientId, secondBlockClientId ) =>
( { select, dispatch } ) => {
( { registry, select, dispatch } ) => {
const blocks = [ firstBlockClientId, secondBlockClientId ];
dispatch( { type: 'MERGE_BLOCKS', blocks } );

const [ clientIdA, clientIdB ] = blocks;
const blockA = select.getBlock( clientIdA );
const blockAType = getBlockType( blockA.name );

// Only focus the previous block if it's not mergeable.
if ( ! blockAType ) return;

const blockB = select.getBlock( clientIdB );

if ( blockAType && ! blockAType.merge ) {
dispatch.selectBlock( blockA.clientId );
// If there's no merge function defined, attempt merging inner
// blocks.
const blocksWithTheSameType = switchToBlockType(
blockB,
blockAType.name
);
if ( blocksWithTheSameType?.length !== 1 ) return;
const [ blockWithSameType ] = blocksWithTheSameType;
registry.batch( () => {
dispatch.insertBlocks(
blockWithSameType.innerBlocks,
undefined,
clientIdA
);
dispatch.removeBlock( clientIdB );
dispatch.selectBlock(
blockWithSameType.innerBlocks[ 0 ].clientId
);
} );
return;
}

const blockB = select.getBlock( clientIdB );
const blockBType = getBlockType( blockB.name );
const { clientId, attributeKey, offset } = select.getSelectionStart();
const selectedBlockType =
Expand Down Expand Up @@ -1075,8 +1095,15 @@ export const mergeBlocks =
? [ cloneB ]
: switchToBlockType( cloneB, blockA.name );

// If the block types can not match, do nothing.
if ( ! blocksWithTheSameType || ! blocksWithTheSameType.length ) {
// Fall back to moving the block inside the previous
// block.
dispatch.moveBlocksToPosition(
[ clientIdA ],
select.getBlockRootClientId( clientIdA ),
clientIdB,
0
);
return;
}

Expand Down
4 changes: 4 additions & 0 deletions packages/e2e-tests/specs/editor/blocks/__snapshots__/quote.test.js.snap
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Original file line number Diff line number Diff line change
Expand Up @@ -114,6 +114,10 @@ exports[`Quote can be split at the end 2`] = `
"<!-- wp:quote -->
<blockquote class=\\"wp-block-quote\\"><!-- wp:paragraph -->
<p>1</p>
<!-- /wp:paragraph -->

<!-- wp:paragraph -->
<p></p>
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@ellatrix I think there should be a '2' here. The test types it, but it's missing. It looks like you may have committed the result of a failed test.

I've pushed a PR that updates the snapshot to its correct version - #43407. I expect the test is flakey and will still need to be fixed, but at least it won't be a false positive.

<!-- /wp:paragraph --></blockquote>
<!-- /wp:quote -->"
`;
3 changes: 2 additions & 1 deletion packages/e2e-tests/specs/editor/blocks/quote.test.js
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Expand Up @@ -143,8 +143,9 @@ describe( 'Quote', () => {
expect( await getEditedPostContent() ).toMatchSnapshot();

await page.keyboard.press( 'Backspace' );
await page.keyboard.type( '2' );

// Expect the paragraph to be deleted.
// Expect the paragraph to be merged into the quote block.
expect( await getEditedPostContent() ).toMatchSnapshot();
} );

Expand Down