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Split view with meta boxes even with legacy canvas #66706

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Dec 3, 2024
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8 changes: 3 additions & 5 deletions packages/block-editor/src/components/block-canvas/index.js
Original file line number Diff line number Diff line change
Expand Up @@ -56,7 +56,8 @@ export function ExperimentalBlockCanvas( {
return (
<BlockTools
__unstableContentRef={ localRef }
style={ { height, display: 'flex' } }
className="block-editor-block-canvas"
style={ { height } }
>
<EditorStyles
styles={ styles }
Expand All @@ -67,10 +68,6 @@ export function ExperimentalBlockCanvas( {
ref={ contentRef }
className="editor-styles-wrapper"
tabIndex={ -1 }
style={ {
height: '100%',
width: '100%',
} }
>
{ children }
</WritingFlow>
Expand All @@ -81,6 +78,7 @@ export function ExperimentalBlockCanvas( {
return (
<BlockTools
__unstableContentRef={ localRef }
className="block-editor-block-canvas"
style={ { height, display: 'flex' } }
>
<Iframe
Expand Down
23 changes: 5 additions & 18 deletions packages/edit-post/src/components/layout/index.js
Original file line number Diff line number Diff line change
Expand Up @@ -148,11 +148,7 @@ function useEditorStyles( ...additionalStyles ) {
] );
}

/**
* @param {Object} props
* @param {boolean} props.isLegacy True when the editor canvas is not in an iframe.
*/
function MetaBoxesMain( { isLegacy } ) {
function MetaBoxesMain() {
const [ isOpen, openHeight, hasAnyVisible ] = useSelect( ( select ) => {
const { get } = select( preferencesStore );
const { isMetaBoxLocationVisible } = select( editPostStore );
Expand Down Expand Up @@ -232,22 +228,15 @@ function MetaBoxesMain( { isLegacy } ) {

const contents = (
<div
className={ clsx(
// The class name 'edit-post-layout__metaboxes' is retained because some plugins use it.
'edit-post-layout__metaboxes',
! isLegacy && 'edit-post-meta-boxes-main__liner'
) }
hidden={ ! isLegacy && isShort && ! isOpen }
// The class name 'edit-post-layout__metaboxes' is retained because some plugins use it.
className="edit-post-layout__metaboxes edit-post-meta-boxes-main__liner"
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Can we combine two CSS classes into one?

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Well, I think since we have to keep edit-post-layout__metaboxes for the sake of plugins we could utilize only that one. Is that what you mean? I suppose that’d be fine.

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That's right. I thought it would be nice to remove the .edit-post-meta-boxes-main__liner selector and put these styles into the .edit-post-layout__metaboxes selector:

.edit-post-meta-boxes-main__liner {
overflow: auto;
// Keep the contents behind the resize handle or details summary.
isolation: isolate;
}
// In case the canvas is not iframe’d.
.edit-post-layout__metaboxes {
clear: both;
}

hidden={ isShort && ! isOpen }
>
<MetaBoxes location="normal" />
<MetaBoxes location="advanced" />
</div>
);

if ( isLegacy ) {
return contents;
}

const isAutoHeight = openHeight === undefined;
let usedMax = '50%'; // Approximation before max has a value.
if ( max !== undefined ) {
Expand Down Expand Up @@ -580,9 +569,7 @@ function Layout( {
}
extraContent={
! isDistractionFree &&
showMetaBoxes && (
<MetaBoxesMain isLegacy={ ! shouldIframe } />
)
showMetaBoxes && <MetaBoxesMain />
}
>
<PostLockedModal />
Expand Down
8 changes: 3 additions & 5 deletions packages/edit-post/src/components/layout/style.scss
Original file line number Diff line number Diff line change
Expand Up @@ -107,11 +107,9 @@
}

.has-metaboxes .editor-visual-editor {
flex: 1;

&.is-iframed {
isolation: isolate;
}
// Contains z-indexes of children so that the block toolbar will appear behind
// the drop shadow of the meta box pane.
isolation: isolate;
}

// Adjust the position of the notices
Expand Down
3 changes: 2 additions & 1 deletion packages/editor/src/components/editor-interface/style.scss
Original file line number Diff line number Diff line change
Expand Up @@ -8,5 +8,6 @@
}

.editor-visual-editor {
flex: 1 0 auto;
// Fits the height to the parent — flex-shrink ensures it doesn’t create overflow.
flex: 1 1 0%;
}
1 change: 1 addition & 0 deletions packages/editor/src/components/visual-editor/index.js
Original file line number Diff line number Diff line change
Expand Up @@ -385,6 +385,7 @@ function VisualEditor( {
'has-padding': isFocusedEntity || enableResizing,
'is-resizable': enableResizing,
'is-iframed': ! disableIframe,
'is-scrollable': disableIframe || deviceType !== 'Desktop',
}
) }
>
Expand Down
35 changes: 29 additions & 6 deletions packages/editor/src/components/visual-editor/style.scss
Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,9 @@
position: relative;
display: flex;
background-color: $gray-300;
// Allows the height to fit the parent container and avoids parent scrolling contexts from
// having overflow due to popovers of block tools.
overflow: hidden;

// Centralize the editor horizontally (flex-direction is column).
align-items: center;
Expand All @@ -14,12 +17,6 @@
padding: $grid-unit-30 $grid-unit-30 0;
}

// In the iframed canvas this keeps extra scrollbars from appearing (when block toolbars overflow). In the
// legacy (non-iframed) canvas, overflow must not be hidden in order to maintain support for sticky positioning.
&.is-iframed {
overflow: hidden;
}

// The button element easily inherits styles that are meant for the editor style.
// These rules enhance the specificity to reduce that inheritance.
// This is duplicated in edit-site.
Expand All @@ -33,4 +30,30 @@
padding: 6px;
}
}

// The cases for this are non-iframed editor canvas or previewing devices. The block canvas is
// made the scrolling context.
&.is-scrollable .block-editor-block-canvas {
overflow: auto;

// Applicable only when legacy (non-iframed).
> .block-editor-writing-flow {
display: flow-root;
min-height: 100%;
box-sizing: border-box; // Ensures that 100% min-height doesn’t create overflow.
}

// Applicable only when iframed. These styles ensure that if the the iframe is
// given a fixed height and it’s taller than the viewport then scrolling is
// allowed. This is needed for device previews.
> .block-editor-iframe__container {
display: flex;
flex-direction: column;

> .block-editor-iframe__scale-container {
flex: 1 0 fit-content;
display: flow-root;
}
}
}
}
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