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Implement suitable fallback for Nav block on front end of site when no menu selected #36724

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Merged
getdave merged 10 commits into from
Nov 22, 2021
Merged

Implement suitable fallback for Nav block on front end of site when no menu selected #36724

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a19025b
Use get_pages as block fallback
getdave Nov 22, 2021
778dcb5
Simplify by using page list block
getdave Nov 22, 2021
b457a91
Output special class when rendering the fallback
getdave Nov 22, 2021
34705d8
Remove requirement for parsing the block
getdave Nov 22, 2021
bbe6841
Fix linting
getdave Nov 22, 2021
eb70667
Limit max number of pages to 4 via context API
getdave Nov 22, 2021
337a8ac
2nd attempt to fix PHP linting
getdave Nov 22, 2021
df146db
Revert debugging
getdave Nov 22, 2021
ee5d0db
Make attribute/context prop "unstable"
getdave Nov 22, 2021
24b160c
More linting
getdave Nov 22, 2021
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6 changes: 5 additions & 1 deletion packages/block-library/src/navigation/block.json
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Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,9 @@
},
"customOverlayTextColor": {
"type": "string"
},
"__unstableMaxPages": {
"type": "number"
}
},
"usesContext": [ "navigationArea" ],
Expand All @@ -72,7 +75,8 @@
"showSubmenuIcon": "showSubmenuIcon",
"openSubmenusOnClick": "openSubmenusOnClick",
"style": "style",
"orientation": "orientation"
"orientation": "orientation",
"__unstableMaxPages": "__unstableMaxPages"
},
"supports": {
"align": [ "wide", "full" ],
Expand Down
16 changes: 14 additions & 2 deletions packages/block-library/src/navigation/index.php
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Expand Up @@ -142,6 +142,8 @@ function block_core_navigation_render_submenu_icon() {
* @return string Returns the post content with the legacy widget added.
*/
function render_block_core_navigation( $attributes, $content, $block ) {

$is_fallback = false;
/**
* Deprecated:
* The rgbTextColor and rgbBackgroundColor attributes
Expand Down Expand Up @@ -214,8 +216,17 @@ function( $block ) {
$inner_blocks = new WP_Block_List( $compacted_blocks, $attributes );
}

// If there are no inner blocks then fallback to rendering the Page List block.
if ( empty( $inner_blocks ) ) {
return '';
$is_fallback = true; // indicate we are rendering the fallback.
$attributes['__unstableMaxPages'] = 4; // set value to be passed as context to Page List block.

$page_list_block = array(
'blockName' => 'core/page-list',
'attrs' => array(),
);

$inner_blocks = new WP_Block_List( array( $page_list_block ), $attributes );
}

// Restore legacy classnames for submenu positioning.
Expand All @@ -234,7 +245,8 @@ function( $block ) {
$colors['css_classes'],
$font_sizes['css_classes'],
$is_responsive_menu ? array( 'is-responsive' ) : array(),
$layout_class ? array( $layout_class ) : array()
$layout_class ? array( $layout_class ) : array(),
$is_fallback ? array( 'is-fallback' ) : array()
);

$inner_blocks_html = '';
Expand Down
3 changes: 2 additions & 1 deletion packages/block-library/src/page-list/block.json
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,8 @@
"customFontSize",
"showSubmenuIcon",
"style",
"openSubmenusOnClick"
"openSubmenusOnClick",
"__unstableMaxPages"
],
"supports": {
"reusable": false,
Expand Down
4 changes: 4 additions & 0 deletions packages/block-library/src/page-list/index.php
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Original file line number Diff line number Diff line change
Expand Up @@ -293,6 +293,10 @@ function render_block_core_page_list( $attributes, $content, $block ) {

$nested_pages = block_core_page_list_nest_pages( $top_level_pages, $pages_with_children );

if ( array_key_exists( '__unstableMaxPages', $block->context ) ) {
$nested_pages = array_slice( $nested_pages, 0, $block->context['__unstableMaxPages'] );
}

$is_navigation_child = array_key_exists( 'showSubmenuIcon', $block->context );

$open_submenus_on_click = array_key_exists( 'openSubmenusOnClick', $block->context ) ? $block->context['openSubmenusOnClick'] : false;
Expand Down