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font-size.js
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/**
* WordPress dependencies
*/
import { addFilter } from '@wordpress/hooks';
import { hasBlockSupport } from '@wordpress/blocks';
import TokenList from '@wordpress/token-list';
import { select } from '@wordpress/data';
/**
* Internal dependencies
*/
import {
getFontSize,
getFontSizeClass,
getFontSizeObjectByValue,
FontSizePicker,
} from '../components/font-sizes';
import { TYPOGRAPHY_SUPPORT_KEY } from './typography';
import {
cleanEmptyObject,
transformStyles,
shouldSkipSerialization,
} from './utils';
import { useSettings } from '../components/use-settings';
import { store as blockEditorStore } from '../store';
import {
getTypographyFontSizeValue,
getFluidTypographyOptionsFromSettings,
} from '../components/global-styles/typography-utils';
export const FONT_SIZE_SUPPORT_KEY = 'typography.fontSize';
/**
* Filters registered block settings, extending attributes to include
* `fontSize` and `fontWeight` attributes.
*
* @param {Object} settings Original block settings.
*
* @return {Object} Filtered block settings.
*/
function addAttributes( settings ) {
if ( ! hasBlockSupport( settings, FONT_SIZE_SUPPORT_KEY ) ) {
return settings;
}
// Allow blocks to specify a default value if needed.
if ( ! settings.attributes.fontSize ) {
Object.assign( settings.attributes, {
fontSize: {
type: 'string',
},
} );
}
return settings;
}
/**
* Override props assigned to save component to inject font size.
*
* @param {Object} props Additional props applied to save element.
* @param {Object} blockNameOrType Block type.
* @param {Object} attributes Block attributes.
*
* @return {Object} Filtered props applied to save element.
*/
function addSaveProps( props, blockNameOrType, attributes ) {
if ( ! hasBlockSupport( blockNameOrType, FONT_SIZE_SUPPORT_KEY ) ) {
return props;
}
if (
shouldSkipSerialization(
blockNameOrType,
TYPOGRAPHY_SUPPORT_KEY,
'fontSize'
)
) {
return props;
}
// Use TokenList to dedupe classes.
const classes = new TokenList( props.className );
classes.add( getFontSizeClass( attributes.fontSize ) );
const newClassName = classes.value;
props.className = newClassName ? newClassName : undefined;
return props;
}
/**
* Inspector control panel containing the font size related configuration
*
* @param {Object} props
*
* @return {Element} Font size edit element.
*/
export function FontSizeEdit( props ) {
const {
attributes: { fontSize, style },
setAttributes,
} = props;
const [ fontSizes ] = useSettings( 'typography.fontSizes' );
const onChange = ( value ) => {
const fontSizeSlug = getFontSizeObjectByValue( fontSizes, value ).slug;
setAttributes( {
style: cleanEmptyObject( {
...style,
typography: {
...style?.typography,
fontSize: fontSizeSlug ? undefined : value,
},
} ),
fontSize: fontSizeSlug,
} );
};
const fontSizeObject = getFontSize(
fontSizes,
fontSize,
style?.typography?.fontSize
);
const fontSizeValue =
fontSizeObject?.size || style?.typography?.fontSize || fontSize;
return (
<FontSizePicker
onChange={ onChange }
value={ fontSizeValue }
withReset={ false }
withSlider
size="__unstable-large"
__nextHasNoMarginBottom
/>
);
}
/**
* Custom hook that checks if font-size settings have been disabled.
*
* @param {string} name The name of the block.
* @return {boolean} Whether setting is disabled.
*/
export function useIsFontSizeDisabled( { name: blockName } = {} ) {
const [ fontSizes ] = useSettings( 'typography.fontSizes' );
const hasFontSizes = !! fontSizes?.length;
return (
! hasBlockSupport( blockName, FONT_SIZE_SUPPORT_KEY ) || ! hasFontSizes
);
}
function useBlockProps( { name, fontSize, style } ) {
const [ fontSizes ] = useSettings( 'typography.fontSizes' );
// Only add inline styles if the block supports font sizes,
// doesn't skip serialization of font sizes,
// doesn't already have an inline font size,
// and does have a class to extract the font size from.
if (
! hasBlockSupport( name, FONT_SIZE_SUPPORT_KEY ) ||
shouldSkipSerialization( name, TYPOGRAPHY_SUPPORT_KEY, 'fontSize' ) ||
! fontSize
) {
return;
}
let props = {};
if ( ! style?.typography?.fontSize ) {
props = {
style: {
fontSize: getFontSize(
fontSizes,
fontSize,
style?.typography?.fontSize
).size,
},
};
}
// TODO: This sucks! We should be using useSetting( 'typography.fluid' )
// or even useSelect( blockEditorStore ). We can't do either here
// because getEditWrapperProps is a plain JavaScript function called by
// BlockListBlock and not a React component rendered within
// BlockListContext.Provider. If we set fontSize using editor.
// BlockListBlock instead of using getEditWrapperProps then the value is
// clobbered when the core/style/addEditProps filter runs.
// TODO: We can do the thing above now.
const fluidTypographySettings = getFluidTypographyOptionsFromSettings(
select( blockEditorStore ).getSettings().__experimentalFeatures
);
if ( fontSize ) {
props = {
style: {
fontSize: getTypographyFontSizeValue(
{ size: fontSize },
fluidTypographySettings
),
},
};
}
return addSaveProps( props, name, { fontSize } );
}
export default {
useBlockProps,
addSaveProps,
attributeKeys: [ 'fontSize', 'style' ],
hasSupport( name ) {
return hasBlockSupport( name, FONT_SIZE_SUPPORT_KEY );
},
};
const MIGRATION_PATHS = {
fontSize: [ [ 'fontSize' ], [ 'style', 'typography', 'fontSize' ] ],
};
function addTransforms( result, source, index, results ) {
const destinationBlockType = result.name;
const activeSupports = {
fontSize: hasBlockSupport(
destinationBlockType,
FONT_SIZE_SUPPORT_KEY
),
};
return transformStyles(
activeSupports,
MIGRATION_PATHS,
result,
source,
index,
results
);
}
addFilter(
'blocks.registerBlockType',
'core/font/addAttribute',
addAttributes
);
addFilter(
'blocks.switchToBlockType.transformedBlock',
'core/font-size/addTransforms',
addTransforms
);