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spacing.js
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Fri, Jan 24, 18:36

spacing.js
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import responsivePropType from './responsivePropType';
import { handleBreakpoints } from './breakpoints';
import { getPath } from './style';
import merge from './merge';
import memoize from './memoize';
const properties = {
m: 'margin',
p: 'padding'
};
const directions = {
t: 'Top',
r: 'Right',
b: 'Bottom',
l: 'Left',
x: ['Left', 'Right'],
y: ['Top', 'Bottom']
};
const aliases = {
marginX: 'mx',
marginY: 'my',
paddingX: 'px',
paddingY: 'py'
};
// memoize() impact:
// From 300,000 ops/sec
// To 350,000 ops/sec
const getCssProperties = memoize(prop => {
// It's not a shorthand notation.
if (prop.length > 2) {
if (aliases[prop]) {
prop = aliases[prop];
} else {
return [prop];
}
}
const [a, b] = prop.split('');
const property = properties[a];
const direction = directions[b] || '';
return Array.isArray(direction) ? direction.map(dir => property + dir) : [property + direction];
});
export const marginKeys = ['m', 'mt', 'mr', 'mb', 'ml', 'mx', 'my', 'margin', 'marginTop', 'marginRight', 'marginBottom', 'marginLeft', 'marginX', 'marginY', 'marginInline', 'marginInlineStart', 'marginInlineEnd', 'marginBlock', 'marginBlockStart', 'marginBlockEnd'];
export const paddingKeys = ['p', 'pt', 'pr', 'pb', 'pl', 'px', 'py', 'padding', 'paddingTop', 'paddingRight', 'paddingBottom', 'paddingLeft', 'paddingX', 'paddingY', 'paddingInline', 'paddingInlineStart', 'paddingInlineEnd', 'paddingBlock', 'paddingBlockStart', 'paddingBlockEnd'];
const spacingKeys = [...marginKeys, ...paddingKeys];
export function createUnaryUnit(theme, themeKey, defaultValue, propName) {
const themeSpacing = getPath(theme, themeKey, false) ?? defaultValue;
if (typeof themeSpacing === 'number') {
return abs => {
if (typeof abs === 'string') {
return abs;
}
if (process.env.NODE_ENV !== 'production') {
if (typeof abs !== 'number') {
console.error(`MUI: Expected ${propName} argument to be a number or a string, got ${abs}.`);
}
}
return themeSpacing * abs;
};
}
if (Array.isArray(themeSpacing)) {
return abs => {
if (typeof abs === 'string') {
return abs;
}
if (process.env.NODE_ENV !== 'production') {
if (!Number.isInteger(abs)) {
console.error([`MUI: The \`theme.${themeKey}\` array type cannot be combined with non integer values.` + `You should either use an integer value that can be used as index, or define the \`theme.${themeKey}\` as a number.`].join('\n'));
} else if (abs > themeSpacing.length - 1) {
console.error([`MUI: The value provided (${abs}) overflows.`, `The supported values are: ${JSON.stringify(themeSpacing)}.`, `${abs} > ${themeSpacing.length - 1}, you need to add the missing values.`].join('\n'));
}
}
return themeSpacing[abs];
};
}
if (typeof themeSpacing === 'function') {
return themeSpacing;
}
if (process.env.NODE_ENV !== 'production') {
console.error([`MUI: The \`theme.${themeKey}\` value (${themeSpacing}) is invalid.`, 'It should be a number, an array or a function.'].join('\n'));
}
return () => undefined;
}
export function createUnarySpacing(theme) {
return createUnaryUnit(theme, 'spacing', 8, 'spacing');
}
export function getValue(transformer, propValue) {
if (typeof propValue === 'string' || propValue == null) {
return propValue;
}
const abs = Math.abs(propValue);
const transformed = transformer(abs);
if (propValue >= 0) {
return transformed;
}
if (typeof transformed === 'number') {
return -transformed;
}
return `-${transformed}`;
}
export function getStyleFromPropValue(cssProperties, transformer) {
return propValue => cssProperties.reduce((acc, cssProperty) => {
acc[cssProperty] = getValue(transformer, propValue);
return acc;
}, {});
}
function resolveCssProperty(props, keys, prop, transformer) {
// Using a hash computation over an array iteration could be faster, but with only 28 items,
// it's doesn't worth the bundle size.
if (keys.indexOf(prop) === -1) {
return null;
}
const cssProperties = getCssProperties(prop);
const styleFromPropValue = getStyleFromPropValue(cssProperties, transformer);
const propValue = props[prop];
return handleBreakpoints(props, propValue, styleFromPropValue);
}
function style(props, keys) {
const transformer = createUnarySpacing(props.theme);
return Object.keys(props).map(prop => resolveCssProperty(props, keys, prop, transformer)).reduce(merge, {});
}
export function margin(props) {
return style(props, marginKeys);
}
margin.propTypes = process.env.NODE_ENV !== 'production' ? marginKeys.reduce((obj, key) => {
obj[key] = responsivePropType;
return obj;
}, {}) : {};
margin.filterProps = marginKeys;
export function padding(props) {
return style(props, paddingKeys);
}
padding.propTypes = process.env.NODE_ENV !== 'production' ? paddingKeys.reduce((obj, key) => {
obj[key] = responsivePropType;
return obj;
}, {}) : {};
padding.filterProps = paddingKeys;
function spacing(props) {
return style(props, spacingKeys);
}
spacing.propTypes = process.env.NODE_ENV !== 'production' ? spacingKeys.reduce((obj, key) => {
obj[key] = responsivePropType;
return obj;
}, {}) : {};
spacing.filterProps = spacingKeys;
export default spacing;

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