@wordpress/block-editor
Version:
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JavaScript
// packages/block-editor/src/hooks/spacing-visualizer.js
import { useState, useRef, useEffect, useReducer } from "@wordpress/element";
import isShallowEqual from "@wordpress/is-shallow-equal";
import BlockPopoverCover from "../components/block-popover/cover";
import { useBlockElement } from "../components/block-list/use-block-props/use-block-refs";
import { jsx } from "react/jsx-runtime";
function SpacingVisualizer({ clientId, value, computeStyle, forceShow }) {
const blockElement = useBlockElement(clientId);
const [style, updateStyle] = useReducer(
() => computeStyle(blockElement)
);
useEffect(() => {
if (blockElement && forceShow) {
updateStyle();
}
}, [blockElement, forceShow]);
useEffect(() => {
if (!blockElement) {
return;
}
const observer = new window.MutationObserver(updateStyle);
observer.observe(blockElement, {
attributes: true,
attributeFilter: ["style", "class"]
});
return () => {
observer.disconnect();
};
}, [blockElement]);
const previousValueRef = useRef(value);
const [isActive, setIsActive] = useState(false);
useEffect(() => {
if (isShallowEqual(value, previousValueRef.current) || forceShow) {
return;
}
setIsActive(true);
previousValueRef.current = value;
const timeout = setTimeout(() => {
setIsActive(false);
}, 400);
return () => {
setIsActive(false);
clearTimeout(timeout);
};
}, [value, forceShow]);
if (!isActive && !forceShow) {
return null;
}
return /* @__PURE__ */ jsx(
BlockPopoverCover,
{
clientId,
__unstablePopoverSlot: "block-toolbar",
children: /* @__PURE__ */ jsx("div", { className: "block-editor__spacing-visualizer", style })
}
);
}
function getComputedCSS(element, property) {
return element.ownerDocument.defaultView.getComputedStyle(element).getPropertyValue(property);
}
function MarginVisualizer({ clientId, value, forceShow }) {
return /* @__PURE__ */ jsx(
SpacingVisualizer,
{
clientId,
value: value?.spacing?.margin,
computeStyle: (blockElement) => {
const top = getComputedCSS(blockElement, "margin-top");
const right = getComputedCSS(blockElement, "margin-right");
const bottom = getComputedCSS(blockElement, "margin-bottom");
const left = getComputedCSS(blockElement, "margin-left");
return {
borderTopWidth: top,
borderRightWidth: right,
borderBottomWidth: bottom,
borderLeftWidth: left,
top: top ? `-${top}` : 0,
right: right ? `-${right}` : 0,
bottom: bottom ? `-${bottom}` : 0,
left: left ? `-${left}` : 0
};
},
forceShow
}
);
}
function PaddingVisualizer({ clientId, value, forceShow }) {
return /* @__PURE__ */ jsx(
SpacingVisualizer,
{
clientId,
value: value?.spacing?.padding,
computeStyle: (blockElement) => ({
borderTopWidth: getComputedCSS(blockElement, "padding-top"),
borderRightWidth: getComputedCSS(
blockElement,
"padding-right"
),
borderBottomWidth: getComputedCSS(
blockElement,
"padding-bottom"
),
borderLeftWidth: getComputedCSS(blockElement, "padding-left")
}),
forceShow
}
);
}
export {
MarginVisualizer,
PaddingVisualizer
};
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