@wordpress/block-editor
Version:
231 lines (230 loc) • 8.76 kB
JavaScript
// packages/block-editor/src/components/list-view/drop-indicator.js
import clsx from "clsx";
import {
__experimentalHStack as HStack,
__experimentalTruncate as Truncate,
Popover
} from "@wordpress/components";
import { getScrollContainer } from "@wordpress/dom";
import { useCallback, useMemo } from "@wordpress/element";
import { isRTL } from "@wordpress/i18n";
import BlockIcon from "../block-icon";
import useBlockDisplayInformation from "../use-block-display-information";
import useBlockDisplayTitle from "../block-title/use-block-display-title";
import ListViewExpander from "./expander";
import { jsx, jsxs } from "react/jsx-runtime";
function ListViewDropIndicatorPreview({
draggedBlockClientId,
listViewRef,
blockDropTarget
}) {
const blockInformation = useBlockDisplayInformation(draggedBlockClientId);
const blockTitle = useBlockDisplayTitle({
clientId: draggedBlockClientId,
context: "list-view"
});
const { rootClientId, clientId, dropPosition } = blockDropTarget || {};
const [rootBlockElement, blockElement] = useMemo(() => {
if (!listViewRef.current) {
return [];
}
const _rootBlockElement = rootClientId ? listViewRef.current.querySelector(
`[data-block="${rootClientId}"]`
) : void 0;
const _blockElement = clientId ? listViewRef.current.querySelector(
`[data-block="${clientId}"]`
) : void 0;
return [_rootBlockElement, _blockElement];
}, [listViewRef, rootClientId, clientId]);
const targetElement = blockElement || rootBlockElement;
const rtl = isRTL();
const getDropIndicatorWidth = useCallback(
(targetElementRect, indent) => {
if (!targetElement) {
return 0;
}
let width = targetElement.offsetWidth;
const scrollContainer = getScrollContainer(
targetElement,
"horizontal"
);
const ownerDocument = targetElement.ownerDocument;
const windowScroll = scrollContainer === ownerDocument.body || scrollContainer === ownerDocument.documentElement;
if (scrollContainer && !windowScroll) {
const scrollContainerRect = scrollContainer.getBoundingClientRect();
const distanceBetweenContainerAndTarget = isRTL() ? scrollContainerRect.right - targetElementRect.right : targetElementRect.left - scrollContainerRect.left;
const scrollContainerWidth = scrollContainer.clientWidth;
if (scrollContainerWidth < width + distanceBetweenContainerAndTarget) {
width = scrollContainerWidth - distanceBetweenContainerAndTarget;
}
if (!rtl && targetElementRect.left + indent < scrollContainerRect.left) {
width -= scrollContainerRect.left - targetElementRect.left;
return width;
}
if (rtl && targetElementRect.right - indent > scrollContainerRect.right) {
width -= targetElementRect.right - scrollContainerRect.right;
return width;
}
}
return width - indent;
},
[rtl, targetElement]
);
const style = useMemo(() => {
if (!targetElement) {
return {};
}
const targetElementRect = targetElement.getBoundingClientRect();
return {
width: getDropIndicatorWidth(targetElementRect, 0)
};
}, [getDropIndicatorWidth, targetElement]);
const horizontalScrollOffsetStyle = useMemo(() => {
if (!targetElement) {
return {};
}
const scrollContainer = getScrollContainer(targetElement);
const ownerDocument = targetElement.ownerDocument;
const windowScroll = scrollContainer === ownerDocument.body || scrollContainer === ownerDocument.documentElement;
if (scrollContainer && !windowScroll) {
const scrollContainerRect = scrollContainer.getBoundingClientRect();
const targetElementRect = targetElement.getBoundingClientRect();
const distanceBetweenContainerAndTarget = rtl ? scrollContainerRect.right - targetElementRect.right : targetElementRect.left - scrollContainerRect.left;
if (!rtl && scrollContainerRect.left > targetElementRect.left) {
return {
transform: `translateX( ${distanceBetweenContainerAndTarget}px )`
};
}
if (rtl && scrollContainerRect.right < targetElementRect.right) {
return {
transform: `translateX( ${distanceBetweenContainerAndTarget * -1}px )`
};
}
}
return {};
}, [rtl, targetElement]);
const ariaLevel = useMemo(() => {
if (!rootBlockElement) {
return 1;
}
const _ariaLevel = parseInt(
rootBlockElement.getAttribute("aria-level"),
10
);
return _ariaLevel ? _ariaLevel + 1 : 1;
}, [rootBlockElement]);
const hasAdjacentSelectedBranch = useMemo(() => {
if (!targetElement) {
return false;
}
return targetElement.classList.contains("is-branch-selected");
}, [targetElement]);
const popoverAnchor = useMemo(() => {
const isValidDropPosition = dropPosition === "top" || dropPosition === "bottom" || dropPosition === "inside";
if (!targetElement || !isValidDropPosition) {
return void 0;
}
return {
contextElement: targetElement,
getBoundingClientRect() {
const rect = targetElement.getBoundingClientRect();
let left = rect.left;
let top = 0;
const scrollContainer = getScrollContainer(
targetElement,
"horizontal"
);
const doc = targetElement.ownerDocument;
const windowScroll = scrollContainer === doc.body || scrollContainer === doc.documentElement;
if (scrollContainer && !windowScroll) {
const scrollContainerRect = scrollContainer.getBoundingClientRect();
const scrollbarWidth = rtl ? scrollContainer.offsetWidth - scrollContainer.clientWidth : 0;
if (left < scrollContainerRect.left + scrollbarWidth) {
left = scrollContainerRect.left + scrollbarWidth;
}
}
if (dropPosition === "top") {
top = rect.top - rect.height * 2;
} else {
top = rect.top;
}
const width = getDropIndicatorWidth(rect, 0);
const height = rect.height;
return new window.DOMRect(left, top, width, height);
}
};
}, [targetElement, dropPosition, getDropIndicatorWidth, rtl]);
if (!targetElement) {
return null;
}
return /* @__PURE__ */ jsx(
Popover,
{
animate: false,
anchor: popoverAnchor,
focusOnMount: false,
className: "block-editor-list-view-drop-indicator--preview",
variant: "unstyled",
flip: false,
resize: true,
children: /* @__PURE__ */ jsx(
"div",
{
style,
className: clsx(
"block-editor-list-view-drop-indicator__line",
{
"block-editor-list-view-drop-indicator__line--darker": hasAdjacentSelectedBranch
}
),
children: /* @__PURE__ */ jsxs(
"div",
{
className: "block-editor-list-view-leaf",
"aria-level": ariaLevel,
children: [
/* @__PURE__ */ jsxs(
"div",
{
className: clsx(
"block-editor-list-view-block-select-button",
"block-editor-list-view-block-contents"
),
style: horizontalScrollOffsetStyle,
children: [
/* @__PURE__ */ jsx(ListViewExpander, { onClick: () => {
} }),
/* @__PURE__ */ jsx(
BlockIcon,
{
icon: blockInformation?.icon,
showColors: true,
context: "list-view"
}
),
/* @__PURE__ */ jsx(
HStack,
{
alignment: "center",
className: "block-editor-list-view-block-select-button__label-wrapper",
justify: "flex-start",
spacing: 1,
children: /* @__PURE__ */ jsx("span", { className: "block-editor-list-view-block-select-button__title", children: /* @__PURE__ */ jsx(Truncate, { ellipsizeMode: "auto", children: blockTitle }) })
}
)
]
}
),
/* @__PURE__ */ jsx("div", { className: "block-editor-list-view-block__menu-cell" })
]
}
)
}
)
}
);
}
export {
ListViewDropIndicatorPreview as default
};
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