@lobehub/editor
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A powerful and extensible rich text editor built on Meta's Lexical framework, providing a modern editing experience with React integration.
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JavaScript
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import { $isCodeHighlightNode, $isCodeNode } from '@lexical/code';
import { $isHeadingNode, QuoteNode } from '@lexical/rich-text';
import { mergeRegister } from '@lexical/utils';
import { $createNodeSelection, $createParagraphNode, $getRoot, $getSelection, $isDecoratorNode, $isElementNode, $isLineBreakNode, $isNodeSelection, $isRangeSelection, $isRootOrShadowRoot, $isTextNode, $setSelection, COMMAND_PRIORITY_EDITOR, COMMAND_PRIORITY_LOW, COMMAND_PRIORITY_NORMAL, FORMAT_TEXT_COMMAND, KEY_ARROW_DOWN_COMMAND, KEY_ARROW_RIGHT_COMMAND, KEY_ARROW_UP_COMMAND, KEY_BACKSPACE_COMMAND, REDO_COMMAND, UNDO_COMMAND } from 'lexical';
import { $closest } from "../../../editor-kernel";
import { HotkeyEnum } from "../../../types/hotkey";
import { createDebugLogger } from "../../../utils/debug";
var logger = createDebugLogger('plugin', 'common');
function resolveElement(element, isBackward, focusOffset) {
var parent = element.getParent();
var offset = focusOffset;
var block = element;
if (parent !== null) {
if (isBackward && focusOffset === 0) {
offset = block.getIndexWithinParent();
block = parent;
} else if (!isBackward && focusOffset === block.getChildrenSize()) {
offset = block.getIndexWithinParent() + 1;
block = parent;
}
}
return block.getChildAtIndex(isBackward ? offset - 1 : offset);
}
function isCodeNodeLastLine(focusNode) {
if (!$isCodeHighlightNode(focusNode)) {
return false;
}
var codeNode = focusNode.getParent();
if (!$isCodeNode(codeNode)) {
return false;
}
var last = codeNode.getLastChild();
do {
var _last;
if ($isLineBreakNode(last)) {
return false;
}
if (last === focusNode) {
return codeNode;
}
last = (_last = last) === null || _last === void 0 ? void 0 : _last.getPreviousSibling();
} while (last !== focusNode && last);
if (last === focusNode) {
return codeNode;
}
return false;
}
export function $getAdjacentNode(focus, isBackward) {
var focusOffset = focus.offset;
if (focus.type === 'element') {
var block = focus.getNode();
return resolveElement(block, isBackward, focusOffset);
} else {
var focusNode = focus.getNode();
if (isBackward && focusOffset === 0 || !isBackward && focusOffset === focusNode.getTextContentSize()) {
var possibleNode = isBackward ? focusNode.getPreviousSibling() : focusNode.getNextSibling();
if (possibleNode === null) {
return resolveElement(focusNode.getParentOrThrow(), isBackward, focusNode.getIndexWithinParent() + (isBackward ? 0 : 1));
}
return possibleNode;
} else if (!isBackward && isCodeNodeLastLine(focusNode)) {
var _focusNode$getParent;
return ((_focusNode$getParent = focusNode.getParent()) === null || _focusNode$getParent === void 0 ? void 0 : _focusNode$getParent.getNextSibling()) || null;
}
}
return null;
}
export function $getDownUpNode(focus, isUp) {
var focusNode = focus.getNode();
var blockParent = focusNode;
while (blockParent !== null && blockParent.isInline()) {
blockParent = blockParent.getParent();
}
if (!blockParent) {
return null;
}
var nextNode = isUp ? blockParent.getPreviousSibling() : blockParent.getNextSibling();
while (!nextNode && !$isRootOrShadowRoot(blockParent)) {
blockParent = blockParent.getParent();
if (!blockParent) {
return null;
}
nextNode = isUp ? blockParent.getPreviousSibling() : blockParent.getNextSibling();
}
if (!nextNode) {
return null;
}
return nextNode;
}
function $isSelectionAtEndOfRoot(selection) {
var focus = selection.focus;
return focus.key === 'root' && focus.offset === $getRoot().getChildrenSize();
}
export function registerHeaderBackspace(editor) {
return editor.registerCommand(KEY_BACKSPACE_COMMAND, function (payload) {
// Handle backspace key press for heading nodes
var headingNode = editor.getEditorState().read(function () {
var selection = $getSelection();
// Do not handle non-collapsed selection
if (!$isRangeSelection(selection) || !selection.isCollapsed()) {
return false;
}
var anchor = selection.anchor;
if (anchor.offset !== 0) {
return false;
}
var anchorNode = anchor.getNode();
if ($isTextNode(anchorNode)) {
// Do not handle non-leading text nodes
if (anchorNode.getPreviousSibling()) {
return false;
}
var parent = anchorNode.getParentOrThrow();
if (!$isHeadingNode(parent)) {
return false;
}
return parent;
}
if ($isHeadingNode(anchorNode)) {
return anchorNode;
}
return false;
});
if (headingNode) {
payload.stopImmediatePropagation();
payload.preventDefault();
payload.stopPropagation();
editor.update(function () {
var node = $createParagraphNode();
headingNode.replace(node, true);
node.select(0, 0);
});
return true;
}
return false;
}, COMMAND_PRIORITY_NORMAL);
}
export function registerRichKeydown(editor, kernel, options) {
var _ref = options || {},
_ref$enableHotkey = _ref.enableHotkey,
enableHotkey = _ref$enableHotkey === void 0 ? true : _ref$enableHotkey;
return mergeRegister(kernel.registerHotkey(HotkeyEnum.PasteAsPlainText, /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee() {
var text;
return _regeneratorRuntime().wrap(function _callee$(_context) {
while (1) switch (_context.prev = _context.next) {
case 0:
_context.prev = 0;
_context.next = 3;
return navigator.clipboard.readText();
case 3:
text = _context.sent;
editor.update(function () {
var selection = $getSelection();
if (!$isRangeSelection(selection)) return;
// Simply insert the plain text
selection.insertText(text);
});
_context.next = 10;
break;
case 7:
_context.prev = 7;
_context.t0 = _context["catch"](0);
logger.error('❌ Failed to paste as plain text:', _context.t0);
case 10:
case "end":
return _context.stop();
}
}, _callee, null, [[0, 7]]);
})), {
enabled: enableHotkey,
preventDefault: true,
stopPropagation: true
}), kernel.registerHotkey(HotkeyEnum.Bold, function () {
return editor.dispatchCommand(FORMAT_TEXT_COMMAND, 'bold');
}, {
enabled: enableHotkey,
preventDefault: true,
stopImmediatePropagation: true
}), kernel.registerHotkey(HotkeyEnum.Italic, function () {
return editor.dispatchCommand(FORMAT_TEXT_COMMAND, 'italic');
}, {
enabled: enableHotkey,
preventDefault: true,
stopImmediatePropagation: true
}), kernel.registerHotkey(HotkeyEnum.Underline, function () {
return editor.dispatchCommand(FORMAT_TEXT_COMMAND, 'underline');
}, {
enabled: enableHotkey,
preventDefault: true,
stopImmediatePropagation: true
}), kernel.registerHotkey(HotkeyEnum.Strikethrough, function () {
return editor.dispatchCommand(FORMAT_TEXT_COMMAND, 'strikethrough');
}, {
enabled: enableHotkey,
preventDefault: true,
stopImmediatePropagation: true
}), kernel.registerHotkey(HotkeyEnum.Undo, function () {
return editor.dispatchCommand(UNDO_COMMAND, undefined);
}, {
enabled: enableHotkey,
preventDefault: true,
stopImmediatePropagation: true
}), kernel.registerHotkey(HotkeyEnum.Redo, function () {
return editor.dispatchCommand(REDO_COMMAND, undefined);
}, {
enabled: enableHotkey,
preventDefault: true,
stopImmediatePropagation: true
}), kernel.registerHighCommand(KEY_ARROW_UP_COMMAND, function (event) {
var selection = $getSelection();
if ($isNodeSelection(selection)) {
// If selection is on a node, let's try and move selection
// back to being a range selection.
var nodes = selection.getNodes();
if (nodes.length > 0) {
nodes[0].selectPrevious();
event.preventDefault();
return true;
}
} else if ($isRangeSelection(selection)) {
var possibleNode = $getAdjacentNode(selection.focus, true);
var upblock = possibleNode || $getDownUpNode(selection.focus, true);
if (!event.shiftKey && $isDecoratorNode(possibleNode)) {
var nodeSelection = $createNodeSelection();
nodeSelection.add(possibleNode.getKey());
editor.update(function () {
$setSelection(nodeSelection);
});
event.preventDefault();
return true;
} else if (!event.shiftKey && $isDecoratorNode(upblock)) {
var _nodeSelection = $createNodeSelection();
_nodeSelection.add(upblock.getKey());
editor.update(function () {
$setSelection(_nodeSelection);
});
event.preventDefault();
return true;
} else if (possibleNode && possibleNode.getType() !== 'linebreak') {
possibleNode === null || possibleNode === void 0 || possibleNode.selectEnd();
event.preventDefault();
return true;
}
}
return false;
}, COMMAND_PRIORITY_EDITOR), kernel.registerHighCommand(KEY_ARROW_DOWN_COMMAND, function (event) {
var selection = $getSelection();
if ($isRangeSelection(selection)) {
if (!selection.isCollapsed()) {
return false;
}
var focusNode = selection.focus.getNode();
var quotaNode = $closest(focusNode, function (node) {
return node.getType() === QuoteNode.getType();
});
if (!quotaNode) {
return false;
}
if (quotaNode.getNextSibling()) {
return false;
}
var lastChild = quotaNode.getLastChild();
if (!lastChild) {
return false;
}
if (!$closest(focusNode, function (node) {
return node === lastChild;
})) {
return false;
}
event.preventDefault();
editor.update(function () {
var paragraph = $createParagraphNode();
quotaNode.insertAfter(paragraph);
paragraph.select();
});
return true;
}
return false;
}, COMMAND_PRIORITY_LOW), kernel.registerHighCommand(KEY_ARROW_DOWN_COMMAND, function (event) {
var selection = $getSelection();
if ($isNodeSelection(selection)) {
// If selection is on a node, let's try and move selection
// back to being a range selection.
var nodes = selection.getNodes();
if (nodes.length > 0) {
var node = nodes[0].getNextSibling();
if ($isRootOrShadowRoot(node)) {
var parent = node.getParent();
if (parent) {
var index = node.getIndexWithinParent();
parent.select(index, index);
event.preventDefault();
return true;
}
}
node === null || node === void 0 || node.selectStart();
// nodes[0].selectNext(0, 0);
event.preventDefault();
return true;
}
} else if ($isRangeSelection(selection)) {
if ($isSelectionAtEndOfRoot(selection)) {
event.preventDefault();
return true;
}
var possibleNode = $getAdjacentNode(selection.focus, false);
var upblock = possibleNode || $getDownUpNode(selection.focus, false);
if (!event.shiftKey && $isDecoratorNode(possibleNode)) {
var nodeSelection = $createNodeSelection();
nodeSelection.add(possibleNode.getKey());
editor.update(function () {
$setSelection(nodeSelection);
});
event.preventDefault();
return true;
} else if (!event.shiftKey && $isDecoratorNode(upblock)) {
var _nodeSelection2 = $createNodeSelection();
_nodeSelection2.add(upblock.getKey());
editor.update(function () {
$setSelection(_nodeSelection2);
});
event.preventDefault();
return true;
} else if (possibleNode && possibleNode.getType() !== 'linebreak') {
possibleNode === null || possibleNode === void 0 || possibleNode.selectStart();
event.preventDefault();
return true;
}
}
return false;
}, COMMAND_PRIORITY_EDITOR), kernel.registerHighCommand(KEY_ARROW_RIGHT_COMMAND, function (event) {
var selection = $getSelection();
if ($isRangeSelection(selection)) {
var _focusNode$getChildAt;
var focusNode = selection.focus.getNode();
if ($isElementNode(focusNode) && ((_focusNode$getChildAt = focusNode.getChildAtIndex(selection.focus.offset)) === null || _focusNode$getChildAt === void 0 ? void 0 : _focusNode$getChildAt.getType()) === 'table') {
var _focusNode$getChildAt2;
(_focusNode$getChildAt2 = focusNode.getChildAtIndex(selection.focus.offset)) === null || _focusNode$getChildAt2 === void 0 || _focusNode$getChildAt2.selectStart();
event.preventDefault();
return true;
}
} else if ($isNodeSelection(selection)) {
var nodes = selection.getNodes();
if (nodes.length > 0) {
var node = nodes[0].getNextSibling();
if ($isRootOrShadowRoot(node)) {
var parent = node.getParent();
if (parent) {
var index = node.getIndexWithinParent();
parent.select(index, index);
event.preventDefault();
return true;
}
}
}
}
return false;
}, COMMAND_PRIORITY_EDITOR));
}
var NEEDS_FOLLOWING_PARAGRAPH_TYPES = new Set(['code', 'table', 'block-image']);
export function registerLastElement(editor) {
var isProcessing = false;
return editor.registerUpdateListener(function (_ref3) {
var dirtyElements = _ref3.dirtyElements;
if (!editor.isEditable()) {
return;
}
// Only process when root node or its direct children have changes
if (!dirtyElements.has('root') && !Array.from(dirtyElements.keys()).some(function (key) {
var _node$getParent;
var node = editor.getEditorState()._nodeMap.get(key);
return (node === null || node === void 0 || (_node$getParent = node.getParent()) === null || _node$getParent === void 0 ? void 0 : _node$getParent.getKey()) === 'root';
})) {
return;
}
if (isProcessing) return;
var needsParagraph = editor.getEditorState().read(function () {
var root = $getRoot();
var lastChild = root.getLastChild();
// Check if the last element needs a trailing paragraph
return NEEDS_FOLLOWING_PARAGRAPH_TYPES.has(lastChild === null || lastChild === void 0 ? void 0 : lastChild.getType());
});
if (needsParagraph) {
isProcessing = true;
queueMicrotask(function () {
editor.update(function () {
var root = $getRoot();
var currentLast = root.getLastChild();
// Double check to ensure the state still needs processing
if (NEEDS_FOLLOWING_PARAGRAPH_TYPES.has(currentLast === null || currentLast === void 0 ? void 0 : currentLast.getType())) {
var paragraph = $createParagraphNode();
root.append(paragraph);
}
isProcessing = false;
});
});
}
});
}