feat(lexical): add declarative rich text editor

Introduce @workspace/lexical with composable actions, toolbars, embeds, rich-text nodes, media uploads, selection utilities, HTML serialization, and theme styling.\n\nLocalize built-in controls through MessageDescriptor catalogs for English and Simplified Chinese, while providing an English I18nProvider fallback for standalone editor use. Include focused unit coverage for actions, controls, serialization, plugins, public API, and catalogs.
2026-07-31 15:07:09 +08:00
parent 1fe9c1021a
commit 0d817537be
65 changed files with 7453 additions and 0 deletions
@@ -0,0 +1,78 @@
+import type { LexicalEditor } from "lexical"
+
+export interface SelectionAnchor {
+  contextElement: HTMLElement
+  getBoundingClientRect: () => DOMRect
+}
+
+export function runWithEditorFocus(
+  editor: LexicalEditor,
+  callback: VoidFunction
+) {
+  const rootElement = editor.getRootElement()
+  if (!rootElement) return
+
+  const document = rootElement.ownerDocument
+  const selection = document.defaultView?.getSelection()
+  const selectionIsInside =
+    selection?.focusNode != null && rootElement.contains(selection.focusNode)
+  const focusIsInside =
+    document.activeElement != null &&
+    rootElement.contains(document.activeElement)
+
+  if (selectionIsInside && focusIsInside) {
+    callback()
+    return
+  }
+
+  editor.focus(callback)
+}
+
+export function createSelectionAnchor(
+  rootElement: HTMLElement
+): HTMLElement | SelectionAnchor {
+  const document = rootElement.ownerDocument
+  const domSelection = document.defaultView?.getSelection()
+  const focusNode = domSelection?.focusNode
+  let range: Range | null = null
+
+  if (focusNode && rootElement.contains(focusNode)) {
+    try {
+      range = document.createRange()
+      range.setStart(focusNode, domSelection.focusOffset)
+      range.collapse(true)
+    } catch {
+      range = null
+    }
+  }
+
+  if (!range) return rootElement
+  const selectionRange = range
+
+  return {
+    contextElement: rootElement,
+    getBoundingClientRect: () => {
+      const rangeRect =
+        typeof selectionRange.getBoundingClientRect === "function"
+          ? selectionRange.getBoundingClientRect()
+          : null
+
+      if (
+        rangeRect &&
+        (rangeRect.width > 0 ||
+          rangeRect.height > 0 ||
+          rangeRect.x !== 0 ||
+          rangeRect.y !== 0)
+      ) {
+        return rangeRect
+      }
+
+      const clientRects =
+        typeof selectionRange.getClientRects === "function"
+          ? Array.from(selectionRange.getClientRects())
+          : []
+
+      return clientRects.at(-1) ?? rootElement.getBoundingClientRect()
+    },
+  }
+}