| 1 | import { cn } from "@/lib/utils"; |
| 2 | import { baseKeymap, toggleMark } from "prosemirror-commands"; |
| 3 | import { history, redo, undo } from "prosemirror-history"; |
| 4 | import { keymap } from "prosemirror-keymap"; |
| 5 | import { |
| 6 | defaultMarkdownParser, |
| 7 | defaultMarkdownSerializer, |
| 8 | } from "prosemirror-markdown"; |
| 9 | import { EditorState } from "prosemirror-state"; |
| 10 | import { EditorView } from "prosemirror-view"; |
| 11 | import type React from "react"; |
| 12 | import { useCallback, useEffect, useRef, useState } from "react"; |
| 13 | import FloatingToolbar from "./FloatingToolbar"; |
| 14 | import mySchema from "./ProseMirrorSchema"; |
| 15 | |
| 16 | interface ProseMirrorEditorProps { |
| 17 | content: string; |
| 18 | onChange: (content: string) => void; |
| 19 | isEditing: boolean; |
| 20 | onChangeState?: (hasChanges: boolean) => void; |
| 21 | onBlur?: () => void; |
| 22 | className?: string; |
| 23 | showFloatingToolbar?: boolean; |
| 24 | } |
| 25 | |
| 26 | const ProseMirrorEditor: React.FC<ProseMirrorEditorProps> = ({ |
| 27 | content, |
| 28 | onChange, |
| 29 | isEditing, |
| 30 | onChangeState, |
| 31 | onBlur, |
| 32 | className, |
| 33 | showFloatingToolbar = true, |
| 34 | }) => { |
| 35 | const editorRef = useRef<HTMLDivElement>(null); |
| 36 | const viewRef = useRef<EditorView | null>(null); |
| 37 | const originalContentRef = useRef(content); |
| 38 | const toolbarTimeoutRef = useRef<NodeJS.Timeout | null>(null); |
| 39 | const [toolbarState, setToolbarState] = useState({ |
| 40 | isVisible: false, |
| 41 | top: 0, |
| 42 | left: 0, |
| 43 | }); |
| 44 | |
| 45 | const checkForChanges = (newContent: string) => { |
| 46 | const hasChanges = newContent !== originalContentRef.current; |
| 47 | onChangeState?.(hasChanges); |
| 48 | }; |
| 49 | |
| 50 | const updateToolbarPosition = useCallback((view: EditorView) => { |
| 51 | const { from, to } = view.state.selection; |
| 52 | |
| 53 | if (from === to) { |
| 54 | setToolbarState((prev) => ({ ...prev, isVisible: false })); |
| 55 | if (toolbarTimeoutRef.current) { |
| 56 | clearTimeout(toolbarTimeoutRef.current); |
| 57 | } |
| 58 | return; |
| 59 | } |
| 60 | |
| 61 | const editorBox = editorRef.current?.getBoundingClientRect(); |
| 62 | if (!editorBox) return; |
| 63 | |
| 64 | const { top: editorTop, left: editorLeft } = editorBox; |
| 65 | const start = view.coordsAtPos(from); |
| 66 | const end = view.coordsAtPos(to); |
| 67 | |
| 68 | // Calculate position relative to the editor |
| 69 | const selectionTop = Math.min(start.top, end.top); |
| 70 | const selectionLeft = (start.left + end.left) / 2; |
| 71 | |
| 72 | // Clear any existing timeout |
| 73 | if (toolbarTimeoutRef.current) { |
| 74 | clearTimeout(toolbarTimeoutRef.current); |
| 75 | } |
| 76 | |
| 77 | // Set a new timeout for showing the toolbar |
| 78 | toolbarTimeoutRef.current = setTimeout(() => { |
| 79 | setToolbarState({ |
| 80 | isVisible: true, |
| 81 | top: selectionTop - editorTop, |
| 82 | left: selectionLeft - editorLeft, |
| 83 | }); |
| 84 | }, 150); |
| 85 | }, []); |
| 86 | |
| 87 | useEffect(() => { |
| 88 | if (!editorRef.current) return; |
| 89 | |
| 90 | // Add global styles to remove ProseMirror focus outline |
| 91 | const style = document.createElement("style"); |
| 92 | style.textContent = ` |
| 93 | .ProseMirror { |
| 94 | outline: none !important; |
| 95 | position: relative !important; |
| 96 | } |
| 97 | .ProseMirror-focused { |
| 98 | outline: none !important; |
| 99 | } |
| 100 | `; |
| 101 | document.head.appendChild(style); |
| 102 | |
| 103 | const state = EditorState.create({ |
| 104 | doc: defaultMarkdownParser.parse(content), |
| 105 | schema: mySchema, |
| 106 | plugins: [ |
| 107 | history(), |
| 108 | keymap({ |
| 109 | "Mod-z": undo, |
| 110 | "Mod-y": redo, |
| 111 | "Mod-Shift-z": redo, |
| 112 | "Mod-b": (state, dispatch) => { |
| 113 | const strongMark = state.schema.marks.strong; |
| 114 | if (!strongMark) return false; |
| 115 | return toggleMark(strongMark)(state, dispatch); |
| 116 | }, |
| 117 | "Mod-i": (state, dispatch) => { |
| 118 | const emMark = state.schema.marks.em; |
| 119 | if (!emMark) return false; |
| 120 | return toggleMark(emMark)(state, dispatch); |
| 121 | }, |
| 122 | }), |
| 123 | keymap(baseKeymap), |
| 124 | ], |
| 125 | }); |
| 126 | |
| 127 | const view = new EditorView(editorRef.current, { |
| 128 | state, |
| 129 | editable: () => isEditing, |
| 130 | dispatchTransaction: (transaction) => { |
| 131 | const newState = view.state.apply(transaction); |
| 132 | view.updateState(newState); |
| 133 | |
| 134 | const markdownContent = defaultMarkdownSerializer.serialize( |
| 135 | newState.doc, |
| 136 | ); |
| 137 | onChange(markdownContent); |
| 138 | checkForChanges(markdownContent); |
| 139 | |
| 140 | if (transaction.selectionSet && isEditing) { |
| 141 | updateToolbarPosition(view); |
| 142 | } |
| 143 | }, |
| 144 | handleDOMEvents: { |
| 145 | blur: (_view, event) => { |
| 146 | // Check if the related target (where focus is going) is part of our toolbar |
| 147 | const relatedTarget = event.relatedTarget as HTMLElement; |
| 148 | if ( |
| 149 | relatedTarget?.closest('[role="menu"]') ?? |
| 150 | relatedTarget?.closest(".floating-toolbar") |
| 151 | ) { |
| 152 | // If clicking toolbar or dropdown, don't hide |
| 153 | return false; |
| 154 | } |
| 155 | |
| 156 | if (toolbarTimeoutRef.current) { |
| 157 | clearTimeout(toolbarTimeoutRef.current); |
| 158 | } |
| 159 | setToolbarState((prev) => ({ ...prev, isVisible: false })); |
| 160 | onBlur?.(); |
| 161 | return false; |
| 162 | }, |
| 163 | focus: () => { |
| 164 | const { from, to } = view.state.selection; |
| 165 | if (from !== to) { |
| 166 | updateToolbarPosition(view); |
| 167 | } |
| 168 | return false; |
| 169 | }, |
| 170 | }, |
| 171 | }); |
| 172 | |
| 173 | viewRef.current = view; |
| 174 | originalContentRef.current = content; |
| 175 | onChangeState?.(false); |
| 176 | |
| 177 | return () => { |
| 178 | if (viewRef.current) { |
| 179 | viewRef.current.destroy(); |
| 180 | } |
| 181 | if (toolbarTimeoutRef.current) { |
| 182 | clearTimeout(toolbarTimeoutRef.current); |
| 183 | } |
| 184 | document.head.removeChild(style); |
| 185 | }; |
| 186 | }, [isEditing, updateToolbarPosition]); |
| 187 | |
| 188 | // Update content when it changes externally |
| 189 | useEffect(() => { |
| 190 | if (viewRef.current) { |
| 191 | const currentContent = defaultMarkdownSerializer.serialize( |
| 192 | viewRef.current.state.doc, |
| 193 | ); |
| 194 | if (currentContent !== content) { |
| 195 | const newState = EditorState.create({ |
| 196 | doc: defaultMarkdownParser.parse(content), |
| 197 | schema: mySchema, |
| 198 | plugins: viewRef.current.state.plugins, |
| 199 | }); |
| 200 | viewRef.current.updateState(newState); |
| 201 | originalContentRef.current = content; |
| 202 | onChangeState?.(false); |
| 203 | } |
| 204 | } |
| 205 | }, [content]); |
| 206 | |
| 207 | return ( |
| 208 | <div className="relative"> |
| 209 | <div |
| 210 | ref={editorRef} |
| 211 | className={cn( |
| 212 | "prose max-w-none focus:ring-0 focus:outline-hidden dark:prose-invert", |
| 213 | isEditing ? "cursor-text" : "cursor-default", |
| 214 | className, |
| 215 | )} |
| 216 | /> |
| 217 | {viewRef.current && showFloatingToolbar && ( |
| 218 | <FloatingToolbar |
| 219 | view={viewRef.current} |
| 220 | isVisible={toolbarState.isVisible && isEditing} |
| 221 | top={toolbarState.top} |
| 222 | left={toolbarState.left} |
| 223 | /> |
| 224 | )} |
| 225 | </div> |
| 226 | ); |
| 227 | }; |
| 228 | |
| 229 | export default ProseMirrorEditor; |
| 230 |