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| 1 | +import { useCallback, useRef, useState } from "react"; |
| 2 | +import Header from "../shared/Header"; |
| 3 | +import { useTheme } from "../shared/theme"; |
| 4 | +import { default as Editor } from "./Editor"; |
| 5 | +import initRedKnot, { |
| 6 | + Workspace, |
| 7 | + Settings, |
| 8 | + TargetVersion, |
| 9 | + FileHandle, |
| 10 | +} from "./red_knot_wasm"; |
| 11 | +import { loader } from "@monaco-editor/react"; |
| 12 | +import { setupMonaco } from "../shared/setupMonaco"; |
| 13 | +import { Panel, PanelGroup } from "react-resizable-panels"; |
| 14 | +import { Files } from "./Files"; |
| 15 | + |
| 16 | +type CurrentFile = { |
| 17 | + handle: FileHandle; |
| 18 | + content: string; |
| 19 | +}; |
| 20 | + |
| 21 | +export type FileIndex = { |
| 22 | + [name: string]: FileHandle; |
| 23 | +}; |
| 24 | + |
| 25 | +export default function Chrome() { |
| 26 | + const initPromise = useRef<null | Promise<void>>(null); |
| 27 | + const [workspace, setWorkspace] = useState<null | Workspace>(null); |
| 28 | + |
| 29 | + const [files, setFiles] = useState<FileIndex>({}); |
| 30 | + |
| 31 | + // The revision gets incremented everytime any persisted state changes. |
| 32 | + const [revision, setRevision] = useState(0); |
| 33 | + const [version, setVersion] = useState(""); |
| 34 | + |
| 35 | + const [currentFile, setCurrentFile] = useState<CurrentFile | null>(null); |
| 36 | + |
| 37 | + const [theme, setTheme] = useTheme(); |
| 38 | + |
| 39 | + const handleShare = useCallback(() => { |
| 40 | + alert("TODO"); |
| 41 | + }, []); |
| 42 | + |
| 43 | + if (initPromise.current == null) { |
| 44 | + initPromise.current = startPlayground() |
| 45 | + .then(({ version }) => { |
| 46 | + const settings = new Settings(TargetVersion.Py312); |
| 47 | + const workspace = new Workspace("/", settings); |
| 48 | + setVersion(version); |
| 49 | + setWorkspace(workspace); |
| 50 | + |
| 51 | + const content = "import os"; |
| 52 | + const main = workspace.openFile("main.py", content); |
| 53 | + |
| 54 | + setFiles({ |
| 55 | + "main.py": main, |
| 56 | + }); |
| 57 | + |
| 58 | + setCurrentFile({ |
| 59 | + handle: main, |
| 60 | + content, |
| 61 | + }); |
| 62 | + |
| 63 | + setRevision(1); |
| 64 | + }) |
| 65 | + .catch((error) => { |
| 66 | + console.error("Failed to initialize playground.", error); |
| 67 | + }); |
| 68 | + } |
| 69 | + |
| 70 | + const handleSourceChanged = useCallback( |
| 71 | + (source: string) => { |
| 72 | + if ( |
| 73 | + workspace == null || |
| 74 | + currentFile == null || |
| 75 | + source == currentFile.content |
| 76 | + ) { |
| 77 | + return; |
| 78 | + } |
| 79 | + |
| 80 | + workspace.updateFile(currentFile.handle, source); |
| 81 | + |
| 82 | + setCurrentFile({ |
| 83 | + ...currentFile, |
| 84 | + content: source, |
| 85 | + }); |
| 86 | + setRevision((revision) => revision + 1); |
| 87 | + }, |
| 88 | + [workspace, currentFile], |
| 89 | + ); |
| 90 | + |
| 91 | + const handleFileClicked = useCallback( |
| 92 | + (file: FileHandle) => { |
| 93 | + if (workspace == null) { |
| 94 | + return; |
| 95 | + } |
| 96 | + |
| 97 | + setCurrentFile({ |
| 98 | + handle: file, |
| 99 | + content: workspace.sourceText(file), |
| 100 | + }); |
| 101 | + }, |
| 102 | + [workspace], |
| 103 | + ); |
| 104 | + |
| 105 | + const handleFileAdded = useCallback( |
| 106 | + (name: string) => { |
| 107 | + if (workspace == null) { |
| 108 | + return; |
| 109 | + } |
| 110 | + |
| 111 | + const handle = workspace.openFile(name, ""); |
| 112 | + setCurrentFile({ |
| 113 | + handle, |
| 114 | + content: "", |
| 115 | + }); |
| 116 | + |
| 117 | + setFiles((files) => ({ ...files, [name]: handle })); |
| 118 | + setRevision((revision) => revision + 1); |
| 119 | + }, |
| 120 | + [workspace], |
| 121 | + ); |
| 122 | + |
| 123 | + const handleFileRemoved = useCallback( |
| 124 | + (file: FileHandle) => { |
| 125 | + if (workspace == null) { |
| 126 | + return; |
| 127 | + } |
| 128 | + |
| 129 | + const fileEntries = Object.entries(files); |
| 130 | + const index = fileEntries.findIndex(([, value]) => value === file); |
| 131 | + |
| 132 | + if (index === -1) { |
| 133 | + return; |
| 134 | + } |
| 135 | + |
| 136 | + // Remove the file |
| 137 | + fileEntries.splice(index, 1); |
| 138 | + |
| 139 | + if (currentFile?.handle === file) { |
| 140 | + const newCurrentFile = |
| 141 | + index > 0 ? fileEntries[index - 1] : fileEntries[index]; |
| 142 | + |
| 143 | + if (newCurrentFile == null) { |
| 144 | + setCurrentFile(null); |
| 145 | + } else { |
| 146 | + const handle = newCurrentFile[1]; |
| 147 | + setCurrentFile({ |
| 148 | + handle, |
| 149 | + content: workspace.sourceText(handle), |
| 150 | + }); |
| 151 | + } |
| 152 | + } |
| 153 | + |
| 154 | + workspace.closeFile(file); |
| 155 | + setFiles(Object.fromEntries(fileEntries)); |
| 156 | + setRevision((revision) => revision + 1); |
| 157 | + }, |
| 158 | + [currentFile, workspace, files], |
| 159 | + ); |
| 160 | + |
| 161 | + const handleFileRenamed = useCallback( |
| 162 | + (file: FileHandle, newName: string) => { |
| 163 | + if (workspace == null) { |
| 164 | + return; |
| 165 | + } |
| 166 | + |
| 167 | + const content = workspace.sourceText(file); |
| 168 | + workspace.closeFile(file); |
| 169 | + const newFile = workspace.openFile(newName, content); |
| 170 | + |
| 171 | + if (currentFile?.handle === file) { |
| 172 | + setCurrentFile({ |
| 173 | + content, |
| 174 | + handle: newFile, |
| 175 | + }); |
| 176 | + } |
| 177 | + |
| 178 | + setFiles((files) => { |
| 179 | + const entries = Object.entries(files); |
| 180 | + const index = entries.findIndex(([, value]) => value === file); |
| 181 | + |
| 182 | + entries.splice(index, 1, [newName, newFile]); |
| 183 | + |
| 184 | + return Object.fromEntries(entries); |
| 185 | + }); |
| 186 | + |
| 187 | + setRevision((revision) => (revision += 1)); |
| 188 | + }, |
| 189 | + [workspace, currentFile], |
| 190 | + ); |
| 191 | + |
| 192 | + return ( |
| 193 | + <main className="flex flex-col h-full bg-ayu-background dark:bg-ayu-background-dark"> |
| 194 | + <Header |
| 195 | + edit={revision} |
| 196 | + theme={theme} |
| 197 | + version={version} |
| 198 | + onChangeTheme={setTheme} |
| 199 | + onShare={handleShare} |
| 200 | + /> |
| 201 | + |
| 202 | + <div className="flex grow"> |
| 203 | + <PanelGroup direction="horizontal" autoSaveId="main"> |
| 204 | + {workspace != null && currentFile != null ? ( |
| 205 | + <Panel |
| 206 | + id="main" |
| 207 | + order={0} |
| 208 | + className="flex flex-col gap-2" |
| 209 | + minSize={10} |
| 210 | + > |
| 211 | + <Files |
| 212 | + files={files} |
| 213 | + theme={theme} |
| 214 | + selected={currentFile?.handle ?? null} |
| 215 | + onAdd={handleFileAdded} |
| 216 | + onRename={handleFileRenamed} |
| 217 | + onSelected={handleFileClicked} |
| 218 | + onRemove={handleFileRemoved} |
| 219 | + /> |
| 220 | + |
| 221 | + <div className="flex-grow"> |
| 222 | + <Editor |
| 223 | + theme={theme} |
| 224 | + content={currentFile.content} |
| 225 | + onSourceChanged={handleSourceChanged} |
| 226 | + file={currentFile.handle} |
| 227 | + workspace={workspace} |
| 228 | + /> |
| 229 | + </div> |
| 230 | + </Panel> |
| 231 | + ) : null} |
| 232 | + </PanelGroup> |
| 233 | + </div> |
| 234 | + </main> |
| 235 | + ); |
| 236 | +} |
| 237 | + |
| 238 | +// Run once during startup. Initializes monaco, loads the wasm file, and restores the previous editor state. |
| 239 | +async function startPlayground(): Promise<{ |
| 240 | + version: string; |
| 241 | +}> { |
| 242 | + await initRedKnot(); |
| 243 | + const monaco = await loader.init(); |
| 244 | + |
| 245 | + setupMonaco(monaco); |
| 246 | + |
| 247 | + return { |
| 248 | + version: "0.0.0", |
| 249 | + }; |
| 250 | +} |
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