WIP: Implement support for multiple notes

Refactor Vue <-> Editor <-> CodeMirror code.
Introduce Pinia store to keep global state, in order to get rid of a lot of event juggling between Editor class/child components and the root App component.

electron/main/buffer.js

@@ -16,15 +16,15 @@ const untildify = (pathWithTilde) => {
       : pathWithTilde;
 }
 
-export function constructBufferFilePath(directoryPath) {
-    return join(untildify(directoryPath), isDev ? "buffer-dev.txt" : "buffer.txt")
+export function constructBufferFilePath(directoryPath, path) {
+    return join(untildify(directoryPath), path)
 }
 
-export function getBufferFilePath() {
+export function getFullBufferFilePath(path) {
     let defaultPath = app.getPath("userData")
     let configPath = CONFIG.get("settings.bufferPath")
     let bufferPath = configPath.length ? configPath : defaultPath
-    let bufferFilePath = constructBufferFilePath(bufferPath)
+    let bufferFilePath = constructBufferFilePath(bufferPath, path)
     try {
         // use realpathSync to resolve a potential symlink
         return fs.realpathSync(bufferFilePath)
@@ -103,39 +103,45 @@ export class Buffer {
 
 
 // Buffer
-let buffer
-export function loadBuffer() {
-    if (buffer) {
-        buffer.close()
+let buffers = {}
+export function loadBuffer(path) {
+    if (buffers[path]) {
+        buffers[path].close()
     }
-    buffer = new Buffer({
-        filePath: getBufferFilePath(),
+    buffers[path] = new Buffer({
+        filePath: getFullBufferFilePath(path),
         onChange: (content) => {
-            win?.webContents.send("buffer-content:change", content)
+            console.log("Old buffer.js onChange")
+            win?.webContents.send("buffer-content:change", path, content)
         },
     })
-    return buffer
+    return buffers[path]
 }
 
-ipcMain.handle('buffer-content:load', async () => {
-    if (buffer.exists() && !(eraseInitialContent && isDev)) {
-        return await buffer.load()
+ipcMain.handle('buffer-content:load', async (event, path) => {
+    if (!buffers[path]) {
+        loadBuffer(path)
+    }
+    if (buffers[path].exists() && !(eraseInitialContent && isDev)) {
+        return await buffers[path].load()
     } else {
         return isDev ? initialDevContent : initialContent
     }
 });
 
-async function save(content) {
-    return await buffer.save(content)
+async function save(path, content) {
+    return await buffers[path].save(content)
 }
 
-ipcMain.handle('buffer-content:save', async (event, content) => {
-    return await save(content)
+ipcMain.handle('buffer-content:save', async (event, path, content) => {
+    return await save(path, content)
 });
 
 export let contentSaved = false
-ipcMain.handle('buffer-content:saveAndQuit', async (event, content) => {
-    await save(content)
+ipcMain.handle('buffer-content:saveAndQuit', async (event, contents) => {
+    for (const [path, content] of contents) {
+        await save(path, content)
+    }
     contentSaved = true
     app.quit()
 })

electron/main/file-library.js

@@ -0,0 +1,210 @@
+import fs from "fs"
+import os from "node:os"
+import { join, dirname, basename } from "path"
+
+import * as jetpack from "fs-jetpack";
+import { app, ipcMain, dialog } from "electron"
+
+
+const untildify = (pathWithTilde) => {
+    const homeDir = os.homedir()
+    return homeDir ? pathWithTilde.replace(/^~(?=$|\/|\\)/, homeDir) : pathWithTilde
+}
+
+async function readNoteMetadata(filePath) {
+    const chunks = []
+    for await (let chunk of fs.createReadStream(filePath, { start: 0, end:4000 })) {
+        chunks.push(chunk)
+    }
+    const headContent = Buffer.concat(chunks).toString("utf8")
+    const firstSeparator = headContent.indexOf("\n∞∞∞")
+    if (firstSeparator === -1) {
+        return null
+    }
+    try {
+        const metadata = JSON.parse(headContent.slice(0, firstSeparator).trim())
+        return {"name": metadata.name, "tags": metadata.tags}
+    } catch (e) {
+        return {}
+    }
+}
+
+
+export class FileLibrary {
+    constructor(basePath) {
+        basePath = untildify(basePath)
+        if (jetpack.exists(basePath) !== "dir") {
+            throw new Error(`Path directory does not exist: ${basePath}`)
+        }
+        this.basePath = fs.realpathSync(basePath)
+        this.jetpack = jetpack.cwd(this.basePath)
+        this.files = {};
+        this.watcher = null;
+        this.contentSaved = false
+        this.onChangeCallback = null
+    }
+
+    async exists(path) {
+        return this.jetpack.exists(path) === "file"
+    }
+
+    async load(path) {
+        if (this.files[path]) {
+            return this.files[path].read()
+        }
+        const fullPath = fs.realpathSync(join(this.basePath, path))
+        this.files[path] = new NoteBuffer({fullPath, library:this})
+        return await this.files[path].read()
+    }
+
+    async save(path, content) {
+        if (!this.files[path]) {
+            throw new Error(`File not loaded: ${path}`)
+        }
+        return await this.files[path].save(content)
+    }
+
+    async getList() {
+        console.log("Loading notes")
+        const notes = {}
+        const files = await this.jetpack.findAsync(this.basePath, {
+            matching: "*.txt",
+            recursive: true,
+        })
+        const promises = []
+        for (const file of files) {
+            promises.push(readNoteMetadata(join(this.basePath, file)))
+        }
+        const metadataList = await Promise.all(promises)
+        metadataList.forEach((metadata, i) => {
+            const path = files[i]
+            notes[path] = metadata
+        })
+        return notes
+    }
+
+    setupWatcher(win) {
+        if (!this.watcher) {
+            this.watcher = fs.watch(
+                this.basePath, 
+                {
+                    persistent: true,
+                    recursive: true,
+                    encoding: "utf8",
+                },
+                async (eventType, changedPath) => {
+                    console.log("File changed", eventType, changedPath)
+                    //if (changedPath.toLowerCase().endsWith(".txt")) {
+                    //    console.log("txt", this.notes)
+                    //    if (await this.exists(changedPath)) {
+                    //        console.log("file exists!")
+                    //        const newMetadata = await readNoteMetadata(join(this.basePath, changedPath))
+                    //        if (!(changedPath in this.notes) || newMetadata.name !== this.notes[changedPath].name) {
+                    //            this.notes[changedPath] = newMetadata
+                    //            win.webContents.send("buffer:noteMetadataChanged", changedPath, newMetadata)
+                    //            console.log("metadata changed")
+                    //        } else {
+                    //            console.log("no metadata change")
+                    //        }
+                    //    } else if (changedPath in this.notes) {
+                    //        console.log("note removed", changedPath)
+                    //        delete this.notes[changedPath]
+                    //        win.webContents.send("buffer:noteRemoved", changedPath)
+                    //    }
+                    //}
+                    for (const [path, buffer] of Object.entries(this.files)) {
+                        if (changedPath === basename(path)) {
+                            const content = await buffer.read()
+                            if (buffer._lastSavedContent !== content) {
+                                win.webContents.send("buffer:change", path, content)
+                            }
+                        }
+                    }
+                }
+            )
+        }
+    }
+
+    closeFile(path) {
+        if (this.files[path]) {
+            delete this.files[path]
+        }
+    }
+
+    close() {
+        for (const buffer of Object.values(this.files)) {
+            this.closeFile(buffer.filePath)
+        }
+        this.stopWatcher()
+    }
+
+    stopWatcher() {
+        if (this.watcher) {
+            this.watcher.close()
+            this.watcher = null
+        }
+    }
+}
+
+
+
+export class NoteBuffer {
+    constructor({fullPath, library}) {
+        this.fullPath = fullPath
+        this._lastSavedContent = null
+        this.library = library
+    }
+
+    async read() {
+        return await this.library.jetpack.read(this.fullPath, 'utf8')
+    }
+
+    async save(content) {
+        this._lastSavedContent = content
+        const saveResult = await this.library.jetpack.write(this.fullPath, content, {
+            atomic: true,
+            mode: '600',
+        })
+        return saveResult
+    }
+
+    exists() {
+        return jetpack.exists(this.fullPath) === "file"
+    }
+}
+
+
+export function setupFileLibraryEventHandlers(library, win) {
+    ipcMain.handle('buffer:load', async (event, path) => {
+        console.log("buffer:load", path)
+        return await library.load(path)
+    });
+
+
+    ipcMain.handle('buffer:save', async (event, path, content) => {
+        return await library.save(path, content)
+    });
+
+    ipcMain.handle('buffer:getList', async (event) => {
+        return await library.getList()
+    });
+
+    ipcMain.handle('buffer:exists', async (event, path) => {
+        return await library.exists(path)
+    });
+
+    ipcMain.handle('buffer:close', async (event, path) => {
+        return await library.closeFile(path)
+    });
+
+    ipcMain.handle('buffer:saveAndQuit', async (event, contents) => {
+        library.stopWatcher()
+        for (const [path, content] of contents) {
+            await library.save(path, content)
+        }
+        library.contentSaved = true
+        app.quit()
+    })
+
+    library.setupWatcher(win)
+}

electron/main/index.ts

@@ -10,6 +10,7 @@ import { isDev, isLinux, isMac, isWindows } from '../detect-platform';
 import { initializeAutoUpdate, checkForUpdates } from './auto-update';
 import { fixElectronCors } from './cors';
 import { loadBuffer, contentSaved } from './buffer';
+import { FileLibrary, setupFileLibraryEventHandlers } from './file-library';
 
 
 // The built directory structure
@@ -49,6 +50,7 @@ Menu.setApplicationMenu(menu)
 // process.env['ELECTRON_DISABLE_SECURITY_WARNINGS'] = 'true'
 
 export let win: BrowserWindow | null = null
+let fileLibrary: FileLibrary | null = null
 let tray: Tray | null = null;
 let initErrors: string[] = []
 // Here, you can also use other preload
@@ -139,7 +141,7 @@ async function createWindow() {
         }
         // Prevent the window from closing, and send a message to the renderer which will in turn
         // send a message to the main process to save the current buffer and close the window.
-        if (!contentSaved) {
+        if (!!fileLibrary && !fileLibrary.contentSaved) {
             event.preventDefault()
             win?.webContents.send(WINDOW_CLOSE_EVENT)
         } else {
@@ -308,6 +310,7 @@ function registerAlwaysOnTop() {
 }
 
 app.whenReady().then(createWindow).then(async () => {
+    setupFileLibraryEventHandlers(fileLibrary, win)
     initializeAutoUpdate(win)
     registerGlobalHotkey()
     registerShowInDock()
@@ -349,8 +352,16 @@ ipcMain.handle('dark-mode:set', (event, mode) => {
 
 ipcMain.handle('dark-mode:get', () => nativeTheme.themeSource)
 
-// load buffer on app start
-loadBuffer()
+// Initialize note/file library
+const customLibraryPath = CONFIG.get("settings.bufferPath")
+const libraryPath = customLibraryPath ? customLibraryPath : join(app.getPath("userData"), "notes")
+console.log("libraryPath", libraryPath)
+try {
+    fileLibrary = new FileLibrary(libraryPath)
+} catch (error) {
+    initErrors.push(`Error: ${error.message}`)
+}
+
 ipcMain.handle("getInitErrors", () => {
     return initErrors
 })

electron/preload/index.ts

@@ -1,6 +1,6 @@
 const { contextBridge } = require('electron')
 import themeMode from "./theme-mode"
-import { isMac, isWindows, isLinux } from "../detect-platform"
+import { isMac, isWindows, isLinux, isDev } from "../detect-platform"
 import { ipcRenderer } from "electron"
 import { 
     WINDOW_CLOSE_EVENT, 
@@ -29,9 +29,20 @@ contextBridge.exposeInMainWorld("heynote", {
         isLinux,
         isWebApp: false,
     },
-
+    
+    isDev: isDev,
     themeMode: themeMode,
 
+    init() {
+        ipcRenderer.on("buffer:change", (event, path, content) => {
+            // called on all changes to open buffer files
+            // go through all registered callbacks for this path and call them
+            if (this.buffer._onChangeCallbacks[path]) {
+                this.buffer._onChangeCallbacks[path].forEach(callback => callback(content))
+            }
+        })
+    },
+
     quit() {
         console.log("quitting")
         //ipcRenderer.invoke("app_quit")
@@ -46,25 +57,52 @@ contextBridge.exposeInMainWorld("heynote", {
     },
 
     buffer: {
-        async load() {
-            return await ipcRenderer.invoke("buffer-content:load")
+        async exists(path) {
+            return await ipcRenderer.invoke("buffer:exists", path)
         },
 
-        async save(content) {
-            return await ipcRenderer.invoke("buffer-content:save", content)
+        async getList() {
+            return await ipcRenderer.invoke("buffer:getList")
         },
 
-        async saveAndQuit(content) {
-            return await ipcRenderer.invoke("buffer-content:saveAndQuit", content)
+        async load(path) {
+            return await ipcRenderer.invoke("buffer:load", path)
         },
 
-        onChangeCallback(callback) {
-            ipcRenderer.on("buffer-content:change", callback)
+        async save(path, content) {
+            return await ipcRenderer.invoke("buffer:save", path, content)
+        },
+
+        async saveAndQuit(contents) {
+            return await ipcRenderer.invoke("buffer:saveAndQuit", contents)
+        },
+
+        async close(path) {
+            return await ipcRenderer.invoke("buffer:close", path)
+        },
+
+        _onChangeCallbacks: {},
+        addOnChangeCallback(path, callback) {
+            // register a callback to be called when the buffer content changes for a specific file
+            if (!this._onChangeCallbacks[path]) {
+                this._onChangeCallbacks[path] = []
+            }
+            this._onChangeCallbacks[path].push(callback)
+        },
+        removeOnChangeCallback(path, callback) {
+            if (this._onChangeCallbacks[path]) {
+                this._onChangeCallbacks[path] = this._onChangeCallbacks[path].filter(cb => cb !== callback)
+            }
         },
 
         async selectLocation() {
             return await ipcRenderer.invoke("buffer-content:selectLocation")
-        }
+        },
+
+        callbacks(callbacks) {
+            ipcRenderer.on("buffer:noteMetadataChanged", (event, path, info) => callbacks?.noteMetadataChanged(path, info))
+            ipcRenderer.on("buffer:noteRemoved", (event, path) => callbacks?.noteRemoved(path))
+        },
     },
 
     settings: CONFIG.get("settings"),

public/langdetect-worker.js

@@ -28,6 +28,7 @@ onmessage = (event) => {
                     },
                     content: content,
                     idx: event.data.idx,
+                    path: event.data.path,
                 })
                 return
             }
@@ -53,6 +54,7 @@ onmessage = (event) => {
                     },
                     content: content,
                     idx: event.data.idx,
+                    path: event.data.path,
                 })
                 return
             }
@@ -66,6 +68,7 @@ onmessage = (event) => {
                     },
                     content: content,
                     idx: event.data.idx,
+                    path: event.data.path,
                 })
                 return
             }

src/components/App.vue

@@ -1,8 +1,17 @@
 <script>
+    import { mapState, mapActions } from 'pinia'
+
+    import { mapWritableState } from 'pinia'
+    import { useNotesStore } from "../stores/notes-store"
+    import { useErrorStore } from "../stores/error-store"
+
     import StatusBar from './StatusBar.vue'
     import Editor from './Editor.vue'
     import LanguageSelector from './LanguageSelector.vue'
+    import NoteSelector from './NoteSelector.vue'
     import Settings from './settings/Settings.vue'
+    import ErrorMessages from './ErrorMessages.vue'
+    import NewNote from './NewNote.vue'
 
     export default {
         components: {
@@ -10,20 +19,17 @@
             StatusBar,
             LanguageSelector,
             Settings,
+            NoteSelector,
+            ErrorMessages,
+            NewNote,
         },
 
         data() {
             return {
-                line: 1,
-                column: 1,
-                selectionSize: 0,
-                language: "plaintext",
-                languageAuto: true,
                 theme: window.heynote.themeMode.initial,
                 initialTheme: window.heynote.themeMode.initial,
                 themeSetting: 'system',
                 development: window.location.href.indexOf("dev=1") !== -1,
-                showLanguageSelector: false,
                 showSettings: false,
                 settings: window.heynote.settings,
             }
@@ -56,13 +62,61 @@
             window.heynote.themeMode.removeListener()
         },
 
+        watch: {
+            // when a dialog is closed, we want to focus the editor
+            showLanguageSelector(value) { this.dialogWatcher(value) },
+            showNoteSelector(value) { this.dialogWatcher(value) },
+            showCreateNote(value) { this.dialogWatcher(value) },
+
+            currentNotePath() {
+                this.focusEditor()
+            },
+        },
+
+        computed: {
+            ...mapState(useNotesStore, [
+                "currentNotePath",
+                "showLanguageSelector",
+                "showNoteSelector",
+                "showCreateNote",
+            ]),
+
+            editorInert() {
+                return this.showCreateNote || this.showSettings
+            },
+        },
+
         methods: {
+            ...mapActions(useNotesStore, [
+                "openLanguageSelector",
+                "openNoteSelector",
+                "openCreateNote",
+                "closeDialog",
+                "openNote",
+            ]),
+
+            // Used as a watcher for the booleans that control the visibility of editor dialogs. 
+            // When a dialog is closed, we want to focus the editor
+            dialogWatcher(value) {
+                if (!value) {
+                    this.focusEditor()
+                }
+            },
+
+            focusEditor() {
+                // we need to wait for the next tick for the cases when we set the inert attribute on the editor
+                // in which case issuing a focus() call immediately would not work 
+                this.$nextTick(() => {
+                    this.$refs.editor.focus()
+                })
+            },
+
             openSettings() {
                 this.showSettings = true
             },
             closeSettings() {
                 this.showSettings = false
-                this.$refs.editor.focus()
+                this.focusEditor()
             },
 
             toggleTheme() {
@@ -78,25 +132,8 @@
                 this.$refs.editor.focus()
             },
 
-            onCursorChange(e) {
-                this.line = e.cursorLine.line
-                this.column = e.cursorLine.col
-                this.selectionSize = e.selectionSize
-                this.language = e.language
-                this.languageAuto = e.languageAuto
-            },
-
-            openLanguageSelector() {
-                this.showLanguageSelector = true
-            },
-
-            closeLanguageSelector() {
-                this.showLanguageSelector = false
-                this.$refs.editor.focus()
-            },
-
             onSelectLanguage(language) {
-                this.showLanguageSelector = false
+                this.closeDialog()
                 this.$refs.editor.setLanguage(language)
             },
 
@@ -111,7 +148,6 @@
 <template>
     <div class="container">
         <Editor 
-            @cursorChange="onCursorChange"
             :theme="theme"
             :development="development"
             :debugSyntaxTree="false"
@@ -124,37 +160,44 @@
             :fontSize="settings.fontSize"
             :defaultBlockLanguage="settings.defaultBlockLanguage || 'text'"
             :defaultBlockLanguageAutoDetect="settings.defaultBlockLanguageAutoDetect === undefined ? true : settings.defaultBlockLanguageAutoDetect"
+            :inert="editorInert"
             class="editor"
             ref="editor"
-            @openLanguageSelector="openLanguageSelector"
         />
         <StatusBar 
-            :line="line" 
-            :column="column" 
-            :selectionSize="selectionSize"
-            :language="language" 
-            :languageAuto="languageAuto"
             :theme="theme"
             :themeSetting="themeSetting"
             :autoUpdate="settings.autoUpdate"
             :allowBetaVersions="settings.allowBetaVersions"
             @toggleTheme="toggleTheme"
+            @openNoteSelector="openNoteSelector"
             @openLanguageSelector="openLanguageSelector"
             @formatCurrentBlock="formatCurrentBlock"
             @openSettings="showSettings = true"
+            @click="() => {$refs.editor.focus()}"
             class="status" 
         />
         <div class="overlay">
             <LanguageSelector 
                 v-if="showLanguageSelector" 
                 @selectLanguage="onSelectLanguage"
-                @close="closeLanguageSelector"
+                @close="closeDialog"
+            />
+            <NoteSelector 
+                v-if="showNoteSelector" 
+                @openNote="openNote"
+                @close="closeDialog"
             />
             <Settings 
                 v-if="showSettings"
                 :initialSettings="settings"
                 @closeSettings="closeSettings"
             />
+            <NewNote 
+                v-if="showCreateNote"
+                @close="closeDialog"
+            />
+            <ErrorMessages />
         </div>
     </div>
 </template>

src/components/Editor.vue

@@ -1,6 +1,9 @@
 <script>
-    import { HeynoteEditor, LANGUAGE_SELECTOR_EVENT } from '../editor/editor.js'
+    import { HeynoteEditor } from '../editor/editor.js'
     import { syntaxTree } from "@codemirror/language"
+    import { toRaw } from 'vue';
+    import { mapState } from 'pinia'
+    import { useNotesStore } from "../stores/notes-store"
 
     export default {
         props: {
@@ -38,66 +41,23 @@
         data() {
             return {
                 syntaxTreeDebugContent: null,
+                bufferFilePath: null,
+                editor: null,
             }
         },
 
         mounted() {
-            this.$refs.editor.addEventListener("selectionChange", (e) => {
-                //console.log("selectionChange:", e)
-                this.$emit("cursorChange", {
-                    cursorLine: e.cursorLine,
-                    selectionSize: e.selectionSize,
-                    language: e.language,
-                    languageAuto: e.languageAuto,
-                })
-            })
+            this.loadBuffer(this.currentNotePath)
 
-            this.$refs.editor.addEventListener(LANGUAGE_SELECTOR_EVENT, (e) => {
-                this.$emit("openLanguageSelector")
-            })
-
-            // load buffer content and create editor
-            window.heynote.buffer.load().then((content) => {
-                try {
-                    let diskContent = content
-                    this.editor = new HeynoteEditor({
-                        element: this.$refs.editor,
-                        content: content,
-                        theme: this.theme,
-                        saveFunction: (content) => {
-                            if (content === diskContent) {
-                                return
-                            }
-                            diskContent = content
-                            window.heynote.buffer.save(content)
-                        },
-                        keymap: this.keymap,
-                        emacsMetaKey: this.emacsMetaKey,
-                        showLineNumberGutter: this.showLineNumberGutter,
-                        showFoldGutter: this.showFoldGutter,
-                        bracketClosing: this.bracketClosing,
-                        fontFamily: this.fontFamily,
-                        fontSize: this.fontSize,
-                    })
-                    window._heynote_editor = this.editor
-                    window.document.addEventListener("currenciesLoaded", this.onCurrenciesLoaded)
-                    this.editor.setDefaultBlockLanguage(this.defaultBlockLanguage, this.defaultBlockLanguageAutoDetect)
-
-                    // set up buffer change listener
-                    window.heynote.buffer.onChangeCallback((event, content) => {
-                        diskContent = content
-                        this.editor.setContent(content)
-                    })
-                } catch (e) {
-                    alert("Error! " + e.message)
-                    throw e
-                }
-            })
             // set up window close handler that will save the buffer and quit
             window.heynote.onWindowClose(() => {
-                window.heynote.buffer.saveAndQuit(this.editor.getContent())
+                window.heynote.buffer.saveAndQuit([
+                    [this.editor.path, this.editor.getContent()],
+                ])
             })
 
+            window.document.addEventListener("currenciesLoaded", this.onCurrenciesLoaded)
+
             // if debugSyntaxTree prop is set, display syntax tree for debugging
             if (this.debugSyntaxTree) {
                 setInterval(() => {
@@ -123,65 +83,108 @@
         },
 
         watch: {
+            currentNotePath(path) {
+                //console.log("currentNotePath changed to", path)
+                this.loadBuffer(path)
+            },
+
             theme(newTheme) {
-                this.editor.setTheme(newTheme)
+                toRaw(this.editor).setTheme(newTheme)
             },
 
             keymap() {
-                this.editor.setKeymap(this.keymap, this.emacsMetaKey)
+                toRaw(this.editor).setKeymap(this.keymap, this.emacsMetaKey)
             },
 
             emacsMetaKey() {
-                this.editor.setKeymap(this.keymap, this.emacsMetaKey)
+                toRaw(this.editor).setKeymap(this.keymap, this.emacsMetaKey)
             },
 
             showLineNumberGutter(show) {
-                this.editor.setLineNumberGutter(show)
+                toRaw(this.editor).setLineNumberGutter(show)
             },
 
             showFoldGutter(show) {
-                this.editor.setFoldGutter(show)
+                toRaw(this.editor).setFoldGutter(show)
             },
 
             bracketClosing(value) {
-                this.editor.setBracketClosing(value)
+                toRaw(this.editor).setBracketClosing(value)
             },
 
             fontFamily() {
-                this.editor.setFont(this.fontFamily, this.fontSize)
+                toRaw(this.editor).setFont(this.fontFamily, this.fontSize)
             },
             fontSize() {
-                this.editor.setFont(this.fontFamily, this.fontSize)
+                toRaw(this.editor).setFont(this.fontFamily, this.fontSize)
             },
             defaultBlockLanguage() {
-                this.editor.setDefaultBlockLanguage(this.defaultBlockLanguage, this.defaultBlockLanguageAutoDetect)
+                toRaw(this.editor).setDefaultBlockLanguage(this.defaultBlockLanguage, this.defaultBlockLanguageAutoDetect)
             },
             defaultBlockLanguageAutoDetect() {
-                this.editor.setDefaultBlockLanguage(this.defaultBlockLanguage, this.defaultBlockLanguageAutoDetect)
+                toRaw(this.editor).setDefaultBlockLanguage(this.defaultBlockLanguage, this.defaultBlockLanguageAutoDetect)
             },
         },
 
+        computed: {
+            ...mapState(useNotesStore, [
+                "currentNotePath",
+            ]),
+        },
+
         methods: {
-            setLanguage(language) {
-                if (language === "auto") {
-                    this.editor.setCurrentLanguage(null, true)
-                } else {
-                    this.editor.setCurrentLanguage(language, false)
+            loadBuffer(path) {
+                if (this.editor) {
+                    this.editor.destroy()
                 }
-                this.editor.focus()
+                // load buffer content and create editor
+                this.bufferFilePath = path
+                try {
+                    this.editor = new HeynoteEditor({
+                        element: this.$refs.editor,
+                        path: this.bufferFilePath,
+                        theme: this.theme,
+                        keymap: this.keymap,
+                        emacsMetaKey: this.emacsMetaKey,
+                        showLineNumberGutter: this.showLineNumberGutter,
+                        showFoldGutter: this.showFoldGutter,
+                        bracketClosing: this.bracketClosing,
+                        fontFamily: this.fontFamily,
+                        fontSize: this.fontSize,
+                        defaultBlockToken: this.defaultBlockLanguage,
+                        defaultBlockAutoDetect: this.defaultBlockLanguageAutoDetect,
+                    })
+                    window._heynote_editor = toRaw(this.editor)
+                } catch (e) {
+                    alert("Error! " + e.message)
+                    throw e
+                }
+            },
+
+            setLanguage(language) {
+                const editor = toRaw(this.editor)
+                if (language === "auto") {
+                    editor.setCurrentLanguage(null, true)
+                } else {
+                    editor.setCurrentLanguage(language, false)
+                }
+                editor.focus()
             },
 
             formatCurrentBlock() {
-                this.editor.formatCurrentBlock()
-                this.editor.focus()
+                const editor = toRaw(this.editor)
+                editor.formatCurrentBlock()
+                editor.focus()
             },
 
             onCurrenciesLoaded() {
-                this.editor.currenciesLoaded()
+                if (this.editor) {
+                    toRaw(this.editor).currenciesLoaded()
+                }
             },
 
             focus() {
-                this.editor.focus()
+                toRaw(this.editor).focus()
             },
         },
     }

src/components/NewNote.vue

@@ -0,0 +1,158 @@
+<script>
+    import { mapState, mapActions } from 'pinia'
+    import { useNotesStore } from "../stores/notes-store"
+
+    import FolderSelect from './form/FolderSelect.vue'
+
+    export default {
+        data() {
+            return {
+                name: "",
+                filename: "",
+                tags: [],
+            }
+        },
+        components: {
+            FolderSelect
+        },
+
+        async mounted() {
+            await this.updateNotes()
+            this.$refs.nameInput.focus()
+        },
+
+        computed: {
+            ...mapState(useNotesStore, [
+                "notes",
+            ]),
+        },
+
+        methods: {
+            ...mapActions(useNotesStore, [
+                "updateNotes",
+            ]),
+
+            onKeydown(event) {
+                if (event.key === "Escape") {
+                    this.$emit("close")
+                    event.preventDefault()
+                }
+            },
+
+            onSubmit(event) {
+                event.preventDefault()
+                console.log("Creating note", this.name)
+                this.$emit("close")
+                //this.$emit("create", this.$refs.input.value)
+            },
+        }
+    }
+</script>
+
+<template>
+    <div class="scroller" @keydown="onKeydown" tabindex="-1">
+        <form class="new-note" tabindex="-1" @focusout="onFocusOut" ref="container" @submit="onSubmit">
+            <div class="container">
+                <h1>New Note from Block</h1>
+                <input 
+                    placeholder="Name"
+                    type="text" 
+                    v-model="name"
+                    class="name-input"
+                    ref="nameInput"
+                />
+
+                <label for="folder-select">Create in</label>
+                <FolderSelect id="folder-select" />
+            </div>
+            <div class="bottom-bar">
+                <button type="submit">Create Note</button>
+            </div>
+        </form>
+    </div>
+</template>
+
+<style scoped lang="sass">    
+    .scroller
+        overflow: auto
+        position: fixed
+        top: 0
+        left: 0
+        bottom: 0
+        right: 0
+        background: rgba(0,0,0, 0.2)
+    .new-note
+        font-size: 13px
+        //background: #48b57e
+        background: #efefef
+        position: absolute
+        top: 0
+        left: 50%
+        transform: translateX(-50%)
+        border-radius: 0 0 5px 5px
+        box-shadow: 0 0 10px rgba(0,0,0,0.3)
+        &:focus
+            outline: none
+        +dark-mode
+            background: #333
+            box-shadow: 0 0 10px rgba(0,0,0,0.5)
+            color: rgba(255,255,255, 0.7)
+        +webapp-mobile
+            max-width: calc(100% - 80px)
+        
+        .container
+            padding: 10px
+
+            h1
+                font-weight: bold
+                margin-bottom: 14px
+            
+            label
+                display: block
+                margin-bottom: 6px
+                //padding-left: 2px
+                font-size: 12px
+                font-weight: 600
+
+            
+            .name-input
+                width: 400px
+                background: #fff
+                padding: 4px 5px
+                border: 1px solid #ccc
+                box-sizing: border-box
+                border-radius: 2px
+                margin-bottom: 16px
+                &:focus
+                    outline: none
+                    border: 1px solid #fff
+                    outline: 2px solid #48b57e
+                +dark-mode
+                    background: #3b3b3b
+                    color: rgba(255,255,255, 0.9)
+                    border: 1px solid #5a5a5a
+                    &:focus
+                        border: 1px solid #3b3b3b
+                +webapp-mobile
+                    font-size: 16px
+                    max-width: 100%
+        
+        .bottom-bar
+            border-radius: 0 0 5px 5px
+            background: #e3e3e3
+            padding: 10px
+            display: flex
+            justify-content: flex-end
+            +dark-mode
+                background: #222
+            button
+                font-size: 12px
+                height: 28px
+                border: 1px solid #c5c5c5
+                border-radius: 3px
+                padding-left: 10px
+                padding-right: 10px
+                &:focus
+                    outline-color: #48b57e
+        
+</style>

src/components/NoteSelector.vue

@@ -0,0 +1,186 @@
+<script>
+    import { mapState, mapActions } from 'pinia'
+    import { useNotesStore } from "../stores/notes-store"
+
+    export default {
+        data() {
+            return {
+                selected: 0,
+                filter: "",
+                items: [],
+            }
+        },
+
+        async mounted() {
+            await this.updateNotes()
+            this.$refs.container.focus()
+            this.$refs.input.focus()
+            this.items = Object.entries(this.notes).map(([path, metadata]) => {
+                return {
+                    "path": path,
+                    "name": metadata?.name || path,
+                }
+            })
+        },
+
+        computed: {
+            ...mapState(useNotesStore, [
+                "notes",
+            ]),
+
+            filteredItems() {
+                return this.items.filter((lang) => {
+                    return lang.name.toLowerCase().indexOf(this.filter.toLowerCase()) !== -1
+                })
+            },
+        },
+
+        methods: {
+            ...mapActions(useNotesStore, [
+                "updateNotes",
+            ]),
+
+            onKeydown(event) {
+                if (event.key === "ArrowDown") {
+                    this.selected = Math.min(this.selected + 1, this.filteredItems.length - 1)
+                    event.preventDefault()
+                    if (this.selected === this.filteredItems.length - 1) {
+                        this.$refs.container.scrollIntoView({block: "end"})
+                    } else {
+                        this.$refs.item[this.selected].scrollIntoView({block: "nearest"})
+                    }
+                    
+                } else if (event.key === "ArrowUp") {
+                    this.selected = Math.max(this.selected - 1, 0)
+                    event.preventDefault()
+                    if (this.selected === 0) {
+                        this.$refs.container.scrollIntoView({block: "start"})
+                    } else {
+                        this.$refs.item[this.selected].scrollIntoView({block: "nearest"})
+                    }
+                } else if (event.key === "Enter") {
+                    this.selectItem(this.filteredItems[this.selected].path)
+                    event.preventDefault()
+                } else if (event.key === "Escape") {
+                    this.$emit("close")
+                    event.preventDefault()
+                }
+            },
+
+            selectItem(path) {
+                this.$emit("openNote", path)
+            },
+
+            onInput(event) {
+                // reset selection
+                this.selected = 0
+            },
+
+            onFocusOut(event) {
+                let container = this.$refs.container
+                if (container !== event.relatedTarget && !container.contains(event.relatedTarget)) {
+                    this.$emit("close")
+                }
+            },
+        }
+    }
+</script>
+
+<template>
+    <div class="scroller">
+        <form class="note-selector" tabindex="-1" @focusout="onFocusOut" ref="container">
+            <input 
+                type="text" 
+                ref="input"
+                @keydown="onKeydown"
+                @input="onInput"
+                v-model="filter"
+            />
+            <ul class="items">
+                <li
+                    v-for="item, idx in filteredItems"
+                    :key="item.path"
+                    :class="idx === selected ? 'selected' : ''"
+                    @click="selectItem(item.path)"
+                    ref="item"
+                >
+                    <span class="name">{{ item.name }}</span>
+                    <span class="path">{{ item.path }}</span>
+                </li>
+            </ul>
+        </form>
+    </div>
+</template>
+
+<style scoped lang="sass">    
+    .scroller
+        overflow: auto
+        position: fixed
+        top: 0
+        left: 0
+        bottom: 0
+        right: 0
+    .note-selector
+        font-size: 13px
+        padding: 10px
+        //background: #48b57e
+        background: #efefef
+        position: absolute
+        top: 0
+        left: 50%
+        transform: translateX(-50%)
+        border-radius: 0 0 5px 5px
+        box-shadow: 0 0 10px rgba(0,0,0,0.3)
+        +dark-mode
+            background: #151516
+            box-shadow: 0 0 10px rgba(0,0,0,0.5)
+        +webapp-mobile
+            max-width: calc(100% - 80px)
+
+        input
+            background: #fff
+            padding: 4px 5px
+            border: 1px solid #ccc
+            box-sizing: border-box
+            border-radius: 2px
+            width: 400px
+            margin-bottom: 10px
+            &:focus
+                outline: none
+                border: 1px solid #fff
+                outline: 2px solid #48b57e
+            +dark-mode
+                background: #3b3b3b
+                color: rgba(255,255,255, 0.9)
+                border: 1px solid #5a5a5a
+                &:focus
+                    border: 1px solid #3b3b3b
+            +webapp-mobile
+                font-size: 16px
+                max-width: 100%
+        
+        .items
+            > li
+                border-radius: 3px
+                padding: 5px 12px
+                cursor: pointer
+                display: flex
+                align-items: center
+                &:hover
+                    background: #e2e2e2
+                &.selected
+                    background: #48b57e
+                    color: #fff
+                +dark-mode
+                    color: rgba(255,255,255, 0.53)
+                    &:hover
+                        background: #29292a
+                    &.selected
+                        background: #1b6540
+                        color: rgba(255,255,255, 0.87)
+                .name
+                    margin-right: 12px
+                .path
+                    opacity: 0.6
+                    font-size: 12px
+</style>

src/components/StatusBar.vue

@@ -1,17 +1,14 @@
 <script>
+    import { mapState } from 'pinia'
     import UpdateStatusItem from './UpdateStatusItem.vue'
     import { LANGUAGES } from '../editor/languages.js'
+    import { useNotesStore } from "../stores/notes-store"
     
     const LANGUAGE_MAP = Object.fromEntries(LANGUAGES.map(l => [l.token, l]))
     const LANGUAGE_NAMES = Object.fromEntries(LANGUAGES.map(l => [l.token, l.name]))
 
     export default {
         props: [
-            "line", 
-            "column", 
-            "selectionSize",
-            "language", 
-            "languageAuto",
             "theme",
             "themeSetting",
             "autoUpdate",
@@ -33,8 +30,17 @@
         },
 
         computed: {
+            ...mapState(useNotesStore, [
+                "currentNoteName",
+                "currentCursorLine",
+                "currentLanguage", 
+                "currentSelectionSize", 
+                "currentLanguage",
+                "currentLanguageAuto",
+            ]),
+
             languageName() {
-                return LANGUAGE_NAMES[this.language] || this.language
+                return LANGUAGE_NAMES[this.currentLanguage] || this.currentLanguage
             },
 
             className() {
@@ -42,7 +48,7 @@
             },
 
             supportsFormat() {
-                const lang = LANGUAGE_MAP[this.language]
+                const lang = LANGUAGE_MAP[this.currentLanguage]
                 return !!lang ? lang.supportsFormat : false
             },
 
@@ -54,6 +60,10 @@
                 return `Format Block Content (Alt + Shift + F)`
             },
 
+            changeNoteTitle() {
+                return `Change Note (${this.cmdKey} + P)`
+            },
+
             changeLanguageTitle() {
                 return `Change language for current block (${this.cmdKey} + L)`
             },
@@ -68,24 +78,31 @@
 <template>
     <div :class="className">
         <div class="status-block line-number">
-            Ln <span class="num">{{ line }}</span>
-            Col <span class="num">{{ column }}</span>
-            <template v-if="selectionSize > 0">
-                Sel <span class="num">{{ selectionSize }}</span>
+            Ln <span class="num">{{ currentCursorLine?.line }}</span>
+            Col <span class="num">{{ currentCursorLine?.col }}</span>
+            <template v-if="currentSelectionSize > 0">
+                Sel <span class="num">{{ currentSelectionSize }}</span>
             </template>
         </div>
         <div class="spacer"></div>
         <div 
-            @click="$emit('openLanguageSelector')"
+            @click.stop="$emit('openNoteSelector')"
+            class="status-block note clickable"
+            :title="changeNoteTitle"
+        >
+            {{ currentNoteName }} 
+        </div>
+        <div 
+            @click.stop="$emit('openLanguageSelector')"
             class="status-block lang clickable"
             :title="changeLanguageTitle"
         >
             {{ languageName }} 
-            <span v-if="languageAuto" class="auto">(auto)</span>
+            <span v-if="currentLanguageAuto" class="auto">(auto)</span>
         </div>
         <div 
             v-if="supportsFormat"
-            @click="$emit('formatCurrentBlock')"
+            @click.stop="$emit('formatCurrentBlock')"
             class="status-block format clickable"
             :title="formatBlockTitle"
         >
@@ -100,7 +117,7 @@
             <span :class="'icon ' + themeSetting"></span>
         </div>
         <div 
-            @click="$emit('openSettings')"
+            @click.stop="$emit('openSettings')"
             class="status-block settings clickable"
             title="Settings"
         >

src/components/form/FolderSelect.vue

@@ -0,0 +1,53 @@
+<script>
+    export default {
+        props: {
+            tree: Array,
+        },
+
+        methods: {
+            onKeyDown(event) {
+                console.log("Keydown", event.key)
+                if (event.key === "Enter") {
+                    event.preventDefault()
+                    this.$emit("click")
+                }
+            },
+        }
+    }
+</script>
+
+<template>
+    <button
+        class="folder-select-container"
+        @keydown="onKeyDown"
+        @click.stop.prevent="()=>{}"
+    >
+        <div class="folder root selected">
+            Heynote Root
+        </div>
+        <div class="folder indent">New Folder&hellip;</div>
+    </button>
+</template>
+
+<style lang="sass" scoped>
+    .folder-select-container
+        width: 100%
+        background: #fff
+        border: 1px solid #ccc
+        border-radius: 2px
+        padding: 5px 5px
+        text-align: left
+        &:focus
+            outline: none
+            border: 1px solid #fff
+            outline: 2px solid #48b57e
+
+        .folder
+            padding: 3px 6px
+            font-size: 13px
+            &.selected
+                background: #48b57e
+                color: #fff
+            &.indent
+                padding-left: 16px
+</style>

src/editor/block/block.js

@@ -4,8 +4,8 @@ import { EditorState, RangeSetBuilder, StateField, Facet , StateEffect, RangeSet
 import { syntaxTree, ensureSyntaxTree, syntaxTreeAvailable } from "@codemirror/language"
 import { Note, Document, NoteDelimiter } from "../lang-heynote/parser.terms.js"
 import { IterMode } from "@lezer/common";
+import { useNotesStore } from "../../stores/notes-store.js"
 import { heynoteEvent, LANGUAGE_CHANGE } from "../annotation.js";
-import { SelectionChangeEvent } from "../event.js"
 import { mathBlock } from "./math.js"
 import { emptyBlockSelected } from "./select-all.js";
 
@@ -404,32 +404,33 @@ function getSelectionSize(state, sel) {
     return count
 }
 
-const emitCursorChange = (editor) => ViewPlugin.fromClass(
-    class {
-        update(update) {
-            // if the selection changed or the language changed (can happen without selection change), 
-            // emit a selection change event
-            const langChange = update.transactions.some(tr => tr.annotations.some(a => a.value == LANGUAGE_CHANGE))
-            if (update.selectionSet || langChange) {
-                const cursorLine = getBlockLineFromPos(update.state, update.state.selection.main.head)
+const emitCursorChange = (editor) => {
+    const notesStore = useNotesStore()
+    return ViewPlugin.fromClass(
+        class {
+            update(update) {
+                // if the selection changed or the language changed (can happen without selection change), 
+                // emit a selection change event
+                const langChange = update.transactions.some(tr => tr.annotations.some(a => a.value == LANGUAGE_CHANGE))
+                if (update.selectionSet || langChange) {
+                    const cursorLine = getBlockLineFromPos(update.state, update.state.selection.main.head)
 
-                const selectionSize = update.state.selection.ranges.map(
-                    (sel) => getSelectionSize(update.state, sel)
-                ).reduce((a, b) => a + b, 0)
+                    const selectionSize = update.state.selection.ranges.map(
+                        (sel) => getSelectionSize(update.state, sel)
+                    ).reduce((a, b) => a + b, 0)
 
-                const block = getActiveNoteBlock(update.state)
-                if (block && cursorLine) {
-                    editor.element.dispatchEvent(new SelectionChangeEvent({
-                        cursorLine,
-                        selectionSize,
-                        language: block.language.name,
-                        languageAuto: block.language.auto,
-                    }))
+                    const block = getActiveNoteBlock(update.state)
+                    if (block && cursorLine) {
+                        notesStore.currentCursorLine = cursorLine
+                        notesStore.currentSelectionSize = selectionSize
+                        notesStore.currentLanguage = block.language.name
+                        notesStore.currentLanguageAuto = block.language.auto
+                    }
                 }
             }
         }
-    }
-)
+    )
+}
 
 export const noteBlockExtension = (editor) => {
     return [

src/editor/editor.js

@@ -1,4 +1,4 @@
-import { Annotation, EditorState, Compartment, Facet, EditorSelection } from "@codemirror/state"
+import { Annotation, EditorState, Compartment, Facet, EditorSelection, Transaction } from "@codemirror/state"
 import { EditorView, keymap, drawSelection, ViewPlugin, lineNumbers } from "@codemirror/view"
 import { indentUnit, forceParsing, foldGutter, ensureSyntaxTree } from "@codemirror/language"
 import { markdown } from "@codemirror/lang-markdown"
@@ -22,8 +22,8 @@ import { autoSaveContent } from "./save.js"
 import { todoCheckboxPlugin} from "./todo-checkbox.ts"
 import { links } from "./links.js"
 import { NoteFormat } from "./note-format.js"
+import { useNotesStore } from "../stores/notes-store.js";
 
-export const LANGUAGE_SELECTOR_EVENT = "openLanguageSelector"
 
 function getKeymapExtensions(editor, keymap) {
     if (keymap === "emacs") {
@@ -37,10 +37,10 @@ function getKeymapExtensions(editor, keymap) {
 export class HeynoteEditor {
     constructor({
         element, 
+        path,
         content, 
         focus=true, 
         theme="light", 
-        saveFunction=null, 
         keymap="default", 
         emacsMetaKey,
         showLineNumberGutter=true, 
@@ -48,8 +48,11 @@ export class HeynoteEditor {
         bracketClosing=false,
         fontFamily,
         fontSize,
+        defaultBlockToken,
+        defaultBlockAutoDetect,
     }) {
         this.element = element
+        this.path = path
         this.themeCompartment = new Compartment
         this.keymapCompartment = new Compartment
         this.lineNumberCompartmentPre = new Compartment
@@ -60,9 +63,10 @@ export class HeynoteEditor {
         this.deselectOnCopy = keymap === "emacs"
         this.emacsMetaKey = emacsMetaKey
         this.fontTheme = new Compartment
-        this.defaultBlockToken = "text"
-        this.defaultBlockAutoDetect = true
-        this.saveFunction = saveFunction
+        this.setDefaultBlockLanguage(defaultBlockToken, defaultBlockAutoDetect)
+        this.contentLoaded = false
+        this.notesStore = useNotesStore()
+        
 
         const state = EditorState.create({
             doc: "",
@@ -88,7 +92,7 @@ export class HeynoteEditor {
                 }),
                 heynoteLang(),
                 noteBlockExtension(this),
-                languageDetection(() => this),
+                languageDetection(path, () => this),
                 
                 // set cursor blink rate to 1 second
                 drawSelection({cursorBlinkRate:1000}),
@@ -98,7 +102,7 @@ export class HeynoteEditor {
                     return {class: view.state.facet(EditorView.darkTheme) ? "dark-theme" : "light-theme"}
                 }),
 
-                this.saveFunction ? autoSaveContent(this, 2000) : [],
+                autoSaveContent(this, 2000),
 
                 todoCheckboxPlugin,
                 markdown(),
@@ -107,34 +111,66 @@ export class HeynoteEditor {
         })
 
         // make sure saveFunction is called when page is unloaded
-        if (saveFunction) {
-            window.addEventListener("beforeunload", () => {
-                this.save()
-            })
-        }
+        window.addEventListener("beforeunload", () => {
+            this.save()
+        })
 
         this.view = new EditorView({
             state: state,
             parent: element,
         })
         
-        this.setContent(content)
-        
+        //this.setContent(content)
+        this.setReadOnly(true)
+        this.loadContent().then(() => {
+            this.setReadOnly(false)
+        })
+
         if (focus) {
             this.view.focus()
         }
     }
 
-    save() {
-        this.saveFunction(this.getContent())
+    async save() {
+        if (!this.contentLoaded) {
+            return
+        }
+        const content = this.getContent()
+        if (content === this.diskContent) {
+            return
+        }
+        console.log("saving:", this.path)
+        this.diskContent = content
+        await window.heynote.buffer.save(this.path, content)
     }
 
     getContent() {
         this.note.content = this.view.state.sliceDoc()
         this.note.cursors = this.view.state.selection.toJSON()
+        
+        const ranges = this.note.cursors.ranges
+        if (ranges.length == 1 && ranges[0].anchor == 0 && ranges[0].head == 0) {
+            console.log("DEBUG!! Cursor is at 0,0")
+            console.trace()
+        }
         return this.note.serialize()
     }
 
+    async loadContent() {
+        console.log("loading content", this.path)
+        const content = await window.heynote.buffer.load(this.path)
+        this.diskContent = content
+        this.contentLoaded = true
+        this.setContent(content)
+
+        // set up content change listener
+        this.onChange = (content) => {
+            this.diskContent = content
+            this.setContent(content)
+        }
+        window.heynote.buffer.addOnChangeCallback(this.path, this.onChange)
+    }
+
     setContent(content) {
         try {
             this.note = NoteFormat.load(content)
@@ -143,6 +179,7 @@ export class HeynoteEditor {
             this.setReadOnly(true)
             throw e
         }
+        this.notesStore.currentNoteName = this.note.metadata?.name || this.path
         return new Promise((resolve) => {
             // set buffer content
             this.view.dispatch({
@@ -151,7 +188,7 @@ export class HeynoteEditor {
                     to: this.view.state.doc.length,
                     insert: this.note.content,
                 },
-                annotations: [heynoteEvent.of(SET_CONTENT)],
+                annotations: [heynoteEvent.of(SET_CONTENT), Transaction.addToHistory.of(false)],
             })
 
             // Ensure we have a parsed syntax tree when buffer is loaded. This prevents errors for large buffers
@@ -217,7 +254,15 @@ export class HeynoteEditor {
     }
 
     openLanguageSelector() {
-        this.element.dispatchEvent(new Event(LANGUAGE_SELECTOR_EVENT))
+        this.notesStore.openLanguageSelector()
+    }
+
+    openNoteSelector() {
+        this.notesStore.openNoteSelector()
+    }
+
+    openCreateNote() {
+        this.notesStore.openCreateNote()
     }
 
     setCurrentLanguage(lang, auto=false) {
@@ -257,6 +302,15 @@ export class HeynoteEditor {
     currenciesLoaded() {
         triggerCurrenciesLoaded(this.view.state, this.view.dispatch)
     }
+
+    destroy() {
+        if (this.onChange) {
+            window.heynote.buffer.removeOnChangeCallback(this.path, this.onChange)
+        }
+        this.save()
+        this.view.destroy()
+        window.heynote.buffer.close(this.path)
+    }
 }
 
 

src/editor/event.js

@@ -1,9 +0,0 @@
-export class SelectionChangeEvent extends Event {
-    constructor({cursorLine, language, languageAuto, selectionSize}) {
-        super("selectionChange")
-        this.cursorLine = cursorLine
-        this.selectionSize = selectionSize
-        this.language = language
-        this.languageAuto = languageAuto
-    }
-}

src/editor/keymap.js

@@ -57,6 +57,8 @@ export function heynoteKeymap(editor) {
         ["Alt-ArrowUp", moveLineUp],
         ["Alt-ArrowDown", moveLineDown],
         ["Mod-l", () => editor.openLanguageSelector()],
+        ["Mod-p", () => editor.openNoteSelector()],
+        ["Mod-s", () => editor.openCreateNote()],
         ["Alt-Shift-f", formatBlockContent],
         ["Mod-Alt-ArrowDown", newCursorBelow],
         ["Mod-Alt-ArrowUp", newCursorAbove],

src/editor/language-detection/autodetect.js

@@ -1,5 +1,5 @@
 import { EditorState } from "@codemirror/state";
-import { EditorView } from "@codemirror/view";
+import { EditorView, ViewPlugin } from "@codemirror/view";
 import { redoDepth } from "@codemirror/commands";
 import { getActiveNoteBlock, blockState } from "../block/block";
 import { levenshtein_distance } from "./levenshtein";
@@ -25,95 +25,112 @@ function cancelIdleCallbackCompat(id) {
     }
 }
 
-export function languageDetection(getEditor) {
-    const previousBlockContent = {}
-    let idleCallbackId = null
-
-    const detectionWorker = new Worker('langdetect-worker.js?worker');
-    detectionWorker.onmessage = (event) => {
-        //console.log("event:", event.data)
-        if (!event.data.guesslang.language) {
-            return
-        }
-        const editor = getEditor()
-        const view = editor.view
-        const state = view.state
-        const block = getActiveNoteBlock(state)
-        const newLang = GUESSLANG_TO_TOKEN[event.data.guesslang.language]
-        if (block.language.auto === true && block.language.name !== newLang) {
-            console.log("New auto detected language:", newLang, "Confidence:", event.data.guesslang.confidence)
-            let content = state.doc.sliceString(block.content.from, block.content.to)
-            const threshold = content.length * 0.1
-            if (levenshtein_distance(content, event.data.content) <= threshold) {
-                // the content has not changed significantly so it's safe to change the language
-                if (redoDepth(state) === 0) {
-                    console.log("Changing language to", newLang)
-                    changeLanguageTo(state, view.dispatch, block, newLang, true)
-                } else {
-                    console.log("Not changing language because the user has undo:ed and has redo history")
-                }
+// we'll use a shared global web worker for the language detection, for multiple Editor instances
+const editorInstances = {}
+const detectionWorker = new Worker('langdetect-worker.js?worker');
+detectionWorker.onmessage = (event) => {
+    //console.log("event:", event.data)
+    if (!event.data.guesslang.language) {
+        return
+    }
+    
+    const editor = editorInstances[event.data.path]
+    //const editor = getEditor()
+    const view = editor.view
+    const state = view.state
+    const block = getActiveNoteBlock(state)
+    const newLang = GUESSLANG_TO_TOKEN[event.data.guesslang.language]
+    if (block.language.auto === true && block.language.name !== newLang) {
+        console.log("New auto detected language:", newLang, "Confidence:", event.data.guesslang.confidence)
+        let content = state.doc.sliceString(block.content.from, block.content.to)
+        const threshold = content.length * 0.1
+        if (levenshtein_distance(content, event.data.content) <= threshold) {
+            // the content has not changed significantly so it's safe to change the language
+            if (redoDepth(state) === 0) {
+                console.log("Changing language to", newLang)
+                changeLanguageTo(state, view.dispatch, block, newLang, true)
             } else {
-                console.log("Content has changed significantly, not setting new language")
+                console.log("Not changing language because the user has undo:ed and has redo history")
             }
+        } else {
+            console.log("Content has changed significantly, not setting new language")
         }
     }
+}
 
-    const plugin = EditorView.updateListener.of(update => {
-        if (update.docChanged) {
-            if (idleCallbackId !== null) {
-                cancelIdleCallbackCompat(idleCallbackId)
-                idleCallbackId = null
+export function languageDetection(path, getEditor) {
+    const previousBlockContent = {}
+    let idleCallbackId = null
+    const editor = getEditor()
+    editorInstances[path] = editor
+
+    //const plugin = EditorView.updateListener.of(update => {
+    const plugin = ViewPlugin.fromClass(
+        class {
+            update(update) {
+                if (update.docChanged) {
+                    if (idleCallbackId !== null) {
+                        cancelIdleCallbackCompat(idleCallbackId)
+                        idleCallbackId = null
+                    }
+
+                    idleCallbackId = requestIdleCallbackCompat(() => {
+                        idleCallbackId = null
+                        
+                        const range = update.state.selection.asSingle().ranges[0]
+                        const blocks = update.state.facet(blockState)
+                        let block = null, idx = null;
+                        for (let i=0; i<blocks.length; i++) {
+                            if (blocks[i].content.from <= range.from && blocks[i].content.to >= range.from) {
+                                block = blocks[i]
+                                idx = i
+                                break
+                            }
+                        }
+                        if (block === null) {
+                            return
+                        } else if (block.language.auto === false) {
+                            // if language is not auto, set it's previousBlockContent to null so that we'll trigger a language detection
+                            // immediately if the user changes the language to auto
+                            delete previousBlockContent[idx]
+                            return
+                        }
+
+                        const content = update.state.doc.sliceString(block.content.from, block.content.to)
+                        if (content === "" && redoDepth(update.state) === 0) {
+                            // if content is cleared, set language to default
+                            //const editor = getEditor()
+                            const view = editor.view
+                            const block = getActiveNoteBlock(view.state)
+                            if (block.language.name !== editor.defaultBlockToken) {
+                                changeLanguageTo(view.state, view.dispatch, block, editor.defaultBlockToken, true)
+                            }
+                            delete previousBlockContent[idx]
+                        }
+                        if (content.length <= 8) {
+                            return
+                        }
+                        const threshold = content.length * 0.1
+                        if (!previousBlockContent[idx] || levenshtein_distance(previousBlockContent[idx], content) >= threshold) {
+                            // the content has changed significantly, so schedule a language detection
+                            //console.log("Scheduling language detection for block", idx, "with threshold", threshold)
+                            detectionWorker.postMessage({
+                                content: content,
+                                idx: idx,
+                                path: path,
+                            })
+                            previousBlockContent[idx] = content
+                        }
+                    })
+                }
             }
 
-            idleCallbackId = requestIdleCallbackCompat(() => {
-                idleCallbackId = null
-                
-                const range = update.state.selection.asSingle().ranges[0]
-                const blocks = update.state.facet(blockState)
-                let block = null, idx = null;
-                for (let i=0; i<blocks.length; i++) {
-                    if (blocks[i].content.from <= range.from && blocks[i].content.to >= range.from) {
-                        block = blocks[i]
-                        idx = i
-                        break
-                    }
-                }
-                if (block === null) {
-                    return
-                } else if (block.language.auto === false) {
-                    // if language is not auto, set it's previousBlockContent to null so that we'll trigger a language detection
-                    // immediately if the user changes the language to auto
-                    delete previousBlockContent[idx]
-                    return
-                }
-
-                const content = update.state.doc.sliceString(block.content.from, block.content.to)
-                if (content === "" && redoDepth(update.state) === 0) {
-                    // if content is cleared, set language to default
-                    const editor = getEditor()
-                    const view = editor.view
-                    const block = getActiveNoteBlock(view.state)
-                    if (block.language.name !== editor.defaultBlockToken) {
-                        changeLanguageTo(view.state, view.dispatch, block, editor.defaultBlockToken, true)
-                    }
-                    delete previousBlockContent[idx]
-                }
-                if (content.length <= 8) {
-                    return
-                }
-                const threshold = content.length * 0.1
-                if (!previousBlockContent[idx] || levenshtein_distance(previousBlockContent[idx], content) >= threshold) {
-                    // the content has changed significantly, so schedule a language detection
-                    //console.log("Scheduling language detection for block", idx, "with threshold", threshold)
-                    detectionWorker.postMessage({
-                        content: content,
-                        idx: idx,
-                    })
-                    previousBlockContent[idx] = content
-                }
-            })
+            destroy() {
+                console.log("Removing editorInstance for:", path)
+                delete editorInstances[path]
+            }
         }
-    })
+    )
 
     return plugin
 }

src/editor/save.js

@@ -1,5 +1,6 @@
 import { ViewPlugin } from "@codemirror/view"
 import { debounce } from "debounce"
+import { SET_CONTENT }  from "./annotation"
 
 
 export const autoSaveContent = (editor, interval) => {
@@ -12,9 +13,12 @@ export const autoSaveContent = (editor, interval) => {
         class {
             update(update) {
                 if (update.docChanged) {
-                    save()
+                    const initialSetContent = update.transactions.flatMap(t => t.annotations).some(a => a.value === SET_CONTENT)
+                    if (!initialSetContent) {
+                        save()
+                    }
                 }
             }
         }
     )
-}
+}

src/main.js

@@ -6,6 +6,7 @@ import { createPinia } from 'pinia'
 import App from './components/App.vue'
 import { loadCurrencies } from './currency'
 import { useErrorStore } from './stores/error-store'
+import { useNotesStore, initNotesStore } from './stores/notes-store'
 
 
 const pinia = createPinia()
@@ -18,10 +19,12 @@ app.mount('#app').$nextTick(() => {
 })
 
 const errorStore = useErrorStore()
+//errorStore.addError("test error")
 window.heynote.getInitErrors().then((errors) => {
     errors.forEach((e) => errorStore.addError(e))
 })
 
+initNotesStore()
 
 
 
@@ -29,3 +32,4 @@ window.heynote.getInitErrors().then((errors) => {
 loadCurrencies()
 setInterval(loadCurrencies, 1000 * 3600 * 4)
 
+window.heynote.init()

src/stores/notes-store.js

@@ -0,0 +1,65 @@
+import { defineStore } from "pinia"
+
+export const useNotesStore = defineStore("notes", {
+    state: () => ({
+        notes: {},
+        currentNotePath: window.heynote.isDev ? "buffer-dev.txt" : "buffer.txt",
+        currentNoteName: null,
+        currentLanguage: null,
+        currentLanguageAuto: null,
+        currentCursorLine: null,
+        currentSelectionSize: null,
+
+        showNoteSelector: false,
+        showLanguageSelector: false,
+        showCreateNote: false,
+    }),
+
+    actions: {
+        async updateNotes() {
+            this.setNotes(await window.heynote.buffer.getList())
+        },
+
+        setNotes(notes) {
+            this.notes = notes
+        },
+
+        createNewNote(path, content) {
+            //window.heynote.buffer.save(path, content)
+            this.updateNotes()
+        },
+
+        openNote(path) {
+            this.showNoteSelector = false
+            this.showLanguageSelector = false
+            this.showCreateNote = false
+            this.currentNotePath = path
+        },
+
+        openLanguageSelector() {
+            this.showLanguageSelector = true
+            this.showNoteSelector = false
+            this.showCreateNote = false
+        },
+        openNoteSelector() {
+            this.showNoteSelector = true
+            this.showLanguageSelector = false
+            this.showCreateNote = false
+        },
+        openCreateNote() {
+            this.showCreateNote = true
+            this.showNoteSelector = false
+            this.showLanguageSelector = false
+        },
+        closeDialog() {
+            this.showCreateNote = false
+            this.showNoteSelector = false
+            this.showLanguageSelector = false
+        },
+    },
+})
+
+export async function initNotesStore() {
+    const notesStore = useNotesStore()
+    await notesStore.updateNotes()
+}

webapp/bridge.js

@@ -80,20 +80,38 @@ const Heynote = {
     defaultFontSize: isMobileDevice ? 16 : 12,
 
     buffer: {
-        async load() {
-            const content = localStorage.getItem("buffer")
+        async load(path) {
+            const content = localStorage.getItem(path)
             return content === null ? "\n∞∞∞text-a\n" : content
         },
 
-        async save(content) {
-            localStorage.setItem("buffer", content)
+        async save(path, content) {
+            console.log("saving", path, content)
+            localStorage.setItem(path, content)
         },
 
-        async saveAndQuit(content) {
+        async saveAndQuit(contents) {
             
         },
 
-        onChangeCallback(callback) {
+
+        async exists(path) {
+            return true
+        },
+
+        async getList(path) {
+            return [{"path":"buffer.txt", "metadata":{}}]
+        },
+
+        async close(path) {
+            
+        },
+
+        _onChangeCallbacks: {},
+        addOnChangeCallback(path, callback) {
+            
+        },
+        removeOnChangeCallback(path, callback) {
             
         },
     },