fix: Reset edit mode when navigating to another locked note

Signed-off-by: Felvesthe <23108389+Felvesthe@users.noreply.github.com>

AGENTS.md

@@ -0,0 +1,251 @@
+# Obsidian community plugin
+
+## Project overview
+
+- Target: Obsidian Community Plugin (TypeScript → bundled JavaScript).
+- Entry point: `main.ts` compiled to `main.js` and loaded by Obsidian.
+- Required release artifacts: `main.js`, `manifest.json`, and optional `styles.css`.
+
+## Environment & tooling
+
+- Node.js: use current LTS (Node 18+ recommended).
+- **Package manager: npm** (required for this sample - `package.json` defines npm scripts and dependencies).
+- **Bundler: esbuild** (required for this sample - `esbuild.config.mjs` and build scripts depend on it). Alternative bundlers like Rollup or webpack are acceptable for other projects if they bundle all external dependencies into `main.js`.
+- Types: `obsidian` type definitions.
+
+**Note**: This sample project has specific technical dependencies on npm and esbuild. If you're creating a plugin from scratch, you can choose different tools, but you'll need to replace the build configuration accordingly.
+
+### Install
+
+```bash
+npm install
+```
+
+### Dev (watch)
+
+```bash
+npm run dev
+```
+
+### Production build
+
+```bash
+npm run build
+```
+
+## Linting
+
+- To use eslint install eslint from terminal: `npm install -g eslint`
+- To use eslint to analyze this project use this command: `eslint main.ts`
+- eslint will then create a report with suggestions for code improvement by file and line number.
+- If your source code is in a folder, such as `src`, you can use eslint with this command to analyze all files in that folder: `eslint ./src/`
+
+## File & folder conventions
+
+- **Organize code into multiple files**: Split functionality across separate modules rather than putting everything in `main.ts`.
+- Source lives in `src/`. Keep `main.ts` small and focused on plugin lifecycle (loading, unloading, registering commands).
+- **Example file structure**:
+  ```
+  src/
+    main.ts           # Plugin entry point, lifecycle management
+    settings.ts       # Settings interface and defaults
+    commands/         # Command implementations
+      command1.ts
+      command2.ts
+    ui/              # UI components, modals, views
+      modal.ts
+      view.ts
+    utils/           # Utility functions, helpers
+      helpers.ts
+      constants.ts
+    types.ts         # TypeScript interfaces and types
+  ```
+- **Do not commit build artifacts**: Never commit `node_modules/`, `main.js`, or other generated files to version control.
+- Keep the plugin small. Avoid large dependencies. Prefer browser-compatible packages.
+- Generated output should be placed at the plugin root or `dist/` depending on your build setup. Release artifacts must end up at the top level of the plugin folder in the vault (`main.js`, `manifest.json`, `styles.css`).
+
+## Manifest rules (`manifest.json`)
+
+- Must include (non-exhaustive):  
+  - `id` (plugin ID; for local dev it should match the folder name)  
+  - `name`  
+  - `version` (Semantic Versioning `x.y.z`)  
+  - `minAppVersion`  
+  - `description`  
+  - `isDesktopOnly` (boolean)  
+  - Optional: `author`, `authorUrl`, `fundingUrl` (string or map)
+- Never change `id` after release. Treat it as stable API.
+- Keep `minAppVersion` accurate when using newer APIs.
+- Canonical requirements are coded here: https://github.com/obsidianmd/obsidian-releases/blob/master/.github/workflows/validate-plugin-entry.yml
+
+## Testing
+
+- Manual install for testing: copy `main.js`, `manifest.json`, `styles.css` (if any) to:
+  ```
+  <Vault>/.obsidian/plugins/<plugin-id>/
+  ```
+- Reload Obsidian and enable the plugin in **Settings → Community plugins**.
+
+## Commands & settings
+
+- Any user-facing commands should be added via `this.addCommand(...)`.
+- If the plugin has configuration, provide a settings tab and sensible defaults.
+- Persist settings using `this.loadData()` / `this.saveData()`.
+- Use stable command IDs; avoid renaming once released.
+
+## Versioning & releases
+
+- Bump `version` in `manifest.json` (SemVer) and update `versions.json` to map plugin version → minimum app version.
+- Create a GitHub release whose tag exactly matches `manifest.json`'s `version`. Do not use a leading `v`.
+- Attach `manifest.json`, `main.js`, and `styles.css` (if present) to the release as individual assets.
+- After the initial release, follow the process to add/update your plugin in the community catalog as required.
+
+## Security, privacy, and compliance
+
+Follow Obsidian's **Developer Policies** and **Plugin Guidelines**. In particular:
+
+- Default to local/offline operation. Only make network requests when essential to the feature.
+- No hidden telemetry. If you collect optional analytics or call third-party services, require explicit opt-in and document clearly in `README.md` and in settings.
+- Never execute remote code, fetch and eval scripts, or auto-update plugin code outside of normal releases.
+- Minimize scope: read/write only what's necessary inside the vault. Do not access files outside the vault.
+- Clearly disclose any external services used, data sent, and risks.
+- Respect user privacy. Do not collect vault contents, filenames, or personal information unless absolutely necessary and explicitly consented.
+- Avoid deceptive patterns, ads, or spammy notifications.
+- Register and clean up all DOM, app, and interval listeners using the provided `register*` helpers so the plugin unloads safely.
+
+## UX & copy guidelines (for UI text, commands, settings)
+
+- Prefer sentence case for headings, buttons, and titles.
+- Use clear, action-oriented imperatives in step-by-step copy.
+- Use **bold** to indicate literal UI labels. Prefer "select" for interactions.
+- Use arrow notation for navigation: **Settings → Community plugins**.
+- Keep in-app strings short, consistent, and free of jargon.
+
+## Performance
+
+- Keep startup light. Defer heavy work until needed.
+- Avoid long-running tasks during `onload`; use lazy initialization.
+- Batch disk access and avoid excessive vault scans.
+- Debounce/throttle expensive operations in response to file system events.
+
+## Coding conventions
+
+- TypeScript with `"strict": true` preferred.
+- **Keep `main.ts` minimal**: Focus only on plugin lifecycle (onload, onunload, addCommand calls). Delegate all feature logic to separate modules.
+- **Split large files**: If any file exceeds ~200-300 lines, consider breaking it into smaller, focused modules.
+- **Use clear module boundaries**: Each file should have a single, well-defined responsibility.
+- Bundle everything into `main.js` (no unbundled runtime deps).
+- Avoid Node/Electron APIs if you want mobile compatibility; set `isDesktopOnly` accordingly.
+- Prefer `async/await` over promise chains; handle errors gracefully.
+
+## Mobile
+
+- Where feasible, test on iOS and Android.
+- Don't assume desktop-only behavior unless `isDesktopOnly` is `true`.
+- Avoid large in-memory structures; be mindful of memory and storage constraints.
+
+## Agent do/don't
+
+**Do**
+- Add commands with stable IDs (don't rename once released).
+- Provide defaults and validation in settings.
+- Write idempotent code paths so reload/unload doesn't leak listeners or intervals.
+- Use `this.register*` helpers for everything that needs cleanup.
+
+**Don't**
+- Introduce network calls without an obvious user-facing reason and documentation.
+- Ship features that require cloud services without clear disclosure and explicit opt-in.
+- Store or transmit vault contents unless essential and consented.
+
+## Common tasks
+
+### Organize code across multiple files
+
+**main.ts** (minimal, lifecycle only):
+```ts
+import { Plugin } from "obsidian";
+import { MySettings, DEFAULT_SETTINGS } from "./settings";
+import { registerCommands } from "./commands";
+
+export default class MyPlugin extends Plugin {
+  settings: MySettings;
+
+  async onload() {
+    this.settings = Object.assign({}, DEFAULT_SETTINGS, await this.loadData());
+    registerCommands(this);
+  }
+}
+```
+
+**settings.ts**:
+```ts
+export interface MySettings {
+  enabled: boolean;
+  apiKey: string;
+}
+
+export const DEFAULT_SETTINGS: MySettings = {
+  enabled: true,
+  apiKey: "",
+};
+```
+
+**commands/index.ts**:
+```ts
+import { Plugin } from "obsidian";
+import { doSomething } from "./my-command";
+
+export function registerCommands(plugin: Plugin) {
+  plugin.addCommand({
+    id: "do-something",
+    name: "Do something",
+    callback: () => doSomething(plugin),
+  });
+}
+```
+
+### Add a command
+
+```ts
+this.addCommand({
+  id: "your-command-id",
+  name: "Do the thing",
+  callback: () => this.doTheThing(),
+});
+```
+
+### Persist settings
+
+```ts
+interface MySettings { enabled: boolean }
+const DEFAULT_SETTINGS: MySettings = { enabled: true };
+
+async onload() {
+  this.settings = Object.assign({}, DEFAULT_SETTINGS, await this.loadData());
+  await this.saveData(this.settings);
+}
+```
+
+### Register listeners safely
+
+```ts
+this.registerEvent(this.app.workspace.on("file-open", f => { /* ... */ }));
+this.registerDomEvent(window, "resize", () => { /* ... */ });
+this.registerInterval(window.setInterval(() => { /* ... */ }, 1000));
+```
+
+## Troubleshooting
+
+- Plugin doesn't load after build: ensure `main.js` and `manifest.json` are at the top level of the plugin folder under `<Vault>/.obsidian/plugins/<plugin-id>/`. 
+- Build issues: if `main.js` is missing, run `npm run build` or `npm run dev` to compile your TypeScript source code.
+- Commands not appearing: verify `addCommand` runs after `onload` and IDs are unique.
+- Settings not persisting: ensure `loadData`/`saveData` are awaited and you re-render the UI after changes.
+- Mobile-only issues: confirm you're not using desktop-only APIs; check `isDesktopOnly` and adjust.
+
+## References
+
+- Obsidian sample plugin: https://github.com/obsidianmd/obsidian-sample-plugin
+- API documentation: https://docs.obsidian.md
+- Developer policies: https://docs.obsidian.md/Developer+policies
+- Plugin guidelines: https://docs.obsidian.md/Plugins/Releasing/Plugin+guidelines
+- Style guide: https://help.obsidian.md/style-guide

README.md

@@ -50,4 +50,4 @@ The lock will automatically transfer to the new filename.
 If locks aren't working properly:
 1. Check for conflicts with other plugins
 2. Ensure you're running the latest version of Obsidian
-3. Try reinstalling the plugin
+3. Try reinstalling the plugin

esbuild.config.mjs

@@ -15,7 +15,7 @@ const context = await esbuild.context({
 	banner: {
 		js: banner,
 	},
-	entryPoints: ["main.ts"],
+	entryPoints: ["src/main.ts"],
 	bundle: true,
 	external: [
 		"obsidian",

main.ts

@@ -1,148 +0,0 @@
-import { MarkdownView, Menu, Notice, Platform, Plugin, TFile, WorkspaceLeaf } from "obsidian";
-
-interface NoteLockerSettings {
-	lockedNotes: Set<string>;
-	mobileNotificationMaxLength: number;
-	desktopNotificationMaxLength: number;
-}
-
-const DEFAULT_SETTINGS: NoteLockerSettings = {
-	lockedNotes: new Set(),
-	mobileNotificationMaxLength: 18,
-	desktopNotificationMaxLength: 22
-};
-
-export default class NoteLockerPlugin extends Plugin {
-	settings = DEFAULT_SETTINGS;
-
-	async onload() {
-		await this.loadSettings();
-		this.registerEventHandlers();
-		this.initializeExistingLeaves();
-	}
-
-	private registerEventHandlers() {
-		this.registerEvent(
-			this.app.workspace.on("file-menu", (menu, file) =>
-				this.addLockMenuItem(menu, file.path)
-			)
-		);
-
-		this.registerEvent(
-			this.app.workspace.on("editor-menu",(menu, _, view) =>
-				view.file && this.addLockMenuItem(menu, view.file.path)
-			)
-		);
-
-		this.registerEvent(
-			this.app.workspace.on("active-leaf-change", (leaf) =>
-				this.updateLeafMode(leaf)
-			)
-		);
-
-		this.registerEvent(
-			this.app.vault.on("rename", async (file, oldPath) => {
-				if (this.settings.lockedNotes.delete(oldPath)) {
-					if (!this.settings.lockedNotes.has(file.path)) {
-						this.settings.lockedNotes.add(file.path);
-					} else {
-						new Notice(`⚠️ Lock skipped: "${file.name}" was already locked`);
-					}
-					await this.saveSettings();
-				}
-			})
-		);
-	}
-
-	private initializeExistingLeaves() {
-		this.app.workspace
-			.getLeavesOfType("markdown")
-			.forEach((leaf) => this.updateLeafMode(leaf));
-	}
-
-	private addLockMenuItem(menu: Menu, filePath: string) {
-		const isLocked = this.settings.lockedNotes.has(filePath);
-		menu.addItem((item) =>
-			item
-				.setTitle(isLocked ? "Unlock" : "Lock")
-				.setIcon(isLocked ? "unlock" : "lock")
-				.onClick(() => this.toggleNoteLock(filePath))
-		);
-	}
-
-	private async toggleNoteLock(notePath: string) {
-		const isLocked = this.settings.lockedNotes.has(notePath);
-
-		isLocked
-			? this.settings.lockedNotes.delete(notePath)
-			: this.settings.lockedNotes.add(notePath);
-
-		await this.saveSettings();
-
-		const file = this.app.vault.getAbstractFileByPath(notePath);
-
-		if (!file) {
-			new Notice("Error: Note not found");
-			return;
-		}
-
-		const fileName = file instanceof TFile ? file.basename :
-			notePath.split('/').pop()?.replace(/\..+$/, '') || notePath;
-		const displayName = this.truncateFileName(fileName);
-
-		new Notice(`${isLocked ? '🔓 Unlocked' : '🔒 Locked'}: ${displayName}`);
-
-		this.updateAllNoteInstances(notePath);
-	}
-
-	private truncateFileName(name: string): string {
-		const maxLength = Platform.isMobile
-									? this.settings.mobileNotificationMaxLength
-									: this.settings.desktopNotificationMaxLength;
-		return name.length > maxLength
-			? `${name.slice(0, maxLength)}…`
-			: name;
-	}
-
-	private updateAllNoteInstances(notePath: string) {
-		this.app.workspace
-			.getLeavesOfType("markdown")
-			.filter((leaf) => this.isSameNote(leaf, notePath))
-			.forEach((leaf) => this.updateLeafMode(leaf));
-	}
-
-	private isSameNote(leaf: WorkspaceLeaf, notePath: string): boolean {
-		const view = leaf.view;
-		return view instanceof MarkdownView && view.file?.path === notePath;
-	}
-
-	private updateLeafMode(leaf: WorkspaceLeaf | null) {
-		if (!leaf || !(leaf.view instanceof MarkdownView)) return;
-
-		const { view } = leaf;
-		const targetMode =
-			view.file && this.settings.lockedNotes.has(view.file.path)
-				? "preview"
-				: "source";
-
-		if (leaf.getViewState().state?.mode !== targetMode) {
-			leaf.setViewState({
-				...leaf.getViewState(),
-				state: { ...leaf.getViewState().state, mode: targetMode },
-			});
-		}
-	}
-
-	private async loadSettings() {
-		const loaded = await this.loadData();
-		if (loaded) {
-			this.settings.lockedNotes = new Set(loaded.lockedNotes);
-		}
-	}
-
-	private async saveSettings() {
-		await this.saveData({
-			lockedNotes: Array.from(this.settings.lockedNotes),
-		});
-	}
-}

manifest.json

@@ -1,10 +1,10 @@
 {
 	"id": "note-locker",
 	"name": "Note Locker",
-	"version": "1.0.0",
+	"version": "1.3.1",
 	"minAppVersion": "0.15.0",
-	"description": "Note Locker allows you to \"lock\" a note so that it opens in preview mode by default",
+	"description": "Lock notes to open in preview mode by default.",
 	"author": "Felvesthe",
 	"authorUrl": "https://github.com/Felvesthe",
 	"isDesktopOnly": false
-}
+}

package.json

@@ -1,7 +1,7 @@
 {
 	"name": "note-locker",
-	"version": "1.0.0",
-	"description": "Note Locker allows you to \"lock\" a note so that it opens in preview mode by default",
+	"version": "1.3.0",
+	"description": "Lock notes to open in preview mode by default.",
 	"main": "main.js",
 	"scripts": {
 		"dev": "node esbuild.config.mjs",
@@ -21,4 +21,4 @@
 		"tslib": "2.4.0",
 		"typescript": "4.7.4"
 	}
-}
+}

src/main.ts

@@ -0,0 +1,621 @@
+import {
+	MarkdownView,
+	Menu,
+	Notice,
+	Platform,
+	Plugin,
+	TFile,
+	WorkspaceLeaf,
+	TAbstractFile,
+	TFolder,
+	setIcon,
+} from "obsidian";
+
+import { NoteLockerSettings, DEFAULT_SETTINGS } from "./models/types";
+import { FileExplorerUI } from "./ui/fileExplorer";
+import { StatusBarUI } from "./ui/statusBar";
+import { NoteLockerSettingTab } from "./settings";
+import { StrictUnlockModal } from "./ui/strictUnlockModal";
+
+export default class NoteLockerPlugin extends Plugin {
+	settings: NoteLockerSettings = DEFAULT_SETTINGS;
+	fileExplorerUI: FileExplorerUI;
+	statusBarUI: StatusBarUI;
+
+	async onload() {
+		await this.loadSettings();
+
+		this.fileExplorerUI = new FileExplorerUI(this);
+		this.statusBarUI = new StatusBarUI(this);
+
+		this.registerEventHandlers();
+
+		this.initializeExistingLeaves();
+
+		if (this.settings.showStatusBarButton) {
+			this.statusBarUI.createStatusBarItem();
+		}
+
+		if (this.settings.showFileExplorerIcons) {
+			this.fileExplorerUI.addFileExplorerIconStyling();
+		}
+
+		this.addSettingTab(new NoteLockerSettingTab(this.app, this));
+
+		// hotkey
+		this.addCommand({
+			id: 'toggle-note-lock',
+			name: 'Toggle lock for current note',
+			checkCallback: (checking: boolean) => {
+				const file = this.app.workspace.getActiveFile();
+				if (file && file.extension === 'md') {
+					if (!checking) {
+						if (this.settings.strictLockedNotes.has(file.path)) {
+							new StrictUnlockModal(this.app, () => {
+								this.toggleStrictLock(file.path);
+							}).open();
+						} else {
+							this.toggleNoteLock(file.path);
+						}
+					}
+					return true;
+				}
+				return false;
+			},
+		});
+
+		this.addCommand({
+			id: 'switch-to-edit-mode-intercept',
+			name: 'Switch to edit mode (strict lock check)',
+			hotkeys: [{ modifiers: ["Mod"], key: "e" }],
+			checkCallback: (checking: boolean) => {
+				const file = this.app.workspace.getActiveFile();
+				if (file && file.extension === 'md') {
+					if (this.settings.strictLockedNotes.has(file.path)) {
+						if (!checking) {
+							new StrictUnlockModal(this.app, () => {
+								this.toggleStrictLock(file.path);
+							}).open();
+						}
+						return true;
+					}
+				}
+				return false;
+			},
+		});
+	}
+
+	onunload() {
+		const styleEl = document.getElementById('note-locker-styles');
+		if (styleEl) styleEl.remove();
+
+		this.fileExplorerUI.cleanup();
+		this.statusBarUI.removeStatusBarItem();
+	}
+
+	private registerEventHandlers() {
+		this.registerEvent(
+			this.app.workspace.on("file-menu", (menu, file) =>
+				this.addLockMenuItem(menu, file.path)
+			)
+		);
+
+		this.registerEvent(
+			this.app.workspace.on("files-menu", (menu, files) =>
+				this.addBulkLockMenuItem(menu, files)
+			)
+		);
+
+		this.registerEvent(
+			this.app.workspace.on("editor-menu", (menu, _, view) =>
+				view.file && this.addLockMenuItem(menu, view.file.path)
+			)
+		);
+
+		this.registerEvent(
+			this.app.workspace.on("active-leaf-change", (leaf) => {
+				this.updateLeafMode(leaf, true);
+				this.statusBarUI.updateStatusBarButton();
+			})
+		);
+
+		this.registerEvent(
+			this.app.vault.on("rename", async (file, oldPath) => {
+				let settingsChanged = false;
+
+				if (this.settings.lockedNotes.delete(oldPath)) {
+					if (!this.settings.lockedNotes.has(file.path)) {
+						this.settings.lockedNotes.add(file.path);
+						settingsChanged = true;
+					}
+				}
+
+				if (this.settings.lockedFolders.delete(oldPath)) {
+					if (!this.settings.lockedFolders.has(file.path)) {
+						this.settings.lockedFolders.add(file.path);
+						settingsChanged = true;
+					}
+				}
+
+				if (settingsChanged) {
+					await this.saveSettings();
+					this.fileExplorerUI.updateFileExplorerIcons();
+				}
+			})
+		);
+
+		this.registerEvent(
+			this.app.workspace.on("file-open", () => {
+				this.statusBarUI.updateStatusBarButton();
+				this.fileExplorerUI.updateFileExplorerIcons();
+				this.updateLeafMode(this.app.workspace.getLeaf(false), true);
+			})
+		);
+
+		this.registerEvent(
+			this.app.workspace.on("layout-change", () => {
+				this.fileExplorerUI.updateFileExplorerIcons();
+				this.app.workspace.iterateAllLeaves((leaf) => this.updateLeafMode(leaf));
+			})
+		);
+	}
+
+	private initializeExistingLeaves() {
+		this.app.workspace
+			.getLeavesOfType("markdown")
+			.forEach((leaf) => this.updateLeafMode(leaf, true));
+	}
+
+	private addBulkLockMenuItem(menu: Menu, files: TAbstractFile[]) {
+		const validItems = files.filter(f =>
+			(f instanceof TFile && f.extension === 'md') ||
+			(f instanceof TFolder)
+		);
+
+		if (validItems.length < 2) return;
+
+		let allLocked = true;
+		let allUnlocked = true;
+		let allStrictUnlocked = true;
+
+		for (const item of validItems) {
+			const isLocked = this.isPathLocked(item.path);
+			const isStrictLocked = this.settings.strictLockedNotes.has(item.path);
+
+			if (isLocked) {
+				allUnlocked = false;
+			} else {
+				allLocked = false;
+			}
+
+			if (isStrictLocked) {
+				allStrictUnlocked = false;
+			}
+		}
+
+		if (allLocked) {
+			menu.addItem((item) =>
+				item
+					.setTitle(`Unlock ${validItems.length} items`)
+					.setIcon("unlock")
+					.onClick(() => {
+						if (!allStrictUnlocked) {
+							new StrictUnlockModal(
+								this.app,
+								() => this.toggleBulkLock(validItems, false),
+								"Strictly locked items",
+								"At least one of the selected items is strictly locked."
+							).open();
+						} else {
+							this.toggleBulkLock(validItems, false);
+						}
+					})
+			);
+		} else if (allUnlocked) {
+			menu.addItem((item) =>
+				item
+					.setTitle(`Lock ${validItems.length} items`)
+					.setIcon("lock")
+					.onClick(() => this.toggleBulkLock(validItems, true))
+			);
+		}
+
+		const hasFiles = validItems.some(f => f instanceof TFile);
+		if (allStrictUnlocked && hasFiles) {
+			if (allUnlocked || allLocked) {
+				menu.addItem((item) =>
+					item
+						.setTitle(`Strict lock ${validItems.length} items`)
+						.setIcon("lock")
+						.onClick(() => this.toggleBulkStrictLock(validItems, true))
+				);
+			}
+		}
+	}
+
+	private async toggleBulkLock(files: TAbstractFile[], shouldLock: boolean) {
+		for (const file of files) {
+			if (file instanceof TFile) {
+				if (shouldLock) {
+					this.settings.lockedNotes.add(file.path);
+				} else {
+					this.settings.lockedNotes.delete(file.path);
+					this.settings.strictLockedNotes.delete(file.path);
+				}
+			} else if (file instanceof TFolder) {
+				if (shouldLock) {
+					this.settings.lockedFolders.add(file.path);
+				} else {
+					this.settings.lockedFolders.delete(file.path);
+				}
+			}
+		}
+
+		await this.saveSettings();
+		this.fileExplorerUI.updateFileExplorerIcons();
+
+		this.app.workspace.iterateAllLeaves((leaf) => {
+			if (leaf.view instanceof MarkdownView && leaf.view.file) {
+				const path = leaf.view.file.path;
+				if (files.some(f => f.path === path || (f instanceof TFolder && path.startsWith(f.path + '/')))) {
+					this.updateLeafMode(leaf);
+				}
+			}
+		});
+	}
+
+	private async toggleBulkStrictLock(files: TAbstractFile[], shouldLock: boolean) {
+		for (const file of files) {
+			if (file instanceof TFile) {
+				if (shouldLock) {
+					this.settings.strictLockedNotes.add(file.path);
+				} else {
+					this.settings.strictLockedNotes.delete(file.path);
+				}
+			}
+		}
+
+		await this.saveSettings();
+		this.fileExplorerUI.updateFileExplorerIcons();
+
+		this.app.workspace.iterateAllLeaves((leaf) => {
+			if (leaf.view instanceof MarkdownView && leaf.view.file) {
+				const path = leaf.view.file.path;
+				if (files.some(f => f.path === path)) {
+					this.updateLeafMode(leaf);
+				}
+			}
+		});
+	}
+
+	private addLockMenuItem(menu: Menu, path: string) {
+		if (this.isParentFolderLocked(path)) {
+			return;
+		}
+
+		const file = this.app.vault.getAbstractFileByPath(path);
+
+		if (file instanceof TFile && file.extension === 'md') {
+			const isLocked = this.settings.lockedNotes.has(path);
+			const isStrictLocked = this.settings.strictLockedNotes.has(path);
+
+			if (!isStrictLocked) {
+				menu.addItem((item) =>
+					item
+						.setTitle(isLocked ? "Unlock" : "Lock")
+						.setIcon(isLocked ? "unlock" : "lock")
+						.onClick(() => this.toggleNoteLock(path))
+				);
+			}
+
+			if (!isLocked) {
+				if (!isStrictLocked) {
+					menu.addItem((item) =>
+						item
+							.setTitle("Strict lock")
+							.setIcon("lock")
+							.onClick(() => this.toggleStrictLock(path))
+					);
+				} else {
+					menu.addItem((item) =>
+						item
+							.setTitle("Strict unlock")
+							.setIcon("unlock")
+							.onClick(() => {
+								new StrictUnlockModal(this.app, () => {
+									this.toggleStrictLock(path);
+								}).open();
+							})
+					);
+				}
+			}
+		} else if (file && !(file instanceof TFile)) {
+			const isLocked = this.settings.lockedFolders.has(path);
+			menu.addItem((item) =>
+				item
+					.setTitle(isLocked ? "Unlock all notes in folder" : "Lock all notes in folder")
+					.setIcon(isLocked ? "unlock" : "lock")
+					.onClick(() => this.toggleFolderLock(path))
+			);
+		}
+	}
+
+	private isParentFolderLocked(path: string): boolean {
+		let currentPath = path;
+		while (currentPath.includes("/")) {
+			currentPath = currentPath.substring(0, currentPath.lastIndexOf("/"));
+			if (this.settings.lockedFolders.has(currentPath)) {
+				return true;
+			}
+		}
+		return false;
+	}
+
+	async toggleFolderLock(folderPath: string) {
+		const isLocked = this.settings.lockedFolders.has(folderPath);
+
+		isLocked
+			? this.settings.lockedFolders.delete(folderPath)
+			: this.settings.lockedFolders.add(folderPath);
+
+		await this.saveSettings();
+
+		new Notice(`${isLocked ? '🔓 Unlocked' : '🔒 Locked'} folder: ${folderPath}`);
+
+		this.updateAllNotesInFolder(folderPath);
+		this.statusBarUI.updateStatusBarButton();
+		this.fileExplorerUI.updateFileExplorerIcons();
+	}
+
+	private updateAllNotesInFolder(folderPath: string) {
+		this.app.workspace
+			.getLeavesOfType("markdown")
+			.forEach((leaf) => {
+				if (leaf.view instanceof MarkdownView && leaf.view.file) {
+					if (leaf.view.file.path.startsWith(folderPath + "/")) {
+						this.updateLeafMode(leaf);
+					}
+				}
+			});
+	}
+
+	async toggleNoteLock(notePath: string) {
+		const isLocked = this.settings.lockedNotes.has(notePath);
+
+		isLocked
+			? this.settings.lockedNotes.delete(notePath)
+			: this.settings.lockedNotes.add(notePath);
+
+		await this.saveSettings();
+
+		const file = this.app.vault.getAbstractFileByPath(notePath);
+
+		if (!file) {
+			new Notice("Error: Note not found");
+			return;
+		}
+
+		if (this.settings.showNotifications) {
+			const fileName = file instanceof TFile ? file.basename :
+				notePath.split('/').pop()?.replace(/\..+$/, '') || notePath;
+			const displayName = this.truncateFileName(fileName);
+
+			new Notice(`${isLocked ? '🔓 Unlocked' : '🔒 Locked'}: ${displayName}`);
+		}
+
+		this.updateAllNoteInstances(notePath);
+		this.statusBarUI.updateStatusBarButton();
+		this.fileExplorerUI.updateFileExplorerIcons();
+	}
+
+	async toggleStrictLock(notePath: string) {
+		const isStrictLocked = this.settings.strictLockedNotes.has(notePath);
+
+		isStrictLocked
+			? this.settings.strictLockedNotes.delete(notePath)
+			: this.settings.strictLockedNotes.add(notePath);
+
+		await this.saveSettings();
+
+		const file = this.app.vault.getAbstractFileByPath(notePath);
+
+		if (!file) {
+			new Notice("Error: Note not found");
+			return;
+		}
+
+		if (this.settings.showNotifications) {
+			const fileName = file instanceof TFile ? file.basename :
+				notePath.split('/').pop()?.replace(/\..+$/, '') || notePath;
+			const displayName = this.truncateFileName(fileName);
+
+			new Notice(`${isStrictLocked ? '🔓 Strictly unlocked' : '🔒 Strictly locked'}: ${displayName}`);
+		}
+
+		this.updateAllNoteInstances(notePath);
+		this.statusBarUI.updateStatusBarButton();
+		this.fileExplorerUI.updateFileExplorerIcons();
+	}
+
+	private truncateFileName(name: string): string {
+		const maxLength = Platform.isMobile
+			? this.settings.mobileNotificationMaxLength
+			: this.settings.desktopNotificationMaxLength;
+		return name.length > maxLength
+			? `${name.slice(0, maxLength)}…`
+			: name;
+	}
+
+	private updateAllNoteInstances(notePath: string) {
+		this.app.workspace
+			.getLeavesOfType("markdown")
+			.filter((leaf) => this.isSameNote(leaf, notePath))
+			.forEach((leaf) => this.updateLeafMode(leaf));
+	}
+
+	private isSameNote(leaf: WorkspaceLeaf, notePath: string): boolean {
+		const view = leaf.view;
+		return view instanceof MarkdownView && view.file?.path === notePath;
+	}
+
+	public isPathLocked(path: string): boolean {
+		if (this.settings.strictLockedNotes.has(path)) return true;
+		if (this.settings.lockedNotes.has(path)) return true;
+
+		let currentPath = path;
+		while (currentPath.includes("/")) {
+			currentPath = currentPath.substring(0, currentPath.lastIndexOf("/"));
+			if (this.settings.lockedFolders.has(currentPath)) {
+				return true;
+			}
+		}
+		return false;
+	}
+
+	public updateLeafMode(leaf: WorkspaceLeaf | null, fromNavigation: boolean = false) {
+		if (!leaf || !(leaf.view instanceof MarkdownView)) return;
+
+		const { view } = leaf;
+		const path = view.file?.path;
+		if (!path) return;
+
+		const isStrictLocked = this.settings.strictLockedNotes.has(path);
+		const isLocked = this.isPathLocked(path);
+
+		if (isStrictLocked) {
+			const state = leaf.getViewState();
+			if (state.state?.mode === 'source') {
+				leaf.setViewState({
+					...state,
+					state: { ...state.state, mode: 'preview' },
+				});
+				return;
+			}
+		} else if (isLocked) {
+			const state = leaf.getViewState();
+			if ((fromNavigation || this.settings.preventEditInLockedNotes) && state.state?.mode === 'source') {
+				leaf.setViewState({
+					...state,
+					state: { ...state.state, mode: 'preview' },
+				});
+			}
+		}
+
+		if (isStrictLocked) {
+			this.hideEditButtons(view);
+			this.addStrictLockButton(view, path);
+		} else if (isLocked && this.settings.preventEditInLockedNotes) {
+			this.hideEditButtons(view);
+			this.removeStrictLockButton(view);
+		} else {
+			this.showEditButtons(view);
+			this.removeStrictLockButton(view);
+		}
+	}
+
+	private hideEditButtons(view: MarkdownView) {
+		const container = view.containerEl;
+		const allActions = container.querySelectorAll('.view-action');
+
+		allActions.forEach(btn => {
+			if (btn instanceof HTMLElement) {
+				const ariaLabel = btn.getAttribute('aria-label') || '';
+				const hasPencilIcon = !!btn.querySelector('.lucide-pencil');
+
+				if (hasPencilIcon || ariaLabel.includes('Edit') || ariaLabel.includes('edit') || ariaLabel.includes('Switch to editing')) {
+					btn.style.display = 'none';
+				}
+			}
+		});
+	}
+
+	private showEditButtons(view: MarkdownView) {
+		const container = view.containerEl;
+		const editBtns = container.querySelectorAll('.view-action');
+		editBtns.forEach(btn => {
+			if (btn instanceof HTMLElement) {
+				if (btn.getAttribute('aria-label')?.includes('Edit') ||
+					btn.getAttribute('aria-label')?.includes('edit') ||
+					btn.querySelector('.lucide-pencil')) {
+					btn.style.display = '';
+				}
+			}
+		});
+	}
+
+	private addStrictLockButton(view: MarkdownView, path: string) {
+		const container = view.containerEl;
+		let lockBtn = container.querySelector('.note-locker-strict-btn') as HTMLElement;
+		if (!lockBtn) {
+			lockBtn = document.createElement('div');
+			lockBtn.addClass('view-action', 'clickable-icon', 'note-locker-strict-btn');
+			lockBtn.setAttribute('aria-label', 'Strictly locked');
+			setIcon(lockBtn, 'lock-keyhole');
+
+			lockBtn.addEventListener('click', () => {
+				new StrictUnlockModal(this.app, () => {
+					this.toggleStrictLock(path);
+				}).open();
+			});
+
+			const actionsContainer = container.querySelector('.view-actions');
+			if (actionsContainer) {
+				actionsContainer.prepend(lockBtn);
+			}
+		}
+	}
+
+	private removeStrictLockButton(view: MarkdownView) {
+		const container = view.containerEl;
+		const lockBtn = container.querySelector('.note-locker-strict-btn');
+		if (lockBtn) lockBtn.remove();
+	}
+
+	async loadSettings() {
+		const loaded = await this.loadData();
+		if (loaded) {
+			this.settings = {
+				...DEFAULT_SETTINGS,
+				...loaded,
+				lockedNotes: new Set(loaded.lockedNotes || []),
+				lockedFolders: new Set(loaded.lockedFolders || []),
+				strictLockedNotes: new Set(loaded.strictLockedNotes || [])
+			};
+		}
+	}
+
+	async saveSettings() {
+		await this.saveData({
+			...this.settings,
+			lockedNotes: Array.from(this.settings.lockedNotes),
+			lockedFolders: Array.from(this.settings.lockedFolders),
+			strictLockedNotes: Array.from(this.settings.strictLockedNotes),
+		});
+	}
+
+	async updateFileExplorerIconsVisibility(value: boolean) {
+		this.settings.showFileExplorerIcons = value;
+
+		if (value) {
+			this.fileExplorerUI.addFileExplorerIconStyling();
+		} else {
+			this.fileExplorerUI.removeFileExplorerIcons();
+		}
+
+		await this.saveSettings();
+	}
+
+	async updateStatusBarVisibility(value: boolean) {
+		this.settings.showStatusBarButton = value;
+
+		if (value) {
+			if (!this.statusBarUI.statusBarItemEl) {
+				this.statusBarUI.createStatusBarItem();
+			}
+		} else {
+			this.statusBarUI.removeStatusBarItem();
+		}
+
+		await this.saveSettings();
+	}
+}

src/models/types.ts

@@ -0,0 +1,23 @@
+export interface NoteLockerSettings {
+	lockedNotes: Set<string>;
+	lockedFolders: Set<string>;
+	strictLockedNotes: Set<string>;
+	mobileNotificationMaxLength: number;
+	desktopNotificationMaxLength: number;
+	showFileExplorerIcons: boolean;
+	showStatusBarButton: boolean;
+	showNotifications: boolean;
+	preventEditInLockedNotes: boolean;
+}
+
+export const DEFAULT_SETTINGS: NoteLockerSettings = {
+	lockedNotes: new Set(),
+	lockedFolders: new Set(),
+	strictLockedNotes: new Set(),
+	mobileNotificationMaxLength: 18,
+	desktopNotificationMaxLength: 22,
+	showFileExplorerIcons: true,
+	showStatusBarButton: true,
+	showNotifications: true,
+	preventEditInLockedNotes: false
+};

src/settings.ts

@@ -0,0 +1,118 @@
+import { App, Platform, PluginSettingTab, Setting, MarkdownView } from "obsidian";
+import type NoteLockerPlugin from "./main";
+
+export class NoteLockerSettingTab extends PluginSettingTab {
+	plugin: NoteLockerPlugin;
+
+	constructor(app: App, plugin: NoteLockerPlugin) {
+		super(app, plugin);
+		this.plugin = plugin;
+	}
+
+	display(): void {
+		const { containerEl } = this;
+		containerEl.empty();
+
+		new Setting(containerEl)
+			.setName('Show locked notes in file explorer')
+			.setDesc('Display a lock icon next to locked notes in the file explorer')
+			.addToggle(toggle => toggle
+				.setValue(this.plugin.settings.showFileExplorerIcons)
+				.onChange(async (value) => {
+					await this.plugin.updateFileExplorerIconsVisibility(value);
+				}));
+
+		new Setting(containerEl)
+			.setName('Show status bar button')
+			.setDesc('Display a lock/unlock button in the status bar for the current note')
+			.addToggle(toggle => toggle
+				.setValue(this.plugin.settings.showStatusBarButton)
+				.onChange(async (value) => {
+					await this.plugin.updateStatusBarVisibility(value);
+				}));
+
+		new Setting(containerEl)
+			.setName('Show notifications')
+			.setDesc('Show notifications when locking or unlocking notes')
+			.addToggle(toggle => toggle
+				.setValue(this.plugin.settings.showNotifications)
+				.onChange(async (value) => {
+					this.plugin.settings.showNotifications = value;
+					await this.plugin.saveSettings();
+				}));
+
+		new Setting(containerEl)
+			.setName('Prevent editing in locked notes')
+			.setDesc('If enabled, normally locked notes will be read-only. If disabled, you can switch to edit mode.')
+			.addToggle(toggle => toggle
+				.setValue(this.plugin.settings.preventEditInLockedNotes)
+				.onChange(async (value) => {
+					this.plugin.settings.preventEditInLockedNotes = value;
+					await this.plugin.saveSettings();
+					this.plugin.app.workspace.iterateAllLeaves((leaf) => {
+						if (leaf.view instanceof MarkdownView && leaf.view.file) {
+							this.plugin.updateLeafMode(leaf);
+						}
+					});
+				}));
+
+		const mobileNotificationSetting = new Setting(containerEl)
+			.setName('Mobile notification max length')
+			.setDesc('Maximum length of file names in notifications on mobile devices')
+			.addText(text => text
+				.setPlaceholder('18')
+				.setValue(String(this.plugin.settings.mobileNotificationMaxLength))
+				.onChange(async (value) => {
+					const numValue = parseInt(value);
+					if (!isNaN(numValue) && numValue > 0) {
+						this.plugin.settings.mobileNotificationMaxLength = numValue;
+						await this.plugin.saveSettings();
+					}
+				}));
+
+		const desktopNotificationSetting = new Setting(containerEl)
+			.setName('Desktop notification max length')
+			.setDesc('Maximum length of file names in notifications on desktop')
+			.addText(text => text
+				.setPlaceholder('22')
+				.setValue(String(this.plugin.settings.desktopNotificationMaxLength))
+				.onChange(async (value) => {
+					const numValue = parseInt(value);
+					if (!isNaN(numValue) && numValue > 0) {
+						this.plugin.settings.desktopNotificationMaxLength = numValue;
+						await this.plugin.saveSettings();
+					}
+				}));
+
+		if (Platform.isMobile) {
+			desktopNotificationSetting.settingEl.style.display = 'none';
+		} else {
+			mobileNotificationSetting.settingEl.style.display = 'none';
+		}
+
+		const hotkeyInfo = containerEl.createEl('p', {
+			text: 'You can set a hotkey for locking/unlocking notes in Settings → Hotkeys → Toggle Lock for current note.'
+		});
+		hotkeyInfo.style.fontStyle = 'italic';
+
+		containerEl.createEl('h3', { text: 'Locked notes & folders statistics' });
+		const lockedNotesCount = this.plugin.settings.lockedNotes.size;
+		const lockedFoldersCount = this.plugin.settings.lockedFolders.size;
+		const strictLockedNotesCount = this.plugin.settings.strictLockedNotes.size;
+
+		containerEl.createEl('p', {
+			text: 'You currently have:'
+		});
+		containerEl
+			.createEl('ul')
+			.createEl('li', {
+				text: `Locked notes: ${lockedNotesCount}`
+			})
+			.createEl('li', {
+				text: `Locked folders: ${lockedFoldersCount}`
+			})
+			.createEl('li', {
+				text: `Strictly locked notes: ${strictLockedNotesCount}`
+			});
+	}
+}

src/ui/fileExplorer.ts

@@ -0,0 +1,237 @@
+import { setIcon } from "obsidian";
+import type NoteLockerPlugin from "../main";
+
+export class FileExplorerUI {
+	private plugin: NoteLockerPlugin;
+	private folderObserver: MutationObserver | null = null;
+	private updateDebounceTimeout: number | null = null;
+
+	constructor(plugin: NoteLockerPlugin) {
+		this.plugin = plugin;
+	}
+
+	public addFileExplorerIconStyling(): void {
+		const styleEl = document.createElement('style');
+		styleEl.id = 'note-locker-styles';
+		styleEl.textContent = `
+            .note-locker-icon {
+                display: flex;
+                justify-content: center;
+                align-items: center;
+                margin-left: 6px;
+                width: 14px;
+                height: 14px;
+                color: var(--text-accent);
+                opacity: 0.8;
+            }
+            .nav-file-title, .nav-folder-title {
+                display: flex;
+                align-items: center;
+            }
+            .nav-file-title-content, .nav-folder-title-content {
+                flex: 1;
+                min-width: 0;
+                overflow: hidden;
+                text-overflow: ellipsis;
+            }
+        `;
+		document.head.appendChild(styleEl);
+
+		this.plugin.app.workspace.onLayoutReady(() => {
+			this.updateFileExplorerIcons();
+			this.setupFolderObserver();
+		});
+	}
+
+	private setupFolderObserver(): void {
+		if (this.folderObserver) {
+			this.folderObserver.disconnect();
+			this.folderObserver = null;
+		}
+
+		const fileExplorer = document.querySelector('.workspace-split.mod-left-split .nav-files-container');
+		if (!fileExplorer) return;
+
+		this.folderObserver = new MutationObserver((mutations) => {
+			let shouldUpdate = false;
+
+			for (const mutation of mutations) {
+				if (mutation.target instanceof HTMLElement &&
+					(mutation.target.classList.contains('note-locker-icon') ||
+						mutation.target.closest('.note-locker-icon'))) {
+					continue;
+				}
+
+				if (mutation.type === 'childList') {
+					const target = mutation.target as HTMLElement;
+					const isTitle = target.classList.contains('nav-file-title') || target.classList.contains('nav-folder-title');
+
+					let shouldProcess = false;
+
+					for (let i = 0; i < mutation.addedNodes.length; i++) {
+						const node = mutation.addedNodes[i];
+						if (!(node instanceof HTMLElement && node.classList.contains('note-locker-icon'))) {
+							shouldProcess = true;
+							break;
+						}
+					}
+
+					if (!shouldProcess) {
+						for (let i = 0; i < mutation.removedNodes.length; i++) {
+							shouldProcess = true;
+							break;
+						}
+					}
+
+					if (shouldProcess) {
+						if (isTitle) {
+							const container = target.parentElement;
+							if (container) this.processItem(container);
+						} else {
+							this.handleAddedNodes(mutation.addedNodes);
+						}
+					}
+
+				} else if (mutation.type === 'attributes') {
+					if (mutation.target instanceof HTMLElement) {
+						if (mutation.target.classList.contains('nav-file') || mutation.target.classList.contains('nav-folder')) {
+							this.processItem(mutation.target);
+						}
+					}
+				}
+			}
+		});
+
+		this.folderObserver.observe(fileExplorer, {
+			childList: true,
+			attributes: true,
+			attributeFilter: ['class', 'data-path', 'is-collapsed'],
+			subtree: true
+		});
+	}
+
+	private handleAddedNodes(nodeList: NodeList): void {
+		nodeList.forEach((node) => {
+			if (node instanceof HTMLElement) {
+				if (node.classList.contains('nav-file') || node.classList.contains('nav-folder')) {
+					this.processItem(node);
+				}
+
+				if (node.classList.contains('nav-file-title') || node.classList.contains('nav-folder-title')) {
+					const container = node.parentElement;
+					if (container) this.processItem(container);
+				}
+
+				const items = node.querySelectorAll('.nav-file, .nav-folder');
+				items.forEach(item => this.processItem(item as HTMLElement));
+
+				const titles = node.querySelectorAll('.nav-file-title, .nav-folder-title');
+				titles.forEach(title => {
+					const container = title.parentElement;
+					if (container) this.processItem(container);
+				});
+			}
+		});
+	}
+
+	private processItem(item: HTMLElement): void {
+		const titleEl = item.querySelector('.nav-file-title, .nav-folder-title');
+		if (!titleEl) return;
+
+		const path = titleEl.getAttribute('data-path');
+		if (!path) return;
+
+		let iconName: string | null = null;
+		if (item.classList.contains('nav-file')) {
+			if (this.plugin.settings.strictLockedNotes.has(path)) {
+				iconName = 'lock-keyhole';
+			} else if (this.plugin.settings.lockedNotes.has(path)) {
+				iconName = 'lock';
+			}
+		} else if (item.classList.contains('nav-folder')) {
+			if (this.plugin.settings.lockedFolders.has(path)) {
+				iconName = 'lock';
+			}
+		}
+
+		this.updateIconState(titleEl, iconName);
+	}
+
+	public updateFileExplorerIcons(): void {
+		if (!this.plugin.settings.showFileExplorerIcons) {
+			this.removeFileExplorerIcons();
+			return;
+		}
+
+		// Handle files
+		const fileItems = document.querySelectorAll('.nav-file');
+		fileItems.forEach((fileItem) => {
+			const titleEl = fileItem.querySelector('.nav-file-title');
+			if (!titleEl) return;
+
+			const filePath = titleEl.getAttribute('data-path');
+			if (!filePath) return;
+
+			let iconName: string | null = null;
+			if (this.plugin.settings.strictLockedNotes.has(filePath)) {
+				iconName = 'lock-keyhole';
+			} else if (this.plugin.settings.lockedNotes.has(filePath)) {
+				iconName = 'lock';
+			}
+			this.updateIconState(titleEl, iconName);
+		});
+
+		// Handle folders
+		const folderItems = document.querySelectorAll('.nav-folder');
+		folderItems.forEach((folderItem) => {
+			const titleEl = folderItem.querySelector('.nav-folder-title');
+			if (!titleEl) return;
+
+			const folderPath = titleEl.getAttribute('data-path');
+			if (!folderPath) return;
+
+			let iconName: string | null = null;
+			if (this.plugin.settings.lockedFolders.has(folderPath)) {
+				iconName = 'lock';
+			}
+			this.updateIconState(titleEl, iconName);
+		});
+	}
+
+	private updateIconState(targetEl: Element, iconName: string | null): void {
+		const existingIcon = targetEl.querySelector('.note-locker-icon');
+
+		if (iconName) {
+			if (!existingIcon) {
+				const iconEl = document.createElement('div');
+				iconEl.addClass('note-locker-icon');
+				setIcon(iconEl, iconName);
+				targetEl.appendChild(iconEl);
+			} else {
+				setIcon(existingIcon as HTMLElement, iconName);
+			}
+		} else {
+			if (existingIcon) {
+				existingIcon.remove();
+			}
+		}
+	}
+
+	public removeFileExplorerIcons(): void {
+		document.querySelectorAll('.note-locker-icon').forEach(el => el.remove());
+	}
+
+	public cleanup(): void {
+		if (this.updateDebounceTimeout !== null) {
+			window.clearTimeout(this.updateDebounceTimeout);
+			this.updateDebounceTimeout = null;
+		}
+
+		if (this.folderObserver) {
+			this.folderObserver.disconnect();
+			this.folderObserver = null;
+		}
+
+		this.removeFileExplorerIcons();
+	}
+}

src/ui/statusBar.ts

@@ -0,0 +1,88 @@
+import { setIcon } from "obsidian";
+import type NoteLockerPlugin from "../main";
+import { StrictUnlockModal } from "./strictUnlockModal";
+
+export class StatusBarUI {
+	private plugin: NoteLockerPlugin;
+	public statusBarItemEl: HTMLElement | null = null;
+
+	constructor(plugin: NoteLockerPlugin) {
+		this.plugin = plugin;
+	}
+
+	public createStatusBarItem(): void {
+		if (!this.plugin.settings.showStatusBarButton) return;
+
+		this.statusBarItemEl = this.plugin.addStatusBarItem();
+		if (this.statusBarItemEl) {
+			this.statusBarItemEl.addClass('note-locker-status');
+			this.statusBarItemEl.addEventListener('click', () => {
+				const activeFile = this.plugin.app.workspace.getActiveFile();
+				if (activeFile) {
+					if (this.plugin.settings.strictLockedNotes.has(activeFile.path)) {
+						new StrictUnlockModal(this.plugin.app, () => {
+							this.plugin.toggleStrictLock(activeFile.path);
+						}).open();
+					} else {
+						this.plugin.toggleNoteLock(activeFile.path);
+					}
+				}
+			});
+
+			this.updateStatusBarButton();
+		}
+	}
+
+	public updateStatusBarButton(): void {
+		if (!this.plugin.settings.showStatusBarButton || !this.statusBarItemEl) return;
+
+		const isLocked = this.isCurrentNoteActive();
+		this.statusBarItemEl.empty();
+
+		const style = document.createElement('style');
+		style.textContent = `
+			.note-locker-status .locker-icon {
+				margin-right: 6px;
+			}
+		`;
+		document.head.appendChild(style);
+
+		if (this.plugin.app.workspace.getActiveFile()) {
+			const activeFile = this.plugin.app.workspace.getActiveFile();
+			const path = activeFile ? activeFile.path : '';
+			const isStrictLocked = this.plugin.settings.strictLockedNotes.has(path);
+			const isLocked = this.isCurrentNoteActive();
+
+			const iconSpan = this.statusBarItemEl.createSpan({ cls: 'locker-icon' });
+
+			if (isStrictLocked) {
+				setIcon(iconSpan, 'lock-keyhole');
+				this.statusBarItemEl.createSpan({ text: ' Strictly locked' });
+				this.statusBarItemEl.setAttribute('aria-label', 'Strictly locked. Click to unlock.');
+			} else {
+				setIcon(iconSpan, isLocked ? 'lock' : 'unlock');
+				this.statusBarItemEl.createSpan({
+					text: isLocked ? ' Locked' : ' Unlocked'
+				});
+				this.statusBarItemEl.setAttribute('aria-label',
+					isLocked ? 'Click to unlock this note' : 'Click to lock this note');
+			}
+
+			this.statusBarItemEl.style.cursor = 'pointer';
+		} else {
+			this.statusBarItemEl.style.cursor = 'default';
+		}
+	}
+
+	private isCurrentNoteActive(): boolean {
+		const activeFile = this.plugin.app.workspace.getActiveFile();
+		return activeFile ? this.plugin.settings.lockedNotes.has(activeFile.path) : false;
+	}
+
+	public removeStatusBarItem(): void {
+		if (this.statusBarItemEl) {
+			this.statusBarItemEl.detach();
+			this.statusBarItemEl = null;
+		}
+	}
+}

src/ui/strictUnlockModal.ts

@@ -0,0 +1,50 @@
+import { Modal, App, Setting } from "obsidian";
+
+export class StrictUnlockModal extends Modal {
+    private onUnlock: () => void;
+    private title: string;
+    private message: string;
+
+    constructor(
+        app: App,
+        onUnlock: () => void,
+        title: string = "Strictly locked note",
+        message: string = "This note is strictly locked to prevent accidental editing.") {
+        super(app);
+        this.onUnlock = onUnlock;
+        this.title = title;
+        this.message = message;
+    }
+
+    onOpen() {
+        const { contentEl } = this;
+        contentEl.empty();
+
+        contentEl.createEl("h2", { text: this.title });
+        contentEl.createEl("p", { text: this.message });
+        contentEl.createEl("p", { text: "Are you sure you want to unlock?" });
+
+        new Setting(contentEl)
+            .addButton((btn) =>
+                btn
+                    .setButtonText("Unlock")
+                    .setCta()
+                    .onClick(() => {
+                        this.onUnlock();
+                        this.close();
+                    })
+            )
+            .addButton((btn) =>
+                btn
+                    .setButtonText("Cancel")
+                    .onClick(() => {
+                        this.close();
+                    })
+            );
+    }
+
+    onClose() {
+        const { contentEl } = this;
+        contentEl.empty();
+    }
+}

tsconfig.json

@@ -19,6 +19,6 @@
     ]
   },
   "include": [
-    "**/*.ts"
+    "src/**/*.ts"
   ]
 }

version-bump.mjs

@@ -3,12 +3,15 @@ import { readFileSync, writeFileSync } from "fs";
 const targetVersion = process.env.npm_package_version;
 
 // read minAppVersion from manifest.json and bump version to target version
-let manifest = JSON.parse(readFileSync("manifest.json", "utf8"));
+const manifest = JSON.parse(readFileSync("manifest.json", "utf8"));
 const { minAppVersion } = manifest;
 manifest.version = targetVersion;
 writeFileSync("manifest.json", JSON.stringify(manifest, null, "\t"));
 
 // update versions.json with target version and minAppVersion from manifest.json
-let versions = JSON.parse(readFileSync("versions.json", "utf8"));
-versions[targetVersion] = minAppVersion;
-writeFileSync("versions.json", JSON.stringify(versions, null, "\t"));
+// but only if the target version is not already in versions.json
+const versions = JSON.parse(readFileSync('versions.json', 'utf8'));
+if (!Object.values(versions).includes(minAppVersion)) {
+    versions[targetVersion] = minAppVersion;
+    writeFileSync('versions.json', JSON.stringify(versions, null, '\t'));
+}