Add new file UI (#14773)

Adds a notebook or markdown file to a book's top level or a section by right click on Book Tree View
2026-02-16 10:58:30 -05:00 · 2021-03-30 18:44:52 -07:00
parent b774f09b6c
commit 8aa222d1c8
13 changed files with 428 additions and 247 deletions
--- a/extensions/notebook/package.json
+++ b/extensions/notebook/package.json
@@ -235,13 +235,21 @@
        "command": "notebook.command.closeBook",
        "title": "%title.closeJupyterBook%"
      },
+      {
+        "command": "notebook.command.addNotebook",
+        "title": "%title.addNotebook%"
+      },
+      {
+        "command": "notebook.command.addMarkdown",
+        "title": "%title.addMarkdown%"
+      },
      {
        "command": "notebook.command.closeNotebook",
-        "title": "%title.closeJupyterNotebook%"
+        "title": "%title.closeNotebook%"
      },
      {
        "command": "notebook.command.removeNotebook",
-        "title": "%title.removeJupyterNotebook%"
+        "title": "%title.removeNotebook%"
      },
      {
        "command": "notebook.command.moveTo",
@@ -389,6 +397,14 @@
          "command": "notebook.command.closeBook",
          "when": "false"
        },
+        {
+          "command": "notebook.command.addNotebook",
+          "when": "false"
+        },
+        {
+          "command": "notebook.command.addMarkdown",
+          "when": "false"
+        },
        {
          "command": "notebook.command.closeNotebook",
          "when": "false"
@@ -477,13 +493,23 @@
          "command": "notebook.command.removeNotebook",
          "when": "view == bookTreeView && viewItem == savedBookNotebook"
        },
+        {
+          "command": "notebook.command.addNotebook",
+          "when": "view == bookTreeView && viewItem == section || view == bookTreeView && viewItem == savedBook",
+          "group": "newFile@1"
+        },
+        {
+          "command": "notebook.command.addMarkdown",
+          "when": "view == bookTreeView && viewItem == section || view == bookTreeView && viewItem == savedBook",
+          "group": "newFile@1"
+        },
        {
          "command": "notebook.command.moveTo",
-          "when": "view == bookTreeView && viewItem == savedNotebook || view == bookTreeView && viewItem == savedBookNotebook || view == bookTreeView && viewItem == section"
+          "when": "view == bookTreeView && viewItem == savedNotebook || view == bookTreeView && viewItem == savedBookNotebook || view == bookTreeView && viewItem == section || view == bookTreeView && viewItem == Markdown"
        },
        {
          "command": "notebook.command.pinNotebook",
-          "when": "view == bookTreeView && viewItem  == savedNotebook || view == bookTreeView && viewItem == savedBookNotebook",
+          "when": "view == bookTreeView && viewItem  == savedNotebook || view == bookTreeView && viewItem == savedBookNotebook || view == bookTreeView && viewItem == Markdown",
          "group": "inline"
        },
        {
--- a/extensions/notebook/package.nls.json
+++ b/extensions/notebook/package.nls.json
@@ -42,8 +42,10 @@
 	"title.PreviewLocalizedBook": "Get localized SQL Server 2019 guide",
 	"title.openJupyterBook": "Open Book",
 	"title.closeJupyterBook": "Close Book",
-	"title.closeJupyterNotebook": "Close Notebook",
-	"title.removeJupyterNotebook": "Remove Notebook",
+	"title.closeNotebook": "Close Notebook",
+	"title.removeNotebook": "Remove Notebook",
+	"title.addNotebook": "Add Notebook",
+	"title.addMarkdown": "Add Markdown File",
 	"title.revealInBooksViewlet": "Reveal in Books",
 	"title.createJupyterBook": "Create Book (Preview)",
 	"title.openNotebookFolder": "Open Notebooks in Folder",
--- a/extensions/notebook/src/book/bookModel.ts
+++ b/extensions/notebook/src/book/bookModel.ts
@@ -25,7 +25,6 @@ export class BookModel {
 	private _contentFolderPath: string;
 	private _configPath: string;
 	private _bookVersion: BookVersion;
-	private _rootPath: string;
 	private _errorMessage: string;
 	private _activePromise: Deferred<void> | undefined = undefined;
 	private _queuedPromises: Deferred<void>[] = [];
@@ -104,11 +103,9 @@ export class BookModel {
 			}
 			this._bookVersion = BookVersion.v1;
 			this._contentFolderPath = path.posix.join(this.bookPath, content, '');
-			this._rootPath = path.dirname(path.dirname(this._tableOfContentsPath));
 		} else {
 			this._contentFolderPath = this.bookPath;
 			this._tableOfContentsPath = path.posix.join(this.bookPath, '_toc.yml');
-			this._rootPath = path.dirname(this._tableOfContentsPath);
 			this._bookVersion = BookVersion.v2;
 		}
 	}
@@ -190,7 +187,7 @@ export class BookModel {
 					version: this._bookVersion,
 					title: config.title,
 					contentPath: this._tableOfContentsPath,
-					root: this._rootPath,
+					root: this.bookPath,
 					tableOfContents: { sections: this.parseJupyterSections(this._bookVersion, tableOfContents) },
 					page: tableOfContents,
 					type: BookTreeItemType.Book,
@@ -334,7 +331,7 @@ export class BookModel {
 		return this._errorMessage;
 	}

-	public get version(): string {
+	public get version(): BookVersion {
 		return this._bookVersion;
 	}
 }
--- a/extensions/notebook/src/book/bookTocManager.ts
+++ b/extensions/notebook/src/book/bookTocManager.ts
@@ -11,12 +11,15 @@ import { BookVersion, convertTo } from './bookVersionHandler';
 import * as vscode from 'vscode';
 import * as loc from '../common/localizedConstants';
 import { BookModel } from './bookModel';
+import { TocEntryPathHandler } from './tocEntryPathHandler';
+import { FileExtension } from '../common/utils';

 export interface IBookTocManager {
 	updateBook(element: BookTreeItem, book: BookTreeItem, targetSection?: JupyterBookSection): Promise<void>;
 	removeNotebook(element: BookTreeItem): Promise<void>;
 	createBook(bookContentPath: string, contentFolder: string): Promise<void>;
-	recovery(): Promise<void>
+	addNewFile(pathDetails: TocEntryPathHandler, bookItem: BookTreeItem): Promise<void>;
+	recovery(): Promise<void>;
 }

 export interface quickPickResults {
@@ -24,7 +27,7 @@ export interface quickPickResults {
 	book?: BookTreeItem
 }

-const allowedFileExtensions: string[] = ['.md', '.ipynb'];
+const allowedFileExtensions: string[] = [FileExtension.Markdown, FileExtension.Notebook];

 export function hasSections(node: JupyterBookSection): boolean {
 	return node.sections !== undefined && node.sections.length > 0;
@@ -38,12 +41,12 @@ export class BookTocManager implements IBookTocManager {
 	public tocFiles: Map<string, string> = new Map<string, string>();
 	private sourceBookContentPath: string;
 	private targetBookContentPath: string;
-	private _sourceBook: BookModel;

-	constructor(targetBook?: BookModel, sourceBook?: BookModel) {
-		this._sourceBook = sourceBook;
-		this.sourceBookContentPath = sourceBook?.bookItems[0].rootContentPath;
-		this.targetBookContentPath = targetBook?.bookItems[0].rootContentPath;
+	constructor(private _sourceBook?: BookModel, private _targetBook?: BookModel) {
+		this._targetBook?.unwatchTOC();
+		this._sourceBook?.unwatchTOC();
+		this.sourceBookContentPath = this._sourceBook?.bookItems[0].rootContentPath;
+		this.targetBookContentPath = this._targetBook?.bookItems[0].rootContentPath;
 	}

 	/**
@@ -180,19 +183,25 @@ export class BookTocManager implements IBookTocManager {
 	}

 	/**
-	 * Reads and modifies the table of contents file of the target book.
-	 * @param version the version of the target book
+	 * Reads and modifies the table of contents file of book.
+	 * @param version the version of book.
 	 * @param tocPath Path to the table of contents
-	 * @param findSection The section that will be modified.
+	 * @param findSection The section that will be modified. If findSection is undefined then the added section is added at the end of the toc file.
 	 * @param addSection The section that'll be added to the target section. If it's undefined then the target section (findSection) is removed from the table of contents.
 	*/
-	async updateTOC(version: BookVersion, tocPath: string, findSection: JupyterBookSection, addSection?: JupyterBookSection): Promise<void> {
+	async updateTOC(version: BookVersion, tocPath: string, findSection?: JupyterBookSection, addSection?: JupyterBookSection): Promise<void> {
 		const tocFile = await fs.readFile(tocPath, 'utf8');
 		this.tableofContents = yaml.safeLoad(tocFile);
 		if (!this.tocFiles.has(tocPath)) {
 			this.tocFiles.set(tocPath, tocFile);
 		}
-		const isModified = this.modifyToc(version, this.tableofContents, findSection, addSection);
+		let isModified = false;
+		if (findSection) {
+			isModified = this.modifyToc(version, this.tableofContents, findSection, addSection);
+		} else if (addSection) {
+			this.tableofContents.push(addSection);
+			isModified = true;
+		}
 		if (isModified) {
 			await fs.writeFile(tocPath, yaml.safeDump(this.tableofContents, { lineWidth: Infinity, noRefs: true, skipInvalid: true }));
 		} else {
@@ -307,7 +316,7 @@ export class BookTocManager implements IBookTocManager {
 	 * @param section The section that's been moved.
 	 * @param book The target book.
 	*/
-	async addSection(section: BookTreeItem, book: BookTreeItem): Promise<void> {
+	async moveSectionFiles(section: BookTreeItem, book: BookTreeItem): Promise<void> {
 		const uri = path.posix.join(path.posix.sep, path.relative(section.rootContentPath, section.book.contentPath));
 		let moveFile = path.join(path.parse(uri).dir, path.parse(uri).name);
 		let fileName = undefined;
@@ -347,20 +356,20 @@ export class BookTocManager implements IBookTocManager {
 	}

 	/**
-	 * Moves a notebook to a book top level or a book's section. If there's a target section we add the the targetSection directory if it has one and append it to the
-	 * notebook's path. The overwrite option is set to false to prevent any issues with duplicated file names.
-	 * @param element Notebook, Markdown File, or section that will be added to the book.
+	 * Moves a file to a book top level or a book's section. If there's a target section we add the the targetSection directory if it has one and append it to the
+	 * files's path. The overwrite option is set to false to prevent any issues with duplicated file names.
+	 * @param element Notebook, Markdown File, or book's notebook that will be added to the book.
 	 * @param targetBook Book that will be modified.
 	*/
-	async addNotebook(notebook: BookTreeItem, book: BookTreeItem): Promise<void> {
+	async moveFile(file: BookTreeItem, book: BookTreeItem): Promise<void> {
 		const rootPath = book.rootContentPath;
-		const notebookPath = path.parse(notebook.book.contentPath);
+		const filePath = path.parse(file.book.contentPath);
 		let fileName = undefined;
 		try {
-			await fs.move(notebook.book.contentPath, path.join(rootPath, notebookPath.base), { overwrite: false });
+			await fs.move(file.book.contentPath, path.join(rootPath, filePath.base), { overwrite: false });
 		} catch (error) {
 			if (error.code === 'EEXIST') {
-				fileName = await this.renameFile(notebook.book.contentPath, path.join(rootPath, notebookPath.base));
+				fileName = await this.renameFile(file.book.contentPath, path.join(rootPath, filePath.base));
 			}
 			else {
 				throw (error);
@@ -368,14 +377,14 @@ export class BookTocManager implements IBookTocManager {
 		}

 		if (this._sourceBook) {
-			const sectionTOC = this._sourceBook.bookItems[0].findChildSection(notebook.uri);
+			const sectionTOC = this._sourceBook.bookItems[0].findChildSection(file.uri);
 			if (sectionTOC) {
 				this.newSection = sectionTOC;
 			}
 		}
-		fileName = fileName === undefined ? notebookPath.name : path.parse(fileName).name;
+		fileName = fileName === undefined ? filePath.name : path.parse(fileName).name;
 		this.newSection.file = path.posix.join(path.posix.sep, fileName);
-		this.newSection.title = notebook.book.title;
+		this.newSection.title = file.book.title;
 		if (book.version === BookVersion.v1) {
 			// here we only convert if is v1 because we are already using the v2 notation for every book that we read.
 			this.newSection = convertTo(book.version, this.newSection);
@@ -388,50 +397,76 @@ export class BookTocManager implements IBookTocManager {
 	 * @param targetBook Book that will be modified.
 	 * @param targetSection Book section that'll be modified.
 	*/
-	public async updateBook(element: BookTreeItem, targetBook: BookTreeItem, targetSection?: JupyterBookSection): Promise<void> {
-		if (element.contextValue === 'section') {
-			// modify the sourceBook toc and remove the section
-			const findSection: JupyterBookSection = { file: element.book.page.file, title: element.book.page.title };
-			await this.addSection(element, targetBook);
-			await this.updateTOC(element.book.version, element.tableOfContentsPath, findSection, undefined);
-			if (targetSection) {
-				// adding new section to the target book toc file
-				await this.updateTOC(targetBook.book.version, targetBook.tableOfContentsPath, targetSection, this.newSection);
+	public async updateBook(element: BookTreeItem, targetItem: BookTreeItem, targetSection?: JupyterBookSection): Promise<void> {
+		try {
+			if (element.contextValue === 'section') {
+				// modify the sourceBook toc and remove the section
+				const findSection: JupyterBookSection = { file: element.book.page.file, title: element.book.page.title };
+				await this.moveSectionFiles(element, targetItem);
+				// remove section from book
+				await this.updateTOC(element.book.version, element.tableOfContentsPath, findSection, undefined);
+				// add section to book
+				await this.updateTOC(targetItem.book.version, targetItem.tableOfContentsPath, targetSection, this.newSection);
 			}
 			else {
-				//since there's not a target section, we just append the section at the end of the file
-				if (this.targetBookContentPath !== this.sourceBookContentPath) {
-					this.tableofContents = targetBook.sections.map(section => convertTo(targetBook.version, section));
+				// the notebook is part of a book so we need to modify its toc as well
+				const findSection = { file: element.book.page.file, title: element.book.page.title };
+				await this.moveFile(element, targetItem);
+				if (element.contextValue === 'savedBookNotebook' || element.contextValue === 'Markdown') {
+					// remove notebook entry from book toc
+					await this.updateTOC(element.book.version, element.tableOfContentsPath, findSection, undefined);
+				} else {
+					// close the standalone notebook, so it doesn't throw an error when we move the notebook to new location.
+					await vscode.commands.executeCommand('notebook.command.closeNotebook', element);
+				}
+				await this.updateTOC(targetItem.book.version, targetItem.tableOfContentsPath, targetSection, this.newSection);
+			}
+		} catch (e) {
+			await this.recovery();
+			vscode.window.showErrorMessage(loc.editBookError(element.book.contentPath, e instanceof Error ? e.message : e));
+		} finally {
+			try {
+				await this._targetBook.reinitializeContents();
+			} finally {
+				if (this._sourceBook && this._sourceBook.bookPath !== this._targetBook.bookPath) {
+					// refresh source book model to pick up latest changes
+					await this._sourceBook.reinitializeContents();
 				}
-				this.tableofContents.push(this.newSection);
-				await fs.writeFile(targetBook.tableOfContentsPath, yaml.safeDump(this.tableofContents, { lineWidth: Infinity, noRefs: true, skipInvalid: true }));
 			}
 		}
-		else if (element.contextValue === 'savedNotebook' || element.contextValue === 'savedBookNotebook') {
-			// the notebook is part of a book so we need to modify its toc as well
-			const findSection = { file: element.book.page.file, title: element.book.page.title };
-			await this.addNotebook(element, targetBook);
-			if (element.tableOfContentsPath) {
-				await this.updateTOC(element.book.version, element.tableOfContentsPath, findSection, undefined);
-			} else {
-				// close the standalone notebook, so it doesn't throw an error when we move the notebook to new location.
-				await vscode.commands.executeCommand('notebook.command.closeNotebook', element);
-			}
-			if (!targetSection) {
-				if (this.targetBookContentPath !== this.sourceBookContentPath) {
-					this.tableofContents = targetBook.sections.map(section => convertTo(targetBook.version, section));
-				}
-				this.tableofContents.push(this.newSection);
-				await fs.writeFile(targetBook.tableOfContentsPath, yaml.safeDump(this.tableofContents, { lineWidth: Infinity, noRefs: true, skipInvalid: true }));
-			} else {
-				await this.updateTOC(targetBook.book.version, targetBook.tableOfContentsPath, targetSection, this.newSection);
-			}
+	}
+
+	public async addNewFile(pathDetails: TocEntryPathHandler, bookItem: BookTreeItem): Promise<void> {
+		let findSection: JupyterBookSection | undefined = undefined;
+		await fs.writeFile(pathDetails.filePath, '');
+		if (bookItem.contextValue === 'section') {
+			findSection = { file: bookItem.book.page.file, title: bookItem.book.page.title };
+		}
+		let fileEntryInToc: JupyterBookSection = {
+			title: pathDetails.titleInTocEntry,
+			file: pathDetails.fileInTocEntry
+		};
+		if (bookItem.book.version === BookVersion.v1) {
+			fileEntryInToc = convertTo(BookVersion.v1, fileEntryInToc);
+		}
+		// book is already opened in notebooks view, so modifying the toc will add the new file automatically
+		await this.updateTOC(bookItem.book.version, bookItem.tableOfContentsPath, findSection, fileEntryInToc);
+		await this._sourceBook.reinitializeContents();
+		await this.openResource(pathDetails);
+	}
+
+	public async openResource(pathDetails: TocEntryPathHandler): Promise<void> {
+		if (pathDetails.fileExtension === FileExtension.Notebook) {
+			await vscode.commands.executeCommand('bookTreeView.openNotebook', pathDetails.filePath);
+		} else {
+			await vscode.commands.executeCommand('bookTreeView.openMarkdown', pathDetails.filePath);
 		}
 	}

 	public async removeNotebook(element: BookTreeItem): Promise<void> {
 		const findSection = { file: element.book.page.file, title: element.book.page.title };
 		await this.updateTOC(element.book.version, element.tableOfContentsPath, findSection, undefined);
+		await this._sourceBook.reinitializeContents();
 	}

 	public get modifiedDir(): Set<string> {
--- a/extensions/notebook/src/book/bookTreeItem.ts
+++ b/extensions/notebook/src/book/bookTreeItem.ts
@@ -41,7 +41,7 @@ export class BookTreeItem extends vscode.TreeItem {
 	private _uri: string | undefined;
 	private _previousUri: string;
 	private _nextUri: string;
-	public readonly version: string;
+	public readonly version: BookVersion;
 	public command: vscode.Command;
 	public resourceUri: vscode.Uri;
 	private _rootContentPath: string;
@@ -71,7 +71,7 @@ export class BookTreeItem extends vscode.TreeItem {
 				this.contextValue = BookTreeItemType.ExternalLink;

 			} else {
-				this.contextValue = book.type === BookTreeItemType.Notebook ? (isBookItemPinned(book.contentPath) ? BookTreeItemType.pinnedNotebook : getNotebookType(book)) : BookTreeItemType.section;
+				this.contextValue = book.type === BookTreeItemType.Notebook ? (isBookItemPinned(book.contentPath) ? BookTreeItemType.pinnedNotebook : getNotebookType(book)) : BookTreeItemType.Markdown;
 			}
 			this.setPageVariables();
 			this.setCommand();
@@ -84,7 +84,7 @@ export class BookTreeItem extends vscode.TreeItem {
 		}
 		else {
 			// if it's a section, book or a notebook's book then we set the table of contents path.
-			if (this.book.type === BookTreeItemType.Book || this.contextValue === BookTreeItemType.section || (book.tableOfContents.sections && book.type === BookTreeItemType.Notebook)) {
+			if (this.book.type === BookTreeItemType.Book || this.contextValue === BookTreeItemType.section || this.contextValue === BookTreeItemType.savedBookNotebook || book.tableOfContents.sections && book.type === BookTreeItemType.Markdown) {
 				this._tableOfContentsPath = getTocPath(this.book.version, this.book.root);
 			}
 			this._rootContentPath = getContentPath(this.book.version, this.book.root, '');
--- a/extensions/notebook/src/book/bookTreeView.ts
+++ b/extensions/notebook/src/book/bookTreeView.ts
@@ -16,10 +16,11 @@ import { Deferred } from '../common/promise';
 import { IBookTrustManager, BookTrustManager } from './bookTrustManager';
 import * as loc from '../common/localizedConstants';
 import * as glob from 'fast-glob';
-import { getPinnedNotebooks, confirmReplace, getNotebookType } from '../common/utils';
+import { getPinnedNotebooks, confirmMessageDialog, getNotebookType, FileExtension } from '../common/utils';
 import { IBookPinManager, BookPinManager } from './bookPinManager';
 import { BookTocManager, IBookTocManager, quickPickResults } from './bookTocManager';
 import { CreateBookDialog } from '../dialog/createBookDialog';
+import { AddFileDialog } from '../dialog/addFileDialog';
 import { getContentPath } from './bookVersionHandler';
 import { TelemetryReporter, BookTelemetryView, NbTelemetryActions } from '../telemetry';

@@ -197,37 +198,10 @@ export class BookTreeViewProvider implements vscode.TreeDataProvider<BookTreeIte
 			const pickedSection = selectionResults.quickPickSection;
 			const updateBook = selectionResults.book;
 			const targetSection = pickedSection.detail !== undefined ? updateBook.findChildSection(pickedSection.detail) : undefined;
-			if (movingElement.tableOfContents.sections) {
-				if (movingElement.contextValue === 'savedNotebook' || movingElement.contextValue === 'savedBookNotebook') {
-					let sourceBook = this.books.find(book => book.getNotebook(path.normalize(movingElement.book.contentPath)));
-					movingElement.tableOfContents.sections = sourceBook?.bookItems[0].sections;
-				}
-			}
 			const sourceBook = this.books.find(book => book.bookPath === movingElement.book.root);
 			const targetBook = this.books.find(book => book.bookPath === updateBook.book.root);
-			this.bookTocManager = new BookTocManager(targetBook, sourceBook);
-			// remove watch on toc file from source book.
-			if (sourceBook) {
-				sourceBook.unwatchTOC();
-			}
-			try {
-				await this.bookTocManager.updateBook(movingElement, updateBook, targetSection);
-			} catch (e) {
-				await this.bookTocManager.recovery();
-				vscode.window.showErrorMessage(loc.editBookError(updateBook.book.contentPath, e instanceof Error ? e.message : e));
-			} finally {
-				try {
-					await targetBook.reinitializeContents();
-				} finally {
-					if (sourceBook && sourceBook.bookPath !== targetBook.bookPath) {
-						// refresh source book model to pick up latest changes
-						await sourceBook.reinitializeContents();
-					}
-					if (sourceBook) {
-						sourceBook.watchTOC();
-					}
-				}
-			}
+			this.bookTocManager = new BookTocManager(sourceBook, targetBook);
+			await this.bookTocManager.updateBook(movingElement, updateBook, targetSection);
 		}
 	}

@@ -276,7 +250,23 @@ export class BookTreeViewProvider implements vscode.TreeDataProvider<BookTreeIte
 		}
 	}

+	async createMarkdownFile(bookItem: BookTreeItem): Promise<void> {
+		const book = this.books.find(b => b.bookPath === bookItem.root);
+		this.bookTocManager = new BookTocManager(book);
+		const dialog = new AddFileDialog(this.bookTocManager, bookItem, FileExtension.Markdown);
+		await dialog.createDialog();
+	}
+
+	async createNotebook(bookItem: BookTreeItem): Promise<void> {
+		const book = this.books.find(b => b.bookPath === bookItem.root);
+		this.bookTocManager = new BookTocManager(book);
+		const dialog = new AddFileDialog(this.bookTocManager, bookItem, FileExtension.Notebook);
+		await dialog.createDialog();
+	}
+
 	async removeNotebook(bookItem: BookTreeItem): Promise<void> {
+		const book = this.books.find(b => b.bookPath === bookItem.root);
+		this.bookTocManager = new BookTocManager(book);
 		return this.bookTocManager.removeNotebook(bookItem);
 	}

@@ -479,7 +469,7 @@ export class BookTreeViewProvider implements vscode.TreeDataProvider<BookTreeIte
 				let destinationUri: vscode.Uri = vscode.Uri.file(path.join(pickedFolder.fsPath, path.basename(this.currentBook.bookPath)));
 				if (destinationUri) {
 					if (await fs.pathExists(destinationUri.fsPath)) {
-						let doReplace = await confirmReplace(this.prompter);
+						let doReplace = await confirmMessageDialog(this.prompter, loc.confirmReplace);
 						if (!doReplace) {
 							return undefined;
 						}
--- a/extensions/notebook/src/book/tocEntryPathHandler.ts
+++ b/extensions/notebook/src/book/tocEntryPathHandler.ts
@@ -0,0 +1,20 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as path from 'path';
+import { FileExtension } from '../common/utils';
+
+export class TocEntryPathHandler {
+	public readonly fileInTocEntry: string;
+	public readonly titleInTocEntry: string;
+	public readonly fileExtension: FileExtension;
+	constructor(public readonly filePath: string, public readonly bookRoot: string, title?: string) {
+		const relativePath = path.relative(bookRoot, filePath);
+		const pathDetails = path.parse(relativePath);
+		this.fileInTocEntry = relativePath.replace(pathDetails.ext, '');
+		this.titleInTocEntry = title ?? pathDetails.name;
+		this.fileExtension = pathDetails.ext === FileExtension.Notebook ? FileExtension.Notebook : FileExtension.Markdown;
+	}
+}
--- a/extensions/notebook/src/common/localizedConstants.ts
+++ b/extensions/notebook/src/common/localizedConstants.ts
@@ -94,8 +94,18 @@ export const name = localize('name', "Name");
 export const saveLocation = localize('saveLocation', "Save location");
 export const contentFolder = localize('contentFolder', "Content folder (Optional)");
 export const msgContentFolderError = localize('msgContentFolderError', "Content folder path does not exist");
-export const msgSaveFolderError = localize('msgSaveFolderError', "Save location path does not exist");
+export const msgSaveFolderError = localize('msgSaveFolderError', "Save location path does not exist.");
 export function msgCreateBookWarningMsg(file: string): string { return localize('msgCreateBookWarningMsg', "Error while trying to access: {0}", file); }

+// Add a notebook dialog constants
+export const newNotebook = localize('newNotebook', "New Notebook (Preview)");
+export const newMarkdown = localize('newMarkdown', "New Markdown (Preview)");
+export const fileExtension = localize('fileExtension', "File Extension");
+export const confirmOverwrite = localize('confirmOverwrite', "File already exists. Are you sure you want to overwrite this file?");
+export const title = localize('title', "Title");
+export const fileName = localize('fileName', "File Name");
+export const msgInvalidSaveFolder = localize('msgInvalidSaveFolder', "Save location path is not valid.");
+export function msgDuplicadFileName(file: string): string { return localize('msgDuplicadFileName', "File {0} already exists in the destination folder", file); }
+


--- a/extensions/notebook/src/common/utils.ts
+++ b/extensions/notebook/src/common/utils.ts
@@ -12,8 +12,8 @@ import * as azdata from 'azdata';
 import * as crypto from 'crypto';
 import { notebookLanguages, notebookConfigKey, pinnedBooksConfigKey, AUTHTYPE, INTEGRATED_AUTH, KNOX_ENDPOINT_PORT, KNOX_ENDPOINT_SERVER } from './constants';
 import { IPrompter, IQuestion, QuestionTypes } from '../prompts/question';
-import * as loc from '../common/localizedConstants';
 import { BookTreeItemFormat, BookTreeItemType } from '../book/bookTreeItem';
+import * as loc from './localizedConstants';

 const localize = nls.loadMessageBundle();

@@ -488,11 +488,30 @@ export interface IBookNotebook {
 	notebookPath: string;
 }

+export enum FileExtension {
+	Markdown = '.md',
+	Notebook = '.ipynb'
+}
+
+
 //Confirmation message dialog
-export async function confirmReplace(prompter: IPrompter): Promise<boolean> {
+export async function confirmMessageDialog(prompter: IPrompter, msg: string): Promise<boolean> {
 	return await prompter.promptSingle<boolean>(<IQuestion>{
 		type: QuestionTypes.confirm,
-		message: loc.confirmReplace,
+		message: msg,
 		default: false
 	});
 }
+
+export async function selectFolder(): Promise<string | undefined> {
+	let uris = await vscode.window.showOpenDialog({
+		canSelectFiles: false,
+		canSelectMany: false,
+		canSelectFolders: true,
+		openLabel: loc.labelSelectFolder
+	});
+	if (uris?.length > 0) {
+		return uris[0].fsPath;
+	}
+	return undefined;
+}
--- a/extensions/notebook/src/dialog/addFileDialog.ts
+++ b/extensions/notebook/src/dialog/addFileDialog.ts
@@ -0,0 +1,111 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+import * as azdata from 'azdata';
+import * as path from 'path';
+import { pathExists } from 'fs-extra';
+import * as loc from '../common/localizedConstants';
+import { IBookTocManager } from '../book/bookTocManager';
+import { confirmMessageDialog, FileExtension } from '../common/utils';
+import { IPrompter } from '../prompts/question';
+import CodeAdapter from '../prompts/adapter';
+import { BookTreeItem, BookTreeItemType } from '../book/bookTreeItem';
+import { TocEntryPathHandler } from '../book/tocEntryPathHandler';
+
+export class AddFileDialog {
+	private _dialog: azdata.window.Dialog;
+	private readonly _dialogName = 'addNewFileBookTreeViewDialog';
+	public view: azdata.ModelView;
+	private _formModel: azdata.FormContainer;
+	private _fileNameInputBox: azdata.InputBoxComponent;
+	private _titleInputBox: azdata.InputBoxComponent;
+	private _saveLocationInputBox: azdata.TextComponent;
+	private _prompter: IPrompter;
+
+	constructor(private _tocManager: IBookTocManager, private _bookItem: BookTreeItem, private _extension: FileExtension) {
+		this._prompter = new CodeAdapter();
+	}
+
+	public async validatePath(folderPath: string, fileBasename: string): Promise<void> {
+		const destinationUri = path.join(folderPath, fileBasename);
+		if (await pathExists(destinationUri)) {
+			const doOverwrite = await confirmMessageDialog(this._prompter, loc.confirmOverwrite);
+			if (!doOverwrite) {
+				throw (new Error(loc.msgDuplicadFileName(destinationUri)));
+			}
+		}
+		if (!(await pathExists(folderPath))) {
+			throw (new Error(loc.msgSaveFolderError));
+		}
+	}
+
+	public async createDialog(): Promise<void> {
+		const dialogTitle = this._extension === FileExtension.Notebook ? loc.newNotebook : loc.newMarkdown;
+		this._dialog = azdata.window.createModelViewDialog(dialogTitle, this._dialogName);
+		this._dialog.registerContent(async view => {
+			this.view = view;
+			this._fileNameInputBox = this.view.modelBuilder.inputBox()
+				.withProperties({
+					enabled: true,
+					width: '400px'
+				}).component();
+
+			this._titleInputBox = this.view.modelBuilder.inputBox()
+				.withProperties({
+					enabled: true,
+					width: '400px'
+				}).component();
+
+			this._saveLocationInputBox = this.view.modelBuilder.inputBox()
+				.withProperties({
+					value: this._bookItem.contextValue === BookTreeItemType.Book ? this._bookItem.rootContentPath : path.dirname(this._bookItem.resourceUri.fsPath),
+					enabled: false,
+					width: '400px'
+				}).component();
+
+			this._formModel = this.view.modelBuilder.formContainer()
+				.withFormItems([{
+					components: [
+						{
+							title: loc.title,
+							required: true,
+							component: this._titleInputBox
+						},
+						{
+							component: this._fileNameInputBox,
+							title: loc.fileName,
+							required: true
+						},
+						{
+							component: this._saveLocationInputBox,
+							title: loc.saveLocation,
+							required: false
+						}
+					],
+					title: ''
+				}]).component();
+			await this.view.initializeModel(this._formModel);
+		});
+		this._dialog.okButton.label = loc.add;
+		this._dialog.registerCloseValidator(async () => await this.createFile());
+		azdata.window.openDialog(this._dialog);
+	}
+
+	private async createFile(): Promise<boolean> {
+		try {
+			const dirPath = this._bookItem.contextValue === BookTreeItemType.Book ? this._bookItem.rootContentPath : path.dirname(this._bookItem.resourceUri.fsPath);
+			const filePath = path.join(dirPath, this._fileNameInputBox.value).concat(this._extension);
+			await this.validatePath(dirPath, this._fileNameInputBox.value.concat(this._extension));
+			const pathDetails = new TocEntryPathHandler(filePath, this._bookItem.rootContentPath, this._titleInputBox.value);
+			await this._tocManager.addNewFile(pathDetails, this._bookItem);
+			return true;
+		} catch (error) {
+			this._dialog.message = {
+				text: error.message,
+				level: azdata.window.MessageLevel.Error
+			};
+			return false;
+		}
+	}
+}
--- a/extensions/notebook/src/dialog/createBookDialog.ts
+++ b/extensions/notebook/src/dialog/createBookDialog.ts
@@ -9,7 +9,7 @@ import { pathExists, remove } from 'fs-extra';
 import * as loc from '../common/localizedConstants';
 import { IconPathHelper } from '../common/iconHelper';
 import { IBookTocManager } from '../book/bookTocManager';
-import { confirmReplace } from '../common/utils';
+import { confirmMessageDialog } from '../common/utils';
 import { IPrompter } from '../prompts/question';
 import CodeAdapter from '../prompts/adapter';

@@ -51,7 +51,7 @@ export class CreateBookDialog {
 	public async validatePath(folderPath: string): Promise<boolean> {
 		const destinationUri = path.join(folderPath, path.basename(this.bookNameInputBox.value));
 		if (await pathExists(destinationUri)) {
-			const doReplace = await confirmReplace(this.prompter);
+			const doReplace = await confirmMessageDialog(this.prompter, loc.confirmReplace);
 			if (doReplace) {
 				//remove folder if exists
 				await remove(destinationUri);
--- a/extensions/notebook/src/extension.ts
+++ b/extensions/notebook/src/extension.ts
@@ -36,32 +36,32 @@ export async function activate(extensionContext: vscode.ExtensionContext): Promi
 	 * This is the command used in the extension generator to open a Jupyter Book.
 	 */
 	extensionContext.subscriptions.push(vscode.commands.registerCommand('bookTreeView.openBook', (bookPath: string, openAsUntitled: boolean, urlToOpen?: string) => openAsUntitled ? providedBookTreeViewProvider.openBook(bookPath, urlToOpen, true) : bookTreeViewProvider.openBook(bookPath, urlToOpen, true)));
-	extensionContext.subscriptions.push(vscode.commands.registerCommand('bookTreeView.openNotebook', (resource) => bookTreeViewProvider.openNotebook(resource)));
-	extensionContext.subscriptions.push(vscode.commands.registerCommand('bookTreeView.openUntitledNotebook', (resource) => providedBookTreeViewProvider.openNotebookAsUntitled(resource)));
-	extensionContext.subscriptions.push(vscode.commands.registerCommand('bookTreeView.openMarkdown', (resource) => bookTreeViewProvider.openMarkdown(resource)));
-	extensionContext.subscriptions.push(vscode.commands.registerCommand('bookTreeView.openExternalLink', (resource) => bookTreeViewProvider.openExternalLink(resource)));
+	extensionContext.subscriptions.push(vscode.commands.registerCommand('bookTreeView.addFileToView', (resource: string) => bookTreeViewProvider.openBook(resource, resource, true, true)));
+	extensionContext.subscriptions.push(vscode.commands.registerCommand('bookTreeView.openNotebook', (resource: string) => bookTreeViewProvider.openNotebook(resource)));
+	extensionContext.subscriptions.push(vscode.commands.registerCommand('bookTreeView.openUntitledNotebook', (resource: string) => providedBookTreeViewProvider.openNotebookAsUntitled(resource)));
+	extensionContext.subscriptions.push(vscode.commands.registerCommand('bookTreeView.openMarkdown', (resource: string) => bookTreeViewProvider.openMarkdown(resource)));
+	extensionContext.subscriptions.push(vscode.commands.registerCommand('bookTreeView.openExternalLink', (resource: string) => bookTreeViewProvider.openExternalLink(resource)));
 	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.saveBook', () => providedBookTreeViewProvider.saveJupyterBooks()));
-	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.trustBook', (resource) => bookTreeViewProvider.trustBook(resource)));
-	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.searchBook', (item) => bookTreeViewProvider.searchJupyterBooks(item)));
+	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.trustBook', (item: BookTreeItem) => bookTreeViewProvider.trustBook(item)));
+	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.searchBook', (item: BookTreeItem) => bookTreeViewProvider.searchJupyterBooks(item)));
 	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.searchProvidedBook', () => providedBookTreeViewProvider.searchJupyterBooks()));
 	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.openBook', () => bookTreeViewProvider.openNewBook()));
-	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.closeBook', (book: any) => bookTreeViewProvider.closeBook(book)));
-	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.closeNotebook', (book: any) => bookTreeViewProvider.closeBook(book)));
+	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.closeBook', (book: BookTreeItem) => bookTreeViewProvider.closeBook(book)));
+	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.closeNotebook', (notebook: BookTreeItem) => bookTreeViewProvider.closeBook(notebook)));
 	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.removeNotebook', (book: BookTreeItem) => bookTreeViewProvider.removeNotebook(book)));
+	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.addNotebook', (book: BookTreeItem) => bookTreeViewProvider.createNotebook(book)));
+	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.addMarkdown', (book: BookTreeItem) => bookTreeViewProvider.createMarkdownFile(book)));
+	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.createBook', () => bookTreeViewProvider.createBook()));
 	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.openNotebookFolder', (folderPath?: string, urlToOpen?: string, showPreview?: boolean) => bookTreeViewProvider.openNotebookFolder(folderPath, urlToOpen, showPreview)));
-	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.pinNotebook', async (book: any) => {
+	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.pinNotebook', async (book: BookTreeItem) => {
 		await bookTreeViewProvider.pinNotebook(book);
 		await pinnedBookTreeViewProvider.addNotebookToPinnedView(book);
 	}));
-	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.unpinNotebook', async (book: any) => {
+	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.unpinNotebook', async (book: BookTreeItem) => {
 		await bookTreeViewProvider.unpinNotebook(book);
 		await pinnedBookTreeViewProvider.removeNotebookFromPinnedView(book);
 	}));

-	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.createBook', async () => {
-		await bookTreeViewProvider.createBook();
-	}));
-
 	extensionContext.subscriptions.push(vscode.commands.registerCommand('notebook.command.moveTo', async (book: BookTreeItem) => {
 		await bookTreeViewProvider.editBook(book);
 	}));
--- a/extensions/notebook/src/test/book/bookTocManager.test.ts
+++ b/extensions/notebook/src/test/book/bookTocManager.test.ts
@@ -22,7 +22,6 @@ import * as loc from '../../common/localizedConstants';
 import { BookVersion } from '../../book/bookVersionHandler';
 import * as yaml from 'js-yaml';

-
 export function equalTOC(actualToc: IJupyterBookSectionV2[], expectedToc: IJupyterBookSectionV2[]): boolean {
 	for (let [i, section] of actualToc.entries()) {
 		if (section.title !== expectedToc[i].title || section.file !== expectedToc[i].file) {
@@ -45,6 +44,37 @@ export function equalSections(actualSection: JupyterBookSection, expectedSection
 	return true;
 }

+function BookModelStub(root: string, bookItem: BookTreeItem, extension: MockExtensionContext): BookModel {
+	const bookModel = new BookModel(root, false, false, extension, undefined);
+	sinon.stub(bookModel, 'bookItems').value([bookItem]);
+	sinon.stub(bookModel, 'unwatchTOC').returns();
+	sinon.stub(bookModel, 'reinitializeContents').resolves();
+	sinon.stub(bookModel, 'bookPath').value(root);
+	return bookModel;
+}
+
+function createBookTreeItemFormat(item: any, root: string, version: BookVersion): BookTreeItemFormat {
+	const pageFormat = item.type === BookTreeItemType.section ? {
+		title: item.sectionName,
+		file: item.uri,
+		sections: item.sectionFormat
+	} : item.sectionFormat;
+	const sections = item.type === BookTreeItemType.section ? item.sectionFormat : [item.sectionFormat];
+	return {
+		title: item.sectionName,
+		contentPath: item.contentPath,
+		root: root,
+		tableOfContents: {
+			sections: sections
+		},
+		isUntitled: undefined,
+		treeItemCollapsibleState: undefined,
+		type: item.type,
+		version: version,
+		page: pageFormat
+	};
+}
+
 describe('BookTocManagerTests', function () {
 	describe('CreatingBooks', () => {
 		let notebooks: string[];
@@ -145,12 +175,14 @@ describe('BookTocManagerTests', function () {
 							'title': 'Notebook 2',
 							'file': path.posix.join(path.posix.sep, 'sectionA', 'notebook2')
 						}
-					]
+					],
+					'type': BookTreeItemType.savedBook
 				},
 				sectionA: {
 					'contentPath': path.posix.join(sourceBookFolderPath, 'content', 'sectionA', 'readme.md'),
 					'sectionRoot': path.posix.join(sourceBookFolderPath, 'content', 'sectionA'),
 					'sectionName': 'Section A',
+					'uri': path.posix.join(path.posix.sep, 'sectionA', 'readme'),
 					'notebook1': path.posix.join(sourceBookFolderPath, 'content', 'sectionA', 'notebook1.ipynb'),
 					'notebook2': path.posix.join(sourceBookFolderPath, 'content', 'sectionA', 'notebook2.ipynb'),
 					'sectionFormat': [
@@ -162,12 +194,14 @@ describe('BookTocManagerTests', function () {
 							'title': 'Notebook 2',
 							'file': path.posix.join(path.posix.sep, 'sectionA', 'notebook2')
 						}
-					]
+					],
+					'type': BookTreeItemType.section
 				},
 				sectionB: {
 					'contentPath': path.posix.join(sourceBookFolderPath, 'content', 'sectionB', 'readme.md'),
 					'sectionRoot': path.posix.join(sourceBookFolderPath, 'content', 'sectionB'),
 					'sectionName': 'Section B',
+					'uri': path.posix.join(path.posix.sep, 'sectionB', 'readme'),
 					'notebook3': path.posix.join(sourceBookFolderPath, 'content', 'sectionB', 'notebook3.ipynb'),
 					'notebook4': path.posix.join(sourceBookFolderPath, 'content', 'sectionB', 'notebook4.ipynb'),
 					'sectionFormat': [
@@ -179,10 +213,24 @@ describe('BookTocManagerTests', function () {
 							'title': 'Notebook 4',
 							'file': path.posix.join(path.posix.sep, 'sectionB', 'notebook4')
 						}
-					]
+					],
+					'type': BookTreeItemType.section
 				},
 				notebook5: {
-					'contentPath': path.posix.join(sourceBookFolderPath, 'content', 'notebook5.ipynb')
+					'contentPath': path.posix.join(sourceBookFolderPath, 'content', 'notebook5.ipynb'),
+					'sectionFormat': {
+						'title': 'Notebook 5',
+						'file': path.posix.join(path.posix.sep, 'notebook5')
+					},
+					'type': BookTreeItemType.Notebook
+				},
+				duplicatedNotebook: {
+					'contentPath': path.posix.join(duplicatedNotebookPath, 'notebook5.ipynb'),
+					'sectionFormat': {
+						'title': 'Notebook 5',
+						'file': path.posix.join(path.posix.sep, 'notebook5')
+					},
+					'type': BookTreeItemType.Notebook
 				},
 				targetBook: {
 					'rootBookFolderPath': targetBookFolderPath,
@@ -204,19 +252,22 @@ describe('BookTocManagerTests', function () {
 								}
 							]
 						}
-					]
+					],
+					'type': BookTreeItemType.Book
 				},
 				sectionC: {
 					'contentPath': path.posix.join(targetBookFolderPath, 'content', 'sectionC', 'readme.md'),
 					'sectionRoot': path.posix.join(targetBookFolderPath, 'content', 'sectionC'),
 					'sectionName': 'Section C',
+					'uri': path.posix.join(path.posix.sep, 'sectionC', 'readme'),
 					'notebook6': path.posix.join(targetBookFolderPath, 'content', 'sectionC', 'notebook6.ipynb'),
 					'sectionFormat': [
 						{
 							'title': 'Notebook 6',
 							'file': path.posix.join(path.posix.sep, 'sectionC', 'notebook6')
 						}
-					]
+					],
+					'type': BookTreeItemType.section
 				}
 			}, {
 				it: 'using the jupyter-book legacy version >= 0.7.0',
@@ -231,6 +282,7 @@ describe('BookTocManagerTests', function () {
 					'contentPath': path.posix.join(sourceBookFolderPath, 'sectionA', 'readme.md'),
 					'sectionRoot': path.posix.join(sourceBookFolderPath, 'sectionA'),
 					'sectionName': 'Section A',
+					'uri': path.posix.join(path.posix.sep, 'sectionA', 'readme'),
 					'notebook1': path.posix.join(sourceBookFolderPath, 'sectionA', 'notebook1.ipynb'),
 					'notebook2': path.posix.join(sourceBookFolderPath, 'sectionA', 'notebook2.ipynb'),
 					'sectionFormat': [
@@ -242,12 +294,14 @@ describe('BookTocManagerTests', function () {
 							'title': 'Notebook 2',
 							'file': path.posix.join(path.posix.sep, 'sectionA', 'notebook2')
 						}
-					]
+					],
+					'type': BookTreeItemType.section
 				},
 				sectionB: {
 					'contentPath': path.posix.join(sourceBookFolderPath, 'sectionB', 'readme.md'),
 					'sectionRoot': path.posix.join(sourceBookFolderPath, 'sectionB'),
 					'sectionName': 'Section B',
+					'uri': path.posix.join(path.posix.sep, 'sectionB', 'readme'),
 					'notebook3': path.posix.join(sourceBookFolderPath, 'sectionB', 'notebook3.ipynb'),
 					'notebook4': path.posix.join(sourceBookFolderPath, 'sectionB', 'notebook4.ipynb'),
 					'sectionFormat': [
@@ -259,10 +313,24 @@ describe('BookTocManagerTests', function () {
 							'title': 'Notebook 4',
 							'file': path.posix.join(path.posix.sep, 'sectionB', 'notebook4')
 						}
-					]
+					],
+					'type': BookTreeItemType.section
 				},
 				notebook5: {
-					'contentPath': path.posix.join(sourceBookFolderPath, 'notebook5.ipynb')
+					'contentPath': path.posix.join(sourceBookFolderPath, 'notebook5.ipynb'),
+					'sectionFormat': {
+						'title': 'Notebook 5',
+						'file': path.posix.join(path.posix.sep, 'notebook5')
+					},
+					'type': BookTreeItemType.Notebook
+				},
+				duplicatedNotebook: {
+					'contentPath': path.posix.join(duplicatedNotebookPath, 'notebook5.ipynb'),
+					'sectionFormat': {
+						'title': 'Notebook 5',
+						'file': path.posix.join(path.posix.sep, 'notebook5')
+					},
+					'type': BookTreeItemType.Notebook
 				},
 				targetBook: {
 					'rootBookFolderPath': targetBookFolderPath,
@@ -284,19 +352,22 @@ describe('BookTocManagerTests', function () {
 								}
 							]
 						}
-					]
+					],
+					'type': BookTreeItemType.Book
 				},
 				sectionC: {
 					'contentPath': path.posix.join(targetBookFolderPath, 'sectionC', 'readme.md'),
 					'sectionRoot': path.posix.join(targetBookFolderPath, 'sectionC'),
 					'sectionName': 'Section C',
+					'uri': path.posix.join(path.posix.sep, 'sectionC', 'readme'),
 					'notebook6': path.posix.join(targetBookFolderPath, 'sectionC', 'notebook6.ipynb'),
 					'sectionFormat': [
 						{
 							'title': 'Notebook 6',
 							'file': path.posix.join(path.posix.sep, 'sectionC', 'notebook6')
 						}
-					]
+					],
+					'type': BookTreeItemType.section
 				}
 			}
 		];
@@ -317,103 +388,11 @@ describe('BookTocManagerTests', function () {
 						version: run.version,
 						page: run.targetBook.toc
 					};
-
-					let sectionCTreeItemFormat: BookTreeItemFormat = {
-						title: run.sectionC.sectionName,
-						contentPath: run.sectionC.contentPath,
-						root: run.targetBook.rootBookFolderPath,
-						tableOfContents: {
-							sections: run.sectionC.sectionFormat
-						},
-						isUntitled: undefined,
-						treeItemCollapsibleState: undefined,
-						type: BookTreeItemType.Markdown,
-						version: run.version,
-						page: run.sectionC.sectionFormat
-					};
-
-					// section A is from source book
-					let sectionATreeItemFormat: BookTreeItemFormat = {
-						title: run.sectionA.sectionName,
-						contentPath: run.sectionA.contentPath,
-						root: run.sourceBook.rootBookFolderPath,
-						tableOfContents: {
-							sections: run.sectionA.sectionFormat
-						},
-						isUntitled: undefined,
-						treeItemCollapsibleState: undefined,
-						type: BookTreeItemType.Markdown,
-						version: run.version,
-						page: {
-							title: run.sectionA.sectionName,
-							file: path.posix.join(path.posix.sep, 'sectionA', 'readme'),
-							sections: run.sectionA.sectionFormat
-						}
-					};
-
-					// section B is from source book
-					let sectionBTreeItemFormat: BookTreeItemFormat = {
-						title: run.sectionB.sectionName,
-						contentPath: run.sectionB.contentPath,
-						root: run.sourceBook.rootBookFolderPath,
-						tableOfContents: {
-							sections: run.sectionB.sectionFormat
-						},
-						isUntitled: undefined,
-						treeItemCollapsibleState: undefined,
-						type: BookTreeItemType.Markdown,
-						version: run.version,
-						page: {
-							title: run.sectionB.sectionName,
-							file: path.posix.join(path.posix.sep, 'sectionB', 'readme'),
-							sections: run.sectionB.sectionFormat
-						}
-					};
-
-					// notebook5 is from source book
-					let notebookTreeItemFormat: BookTreeItemFormat = {
-						title: '',
-						contentPath: run.notebook5.contentPath,
-						root: run.sourceBook.rootBookFolderPath,
-						tableOfContents: {
-							sections: [
-								{
-									'title': 'Notebook 5',
-									'file': path.posix.join(path.posix.sep, 'notebook5')
-								}
-							]
-						},
-						isUntitled: undefined,
-						treeItemCollapsibleState: undefined,
-						type: BookTreeItemType.Notebook,
-						version: run.version,
-						page: {
-							'title': 'Notebook 5',
-							'file': path.posix.join(path.posix.sep, 'notebook5')
-						}
-					};
-
-					let duplicatedNbTreeItemFormat: BookTreeItemFormat = {
-						title: 'Duplicated Notebook',
-						contentPath: path.posix.join(duplicatedNotebookPath, 'notebook5.ipynb'),
-						root: duplicatedNotebookPath,
-						tableOfContents: {
-							sections: [
-								{
-									'title': 'Notebook 5',
-									'file': path.posix.join(path.posix.sep, 'notebook5')
-								}
-							]
-						},
-						isUntitled: undefined,
-						treeItemCollapsibleState: undefined,
-						type: BookTreeItemType.Notebook,
-						version: run.version,
-						page: {
-							'title': 'Notebook 5',
-							'file': path.posix.join(path.posix.sep, 'notebook5')
-						}
-					};
+					const sectionCTreeItemFormat = createBookTreeItemFormat(run.sectionC, run.targetBook.rootBookFolderPath, run.version);
+					const sectionATreeItemFormat = createBookTreeItemFormat(run.sectionA, run.sourceBook.rootBookFolderPath, run.version);
+					const sectionBTreeItemFormat = createBookTreeItemFormat(run.sectionB, run.sourceBook.rootBookFolderPath, run.version);
+					const notebookTreeItemFormat = createBookTreeItemFormat(run.notebook5, run.sourceBook.rootBookFolderPath, run.version);
+					const duplicatedNbTreeItemFormat = createBookTreeItemFormat(run.duplicatedNotebook, duplicatedNotebookPath, undefined);

 					targetBook = new BookTreeItem(targetBookTreeItemFormat, undefined);
 					sectionC = new BookTreeItem(sectionCTreeItemFormat, undefined);
@@ -443,12 +422,7 @@ describe('BookTocManagerTests', function () {
 					sectionA.sections = run.sectionA.sectionFormat;
 					sectionB.sections = run.sectionB.sectionFormat;
 					sectionC.sections = run.sectionC.sectionFormat;
-					notebook.sections = [
-						{
-							'title': 'Notebook 5',
-							'file': path.posix.join(path.posix.sep, 'notebook5')
-						}
-					];
+					notebook.sections = [run.notebook5.sectionFormat];
 					duplicatedNotebook.sections = notebook.sections;

 					await fs.promises.mkdir(run.targetBook.bookContentFolderPath, { recursive: true });
@@ -480,16 +454,13 @@ describe('BookTocManagerTests', function () {

 					const mockExtensionContext = new MockExtensionContext();

-					sourceBookModel = new BookModel(run.sourceBook.rootBookFolderPath, false, false, mockExtensionContext, undefined);
-					targetBookModel = new BookModel(run.targetBook.rootBookFolderPath, false, false, mockExtensionContext, undefined);
-					// create book model mock objects
-					sinon.stub(sourceBookModel, 'bookItems').value([sectionA]);
-					sinon.stub(targetBookModel, 'bookItems').value([targetBook]);
+					sourceBookModel = BookModelStub(run.sourceBook.rootBookFolderPath, sectionA, mockExtensionContext);
+					targetBookModel = BookModelStub(run.targetBook.rootBookFolderPath, targetBook, mockExtensionContext);
 				});


 				it('Add section to book', async () => {
-					bookTocManager = new BookTocManager(targetBookModel, sourceBookModel);
+					bookTocManager = new BookTocManager(sourceBookModel, targetBookModel);
 					await bookTocManager.updateBook(sectionA, targetBook, undefined);
 					const listFiles = await fs.promises.readdir(path.join(run.targetBook.bookContentFolderPath, 'sectionA'));
 					const listSourceFiles = await fs.promises.readdir(path.join(run.sourceBook.bookContentFolderPath));
@@ -498,7 +469,7 @@ describe('BookTocManagerTests', function () {
 				});

 				it('Add section to section', async () => {
-					bookTocManager = new BookTocManager(targetBookModel, sourceBookModel);
+					bookTocManager = new BookTocManager(sourceBookModel, targetBookModel);
 					await bookTocManager.updateBook(sectionB, sectionC, {
 						'title': 'Notebook 6',
 						'file': path.posix.join(path.posix.sep, 'sectionC', 'notebook6')
@@ -510,7 +481,7 @@ describe('BookTocManagerTests', function () {
 				});

 				it('Add notebook to book', async () => {
-					bookTocManager = new BookTocManager(targetBookModel);
+					bookTocManager = new BookTocManager(undefined, targetBookModel);
 					await bookTocManager.updateBook(notebook, targetBook);
 					const listFiles = await fs.promises.readdir(run.targetBook.bookContentFolderPath);
 					should(JSON.stringify(listFiles).includes('notebook5.ipynb')).be.true('Notebook 5 should be under the target book content folder');
@@ -526,7 +497,7 @@ describe('BookTocManagerTests', function () {
 					});
 					should(notebookInToc).be.true('Verify the notebook is in toc before removing');

-					bookTocManager = new BookTocManager();
+					bookTocManager = new BookTocManager(sourceBookModel);
 					await bookTocManager.removeNotebook(notebook);

 					const listFiles = await fs.promises.readdir(run.sourceBook.bookContentFolderPath);
@@ -542,7 +513,7 @@ describe('BookTocManagerTests', function () {
 				});

 				it('Add duplicated notebook to book', async () => {
-					bookTocManager = new BookTocManager(targetBookModel);
+					bookTocManager = new BookTocManager(undefined, targetBookModel);
 					await bookTocManager.updateBook(notebook, targetBook);
 					await bookTocManager.updateBook(duplicatedNotebook, targetBook);
 					const listFiles = await fs.promises.readdir(run.targetBook.bookContentFolderPath);
@@ -553,7 +524,7 @@ describe('BookTocManagerTests', function () {
 				it('Recovery method is called after error', async () => {
 					const mockExtensionContext = new MockExtensionContext();
 					const recoverySpy = sinon.spy(BookTocManager.prototype, 'recovery');
-					sinon.stub(BookTocManager.prototype, 'updateBook').throws(new Error('Unexpected error.'));
+					sinon.stub(BookTocManager.prototype, 'updateTOC').throws(new Error('Unexpected error.'));
 					const bookTreeViewProvider = new BookTreeViewProvider([], mockExtensionContext, false, 'bookTreeView', NavigationProviders.NotebooksNavigator);
 					const results: quickPickResults = {
 						book: targetBook,