adding TextDocument#isVisible and internals for a visbility change ev…

…ent, #15723

extensions/vscode-api-tests/src/workspace.test.ts

@@ -160,6 +160,18 @@ suite('workspace-namespace', () => {
 		});
 	});
 
+	test('openTextDocument, visible/invisible', function () {
+		return createRandomFile().then(file => {
+			return workspace.openTextDocument(file);
+		}).then(doc => {
+			assert.equal(doc.isVisible, false);
+			return window.showTextDocument(doc).then(editor => {
+				assert.ok(editor.document === doc);
+				assert.equal(doc.isVisible, true);
+			});
+		});
+	});
+
 	test('events: onDidOpenTextDocument, onDidChangeTextDocument, onDidSaveTextDocument', () => {
 		return createRandomFile().then(file => {
 			let disposables: Disposable[] = [];

src/vs/vscode.d.ts

@@ -112,7 +112,12 @@ declare module 'vscode' {
 		readonly version: number;
 
 		/**
-		 * true if there are unpersisted changes.
+		 * `true` if this document is showing in one or more [editors](#TextEditor).
+		 */
+		readonly isVisible: boolean;
+
+		/**
+		 * `true` if there are unpersisted changes.
 		 */
 		readonly isDirty: boolean;
 

src/vs/workbench/api/node/extHostDocumentData.ts

@@ -28,6 +28,7 @@ export class ExtHostDocumentData extends MirrorModel2 {
 	private _proxy: MainThreadDocumentsShape;
 	private _languageId: string;
 	private _isDirty: boolean;
+	private _isVisible: boolean = false;
 	private _document: vscode.TextDocument;
 	private _textLines: vscode.TextLine[] = [];
 	private _isDisposed: boolean = false;
@@ -48,6 +49,7 @@ export class ExtHostDocumentData extends MirrorModel2 {
 		ok(!this._isDisposed);
 		this._isDisposed = true;
 		this._isDirty = false;
+		this._isVisible = false;
 	}
 
 	equalLines({ lines }: ITextSource): boolean {
@@ -72,6 +74,7 @@ export class ExtHostDocumentData extends MirrorModel2 {
 				get isUntitled() { return data._uri.scheme !== 'file'; },
 				get languageId() { return data._languageId; },
 				get version() { return data._versionId; },
+				get isVisible() { return data._isVisible; },
 				get isDirty() { return data._isDirty; },
 				save() { return data._save(); },
 				getText(range?) { return range ? data._getTextInRange(range) : data.getText(); },
@@ -97,6 +100,16 @@ export class ExtHostDocumentData extends MirrorModel2 {
 		this._isDirty = isDirty;
 	}
 
+	_acceptIsVisible(value: boolean): boolean {
+		ok(!this._isDisposed);
+		if (this._isVisible === value) {
+			return false;
+		} else {
+			this._isVisible = value;
+			return true;
+		}
+	}
+
 	private _save(): TPromise<boolean> {
 		if (this._isDisposed) {
 			return TPromise.wrapError<boolean>('Document has been closed');

src/vs/workbench/api/node/extHostDocumentsAndEditors.ts

@@ -23,11 +23,13 @@ export class ExtHostDocumentsAndEditors extends ExtHostDocumentsAndEditorsShape
 	private readonly _onDidRemoveDocuments = new Emitter<ExtHostDocumentData[]>();
 	private readonly _onDidChangeVisibleTextEditors = new Emitter<ExtHostTextEditor[]>();
 	private readonly _onDidChangeActiveTextEditor = new Emitter<ExtHostTextEditor>();
+	private readonly _onDidChangeVisibleDocuments = new Emitter<ExtHostDocumentData[]>();
 
 	readonly onDidAddDocuments: Event<ExtHostDocumentData[]> = this._onDidAddDocuments.event;
 	readonly onDidRemoveDocuments: Event<ExtHostDocumentData[]> = this._onDidRemoveDocuments.event;
 	readonly onDidChangeVisibleTextEditors: Event<ExtHostTextEditor[]> = this._onDidChangeVisibleTextEditors.event;
 	readonly onDidChangeActiveTextEditor: Event<ExtHostTextEditor> = this._onDidChangeActiveTextEditor.event;
+	readonly onDidChangeVisibleTextDocuments: Event<ExtHostDocumentData[]> = this._onDidChangeVisibleDocuments.event;
 
 	constructor(
 		@IThreadService private _threadService: IThreadService
@@ -40,6 +42,21 @@ export class ExtHostDocumentsAndEditors extends ExtHostDocumentsAndEditorsShape
 		const removedDocuments: ExtHostDocumentData[] = [];
 		const addedDocuments: ExtHostDocumentData[] = [];
 		const removedEditors: ExtHostTextEditor[] = [];
+		const visibilityChangedDocuments = new Set<ExtHostDocumentData>();
+
+		if (delta.removedEditors) {
+			for (const id of delta.removedEditors) {
+				const editor = this._editors.get(id);
+				this._editors.delete(id);
+				removedEditors.push(editor);
+
+				const uri = editor.document.uri.toString();
+				const data = this._documents.get(uri);
+				if (data._acceptIsVisible(false)) {
+					visibilityChangedDocuments.add(data);
+				}
+			}
+		}
 
 		if (delta.removedDocuments) {
 			for (const id of delta.removedDocuments) {
@@ -67,14 +84,6 @@ export class ExtHostDocumentsAndEditors extends ExtHostDocumentsAndEditorsShape
 			}
 		}
 
-		if (delta.removedEditors) {
-			for (const id of delta.removedEditors) {
-				const editor = this._editors.get(id);
-				this._editors.delete(id);
-				removedEditors.push(editor);
-			}
-		}
-
 		if (delta.addedEditors) {
 			for (const data of delta.addedEditors) {
 				assert.ok(this._documents.has(data.document.toString()), `document '${data.document}' does not exist`);
@@ -90,6 +99,9 @@ export class ExtHostDocumentsAndEditors extends ExtHostDocumentsAndEditorsShape
 					typeConverters.toViewColumn(data.editorPosition)
 				);
 				this._editors.set(data.id, editor);
+				if (documentData._acceptIsVisible(true)) {
+					visibilityChangedDocuments.add(documentData);
+				}
 			}
 		}
 
@@ -113,6 +125,12 @@ export class ExtHostDocumentsAndEditors extends ExtHostDocumentsAndEditorsShape
 			this._onDidChangeActiveTextEditor.fire(this.activeEditor());
 		}
 
+		if (visibilityChangedDocuments.size > 0) {
+			const documents: ExtHostDocumentData[] = [];
+			visibilityChangedDocuments.forEach(data => documents.push(data));
+			this._onDidChangeVisibleDocuments.fire(documents);
+		}
+
 		// now that the events are out, dispose removed documents and editors
 		dispose(removedDocuments);
 		dispose(removedEditors);

src/vs/workbench/test/node/api/extHostDocumentsAndEditors.test.ts

@@ -0,0 +1,145 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+'use strict';
+
+import * as assert from 'assert';
+import URI from 'vs/base/common/uri';
+import { ExtHostDocumentData } from 'vs/workbench/api/node/extHostDocumentData';
+import { ITextEditorAddData } from 'vs/workbench/api/node/extHost.protocol';
+import { ExtHostDocumentsAndEditors } from 'vs/workbench/api/node/extHostDocumentsAndEditors';
+import { OneGetThreadService } from './testThreadService';
+import { Model } from 'vs/editor/common/model/model';
+
+suite('ExtHostDocumentsAndEditors', () => {
+
+	function modelAddData(model: Model) {
+		return {
+			isDirty: false,
+			versionId: model.getVersionId(),
+			modeId: model.getLanguageIdentifier().language,
+			url: model.uri,
+			lines: model.getValue().split(model.getEOL()),
+			EOL: model.getEOL(),
+		};
+	}
+
+	function editorAddData(model: Model, id = model.id): ITextEditorAddData {
+		return {
+			id,
+			document: model.uri,
+			options: { tabSize: 4, insertSpaces: true, cursorStyle: 0, lineNumbers: 0 },
+			selections: [],
+			editorPosition: 1
+		};
+	}
+
+	let documentsAndEditors: ExtHostDocumentsAndEditors;
+
+	setup(() => {
+		documentsAndEditors = new ExtHostDocumentsAndEditors(OneGetThreadService(null));
+	});
+
+	test('onDidChangeVisibleTextDocuments, new document => no event', () => {
+
+		const model = Model.createFromString('foo', undefined, undefined, URI.parse('foo:bar'));
+
+		let docs: ExtHostDocumentData[] = [];
+		let sub = documentsAndEditors.onDidChangeVisibleTextDocuments(e => docs.push(null));
+
+		documentsAndEditors.$acceptDocumentsAndEditorsDelta({
+			addedDocuments: [modelAddData(model)]
+		});
+
+		assert.equal(docs.length, 0);
+		sub.dispose();
+	});
+
+	test('onDidChangeVisibleTextDocuments, new editor => event', () => {
+
+		const model = Model.createFromString('foo', undefined, undefined, URI.parse('foo:bar'));
+
+		let docs: ExtHostDocumentData[] = [];
+		let sub = documentsAndEditors.onDidChangeVisibleTextDocuments(e => docs.push(...e));
+
+		documentsAndEditors.$acceptDocumentsAndEditorsDelta({
+			addedDocuments: [modelAddData(model)]
+		});
+
+		assert.equal(docs.length, 0);
+
+		documentsAndEditors.$acceptDocumentsAndEditorsDelta({
+			addedEditors: [editorAddData(model)]
+		});
+
+		assert.equal(docs.length, 1);
+		assert.equal(docs[0].document.uri.toString(), model.uri.toString());
+
+		sub.dispose();
+	});
+
+	test('onDidChangeVisibleTextDocuments, removed editor => event', () => {
+
+		const model = Model.createFromString('foo', undefined, undefined, URI.parse('foo:bar'));
+
+		documentsAndEditors.$acceptDocumentsAndEditorsDelta({
+			addedDocuments: [modelAddData(model)],
+			addedEditors: [editorAddData(model)]
+		});
+
+		const all = documentsAndEditors.allDocuments();
+		assert.equal(1, all.length);
+		assert.equal(all[0].document.isVisible, true);
+
+		let docs: ExtHostDocumentData[] = [];
+		let sub = documentsAndEditors.onDidChangeVisibleTextDocuments(e => docs.push(...e));
+
+		documentsAndEditors.$acceptDocumentsAndEditorsDelta({
+			removedEditors: [model.id]
+		});
+
+		assert.equal(docs.length, 1);
+		assert.equal(docs[0].document.uri.toString(), model.uri.toString());
+		assert.equal(docs[0].document.isVisible, false);
+
+		sub.dispose();
+	});
+
+
+	test('onDidChangeVisibleTextDocuments, removed/added editor => event', () => {
+
+		const model1 = Model.createFromString('foo', undefined, undefined, URI.parse('foo:bar'));
+		const model2 = Model.createFromString('foo', undefined, undefined, URI.parse('foo:bar2'));
+
+		documentsAndEditors.$acceptDocumentsAndEditorsDelta({
+			addedDocuments: [modelAddData(model1)],
+			addedEditors: [editorAddData(model1, 'left')]
+		});
+
+		const all = documentsAndEditors.allDocuments();
+		assert.equal(1, all.length);
+		assert.equal(all[0].document.isVisible, true);
+
+		let docs: ExtHostDocumentData[] = [];
+		let sub = documentsAndEditors.onDidChangeVisibleTextDocuments(e => docs.push(...e));
+
+
+		// left gets a new editor and right get the document from left
+		documentsAndEditors.$acceptDocumentsAndEditorsDelta({
+			addedDocuments: [modelAddData(model2)],
+			addedEditors: [editorAddData(model2, 'newLeft'), editorAddData(model1, 'right')],
+			removedEditors: ['left']
+		});
+
+		assert.equal(docs.length, 2);
+
+		let [left, right] = docs;
+		assert.equal(left.document.isVisible, true);
+		assert.equal(right.document.isVisible, true);
+
+		sub.dispose();
+	});
+
+});