fix #13945. support format on paste

src/vs/editor/common/commonCodeEditor.ts

@@ -53,6 +53,7 @@ export abstract class CommonCodeEditor extends EventEmitter implements editorCom
 	public readonly onDidDispose: Event<void> = fromEventEmitter<void>(this, editorCommon.EventType.Disposed);
 	public readonly onWillType: Event<string> = fromEventEmitter<string>(this, editorCommon.EventType.WillType);
 	public readonly onDidType: Event<string> = fromEventEmitter<string>(this, editorCommon.EventType.DidType);
+	public readonly onDidPaste: Event<Range> = fromEventEmitter<Range>(this, editorCommon.EventType.DidPaste);
 
 	protected domElement: IContextKeyServiceTarget;
 
@@ -588,6 +589,25 @@ export abstract class CommonCodeEditor extends EventEmitter implements editorCom
 			return;
 		}
 
+		if (handlerId === editorCommon.Handler.Paste) {
+			if (!this.cursor || typeof payload.text !== 'string' || payload.text.length === 0) {
+				// nothing to do
+				return;
+			}
+			const startPosition = this.cursor.getSelection().getStartPosition();
+			this.cursor.trigger(source, handlerId, payload);
+			const endPosition = this.cursor.getSelection().getStartPosition();
+			if (source === 'keyboard') {
+				this.emit(editorCommon.EventType.DidPaste, {
+					startLineNumber: startPosition.lineNumber,
+					startColumn: startPosition.column,
+					endLineNumber: endPosition.lineNumber,
+					endColumn: endPosition.column
+				});
+			}
+			return;
+		}
+
 		let candidate = this.getAction(handlerId);
 		if (candidate !== null) {
 			TPromise.as(candidate.run()).done(null, onUnexpectedError);

src/vs/editor/common/config/commonEditorConfig.ts

@@ -287,6 +287,7 @@ class InternalEditorOptionsHelper {
 			parameterHints: toBoolean(opts.parameterHints),
 			iconsInSuggestions: toBoolean(opts.iconsInSuggestions),
 			formatOnType: toBoolean(opts.formatOnType),
+			formatOnPaste: toBoolean(opts.formatOnPaste),
 			suggestOnTriggerCharacters: toBoolean(opts.suggestOnTriggerCharacters),
 			acceptSuggestionOnEnter: toBoolean(opts.acceptSuggestionOnEnter),
 			snippetSuggestions: opts.snippetSuggestions,
@@ -666,6 +667,11 @@ const editorConfiguration: IConfigurationNode = {
 			'default': DefaultConfig.editor.formatOnType,
 			'description': nls.localize('formatOnType', "Controls if the editor should automatically format the line after typing")
 		},
+		'editor.formatOnPaste': {
+			'type': 'boolean',
+			'default': DefaultConfig.editor.formatOnPaste,
+			'description': nls.localize('formatOnPaste', "Controls if the editor should automatically format the pasted content")
+		},
 		'editor.suggestOnTriggerCharacters': {
 			'type': 'boolean',
 			'default': DefaultConfig.editor.suggestOnTriggerCharacters,

src/vs/editor/common/config/defaultConfig.ts

@@ -83,6 +83,7 @@ class ConfigClass implements IConfiguration {
 			iconsInSuggestions: true,
 			autoClosingBrackets: true,
 			formatOnType: false,
+			formatOnPaste: false,
 			suggestOnTriggerCharacters: true,
 			acceptSuggestionOnEnter: true,
 			snippetSuggestions: 'bottom',

src/vs/editor/common/editorCommon.ts

@@ -393,6 +393,11 @@ export interface IEditorOptions {
 	 * Defaults to false.
 	 */
 	formatOnType?: boolean;
+	/**
+	 * Enable format on paste.
+	 * Defaults to false.
+	 */
+	formatOnPaste?: boolean;
 	/**
 	 * Enable the suggestion box to pop-up on trigger characters.
 	 * Defaults to true.
@@ -879,6 +884,7 @@ export class EditorContribOptions {
 	readonly parameterHints: boolean;
 	readonly iconsInSuggestions: boolean;
 	readonly formatOnType: boolean;
+	readonly formatOnPaste: boolean;
 	readonly suggestOnTriggerCharacters: boolean;
 	readonly acceptSuggestionOnEnter: boolean;
 	readonly snippetSuggestions: 'top' | 'bottom' | 'inline' | 'none';
@@ -903,6 +909,7 @@ export class EditorContribOptions {
 		parameterHints: boolean;
 		iconsInSuggestions: boolean;
 		formatOnType: boolean;
+		formatOnPaste: boolean;
 		suggestOnTriggerCharacters: boolean;
 		acceptSuggestionOnEnter: boolean;
 		snippetSuggestions: 'top' | 'bottom' | 'inline' | 'none';
@@ -923,6 +930,7 @@ export class EditorContribOptions {
 		this.parameterHints = Boolean(source.parameterHints);
 		this.iconsInSuggestions = Boolean(source.iconsInSuggestions);
 		this.formatOnType = Boolean(source.formatOnType);
+		this.formatOnPaste = Boolean(source.formatOnPaste);
 		this.suggestOnTriggerCharacters = Boolean(source.suggestOnTriggerCharacters);
 		this.acceptSuggestionOnEnter = Boolean(source.acceptSuggestionOnEnter);
 		this.snippetSuggestions = source.snippetSuggestions;
@@ -949,6 +957,7 @@ export class EditorContribOptions {
 			&& this.parameterHints === other.parameterHints
 			&& this.iconsInSuggestions === other.iconsInSuggestions
 			&& this.formatOnType === other.formatOnType
+			&& this.formatOnPaste === other.formatOnPaste
 			&& this.suggestOnTriggerCharacters === other.suggestOnTriggerCharacters
 			&& this.acceptSuggestionOnEnter === other.acceptSuggestionOnEnter
 			&& this.snippetSuggestions === other.snippetSuggestions
@@ -3800,6 +3809,13 @@ export interface ICommonCodeEditor extends IEditor {
 	 */
 	onDidType(listener: (text: string) => void): IDisposable;
 
+	/**
+	 * An event emitted when users paste text in the editor.
+	 * @event
+	 * @internal
+	 */
+	onDidPaste(listener: (range: Range) => void): IDisposable;
+
 	/**
 	 * Returns true if this editor or one of its widgets has keyboard focus.
 	 */
@@ -4098,6 +4114,8 @@ export var EventType = {
 	WillType: 'willType',
 	DidType: 'didType',
 
+	DidPaste: 'didPaste',
+
 	EditorLayout: 'editorLayout',
 
 	DiffUpdated: 'diffUpdated'

src/vs/editor/contrib/format/common/formatActions.ts

@@ -12,13 +12,14 @@ import { TPromise } from 'vs/base/common/winjs.base';
 import * as editorCommon from 'vs/editor/common/editorCommon';
 import { ContextKeyExpr } from 'vs/platform/contextkey/common/contextkey';
 import { editorAction, ServicesAccessor, EditorAction, commonEditorContribution } from 'vs/editor/common/editorCommonExtensions';
-import { OnTypeFormattingEditProviderRegistry } from 'vs/editor/common/modes';
+import { OnTypeFormattingEditProviderRegistry, DocumentRangeFormattingEditProviderRegistry } from 'vs/editor/common/modes';
 import { getOnTypeFormattingEdits, getDocumentFormattingEdits, getDocumentRangeFormattingEdits } from '../common/format';
 import { EditOperationsCommand } from './formatCommand';
 import { CommandsRegistry } from 'vs/platform/commands/common/commands';
 import { ICodeEditorService } from 'vs/editor/common/services/codeEditorService';
 import { IEditorWorkerService } from 'vs/editor/common/services/editorWorkerService';
 import { CharacterSet } from 'vs/editor/common/core/characterClassifier';
+import { Range } from 'vs/editor/common/core/range';
 
 import ModeContextKeys = editorCommon.ModeContextKeys;
 import EditorContextKeys = editorCommon.EditorContextKeys;
@@ -150,6 +151,87 @@ class FormatOnType implements editorCommon.IEditorContribution {
 	}
 }
 
+@commonEditorContribution
+class FormatOnPaste implements editorCommon.IEditorContribution {
+
+	private static ID = 'editor.contrib.formatOnPaste';
+
+	private editor: editorCommon.ICommonCodeEditor;
+	private workerService: IEditorWorkerService;
+	private callOnDispose: IDisposable[];
+	private callOnModel: IDisposable[];
+
+	constructor(editor: editorCommon.ICommonCodeEditor, @IEditorWorkerService workerService: IEditorWorkerService) {
+		this.editor = editor;
+		this.workerService = workerService;
+		this.callOnDispose = [];
+		this.callOnModel = [];
+
+		this.callOnDispose.push(editor.onDidChangeConfiguration(() => this.update()));
+		this.callOnDispose.push(editor.onDidChangeModel(() => this.update()));
+		this.callOnDispose.push(editor.onDidChangeModelLanguage(() => this.update()));
+		this.callOnDispose.push(DocumentRangeFormattingEditProviderRegistry.onDidChange(this.update, this));
+	}
+
+	private update(): void {
+
+		// clean up
+		this.callOnModel = dispose(this.callOnModel);
+
+		// we are disabled
+		if (!this.editor.getConfiguration().contribInfo.formatOnPaste) {
+			return;
+		}
+
+		// no model
+		if (!this.editor.getModel()) {
+			return;
+		}
+
+		var model = this.editor.getModel();
+
+		// no support
+		var [support] = OnTypeFormattingEditProviderRegistry.ordered(model);
+		if (!support || !support.autoFormatTriggerCharacters) {
+			return;
+		}
+
+		this.callOnModel.push(this.editor.onDidPaste((range: Range) => {
+			this.trigger(range);
+		}));
+	}
+
+	private trigger(range: Range): void {
+		if (this.editor.getSelections().length > 1) {
+			return;
+		}
+
+		const model = this.editor.getModel();
+		const { tabSize, insertSpaces } = model.getOptions();
+		const state = this.editor.captureState(editorCommon.CodeEditorStateFlag.Value, editorCommon.CodeEditorStateFlag.Position);
+
+		getDocumentRangeFormattingEdits(model, range, { tabSize, insertSpaces }).then(edits => {
+			return this.workerService.computeMoreMinimalEdits(model.uri, edits, []);
+		}).then(edits => {
+			if (!state.validate(this.editor) || isFalsyOrEmpty(edits)) {
+				return;
+			}
+			const command = new EditOperationsCommand(edits, this.editor.getSelection());
+			this.editor.executeCommand(this.getId(), command);
+			this.editor.focus();
+		});
+	}
+
+	public getId(): string {
+		return FormatOnPaste.ID;
+	}
+
+	public dispose(): void {
+		this.callOnDispose = dispose(this.callOnDispose);
+		this.callOnModel = dispose(this.callOnModel);
+	}
+}
+
 export abstract class AbstractFormatAction extends EditorAction {
 
 	public run(accessor: ServicesAccessor, editor: editorCommon.ICommonCodeEditor): TPromise<void> {

src/vs/monaco.d.ts

@@ -1303,6 +1303,11 @@ declare module monaco.editor {
          * Defaults to false.
          */
         formatOnType?: boolean;
+        /**
+         * Enable format on paste.
+         * Defaults to false.
+         */
+        formatOnPaste?: boolean;
         /**
          * Enable the suggestion box to pop-up on trigger characters.
          * Defaults to true.
@@ -1521,6 +1526,7 @@ declare module monaco.editor {
         readonly parameterHints: boolean;
         readonly iconsInSuggestions: boolean;
         readonly formatOnType: boolean;
+        readonly formatOnPaste: boolean;
         readonly suggestOnTriggerCharacters: boolean;
         readonly acceptSuggestionOnEnter: boolean;
         readonly snippetSuggestions: 'top' | 'bottom' | 'inline' | 'none';

src/vs/platform/telemetry/common/telemetryUtils.ts

@@ -169,6 +169,7 @@ const configurationValueWhitelist = [
 	'editor.detectIndentation',
 	'editor.formatOnType',
 	'editor.formatOnSave',
+	'editor.formatOnPaste',
 	'window.openFilesInNewWindow',
 	'javascript.validate.enable',
 	'editor.mouseWheelZoom',