Initial VS Code 1.19 source merge (#571)

* Initial 1.19 xcopy

* Fix yarn build

* Fix numerous build breaks

* Next batch of build break fixes

* More build break fixes

* Runtime breaks

* Additional post merge fixes

* Fix windows setup file

* Fix test failures.

* Update license header blocks to refer to source eula

src/vs/editor/contrib/codelens/codelensController.ts

@@ -0,0 +1,307 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+'use strict';
+
+import { RunOnceScheduler, asWinJsPromise } from 'vs/base/common/async';
+import { onUnexpectedError } from 'vs/base/common/errors';
+import { IDisposable, dispose } from 'vs/base/common/lifecycle';
+import { TPromise } from 'vs/base/common/winjs.base';
+import { ICommandService } from 'vs/platform/commands/common/commands';
+import { IMessageService } from 'vs/platform/message/common/message';
+import * as editorCommon from 'vs/editor/common/editorCommon';
+import { CodeLensProviderRegistry, ICodeLensSymbol } from 'vs/editor/common/modes';
+import * as editorBrowser from 'vs/editor/browser/editorBrowser';
+import { registerEditorContribution } from 'vs/editor/browser/editorExtensions';
+import { ICodeLensData, getCodeLensData } from './codelens';
+import { IConfigurationChangedEvent } from 'vs/editor/common/config/editorOptions';
+import { CodeLens, CodeLensHelper } from 'vs/editor/contrib/codelens/codelensWidget';
+
+export class CodeLensContribution implements editorCommon.IEditorContribution {
+
+	private static ID: string = 'css.editor.codeLens';
+
+	private _isEnabled: boolean;
+
+	private _globalToDispose: IDisposable[];
+	private _localToDispose: IDisposable[];
+	private _lenses: CodeLens[];
+	private _currentFindCodeLensSymbolsPromise: TPromise<ICodeLensData[]>;
+	private _modelChangeCounter: number;
+	private _currentFindOccPromise: TPromise<any>;
+	private _detectVisibleLenses: RunOnceScheduler;
+
+	constructor(
+		private _editor: editorBrowser.ICodeEditor,
+		@ICommandService private _commandService: ICommandService,
+		@IMessageService private _messageService: IMessageService
+	) {
+		this._isEnabled = this._editor.getConfiguration().contribInfo.codeLens;
+
+		this._globalToDispose = [];
+		this._localToDispose = [];
+		this._lenses = [];
+		this._currentFindCodeLensSymbolsPromise = null;
+		this._modelChangeCounter = 0;
+
+		this._globalToDispose.push(this._editor.onDidChangeModel(() => this._onModelChange()));
+		this._globalToDispose.push(this._editor.onDidChangeModelLanguage(() => this._onModelChange()));
+		this._globalToDispose.push(this._editor.onDidChangeConfiguration((e: IConfigurationChangedEvent) => {
+			let prevIsEnabled = this._isEnabled;
+			this._isEnabled = this._editor.getConfiguration().contribInfo.codeLens;
+			if (prevIsEnabled !== this._isEnabled) {
+				this._onModelChange();
+			}
+		}));
+		this._globalToDispose.push(CodeLensProviderRegistry.onDidChange(this._onModelChange, this));
+		this._onModelChange();
+	}
+
+	dispose(): void {
+		this._localDispose();
+		this._globalToDispose = dispose(this._globalToDispose);
+	}
+
+	private _localDispose(): void {
+		if (this._currentFindCodeLensSymbolsPromise) {
+			this._currentFindCodeLensSymbolsPromise.cancel();
+			this._currentFindCodeLensSymbolsPromise = null;
+			this._modelChangeCounter++;
+		}
+		if (this._currentFindOccPromise) {
+			this._currentFindOccPromise.cancel();
+			this._currentFindOccPromise = null;
+		}
+		this._localToDispose = dispose(this._localToDispose);
+	}
+
+	getId(): string {
+		return CodeLensContribution.ID;
+	}
+
+	private _onModelChange(): void {
+
+		this._localDispose();
+
+		const model = this._editor.getModel();
+		if (!model) {
+			return;
+		}
+
+		if (!this._isEnabled) {
+			return;
+		}
+
+		if (!CodeLensProviderRegistry.has(model)) {
+			return;
+		}
+
+		for (const provider of CodeLensProviderRegistry.all(model)) {
+			if (typeof provider.onDidChange === 'function') {
+				let registration = provider.onDidChange(() => scheduler.schedule());
+				this._localToDispose.push(registration);
+			}
+		}
+
+		this._detectVisibleLenses = new RunOnceScheduler(() => {
+			this._onViewportChanged();
+		}, 500);
+
+		const scheduler = new RunOnceScheduler(() => {
+			const counterValue = ++this._modelChangeCounter;
+			if (this._currentFindCodeLensSymbolsPromise) {
+				this._currentFindCodeLensSymbolsPromise.cancel();
+			}
+
+			this._currentFindCodeLensSymbolsPromise = getCodeLensData(model);
+
+			this._currentFindCodeLensSymbolsPromise.then((result) => {
+				if (counterValue === this._modelChangeCounter) { // only the last one wins
+					this._renderCodeLensSymbols(result);
+					this._detectVisibleLenses.schedule();
+				}
+			}, onUnexpectedError);
+		}, 250);
+		this._localToDispose.push(scheduler);
+		this._localToDispose.push(this._detectVisibleLenses);
+		this._localToDispose.push(this._editor.onDidChangeModelContent((e) => {
+			this._editor.changeDecorations((changeAccessor) => {
+				this._editor.changeViewZones((viewAccessor) => {
+					const toDispose: CodeLens[] = [];
+					this._lenses.forEach((lens) => {
+						if (lens.isValid()) {
+							lens.update(viewAccessor);
+						} else {
+							toDispose.push(lens);
+						}
+					});
+
+					let helper = new CodeLensHelper();
+					toDispose.forEach((l) => {
+						l.dispose(helper, viewAccessor);
+						this._lenses.splice(this._lenses.indexOf(l), 1);
+					});
+					helper.commit(changeAccessor);
+				});
+			});
+
+			// Compute new `visible` code lenses
+			this._detectVisibleLenses.schedule();
+			// Ask for all references again
+			scheduler.schedule();
+		}));
+		this._localToDispose.push(this._editor.onDidScrollChange(e => {
+			if (e.scrollTopChanged && this._lenses.length > 0) {
+				this._detectVisibleLenses.schedule();
+			}
+		}));
+		this._localToDispose.push(this._editor.onDidLayoutChange(e => {
+			this._detectVisibleLenses.schedule();
+		}));
+		this._localToDispose.push({
+			dispose: () => {
+				if (this._editor.getModel()) {
+					this._editor.changeDecorations((changeAccessor) => {
+						this._editor.changeViewZones((accessor) => {
+							this._disposeAllLenses(changeAccessor, accessor);
+						});
+					});
+				} else {
+					// No accessors available
+					this._disposeAllLenses(null, null);
+				}
+			}
+		});
+
+		scheduler.schedule();
+	}
+
+	private _disposeAllLenses(decChangeAccessor: editorCommon.IModelDecorationsChangeAccessor, viewZoneChangeAccessor: editorBrowser.IViewZoneChangeAccessor): void {
+		let helper = new CodeLensHelper();
+		this._lenses.forEach((lens) => lens.dispose(helper, viewZoneChangeAccessor));
+		if (decChangeAccessor) {
+			helper.commit(decChangeAccessor);
+		}
+		this._lenses = [];
+	}
+
+	private _renderCodeLensSymbols(symbols: ICodeLensData[]): void {
+		if (!this._editor.getModel()) {
+			return;
+		}
+
+		let maxLineNumber = this._editor.getModel().getLineCount();
+		let groups: ICodeLensData[][] = [];
+		let lastGroup: ICodeLensData[];
+
+		for (let symbol of symbols) {
+			let line = symbol.symbol.range.startLineNumber;
+			if (line < 1 || line > maxLineNumber) {
+				// invalid code lens
+				continue;
+			} else if (lastGroup && lastGroup[lastGroup.length - 1].symbol.range.startLineNumber === line) {
+				// on same line as previous
+				lastGroup.push(symbol);
+			} else {
+				// on later line as previous
+				lastGroup = [symbol];
+				groups.push(lastGroup);
+			}
+		}
+
+		const centeredRange = this._editor.getCenteredRangeInViewport();
+		const shouldRestoreCenteredRange = centeredRange && (groups.length !== this._lenses.length && this._editor.getScrollTop() !== 0);
+		this._editor.changeDecorations((changeAccessor) => {
+			this._editor.changeViewZones((accessor) => {
+
+				let codeLensIndex = 0, groupsIndex = 0, helper = new CodeLensHelper();
+
+				while (groupsIndex < groups.length && codeLensIndex < this._lenses.length) {
+
+					let symbolsLineNumber = groups[groupsIndex][0].symbol.range.startLineNumber;
+					let codeLensLineNumber = this._lenses[codeLensIndex].getLineNumber();
+
+					if (codeLensLineNumber < symbolsLineNumber) {
+						this._lenses[codeLensIndex].dispose(helper, accessor);
+						this._lenses.splice(codeLensIndex, 1);
+					} else if (codeLensLineNumber === symbolsLineNumber) {
+						this._lenses[codeLensIndex].updateCodeLensSymbols(groups[groupsIndex], helper);
+						groupsIndex++;
+						codeLensIndex++;
+					} else {
+						this._lenses.splice(codeLensIndex, 0, new CodeLens(groups[groupsIndex], this._editor, helper, accessor, this._commandService, this._messageService, () => this._detectVisibleLenses.schedule()));
+						codeLensIndex++;
+						groupsIndex++;
+					}
+				}
+
+				// Delete extra code lenses
+				while (codeLensIndex < this._lenses.length) {
+					this._lenses[codeLensIndex].dispose(helper, accessor);
+					this._lenses.splice(codeLensIndex, 1);
+				}
+
+				// Create extra symbols
+				while (groupsIndex < groups.length) {
+					this._lenses.push(new CodeLens(groups[groupsIndex], this._editor, helper, accessor, this._commandService, this._messageService, () => this._detectVisibleLenses.schedule()));
+					groupsIndex++;
+				}
+
+				helper.commit(changeAccessor);
+			});
+		});
+		if (shouldRestoreCenteredRange) {
+			this._editor.revealRangeInCenter(centeredRange, editorCommon.ScrollType.Immediate);
+		}
+	}
+
+	private _onViewportChanged(): void {
+		if (this._currentFindOccPromise) {
+			this._currentFindOccPromise.cancel();
+			this._currentFindOccPromise = null;
+		}
+
+		const model = this._editor.getModel();
+		if (!model) {
+			return;
+		}
+
+		const toResolve: ICodeLensData[][] = [];
+		const lenses: CodeLens[] = [];
+		this._lenses.forEach((lens) => {
+			const request = lens.computeIfNecessary(model);
+			if (request) {
+				toResolve.push(request);
+				lenses.push(lens);
+			}
+		});
+
+		if (toResolve.length === 0) {
+			return;
+		}
+
+		const promises = toResolve.map((request, i) => {
+
+			const resolvedSymbols = new Array<ICodeLensSymbol>(request.length);
+			const promises = request.map((request, i) => {
+				return asWinJsPromise((token) => {
+					return request.provider.resolveCodeLens(model, request.symbol, token);
+				}).then(symbol => {
+					resolvedSymbols[i] = symbol;
+				});
+			});
+
+			return TPromise.join(promises).then(() => {
+				lenses[i].updateCommands(resolvedSymbols);
+			});
+		});
+
+		this._currentFindOccPromise = TPromise.join(promises).then(() => {
+			this._currentFindOccPromise = null;
+		});
+	}
+}
+
+registerEditorContribution(CodeLensContribution);