Watches for blame annotation changes

So that it can hide/restore the hover blame annotation if needed

src/blameActiveLineController.ts

@@ -40,6 +40,7 @@ export default class BlameActiveLineController extends Disposable {
 
         subscriptions.push(workspace.onDidChangeConfiguration(this._onConfigurationChanged, this));
         subscriptions.push(git.onDidRemoveCacheEntry(this._onRemoveCacheEntry, this));
+        subscriptions.push(annotationController.onDidToggleBlameAnnotations(this._onBlameAnnotationToggled, this));
 
         this._disposable = Disposable.from(...subscriptions);
     }
@@ -105,6 +106,10 @@ export default class BlameActiveLineController extends Disposable {
         this._onActiveTextEditorChanged(window.activeTextEditor);
     }
 
+    private _onBlameAnnotationToggled() {
+        this._onActiveTextEditorChanged(window.activeTextEditor);
+    }
+
     private _onRemoveCacheEntry() {
         this._blame = undefined;
         this._onActiveTextEditorChanged(window.activeTextEditor);

src/blameAnnotationController.ts

@@ -1,6 +1,6 @@
 'use strict';
 import { Functions } from './system';
-import { DecorationRenderOptions, Disposable, ExtensionContext, OverviewRulerLane, TextDocument, TextEditor, TextEditorDecorationType, TextEditorViewColumnChangeEvent, window, workspace } from 'vscode';
+import { DecorationRenderOptions, Disposable, Event, EventEmitter, ExtensionContext, OverviewRulerLane, TextDocument, TextEditor, TextEditorDecorationType, TextEditorViewColumnChangeEvent, window, workspace } from 'vscode';
 import { BlameAnnotationProvider } from './blameAnnotationProvider';
 import { TextDocumentComparer, TextEditorComparer } from './comparers';
 import { IBlameConfig } from './configuration';
@@ -21,6 +21,11 @@ export let highlightDecoration: TextEditorDecorationType;
 
 export default class BlameAnnotationController extends Disposable {
 
+    private _onDidToggleBlameAnnotationsEmitter = new EventEmitter<void>();
+    get onDidToggleBlameAnnotations(): Event<void> {
+        return this._onDidToggleBlameAnnotationsEmitter.event;
+    }
+
     private _annotationProviders: Map<number, BlameAnnotationProvider> = new Map();
     private _blameAnnotationsDisposable: Disposable;
     private _config: IBlameConfig;
@@ -138,6 +143,8 @@ export default class BlameAnnotationController extends Disposable {
             this._blameAnnotationsDisposable && this._blameAnnotationsDisposable.dispose();
             this._blameAnnotationsDisposable = undefined;
         }
+
+        this._onDidToggleBlameAnnotationsEmitter.fire();
     }
 
     async showBlameAnnotation(editor: TextEditor, shaOrLine?: string | number): Promise<boolean> {
@@ -170,7 +177,11 @@ export default class BlameAnnotationController extends Disposable {
         }
 
         this._annotationProviders.set(editor.viewColumn || -1, provider);
-        return provider.provideBlameAnnotation(shaOrLine);
+        if (await provider.provideBlameAnnotation(shaOrLine)) {
+            this._onDidToggleBlameAnnotationsEmitter.fire();
+            return true;
+        }
+        return false;
     }
 
     isAnnotating(editor: TextEditor): boolean {

src/gitProvider.ts

@@ -1,5 +1,5 @@
 'use strict';
-import { /*Functions,*/ Iterables, Objects } from './system';
+import { Iterables, Objects } from './system';
 import { Disposable, Event, EventEmitter, ExtensionContext, languages, Location, Position, Range, TextDocument, TextEditor, Uri, workspace } from 'vscode';
 import { CodeLensVisibility, IConfig } from './configuration';
 import { DocumentSchemes, WorkspaceState } from './constants';