🧹 Refactor classes that do not need a language client to not inherit from IFeature

src/features/CodeActions.ts

@@ -3,15 +3,12 @@
  *--------------------------------------------------------*/
 
 import vscode = require("vscode");
-import { LanguageClient } from "vscode-languageclient";
 import Window = vscode.window;
-import { IFeature } from "../feature";
 import { ILogger } from "../logging";
 
-export class CodeActionsFeature implements IFeature {
+export class CodeActionsFeature implements vscode.Disposable {
     private applyEditsCommand: vscode.Disposable;
     private showDocumentationCommand: vscode.Disposable;
-    private languageClient: LanguageClient;
 
     constructor(private log: ILogger) {
         this.applyEditsCommand = vscode.commands.registerCommand("PowerShell.ApplyCodeActionEdits", (edit: any) => {
@@ -37,10 +34,6 @@ export class CodeActionsFeature implements IFeature {
         this.showDocumentationCommand.dispose();
     }
 
-    public setLanguageClient(languageclient: LanguageClient) {
-        this.languageClient = languageclient;
-    }
-
     public showRuleDocumentation(ruleId: string) {
         const pssaDocBaseURL = "https://github.com/PowerShell/PSScriptAnalyzer/blob/master/RuleDocumentation";
 

src/features/Console.ts

@@ -5,9 +5,9 @@
 import vscode = require("vscode");
 import { LanguageClient, NotificationType, RequestType } from "vscode-languageclient";
 import { ICheckboxQuickPickItem, showCheckboxQuickPick } from "../controls/checkboxQuickPick";
-import { IFeature } from "../feature";
 import { Logger } from "../logging";
 import Settings = require("../settings");
+import { LanguageClientConsumer } from "../languageClientConsumer";
 
 export const EvaluateRequestType = new RequestType<IEvaluateRequestArguments, void, void, void>("evaluate");
 export const OutputNotificationType = new NotificationType<IOutputNotificationBody, void>("output");
@@ -197,19 +197,14 @@ function onInputEntered(responseText: string): IShowInputPromptResponseBody {
     }
 }
 
-export class ConsoleFeature implements IFeature {
+export class ConsoleFeature extends LanguageClientConsumer {
     private commands: vscode.Disposable[];
-    private languageClient: LanguageClient;
     private resolveStatusBarPromise: (value?: {} | PromiseLike<{}>) => void;
 
     constructor(private log: Logger) {
+        super();
         this.commands = [
             vscode.commands.registerCommand("PowerShell.RunSelection", async () => {
-                if (this.languageClient === undefined) {
-                    this.log.writeAndShowError(`<${ConsoleFeature.name}>: ` +
-                        "Unable to instantiate; language client undefined.");
-                    return;
-                }
 
                 if (vscode.window.activeTerminal &&
                     vscode.window.activeTerminal.name !== "PowerShell Integrated Console") {
@@ -257,7 +252,6 @@ export class ConsoleFeature implements IFeature {
 
     public setLanguageClient(languageClient: LanguageClient) {
         this.languageClient = languageClient;
-
         this.languageClient.onRequest(
             ShowChoicePromptRequestType,
             (promptDetails) => showChoicePrompt(promptDetails, this.languageClient));

src/features/CustomViews.ts

@@ -5,15 +5,15 @@
 import * as path from "path";
 import * as vscode from "vscode";
 import { LanguageClient, RequestType } from "vscode-languageclient";
-import { IFeature } from "../feature";
+import { LanguageClientConsumer } from "../languageClientConsumer";
 
-export class CustomViewsFeature implements IFeature {
+export class CustomViewsFeature extends LanguageClientConsumer {
 
     private commands: vscode.Disposable[] = [];
-    private languageClient: LanguageClient;
     private contentProvider: PowerShellContentProvider;
 
     constructor() {
+        super();
         this.contentProvider = new PowerShellContentProvider();
         this.commands.push(
             vscode.workspace.registerTextDocumentContentProvider(
@@ -65,8 +65,6 @@ export class CustomViewsFeature implements IFeature {
                     args.id,
                     args.appendedHtmlBodyContent);
             });
-
-        this.languageClient = languageClient;
     }
 }
 

src/features/DebugSession.ts

@@ -6,26 +6,28 @@ import vscode = require("vscode");
 import { CancellationToken, DebugConfiguration, DebugConfigurationProvider,
     ExtensionContext, WorkspaceFolder } from "vscode";
 import { LanguageClient, NotificationType, RequestType } from "vscode-languageclient";
-import { IFeature } from "../feature";
 import { getPlatformDetails, OperatingSystem } from "../platform";
 import { PowerShellProcess} from "../process";
 import { SessionManager, SessionStatus } from "../session";
 import Settings = require("../settings");
 import utils = require("../utils");
 import { NamedPipeDebugAdapter } from "../debugAdapter";
 import { Logger } from "../logging";
+import { LanguageClientConsumer } from "../languageClientConsumer";
 
 export const StartDebuggerNotificationType =
     new NotificationType<void, void>("powerShell/startDebugger");
 
-export class DebugSessionFeature implements IFeature, DebugConfigurationProvider, vscode.DebugAdapterDescriptorFactory {
+export class DebugSessionFeature extends LanguageClientConsumer
+    implements DebugConfigurationProvider, vscode.DebugAdapterDescriptorFactory {
 
     private sessionCount: number = 1;
     private command: vscode.Disposable;
     private tempDebugProcess: PowerShellProcess;
     private tempSessionDetails: utils.IEditorServicesSessionDetails;
 
     constructor(context: ExtensionContext, private sessionManager: SessionManager, private logger: Logger) {
+        super();
         // Register a debug configuration provider
         context.subscriptions.push(vscode.debug.registerDebugConfigurationProvider("PowerShell", this));
         context.subscriptions.push(vscode.debug.registerDebugAdapterDescriptorFactory("PowerShell", this))
@@ -325,10 +327,9 @@ export class DebugSessionFeature implements IFeature, DebugConfigurationProvider
     }
 }
 
-export class SpecifyScriptArgsFeature implements IFeature {
+export class SpecifyScriptArgsFeature implements vscode.Disposable {
 
     private command: vscode.Disposable;
-    private languageClient: LanguageClient;
     private context: vscode.ExtensionContext;
 
     constructor(context: vscode.ExtensionContext) {
@@ -340,10 +341,6 @@ export class SpecifyScriptArgsFeature implements IFeature {
             });
     }
 
-    public setLanguageClient(languageclient: LanguageClient) {
-        this.languageClient = languageclient;
-    }
-
     public dispose() {
         this.command.dispose();
     }
@@ -391,14 +388,14 @@ interface IGetPSHostProcessesResponseBody {
     hostProcesses: IPSHostProcessInfo[];
 }
 
-export class PickPSHostProcessFeature implements IFeature {
+export class PickPSHostProcessFeature extends LanguageClientConsumer {
 
     private command: vscode.Disposable;
-    private languageClient: LanguageClient;
     private waitingForClientToken: vscode.CancellationTokenSource;
     private getLanguageClientResolve: (value?: LanguageClient | Thenable<LanguageClient>) => void;
 
     constructor() {
+        super();
 
         this.command =
             vscode.commands.registerCommand("PowerShell.PickPSHostProcess", () => {
@@ -522,14 +519,14 @@ interface IRunspace {
 export const GetRunspaceRequestType =
     new RequestType<any, IRunspace[], string, void>("powerShell/getRunspace");
 
-export class PickRunspaceFeature implements IFeature {
+export class PickRunspaceFeature extends LanguageClientConsumer {
 
     private command: vscode.Disposable;
-    private languageClient: LanguageClient;
     private waitingForClientToken: vscode.CancellationTokenSource;
     private getLanguageClientResolve: (value?: LanguageClient | Thenable<LanguageClient>) => void;
 
     constructor() {
+        super();
         this.command =
             vscode.commands.registerCommand("PowerShell.PickRunspace", (processId) => {
                 return this.getLanguageClient()

src/features/Examples.ts

@@ -4,10 +4,8 @@
 
 import path = require("path");
 import vscode = require("vscode");
-import { LanguageClient } from "vscode-languageclient";
-import { IFeature } from "../feature";
 
-export class ExamplesFeature implements IFeature {
+export class ExamplesFeature implements vscode.Disposable {
     private command: vscode.Disposable;
     private examplesPath: string;
 
@@ -21,10 +19,6 @@ export class ExamplesFeature implements IFeature {
         });
     }
 
-    public setLanguageClient(languageclient: LanguageClient) {
-        // Eliminate tslint warning
-    }
-
     public dispose() {
         this.command.dispose();
     }

src/features/ExpandAlias.ts

@@ -4,23 +4,18 @@
 
 import vscode = require("vscode");
 import Window = vscode.window;
-import { LanguageClient, NotificationType, RequestType } from "vscode-languageclient";
-import { IFeature } from "../feature";
+import { RequestType } from "vscode-languageclient";
 import { Logger } from "../logging";
+import { LanguageClientConsumer } from "../languageClientConsumer";
 
 export const ExpandAliasRequestType = new RequestType<any, any, void, void>("powerShell/expandAlias");
 
-export class ExpandAliasFeature implements IFeature {
+export class ExpandAliasFeature extends LanguageClientConsumer {
     private command: vscode.Disposable;
-    private languageClient: LanguageClient;
 
     constructor(private log: Logger) {
+        super();
         this.command = vscode.commands.registerCommand("PowerShell.ExpandAlias", () => {
-            if (this.languageClient === undefined) {
-                this.log.writeAndShowError(`<${ExpandAliasFeature.name}>: ` +
-                    "Unable to instantiate; language client undefined.");
-                return;
-            }
 
             const editor = Window.activeTextEditor;
             const document = editor.document;
@@ -50,8 +45,4 @@ export class ExpandAliasFeature implements IFeature {
     public dispose() {
         this.command.dispose();
     }
-
-    public setLanguageClient(languageclient: LanguageClient) {
-        this.languageClient = languageclient;
-    }
 }

src/features/ExtensionCommands.ts

@@ -8,9 +8,9 @@ import * as path from "path";
 import * as vscode from "vscode";
 import { LanguageClient, NotificationType, NotificationType0,
     Position, Range, RequestType } from "vscode-languageclient";
-import { IFeature } from "../feature";
 import { Logger } from "../logging";
 import Settings = require("../settings");
+import { LanguageClientConsumer } from "../languageClientConsumer";
 
 export interface IExtensionCommand {
     name: string;
@@ -173,20 +173,15 @@ interface IInvokeRegisteredEditorCommandParameter {
     commandName: string;
 }
 
-export class ExtensionCommandsFeature implements IFeature {
+export class ExtensionCommandsFeature extends LanguageClientConsumer {
 
     private command: vscode.Disposable;
     private command2: vscode.Disposable;
-    private languageClient: LanguageClient;
     private extensionCommands: IExtensionCommand[] = [];
 
     constructor(private log: Logger) {
+        super();
         this.command = vscode.commands.registerCommand("PowerShell.ShowAdditionalCommands", () => {
-            if (this.languageClient === undefined) {
-                this.log.writeAndShowError(`<${ExtensionCommandsFeature.name}>: ` +
-                    "Unable to instantiate; language client undefined.");
-                return;
-            }
 
             const editor = vscode.window.activeTextEditor;
             let start = editor.selection.start;

src/features/ExternalApi.ts

@@ -4,7 +4,7 @@
 import * as vscode from "vscode";
 import { v4 as uuidv4 } from 'uuid';
 import { LanguageClient } from "vscode-languageclient";
-import { IFeature } from "../feature";
+import { LanguageClientConsumer } from "../languageClientConsumer";
 import { Logger } from "../logging";
 import { SessionManager } from "../session";
 
@@ -15,12 +15,12 @@ export interface IExternalPowerShellDetails {
     architecture: string;
 }
 
-export class ExternalApiFeature implements IFeature {
+export class ExternalApiFeature extends LanguageClientConsumer {
     private commands: vscode.Disposable[];
-    private languageClient: LanguageClient;
     private static readonly registeredExternalExtension: Map<string, IExternalExtension> = new Map<string, IExternalExtension>();
 
     constructor(private sessionManager: SessionManager, private log: Logger) {
+        super();
         this.commands = [
             /*
             DESCRIPTION:
@@ -141,10 +141,6 @@ export class ExternalApiFeature implements IFeature {
             command.dispose();
         }
     }
-
-    public setLanguageClient(languageclient: LanguageClient) {
-        this.languageClient = languageclient;
-    }
 }
 
 interface IExternalExtension {

src/features/FindModule.ts

@@ -3,24 +3,23 @@
  *--------------------------------------------------------*/
 
 import vscode = require("vscode");
-import { LanguageClient, NotificationType, RequestType } from "vscode-languageclient";
-import Window = vscode.window;
-import { IFeature } from "../feature";
+import { RequestType } from "vscode-languageclient";
 import QuickPickItem = vscode.QuickPickItem;
+import { LanguageClientConsumer } from "../languageClientConsumer";
 
 export const FindModuleRequestType =
     new RequestType<any, any, void, void>("powerShell/findModule");
 
 export const InstallModuleRequestType =
     new RequestType<string, void, void, void>("powerShell/installModule");
 
-export class FindModuleFeature implements IFeature {
+export class FindModuleFeature extends LanguageClientConsumer {
 
     private command: vscode.Disposable;
-    private languageClient: LanguageClient;
     private cancelFindToken: vscode.CancellationTokenSource;
 
     constructor() {
+        super();
         this.command = vscode.commands.registerCommand("PowerShell.PowerShellFindModule", () => {
             // It takes a while to get the list of PowerShell modules, display some UI to let user know
             this.cancelFindToken = new vscode.CancellationTokenSource();
@@ -53,10 +52,6 @@ export class FindModuleFeature implements IFeature {
         });
     }
 
-    public setLanguageClient(languageclient: LanguageClient) {
-        this.languageClient = languageclient;
-    }
-
     public dispose() {
         this.command.dispose();
     }

src/features/GenerateBugReport.ts

@@ -4,7 +4,6 @@
 
 import os = require("os");
 import vscode = require("vscode");
-import { IFeature, LanguageClient } from "../feature";
 import { SessionManager } from "../session";
 import Settings = require("../settings");
 
@@ -26,7 +25,7 @@ const extensions =
             return 0;
         });
 
-export class GenerateBugReportFeature implements IFeature {
+export class GenerateBugReportFeature implements vscode.Disposable {
 
     private command: vscode.Disposable;
 
@@ -81,10 +80,6 @@ ${this.generateExtensionTable(extensions)}
         this.command.dispose();
     }
 
-    public setLanguageClient(languageclient: LanguageClient) {
-        // Eliminate tslint warning.
-    }
-
     private generateExtensionTable(installedExtensions): string {
         if (!installedExtensions.length) {
             return "none";