Add optional UI to prompt for script args.

Author: rkeithhill

package.json

@@ -30,7 +30,8 @@
     "onCommand:PowerShell.NewProjectFromTemplate",
     "onCommand:PowerShell.OpenExamplesFolder",
     "onCommand:PowerShell.StartDebugSession",
-    "onCommand:PowerShell.PickPSHostProcess"
+    "onCommand:PowerShell.PickPSHostProcess",
+    "onCommand:PowerShell.SpecifyScriptArgs"
   ],
   "dependencies": {
     "vscode-languageclient": "3.2.0"
@@ -175,7 +176,8 @@
         "program": "./out/debugAdapter.js",
         "runtime": "node",
         "variables": {
-          "PickPSHostProcess": "PowerShell.PickPSHostProcess"
+          "PickPSHostProcess": "PowerShell.PickPSHostProcess",
+          "SpecifyScriptArgs": "PowerShell.SpecifyScriptArgs"
         },
         "languages": [
           "powershell"

src/features/DebugSession.ts

@@ -106,6 +106,39 @@ export class DebugSessionFeature implements IFeature {
     }
 }
 
+export class SpecifyScriptArgsFeature implements IFeature {
+
+    private command: vscode.Disposable;
+    private languageClient: LanguageClient;
+
+    constructor() {
+
+        this.command =
+            vscode.commands.registerCommand('PowerShell.SpecifyScriptArgs', () => {
+                return this.specifyScriptArguments();
+            });
+    }
+
+    public setLanguageClient(languageclient: LanguageClient) {
+        this.languageClient = languageclient;
+    }
+
+    public dispose() {
+        this.command.dispose();
+    }
+
+    private specifyScriptArguments(): Thenable<string[]> {
+        let options: vscode.InputBoxOptions = {
+            ignoreFocusOut: true,
+            placeHolder: "Enter script arguments"
+        }
+
+        return vscode.window.showInputBox(options).then(text => {
+            return text !== undefined ? new Array(text) : text;
+        });
+    }
+}
+
 interface ProcessItem extends vscode.QuickPickItem {
 	pid: string;	// payload for the QuickPick UI
 }

src/main.ts

@@ -21,6 +21,7 @@ import { CodeActionsFeature } from './features/CodeActions';
 import { RemoteFilesFeature } from './features/RemoteFiles';
 import { DebugSessionFeature } from './features/DebugSession';
 import { PickPSHostProcessFeature } from './features/DebugSession';
+import { SpecifyScriptArgsFeature } from './features/DebugSession';
 import { SelectPSSARulesFeature } from './features/SelectPSSARules';
 import { FindModuleFeature } from './features/PowerShellFindModule';
 import { NewFileOrProjectFeature } from './features/NewFileOrProject';
@@ -113,7 +114,8 @@ export function activate(context: vscode.ExtensionContext): void {
         new DocumentFormatterFeature(),
         new RemoteFilesFeature(),
         new DebugSessionFeature(),
-        new PickPSHostProcessFeature()
+        new PickPSHostProcessFeature(),
+        new SpecifyScriptArgsFeature()
     ];
 
     sessionManager =