Use QuickPick to select source from list

It allows to select existing source file

Author: MrSantiaga

src/extension.ts

@@ -180,23 +180,16 @@ export async function activate(context: vscode.ExtensionContext) {
 
     registerArduinoCommand("arduino.setSketchFile", async () => {
         const sketchFileName = deviceContext.sketch;
-        const newSketchFileName = await vscode.window.showInputBox({
-            placeHolder: sketchFileName,
-            validateInput: (value) => {
-                if (value && /\.((ino)|(cpp)|c)$/.test(value.trim())) {
-                    return null;
-                } else {
-                    return "Invalid sketch file name. Should be *.ino/*.cpp/*.c";
-                }
-            },
-        });
+        let newSketchFileName = await vscode.window.showQuickPick(
+            getChildArduinoSources(undefined), 
+            {
+                canPickMany: false, placeHolder: sketchFileName
+            });
 
-        if (!newSketchFileName) {
-            return;
+        if (newSketchFileName || newSketchFileName !== sketchFileName) {
+            deviceContext.sketch = newSketchFileName;
+            deviceContext.showStatusBar();
         }
-
-        deviceContext.sketch = newSketchFileName;
-        deviceContext.showStatusBar();
     });
 
     registerArduinoCommand("arduino.uploadUsingProgrammer", async () => {