[wpilib] LiveWindow: Add enableAllTelemetry() (#4480)

wpilibc/src/main/native/cpp/livewindow/LiveWindow.cpp

@@ -114,6 +114,18 @@ void LiveWindow::DisableAllTelemetry() {
   });
 }
 
+void LiveWindow::EnableAllTelemetry() {
+  auto& inst = ::GetInstance();
+  std::scoped_lock lock(inst.mutex);
+  inst.telemetryEnabled = true;
+  wpi::SendableRegistry::ForeachLiveWindow(inst.dataHandle, [&](auto& cbdata) {
+    if (!cbdata.data) {
+      cbdata.data = std::make_shared<Component>();
+    }
+    std::static_pointer_cast<Component>(cbdata.data)->telemetryEnabled = true;
+  });
+}
+
 bool LiveWindow::IsEnabled() {
   auto& inst = ::GetInstance();
   std::scoped_lock lock(inst.mutex);

wpilibc/src/main/native/include/frc/livewindow/LiveWindow.h

@@ -51,6 +51,11 @@ class LiveWindow final {
    */
   static void DisableAllTelemetry();
 
+  /**
+   * Enable ALL telemetry.
+   */
+  static void EnableAllTelemetry();
+
   static bool IsEnabled();
 
   /**

wpilibj/src/main/java/edu/wpi/first/wpilibj/livewindow/LiveWindow.java

@@ -150,6 +150,19 @@ public final class LiveWindow {
         });
   }
 
+  /** Enable ALL telemetry. */
+  public static synchronized void enableAllTelemetry() {
+    telemetryEnabled = true;
+    SendableRegistry.foreachLiveWindow(
+        dataHandle,
+        cbdata -> {
+          if (cbdata.data == null) {
+            cbdata.data = new Component();
+          }
+          ((Component) cbdata.data).m_telemetryEnabled = true;
+        });
+  }
+
   /**
    * Tell all the sensors to update (send) their values.
    *