From 3f81d055af4a9392ef412befa20d6fade0bde918 Mon Sep 17 00:00:00 2001
From: Cameron Gutman <aicommander@gmail.com>
Date: Thu, 9 Aug 2018 18:48:40 -0700
Subject: [PATCH] Return to the PC grid if the selected PC goes offline or
 becomes unpaired

---
 app/gui/AppView.qml  | 10 ++++++++++
 app/gui/appmodel.cpp |  8 ++++++++
 app/gui/appmodel.h   |  3 +++
 3 files changed, 21 insertions(+)

diff --git a/app/gui/AppView.qml b/app/gui/AppView.qml
index f661a92b..8da1d0f5 100644
--- a/app/gui/AppView.qml
+++ b/app/gui/AppView.qml
@@ -28,14 +28,24 @@ GridView {
     // routine to run, but only if we start as invisible
     visible: false
 
+    function computerLost()
+    {
+        // Go back to the PC view on PC loss
+        stackView.pop()
+    }
+
     onVisibleChanged: {
         if (visible) {
             // Start polling when this view is shown
             ComputerManager.startPolling()
+
+            appModel.computerLost.connect(computerLost)
         }
         else {
             // Stop polling when this view is not on top
             ComputerManager.stopPollingAsync()
+
+            appModel.computerLost.disconnect(computerLost)
         }
     }
 
diff --git a/app/gui/appmodel.cpp b/app/gui/appmodel.cpp
index ba951b74..2c23185c 100644
--- a/app/gui/appmodel.cpp
+++ b/app/gui/appmodel.cpp
@@ -108,6 +108,14 @@ void AppModel::handleComputerStateChanged(NvComputer* computer)
         return;
     }
 
+    // If the computer has gone offline or we've been unpaired,
+    // signal the UI so we can go back to the PC view.
+    if (m_Computer->state == NvComputer::CS_OFFLINE ||
+            m_Computer->pairState == NvComputer::PS_NOT_PAIRED) {
+        emit computerLost();
+        return;
+    }
+
     // First, process additions/removals from the app list. This
     // is required because the new game may now be running, so
     // we can't check that first.
diff --git a/app/gui/appmodel.h b/app/gui/appmodel.h
index 07e94126..c00a5312 100644
--- a/app/gui/appmodel.h
+++ b/app/gui/appmodel.h
@@ -42,6 +42,9 @@ private slots:
 
     void handleBoxArtLoaded(NvComputer* computer, NvApp app, QUrl image);
 
+signals:
+    void computerLost();
+
 private:
     NvComputer* m_Computer;
     BoxArtManager m_BoxArtManager;