Debugger: Fix display of location marker when switching perspectives

Fixes: QTCREATORBUG-21362
Change-Id: I9bc1f0931ea902d04ab256774347b63c1fc64262
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/debugger/debuggerengine.cpp

@@ -1070,9 +1070,11 @@ void DebuggerEngine::gotoLocation(const Location &loc)
 
 void DebuggerEngine::gotoCurrentLocation()
 {
-    int top = stackHandler()->currentIndex();
+    if (d->m_state == InferiorStopOk || d->m_state == InferiorUnrunnable) {
-    if (top >= 0)
+        int top = stackHandler()->currentIndex();
-        gotoLocation(stackHandler()->currentFrame());
+        if (top >= 0)
+            gotoLocation(stackHandler()->currentFrame());
+    }
 }
 
 const DebuggerRunParameters &DebuggerEngine::runParameters() const
@@ -1110,6 +1112,17 @@ void DebuggerEngine::abortDebugger()
     }
 }
 
+void DebuggerEngine::updateUi(bool isCurrentEngine)
+{
+    updateState(false);
+    if (isCurrentEngine) {
+        gotoCurrentLocation();
+    } else {
+        d->m_locationMark.reset();
+        d->m_disassemblerAgent.resetLocation();
+    }
+}
+
 static bool isAllowedTransition(DebuggerState from, DebuggerState to)
 {
     switch (from) {

src/plugins/debugger/debuggerengine.h

@@ -366,6 +366,7 @@ public:
     void gotoCurrentLocation();
     virtual void quitDebugger(); // called when pressing the stop button
     void abortDebugger();
+    void updateUi(bool isCurrentEngine);
 
     bool isPrimaryEngine() const;
 

src/plugins/debugger/enginemanager.cpp

@@ -337,7 +337,6 @@ void EngineManagerPrivate::activateEngineItem(EngineItem *engineItem)
         if (DebuggerEngine *engine = m_currentItem->m_engine) {
             newContext.add(engine->languageContext());
             newContext.add(engine->debuggerContext());
-            engine->gotoCurrentLocation();
         } else {
             newContext.add(Context(Constants::C_DEBUGGER_NOTRUNNING));
         }
@@ -355,10 +354,8 @@ void EngineManagerPrivate::selectUiForCurrentEngine()
     Perspective *perspective = nullptr;
     int row = 0;
 
-    if (m_currentItem && m_currentItem->m_engine) {
+    if (m_currentItem && m_currentItem->m_engine)
         perspective = m_currentItem->m_engine->perspective();
-        m_currentItem->m_engine->updateState(false);
-    }
 
     if (m_currentItem)
         row = m_engineModel.rootItem()->indexOf(m_currentItem);
@@ -378,19 +375,14 @@ void EngineManagerPrivate::selectUiForCurrentEngine()
     QTC_ASSERT(perspective, return);
     perspective->select();
 
-    m_engineModel.rootItem()->forFirstLevelChildren([](EngineItem *engineItem) {
+    m_engineModel.rootItem()->forFirstLevelChildren([this](EngineItem *engineItem) {
         if (engineItem && engineItem->m_engine)
-            engineItem->m_engine->updateMarkers();
+            engineItem->m_engine->updateUi(engineItem == m_currentItem);
     });
 
     emit theEngineManager->currentEngineChanged();
 }
 
-void EngineManager::selectUiForCurrentEngine()
-{
-    d->selectUiForCurrentEngine();
-}
-
 EngineItem *EngineManagerPrivate::findEngineItem(DebuggerEngine *engine)
 {
     return m_engineModel.rootItem()->findFirstLevelChild([engine](EngineItem *engineItem) {

src/plugins/debugger/enginemanager.h

@@ -27,8 +27,6 @@
 
 #include <utils/treemodel.h>
 
-#include <QAbstractTableModel>
-#include <QComboBox>
 #include <QPointer>
 
 namespace Debugger {
@@ -56,8 +54,6 @@ public:
     static QList<QPointer<DebuggerEngine> > engines();
     static QPointer<DebuggerEngine> currentEngine();
 
-    static void selectUiForCurrentEngine();
-
     static QWidget *engineChooser();
 
 signals: