improve settings windows shown trigerring behavior

--when the user uses Meta+A to cycle between the Views
configuration windows then in such case when NO Config
window is shown the LAST ONE USED should be shown again.
IF a Config View is already shown then the NEXT should
be shown afterwards

app/layout/centrallayout.cpp

@@ -292,6 +292,16 @@ void CentralLayout::addView(Plasma::Containment *containment, bool forceOnPrimar
     }
 }
 
+bool CentralLayout::configViewIsShown() const
+{
+    bool genericShown = GenericLayout::configViewIsShown();
+    if (m_sharedLayout) {
+        return (m_sharedLayout->configViewIsShown() || genericShown);
+    }
+
+    return genericShown;
+}
+
 const QStringList CentralLayout::appliedActivities()
 {
     if (!m_corona) {

app/layout/centrallayout.h

@@ -67,8 +67,6 @@ public:
     QStringList activities() const;
     void setActivities(QStringList activities);
 
-    Latte::View *lastSettingsView();
-
     SharedLayout *sharedLayout() const;
     void setSharedLayout(SharedLayout *layout);
 
@@ -76,6 +74,7 @@ public:
     void addView(Plasma::Containment *containment, bool forceOnPrimary = false, int explicitScreen = -1, Layout::ViewsMap *occupied = nullptr);
     void syncLatteViewsToScreens(Layout::ViewsMap *occupiedMap = nullptr) override;
     void unloadContainments() override;
+    bool configViewIsShown() const override;
     const QStringList appliedActivities() override;
     Types::ViewType latteViewType(int containmentId) const override;
     QList<Latte::View *> latteViews() override;

app/layout/genericlayout.cpp

@@ -139,6 +139,17 @@ void GenericLayout::setBlockAutomaticLatteViewCreation(bool block)
     m_blockAutomaticLatteViewCreation = block;
 }
 
+bool GenericLayout::configViewIsShown() const
+{
+    for (const auto view : m_latteViews) {
+        if (view && view->settingsWindowIsShown()) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
 bool GenericLayout::isActive() const
 {
     if (!m_corona) {

app/layout/genericlayout.h

@@ -76,6 +76,8 @@ public:
     bool isWritable() const;
     bool layoutIsBroken() const;
 
+    virtual bool configViewIsShown() const;
+
     virtual int viewsCount(int screen) const;
     virtual int viewsCount(QScreen *screen) const;
     virtual int viewsCount() const;

app/shortcuts/globalshortcuts.cpp

@@ -732,7 +732,7 @@ void GlobalShortcuts::showSettings()
         }
 
         if (openSettings >= 0 && sortedViews.count() > 1) {
-            openSettings = openSettings + 1;
+            openSettings = currentLayout->configViewIsShown() ? openSettings + 1 : openSettings;
 
             if (openSettings >= sortedViews.size()) {
                 openSettings = 0;