remove irrelevant windows from Track::History

--last active windows that were minimized OR
changed screen must be removed from last active
window history

app/wm/tracker/lastactivewindow.cpp

@@ -284,23 +284,29 @@ void LastActiveWindow::windowChanged(const WindowId &wid)
 {
     if (m_winId == wid && !wid.isNull()) {
         setInformation(m_windowsTracker->infoFor(wid));
+    } else if (m_history.contains(wid)) {
+        //! remove from history minimized windows or windows that changed screen
+        //! and update information accordingly with the first window found from
+        //! history after the removal
+        WindowInfoWrap winfo = m_windowsTracker->infoFor(wid);
+        if (winfo.isMinimized() || !m_trackedInfo->isTracking(winfo)) {
+            m_history.removeAll(wid);
+
+            if (m_history.count() > 0) {
+                setInformation(m_windowsTracker->infoFor(m_history[0]));
+            }
+        }
     }
 }
 
 void LastActiveWindow::windowRemoved(const WindowId &wid)
 {
-    bool wasFirst{false};
-
     if (m_history.contains(wid)) {
-        if (m_history[0] == wid) {
-            wasFirst = true;
-        }
-
         m_history.removeAll(wid);
-    }
 
-    if (wasFirst && !m_history.isEmpty()) {
-        setInformation(m_windowsTracker->infoFor(m_history[0]));
+        if (m_history.count() > 0) {
+            setInformation(m_windowsTracker->infoFor(m_history[0]));
+        }
     }
 }
 

app/wm/tracker/trackedgeneralinfo.cpp

@@ -142,6 +142,15 @@ void TrackedGeneralInfo::setActiveWindow(const WindowId &wid)
     m_lastActiveWindow->setInformation(m_tracker->infoFor(wid));
 }
 
+bool TrackedGeneralInfo::isTracking(const WindowInfoWrap &winfo) const
+{
+    return (winfo.isValid()
+            && !winfo.isPlasmaDesktop()
+            && !winfo.isMinimized()
+            && winfo.isOnDesktop(m_wm->currentDesktop())
+            && winfo.isOnActivity(m_wm->currentActivity()));
+}
+
 }
 }
 }

app/wm/tracker/trackedgeneralinfo.h

@@ -76,6 +76,8 @@ public:
 
     void setActiveWindow(const WindowId &wid);
 
+    virtual bool isTracking(const WindowInfoWrap &winfo) const;
+
 signals:
     void lastActiveWindowChanged();
 

app/wm/tracker/trackedviewinfo.cpp

@@ -95,6 +95,12 @@ void TrackedViewInfo::setTouchingWindowScheme(SchemeColors *scheme)
     m_touchingWindowScheme = scheme;
 }
 
+bool TrackedViewInfo::isTracking(const WindowInfoWrap &winfo) const
+{
+    return TrackedGeneralInfo::isTracking(winfo)
+            && m_availableScreenGeometry.contains(winfo.geometry().center());
+}
+
 }
 }
 }

app/wm/tracker/trackedviewinfo.h

@@ -62,6 +62,8 @@ public:
     SchemeColors *touchingWindowScheme() const;
     void setTouchingWindowScheme(SchemeColors *scheme);
 
+    bool isTracking(const WindowInfoWrap &winfo) const override;
+
 private:
     bool m_activeWindowTouching;
     bool m_existsWindowTouching;