hide Tasks config if plasmoid not present

app/dockview.cpp

@@ -458,6 +458,19 @@ void DockView::setOffset(int offset)
     emit offsetChanged();
 }
 
+bool DockView::tasksPresent()
+{
+    foreach (Plasma::Applet *applet, containment()->applets()) {
+        KPluginMetaData meta = applet->pluginMetaData();
+
+        if (meta.pluginId() == "org.kde.latte.plasmoid") {
+            return true;
+        }
+    }
+
+    return false;
+}
+
 void DockView::updateOffset()
 {
     if (!containment())

app/dockview.h

@@ -94,6 +94,8 @@ public:
     
     bool compositing() const;
     int currentThickness() const;
+
+    bool tasksPresent() const;
     
     void adaptToScreen(QScreen *screen);
     
@@ -109,6 +111,7 @@ public slots:
     Q_INVOKABLE void initialize();
     Q_INVOKABLE void removeDock();
     Q_INVOKABLE void setLocalDockGeometry(const QRect &geometry);
+    Q_INVOKABLE bool tasksPresent();
     void resizeWindow();
     void restoreConfig();
     void saveConfig();

shell/contents/configuration/LatteDockConfiguration.qml.cmake

@@ -88,6 +88,8 @@ PlasmaCore.FrameSvgItem {
             PlasmaComponents.TabButton{
                 text: i18n("Tasks")
                 tab: tasksPage
+
+                visible: dock.tasksPresent();
             }
         }