experiment in delaying the panel creation

src/scriptengines/qml/plasmoid/appletinterface.cpp

@@ -732,7 +732,7 @@ void AppletInterface::itemChange(ItemChange change, const ItemChangeData &value)
 {
     if (change == QQuickItem::ItemSceneChange) {
         //we have a window: create the 
-        if (value.window && !m_qmlObject->rootObject() && !m_creationTimer->isActive()) {
+        if (value.window && !m_qmlObject->rootObject() /*&& !m_creationTimer->isActive()*/) {
             init();
 
             /*Experiment on even more delayed, doesn't seem to be good

src/scriptengines/qml/plasmoid/appletinterface.h

@@ -213,6 +213,7 @@ private:
     Plasma::Types::BackgroundHints m_backgroundHints;
     bool m_busy : 1;
     bool m_expanded : 1;
+    friend class ContainmentInterface;
 };
 
 #endif

src/scriptengines/qml/plasmoid/containmentinterface.cpp

@@ -67,6 +67,17 @@ void ContainmentInterface::init()
          connect(containment()->corona(), &Plasma::Corona::availableScreenRegionChanged,
                  this, &ContainmentInterface::availableScreenRegionChanged);
      }
+
+     //HACK, why appletAddedForward doesn't get called?
+     foreach (Plasma::Applet *applet, containment()->applets()) {
+         appletAddedForward(applet);
+     }
+     foreach (QObject *appletObj, m_appletInterfaces) {
+         AppletInterface *applet = qobject_cast<AppletInterface *>(appletObj);
+         if (!applet->qmlObject()) {
+             applet->init();
+         }
+     }
 }
 
 QList <QObject *> ContainmentInterface::applets()

src/shell/desktopcorona.cpp

@@ -50,6 +50,11 @@ DesktopCorona::DesktopCorona(QObject *parent)
     connect(m_appConfigSyncTimer, &QTimer::timeout,
             this, &DesktopCorona::syncAppConfig);
 
+    m_waitingPanelsTimer = new QTimer(this);
+    m_waitingPanelsTimer->setSingleShot(true);
+    connect(m_waitingPanelsTimer, &QTimer::timeout,
+            this, &DesktopCorona::createWaitingPanels);
+
 
     connect(m_desktopWidget, SIGNAL(resized(int)),
             this, SLOT(screenResized(int)));
@@ -252,6 +257,16 @@ void DesktopCorona::checkViews()
     }
 }
 
+void DesktopCorona::createWaitingPanels()
+{
+    foreach (Plasma::Containment *cont, m_waitingPanels) {
+        m_panelViews[cont] = new PanelView(this);
+        m_panelViews[cont]->setContainment(cont);
+        m_panelViews[cont]->show();
+    }
+    m_waitingPanels.clear();
+}
+
 void DesktopCorona::updateScreenOwner(int wasScreen, int isScreen, Plasma::Containment *containment)
 {
     qDebug() << "Was screen" << wasScreen << "Is screen" << isScreen <<"Containment" << containment << containment->title();
@@ -260,9 +275,8 @@ void DesktopCorona::updateScreenOwner(int wasScreen, int isScreen, Plasma::Conta
         containment->formFactor() == Plasma::Types::Vertical) {
 
         if (isScreen >= 0) {
-            m_panelViews[containment] = new PanelView(this);
-            m_panelViews[containment]->setContainment(containment);
-            m_panelViews[containment]->show();
+            m_waitingPanels << containment;
+            m_waitingPanelsTimer->start(250);
         } else {
             if (m_panelViews.contains(containment)) {
                 m_panelViews[containment]->setContainment(0);
@@ -274,6 +288,9 @@ void DesktopCorona::updateScreenOwner(int wasScreen, int isScreen, Plasma::Conta
     //Desktop view
     } else {
     
+        if (m_waitingPanelsTimer->isActive()) {
+            m_waitingPanelsTimer->start(250);
+        }
         if (isScreen < 0 || m_views.count() < isScreen + 1) {
             qWarning() << "Invalid screen";
             return;

src/shell/desktopcorona.h

@@ -99,14 +99,17 @@ private Q_SLOTS:
     void handleContainmentAdded(Plasma::Containment *c);
     void showWidgetExplorer();
     void syncAppConfig();
+    void createWaitingPanels();
 
 private:
     QDesktopWidget *m_desktopWidget;
     QList <View *> m_views;
     WidgetExplorerView *m_widgetExplorerView;
+    QList<Plasma::Containment *> m_waitingPanels;
     QHash<Plasma::Containment *, PanelView *> m_panelViews;
     KConfigGroup m_desktopDefaultsConfig;
     QTimer *m_appConfigSyncTimer;
+    QTimer *m_waitingPanelsTimer;
 };
 
 #endif