update indicators runtime

--fixes to signals in ViewParts in order to avoid
crashes. Currently the recreateView approach is used
in order to reload indicators runtime dynamically.
The "View::setSource" approach does not reload the
indicators properly

app/indicator/factory.cpp

@@ -128,6 +128,8 @@ void Factory::reload()
             for (const auto &pluginDir : pluginDirs) {
                 if (pluginDir != "." && pluginDir != "..") {
                     QString metadataFile = standard.absolutePath() + "/" + pluginDir + "/metadata.desktop";
+
+                    if(QFileInfo(metadataFile).exists()) {
                         KPluginMetaData metadata = KPluginMetaData::fromDesktopFile(metadataFile);
 
                         if (metadataAreValid(metadata)) {
@@ -162,6 +164,7 @@ void Factory::reload()
                 }
             }
         }
+    }
 
     emit customPluginsChanged();
 }

app/layout/genericlayout.cpp

@@ -919,25 +919,24 @@ QList<Plasma::Containment *> GenericLayout::unassignFromLayout(Latte::View *latt
     return containments;
 }
 
-void GenericLayout::recreateView(Plasma::Containment *containment)
+void GenericLayout::recreateView(Plasma::Containment *containment, bool delayed)
 {
-    if (!m_corona) {
+    if (!m_corona || m_viewsToRecreate.contains(containment) || !containment || !m_latteViews.contains(containment)) {
         return;
     }
 
-    if (!m_viewsToRecreate.contains(containment)) {
+    int delay = delayed ? 350 : 0;
     m_viewsToRecreate << containment;
 
     //! give the time to config window to close itself first and then recreate the dock
     //! step:1 remove the latteview
-        QTimer::singleShot(350, [this, containment]() {
-            auto view = m_latteViews.take(containment);
-
-            if (view) {
-                qDebug() << "recreate - step 1: removing dock for containment:" << containment->id();
+    QTimer::singleShot(delay, [this, containment]() {
+        auto view = m_latteViews[containment];
+        view->disconnectSensitiveSignals();
 
         //! step:2 add the new latteview
         connect(view, &QObject::destroyed, this, [this, containment]() {
+            auto view = m_latteViews.take(containment);
             QTimer::singleShot(250, this, [this, containment]() {
                 if (!m_latteViews.contains(containment)) {
                     qDebug() << "recreate - step 2: adding dock for containment:" << containment->id();
@@ -947,12 +946,9 @@ void GenericLayout::recreateView(Plasma::Containment *containment)
             });
         });
 
-                view->disconnectSensitiveSignals();
         view->deleteLater();
-            }
     });
 }
-}
 
 
 bool GenericLayout::latteViewExists(Plasma::Containment *containment)

app/layout/genericlayout.h

@@ -111,7 +111,7 @@ public:
     //! this function needs the layout to have first set the corona through initToCorona() function
     virtual void addView(Plasma::Containment *containment, bool forceOnPrimary = false, int explicitScreen = -1, Layout::ViewsMap *occupied = nullptr);
     void copyView(Plasma::Containment *containment);
-    void recreateView(Plasma::Containment *containment);
+    void recreateView(Plasma::Containment *containment, bool delayed = true);
     bool latteViewExists(Plasma::Containment *containment);
 
     //! Available edges for specific view in that screen

app/view/indicator/indicator.cpp

@@ -54,20 +54,14 @@ Indicator::Indicator(Latte::View *parent)
 
     connect(m_view, &Latte::View::latteTasksArePresentChanged, this, &Indicator::latteTasksArePresentChanged);
 
-    connect(m_corona->indicatorFactory(), &Latte::Indicator::Factory::customPluginsChanged, [this]() {
-        if (!m_corona->indicatorFactory()->pluginExists(m_type)) {
+    connect(m_view, &Latte::View::customPluginsChanged, [this]() {
+        if (m_corona && !m_corona->indicatorFactory()->pluginExists(m_type)) {
             setType("org.kde.latte.default");
         }
 
         emit customPluginsChanged();
     });
 
-    connect(m_corona->indicatorFactory(), &Latte::Indicator::Factory::pluginsUpdated, [this]() {
-        if (m_view && m_view->layout() && m_view->containment()) {
-        //    m_view->layout()->recreateView(m_view->containment());
-        }
-    });
-
     connect(this, &Indicator::pluginChanged, [this]() {
         if ((m_type != "org.kde.latte.default") && m_type != "org.kde.latte.plasma") {
             setCustomType(m_type);

app/view/settings/primaryconfigview.cpp

@@ -106,9 +106,7 @@ PrimaryConfigView::PrimaryConfigView(Plasma::Containment *containment, Latte::Vi
         m_thicknessSyncTimer.start();
     });
 
-    connections << connect(m_corona, &Latte::Corona::availableScreenRectChanged, this, [this]() {
-        updateAvailableScreenGeometry();
-    });
+    connections << connect(m_latteView, &Latte::View::availableScreenRectChangedForViewParts, this, &PrimaryConfigView::updateAvailableScreenGeometry);
 
     if (m_corona) {
         connections << connect(m_corona, &Latte::Corona::raiseViewsTemporaryChanged, this, &PrimaryConfigView::raiseDocksTemporaryChanged);
@@ -406,7 +404,8 @@ void PrimaryConfigView::focusOutEvent(QFocusEvent *ev)
 
     const auto *focusWindow = qGuiApp->focusWindow();
 
-    if ((focusWindow && (focusWindow->flags().testFlag(Qt::Popup)
+    if (!m_latteView
+            || (focusWindow && (focusWindow->flags().testFlag(Qt::Popup)
                                 || focusWindow->flags().testFlag(Qt::ToolTip)))
             || m_latteView->alternativesIsShown()) {
         return;

app/view/view.cpp

@@ -27,6 +27,7 @@
 #include "visibilitymanager.h"
 #include "settings/primaryconfigview.h"
 #include "settings/secondaryconfigview.h"
+#include "../indicator/factory.h"
 #include "../lattecorona.h"
 #include "../layout/genericlayout.h"
 #include "../layouts/manager.h"
@@ -238,6 +239,11 @@ void View::init()
 
     connect(m_contextMenu, &ViewPart::ContextMenu::menuChanged, this, &View::contextMenuIsShownChanged);
 
+    connect(m_corona->indicatorFactory(), &Latte::Indicator::Factory::pluginsUpdated, this, &View::reloadSource);
+    //! View sends this signal in order to avoid crashes from ViewPart::Indicator when the view is recreated
+    connect(m_corona->indicatorFactory(), &Latte::Indicator::Factory::customPluginsChanged, this, &View::customPluginsChanged);
+    connect(m_corona, &Latte::Corona::availableScreenRectChanged, this, &View::availableScreenRectChangedForViewParts);
+
     ///!!!!!
     rootContext()->setContextProperty(QStringLiteral("latteView"), this);
 
@@ -259,6 +265,19 @@ void View::init()
     qDebug() << "SOURCE:" << source();
 }
 
+void View::reloadSource()
+{
+    if (m_layout && containment()) {
+        if (settingsWindowIsShown()) {
+            m_configView->deleteLater();
+        }
+
+        engine()->clearComponentCache();
+        m_layout->recreateView(containment(), settingsWindowIsShown());
+    }
+}
+
+
 bool View::inDelete() const
 {
     return m_inDelete;

app/view/view.h

@@ -271,11 +271,16 @@ signals:
 
     void absoluteGeometryChanged(const QRect &geometry);
 
+    //! pass on signals to children in order to avoid crashes when View is recreated or destroyed
+    void availableScreenRectChangedForViewParts();
+    void customPluginsChanged();
+
 private slots:
     void availableScreenRectChangedFrom(View *origin);
     void configViewCreatedFor(Latte::View *view);
     void hideWindowsForSlidingOut();
     void preferredViewForShortcutsChangedSlot(Latte::View *view);
+    void reloadSource();
     void statusChanged(Plasma::Types::ItemStatus);
 
     void restoreConfig();