Some changes for feed models.

src/core/feedsmodel.cpp

@@ -58,12 +58,14 @@ FeedsModel::~FeedsModel() {
 }
 
 QVariant FeedsModel::data(const QModelIndex &index, int role) const {
-  if (!index.isValid()) {
+  FeedsModelRootItem *item = itemForIndex(index);
+
+  if (item != NULL) {
+    return item->data(index.column(), role);
+  }
+  else {
     return QVariant();
   }
-
-  FeedsModelRootItem *item = static_cast<FeedsModelRootItem*>(index.internalPointer());
-  return item->data(index.column(), role);
 }
 
 QVariant FeedsModel::headerData(int section,
@@ -164,7 +166,7 @@ int FeedsModel::columnCount(const QModelIndex &parent) const {
   }
 }
 
-FeedsModelRootItem *FeedsModel::itemForIndex(const QModelIndex &index) {
+FeedsModelRootItem *FeedsModel::itemForIndex(const QModelIndex &index) const {
   if (index.isValid() && index.model() == this) {
     return static_cast<FeedsModelRootItem*>(index.internalPointer());
   }
@@ -173,7 +175,7 @@ FeedsModelRootItem *FeedsModel::itemForIndex(const QModelIndex &index) {
   }
 }
 
-void FeedsModel::changeLayout(QModelIndexList list) {
+void FeedsModel::reloadChangedLayout(QModelIndexList list) {
   while (!list.isEmpty()) {
     QModelIndex ix = list.takeLast();
 
@@ -181,21 +183,20 @@ void FeedsModel::changeLayout(QModelIndexList list) {
     emit dataChanged(index(ix.row(), 0, ix.parent()),
                      index(ix.row(), FDS_MODEL_COUNTS_INDEX, ix.parent()));
 
-
     if (ix.parent().isValid()) {
       // Make sure that data of parent are changed too.
       list.append(ix.parent());
     }
   }
+}
 
-/*
+void FeedsModel::reloadWholeLayout() {
   // NOTE: Take a look at docs about this.
   // I have tested that this is LITTLE slower than code above,
   // but it is really SIMPLER, so if code above will be buggy, then
   // we can use this.
   emit layoutAboutToBeChanged();
   emit layoutChanged();
-*/
 }
 
 void FeedsModel::loadFromDatabase() {

src/core/feedsmodel.h

@@ -45,21 +45,21 @@ class FeedsModel : public QAbstractItemModel {
     // Returns feeds contained within single index.
     QList<FeedsModelFeed*> feedsForIndex(const QModelIndex &index);
 
-    // Returns feed/category which lies at the specified index or
-    // null if index is invalid.
-    FeedsModelRootItem *itemForIndex(const QModelIndex &index);
-
   public slots:
+    void reloadWholeLayout();
+
     // Signals that SOME data of this model need
     // to be reloaded by ALL attached views.
-    void changeLayout(QModelIndexList list);
+    void reloadChangedLayout(QModelIndexList list);
 
   protected:
+    // Returns feed/category which lies at the specified index or
+    // null if index is invalid.
+    FeedsModelRootItem *itemForIndex(const QModelIndex &index) const;
+
     // Loads feed/categories from the database.
     void loadFromDatabase();
 
-    // TODO: Otestovat metody itemForIndex, feedsForIndex, feedsForIndexes.
-
     // Takes lists of feeds/categories and assembles
     // them into the tree structure.
     void assembleCategories(CategoryAssignment categories);

src/core/feedsmodelrootitem.cpp

@@ -1,5 +1,6 @@
 #include <QVariant>
 
+#include "qtsingleapplication/qtsingleapplication.h"
 #include "core/feedsmodelrootitem.h"
 
 

src/core/feedsmodelstandardcategory.cpp

@@ -21,8 +21,11 @@ QVariant FeedsModelStandardCategory::data(int column, int role) const {
       if (column == FDS_MODEL_TITLE_INDEX) {
         return QObject::tr("%1\n\n"
                            "Category type: standard\n"
-                           "Creation date: %2").arg(m_title,
+                           "Creation date: %2%3").arg(m_title,
-                                                      m_creationDate.toString(Qt::DefaultLocaleShortDate));
+                                                      m_creationDate.toString(Qt::DefaultLocaleShortDate),
+                                                      m_childItems.size() == 0 ?
+                                                        QObject::tr("\n\nThis category does not contain any nested items.") :
+                                                        "");
       }
       else if (column == FDS_MODEL_COUNTS_INDEX) {
         return QObject::tr("%n unread message(s).", "", countOfUnreadMessages());
@@ -42,6 +45,15 @@ QVariant FeedsModelStandardCategory::data(int column, int role) const {
         return QVariant();
       }
 
+    case Qt::ForegroundRole:
+      if (m_childItems.size() == 0) {
+        // TODO: Make this configurable.
+        return QColor(Qt::red);
+      }
+      else {
+        return QVariant();
+      }
+
     case Qt::DisplayRole:
       if (column == FDS_MODEL_TITLE_INDEX) {
         return QString("%1%2").arg(m_title, "-C");

src/gui/feedsview.cpp

@@ -34,7 +34,7 @@ void FeedsView::updateCountsOfSelectedFeeds() {
     feed->updateCounts();
   }
 
-  m_sourceModel->changeLayout(mapped_rows);
+  m_sourceModel->reloadChangedLayout(mapped_rows);
 }
 
 void FeedsView::setupAppearance() {

src/gui/messagesview.cpp

@@ -188,7 +188,6 @@ void MessagesView::loadFeeds(const QList<int> &feed_ids) {
 }
 
 void MessagesView::openSelectedSourceArticlesExternally() {
-
   QString browser = Settings::getInstance()->value(APP_CFG_MESSAGES,
                                                    "external_browser_executable").toString();
   QString arguments = Settings::getInstance()->value(APP_CFG_MESSAGES,