Experimental show unread msgs only. #113

src/librssguard/core/messagesproxymodel.cpp

@@ -5,14 +5,19 @@
 #include "core/messagesmodel.h"
 #include "miscellaneous/regexfactory.h"
 
+#include <QTimer>
+
 MessagesProxyModel::MessagesProxyModel(MessagesModel* source_model, QObject* parent)
-  : QSortFilterProxyModel(parent), m_sourceModel(source_model) {
+  : QSortFilterProxyModel(parent), m_sourceModel(source_model), m_showUnreadOnly(false) {
   setObjectName(QSL("MessagesProxyModel"));
+
   setSortRole(Qt::EditRole);
   setSortCaseSensitivity(Qt::CaseInsensitive);
+
   setFilterCaseSensitivity(Qt::CaseInsensitive);
   setFilterKeyColumn(-1);
   setFilterRole(Qt::EditRole);
+
   setDynamicSortFilter(false);
   setSourceModel(m_sourceModel);
 }
@@ -60,6 +65,28 @@ bool MessagesProxyModel::lessThan(const QModelIndex& left, const QModelIndex& ri
   return false;
 }
 
+bool MessagesProxyModel::filterAcceptsRow(int source_row, const QModelIndex& source_parent) const {
+  return
+    (!m_showUnreadOnly || !m_sourceModel->messageAt(source_row).m_isRead) &&
+    QSortFilterProxyModel::filterAcceptsRow(source_row, source_parent);
+}
+
+bool MessagesProxyModel::showUnreadOnly() const {
+  return m_showUnreadOnly;
+}
+
+void MessagesProxyModel::setShowUnreadOnly(bool show_unread_only) {
+  m_showUnreadOnly = show_unread_only;
+}
+
+void MessagesProxyModel::invalidateUnreadMessagesFilter(bool set_new_value, bool show_unread_only) {
+  if (set_new_value) {
+    setShowUnreadOnly(show_unread_only);
+  }
+
+  QTimer::singleShot(0, this, &MessagesProxyModel::invalidateFilter);
+}
+
 QModelIndexList MessagesProxyModel::mapListFromSource(const QModelIndexList& indexes, bool deep) const {
   QModelIndexList mapped_indexes;
 

src/librssguard/core/messagesproxymodel.h

@@ -11,9 +11,7 @@ class MessagesProxyModel : public QSortFilterProxyModel {
   Q_OBJECT
 
   public:
-
-    // Constructors and destructors.
-    explicit MessagesProxyModel(MessagesModel* source_model, QObject* parent = 0);
+    explicit MessagesProxyModel(MessagesModel* source_model, QObject* parent = nullptr);
     virtual ~MessagesProxyModel();
 
     QModelIndex getNextPreviousUnreadItemIndex(int default_row);
@@ -28,14 +26,21 @@ class MessagesProxyModel : public QSortFilterProxyModel {
     // Performs sort of items.
     void sort(int column, Qt::SortOrder order = Qt::AscendingOrder);
 
+    bool showUnreadOnly() const;
+    void setShowUnreadOnly(bool show_unread_only);
+
+  public slots:
+    void invalidateUnreadMessagesFilter(bool set_new_value = false, bool show_unread_only = false);
+
   private:
     QModelIndex getNextUnreadItemIndex(int default_row, int max_row) const;
 
-    // Compares two rows of data.
     bool lessThan(const QModelIndex& left, const QModelIndex& right) const;
+    bool filterAcceptsRow(int source_row, const QModelIndex& source_parent) const;
 
     // Source model pointer.
     MessagesModel* m_sourceModel;
+    bool m_showUnreadOnly;
 };
 
 #endif // MESSAGESPROXYMODEL_H

src/librssguard/gui/dialogs/formmain.cpp

@@ -160,6 +160,7 @@ QList<QAction*> FormMain::allActions() const {
   actions << m_ui->m_actionClearSelectedItems;
   actions << m_ui->m_actionClearAllItems;
   actions << m_ui->m_actionShowOnlyUnreadItems;
+  actions << m_ui->m_actionShowOnlyUnreadMessages;
   actions << m_ui->m_actionMarkSelectedMessagesAsRead;
   actions << m_ui->m_actionMarkSelectedMessagesAsUnread;
   actions << m_ui->m_actionSwitchImportanceOfSelectedMessages;
@@ -514,6 +515,7 @@ void FormMain::setupIcons() {
   m_ui->m_actionSelectPreviousMessage->setIcon(icon_theme_factory->fromTheme(QSL("go-up")));
   m_ui->m_actionSelectNextUnreadMessage->setIcon(icon_theme_factory->fromTheme(QSL("mail-mark-unread")));
   m_ui->m_actionShowOnlyUnreadItems->setIcon(icon_theme_factory->fromTheme(QSL("mail-mark-unread")));
+  m_ui->m_actionShowOnlyUnreadMessages->setIcon(icon_theme_factory->fromTheme(QSL("mail-mark-unread")));
   m_ui->m_actionExpandCollapseItem->setIcon(icon_theme_factory->fromTheme(QSL("format-indent-more")));
   m_ui->m_actionRestoreSelectedMessages->setIcon(icon_theme_factory->fromTheme(QSL("view-refresh")));
   m_ui->m_actionRestoreAllRecycleBins->setIcon(icon_theme_factory->fromTheme(QSL("view-refresh")));
@@ -740,6 +742,8 @@ void FormMain::createConnections() {
           tabWidget()->feedMessageViewer(), &FeedMessageViewer::switchMessageSplitterOrientation);
   connect(m_ui->m_actionShowOnlyUnreadItems, &QAction::toggled,
           tabWidget()->feedMessageViewer(), &FeedMessageViewer::toggleShowOnlyUnreadFeeds);
+  connect(m_ui->m_actionShowOnlyUnreadMessages, &QAction::toggled,
+          tabWidget()->feedMessageViewer(), &FeedMessageViewer::toggleShowOnlyUnreadMessages);
   connect(m_ui->m_actionRestoreSelectedMessages, &QAction::triggered,
           tabWidget()->feedMessageViewer()->messagesView(), &MessagesView::restoreSelectedMessages);
   connect(m_ui->m_actionRestoreAllRecycleBins, &QAction::triggered,

src/librssguard/gui/dialogs/formmain.ui

@@ -136,6 +136,7 @@
     <addaction name="m_actionOpenSelectedMessagesInternally"/>
     <addaction name="m_actionSendMessageViaEmail"/>
     <addaction name="m_actionMessagePreviewEnabled"/>
+    <addaction name="m_actionShowOnlyUnreadMessages"/>
     <addaction name="separator"/>
     <addaction name="m_actionSelectNextMessage"/>
     <addaction name="m_actionSelectPreviousMessage"/>
@@ -750,6 +751,14 @@
     <string>&amp;Copy URLs of selected items</string>
    </property>
   </action>
+  <action name="m_actionShowOnlyUnreadMessages">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="text">
+    <string>Show only &amp;unread messages</string>
+   </property>
+  </action>
  </widget>
  <customwidgets>
   <customwidget>

src/librssguard/gui/feedmessageviewer.cpp

@@ -167,6 +167,17 @@ void FeedMessageViewer::switchFeedComponentVisibility() {
   }
 }
 
+void FeedMessageViewer::toggleShowOnlyUnreadMessages() {
+  const QAction* origin = qobject_cast<QAction*>(sender());
+
+  if (origin == nullptr) {
+    m_messagesView->model()->invalidateUnreadMessagesFilter(true, false);
+  }
+  else {
+    m_messagesView->model()->invalidateUnreadMessagesFilter(true, origin->isChecked());
+  }
+}
+
 void FeedMessageViewer::toggleShowOnlyUnreadFeeds() {
   const QAction* origin = qobject_cast<QAction*>(sender());
 

src/librssguard/gui/feedmessageviewer.h

@@ -64,7 +64,7 @@ class RSSGUARD_DLLSPEC FeedMessageViewer : public TabContent {
     // toolbar.
     void switchFeedComponentVisibility();
 
-    // Toggles displayed feeds.
+    void toggleShowOnlyUnreadMessages();
     void toggleShowOnlyUnreadFeeds();
 
   private slots: