Refactoring.

src/services/abstract/rootitem.cpp

@@ -51,7 +51,7 @@ QList<QAction*> RootItem::contextMenu() {
   return QList<QAction*>();
 }
 
-bool RootItem::canBeEdited() {
+bool RootItem::canBeEdited() const {
   return false;
 }
 
@@ -59,7 +59,7 @@ bool RootItem::editViaGui() {
   return false;
 }
 
-bool RootItem::canBeDeleted() {
+bool RootItem::canBeDeleted() const {
   return false;
 }
 
@@ -359,12 +359,12 @@ bool RootItem::removeChild(RootItem *child) {
   return m_childItems.removeOne(child);
 }
 
-Category *RootItem::toCategory() {
-  return static_cast<Category*>(this);
+Category *RootItem::toCategory() const {
+  return static_cast<Category*>(const_cast<RootItem*>(this));
 }
 
-Feed *RootItem::toFeed() {
-  return static_cast<Feed*>(this);
+Feed *RootItem::toFeed() const {
+  return static_cast<Feed*>(const_cast<RootItem*>(this));
 }
 
 ServiceRoot *RootItem::toServiceRoot() const {

src/services/abstract/rootitem.h

@@ -82,14 +82,14 @@ class RootItem : public QObject {
     virtual QList<QAction*> contextMenu();
 
     // Can properties of this item be edited?
-    virtual bool canBeEdited();
+    virtual bool canBeEdited() const;
 
     // Performs editing of properties of this item (probably via dialog)
     // and returns result status.
     virtual bool editViaGui();
 
     // Can the item be deleted?
-    virtual bool canBeDeleted();
+    virtual bool canBeDeleted() const;
 
     // Performs deletion of the item, this
     // method should NOT display any additional dialogs.
@@ -255,8 +255,8 @@ class RootItem : public QObject {
     }
 
     // Converters
-    Category *toCategory();
-    Feed *toFeed();
+    Category *toCategory() const;
+    Feed *toFeed() const;
     ServiceRoot *toServiceRoot() const;
 
   private:

src/services/abstract/serviceentrypoint.h

@@ -41,7 +41,7 @@ class ServiceEntryPoint {
     // some kind of first-time configuration dialog inside itself
     // before returning the root item.
     // Returns NULL if initialization of new root cannot be done.
-    virtual ServiceRoot *createNewRoot() = 0;
+    virtual ServiceRoot *createNewRoot() const = 0;
 
     // Performs initialization of all service accounts created using this entry
     // point from persistent DB.

src/services/abstract/serviceroot.cpp

@@ -36,7 +36,7 @@ ServiceRoot::~ServiceRoot() {
 bool ServiceRoot::deleteViaGui() {
   QSqlDatabase connection = qApp->database()->connection(metaObject()->className(), DatabaseFactory::FromSettings);
   QSqlQuery query(connection);
-  int account_id = accountId();
+  const int account_id = accountId();
   query.setForwardOnly(true);
 
   QStringList queries;
@@ -84,7 +84,7 @@ bool ServiceRoot::markAsReadUnread(RootItem::ReadStatus status) {
 
 QList<Message> ServiceRoot::undeletedMessages() const {
   QList<Message> messages;
-  int account_id = accountId();
+  const int account_id = accountId();
   QSqlDatabase database = qApp->database()->connection(metaObject()->className(), DatabaseFactory::FromSettings);
   QSqlQuery query(database);
 

src/services/abstract/serviceroot.h

@@ -82,6 +82,10 @@ class ServiceRoot : public RootItem {
     virtual void start(bool freshly_activated) = 0;
     virtual void stop() = 0;
 
+    // Account ID corresponds with DB attribute Accounts (id).
+    int accountId() const;
+    void setAccountId(int account_id);
+
     // Returns the UNIQUE code of the given service.
     // NOTE: Keep in sync with ServiceEntryRoot::code().
     virtual QString code() const = 0;
@@ -156,10 +160,6 @@ class ServiceRoot : public RootItem {
     void requestItemReassignment(RootItem *item, RootItem *new_parent);
     void requestItemRemoval(RootItem *item);
 
-    // Account ID corresponds with DB attribute Accounts (id).
-    int accountId() const;
-    void setAccountId(int account_id);
-
   public slots:
     virtual void addNewFeed(const QString &url = QString()) = 0;
     virtual void addNewCategory() = 0;

src/services/standard/standardcategory.h

@@ -47,11 +47,11 @@ class StandardCategory : public Category {
     Qt::ItemFlags additionalFlags() const;
     bool performDragDropChange(RootItem *target_item);
 
-    bool canBeEdited() {
+    bool canBeEdited() const {
       return true;
     }
 
-    bool canBeDeleted() {
+    bool canBeDeleted() const {
       return true;
     }
 

src/services/standard/standardfeed.h

@@ -63,11 +63,11 @@ class StandardFeed : public Feed {
 
     QList<QAction*> contextMenu();
 
-    bool canBeEdited() {
+    bool canBeEdited() const {
       return true;
     }
 
-    bool canBeDeleted() {
+    bool canBeDeleted() const {
       return true;
     }
 

src/services/standard/standardserviceentrypoint.cpp

@@ -59,7 +59,7 @@ QString StandardServiceEntryPoint::code() const {
   return SERVICE_CODE_STD_RSS;
 }
 
-ServiceRoot *StandardServiceEntryPoint::createNewRoot() {
+ServiceRoot *StandardServiceEntryPoint::createNewRoot() const {
   // Switch DB.
   QSqlDatabase database = qApp->database()->connection(QSL("StandardServiceEntryPoint"), DatabaseFactory::FromSettings);
   QSqlQuery query(database);

src/services/standard/standardserviceentrypoint.h

@@ -34,7 +34,7 @@ class StandardServiceEntryPoint : public ServiceEntryPoint {
     QIcon icon() const;
     QString code() const;
 
-    ServiceRoot *createNewRoot();
+    ServiceRoot *createNewRoot() const;
     QList<ServiceRoot*> initializeSubtree() const;
 };
 

src/services/standard/standardserviceroot.cpp

@@ -108,11 +108,11 @@ QString StandardServiceRoot::code() const {
   return SERVICE_CODE_STD_RSS;
 }
 
-bool StandardServiceRoot::canBeEdited() {
+bool StandardServiceRoot::canBeEdited() const {
   return false;
 }
 
-bool StandardServiceRoot::canBeDeleted() {
+bool StandardServiceRoot::canBeDeleted() const {
   return true;
 }
 

src/services/standard/standardserviceroot.h

@@ -43,8 +43,8 @@ class StandardServiceRoot : public ServiceRoot {
 
     QString code() const;
 
-    bool canBeEdited();
-    bool canBeDeleted();
+    bool canBeEdited() const;
+    bool canBeDeleted() const;
     bool deleteViaGui();
 
     bool markAsReadUnread(ReadStatus status);

src/services/tt-rss/ttrssfeed.cpp

@@ -138,7 +138,7 @@ void TtRssFeed::updateCounts(bool including_total_count) {
   }
 }
 
-bool TtRssFeed::canBeEdited() {
+bool TtRssFeed::canBeEdited() const {
   return true;
 }
 

src/services/tt-rss/ttrssfeed.h

@@ -41,7 +41,7 @@ class TtRssFeed : public Feed {
 
     void updateCounts(bool including_total_count);
 
-    bool canBeEdited();
+    bool canBeEdited() const;
     bool editViaGui();
 
     int countOfAllMessages() const;

src/services/tt-rss/ttrssserviceentrypoint.cpp

@@ -71,7 +71,7 @@ QString TtRssServiceEntryPoint::code() const {
   return SERVICE_CODE_TT_RSS;
 }
 
-ServiceRoot *TtRssServiceEntryPoint::createNewRoot() {
+ServiceRoot *TtRssServiceEntryPoint::createNewRoot() const {
   QPointer<FormEditAccount> form_acc = new FormEditAccount(qApp->mainForm());
   TtRssServiceRoot *new_root = form_acc.data()->execForCreate();
   delete form_acc.data();

src/services/tt-rss/ttrssserviceentrypoint.h

@@ -35,7 +35,7 @@ class TtRssServiceEntryPoint : public ServiceEntryPoint {
     QIcon icon() const;
     QString code() const;
 
-    ServiceRoot *createNewRoot();
+    ServiceRoot *createNewRoot() const;
     QList<ServiceRoot*> initializeSubtree() const;
 };
 

src/services/tt-rss/ttrssserviceroot.cpp

@@ -129,11 +129,11 @@ void TtRssServiceRoot::addNewCategory() {
   // Do nothing.
 }
 
-bool TtRssServiceRoot::canBeEdited() {
+bool TtRssServiceRoot::canBeEdited() const {
   return true;
 }
 
-bool TtRssServiceRoot::canBeDeleted() {
+bool TtRssServiceRoot::canBeDeleted() const {
   return true;
 }
 

src/services/tt-rss/ttrssserviceroot.h

@@ -40,8 +40,8 @@ class TtRssServiceRoot : public ServiceRoot {
 
     QString code() const;
 
-    bool canBeEdited();
-    bool canBeDeleted();
+    bool canBeEdited() const;
+    bool canBeDeleted() const;
     bool editViaGui();
     bool deleteViaGui();