feat(group): Auto Grouping by Dict' Containning Folder

src/dict/dictionary.cc

@@ -173,7 +173,11 @@ vector< wstring > Class::getAlternateWritings( wstring const & )
 
 QString Class::getContainingFolder()
 {
-  return QFileInfo( QString::fromStdString( dictionaryFiles[ 0 ] ) ).absolutePath();
+  if ( !dictionaryFiles.empty() ) {
+    return QFileInfo( QString::fromStdString( dictionaryFiles[ 0 ] ) ).absolutePath();
+  }
+
+  return QString();
 }
 
 sptr< DataRequest > Class::getResource( string const & /*name*/ )

src/ui/groups.cc

@@ -51,9 +51,11 @@ Groups::Groups( QWidget * parent,
   connect( ui.addDictsToGroup, &QAbstractButton::clicked, this, &Groups::addToGroup );
   connect( ui.dictionaries, &QAbstractItemView::doubleClicked, this, &Groups::addToGroup );
   connect( ui.removeDictsFromGroup, &QAbstractButton::clicked, this, &Groups::removeFromGroup );
-  connect( ui.autoGroups, &QAbstractButton::clicked, this, &Groups::addAutoGroups );
   connect( ui.groups, &DictGroupsWidget::showDictionaryInfo, this, &Groups::showDictionaryInfo );
 
+  connect( ui.autoGroups, &QAbstractButton::clicked, this, &Groups::addAutoGroups );
+  connect( ui.autoGroupsFolders, &QAbstractButton::clicked, this, &Groups::addAutoGroupsByFolders );
+
   ui.dictionaries->setContextMenuPolicy( Qt::CustomContextMenu );
   connect( ui.dictionaries, &QWidget::customContextMenuRequested, this, &Groups::showDictInfo );
 
@@ -124,6 +126,11 @@ void Groups::addAutoGroups()
   countChanged();
 }
 
+void Groups::addAutoGroupsByFolders() {
+  ui.groups->addAutoGroupsByFolders();
+  countChanged();
+}
+
 void Groups::renameCurrent()
 {
   int current = ui.groups->currentIndex();

src/ui/groups.hh

@@ -49,7 +49,12 @@ private slots:
   void removeAll();
   void addToGroup();
   void removeFromGroup();
+
+  /// Traditional Add Group by Language
   void addAutoGroups();
+  /// by Containing Folder
+  void addAutoGroupsByFolders();
+
   void showDictInfo( const QPoint & pos );
   void fillGroupsMenu();
   void switchToGroup( QAction * act );

src/ui/groups.ui

@@ -6,7 +6,7 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>662</width>
+    <width>791</width>
     <height>319</height>
    </rect>
   </property>
@@ -147,16 +147,6 @@
          </property>
         </widget>
        </item>
-       <item>
-        <widget class="QPushButton" name="autoGroups">
-         <property name="toolTip">
-          <string>Create language-based groups</string>
-         </property>
-         <property name="text">
-          <string>Auto groups</string>
-         </property>
-        </widget>
-       </item>
        <item>
         <widget class="QPushButton" name="renameGroup">
          <property name="toolTip">
@@ -187,6 +177,56 @@
          </property>
         </widget>
        </item>
+       <item>
+        <spacer name="horizontalSpacer_2">
+         <property name="orientation">
+          <enum>Qt::Horizontal</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>40</width>
+           <height>20</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
+      </layout>
+     </item>
+     <item>
+      <layout class="QHBoxLayout" name="horizontalLayout_2">
+       <item>
+        <widget class="QPushButton" name="autoGroups">
+         <property name="toolTip">
+          <string>Create language-based groups</string>
+         </property>
+         <property name="text">
+          <string>Auto groups by Languages</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QPushButton" name="autoGroupsFolders">
+         <property name="toolTip">
+          <string>Create folder-based groups.</string>
+         </property>
+         <property name="text">
+          <string>Auto groups by Folders</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <spacer name="horizontalSpacer">
+         <property name="orientation">
+          <enum>Qt::Horizontal</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>40</width>
+           <height>20</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
       </layout>
      </item>
     </layout>
@@ -227,7 +267,6 @@
   <tabstop>removeDictsFromGroup</tabstop>
   <tabstop>groups</tabstop>
   <tabstop>addGroup</tabstop>
-  <tabstop>autoGroups</tabstop>
   <tabstop>renameGroup</tabstop>
   <tabstop>removeGroup</tabstop>
   <tabstop>removeAllGroups</tabstop>

src/ui/groups_widgets.cc

@@ -15,6 +15,7 @@
 #include <QDir>
 #include <QIcon>
 #include <QMap>
+#include <QMultiMap>
 #include <QVector>
 #include <QFileInfo>
 #include <QFileDialog>
@@ -772,6 +773,57 @@ void DictGroupsWidget::addAutoGroups()
   }
 }
 
+
+void DictGroupsWidget::addAutoGroupsByFolders()
+{
+  if ( activeDicts->empty() ) {
+    return;
+  }
+
+  if ( QMessageBox::information( this,
+                                 tr( "Confirmation" ),
+                                 tr( "Are you sure you want to generate a set of groups "
+                                     "based on containing folders?" ),
+                                 QMessageBox::Yes,
+                                 QMessageBox::Cancel )
+       != QMessageBox::Yes ) {
+    return;
+  }
+
+  QMultiMap< QString, sptr< Dictionary::Class > > dictMap;
+
+  for ( const auto & dict : *activeDicts ) {
+    QString dictFolder = dict->getContainingFolder();
+
+    if ( dictFolder.isEmpty() ) {
+      continue;
+    }
+
+    QDir dir = dictFolder;
+    if ( dir.cdUp() ) {
+      dictMap.insert( dir.dirName(), dict );
+    }
+    else {
+      qWarning() << "Cannot auto group because parent folder cannot be reached: " << dir;
+      continue;
+    }
+  }
+
+  for ( const auto & group : dictMap.uniqueKeys() ) {
+    if ( count() != 0 ) {
+      setCurrentIndex( count() - 1 );
+    }
+
+    addUniqueGroup( group );
+    DictListModel * model = getCurrentModel();
+
+    for ( auto dict : dictMap.values( group ) ) {
+      model->addRow( QModelIndex(), dict );
+    }
+  }
+}
+
+
 QString DictGroupsWidget::getCurrentGroupName() const
 {
   int current = currentIndex();

src/ui/groups_widgets.hh

@@ -164,6 +164,9 @@ public:
 
   void addAutoGroups();
 
+  /// auto grouping by containning folder
+  void addAutoGroupsByFolders();
+
   /// Returns currently chosen group's name
   QString getCurrentGroupName() const;
 
@@ -187,7 +190,7 @@ private:
 
   /// Add source group to target group
   void combineGroups( int source, int target );
-
+  
   unsigned nextId;
   std::vector< sptr< Dictionary::Class > > const * allDicts;
   std::vector< sptr< Dictionary::Class > > const * activeDicts;