Let the user choose if folders are always shown first in the views of

Dolphin and Konqueror (the default) or not. This setting can be
changed in the View menu: "View->Sort By->Folders First".

FEATURE: 62007

svn path=/trunk/KDE/kdebase/apps/; revision=956820

19 files changed, 176 insertions, 0 deletions

diff --git a/src/dolphincolumnview.cpp b/src/dolphincolumnview.cpp
index 3a7f03e47..f34be92e9 100644
--- a/src/dolphincolumnview.cpp
+++ b/src/dolphincolumnview.cpp
@@ -65,6 +65,8 @@ DolphinColumnView::DolphinColumnView(QWidget* parent, DolphinController* control
             this, SLOT(slotSortingChanged(DolphinView::Sorting)));
     connect(view, SIGNAL(sortOrderChanged(Qt::SortOrder)),
             this, SLOT(slotSortOrderChanged(Qt::SortOrder)));
+    connect(view, SIGNAL(sortFoldersFirstChanged(bool)),
+            this, SLOT(slotSortFoldersFirstChanged(bool)));
     connect(view, SIGNAL(showHiddenFilesChanged()),
             this, SLOT(slotShowHiddenFilesChanged()));
     connect(view, SIGNAL(showPreviewChanged()),
@@ -448,6 +450,13 @@ void DolphinColumnView::slotSortOrderChanged(Qt::SortOrder order)
     }
 }
 
+void DolphinColumnView::slotSortFoldersFirstChanged(bool foldersFirst)
+{
+    foreach (DolphinColumnWidget* column, m_columns) {
+        column->setSortFoldersFirst(foldersFirst);
+    }
+}
+
 void DolphinColumnView::slotShowHiddenFilesChanged()
 {
     const bool show = m_controller->dolphinView()->showHiddenFiles();
diff --git a/src/dolphincolumnview.h b/src/dolphincolumnview.h
index 65e4ff3e9..360148672 100644
--- a/src/dolphincolumnview.h
+++ b/src/dolphincolumnview.h
@@ -167,6 +167,7 @@ private slots:
 
     void slotSortingChanged(DolphinView::Sorting sorting);
     void slotSortOrderChanged(Qt::SortOrder order);
+    void slotSortFoldersFirstChanged(bool foldersFirst);
     void slotShowHiddenFilesChanged();
     void slotShowPreviewChanged();
 
diff --git a/src/dolphincolumnwidget.cpp b/src/dolphincolumnwidget.cpp
index b0d40f5b6..e85c9491b 100644
--- a/src/dolphincolumnwidget.cpp
+++ b/src/dolphincolumnwidget.cpp
@@ -126,6 +126,7 @@ DolphinColumnWidget::DolphinColumnWidget(QWidget* parent,
     const DolphinView* dolphinView = m_view->m_controller->dolphinView();
     m_proxyModel->setSorting(dolphinView->sorting());
     m_proxyModel->setSortOrder(dolphinView->sortOrder());
+    m_proxyModel->setSortFoldersFirst(dolphinView->sortFoldersFirst());
 
     setModel(m_proxyModel);
 
@@ -210,6 +211,11 @@ void DolphinColumnWidget::setSortOrder(Qt::SortOrder order)
     m_proxyModel->setSortOrder(order);
 }
 
+void DolphinColumnWidget::setSortFoldersFirst(bool foldersFirst)
+{
+    m_proxyModel->setSortFoldersFirst(foldersFirst);
+}
+
 void DolphinColumnWidget::setShowHiddenFiles(bool show)
 {
     if (show != m_dirLister->showingDotFiles()) {
diff --git a/src/dolphincolumnwidget.h b/src/dolphincolumnwidget.h
index 916bfac2e..02c9aea81 100644
--- a/src/dolphincolumnwidget.h
+++ b/src/dolphincolumnwidget.h
@@ -86,6 +86,7 @@ public:
 
     void setSorting(DolphinView::Sorting sorting);
     void setSortOrder(Qt::SortOrder order);
+    void setSortFoldersFirst(bool foldersFirst);
     void setShowHiddenFiles(bool show);
     void setShowPreview(bool show);
 
diff --git a/src/dolphincontroller.cpp b/src/dolphincontroller.cpp
index b128c9033..85ff5039f 100644
--- a/src/dolphincontroller.cpp
+++ b/src/dolphincontroller.cpp
@@ -104,6 +104,11 @@ void DolphinController::indicateSortOrderChange(Qt::SortOrder order)
     emit sortOrderChanged(order);
 }
 
+void DolphinController::indicateSortFoldersFirstChange(bool foldersFirst)
+{
+    emit sortFoldersFirstChanged(foldersFirst);
+}
+
 void DolphinController::indicateAdditionalInfoChange(const KFileItemDelegate::InformationList& info)
 {
     emit additionalInfoChanged(info);
diff --git a/src/dolphincontroller.h b/src/dolphincontroller.h
index 29dd7dfb1..f6abbb148 100644
--- a/src/dolphincontroller.h
+++ b/src/dolphincontroller.h
@@ -59,6 +59,7 @@ class QWidget;
  * - indicateDroppedUrls()
  * - indicateSortingChange()
  * - indicateSortOrderChanged()
+ * - indicateSortFoldersFirstChanged()
  * - triggerItem()
  * - requestTab()
  * - handleKeyPressEvent()
@@ -165,6 +166,15 @@ public:
     void indicateSortOrderChange(Qt::SortOrder order);
 
     /**
+     * Informs the abstract Dolphin view about a change between separate sorting 
+     * (with folders first) and mixed sorting of files and folders done inside
+     * the view implementation. This method should be invoked by the view
+     * implementation (e. g. the details view uses this method in combination
+     * with the details header).
+     */
+    void indicateSortFoldersFirstChange(bool foldersFirst);
+
+    /**
      * Informs the abstract Dolphin view about an additional information change
      * done inside the view implementation. This method should be invoked by the
      * view implementation (e. g. the details view uses this method in combination
@@ -317,6 +327,14 @@ signals:
     void sortOrderChanged(Qt::SortOrder order);
 
     /**
+     * Is emitted if 'sort folders first' has been changed to \a foldersFirst
+     * by the view implementation (see indicateSortOrderChanged().
+     * The abstract Dolphin view connects
+     * to this signal to update its menu actions.
+     */
+    void sortFoldersFirstChanged(bool foldersFirst);
+
+    /**
      * Is emitted if the additional info has been changed to \a info
      * by the view implementation. The abstract Dolphin view connects
      * to this signal to update its menu actions.
diff --git a/src/dolphinpart.rc b/src/dolphinpart.rc
index 2ed6ea764..d0b2cc634 100644
--- a/src/dolphinpart.rc
+++ b/src/dolphinpart.rc
@@ -27,6 +27,7 @@
     <Action name="sort_by_tags" />
     <Separator/>
     <Action name="descending" />
+    <Action name="folders_first" />
    </Menu>
    <Menu name="additional_info">
     <text context="@title:menu">Additional Information</text>
diff --git a/src/dolphinsortfilterproxymodel.cpp b/src/dolphinsortfilterproxymodel.cpp
index 6b0a454a7..2622f9034 100644
--- a/src/dolphinsortfilterproxymodel.cpp
+++ b/src/dolphinsortfilterproxymodel.cpp
@@ -73,6 +73,23 @@ void DolphinSortFilterProxyModel::setSortOrder(Qt::SortOrder sortOrder)
     KDirSortFilterProxyModel::sort((int) m_sorting, m_sortOrder);
 }
 
+void DolphinSortFilterProxyModel::setSortFoldersFirst(bool foldersFirst)
+{
+    if (foldersFirst != sortFoldersFirst()) {
+        KDirSortFilterProxyModel::setSortFoldersFirst(foldersFirst);
+
+        // We need to make sure that the files and folders are really resorted.
+        // Without the following two lines, QSortFilterProxyModel::sort(int column, Qt::SortOrder order)
+        // would do nothing because neither the column nor the sort order have changed.
+        // TODO: remove this hack if we find a better way to force the ProxyModel to re-sort the data.
+        Qt::SortOrder tmpSortOrder = (m_sortOrder == Qt::AscendingOrder ? Qt::DescendingOrder : Qt::AscendingOrder);
+        KDirSortFilterProxyModel::sort((int) m_sorting, tmpSortOrder);
+
+        // Now comes the real sorting with the old column and sort order
+        KDirSortFilterProxyModel::sort((int) m_sorting, m_sortOrder);
+    } 
+}
+
 void DolphinSortFilterProxyModel::sort(int column, Qt::SortOrder sortOrder)
 {
     m_sorting = sortingForColumn(column);
diff --git a/src/dolphinsortfilterproxymodel.h b/src/dolphinsortfilterproxymodel.h
index b9e6b74e8..fa7bded92 100644
--- a/src/dolphinsortfilterproxymodel.h
+++ b/src/dolphinsortfilterproxymodel.h
@@ -56,6 +56,8 @@ public:
     void setSortOrder(Qt::SortOrder sortOrder);
     Qt::SortOrder sortOrder() const;
 
+    void setSortFoldersFirst(bool foldersFirst);
+
     /**
      * @reimplemented, @internal
      *
diff --git a/src/dolphinui.rc b/src/dolphinui.rc
index 05dfd3abb..a70285fb3 100644
--- a/src/dolphinui.rc
+++ b/src/dolphinui.rc
@@ -37,6 +37,7 @@
                 <Action name="sort_by_tags" />
                 <Separator/>
                 <Action name="descending" />
+                <Action name="folders_first" />
             </Menu>
             <Menu name="additional_info">
                 <text context="@title:menu">Additional Information</text>
diff --git a/src/dolphinview.cpp b/src/dolphinview.cpp
index ed17c94ab..f2f23d273 100644
--- a/src/dolphinview.cpp
+++ b/src/dolphinview.cpp
@@ -129,6 +129,8 @@ DolphinView::DolphinView(QWidget* parent,
             this, SLOT(updateSorting(DolphinView::Sorting)));
     connect(m_controller, SIGNAL(sortOrderChanged(Qt::SortOrder)),
             this, SLOT(updateSortOrder(Qt::SortOrder)));
+    connect(m_controller, SIGNAL(sortFoldersFirstChanged(bool)),
+            this, SLOT(updateSortFoldersFirst(bool)));
     connect(m_controller, SIGNAL(additionalInfoChanged(const KFileItemDelegate::InformationList&)),
             this, SLOT(updateAdditionalInfo(const KFileItemDelegate::InformationList&)));
     connect(m_controller, SIGNAL(itemTriggered(const KFileItem&)),
@@ -443,6 +445,18 @@ Qt::SortOrder DolphinView::sortOrder() const
     return m_proxyModel->sortOrder();
 }
 
+void DolphinView::setSortFoldersFirst(bool foldersFirst)
+{
+    if (sortFoldersFirst() != foldersFirst) {
+        updateSortFoldersFirst(foldersFirst);
+    }
+}
+
+bool DolphinView::sortFoldersFirst() const
+{
+    return m_proxyModel->sortFoldersFirst();
+}
+
 void DolphinView::setAdditionalInfo(KFileItemDelegate::InformationList info)
 {
     const KUrl viewPropsUrl = viewPropertiesUrl();
@@ -818,6 +832,11 @@ void DolphinView::toggleSortOrder()
     setSortOrder(order);
 }
 
+void DolphinView::toggleSortFoldersFirst()
+{
+    setSortFoldersFirst(!sortFoldersFirst());
+}
+
 void DolphinView::toggleAdditionalInfo(QAction* action)
 {
     const KFileItemDelegate::Information info =
@@ -987,6 +1006,16 @@ void DolphinView::updateSortOrder(Qt::SortOrder order)
     emit sortOrderChanged(order);
 }
 
+void DolphinView::updateSortFoldersFirst(bool foldersFirst)
+{
+    ViewProperties props(viewPropertiesUrl());
+    props.setSortFoldersFirst(foldersFirst);
+
+    m_proxyModel->setSortFoldersFirst(foldersFirst);
+
+    emit sortFoldersFirstChanged(foldersFirst);
+}
+
 void DolphinView::updateAdditionalInfo(const KFileItemDelegate::InformationList& info)
 {
     ViewProperties props(viewPropertiesUrl());
@@ -1277,6 +1306,12 @@ void DolphinView::applyViewProperties(const KUrl& url)
         emit sortOrderChanged(sortOrder);
     }
 
+    const bool sortFoldersFirst = props.sortFoldersFirst();
+    if (sortFoldersFirst != m_proxyModel->sortFoldersFirst()) {
+        m_proxyModel->setSortFoldersFirst(sortFoldersFirst);
+        emit sortFoldersFirstChanged(sortFoldersFirst);
+    }
+
     KFileItemDelegate::InformationList info = props.additionalInfo();
     if (info != m_fileItemDelegate->showInformation()) {
         m_fileItemDelegate->setShowInformation(info);
diff --git a/src/dolphinview.h b/src/dolphinview.h
index 385bcd50f..1df268ad7 100644
--- a/src/dolphinview.h
+++ b/src/dolphinview.h
@@ -267,6 +267,12 @@ public:
     /** Returns the current used sort order (Qt::Ascending or Qt::Descending). */
     Qt::SortOrder sortOrder() const;
 
+    /** Sets a separate sorting with folders first (true) or a mixed sorting of files and folders (false). */
+    void setSortFoldersFirst(bool foldersFirst);
+
+    /** Returns if files and folders are sorted separately or not. */
+    bool sortFoldersFirst() const;
+
     /** Sets the additional information which should be shown for the items. */
     void setAdditionalInfo(KFileItemDelegate::InformationList info);
 
@@ -422,6 +428,9 @@ public slots:
     /** Switches between an ascending and descending sorting order. */
     void toggleSortOrder();
 
+    /** Switches between a separate sorting (with folders first) and a mixed sorting of files and folders. */
+    void toggleSortFoldersFirst();
+
     /**
      * Switches on or off the displaying of additional information
      * as specified by \a action.
@@ -474,6 +483,9 @@ signals:
     /** Is emitted if the sort order (ascending or descending) has been changed. */
     void sortOrderChanged(Qt::SortOrder order);
 
+    /** Is emitted if the sorting of files and folders (separate with folders first or mixed) has been changed. */
+    void sortFoldersFirstChanged(bool foldersFirst);
+
     /** Is emitted if the additional information shown for this view has been changed. */
     void additionalInfoChanged();
 
@@ -588,6 +600,12 @@ private slots:
 
     /**
      * Updates the view properties of the current URL to the
+     * sorting of files and folders (separate with folders first or mixed) given by \a foldersFirst.
+     */
+    void updateSortFoldersFirst(bool foldersFirst);
+
+    /**
+     * Updates the view properties of the current URL to the
      * additional information given by \a info.
      */
     void updateAdditionalInfo(const KFileItemDelegate::InformationList& info);
diff --git a/src/dolphinviewactionhandler.cpp b/src/dolphinviewactionhandler.cpp
index 88530febf..71e9fd398 100644
--- a/src/dolphinviewactionhandler.cpp
+++ b/src/dolphinviewactionhandler.cpp
@@ -57,6 +57,8 @@ void DolphinViewActionHandler::setCurrentView(DolphinView* view)
             this, SLOT(slotShowPreviewChanged()));
     connect(view, SIGNAL(sortOrderChanged(Qt::SortOrder)),
             this, SLOT(slotSortOrderChanged(Qt::SortOrder)));
+    connect(view, SIGNAL(sortFoldersFirstChanged(bool)),
+            this, SLOT(slotSortFoldersFirstChanged(bool)));
     connect(view, SIGNAL(additionalInfoChanged()),
             this, SLOT(slotAdditionalInfoChanged()));
     connect(view, SIGNAL(categorizedSortingChanged()),
@@ -148,6 +150,10 @@ void DolphinViewActionHandler::createActions()
     sortDescending->setText(i18nc("@action:inmenu Sort", "Descending"));
     connect(sortDescending, SIGNAL(triggered()), this, SLOT(toggleSortOrder()));
 
+    KToggleAction* sortFoldersFirst = m_actionCollection->add<KToggleAction>("folders_first");
+    sortFoldersFirst->setText(i18nc("@action:inmenu Sort", "Folders First"));
+    connect(sortFoldersFirst, SIGNAL(triggered()), this, SLOT(toggleSortFoldersFirst()));
+
     QActionGroup* sortByActionGroup = createSortByActionGroup();
     connect(sortByActionGroup, SIGNAL(triggered(QAction*)), this, SLOT(slotSortTriggered(QAction*)));
 
@@ -356,6 +362,7 @@ void DolphinViewActionHandler::updateViewActions()
     showPreviewAction->setChecked(m_currentView->showPreview());
 
     slotSortOrderChanged(m_currentView->sortOrder());
+    slotSortFoldersFirstChanged(m_currentView->sortFoldersFirst());
     slotAdditionalInfoChanged();
     slotCategorizedSortingChanged();
     slotSortingChanged(m_currentView->sorting());
@@ -385,6 +392,11 @@ void DolphinViewActionHandler::toggleSortOrder()
     m_currentView->toggleSortOrder();
 }
 
+void DolphinViewActionHandler::toggleSortFoldersFirst()
+{
+    m_currentView->toggleSortFoldersFirst();
+}
+
 void DolphinViewActionHandler::slotSortOrderChanged(Qt::SortOrder order)
 {
     QAction* descending = m_actionCollection->action("descending");
@@ -392,6 +404,11 @@ void DolphinViewActionHandler::slotSortOrderChanged(Qt::SortOrder order)
     descending->setChecked(sortDescending);
 }
 
+void DolphinViewActionHandler::slotSortFoldersFirstChanged(bool foldersFirst)
+{
+    m_actionCollection->action("folders_first")->setChecked(foldersFirst);
+}
+
 void DolphinViewActionHandler::toggleAdditionalInfo(QAction* action)
 {
     emit actionBeingHandled();
diff --git a/src/dolphinviewactionhandler.h b/src/dolphinviewactionhandler.h
index 40062de04..91875ec0c 100644
--- a/src/dolphinviewactionhandler.h
+++ b/src/dolphinviewactionhandler.h
@@ -132,12 +132,20 @@ private Q_SLOTS:
     /** Switches between an ascending and descending sorting order. */
     void toggleSortOrder();
 
+    /** Switches between a separate sorting and a mixed sorting of files and folders. */
+    void toggleSortFoldersFirst();
+
     /**
      * Updates the state of the 'Sort Ascending/Descending' action.
      */
     void slotSortOrderChanged(Qt::SortOrder order);
 
     /**
+     * Updates the state of the 'Sort Folders First' action.
+     */
+    void slotSortFoldersFirstChanged(bool foldersFirst);
+
+    /**
      * Updates the state of the 'Sort by' actions.
      */
     void slotSortingChanged(DolphinView::Sorting sorting);
diff --git a/src/settings/dolphin_directoryviewpropertysettings.kcfg b/src/settings/dolphin_directoryviewpropertysettings.kcfg
index ead1325de..415b872b3 100644
--- a/src/settings/dolphin_directoryviewpropertysettings.kcfg
+++ b/src/settings/dolphin_directoryviewpropertysettings.kcfg
@@ -50,6 +50,11 @@
             <max code="true">Qt::DescendingOrder</max>
         </entry>
 
+        <entry name="SortFoldersFirst" type="Bool" >
+            <label context="@label">Show folders first when sorting files and folders</label>
+            <default>true</default>
+        </entry>
+
         <entry name="AdditionalInfo" type="Int">
             <label context="@label">Additional information</label>
             <default>0</default>
diff --git a/src/settings/viewpropertiesdialog.cpp b/src/settings/viewpropertiesdialog.cpp
index f407f7c90..7bd992ef1 100644
--- a/src/settings/viewpropertiesdialog.cpp
+++ b/src/settings/viewpropertiesdialog.cpp
@@ -62,6 +62,7 @@ ViewPropertiesDialog::ViewPropertiesDialog(DolphinView* dolphinView) :
     m_viewMode(0),
     m_sortOrder(0),
     m_sorting(0),
+    m_sortFoldersFirst(0),
     m_showPreview(0),
     m_showInGroups(0),
     m_showHiddenFiles(0),
@@ -122,6 +123,7 @@ ViewPropertiesDialog::ViewPropertiesDialog(DolphinView* dolphinView) :
     //    m_sorting->addItem(i18nc("@item:inlistbox Sort", "By Tags"));
     // }
 #endif
+    m_sortFoldersFirst = new QCheckBox(i18nc("@option:check", "Show folders first"));
     m_showPreview = new QCheckBox(i18nc("@option:check", "Show preview"));
     m_showInGroups = new QCheckBox(i18nc("@option:check", "Show in groups"));
     m_showHiddenFiles = new QCheckBox(i18nc("@option:check", "Show hidden files"));
@@ -142,6 +144,7 @@ ViewPropertiesDialog::ViewPropertiesDialog(DolphinView* dolphinView) :
 
     QVBoxLayout* propsBoxLayout = new QVBoxLayout(propsBox);
     propsBoxLayout->addWidget(propsGrid);
+    propsBoxLayout->addWidget(m_sortFoldersFirst);
     propsBoxLayout->addWidget(m_showPreview);
     propsBoxLayout->addWidget(m_showInGroups);
     propsBoxLayout->addWidget(m_showHiddenFiles);
@@ -157,6 +160,8 @@ ViewPropertiesDialog::ViewPropertiesDialog(DolphinView* dolphinView) :
             this, SLOT(slotSortOrderChanged(int)));
     connect(m_additionalInfo, SIGNAL(clicked()),
             this, SLOT(configureAdditionalInfo()));
+    connect(m_sortFoldersFirst, SIGNAL(clicked()),
+            this, SLOT(slotSortFoldersFirstChanged()));
     connect(m_showPreview, SIGNAL(clicked()),
             this, SLOT(slotShowPreviewChanged()));
     connect(m_showInGroups, SIGNAL(clicked()),
@@ -269,6 +274,13 @@ void ViewPropertiesDialog::slotCategorizedSortingChanged()
     markAsDirty(true);
 }
 
+void ViewPropertiesDialog::slotSortFoldersFirstChanged()
+{
+    const bool foldersFirst = m_sortFoldersFirst->isChecked();
+    m_viewProps->setSortFoldersFirst(foldersFirst);
+    markAsDirty(true);
+}
+
 void ViewPropertiesDialog::slotShowPreviewChanged()
 {
     const bool show = m_showPreview->isChecked();
@@ -370,6 +382,7 @@ void ViewPropertiesDialog::applyViewProperties()
     m_dolphinView->setMode(m_viewProps->viewMode());
     m_dolphinView->setSorting(m_viewProps->sorting());
     m_dolphinView->setSortOrder(m_viewProps->sortOrder());
+    m_dolphinView->setSortFoldersFirst(m_viewProps->sortFoldersFirst());
     m_dolphinView->setCategorizedSorting(m_viewProps->categorizedSorting());
     m_dolphinView->setAdditionalInfo(m_viewProps->additionalInfo());
     m_dolphinView->setShowPreview(m_viewProps->showPreview());
@@ -395,6 +408,7 @@ void ViewPropertiesDialog::loadSettings()
                          (index == DolphinView::IconsView);
     m_additionalInfo->setEnabled(enabled);
 
+    m_sortFoldersFirst->setChecked(m_viewProps->sortFoldersFirst());
     // load show preview, show in groups and show hidden files settings
     m_showPreview->setChecked(m_viewProps->showPreview());
 
diff --git a/src/settings/viewpropertiesdialog.h b/src/settings/viewpropertiesdialog.h
index fbfae3020..ce0c3e5b8 100644
--- a/src/settings/viewpropertiesdialog.h
+++ b/src/settings/viewpropertiesdialog.h
@@ -54,6 +54,7 @@ private slots:
     void slotSortingChanged(int index);
     void slotSortOrderChanged(int index);
     void slotCategorizedSortingChanged();
+    void slotSortFoldersFirstChanged();
     void slotShowPreviewChanged();
     void slotShowHiddenFilesChanged();
     void markAsDirty(bool isDirty);
@@ -71,6 +72,7 @@ private:
     KComboBox* m_viewMode;
     KComboBox* m_sortOrder;
     KComboBox* m_sorting;
+    QCheckBox* m_sortFoldersFirst;
     QCheckBox* m_showPreview;
     QCheckBox* m_showInGroups;
     QCheckBox* m_showHiddenFiles;
diff --git a/src/viewproperties.cpp b/src/viewproperties.cpp
index 510e4195b..3fc102d6c 100644
--- a/src/viewproperties.cpp
+++ b/src/viewproperties.cpp
@@ -198,6 +198,19 @@ Qt::SortOrder ViewProperties::sortOrder() const
     return static_cast<Qt::SortOrder>(m_node->sortOrder());
 }
 
+void ViewProperties::setSortFoldersFirst(bool foldersFirst)
+{
+    if (m_node->sortFoldersFirst() != foldersFirst) {
+        m_node->setSortFoldersFirst(foldersFirst);
+        updateTimeStamp();
+    }
+}
+
+bool ViewProperties::sortFoldersFirst() const
+{
+    return m_node->sortFoldersFirst();
+}
+
 void ViewProperties::setAdditionalInfo(KFileItemDelegate::InformationList list)
 {
     int info = NoInfo;
diff --git a/src/viewproperties.h b/src/viewproperties.h
index 3237686c7..a0279004e 100644
--- a/src/viewproperties.h
+++ b/src/viewproperties.h
@@ -71,6 +71,9 @@ public:
     void setSortOrder(Qt::SortOrder sortOrder);
     Qt::SortOrder sortOrder() const;
 
+    void setSortFoldersFirst(bool foldersFirst);
+    bool sortFoldersFirst() const;
+
     /**
      * Sets the additional information for the current set view-mode.
      * Note that the additional-info property is the only property where