X-Git-Url: https://cloud.milkyroute.net/gitweb/dolphin.git/blobdiff_plain/6bfa0ccfc701df5af5f043fce3168b3840858212..159234944c5717645f277a09d0cffb40fa3820a4:/src/kitemviews/kfileitemmodelrolesupdater.cpp

diff --git a/src/kitemviews/kfileitemmodelrolesupdater.cpp b/src/kitemviews/kfileitemmodelrolesupdater.cpp
index e9b69566d..f17a77e0a 100644
--- a/src/kitemviews/kfileitemmodelrolesupdater.cpp
+++ b/src/kitemviews/kfileitemmodelrolesupdater.cpp
@@ -23,14 +23,14 @@
 
 #include <KConfig>
 #include <KConfigGroup>
-#include <KDebug>
-#include <KDirWatch>
 #include <KFileItem>
-#include <KGlobal>
+#include <KIconLoader>
+#include <KJobWidgets>
 #include <KIO/JobUiDelegate>
 #include <KIO/PreviewJob>
 
 #include "private/kpixmapmodifier.h"
+#include "private/kdirectorycontentscounter.h"
 
 #include <QApplication>
 #include <QPainter>
@@ -40,18 +40,10 @@
 
 #include <algorithm>
 
-#ifdef HAVE_NEPOMUK
-    #include "private/knepomukrolesprovider.h"
-    #include <Nepomuk2/ResourceWatcher>
-    #include <Nepomuk2/ResourceManager>
-#endif
-
-// Required includes for subItemsCount():
-#ifdef Q_WS_WIN
-    #include <QDir>
-#else
-    #include <dirent.h>
-    #include <QFile>
+#ifdef HAVE_BALOO
+    #include "private/kbaloorolesprovider.h"
+    #include <Baloo/File>
+    #include <Baloo/FileMonitor>
 #endif
 
 // #define KFILEITEMMODELROLESUPDATER_DEBUG
@@ -95,50 +87,47 @@ KFileItemModelRolesUpdater::KFileItemModelRolesUpdater(KFileItemModel* model, QO
     m_recentlyChangedItemsTimer(0),
     m_recentlyChangedItems(),
     m_changedItems(),
-    m_dirWatcher(0),
-    m_watchedDirs()
-  #ifdef HAVE_NEPOMUK
-  , m_nepomukResourceWatcher(0),
-    m_nepomukUriItems()
+    m_directoryContentsCounter(0)
+  #ifdef HAVE_BALOO
+  , m_balooFileMonitor(0)
   #endif
 {
     Q_ASSERT(model);
 
-    const KConfigGroup globalConfig(KGlobal::config(), "PreviewSettings");
+    const KConfigGroup globalConfig(KSharedConfig::openConfig(), "PreviewSettings");
     m_enabledPlugins = globalConfig.readEntry("Plugins", QStringList()
                                                          << "directorythumbnail"
                                                          << "imagethumbnail"
                                                          << "jpegthumbnail");
 
-    connect(m_model, SIGNAL(itemsInserted(KItemRangeList)),
-            this,    SLOT(slotItemsInserted(KItemRangeList)));
-    connect(m_model, SIGNAL(itemsRemoved(KItemRangeList)),
-            this,    SLOT(slotItemsRemoved(KItemRangeList)));
-    connect(m_model, SIGNAL(itemsChanged(KItemRangeList,QSet<QByteArray>)),
-            this,    SLOT(slotItemsChanged(KItemRangeList,QSet<QByteArray>)));
-    connect(m_model, SIGNAL(itemsMoved(KItemRange,QList<int>)),
-            this,    SLOT(slotItemsMoved(KItemRange,QList<int>)));
-    connect(m_model, SIGNAL(sortRoleChanged(QByteArray,QByteArray)),
-            this,    SLOT(slotSortRoleChanged(QByteArray,QByteArray)));
+    connect(m_model, &KFileItemModel::itemsInserted,
+            this,    &KFileItemModelRolesUpdater::slotItemsInserted);
+    connect(m_model, &KFileItemModel::itemsRemoved,
+            this,    &KFileItemModelRolesUpdater::slotItemsRemoved);
+    connect(m_model, &KFileItemModel::itemsChanged,
+            this,    &KFileItemModelRolesUpdater::slotItemsChanged);
+    connect(m_model, &KFileItemModel::itemsMoved,
+            this,    &KFileItemModelRolesUpdater::slotItemsMoved);
+    connect(m_model, &KFileItemModel::sortRoleChanged,
+            this,    &KFileItemModelRolesUpdater::slotSortRoleChanged);
 
     // Use a timer to prevent that each call of slotItemsChanged() results in a synchronous
     // resolving of the roles. Postpone the resolving until no update has been done for 1 second.
     m_recentlyChangedItemsTimer = new QTimer(this);
     m_recentlyChangedItemsTimer->setInterval(1000);
     m_recentlyChangedItemsTimer->setSingleShot(true);
-    connect(m_recentlyChangedItemsTimer, SIGNAL(timeout()), this, SLOT(resolveRecentlyChangedItems()));
+    connect(m_recentlyChangedItemsTimer, &QTimer::timeout, this, &KFileItemModelRolesUpdater::resolveRecentlyChangedItems);
 
     m_resolvableRoles.insert("size");
     m_resolvableRoles.insert("type");
     m_resolvableRoles.insert("isExpandable");
-#ifdef HAVE_NEPOMUK
-    m_resolvableRoles += KNepomukRolesProvider::instance().roles();
+#ifdef HAVE_BALOO
+    m_resolvableRoles += KBalooRolesProvider::instance().roles();
 #endif
 
-    // When folders are expandable or the item-count is shown for folders, it is necessary
-    // to watch the number of items of the sub-folder to be able to react on changes.
-    m_dirWatcher = new KDirWatch(this);
-    connect(m_dirWatcher, SIGNAL(dirty(QString)), this, SLOT(slotDirWatchDirty(QString)));
+    m_directoryContentsCounter = new KDirectoryContentsCounter(m_model, this);
+    connect(m_directoryContentsCounter, &KDirectoryContentsCounter::result,
+            this,                       &KFileItemModelRolesUpdater::slotDirectoryContentsCountReceived);
 }
 
 KFileItemModelRolesUpdater::~KFileItemModelRolesUpdater()
@@ -272,34 +261,29 @@ void KFileItemModelRolesUpdater::setRoles(const QSet<QByteArray>& roles)
     if (m_roles != roles) {
         m_roles = roles;
 
-#ifdef HAVE_NEPOMUK
-        if (Nepomuk2::ResourceManager::instance()->initialized()) {
-            // Check whether there is at least one role that must be resolved
-            // with the help of Nepomuk. If this is the case, a (quite expensive)
-            // resolving will be done in KFileItemModelRolesUpdater::rolesData() and
-            // the role gets watched for changes.
-            const KNepomukRolesProvider& rolesProvider = KNepomukRolesProvider::instance();
-            bool hasNepomukRole = false;
-            QSetIterator<QByteArray> it(roles);
-            while (it.hasNext()) {
-                const QByteArray& role = it.next();
-                if (rolesProvider.roles().contains(role)) {
-                    hasNepomukRole = true;
-                    break;
-                }
+#ifdef HAVE_BALOO
+        // Check whether there is at least one role that must be resolved
+        // with the help of Baloo. If this is the case, a (quite expensive)
+        // resolving will be done in KFileItemModelRolesUpdater::rolesData() and
+        // the role gets watched for changes.
+        const KBalooRolesProvider& rolesProvider = KBalooRolesProvider::instance();
+        bool hasBalooRole = false;
+        QSetIterator<QByteArray> it(roles);
+        while (it.hasNext()) {
+            const QByteArray& role = it.next();
+            if (rolesProvider.roles().contains(role)) {
+                hasBalooRole = true;
+                break;
             }
+        }
 
-            if (hasNepomukRole && !m_nepomukResourceWatcher) {
-                Q_ASSERT(m_nepomukUriItems.isEmpty());
-
-                m_nepomukResourceWatcher = new Nepomuk2::ResourceWatcher(this);
-                connect(m_nepomukResourceWatcher, SIGNAL(propertyChanged(Nepomuk2::Resource,Nepomuk2::Types::Property,QVariantList,QVariantList)),
-                        this, SLOT(applyChangedNepomukRoles(Nepomuk2::Resource,Nepomuk2::Types::Property)));
-            } else if (!hasNepomukRole && m_nepomukResourceWatcher) {
-                delete m_nepomukResourceWatcher;
-                m_nepomukResourceWatcher = 0;
-                m_nepomukUriItems.clear();
-            }
+        if (hasBalooRole && !m_balooFileMonitor) {
+            m_balooFileMonitor = new Baloo::FileMonitor(this);
+            connect(m_balooFileMonitor, &Baloo::FileMonitor::fileMetaDataChanged,
+                    this, &KFileItemModelRolesUpdater::applyChangedBalooRoles);
+        } else if (!hasBalooRole && m_balooFileMonitor) {
+            delete m_balooFileMonitor;
+            m_balooFileMonitor = 0;
         }
 #endif
 
@@ -367,49 +351,19 @@ void KFileItemModelRolesUpdater::slotItemsRemoved(const KItemRangeList& itemRang
 
     const bool allItemsRemoved = (m_model->count() == 0);
 
-    if (!m_watchedDirs.isEmpty()) {
-        // Don't let KDirWatch watch for removed items
-        if (allItemsRemoved) {
-            foreach (const QString& path, m_watchedDirs) {
-                m_dirWatcher->removeDir(path);
-            }
-            m_watchedDirs.clear();
-        } else {
-            QMutableSetIterator<QString> it(m_watchedDirs);
-            while (it.hasNext()) {
-                const QString& path = it.next();
-                if (m_model->index(KUrl(path)) < 0) {
-                    m_dirWatcher->removeDir(path);
-                    it.remove();
-                }
-            }
-        }
-    }
-
-#ifdef HAVE_NEPOMUK
-    if (m_nepomukResourceWatcher) {
-        // Don't let the ResourceWatcher watch for removed items
+#ifdef HAVE_BALOO
+    if (m_balooFileMonitor) {
+        // Don't let the FileWatcher watch for removed items
         if (allItemsRemoved) {
-            m_nepomukResourceWatcher->setResources(QList<Nepomuk2::Resource>());
-            m_nepomukResourceWatcher->stop();
-            m_nepomukUriItems.clear();
+            m_balooFileMonitor->clear();
         } else {
-            QList<Nepomuk2::Resource> newResources;
-            const QList<Nepomuk2::Resource> oldResources = m_nepomukResourceWatcher->resources();
-            foreach (const Nepomuk2::Resource& resource, oldResources) {
-                const QUrl uri = resource.uri();
-                const KUrl itemUrl = m_nepomukUriItems.value(uri);
+            QStringList newFileList;
+            foreach (const QString& itemUrl, m_balooFileMonitor->files()) {
                 if (m_model->index(itemUrl) >= 0) {
-                    newResources.append(resource);
-                } else {
-                    m_nepomukUriItems.remove(uri);
+                    newFileList.append(itemUrl);
                 }
             }
-            m_nepomukResourceWatcher->setResources(newResources);
-            if (newResources.isEmpty()) {
-                Q_ASSERT(m_nepomukUriItems.isEmpty());
-                m_nepomukResourceWatcher->stop();
-            }
+            m_balooFileMonitor->setFiles(newFileList);
         }
     }
 #endif
@@ -588,11 +542,11 @@ void KFileItemModelRolesUpdater::slotGotPreview(const KFileItem& item, const QPi
 
     data.insert("iconPixmap", scaledPixmap);
 
-    disconnect(m_model, SIGNAL(itemsChanged(KItemRangeList,QSet<QByteArray>)),
-               this,    SLOT(slotItemsChanged(KItemRangeList,QSet<QByteArray>)));
+    disconnect(m_model, &KFileItemModel::itemsChanged,
+               this,    &KFileItemModelRolesUpdater::slotItemsChanged);
     m_model->setData(index, data);
-    connect(m_model, SIGNAL(itemsChanged(KItemRangeList,QSet<QByteArray>)),
-            this,    SLOT(slotItemsChanged(KItemRangeList,QSet<QByteArray>)));
+    connect(m_model, &KFileItemModel::itemsChanged,
+            this,    &KFileItemModelRolesUpdater::slotItemsChanged);
 
     m_finishedItems.insert(item);
 }
@@ -610,13 +564,13 @@ void KFileItemModelRolesUpdater::slotPreviewFailed(const KFileItem& item)
         QHash<QByteArray, QVariant> data;
         data.insert("iconPixmap", QPixmap());
 
-        disconnect(m_model, SIGNAL(itemsChanged(KItemRangeList,QSet<QByteArray>)),
-                   this,    SLOT(slotItemsChanged(KItemRangeList,QSet<QByteArray>)));
+        disconnect(m_model, &KFileItemModel::itemsChanged,
+                   this,    &KFileItemModelRolesUpdater::slotItemsChanged);
         m_model->setData(index, data);
-        connect(m_model, SIGNAL(itemsChanged(KItemRangeList,QSet<QByteArray>)),
-                this,    SLOT(slotItemsChanged(KItemRangeList,QSet<QByteArray>)));
+        connect(m_model, &KFileItemModel::itemsChanged,
+                this,    &KFileItemModelRolesUpdater::slotItemsChanged);
 
-        applyResolvedRoles(item, ResolveAll);
+        applyResolvedRoles(index, ResolveAll);
         m_finishedItems.insert(item);
     }
 }
@@ -670,11 +624,11 @@ void KFileItemModelRolesUpdater::resolveNextSortRole()
         m_state = Idle;
 
         // Prevent that we try to update the items twice.
-        disconnect(m_model, SIGNAL(itemsMoved(KItemRange,QList<int>)),
-                   this,    SLOT(slotItemsMoved(KItemRange,QList<int>)));
+        disconnect(m_model, &KFileItemModel::itemsMoved,
+                   this,    &KFileItemModelRolesUpdater::slotItemsMoved);
         applySortProgressToModel();
-        connect(m_model, SIGNAL(itemsMoved(KItemRange,QList<int>)),
-                this,    SLOT(slotItemsMoved(KItemRange,QList<int>)));
+        connect(m_model, &KFileItemModel::itemsMoved,
+                this,    &KFileItemModelRolesUpdater::slotItemsMoved);
         startUpdating();
     }
 }
@@ -693,7 +647,7 @@ void KFileItemModelRolesUpdater::resolveNextPendingRoles()
             continue;
         }
 
-        applyResolvedRoles(item, ResolveAll);
+        applyResolvedRoles(index, ResolveAll);
         m_finishedItems.insert(item);
         m_changedItems.remove(item);
         break;
@@ -710,15 +664,15 @@ void KFileItemModelRolesUpdater::resolveNextPendingRoles()
                 QHash<QByteArray, QVariant> data;
                 data.insert("iconPixmap", QPixmap());
 
-                disconnect(m_model, SIGNAL(itemsChanged(KItemRangeList,QSet<QByteArray>)),
-                           this,    SLOT(slotItemsChanged(KItemRangeList,QSet<QByteArray>)));
+                disconnect(m_model, &KFileItemModel::itemsChanged,
+                           this,    &KFileItemModelRolesUpdater::slotItemsChanged);
                 for (int index = 0; index <= m_model->count(); ++index) {
                     if (m_model->data(index).contains("iconPixmap")) {
                         m_model->setData(index, data);
                     }
                 }
-                connect(m_model, SIGNAL(itemsChanged(KItemRangeList,QSet<QByteArray>)),
-                        this,    SLOT(slotItemsChanged(KItemRangeList,QSet<QByteArray>)));
+                connect(m_model, &KFileItemModel::itemsChanged,
+                        this,    &KFileItemModelRolesUpdater::slotItemsChanged);
 
             }
             m_clearPreviews = false;
@@ -737,14 +691,9 @@ void KFileItemModelRolesUpdater::resolveRecentlyChangedItems()
     updateChangedItems();
 }
 
-void KFileItemModelRolesUpdater::applyChangedNepomukRoles(const Nepomuk2::Resource& resource, const Nepomuk2::Types::Property& property)
+void KFileItemModelRolesUpdater::applyChangedBalooRoles(const QString& itemUrl)
 {
-#ifdef HAVE_NEPOMUK
-    if (!Nepomuk2::ResourceManager::instance()->initialized()) {
-        return;
-    }
-
-    const KUrl itemUrl = m_nepomukUriItems.value(resource.uri());
+#ifdef HAVE_BALOO
     const KFileItem item = m_model->fileItem(itemUrl);
 
     if (item.isNull()) {
@@ -753,54 +702,48 @@ void KFileItemModelRolesUpdater::applyChangedNepomukRoles(const Nepomuk2::Resour
         return;
     }
 
-    QHash<QByteArray, QVariant> data = rolesData(item);
+    Baloo::File file(item.localPath());
+    file.load();
 
-    const KNepomukRolesProvider& rolesProvider = KNepomukRolesProvider::instance();
-    const QByteArray role = rolesProvider.roleForPropertyUri(property.uri());
-    if (!role.isEmpty() && m_roles.contains(role)) {
-        // Overwrite the changed role value with an empty QVariant, because the roles
+    const KBalooRolesProvider& rolesProvider = KBalooRolesProvider::instance();
+    QHash<QByteArray, QVariant> data;
+
+    foreach (const QByteArray& role, rolesProvider.roles()) {
+        // Overwrite all the role values with an empty QVariant, because the roles
         // provider doesn't overwrite it when the property value list is empty.
         // See bug 322348
         data.insert(role, QVariant());
     }
 
-    QHashIterator<QByteArray, QVariant> it(rolesProvider.roleValues(resource, m_roles));
+    QHashIterator<QByteArray, QVariant> it(rolesProvider.roleValues(file, m_roles));
     while (it.hasNext()) {
         it.next();
         data.insert(it.key(), it.value());
     }
 
-    disconnect(m_model, SIGNAL(itemsChanged(KItemRangeList,QSet<QByteArray>)),
-               this,    SLOT(slotItemsChanged(KItemRangeList,QSet<QByteArray>)));
+    disconnect(m_model, &KFileItemModel::itemsChanged,
+               this,    &KFileItemModelRolesUpdater::slotItemsChanged);
     const int index = m_model->index(item);
     m_model->setData(index, data);
-    connect(m_model, SIGNAL(itemsChanged(KItemRangeList,QSet<QByteArray>)),
-            this,    SLOT(slotItemsChanged(KItemRangeList,QSet<QByteArray>)));
+    connect(m_model, &KFileItemModel::itemsChanged,
+            this,    &KFileItemModelRolesUpdater::slotItemsChanged);
 #else
 #ifndef Q_CC_MSVC
-    Q_UNUSED(resource);
+    Q_UNUSED(itemUrl);
 #endif
 #endif
 }
 
-void KFileItemModelRolesUpdater::slotDirWatchDirty(const QString& path)
+void KFileItemModelRolesUpdater::slotDirectoryContentsCountReceived(const QString& path, int count)
 {
     const bool getSizeRole = m_roles.contains("size");
     const bool getIsExpandableRole = m_roles.contains("isExpandable");
 
     if (getSizeRole || getIsExpandableRole) {
-        const int index = m_model->index(KUrl(path));
+        const int index = m_model->index(QUrl::fromLocalFile(path));
         if (index >= 0) {
-            if (!m_model->fileItem(index).isDir()) {
-                // If INotify is used, KDirWatch issues the dirty() signal
-                // also for changed files inside the directory, even if we
-                // don't enable this behavior explicitly (see bug 309740).
-                return;
-            }
-
             QHash<QByteArray, QVariant> data;
 
-            const int count = subItemsCount(path);
             if (getSizeRole) {
                 data.insert("size", count);
             }
@@ -808,9 +751,11 @@ void KFileItemModelRolesUpdater::slotDirWatchDirty(const QString& path)
                 data.insert("isExpandable", count > 0);
             }
 
-            // Note that we do not block the itemsChanged signal here.
-            // This ensures that a new preview will be generated.
+            disconnect(m_model, &KFileItemModel::itemsChanged,
+                       this,    &KFileItemModelRolesUpdater::slotItemsChanged);
             m_model->setData(index, data);
+            connect(m_model, &KFileItemModel::itemsChanged,
+                    this,    &KFileItemModelRolesUpdater::slotItemsChanged);
         }
     }
 }
@@ -884,8 +829,7 @@ void KFileItemModelRolesUpdater::updateVisibleIcons()
     // Try to determine the final icons for all visible items.
     int index;
     for (index = m_firstVisibleIndex; index <= lastVisibleIndex && timer.elapsed() < MaxBlockTimeout; ++index) {
-        const KFileItem item = m_model->fileItem(index);
-        applyResolvedRoles(item, ResolveFast);
+        applyResolvedRoles(index, ResolveFast);
     }
 
     // KFileItemListView::initializeItemListWidget(KItemListWidget*) will load
@@ -942,15 +886,15 @@ void KFileItemModelRolesUpdater::startPreviewJob()
 
     job->setIgnoreMaximumSize(itemSubSet.first().isLocalFile());
     if (job->ui()) {
-        job->ui()->setWindow(qApp->activeWindow());
+        KJobWidgets::setWindow(job, qApp->activeWindow());
     }
 
-    connect(job,  SIGNAL(gotPreview(KFileItem,QPixmap)),
-            this, SLOT(slotGotPreview(KFileItem,QPixmap)));
-    connect(job,  SIGNAL(failed(KFileItem)),
-            this, SLOT(slotPreviewFailed(KFileItem)));
-    connect(job,  SIGNAL(finished(KJob*)),
-            this, SLOT(slotPreviewJobFinished()));
+    connect(job,  &KIO::PreviewJob::gotPreview,
+            this, &KFileItemModelRolesUpdater::slotGotPreview);
+    connect(job,  &KIO::PreviewJob::failed,
+            this, &KFileItemModelRolesUpdater::slotPreviewFailed);
+    connect(job,  &KIO::PreviewJob::finished,
+            this, &KFileItemModelRolesUpdater::slotPreviewJobFinished);
 
     m_previewJob = job;
 }
@@ -1037,17 +981,17 @@ void KFileItemModelRolesUpdater::applySortRole(int index)
         data.insert("type", item.mimeComment());
     } else if (m_model->sortRole() == "size" && item.isLocalFile() && item.isDir()) {
         const QString path = item.localPath();
-        data.insert("size", subItemsCount(path));
+        data.insert("size", m_directoryContentsCounter->countDirectoryContentsSynchronously(path));
     } else {
-        // Probably the sort role is a Nepomuk role - just determine all roles.
+        // Probably the sort role is a baloo role - just determine all roles.
         data = rolesData(item);
     }
 
-    disconnect(m_model, SIGNAL(itemsChanged(KItemRangeList,QSet<QByteArray>)),
-               this,    SLOT(slotItemsChanged(KItemRangeList,QSet<QByteArray>)));
+    disconnect(m_model, &KFileItemModel::itemsChanged,
+               this,    &KFileItemModelRolesUpdater::slotItemsChanged);
     m_model->setData(index, data);
-    connect(m_model, SIGNAL(itemsChanged(KItemRangeList,QSet<QByteArray>)),
-            this,    SLOT(slotItemsChanged(KItemRangeList,QSet<QByteArray>)));
+    connect(m_model, &KFileItemModel::itemsChanged,
+            this,    &KFileItemModelRolesUpdater::slotItemsChanged);
 }
 
 void KFileItemModelRolesUpdater::applySortProgressToModel()
@@ -1058,27 +1002,20 @@ void KFileItemModelRolesUpdater::applySortProgressToModel()
     m_model->emitSortProgress(resolvedCount);
 }
 
-bool KFileItemModelRolesUpdater::applyResolvedRoles(const KFileItem& item, ResolveHint hint)
+bool KFileItemModelRolesUpdater::applyResolvedRoles(int index, ResolveHint hint)
 {
-    if (item.isNull()) {
-        return false;
-    }
-
+    const KFileItem item = m_model->fileItem(index);
     const bool resolveAll = (hint == ResolveAll);
 
     bool iconChanged = false;
     if (!item.isMimeTypeKnown() || !item.isFinalIconKnown()) {
         item.determineMimeType();
         iconChanged = true;
-    } else {
-        const int index = m_model->index(item);
-        if (!m_model->data(index).contains("iconName")) {
-            iconChanged = true;
-        }
+    } else if (!m_model->data(index).contains("iconName")) {
+        iconChanged = true;
     }
 
     if (iconChanged || resolveAll || m_clearPreviews) {
-        const int index = m_model->index(item);
         if (index < 0) {
             return false;
         }
@@ -1094,18 +1031,18 @@ bool KFileItemModelRolesUpdater::applyResolvedRoles(const KFileItem& item, Resol
             data.insert("iconPixmap", QPixmap());
         }
 
-        disconnect(m_model, SIGNAL(itemsChanged(KItemRangeList,QSet<QByteArray>)),
-                   this,    SLOT(slotItemsChanged(KItemRangeList,QSet<QByteArray>)));
+        disconnect(m_model, &KFileItemModel::itemsChanged,
+                   this,    &KFileItemModelRolesUpdater::slotItemsChanged);
         m_model->setData(index, data);
-        connect(m_model, SIGNAL(itemsChanged(KItemRangeList,QSet<QByteArray>)),
-                this,    SLOT(slotItemsChanged(KItemRangeList,QSet<QByteArray>)));
+        connect(m_model, &KFileItemModel::itemsChanged,
+                this,    &KFileItemModelRolesUpdater::slotItemsChanged);
         return true;
     }
 
     return false;
 }
 
-QHash<QByteArray, QVariant> KFileItemModelRolesUpdater::rolesData(const KFileItem& item) const
+QHash<QByteArray, QVariant> KFileItemModelRolesUpdater::rolesData(const KFileItem& item)
 {
     QHash<QByteArray, QVariant> data;
 
@@ -1114,19 +1051,10 @@ QHash<QByteArray, QVariant> KFileItemModelRolesUpdater::rolesData(const KFileIte
 
     if ((getSizeRole || getIsExpandableRole) && item.isDir()) {
         if (item.isLocalFile()) {
+            // Tell m_directoryContentsCounter that we want to count the items
+            // inside the directory. The result will be received in slotDirectoryContentsCountReceived.
             const QString path = item.localPath();
-            const int count = subItemsCount(path);
-            if (getSizeRole) {
-                data.insert("size", count);
-            }
-            if (getIsExpandableRole) {
-                data.insert("isExpandable", count > 0);
-            }
-
-            if (!m_dirWatcher->contains(path)) {
-                m_dirWatcher->addDir(path);
-                m_watchedDirs.insert(path);
-            }
+            m_directoryContentsCounter->addDirectory(path);
         } else if (getSizeRole) {
             data.insert("size", -1); // -1 indicates an unknown number of items
         }
@@ -1138,93 +1066,15 @@ QHash<QByteArray, QVariant> KFileItemModelRolesUpdater::rolesData(const KFileIte
 
     data.insert("iconOverlays", item.overlays());
 
-#ifdef HAVE_NEPOMUK
-    if (m_nepomukResourceWatcher) {
-        const KNepomukRolesProvider& rolesProvider = KNepomukRolesProvider::instance();
-        Nepomuk2::Resource resource(item.nepomukUri());
-        QHashIterator<QByteArray, QVariant> it(rolesProvider.roleValues(resource, m_roles));
-        while (it.hasNext()) {
-            it.next();
-            data.insert(it.key(), it.value());
-        }
-
-        QUrl uri = resource.uri();
-        if (uri.isEmpty()) {
-            // TODO: Is there another way to explicitly create a resource?
-            // We need a resource to be able to track it for changes.
-            resource.setRating(0);
-            uri = resource.uri();
-        }
-        if (!uri.isEmpty() && !m_nepomukUriItems.contains(uri)) {
-            m_nepomukResourceWatcher->addResource(resource);
-
-            if (m_nepomukUriItems.isEmpty()) {
-                m_nepomukResourceWatcher->start();
-            }
-
-            m_nepomukUriItems.insert(uri, item.url());
-        }
+#ifdef HAVE_BALOO
+    if (m_balooFileMonitor) {
+        m_balooFileMonitor->addFile(item.localPath());
+        applyChangedBalooRoles(item.localPath());
     }
 #endif
-
     return data;
 }
 
-int KFileItemModelRolesUpdater::subItemsCount(const QString& path) const
-{
-    const bool countHiddenFiles = m_model->showHiddenFiles();
-    const bool showFoldersOnly  = m_model->showDirectoriesOnly();
-
-#ifdef Q_WS_WIN
-    QDir dir(path);
-    QDir::Filters filters = QDir::NoDotAndDotDot | QDir::System;
-    if (countHiddenFiles) {
-        filters |= QDir::Hidden;
-    }
-    if (showFoldersOnly) {
-        filters |= QDir::Dirs;
-    } else {
-        filters |= QDir::AllEntries;
-    }
-    return dir.entryList(filters).count();
-#else
-    // Taken from kdelibs/kio/kio/kdirmodel.cpp
-    // Copyright (C) 2006 David Faure <faure@kde.org>
-
-    int count = -1;
-    DIR* dir = ::opendir(QFile::encodeName(path));
-    if (dir) {  // krazy:exclude=syscalls
-        count = 0;
-        struct dirent *dirEntry = 0;
-        while ((dirEntry = ::readdir(dir))) {
-            if (dirEntry->d_name[0] == '.') {
-                if (dirEntry->d_name[1] == '\0' || !countHiddenFiles) {
-                    // Skip "." or hidden files
-                    continue;
-                }
-                if (dirEntry->d_name[1] == '.' && dirEntry->d_name[2] == '\0') {
-                    // Skip ".."
-                    continue;
-                }
-            }
-
-            // If only directories are counted, consider an unknown file type and links also
-            // as directory instead of trying to do an expensive stat()
-            // (see bugs 292642 and 299997).
-            const bool countEntry = !showFoldersOnly ||
-                                    dirEntry->d_type == DT_DIR ||
-                                    dirEntry->d_type == DT_LNK ||
-                                    dirEntry->d_type == DT_UNKNOWN;
-            if (countEntry) {
-                ++count;
-            }
-        }
-        ::closedir(dir);
-    }
-    return count;
-#endif
-}
-
 void KFileItemModelRolesUpdater::updateAllPreviews()
 {
     if (m_state == Paused) {
@@ -1238,12 +1088,12 @@ void KFileItemModelRolesUpdater::updateAllPreviews()
 void KFileItemModelRolesUpdater::killPreviewJob()
 {
     if (m_previewJob) {
-        disconnect(m_previewJob,  SIGNAL(gotPreview(KFileItem,QPixmap)),
-                   this, SLOT(slotGotPreview(KFileItem,QPixmap)));
-        disconnect(m_previewJob,  SIGNAL(failed(KFileItem)),
-                   this, SLOT(slotPreviewFailed(KFileItem)));
-        disconnect(m_previewJob,  SIGNAL(finished(KJob*)),
-                   this, SLOT(slotPreviewJobFinished()));
+        disconnect(m_previewJob,  &KIO::PreviewJob::gotPreview,
+                   this, &KFileItemModelRolesUpdater::slotGotPreview);
+        disconnect(m_previewJob,  &KIO::PreviewJob::failed,
+                   this, &KFileItemModelRolesUpdater::slotPreviewFailed);
+        disconnect(m_previewJob,  &KIO::PreviewJob::finished,
+                   this, &KFileItemModelRolesUpdater::slotPreviewJobFinished);
         m_previewJob->kill();
         m_previewJob = 0;
         m_pendingPreviewItems.clear();
@@ -1307,4 +1157,3 @@ QList<int> KFileItemModelRolesUpdater::indexesToResolve() const
     return result;
 }
 
-#include "kfileitemmodelrolesupdater.moc"