Merge remote-tracking branch 'origin/KDE/4.11'

[dolphin.git] / src / kitemviews / kfileitemmodel.cpp

diff --git a/src/kitemviews/kfileitemmodel.cpp b/src/kitemviews/kfileitemmodel.cpp
index c7e1c86004246096b71f7e51dd70ef06cde0cefd..37a30519af74277a985d977cd2acbc0eb8bb3618 100644 (file)
--- a/src/kitemviews/kfileitemmodel.cpp
+++ b/src/kitemviews/kfileitemmodel.cpp
@@ -192,8 +192,30 @@ bool KFileItemModel::setData(int index, const QHash<QByteArray, QVariant>& value
 
     emit itemsChanged(KItemRangeList() << KItemRange(index, 1), changedRoles);
 
-    if (changedRoles.contains(sortRole())) {
-        m_resortAllItemsTimer->start();
+    // Trigger a resorting if the item's correct position has changed. Note
+    // that this can happen even if the sort role has not changed at all
+    // because the file name can be used as a fallback.
+    if (changedRoles.contains(sortRole()) || changedRoles.contains(roleForType(NameRole))) {
+        // Compare the changed item with its neighbors to see
+        // if an expensive resorting is needed at all.
+        const ItemData* changedItem = m_itemData.at(index);
+        const ItemData* previousItem = (index == 0) ? 0 : m_itemData.at(index - 1);
+        const ItemData* nextItem = (index == m_itemData.count() - 1) ? 0 : m_itemData.at(index + 1);
+
+        if ((previousItem && lessThan(changedItem, previousItem))
+            || (nextItem && lessThan(nextItem, changedItem))) {
+            m_resortAllItemsTimer->start();
+        } else if (groupedSorting() && changedRoles.contains(sortRole())) {
+            // The position is still correct, but the groups might have changed
+            // if the changed item is either the first or the last item in a
+            // group.
+            // In principle, we could try to find out if the item really is the
+            // first or last one in its group and then update the groups
+            // (possibly with a delayed timer to make sure that we don't
+            // re-calculate the groups very often if items are updated one by
+            // one), but starting m_resortAllItemsTimer is easier.
+            m_resortAllItemsTimer->start();
+        }
     }
 
     return true;
@@ -950,7 +972,7 @@ void KFileItemModel::slotRefreshItems(const QList<QPair<KFileItem, KFileItem> >&
     emit itemsChanged(itemRangeList, changedRoles);
 
     if (changedRoles.contains(sortRole())) {
-        resortAllItems();
+        m_resortAllItemsTimer->start();
     }
 }
 
@@ -1299,25 +1321,20 @@ QHash<QByteArray, QVariant> KFileItemModel::retrieveData(const KFileItem& item,
     data.insert(sharedValue("url"), item.url());
 
     const bool isDir = item.isDir();
-    if (m_requestRole[IsDirRole]) {
-        data.insert(sharedValue("isDir"), isDir);
+    if (m_requestRole[IsDirRole] && isDir) {
+        data.insert(sharedValue("isDir"), true);
     }
 
-    if (m_requestRole[IsLinkRole]) {
-        const bool isLink = item.isLink();
-        data.insert(sharedValue("isLink"), isLink);
+    if (m_requestRole[IsLinkRole] && item.isLink()) {
+        data.insert(sharedValue("isLink"), true);
     }
 
     if (m_requestRole[NameRole]) {
         data.insert(sharedValue("text"), item.text());
     }
 
-    if (m_requestRole[SizeRole]) {
-        if (isDir) {
-            data.insert(sharedValue("size"), QVariant());
-        } else {
-            data.insert(sharedValue("size"), item.size());
-        }
+    if (m_requestRole[SizeRole] && !isDir) {
+        data.insert(sharedValue("size"), item.size());
     }
 
     if (m_requestRole[DateRole]) {
@@ -1371,17 +1388,15 @@ QHash<QByteArray, QVariant> KFileItemModel::retrieveData(const KFileItem& item,
         data.insert(sharedValue("path"), path);
     }
 
-    if (m_requestRole[IsExpandableRole]) {
-        data.insert(sharedValue("isExpandable"), item.isDir());
+    if (m_requestRole[IsExpandableRole] && isDir) {
+        data.insert(sharedValue("isExpandable"), true);
     }
 
     if (m_requestRole[ExpandedParentsCountRole]) {
-        int level = 0;
         if (parent) {
-            level = parent->values["expandedParentsCount"].toInt() + 1;
+            const int level = parent->values["expandedParentsCount"].toInt() + 1;
+            data.insert(sharedValue("expandedParentsCount"), level);
         }
-
-        data.insert(sharedValue("expandedParentsCount"), level);
     }
 
     if (item.isMimeTypeKnown()) {
@@ -1390,6 +1405,9 @@ QHash<QByteArray, QVariant> KFileItemModel::retrieveData(const KFileItem& item,
         if (m_requestRole[TypeRole]) {
             data.insert(sharedValue("type"), item.mimeComment());
         }
+    } else if (m_requestRole[TypeRole] && isDir) {
+        static const QString folderMimeType = item.mimeComment();
+        data.insert(sharedValue("type"), folderMimeType);
     }
 
     return data;
@@ -1996,7 +2014,15 @@ void KFileItemModel::determineMimeTypes(const KFileItemList& items, int timeout)
     QElapsedTimer timer;
     timer.start();
     foreach (const KFileItem& item, items) { // krazy:exclude=foreach
-        item.determineMimeType();
+        // Only determine mime types for files here. For directories,
+        // KFileItem::determineMimeType() reads the .directory file inside to
+        // load the icon, but this is not necessary at all if we just need the
+        // type. Some special code for setting the correct mime type for
+        // directories is in retrieveData().
+        if (!item.isDir()) {
+            item.determineMimeType();
+        }
+
         if (timer.elapsed() > timeout) {
             // Don't block the user interface, let the remaining items
             // be resolved asynchronously.