Implement 'Sort By Size'

It only works for files so far. The sorting of folders
by the number of items is more tricky to get right because
this number is retrieved asynchronously by
KFileItemModelRolesUpdater.

diff --git a/src/kitemviews/kfileitemmodel.cpp b/src/kitemviews/kfileitemmodel.cpp
index 1391acb835ff50e766651097da24674db262fdb2..0eb8d11e01e86d39641690ae6e88b4bb334fe998 100644 (file)
--- a/src/kitemviews/kfileitemmodel.cpp
+++ b/src/kitemviews/kfileitemmodel.cpp
@@ -868,7 +868,7 @@ bool KFileItemModel::lessThan(const KFileItem& a, const KFileItem& b) const
         }
     }
 
-    if (m_sortFoldersFirst) {
+    if (m_sortFoldersFirst || m_sortRole == SizeRole) {
         const bool isDirA = a.isDir();
         const bool isDirB = b.isDir();
         if (isDirA && !isDirB) {
@@ -900,6 +900,20 @@ bool KFileItemModel::lessThan(const KFileItem& a, const KFileItem& b) const
         break;
     }
 
+    case SizeRole: {
+        // TODO: Implement sorting folders by the number of items inside.
+        // This is more tricky to get right because this number is retrieved
+        // asynchronously by KFileItemModelRolesUpdater.
+        const KIO::filesize_t sizeA = a.size();
+        const KIO::filesize_t sizeB = b.size();
+        if (sizeA < sizeB) {
+            result = -1;
+        } else if (sizeA > sizeB) {
+            result = +1;
+        }
+        break;
+    }
+
     default:
         break;
     }

diff --git a/src/tests/kfileitemmodeltest.cpp b/src/tests/kfileitemmodeltest.cpp
index 820cf78481081df3d0c6b922f9c8cf55ccd89ae9..ea8c19c05ae2d7563f56410f9fdce5f9e781d340 100644 (file)
--- a/src/tests/kfileitemmodeltest.cpp
+++ b/src/tests/kfileitemmodeltest.cpp
@@ -386,6 +386,23 @@ void KFileItemModelTest::testSorting()
     QVERIFY(!m_model->sortFoldersFirst());
     QCOMPARE(itemsInModel(), QStringList() << "a" << "b" << "c" << "d" << "e");
 
+    // Sort by Size, ascending, 'Sort Folders First' enabled
+    m_model->setSortRole("size");
+    m_model->setSortFoldersFirst(true);
+    QCOMPARE(m_model->sortRole(), QByteArray("size"));
+    QCOMPARE(m_model->sortOrder(), Qt::AscendingOrder);
+    QVERIFY(m_model->sortFoldersFirst());
+    QCOMPARE(itemsInModel(), QStringList() << "c" << "a" << "b" << "e" << "d");
+
+    // Sort by Size, descending, 'Sort Folders First' enabled
+    m_model->setSortOrder(Qt::DescendingOrder);
+    QCOMPARE(m_model->sortRole(), QByteArray("size"));
+    QCOMPARE(m_model->sortOrder(), Qt::DescendingOrder);
+    QVERIFY(m_model->sortFoldersFirst());
+    QCOMPARE(itemsInModel(), QStringList() << "c" << "d" << "e" << "b" << "a");
+
+    // TODO: How shall the sorting by size be done if 'Sort Folders First' is disabled?
+
     // TODO: Sort by other roles; show/hide hidden files
 }