Introduce "isExpandable" role

The role is used to determine whether a directory can be expanded at all. This
is e.g. not the case if a directory has 0 items or the target-URL is different
from the item-URL.

The expansion toggle will get hidden if a directory is not expandable.

CCBUG: 288521

1 files changed, 1 insertions, 1 deletions

diff --git a/src/tests/kfileitemmodeltest.cpp b/src/tests/kfileitemmodeltest.cpp
index ac0c59952..86a2c04a4 100644
--- a/src/tests/kfileitemmodeltest.cpp
+++ b/src/tests/kfileitemmodeltest.cpp
@@ -372,7 +372,7 @@ void KFileItemModelTest::testExpandItems()
     // yields the correct result for "a/a/1" and "a/a-1/", whis is non-trivial because they share the
     // first three characters.
     QSet<QByteArray> modelRoles = m_model->roles();
-    modelRoles << "isExpanded" << "expansionLevel";
+    modelRoles << "isExpanded" << "isExpandable" << "expansionLevel";
     m_model->setRoles(modelRoles);
 
     QStringList files;