Tabs: ensure to have folder icons for remote folders

KIO::iconForUrl relies on filename to find the icon for remote files.
Appending / at the end of the filename allows it to interpret it as
a folder.

This causes inconsistent tab icons.

To reproduce:

Open in a tab a url on a smb or sftp folder, i.e sftp:/my-server/photos

Before:
Icon is a cloud.

After:
Icon is a folder

Previously a folder icon could be presented if the tab was first opened
with a url with a trailing /

2 files changed, 8 insertions, 3 deletions

diff --git a/src/dolphintabwidget.cpp b/src/dolphintabwidget.cpp
index cfb695e7d..0e7012d3b 100644
--- a/src/dolphintabwidget.cpp
+++ b/src/dolphintabwidget.cpp
@@ -383,7 +383,9 @@ void DolphinTabWidget::tabUrlChanged(const QUrl& url)
         tabBar()->setTabText(index, tabName(tabPageAt(index)));
         tabBar()->setTabToolTip(index, url.toDisplayString(QUrl::PreferLocalFile));
         if (tabBar()->isVisible()) {
-            tabBar()->setTabIcon(index, QIcon::fromTheme(KIO::iconNameForUrl(url)));
+            // ensure the path url ends with a slash to have proper folder icon for remote folders
+            const QUrl pathUrl = QUrl(url.adjusted(QUrl::StripTrailingSlash).toString(QUrl::FullyEncoded).append("/"));
+            tabBar()->setTabIcon(index, QIcon::fromTheme(KIO::iconNameForUrl(pathUrl)));
         } else {
             // Mark as dirty, actually load once the tab bar actually gets shown
             tabBar()->setTabIcon(index, QIcon());
@@ -427,7 +429,9 @@ void DolphinTabWidget::tabInserted(int index)
         for (int i = 0; i < count(); ++i) {
             const QUrl url = tabPageAt(i)->activeViewContainer()->url();
             if (tabBar()->tabIcon(i).isNull()) {
-                tabBar()->setTabIcon(i, QIcon::fromTheme(KIO::iconNameForUrl(url)));
+                // ensure the path url ends with a slash to have proper folder icon for remote folders
+                const QUrl pathUrl = QUrl(url.adjusted(QUrl::StripTrailingSlash).toString(QUrl::FullyEncoded).append("/"));
+                tabBar()->setTabIcon(i, QIcon::fromTheme(KIO::iconNameForUrl(pathUrl)));
             }
             if (tabBar()->tabToolTip(i).isEmpty()) {
                 tabBar()->setTabToolTip(index, url.toDisplayString(QUrl::PreferLocalFile));
diff --git a/src/tests/dolphinmainwindowtest.cpp b/src/tests/dolphinmainwindowtest.cpp
index 40f8f6bcd..b40d3dbbf 100644
--- a/src/tests/dolphinmainwindowtest.cpp
+++ b/src/tests/dolphinmainwindowtest.cpp
@@ -211,7 +211,8 @@ void DolphinMainWindowTest::testOpenInNewTabTitle()
     QCOMPARE(tabWidget->count(), 2);
     QVERIFY(tabWidget->tabText(0) != tabWidget->tabText(1));
     if (!tabWidget->tabIcon(0).isNull() && !tabWidget->tabIcon(1).isNull()) {
-        QVERIFY(tabWidget->tabIcon(0).name() != tabWidget->tabIcon(1).name());
+        QCOMPARE(QStringLiteral("inode-directory"), tabWidget->tabIcon(0).name());
+        QCOMPARE(QStringLiteral("inode-directory"), tabWidget->tabIcon(1).name());
     }
 }