ViewProperties: Store view properties in extended file attributes

Existing settings are converted.

Works on most FS except FAT/exFAT which fallback to .directory files.

If the extended file attributes (in ADS in Windows) can't be saved, they are saved to file as before.

BUG: 322922

You can see file xattr using for instance for Unix filesystems:

getfattr -d /home/meven

2 files changed, 4 insertions, 2 deletions

diff --git a/src/settings/dolphin_directoryviewpropertysettings.kcfg b/src/settings/dolphin_directoryviewpropertysettings.kcfg
index f4d288369..e0c8aa1cc 100644
--- a/src/settings/dolphin_directoryviewpropertysettings.kcfg
+++ b/src/settings/dolphin_directoryviewpropertysettings.kcfg
@@ -24,7 +24,7 @@
         <entry name="ViewMode" type="Int" >
             <label context="@label">View Mode</label>
             <whatsthis context="@info:whatsthis">This option controls the style of the view. Currently supported values include icons (0), details (1) and column (2) views.</whatsthis>
-            <default>DolphinView::IconsView</default>
+            <default code="true">DolphinView::IconsView</default>
         </entry>
 
         <entry name="PreviewsShown" type="Bool" >
diff --git a/src/settings/viewmodes/generalviewsettingspage.cpp b/src/settings/viewmodes/generalviewsettingspage.cpp
index 51ab664f1..c518147dd 100644
--- a/src/settings/viewmodes/generalviewsettingspage.cpp
+++ b/src/settings/viewmodes/generalviewsettingspage.cpp
@@ -40,7 +40,9 @@ GeneralViewSettingsPage::GeneralViewSettingsPage(const QUrl &url, QWidget *paren
     globalViewPropsLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
 
     m_localViewProps = new QRadioButton(i18nc("@option:radio", "Remember display style for each folder"));
-    QLabel *localViewPropsLabel = new QLabel(i18nc("@info", "Dolphin will create a hidden .directory file in each folder you change view properties for."));
+    QLabel *localViewPropsLabel = new QLabel(i18nc("@info",
+                                                   "Dolphin will add file system metadata to folders you change view properties for. If that is not possible, "
+                                                   "a hidden .directory file is created instead."));
     localViewPropsLabel->setFont(QFontDatabase::systemFont(QFontDatabase::SmallestReadableFont));
     localViewPropsLabel->setWordWrap(true);
     localViewPropsLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);