feat: open folder will also select file on linux

.github/workflows/ubuntu.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-20.04
 
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v3
       - name: Get build dept.
         run: |
           sudo apt update
@@ -24,7 +24,7 @@ jobs:
         run: |
           cd build
           sudo apt install ./*.deb
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v3
         with:
           name: ubuntu-20.04-deb-package
           path: build/*.deb

CMakeLists.txt

@@ -17,7 +17,10 @@ set (QT_MINIMUM_VERSION "5.10")
 
 option (EXIV2_METADATA_SUPPORT "Better image metadata support via libexiv2" ON)
 
-find_package(Qt5 ${QT_MINIMUM_VERSION} CONFIG REQUIRED Widgets Svg LinguistTools)
+find_package(Qt5 ${QT_MINIMUM_VERSION} REQUIRED
+    COMPONENTS Widgets Svg LinguistTools
+    OPTIONAL_COMPONENTS DBus
+)
 
 if (EXIV2_METADATA_SUPPORT)
     find_package(LibExiv2)
@@ -113,6 +116,15 @@ if (LibExiv2_FOUND)
     )
 endif ()
 
+if (Qt5DBus_FOUND)
+    target_link_libraries (${EXE_NAME}
+        Qt5::DBus
+    )
+    target_compile_definitions(${EXE_NAME} PRIVATE
+        HAVE_QTDBUS
+    )
+endif()
+
 # Extra build settings
 if (WIN32)
     set_property (