Remove need for polkit, launch any ArchUpdater update through terminal

ArchUpdater: rely on `TERMINAL` environment variable
README: Add explanation for the `TERMINAL` environment variable

Modules/SettingsPanel/Tabs/WallpaperSelectorTab.qml

@@ -23,12 +23,13 @@ ColumnLayout {
     Layout.fillWidth: true
     Layout.preferredHeight: 140 * scaling
     radius: Style.radiusM * scaling
-    color: Color.mSecondary
+    color: Color.mPrimary
 
     NImageRounded {
+      id: currentWallpaperImage
       anchors.fill: parent
       anchors.margins: Style.marginXS * scaling
-      imagePath: WallpaperService.getWallpaper(screen.name)
+      imagePath: WallpaperService.currentWallpaper
       fallbackIcon: "image"
       imageRadius: Style.radiusM * scaling
     }
@@ -61,44 +62,41 @@ ColumnLayout {
         wrapMode: Text.WordWrap
         Layout.fillWidth: true
       }
+
+      NText {
+        text: Settings.data.wallpaper.swww.enabled ? "Wallpapers will change with " + Settings.data.wallpaper.swww.transitionType
+                                                     + " transition." : "Wallpapers will change instantly."
+        color: Color.mOnSurface
+        font.pointSize: Style.fontSizeXS * scaling
+        visible: Settings.data.wallpaper.swww.enabled
+      }
     }
 
     NIconButton {
       icon: "refresh"
       tooltipText: "Refresh wallpaper list"
       onClicked: {
-        WallpaperService.refreshWallpapersList()
+        WallpaperService.listWallpapers()
       }
-      Layout.alignment: Qt.AlignVCenter | Qt.AlignRight
+      Layout.alignment: Qt.AlignTop | Qt.AlignRight
     }
   }
 
-  property list<string> wallpapersList: WallpaperService.getWallpapersList(screen.name)
-
-  NToggle {
-    label: "Assign selection to all monitors"
-    description: "Set selected wallpaper on all monitors at once."
-    checked: Settings.data.wallpaper.setWallpaperOnAllMonitors
-    onToggled: checked => Settings.data.wallpaper.setWallpaperOnAllMonitors = checked
-    visible: (wallpapersList.length > 0)
-  }
-
   // Wallpaper grid container
   Item {
-    visible: !WallpaperService.scanning
     Layout.fillWidth: true
     Layout.preferredHeight: {
-      return Math.ceil(wallpapersList.length / wallpaperGridView.columns) * wallpaperGridView.cellHeight
+      return Math.ceil(WallpaperService.wallpaperList.length / wallpaperGridView.columns) * wallpaperGridView.cellHeight
     }
 
     GridView {
       id: wallpaperGridView
       anchors.fill: parent
       clip: true
-      model: wallpapersList
+      model: WallpaperService.wallpaperList
 
       boundsBehavior: Flickable.StopAtBounds
-      flickableDirection: Flickable.VerticalFlick
+      flickableDirection: Flickable.AutoFlickDirection
       interactive: false
 
       property int columns: 5
@@ -116,7 +114,7 @@ ColumnLayout {
         id: wallpaperItem
 
         property string wallpaperPath: modelData
-        property bool isSelected: wallpaperPath === WallpaperService.getWallpaper(screen.name)
+        property bool isSelected: wallpaperPath === WallpaperService.currentWallpaper
 
         width: wallpaperGridView.itemSize
         height: Math.floor(wallpaperGridView.itemSize * 0.67)
@@ -181,65 +179,46 @@ ColumnLayout {
           acceptedButtons: Qt.LeftButton
           hoverEnabled: true
           onClicked: {
-            if (Settings.data.wallpaper.setWallpaperOnAllMonitors) {
-              WallpaperService.changeWallpaper(undefined, wallpaperPath)
-            } else {
-              WallpaperService.changeWallpaper(screen.name, wallpaperPath)
-            }
+            WallpaperService.changeWallpaper(wallpaperPath)
           }
         }
       }
     }
-  }
 
-  // Empty state
-  Rectangle {
-    color: Color.mSurface
-    radius: Style.radiusM * scaling
-    border.color: Color.mOutline
-    border.width: Math.max(1, Style.borderS * scaling)
-    visible: wallpapersList.length === 0 || WallpaperService.scanning
-    Layout.fillWidth: true
-    Layout.preferredHeight: 130 * scaling
-
-    ColumnLayout {
+    // Empty state
+    Rectangle {
       anchors.fill: parent
-      visible: WallpaperService.scanning
-      NBusyIndicator {
-        Layout.alignment: Qt.AlignHCenter | Qt.AlignVCenter
-      }
-    }
+      color: Color.mSurface
+      radius: Style.radiusM * scaling
+      border.color: Color.mOutline
+      border.width: Math.max(1, Style.borderS * scaling)
+      visible: WallpaperService.wallpaperList.length === 0 && !WallpaperService.scanning
 
-    ColumnLayout {
-      anchors.fill: parent
-      visible: wallpapersList.length === 0 && !WallpaperService.scanning
-      Item {
-        Layout.fillHeight: true
-      }
+      ColumnLayout {
+        anchors.centerIn: parent
+        spacing: Style.marginM * scaling
 
-      NIcon {
-        text: "folder_open"
-        font.pointSize: Style.fontSizeXL * scaling
-        color: Color.mOnSurface
-        Layout.alignment: Qt.AlignHCenter
-      }
+        NIcon {
+          text: "folder_open"
+          font.pointSize: Style.fontSizeL * scaling
+          color: Color.mOnSurface
+          Layout.alignment: Qt.AlignHCenter
+        }
 
-      NText {
-        text: "No wallpaper found."
-        color: Color.mOnSurface
-        font.weight: Style.fontWeightBold
-        Layout.alignment: Qt.AlignHCenter
-      }
+        NText {
+          text: "No wallpapers found"
+          color: Color.mOnSurface
+          font.weight: Style.fontWeightBold
+          Layout.alignment: Qt.AlignHCenter
+        }
 
-      NText {
-        text: "Make sure your wallpaper directory is configured and contains image files."
-        color: Color.mOnSurfaceVariant
-        wrapMode: Text.WordWrap
-        Layout.alignment: Qt.AlignHCenter
-      }
-
-      Item {
-        Layout.fillHeight: true
+        NText {
+          text: "Make sure your wallpaper directory is configured and contains image files."
+          color: Color.mOnSurface
+          wrapMode: Text.WordWrap
+          horizontalAlignment: Text.AlignHCenter
+          Layout.preferredWidth: Style.sliderWidth * 1.5 * scaling
+        }
       }
     }
   }