shell: empty (un)minimize handlers

src/shell/mod.rs

@@ -230,6 +230,7 @@ pub struct WorkspaceSet {
     output: Output,
     theme: cosmic::Theme,
     pub sticky_layer: FloatingLayout,
+    pub minimized_windows: Vec<MinimizedWindow>,
     pub workspaces: Vec<Workspace>,
 }
 
@@ -351,6 +352,7 @@ impl WorkspaceSet {
             tiling_enabled,
             theme,
             sticky_layer,
+            minimized_windows: Vec::new(),
             workspaces,
             output: output.clone(),
         }
@@ -978,6 +980,7 @@ impl Shell {
             [
                 WmCapabilities::Fullscreen,
                 WmCapabilities::Maximize,
+                WmCapabilities::Minimize,
                 WmCapabilities::WindowMenu,
             ],
         );
@@ -2618,6 +2621,10 @@ impl Shell {
         }
     }
 
+    pub fn minimize_request(&mut self, mapped: &CosmicMapped) {}
+
+    pub fn unminimize_request(&mut self, mapped: &CosmicMapped) {}
+
     pub fn maximize_request(&mut self, mapped: &CosmicMapped) {
         let (original_layer, floating_layer, original_geometry) = if let Some(set) = self
             .workspaces

src/shell/workspace.rs

@@ -77,6 +77,7 @@ pub struct Workspace {
     pub output: Output,
     pub tiling_layer: TilingLayout,
     pub floating_layer: FloatingLayout,
+    pub minimized_windows: Vec<MinimizedWindow>,
     pub tiling_enabled: bool,
     pub fullscreen: Option<FullscreenSurface>,
 
@@ -90,6 +91,15 @@ pub struct Workspace {
     pub dirty: AtomicBool,
 }
 
+#[derive(Debug)]
+pub struct MinimizedWindow {
+    pub window: CosmicMapped,
+    pub previous_layer: ManagedLayer,
+    pub was_fullscreen: Option<FullscreenSurface>,
+    pub was_maximized: bool,
+    pub tiling_state: Option<(id_tree::NodeId, Rectangle<i32, Logical>)>,
+}
+
 #[derive(Debug, Clone)]
 pub struct FullscreenSurface {
     pub surface: CosmicSurface,
@@ -222,6 +232,7 @@ impl Workspace {
             tiling_layer,
             floating_layer,
             tiling_enabled,
+            minimized_windows: Vec::new(),
             fullscreen: None,
             handle,
             focus_stack: FocusStacks::default(),