2 files changed, 85 insertions, 0 deletions
diff --git a/src/window/mod.rs b/src/window/mod.rs
new file mode 100644
index 00000000..fd494b42
--- /dev/null
+++ b/src/window/mod.rs
@@ -0,0 +1,24 @@
+use crate::layout::workspace::ColumnWidth;
+
+pub mod unmapped;
+pub use unmapped::{InitialConfigureState, Unmapped};
+
+/// Rules fully resolved for a window.
+#[derive(Debug, Default)]
+pub struct ResolvedWindowRules {
+    /// Default width for this window.
+    ///
+    /// - `None`: unset (global default should be used).
+    /// - `Some(None)`: set to empty (window picks its own width).
+    /// - `Some(Some(width))`: set to a particular width.
+    pub default_width: Option<Option<ColumnWidth>>,
+
+    /// Output to open this window on.
+    pub open_on_output: Option<String>,
+
+    /// Whether the window should open full-width.
+    pub open_maximized: Option<bool>,
+
+    /// Whether the window should open fullscreen.
+    pub open_fullscreen: Option<bool>,
+}
diff --git a/src/window/unmapped.rs b/src/window/unmapped.rs
new file mode 100644
index 00000000..51e37e07
--- /dev/null
+++ b/src/window/unmapped.rs
@@ -0,0 +1,61 @@
+use smithay::desktop::Window;
+use smithay::output::Output;
+
+use super::ResolvedWindowRules;
+use crate::layout::workspace::ColumnWidth;
+
+#[derive(Debug)]
+pub struct Unmapped {
+    pub window: Window,
+    pub state: InitialConfigureState,
+}
+
+#[derive(Debug)]
+pub enum InitialConfigureState {
+    /// The window has not been initially configured yet.
+    NotConfigured {
+        /// Whether the window requested to be fullscreened, and the requested output, if any.
+        wants_fullscreen: Option<Option<Output>>,
+    },
+    /// The window has been configured.
+    Configured {
+        /// Up-to-date rules.
+        ///
+        /// We start tracking window rules when sending the initial configure, since they don't
+        /// affect anything before that.
+        rules: ResolvedWindowRules,
+
+        /// Resolved default width for this window.
+        ///
+        /// `None` means that the window will pick its own width.
+        width: Option<ColumnWidth>,
+
+        /// Whether the window should open full-width.
+        is_full_width: bool,
+
+        /// Output to open this window on.
+        ///
+        /// This can be `None` in cases like:
+        ///
+        /// - There are no outputs connected.
+        /// - This is a dialog with a parent, and there was no explicit output set, so this dialog
+        ///   should fetch the parent's current output again upon mapping.
+        output: Option<Output>,
+    },
+}
+
+impl Unmapped {
+    /// Wraps a newly created window that hasn't been initially configured yet.
+    pub fn new(window: Window) -> Self {
+        Self {
+            window,
+            state: InitialConfigureState::NotConfigured {
+                wants_fullscreen: None,
+            },
+        }
+    }
+
+    pub fn needs_initial_configure(&self) -> bool {
+        matches!(self.state, InitialConfigureState::NotConfigured { .. })
+    }
+}