Spin header into its own component

3 files changed, 84 insertions, 8 deletions

diff --git a/src/handlers/mod.rs b/src/handlers/mod.rs
index 235afc2..4e53195 100644
--- a/src/handlers/mod.rs
+++ b/src/handlers/mod.rs
@@ -15,5 +15,6 @@
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 pub mod export;
 pub mod file;
+pub mod preferences;
 pub mod view;
 pub mod zoom;
diff --git a/src/handlers/preferences.rs b/src/handlers/preferences.rs
new file mode 100644
index 0000000..f915898
--- /dev/null
+++ b/src/handlers/preferences.rs
@@ -0,0 +1,70 @@
+// Map, wardley map editor for linux
+// Copyright (C) 2026 Rubén Beltrán del Río
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+use relm4::prelude::*;
+use adw::prelude::*;
+
+use crate::file_registry;
+use crate::preferences::{PreferencesWindow, UserPreferences, storage, window};
+use crate::actions::Action;
+use crate::components::header::HeaderAction;
+
+use crate::AppModel;
+
+/// Shows the preferences window.
+pub fn show(model: &mut AppModel, sender: &ComponentSender<AppModel>) {
+    if model.preferences_window.is_none() {
+        let controller = PreferencesWindow::builder()
+            .transient_for(&model.window)
+            .launch(model.preferences.clone())
+            .forward(sender.input_sender(), |output| match output {
+                window::PreferencesOutput::PreferencesChanged(preferences) => {
+                    Action::PreferencesChanged(preferences)
+                }
+                window::PreferencesOutput::Closed => {
+                    Action::PreferencesWindowClosed
+                }
+            });
+        model.preferences_window = Some(controller);
+    }
+    if let Some(ref controller) = model.preferences_window {
+        controller.widget().present();
+    }
+}
+
+/// Closes the preferences window.
+pub fn close(model: &mut AppModel) {
+    model.preferences_window = None;
+}
+
+/// Reloads the preferences.
+pub fn reload(model: &mut AppModel) {
+    model.preferences = storage::load();
+    model.apply_preferences();
+    model.header.emit(HeaderAction::SetCustomStages(model.preferences.custom_stages.clone()));
+    model.header.emit(HeaderAction::SetCustomStages(model.preferences.custom_stages.clone()));
+    model.header.emit(HeaderAction::SetTemplates(model.preferences.map_templates.clone()));
+    model.update_image();
+}
+
+/// Updates preferences after they change.
+pub fn update(model: &mut AppModel, preferences: UserPreferences) {
+    model.preferences = preferences;
+    model.apply_preferences();
+    model.header.emit(HeaderAction::SetCustomStages(model.preferences.custom_stages.clone()));
+    model.header.emit(HeaderAction::SetTemplates(model.preferences.map_templates.clone()));
+    model.update_image();
+    file_registry::broadcast_to_all_windows(&Action::ReloadPreferences);
+}
diff --git a/src/handlers/view.rs b/src/handlers/view.rs
index 660f7b9..87c4172 100644
--- a/src/handlers/view.rs
+++ b/src/handlers/view.rs
@@ -13,9 +13,11 @@
 
 // You should have received a copy of the GNU Affero General Public License
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
-use relm4::gtk;
+use relm4::prelude::*;
+use crate::components::header::HeaderAction;
 
 use crate::AppModel;
+use wmap_renderer::StageType;
 
 /// Toggles between horizontal and vertical layout orientation.
 pub fn change_orientation(model: &mut AppModel) {
@@ -23,14 +25,17 @@ pub fn change_orientation(model: &mut AppModel) {
         gtk::Orientation::Horizontal => gtk::Orientation::Vertical,
         _ => gtk::Orientation::Horizontal,
     };
+    model.header.emit(HeaderAction::SetLayoutOrientation(model.orientation));
 }
 
 /// Updates the selected stage type from dropdown selection.
-pub fn stage_type_selected(model: &mut AppModel, index: usize) {
-    if index < model.available_stage_types.len()
-        && let Some(stage_type) = model.available_stage_types.get(index)
-    {
-        model.stage_type = stage_type.clone();
-        model.update_image();
-    }
+pub fn stage_type_selected(model: &mut AppModel, stage_type: StageType) {
+    model.stage_type = stage_type;
+    model.update_image();
+}
+
+/// Updates the selected stage type from dropdown selection.
+pub fn change_horizontal_layout(model: &mut AppModel, is_enabled: bool) {
+    model.horizontal_layout_enabled = is_enabled;
+    model.header.emit(HeaderAction::SetHorizontalLayoutEnabled(is_enabled));
 }