editing: Only enable editing action if available

src/widgets/edit_window.rs

@@ -168,6 +168,12 @@ glib::wrapper! {
 }
 
 impl LpEditWindow {
+    pub const REQUIRED_OPERATIONS: &[glycin::OperationId] = &[
+        glycin::OperationId::Clip,
+        glycin::OperationId::MirrorHorizontally,
+        glycin::OperationId::Rotate,
+    ];
+
     pub fn new(image: LpImage) -> Self {
         glib::Object::builder()
             .property("original_image", image)

src/widgets/image.rs

@@ -160,6 +160,9 @@ mod imp {
         pub(super) fixed_background_color: RefCell<Option<gdk::RGBA>>,
         /// Animations disabled
         pub(super) still: Cell<bool>,
+        /// Editor can be used on image
+        #[property(get)]
+        pub(super) editable: Cell<bool>,
 
         /// Track changes to this image
         pub(super) file_monitor: RefCell<Option<gio::FileMonitor>>,

src/widgets/image/loading.rs

@@ -18,6 +18,8 @@
 
 use decoder::DecoderError;
 
+use crate::widgets::LpEditWindow;
+
 use super::*;
 
 impl imp::LpImage {
@@ -284,6 +286,25 @@ impl imp::LpImage {
             }
         }
     }
+
+    async fn check_editable(&self) {
+        let obj = self.obj();
+
+        if let Some(mime_type) = dbg!(obj.metadata().mime_type()) {
+            if let Ok(supported_formats) = dbg!(glycin::config::Config::cached()
+                .await
+                .editor(&mime_type.as_str().into()))
+            {
+                if dbg!(LpEditWindow::REQUIRED_OPERATIONS
+                    .iter()
+                    .all(|x| supported_formats.operations.contains(x)))
+                {
+                    self.editable.set(true);
+                    obj.notify_editable();
+                }
+            }
+        };
+    }
 }
 
 impl LpImage {
@@ -338,5 +359,7 @@ impl LpImage {
         });
 
         imp.decoder.replace(Some(Arc::new(decoder)));
+
+        imp.check_editable().await;
     }
 }

src/widgets/image_window.rs

@@ -767,6 +767,14 @@ impl LpImageWindow {
         for action in ACTIONS_CURRENT {
             self.action_set_enabled(action, enabled_current);
         }
+
+        // Editing related actions
+        let enable_editing = self
+            .imp()
+            .image_view
+            .current_image()
+            .map_or(false, |x| x.editable());
+        self.action_set_enabled(&Action::Edit, enable_editing);
     }
 
     /// Handles change in image and availability of images
@@ -783,7 +791,7 @@ impl LpImageWindow {
         self.update_title();
 
         // Properties view
-        let current_image = current_page.as_ref().map(|x| x.image());
+        let current_image: Option<LpImage> = current_page.as_ref().map(|x| x.image());
         imp.properties_view.set_image(current_image.as_ref());
 
         let has_image = current_page.is_some();