✨ Reuse already available shape-id on split-segments

Mainly removing possible race conditions from the event
implementation.

frontend/src/app/main/data/workspace/path/changes.cljs

@@ -70,20 +70,22 @@
                               (= (-> content last :command) :move-to))
                        (into [] (take (dec (count content)) content))
                        content)]
-         (-> state
-             (st/set-content content))))
+         (st/set-content state content)))
 
      ptk/WatchEvent
      (watch [it state _]
        (let [page-id     (:current-page-id state)
-             objects     (dsh/lookup-page-objects state page-id)
-             id          (dm/get-in state [:workspace-local :edition])
-             old-content (dm/get-in state [:workspace-local :edit-path id :old-content])
-             shape       (st/get-path state)]
+             local       (get state :workspace-local)
+             id          (get local :edition)
+             objects     (dsh/lookup-page-objects state page-id)]
 
-         (if (and (some? old-content) (some? (:id shape)))
-           (let [changes (generate-path-changes it objects page-id shape old-content (:content shape))]
-             (rx/of (dch/commit-changes changes)))
-           (rx/empty)))))))
+         ;; NOTE: we proceed only if the shape is present on the
+         ;; objects, if shape is a ephimeral drawing shape, we should
+         ;; do nothing
+         (when-let [shape (get objects id)]
+           (when-let [old-content (dm/get-in local [:edit-path id :old-content])]
+             (let [new-content (get shape :content)
+                   changes     (generate-path-changes it objects page-id shape old-content new-content)]
+               (rx/of (dch/commit-changes changes))))))))))
 
 

frontend/src/app/main/data/workspace/path/edition.cljs

@@ -8,7 +8,6 @@
   (:require
    [app.common.data :as d]
    [app.common.data.macros :as dm]
-   [app.common.files.helpers :as cfh]
    [app.common.geom.point :as gpt]
    [app.common.types.path :as path]
    [app.common.types.path.helpers :as path.helpers]
@@ -289,34 +288,34 @@
 
 (declare stop-path-edit)
 
+
 (defn start-path-edit
   [id]
   (ptk/reify ::start-path-edit
     ptk/UpdateEvent
     (update [_ state]
       (let [objects   (dsh/lookup-page-objects state)
-            edit-path (dm/get-in state [:workspace-local :edit-path id])
-            content   (st/get-path state :content)
-            state     (cond-> state
-                        (cfh/path-shape? objects id)
-                        (st/set-content (path/close-subpaths content)))]
+            shape     (get objects id)]
 
-        (cond-> state
-          (or (not edit-path)
-              (= :draw (:edit-mode edit-path)))
-          (assoc-in [:workspace-local :edit-path id] {:edit-mode :move
-                                                      :selected #{}
-                                                      :snap-toggled false})
-          (and (some? edit-path)
-               (= :move (:edit-mode edit-path)))
-          (assoc-in [:workspace-local :edit-path id :edit-mode] :draw))))
+        (-> state
+            (st/set-content (path/close-subpaths (:content shape)))
+            (update-in [:workspace-local :edit-path id]
+                       (fn [state]
+                         (let [state (if state
+                                       (if (= :move (:edit-mode state))
+                                         (assoc state :edit-mode :draw)
+                                         state)
+                                       {:edit-mode :move
+                                        :selected #{}
+                                        :snap-toggled false})]
+                           (assoc state :old-content (:content shape))))))))
 
     ptk/WatchEvent
     (watch [_ _ stream]
-      (let [stopper (->> stream
-                         (rx/filter #(let [type (ptk/type %)]
-                                       (= type ::dwe/clear-edition-mode)
-                                       (= type ::start-path-edit))))]
+      (let [stopper (rx/filter #(let [type (ptk/type %)]
+                                  (= type ::dwe/clear-edition-mode)
+                                  (= type ::start-path-edit))
+                               stream)]
         (rx/concat
          (rx/of (undo/start-path-undo))
          (->> stream
@@ -325,7 +324,8 @@
               (rx/map #(stop-path-edit id))
               (rx/take-until stopper)))))))
 
-(defn stop-path-edit [id]
+(defn stop-path-edit
+  [id]
   (ptk/reify ::stop-path-edit
     ptk/UpdateEvent
     (update [_ state]
@@ -335,13 +335,12 @@
     (watch [_ _ _]
       (rx/of (ptk/data-event :layout/update {:ids [id]})))))
 
-(defn split-segments
-  [{:keys [from-p to-p t]}]
+(defn- split-segments
+  [id {:keys [from-p to-p t]}]
   (ptk/reify ::split-segments
     ptk/UpdateEvent
     (update [_ state]
-      (let [id (st/get-path-id state)
-            content (st/get-path state :content)]
+      (let [content (st/get-path state :content)]
         (-> state
             (assoc-in [:workspace-local :edit-path id :old-content] content)
             (st/set-content (-> content
@@ -353,10 +352,10 @@
       (rx/of (changes/save-path-content {:preserve-move-to true})))))
 
 (defn create-node-at-position
-  [event]
+  [params]
   (ptk/reify ::create-node-at-position
     ptk/WatchEvent
     (watch [_ state _]
       (let [id (st/get-path-id state)]
         (rx/of (dwsh/update-shapes [id] path/convert-to-path)
-               (split-segments event))))))
+               (split-segments id params))))))