Fixed bug for save functionality (#141)

In case of any changes during save request the state of exported shapes can be inconsistent. That leads to errors for future saves.

cvat/apps/engine/static/engine/js/annotationUI.js

@@ -100,7 +100,8 @@ function buildAnnotationUI(job, shapeData, loadJobEvent) {
     // Setup components
     let annotationParser = new AnnotationParser(job, window.cvat.labelsInfo);
 
-    let shapeCollectionModel = new ShapeCollectionModel().import(shapeData).updateHash();
+    let shapeCollectionModel = new ShapeCollectionModel().import(shapeData).updateExportedState();
+    shapeCollectionModel.confirmExportedState();
     let shapeCollectionController = new ShapeCollectionController(shapeCollectionModel);
     let shapeCollectionView = new ShapeCollectionView(shapeCollectionModel, shapeCollectionController);
 
@@ -690,6 +691,7 @@ function saveAnnotation(shapeCollectionModel, job) {
     });
 
     const exportedData = shapeCollectionModel.export();
+    shapeCollectionModel.updateExportedState();
     const annotationLogs = Logger.getLogs();
 
     const data = {
@@ -702,8 +704,7 @@ function saveAnnotation(shapeCollectionModel, job) {
 
     saveJobRequest(job.jobid, data, () => {
         // success
-        shapeCollectionModel.reset_state();
+        shapeCollectionModel.confirmExportedState();
-        shapeCollectionModel.updateHash();
         saveButton.text('Success!');
         setTimeout(() => {
             saveButton.prop('disabled', false);

cvat/apps/engine/static/engine/js/shapeCollection.js

@@ -53,6 +53,7 @@ class ShapeCollectionModel extends Listener {
         this._splitter = new ShapeSplitter();
         this._erased = false;
         this._initialShapes = {};
+        this._exportedShapes = {};
     }
 
     _nextIdx() {
@@ -239,8 +240,9 @@ class ShapeCollectionModel extends Listener {
         return this;
     }
 
-    reset_state() {
+    confirmExportedState() {
         this._erased = false;
+        this._initialShapes = this._exportedShapes;
     }
 
     export() {
@@ -349,8 +351,8 @@ class ShapeCollectionModel extends Listener {
         return exportData.pre_erase;
     }
 
-    updateHash() {
+    updateExportedState() {
-        this._initialShapes = {};
+        this._exportedShapes = {};
 
         if (this._erased) {
             return this;
@@ -358,7 +360,7 @@ class ShapeCollectionModel extends Listener {
 
         for (const shape of this._shapes) {
             if (!shape.removed) {
-                this._initialShapes[shape.id] = shape.export();
+                this._exportedShapes[shape.id] = shape.export();
             }
         }
         return this;