load user defined palettes

HISTORY.md

@@ -32,6 +32,7 @@
 ### 2021-07-22
 * store: serialize user defined block palettes
 * objects: enabled custom categories for the stage
+* store: load user defined palettes
 
 ### 2021-07-21
 * user defined custom block palettes, under construction

src/store.js

@@ -382,6 +382,10 @@ SnapSerializer.prototype.loadScene = function (xmlNode, remixID) {
     if (model.notes) {
         scene.notes = model.notes.contents;
     }
+    model.palette = model.scene.childNamed('palette');
+    if (model.palette) {
+        scene.customCategories = this.loadPalette(model.palette);
+    }
     model.globalVariables = model.scene.childNamed('variables');
 
     /* Stage */
@@ -1620,6 +1624,15 @@ SnapSerializer.prototype.loadColor = function (colorString) {
     );
 };
 
+SnapSerializer.prototype.loadPalette = function (model) {
+    // private
+    var p = new Map();
+    model.childrenNamed('category').forEach(node =>
+        p.set(node.attributes.name, this.loadColor(node.attributes.color))
+    );
+    return p;
+};
+
 // SnapSerializer XML-representation of objects:
 
 SnapSerializer.prototype.paletteToXML = function (aMap) {