refactoring of cmaps, widgets, etc.

static/cmap/cmap-racket-wiki.js

@@ -1153,6 +1153,12 @@ import { CmapView } from "./cmap-view.js";
       return true;
     }
 
+    /** Replace the editor contents with a public CMap domain model. */
+    replaceModel(model) {
+      if (!(model instanceof CmapModel)) throw new TypeError("A CmapModel is required");
+      return this.replaceDocument(model.toDocument());
+    }
+
     setZoom(percent) {
       const next = Math.max(25, Math.min(300, Number(percent) || 100));
       this.zoomFactor = next / 100;
@@ -1866,6 +1872,19 @@ import { CmapView } from "./cmap-view.js";
       return this.synchronizeModel().toDocument();
     }
 
+    /** Return the synchronized domain model currently edited by this view. */
+    currentModel() {
+      this.saveCurrentContextLayout();
+      this.refreshConceptMapReferences();
+      return this.synchronizeModel();
+    }
+
+    /** Load a public CMap domain model into an empty editor. */
+    loadModel(model) {
+      if (!(model instanceof CmapModel)) throw new TypeError("A CmapModel is required");
+      this.loadDocument(model.toDocument());
+    }
+
     loadDocument(document = {}) {
       if (this.items.length || this.connectors.length || this.unresolvedConnectors.length) {
         throw new Error("A concept map document can only be loaded into an empty editor");