Update modeling panel when clicking 'view' on model editor (#2874)

Author: charisk

extensions/ql-vscode/src/model-editor/method-modeling/method-modeling-view-provider.ts

@@ -58,6 +58,7 @@ export class MethodModelingViewProvider
 
     this.webviewView = webviewView;
 
+    this.setInitialState(webviewView);
     this.registerToModelingStoreEvents();
   }
 
@@ -72,6 +73,18 @@ export class MethodModelingViewProvider
     }
   }
 
+  private setInitialState(webviewView: vscode.WebviewView): void {
+    const selectedMethod = this.modelingStore.getSelectedMethodDetails();
+    if (selectedMethod) {
+      void webviewView.webview.postMessage({
+        t: "setSelectedMethod",
+        method: selectedMethod.method,
+        modeledMethod: selectedMethod.modeledMethod,
+        isModified: selectedMethod.isModified,
+      });
+    }
+  }
+
   private async onMessage(msg: FromMethodModelingMessage): Promise<void> {
     switch (msg.t) {
       case "setModeledMethod": {

extensions/ql-vscode/src/model-editor/modeling-store.ts

@@ -264,6 +264,27 @@ export class ModelingStore extends DisposableObject {
     });
   }
 
+  public getSelectedMethodDetails() {
+    const dbState = this.getStateForActiveDb();
+    if (!dbState) {
+      throw new Error("No active state found in modeling store");
+    }
+
+    const selectedMethod = dbState.selectedMethod;
+    if (!selectedMethod) {
+      return undefined;
+    }
+
+    return {
+      method: selectedMethod,
+      usage: dbState.selectedUsage,
+      modeledMethod: dbState.modeledMethods[selectedMethod.signature],
+      isModified: dbState.modifiedMethodSignatures.has(
+        selectedMethod.signature,
+      ),
+    };
+  }
+
   private getState(databaseItem: DatabaseItem): DbModelingState {
     if (!this.state.has(databaseItem.databaseUri.toString())) {
       throw Error(