add dedicated codelens for copying and editing from read-only statement doc

package.json

@@ -646,6 +646,12 @@
         "icon": "$(output)",
         "category": "Confluent"
       },
+      {
+        "command": "confluent.statements.copyAndEdit",
+        "title": "Copy & Edit",
+        "icon": "$(copy)",
+        "category": "Confluent: Flink Statements"
+      },
       {
         "command": "confluent.statements.create",
         "icon": "$(cloud-upload)",
@@ -1540,6 +1546,10 @@
           "command": "confluent.showSidecarOutputChannel",
           "when": "true"
         },
+        {
+          "command": "confluent.statements.copyAndEdit",
+          "when": "false"
+        },
         {
           "command": "confluent.statements.create",
           "when": "false"

src/codelens/flinkSqlProvider.ts

@@ -9,6 +9,7 @@ import {
   Range,
   TextDocument,
 } from "vscode";
+import { FLINKSTATEMENT_URI_SCHEME } from "../documentProviders/flinkStatement";
 import { ccloudConnected, uriMetadataSet } from "../emitters";
 import { FLINK_CONFIG_COMPUTE_POOL, FLINK_CONFIG_DATABASE } from "../extensionSettings/constants";
 import { CCloudResourceLoader } from "../loaders";
@@ -130,6 +131,17 @@ export class FlinkSqlCodelensProvider extends DisposableCollection implements Co
     };
     const resetLens = new CodeLens(range, resetCommand);
 
+    if (document.uri.scheme === FLINKSTATEMENT_URI_SCHEME) {
+      const copyEditCommand: Command = {
+        title: "Copy & Edit",
+        command: "confluent.statements.copyAndEdit",
+        tooltip: "Copy the current statement to a new document and edit it",
+        arguments: [document.uri],
+      };
+      const copyEditLens = new CodeLens(range, copyEditCommand);
+      codeLenses.push(copyEditLens);
+    }
+
     if (computePool && database) {
       const submitCommand: Command = {
         title: "▶️ Submit Statement",

src/commands/flinkStatements.ts

@@ -376,6 +376,32 @@ export async function stopFlinkStatementCommand(statement: FlinkStatement): Prom
   void vscode.window.showInformationMessage(`Stopped statement ${statement.name}`);
 }
 
+export async function copyAndEditFlinkStatementCommand(uri: vscode.Uri): Promise<void> {
+  if (!(uri instanceof vscode.Uri) || uri.scheme !== FLINKSTATEMENT_URI_SCHEME) {
+    return;
+  }
+
+  const rm = ResourceManager.getInstance();
+  const uriMetadata: UriMetadata | undefined = await rm.getUriMetadata(uri);
+  if (!uriMetadata) {
+    // should never happen since this command is only available from existing statements,
+    // which always have resource-related metadata
+    return;
+  }
+
+  // grab the content of the read-only flinksql document
+  const document: vscode.TextDocument = await vscode.workspace.openTextDocument(uri);
+  const sqlStatement: string = document.getText();
+
+  // open a new editable document with the same content and relevant metadata
+  const editableDoc = await vscode.workspace.openTextDocument({
+    language: FLINK_SQL_LANGUAGE_ID,
+    content: sqlStatement,
+  });
+  await rm.setUriMetadata(editableDoc.uri, uriMetadata);
+  await vscode.window.showTextDocument(editableDoc, { preview: false });
+}
+
 export function registerFlinkStatementCommands(): vscode.Disposable[] {
   return [
     registerCommandWithLogging("confluent.statements.viewstatementsql", viewStatementSqlCommand),
@@ -384,5 +410,9 @@ export function registerFlinkStatementCommands(): vscode.Disposable[] {
     registerCommandWithLogging("confluent.flinkStatementResults", openFlinkStatementResultsView),
     registerCommandWithLogging("confluent.statements.delete", deleteFlinkStatementCommand),
     registerCommandWithLogging("confluent.statements.stop", stopFlinkStatementCommand),
+    registerCommandWithLogging(
+      "confluent.statements.copyAndEdit",
+      copyAndEditFlinkStatementCommand,
+    ),
   ];
 }