Codelens for referenced grammars

See eclipse-lemminx/lemminx#1092

Signed-off-by: azerr <azerr@redhat.com>

Author: angelozerr

src/commands/commandConstants.ts

@@ -37,6 +37,13 @@ export namespace ClientCommandConstants {
    */
   export const OPEN_SETTINGS = 'xml.open.settings';
 
+    /**
+   * Open settings command
+   *
+   * A `settingId: string` parameter can be optionally provided
+   */
+  export const OPEN_URI = 'xml.open.uri';
+
   /**
    * Render markdown string to html string
    */

src/commands/registerCommands.ts

@@ -13,6 +13,7 @@ import { ClientCommandConstants, ServerCommandConstants } from "./commandConstan
 export function registerClientOnlyCommands(context: ExtensionContext) {
   registerDocsCommands(context);
   registerOpenSettingsCommand(context);
+  registerOpenUriCommand(context);
 }
 
 /**
@@ -41,7 +42,8 @@ export async function registerClientServerCommands(context: ExtensionContext, la
     };
     if (token) {
       return languageClient.sendRequest(ExecuteCommandRequest.type, params, token);
-    } else {
+    }
+else {
       return languageClient.sendRequest(ExecuteCommandRequest.type, params);
     }
   }));
@@ -81,6 +83,17 @@ function registerOpenSettingsCommand(context: ExtensionContext) {
   }));
 }
 
+/**
+ * Registers a command that opens the settings page to a given setting
+ *
+ * @param context the extension context
+ */
+ function registerOpenUriCommand(context: ExtensionContext) {
+  context.subscriptions.push(commands.registerCommand(ClientCommandConstants.OPEN_URI, async (uri?: string) => {
+    commands.executeCommand('vscode.open', Uri.parse(uri));
+  }));
+}
+
 /**
  * Register commands used for code lens "references"
  *