Add "addNewLineAfterSelfClosingTag" Option

package.json

@@ -78,6 +78,12 @@
             "title": "XML Tools Configuration",
             "type": "object",
             "properties": {
+                "xmlTools.addNewLineAfterSelfClosingTag": {
+                    "type": "boolean",
+                    "default": false,
+                    "description": "Adds a newline after self-closing XML tags on format.",
+                    "scope": "resource"
+                },
                 "xmlTools.enableXmlTreeView": {
                     "type": "boolean",
                     "default": true,

src/common/configuration.ts

@@ -43,6 +43,10 @@ export class Configuration {
         return this._getForWindow<string>("xqueryExecutionInputSearchPattern");
     }
 
+    static addNewLineAfterSelfClosingTag(resource: Uri): boolean {
+        return this._getForResource<boolean>("addNewLineAfterSelfClosingTag", resource);
+    }
+
     static enforcePrettySelfClosingTagOnFormat(resource: Uri): boolean {
         return this._getForResource<boolean>("enforcePrettySelfClosingTagOnFormat", resource);
     }

src/formatting/xml-formatting-options.ts

@@ -1,7 +1,6 @@
 import { EndOfLine, FormattingOptions, TextDocument } from "vscode";
 
 import { Configuration } from "../common";
-import * as constants from "../constants";
 
 export interface XmlFormattingOptions {
     editorOptions: FormattingOptions;
@@ -11,6 +10,7 @@ export interface XmlFormattingOptions {
     splitAttributesOnFormat: boolean;
     splitXmlnsOnFormat: boolean;
     initialIndentLevel?: number;
+    addNewLineAfterSelfClosingTag: boolean;
 }
 
 export class XmlFormattingOptionsFactory {
@@ -22,7 +22,8 @@ export class XmlFormattingOptionsFactory {
             removeCommentsOnMinify: Configuration.removeCommentsOnMinify(document.uri),
             splitAttributesOnFormat: Configuration.splitAttributesOnFormat(document.uri),
             splitXmlnsOnFormat: Configuration.splitXmlnsOnFormat(document.uri),
-            initialIndentLevel: 0
+            initialIndentLevel: 0,
+            addNewLineAfterSelfClosingTag: Configuration.addNewLineAfterSelfClosingTag(document.uri)
         };
     }
 }

src/test/extension.test.ts

@@ -21,7 +21,9 @@ describe("V2XmlFormatter", () => {
             newLine: "\r\n",
             removeCommentsOnMinify: false,
             splitAttributesOnFormat: false,
-            splitXmlnsOnFormat: true
+            splitXmlnsOnFormat: true,
+            addNewLineAfterSelfClosingTag: false
+
         };
 
         it("should handle basic XML", () => {
@@ -97,7 +99,11 @@ describe("V2XmlFormatter", () => {
         });
 
         it("should optionally add line break after self-closing tag", () => {
+            options.addNewLineAfterSelfClosingTag = true;
+
             testFormatter(xmlFormatter, options, "issue-235");
+
+            options.addNewLineAfterSelfClosingTag = false;
         });
     });