add rtl mode

src/file/paragraph/run/formatting.ts

@@ -123,3 +123,14 @@ export class Size extends XmlComponent {
         );
     }
 }
+
+export class RTL extends XmlComponent {
+    constructor() {
+        super("w:rtl");
+        this.root.push(
+            new Attributes({
+                val: true,
+            }),
+        );
+    }
+}

src/file/paragraph/run/run.spec.ts

@@ -139,6 +139,16 @@ describe("Run", () => {
         });
     });
 
+    describe("#rtl", () => {
+        it("should set the run to the RTL mode", () => {
+            run.rtl();
+            const tree = new Formatter().format(run);
+            expect(tree).to.deep.equal({
+                "w:r": [{ "w:rPr": [{ "w:rtl": [{ _attr: { "w:val": true } }]}]}],
+            });
+        });
+    });
+
     describe("#style", () => {
         it("should set the style to the given styleId", () => {
             run.style("myRunStyle");

src/file/paragraph/run/run.ts

@@ -1,7 +1,7 @@
 // http://officeopenxml.com/WPtext.php
 import { Break } from "./break";
 import { Caps, SmallCaps } from "./caps";
-import { Bold, Color, DoubleStrike, Italics, Size, Strike } from "./formatting";
+import { Bold, Color, DoubleStrike, Italics, Size, RTL, Strike } from "./formatting";
 import { Begin, End, Page, Separate } from "./page-number";
 import { RunProperties } from "./properties";
 import { RunFonts } from "./run-fonts";
@@ -46,6 +46,11 @@ export class Run extends XmlComponent {
         return this;
     }
 
+    public rtl(): Run {
+        this.properties.push(new RTL());
+        return this;
+    }
+
     public break(): Run {
         this.root.splice(1, 0, new Break());
         return this;