ability to specify textDirection for section

src/file/document/body/section-properties/properties/index.ts

@@ -7,6 +7,7 @@ export * from "./page-number";
 export * from "./page-borders";
 export * from "./page-margin";
 export * from "./page-borders";
+export * from "./page-text-direction";
 export * from "./line-number";
 export * from "./section-type";
 export * from "./header-footer-reference";

src/file/document/body/section-properties/properties/page-text-direction.spec.ts

@@ -0,0 +1,22 @@
+import { expect } from "chai";
+
+import { Formatter } from "export/formatter";
+import { PageTDirection, PageTextDirection } from "./page-text-direction";
+
+describe("PageTextDirection", () => {
+    describe("#constructor()", () => {
+        it("should set the direction of the text flow to top-to-bottom-right-to-left", () => {
+            const textDirection = new PageTDirection(PageTextDirection.TOP_TO_BOTTOM_RIGHT_TO_LEFT);
+
+            const tree = new Formatter().format(textDirection);
+
+            expect(tree).to.deep.equal({
+                "w:textDirection": {
+                    _attr: {
+                        "w:val": "tbRl",
+                    },
+                },
+            });
+        });
+    });
+});

src/file/document/body/section-properties/properties/page-text-direction.ts

@@ -0,0 +1,22 @@
+import { XmlAttributeComponent, XmlComponent } from "file/xml-components";
+
+export enum PageTextDirection {
+    LEFT_TO_RIGHT_TOP_TO_BOTTOM = "lrTb",
+    TOP_TO_BOTTOM_RIGHT_TO_LEFT = "tbRl",
+}
+
+class PageTextDirectionAttributes extends XmlAttributeComponent<{ readonly val: PageTextDirection }> {
+    protected readonly xmlKeys = { val: "w:val" };
+}
+
+export class PageTDirection extends XmlComponent {
+    constructor(value: PageTextDirection) {
+        super("w:textDirection");
+
+        this.root.push(
+            new PageTextDirectionAttributes({
+                val: value,
+            }),
+        );
+    }
+}