added #style method to runs

ts/docx/run/index.ts

@@ -5,6 +5,7 @@ import { RunProperties } from "./properties";
 import { RunFonts } from "./run-fonts";
 import { SubScript, SuperScript } from "./script";
 import { DoubleStrike, Strike } from "./strike";
+import { Style } from "./style";
 import { Tab } from "./tab";
 import { Underline } from "./underline";
 
@@ -88,4 +89,9 @@ export class Run extends XmlComponent {
         this.properties.push(new RunFonts(fontName));
         return this;
     }
+
+    public style(styleId: string): Run {
+        this.properties.push(new Style(styleId));
+        return this;
+    }
 }

ts/docx/run/style.ts

@@ -0,0 +1,13 @@
+import { XmlAttributeComponent, XmlComponent } from "../xml-components";
+
+class StyleAttributes extends XmlAttributeComponent<{val: string}> {
+    protected xmlKeys = {val: "w:val"};
+}
+
+export class Style extends XmlComponent {
+
+    constructor(styleId: string) {
+        super("w:rStyle");
+        this.root.push(new StyleAttributes({val: styleId}));
+    }
+}

ts/tests/docx/run/runTest.ts

@@ -141,4 +141,16 @@ describe("Run", () => {
             });
         });
     });
+
+    describe("#style", () => {
+        it("should set the style to the given styleId", () => {
+            run.style("myRunStyle");
+            const tree = new Formatter().format(run);
+            expect(tree).to.deep.equal({
+                "w:r": [
+                    {"w:rPr": [{"w:rStyle": [{_attr: {"w:val": "myRunStyle"}}]}]},
+                ],
+            });
+        });
+    });
 });