refactored out xml components into multiple files

ts/docx/xml-components/property.ts

@@ -0,0 +1,57 @@
+import {XmlComponent} from "./"
+import {ParagraphProperties} from "../paragraph/properties";
+import {RunProperties} from "../run/properties";
+
+export class ParagraphPropertyXmlComponent extends XmlComponent {
+    private paragraphProperties: ParagraphProperties;
+
+    constructor(rootKey) {
+        super(rootKey);
+        this.paragraphProperties = new ParagraphProperties();
+        this.root.push(this.paragraphProperties);
+    }
+
+    clearVariables(): void {
+        this.paragraphProperties.clearVariables();
+
+        delete this.paragraphProperties;
+    }
+}
+
+export class RunPropertyXmlComponent extends XmlComponent {
+    private runProperties: RunProperties;
+
+    constructor(rootKey) {
+        super(rootKey);
+        this.runProperties = new RunProperties();
+        this.root.push(this.runProperties);
+    }
+
+    clearVariables(): void {
+        this.runProperties.clearVariables();
+
+        delete this.runProperties;
+    }
+}
+
+export class MultiPropertyXmlComponent extends XmlComponent {
+    private runProperties: RunProperties;
+    private paragraphProperties: ParagraphProperties;
+
+    constructor(rootKey) {
+        super(rootKey);
+        this.runProperties = new RunProperties();
+        this.root.push(this.runProperties);
+        
+        this.paragraphProperties = new ParagraphProperties();
+        this.root.push(this.paragraphProperties);
+    }
+
+    clearVariables(): void {
+        this.runProperties.clearVariables();
+        this.paragraphProperties.clearVariables();
+
+        delete this.runProperties;
+        delete this.paragraphProperties;
+    }
+}