Tidied up table components

src/file/table/table-cell/table-cell.ts

@@ -0,0 +1,45 @@
+// http://officeopenxml.com/WPtableGrid.php
+import { Paragraph } from "file/paragraph";
+import { IXmlableObject, XmlComponent } from "file/xml-components";
+
+import { Table } from "../table";
+import { TableCellProperties } from "./table-cell-properties";
+
+export class TableCell extends XmlComponent {
+    private readonly properties: TableCellProperties;
+
+    constructor() {
+        super("w:tc");
+        this.properties = new TableCellProperties();
+        this.root.push(this.properties);
+    }
+
+    public addContent(content: Paragraph | Table): TableCell {
+        this.root.push(content);
+        return this;
+    }
+
+    public prepForXml(): IXmlableObject | undefined {
+        // Cells must end with a paragraph
+        const retval = super.prepForXml();
+        if (!retval) {
+            return undefined;
+        }
+
+        const content = retval["w:tc"];
+        if (!content[content.length - 1]["w:p"]) {
+            content.push(new Paragraph().prepForXml());
+        }
+        return retval;
+    }
+
+    public createParagraph(text?: string): Paragraph {
+        const para = new Paragraph(text);
+        this.addContent(para);
+        return para;
+    }
+
+    public get CellProperties(): TableCellProperties {
+        return this.properties;
+    }
+}