Created classes and methods needed to create Sequential Identifiers

demo/demo33.ts

@@ -0,0 +1,22 @@
+// Sequential Captions
+// Import from 'docx' rather than '../build' if you install from npm
+import * as fs from "fs";
+import { Document, Packer, Paragraph, TextRun } from "../build";
+
+const doc = new Document();
+
+const paragraph = new Paragraph("Hello World 1->").addSequentialIdentifier("Caption").addRun(new TextRun(" text after sequencial caption 2->")).addSequentialIdentifier("Caption");
+const paragraph2 = new Paragraph("Hello World 1->").addSequentialIdentifier("Label").addRun(new TextRun(" text after sequencial caption 2->")).addSequentialIdentifier("Label");
+const paragraph3 = new Paragraph("Hello World 1->").addSequentialIdentifier("Another").addRun(new TextRun(" text after sequencial caption 3->")).addSequentialIdentifier("Label");
+const paragraph4 = new Paragraph("Hello World 2->").addSequentialIdentifier("Another").addRun(new TextRun(" text after sequencial caption 4->")).addSequentialIdentifier("Label");
+
+doc.addParagraph(paragraph);
+doc.addParagraph(paragraph2);
+doc.addParagraph(paragraph3);
+doc.addParagraph(paragraph4);
+
+const packer = new Packer();
+
+packer.toBuffer(doc).then((buffer) => {
+    fs.writeFileSync("My Document.docx", buffer);
+});

src/file/paragraph/paragraph.ts

@@ -16,7 +16,7 @@ import { CenterTabStop, LeaderType, LeftTabStop, MaxRightTabStop, RightTabStop }
 import { NumberProperties } from "./formatting/unordered-list";
 import { Bookmark, Hyperlink } from "./links";
 import { ParagraphProperties } from "./properties";
-import { PictureRun, Run, TextRun } from "./run";
+import { PictureRun, Run, SequentialIdentifier, TextRun } from "./run";
 
 export class Paragraph extends XmlComponent {
     private readonly properties: ParagraphProperties;
@@ -245,4 +245,9 @@ export class Paragraph extends XmlComponent {
         this.root.splice(1, 0, run);
         return this;
     }
+
+    public addSequentialIdentifier(identifier: string): Paragraph {
+        this.root.push(new SequentialIdentifier(identifier));
+        return this;
+    }
 }

src/file/paragraph/run/index.ts

@@ -1,3 +1,4 @@
 export * from "./run";
 export * from "./text-run";
 export * from "./picture-run";
+export * from "./sequential-identifier";

src/file/paragraph/run/sequential-identifier-instruction.ts

@@ -0,0 +1,19 @@
+// http://officeopenxml.com/WPfieldInstructions.php
+import { XmlAttributeComponent, XmlComponent } from "file/xml-components";
+
+enum SpaceType {
+    DEFAULT = "default",
+    PRESERVE = "preserve",
+}
+
+class TextAttributes extends XmlAttributeComponent<{ space: SpaceType }> {
+    protected xmlKeys = { space: "xml:space" };
+}
+
+export class SequentialIdentifierInstruction extends XmlComponent {
+    constructor(identifier: string) {
+        super("w:instrText");
+        this.root.push(new TextAttributes({ space: SpaceType.PRESERVE }));
+        this.root.push(`SEQ ${identifier}`);
+    }
+}

src/file/paragraph/run/sequential-identifier.spec.ts

@@ -0,0 +1,60 @@
+import { expect } from "chai";
+
+import { Formatter } from "../../../export/formatter";
+import { SequentialIdentifier } from "./sequential-identifier";
+
+describe("Sequential Identifier", () => {
+    describe("#constructor", () => {
+        it("should construct a SEQ without options", () => {
+            const seq = new SequentialIdentifier("Figure");
+            const tree = new Formatter().format(seq);
+            expect(tree).to.be.deep.equal(DEFAULT_SEQ);
+        });
+    });
+});
+
+const DEFAULT_SEQ = {
+    "w:r": [
+        {
+            "w:rPr": [],
+        },
+        {
+            "w:fldChar": [
+                {
+                    _attr: {
+                        "w:fldCharType": "begin",
+                        "w:dirty": true,
+                    },
+                },
+            ],
+        },
+        {
+            "w:instrText": [
+                {
+                    _attr: {
+                        "xml:space": "preserve",
+                    },
+                },
+                "SEQ Figure",
+            ],
+        },
+        {
+            "w:fldChar": [
+                {
+                    _attr: {
+                        "w:fldCharType": "separate",
+                    },
+                },
+            ],
+        },
+        {
+            "w:fldChar": [
+                {
+                    _attr: {
+                        "w:fldCharType": "end",
+                    },
+                },
+            ],
+        },
+    ],
+};

src/file/paragraph/run/sequential-identifier.ts

@@ -0,0 +1,13 @@
+import { Run } from "file/paragraph/run";
+import { Begin, End, Separate } from "file/paragraph/run/field";
+import { SequentialIdentifierInstruction } from "./sequential-identifier-instruction";
+
+export class SequentialIdentifier extends Run {
+    constructor(identifier: string) {
+        super();
+        this.root.push(new Begin(true));
+        this.root.push(new SequentialIdentifierInstruction(identifier));
+        this.root.push(new Separate());
+        this.root.push(new End());
+    }
+}