Performs a basic Word API call using TypeScript.

InsertFileFromBase64.WORD.yaml

name: InsertFileFromBase64
description: Performs a basic Word API call using TypeScript.
host: WORD
api_set: {}
script:
  content: |
    $("#file").change(getBase64);
    $("#insert-sheets").click(() => tryCatch(insertDocument));

    let externalDoc;

    async function getBase64() {
      // Retrieve the file and set up an HTML FileReader element.
      const myFile = <HTMLInputElement>document.getElementById("file");
      const reader = new FileReader();

      reader.onload = (event) => {
        // Remove the metadata before the base64-encoded string.
        const startIndex = reader.result.toString().indexOf("base64,");
        externalDoc = reader.result.toString().substr(startIndex + 7);
      };

      // Read the file as a data URL so that we can parse the base64-encoded string.
      reader.readAsDataURL(myFile.files[0]);
    }

    async function insertDocument() {
      await Word.run(async (context) => {
        // Retrieve the source workbook.
        var option = {
          importTheme: true,
          importStyles: true,
          importParagraphSpacing: true,
          importPageColor: true,
          importChangeTrackingMode: true
        };

        const document = context.document.body.insertFileFromBase64(externalDoc, "Replace");
        await context.sync();
      });
    }

    /** Default helper for invoking an action and handling errors. */
    async function tryCatch(callback) {
      try {
        await callback();
      } catch (error) {
        // Note: In a production add-in, you'd want to notify the user through your add-in's UI.
        console.error(error);
      }
    }
  language: typescript
template:
  content: "<section class=\"ms-font-m\">\n\t<p>This sample shows how to insert content from an existing Document into the current Document.</p>\n</section>\n\n<section class=\"samples ms-font-m\">\n\t<h3>Try it out</h3>\n\t<p>Select an Word document to copy its content into the current one.</p>\n\t<form>\n\t\t<input type=\"file\" id=\"file\" />\n    </form>\n\t\t<br>\n\t\t<p>Insert the content from the selected Document.</p>\n\t\t<button id=\"insert-sheets\" class=\"ms-Button\">\n        <span class=\"ms-Button-label\">Insert content</span>\n    </button>\n</section>"
  language: html
style:
  content: |-
    section.samples {
        margin-top: 20px;
    }

    section.samples .ms-Button, section.setup .ms-Button {
        display: block;
        margin-bottom: 5px;
        margin-left: 20px;
        min-width: 80px;
    }
  language: css
libraries: |
  https://appsforoffice.microsoft.com/lib/beta/hosted/office.js
  @types/office-js-preview

  office-ui-fabric-js@1.4.0/dist/css/fabric.min.css
  office-ui-fabric-js@1.4.0/dist/css/fabric.components.min.css

  core-js@2.4.1/client/core.min.js
  @types/core-js

  jquery@3.1.1
  @types/jquery@3.3.1