Create a SharePoint Custom Action
Edit online

To open a document from your SharePoint repository in the Oxygen XML Author Component applet, add a new custom action to the contextual menu of your Documents Library:
  1. Open your SharePoint site in Microsoft SharePoint Designer®.
  2. Click Lists and Libraries in the Navigation pane.
  3. Open the Documents library.
  4. Go to the Custom Actions panel.
  5. Click the New button to add a new custom action.
  6. Give the action a name (for example, Open In Oxygen XML Author).
  7. In the Select the type of action section, select the Navigate to URL option and enter the following text:
    javascript:openInAuthor("{ItemUrl}")
    Note: This translates to a call to the openInAuthor(itemUrl) JavaScript function defined in the HTML fragment that was embedded in the Script Editor Web Part. The {ItemUrl} parameter will be expanded to the URL of the list item that the action is invoked on.
  8. Click the OK button to save the action.