docTranslate.gs

doctranslate.gs

// This function converts a document from English to Spanish quickly.
// The post from http://stackoverflow.com/questions/25509159/how-i-can-get-the-textwrap-image-in-google-doc/25509591#25509591
// was helpful for creating the logic to check for images in the document.

function translate() {
  var doc = DocumentApp.getActiveDocument();
  var body = doc.getBody();
  
  // Add a page break for the translated material.
  body.appendPageBreak();

  // Get the number of elements in the document
  var elements = body.getNumChildren();
  
  // Use the number to loop through each element in the document.
  for( var i=0;i<elements;i++) {
   var element = body.getChild(i).copy();
    var type = element.getType();
    
    // Test each type for a child element and run script based on the result
    // Images are nested in a paragraph as a child, so the second `if` makes
    // sure there is no image present before moving to the next paragraph.
    if( type == DocumentApp.ElementType.PARAGRAPH ){
      if(element.asParagraph().getNumChildren() !== 0 && element.asParagraph().getChild(0).getType() == DocumentApp.ElementType.INLINE_IMAGE) {
        var img = element.asParagraph().getChild(0).asInlineImage().getBlob();
        body.appendImage(img);
      } else if(element.asParagraph().getNumChildren() !== 0 && element.asParagraph().getChild(0).getType() == DocumentApp.ElementType.INLINE_DRAWING) {
        var drawing = element.asParagraph().copy();
        body.appendParagraph(drawing);
      } else {
        var text = element.asParagraph().getText();
        var spn = LanguageApp.translate(text, 'en', 'es');
        body.appendParagraph(spn);
      } // end the paragraph loop for child elements.
      
    // Tables are top-level, so they get their own statement outside the 
    // paragraph loop above.
    } else if(type == DocumentApp.ElementType.TABLE) {
      element.asTable().copy();
      body.appendTable(element);
    } else if(type == DocumentApp.ElementType.LIST_ITEM) {
      var list = element.asListItem().getText();
      body.appendListItem(LanguageApp.translate(list, 'en', 'es'));
    }
  }
}