I use this extension https://github.com/emizentech/magento2-call-for-price to hide price and replace it with a string like call us for a quote, it works fine at this point but when I try to add sample file by mark the product as has no weight and check is downloadable add sample file (pdf file), the string (call us for a quote) disappear. I think that the problem is the if statement condition includes only isSaleable product, I need to include other condition that the product has no weight and is downloadble

public function wrapResult($  html) {     if($  this->getSaleableItem()->getCallforpriceText()==''):       return '<div class="price-box ' . $  this->getData('css_classes') . '" ' .         'data-role="priceBox" ' .         'data-product-id="' . $  this->getSaleableItem()->getId() . '"' .         '>' . $  html . '</div>';      else :     return '<div class="price-box "><span>'.$  this->getSaleableItem()->getCallforpriceText().'</span></div>';    endif;  } 

and

                          <!--call for price condition-->                         <?php if($  _product->getCallforpriceText()==''):?>                              <?php if ($  _product->isSaleable()|| $  product->getWeight() == ): ?>                                 <?php $  postParams = $  block->getAddToCartPostParams($  _product); ?>                                 <form data-role="tocart-form" action="<?php /* @escapeNotVerified */ echo $  postParams['action']; ?>" method="post">                                     <input type="hidden" name="product" value="<?php /* @escapeNotVerified */ echo $  postParams['data']['product']; ?>">                                     <input type="hidden" name="<?php /* @escapeNotVerified */ echo Action::PARAM_NAME_URL_ENCODED; ?>" value="<?php /* @escapeNotVerified */ echo $  postParams['data'][Action::PARAM_NAME_URL_ENCODED]; ?>">                                     <?php echo $  block->getBlockHtml('formkey')?>                                     <button type="submit"                                             title="<?php echo $  block->escapeHtml(__('Add to Cart')); ?>"                                             class="action tocart primary">                                         <span><?php /* @escapeNotVerified */ echo __('Add to Cart') ?></span>                                     </button>                                 </form>                             <?php else: ?>                                 <?php if ($  _product->getIsSalable()): ?>                                     <div class="stock available"><span><?php /* @escapeNotVerified */ echo __('In stock') ?></span></div>                                 <?php else: ?>                                     <div class="stock unavailable"><span><?php /* @escapeNotVerified */ echo __('Out of stock') ?></span></div>                                 <?php endif; ?>                             <?php endif; ?>                              <?php endif; ?>                           </div>