Disable Drupal's textarea expander?

Question

Similar to the question posting form on SO, Drupal adds a draggable expander to the bottom of textareas created through the form api. How can I disable this in a nice manner?

Answer 1

The draggable expander gets added via the behavior defined in 'misc/textearea.js'. From that you can see that it applies to textareas having a class 'resizable'. You can prevent the output of this class if you set the '#resizable' property on a textareas FAPI definition to FALSE (it defaults to TRUE if not explicitly set).

So for your own forms, you can just declare the textareas accordingly. For other forms, youD need to adjust them via hook_form_alter().

Answer 2

A new module called Disable Resizable Textarea was release now.

This is a simple module that add ability to override the default #resizable property of textarea fields. By default, all textareas are resizable. This module allows you to disable this feature on each field.

It is very easy to set up. Just edit the desired field and you will see an "Disable #resizable property of this textarea" option. You can also disable resizable from its summary, if the field is of type "Long text with summary".