1 // $Id: textarea.js,v 1.22 2008/01/17 19:31:56 goba Exp $

     2 

     3 Drupal.behaviors.textarea = function(context) {

     4   $('textarea.resizable:not(.textarea-processed)', context).each(function() {

     5     // Avoid non-processed teasers.

     6     if ($(this).is(('textarea.teaser:not(.teaser-processed)'))) {

     7       return false;  

     8     }

     9     var textarea = $(this).addClass('textarea-processed'), staticOffset = null;

    10 

    11     // When wrapping the text area, work around an IE margin bug.  See:

    12     // http://jaspan.com/ie-inherited-margin-bug-form-elements-and-haslayout

    13     $(this).wrap('<div class="resizable-textarea"><span></span></div>')

    14       .parent().append($('<div class="grippie"></div>').mousedown(startDrag));

    15 

    16     var grippie = $('div.grippie', $(this).parent())[0];

    17     grippie.style.marginRight = (grippie.offsetWidth - $(this)[0].offsetWidth) +'px';

    18 

    19     function startDrag(e) {

    20       staticOffset = textarea.height() - e.pageY;

    21       textarea.css('opacity', 0.25);

    22       $(document).mousemove(performDrag).mouseup(endDrag);

    23       return false;

    24     }

    25 

    26     function performDrag(e) {

    27       textarea.height(Math.max(32, staticOffset + e.pageY) + 'px');

    28       return false;

    29     }

    30 

    31     function endDrag(e) {

    32       $(document).unbind("mousemove", performDrag).unbind("mouseup", endDrag);

    33       textarea.css('opacity', 1);

    34     }

    35   });

    36 };