webmaster@1: // $Id: textarea.js,v 1.22 2008/01/17 19:31:56 goba Exp $
webmaster@1: 
webmaster@1: Drupal.behaviors.textarea = function(context) {
webmaster@1:   $('textarea.resizable:not(.textarea-processed)', context).each(function() {
webmaster@1:     // Avoid non-processed teasers.
webmaster@1:     if ($(this).is(('textarea.teaser:not(.teaser-processed)'))) {
webmaster@1:       return false;  
webmaster@1:     }
webmaster@1:     var textarea = $(this).addClass('textarea-processed'), staticOffset = null;
webmaster@1: 
webmaster@1:     // When wrapping the text area, work around an IE margin bug.  See:
webmaster@1:     // http://jaspan.com/ie-inherited-margin-bug-form-elements-and-haslayout
webmaster@1:     $(this).wrap('<div class="resizable-textarea"><span></span></div>')
webmaster@1:       .parent().append($('<div class="grippie"></div>').mousedown(startDrag));
webmaster@1: 
webmaster@1:     var grippie = $('div.grippie', $(this).parent())[0];
webmaster@1:     grippie.style.marginRight = (grippie.offsetWidth - $(this)[0].offsetWidth) +'px';
webmaster@1: 
webmaster@1:     function startDrag(e) {
webmaster@1:       staticOffset = textarea.height() - e.pageY;
webmaster@1:       textarea.css('opacity', 0.25);
webmaster@1:       $(document).mousemove(performDrag).mouseup(endDrag);
webmaster@1:       return false;
webmaster@1:     }
webmaster@1: 
webmaster@1:     function performDrag(e) {
webmaster@1:       textarea.height(Math.max(32, staticOffset + e.pageY) + 'px');
webmaster@1:       return false;
webmaster@1:     }
webmaster@1: 
webmaster@1:     function endDrag(e) {
webmaster@1:       $(document).unbind("mousemove", performDrag).unbind("mouseup", endDrag);
webmaster@1:       textarea.css('opacity', 1);
webmaster@1:     }
webmaster@1:   });
webmaster@1: };