diff options
Diffstat (limited to 'includes/ajax.inc')
| -rw-r--r-- | includes/ajax.inc | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/includes/ajax.inc b/includes/ajax.inc index 41c69832a..6111d3784 100644 --- a/includes/ajax.inc +++ b/includes/ajax.inc @@ -619,13 +619,24 @@ function ajax_pre_render_element($element) { case 'submit': case 'button': case 'image_button': - // Use the mousedown instead of the click event because form - // submission via pressing the enter key triggers a click event on - // submit inputs, inappropriately triggering Ajax behaviors. + // Pressing the ENTER key within a textfield triggers the click event of + // the form's first submit button. Triggering Ajax in this situation + // leads to problems, like breaking autocomplete textfields, so we bind + // to mousedown instead of click. + // @see http://drupal.org/node/216059 $element['#ajax']['event'] = 'mousedown'; - // Attach an additional event handler so that Ajax behaviors - // can be triggered still via keyboard input. + // Retain keyboard accessibility by setting 'keypress'. This causes + // ajax.js to trigger 'event' when SPACE or ENTER are pressed while the + // button has focus. $element['#ajax']['keypress'] = TRUE; + // Binding to mousedown rather than click means that it is possible to + // trigger a click by pressing the mouse, holding the mouse button down + // until the Ajax request is complete and the button is re-enabled, and + // then releasing the mouse button. Set 'prevent' so that ajax.js binds + // an additional handler to prevent such a click from triggering a + // non-Ajax form submission. This also prevents a textfield's ENTER + // press triggering this button's non-Ajax form submission behavior. + $element['#ajax']['prevent'] = 'click'; break; case 'password': |