| <!DOCTYPE html> |
| <body> |
| |
| <form> |
| <input type="checkbox" name="foo" id="cb1" value="Shadow"> |
| <input type="submit"> |
| </form> |
| |
| <style> |
| #cb1 { |
| -webkit-appearance: none; |
| border: outset; |
| padding: 2px; |
| font-family: monospace; |
| font-size: 20px; |
| white-space: pre; |
| width: 30px; |
| height: 30px; |
| margin: 0; |
| } |
| |
| #cb1:focus { |
| outline: none; |
| } |
| </style> |
| <script> |
| cb1.updateAppearance_ = function() { |
| if (this.checked) |
| this.root_.innerHTML = '<span style="color:red;">✔</span>'; |
| else |
| this.root_.innerHTML = '<span> </span>'; |
| }; |
| |
| cb1.init = function() { |
| this.root_ = this.createShadowRoot(); |
| this.checked_ = this.hasAttribute('checked'); |
| this.updateAppearance_(); |
| |
| this.addEventListener('DOMActivate', function() { |
| this.checked = !cb1.checked; |
| this.dispatchEvent(new CustomEvent('change', true, false)); |
| }, false); |
| |
| this.__defineSetter__('checked', function(value) { |
| this.checked_ = !!value; |
| this.updateAppearance_(); |
| // FIXME: We'd like to update HTMLInputElement.prototype.checked, but it |
| // seems there are no ways to do it. Updating 'checked' HTML attribute |
| // (the default value) works for form submission because the checkbox is |
| // never dirty. |
| if (this.checked_) |
| this.setAttribute('checked', ''); |
| else |
| this.removeAttribute('checked', ''); |
| }); |
| |
| this.__defineGetter__('checked', function() { return this.checked_; }); |
| }; |
| |
| cb1.init(); |
| |
| window.onload = function() { |
| if (!window.eventSender) |
| return; |
| eventSender.mouseMoveTo(cb1.offsetLeft + 10, cb1.offsetTop + 10); |
| eventSender.mouseDown(); |
| eventSender.mouseUp(); |
| }; |
| </script> |
| </body> |
