| 1 | /* |
| 2 | |
| 3 | Key Events: A Really Simple Key Handler |
| 4 | |
| 5 | */ |
| 6 | |
| 7 | KeyEvents = { |
| 8 | handled: false, |
| 9 | handleF1: function() { |
| 10 | replaceChildNodes('specialMessage', 'You invoked the special F1 handler!'); |
| 11 | }, |
| 12 | handleEscape: function() { |
| 13 | replaceChildNodes('specialMessage', 'You invoked the special Escape handler!'); |
| 14 | }, |
| 15 | updateModifiers: function(e) { |
| 16 | var modifiers = e.modifier(); |
| 17 | replaceChildNodes('shift', modifiers.shift); |
| 18 | replaceChildNodes('ctrl', modifiers.ctrl); |
| 19 | replaceChildNodes('alt', modifiers.alt); |
| 20 | replaceChildNodes('meta', modifiers.meta); |
| 21 | } |
| 22 | }; |
| 23 | |
| 24 | KeyEvents.specialKeyMap = { |
| 25 | 'KEY_F1': KeyEvents.handleF1, |
| 26 | 'KEY_ESCAPE': KeyEvents.handleEscape |
| 27 | }; |
| 28 | |
| 29 | connect(document, 'onkeydown', |
| 30 | function(e) { |
| 31 | if (getElement('stopBox').checked == true) { |
| 32 | e.preventDefault(); |
| 33 | } |
| 34 | |
| 35 | // We're storing a handled flag to work around a Safari bug: |
| 36 | // http://bugs.webkit.org/show_bug.cgi?id=3387 |
| 37 | if (!KeyEvents.handled) { |
| 38 | var key = e.key(); |
| 39 | var fn = KeyEvents.specialKeyMap[key.string]; |
| 40 | if (fn) { |
| 41 | fn(); |
| 42 | } |
| 43 | replaceChildNodes('onkeydown_code', key.code); |
| 44 | replaceChildNodes('onkeydown_string', key.string); |
| 45 | KeyEvents.updateModifiers(e); |
| 46 | } |
| 47 | KeyEvents.handled = true; |
| 48 | }); |
| 49 | |
| 50 | connect(document, 'onkeyup', |
| 51 | function(e) { |
| 52 | if (getElement('stopBox').checked == true) { |
| 53 | e.preventDefault(); |
| 54 | } |
| 55 | |
| 56 | KeyEvents.handled = false; |
| 57 | var key = e.key(); |
| 58 | replaceChildNodes('onkeyup_code', key.code); |
| 59 | replaceChildNodes('onkeyup_string', key.string); |
| 60 | KeyEvents.updateModifiers(e); |
| 61 | }); |
| 62 | |
| 63 | connect(document, 'onkeypress', |
| 64 | function(e) { |
| 65 | if (getElement('stopBox').checked == true) { |
| 66 | e.preventDefault(); |
| 67 | } |
| 68 | |
| 69 | var key = e.key(); |
| 70 | replaceChildNodes('onkeypress_code', key.code); |
| 71 | replaceChildNodes('onkeypress_string', key.string); |
| 72 | KeyEvents.updateModifiers(e); |
| 73 | }); |
| 74 | |
| 75 | connect(window, 'onload', |
| 76 | function() { |
| 77 | var elems = getElementsByTagAndClassName("A", "view-source"); |
| 78 | var page = "key_events/"; |
| 79 | for (var i = 0; i < elems.length; i++) { |
| 80 | var elem = elems[i]; |
| 81 | var href = elem.href.split(/\//).pop(); |
| 82 | elem.target = "_blank"; |
| 83 | elem.href = "../view-source/view-source.html#" + page + href; |
| 84 | } |
| 85 | }); |