(evt)
| 165 | // Get the most reliable keysym value we can get from a key event |
| 166 | // if char/charCode is available, prefer those, otherwise fall back to key/keyCode/which |
| 167 | function getKeysym(evt){ |
| 168 | var codepoint; |
| 169 | if (evt.char && evt.char.length === 1) { |
| 170 | codepoint = evt.char.charCodeAt(); |
| 171 | } |
| 172 | else if (evt.charCode) { |
| 173 | codepoint = evt.charCode; |
| 174 | } |
| 175 | else if (evt.keyCode && evt.type === 'keypress') { |
| 176 | // IE10 stores the char code as keyCode, and has no other useful properties |
| 177 | codepoint = evt.keyCode; |
| 178 | } |
| 179 | if (codepoint) { |
| 180 | var res = keysyms.fromUnicode(substituteCodepoint(codepoint)); |
| 181 | if (res) { |
| 182 | return res; |
| 183 | } |
| 184 | } |
| 185 | // we could check evt.key here. |
| 186 | // Legal values are defined in http://www.w3.org/TR/DOM-Level-3-Events/#key-values-list, |
| 187 | // so we "just" need to map them to keysym, but AFAIK this is only available in IE10, which also provides evt.key |
| 188 | // so we don't *need* it yet |
| 189 | if (evt.keyCode) { |
| 190 | return keysyms.lookup(keysymFromKeyCode(evt.keyCode, evt.shiftKey)); |
| 191 | } |
| 192 | if (evt.which) { |
| 193 | return keysyms.lookup(keysymFromKeyCode(evt.which, evt.shiftKey)); |
| 194 | } |
| 195 | return null; |
| 196 | } |
| 197 | |
| 198 | // Given a keycode, try to predict which keysym it might be. |
| 199 | // If the keycode is unknown, null is returned. |
no test coverage detected