client/plugins/keyboard/js/mousetrap.js
function _characterFromEvent(e) {

        // for keypress events we should return the character as is
        if (e.type == 'keypress') {
            var character = String.fromCharCode(e.which);

            // if the shift key is not pressed then it is safe to assume
            // that we want the character to be lowercase.  this means if
            // you accidentally have caps lock on then your key bindings
            // will continue to work
            //
            // the only side effect that might not be desired is if you
            // bind something like 'A' cause you want to trigger an
            // event when capital A is pressed caps lock will no longer
            // trigger the event.  shift+a will though.
            if (!e.shiftKey) {
                character = character.toLowerCase();
            }

            return character;
        }

        // for non keypress events the special maps are needed
        if (_MAP[e.which]) {
            return _MAP[e.which];
        }

        if (_KEYCODE_MAP[e.which]) {
            return _KEYCODE_MAP[e.which];
        }

        // if it is not in the special map

        // with keydown and keyup events the character seems to always
        // come in as an uppercase character whether you are pressing shift
        // or not.  we should make sure it is always lowercase for comparisons
        return String.fromCharCode(e.which).toLowerCase();
    }
function _characterFromEvent(e) {

        // for keypress events we should return the character as is
        if (e.type == 'keypress') {
            var character = String.fromCharCode(e.which);

            // if the shift key is not pressed then it is safe to assume
            // that we want the character to be lowercase.  this means if
            // you accidentally have caps lock on then your key bindings
            // will continue to work
            //
            // the only side effect that might not be desired is if you
            // bind something like 'A' cause you want to trigger an
            // event when capital A is pressed caps lock will no longer
            // trigger the event.  shift+a will though.
            if (!e.shiftKey) {
                character = character.toLowerCase();
            }

            return character;
        }

        // for non keypress events the special maps are needed
        if (_MAP[e.which]) {
            return _MAP[e.which];
        }

        if (_KEYCODE_MAP[e.which]) {
            return _KEYCODE_MAP[e.which];
        }

        // if it is not in the special map

        // with keydown and keyup events the character seems to always
        // come in as an uppercase character whether you are pressing shift
        // or not.  we should make sure it is always lowercase for comparisons
        return String.fromCharCode(e.which).toLowerCase();
    }
function _characterFromEvent ( e ) { // for keypress events we should return the character as is if ( e . type == 'keypress' ) { var character = String . fromCharCode ( e . which ) ; // if the shift key is not pressed then it is safe to assume // that we want the character to be lowercase.  this means if // you accidentally have caps lock on then your key bindings // will continue to work // // the only side effect that might not be desired is if you // bind something like 'A' cause you want to trigger an // event when capital A is pressed caps lock will no longer // trigger the event.  shift+a will though. if ( ! e . shiftKey ) { character = character . toLowerCase ( ) ; } return character ; } // for non keypress events the special maps are needed if ( _MAP [ e . which ] ) { return _MAP [ e . which ] ; } if ( _KEYCODE_MAP [ e . which ] ) { return _KEYCODE_MAP [ e . which ] ; } // if it is not in the special map // with keydown and keyup events the character seems to always // come in as an uppercase character whether you are pressing shift // or not.  we should make sure it is always lowercase for comparisons return String . fromCharCode ( e . which ) . toLowerCase ( ) ; }
takes the event and returns the key character

@param {Event} e
@return {string}
takes the event and returns the key character