Function sync

front/include/keyboard.js:93–125

(evt, keysym)

        state[XK_Meta_L] = false;

        function sync(evt, keysym) {
            var result = [];
            function syncKey(keysym) {
                return {keysym: keysyms.lookup(keysym), type: state[keysym] ? 'keydown' : 'keyup'};
            }

            if (evt.ctrlKey !== undefined &&
                evt.ctrlKey !== state[XK_Control_L] && keysym !== XK_Control_L) {
                state[XK_Control_L] = evt.ctrlKey;
                result.push(syncKey(XK_Control_L));
            }
            if (evt.altKey !== undefined &&
                evt.altKey !== state[XK_Alt_L] && keysym !== XK_Alt_L) {
                state[XK_Alt_L] = evt.altKey;
                result.push(syncKey(XK_Alt_L));
            }
            if (evt.altGraphKey !== undefined &&
                evt.altGraphKey !== state[XK_ISO_Level3_Shift] && keysym !== XK_ISO_Level3_Shift) {
                state[XK_ISO_Level3_Shift] = evt.altGraphKey;
                result.push(syncKey(XK_ISO_Level3_Shift));
            }
            if (evt.shiftKey !== undefined &&
                evt.shiftKey !== state[XK_Shift_L] && keysym !== XK_Shift_L) {
                state[XK_Shift_L] = evt.shiftKey;
                result.push(syncKey(XK_Shift_L));
            }
            if (evt.metaKey !== undefined &&
                evt.metaKey !== state[XK_Meta_L] && keysym !== XK_Meta_L) {
                state[XK_Meta_L] = evt.metaKey;
                result.push(syncKey(XK_Meta_L));
            }
            return result;
        }
        function syncKeyEvent(evt, down) {
            var obj = getKeysym(evt);
            var keysym = obj ? obj.keysym : null;