Return the list to display in the UI.

def msg_curse(self, args=None, max_width=None):
        """Return the list to display in the UI."""
        # Init the return message
        ret = []

        # Only process if stats exist and plugin not disable
        if not self.stats or self.args.percpu or self.is_disable():
            return ret

        # Build the string message
        # If user stat is not here, display only idle / total CPU usage (for
        # exemple on Windows OS)
        idle_tag = 'user' not in self.stats

        # Header
        msg = '{}'.format('CPU')
        ret.append(self.curse_add_line(msg, "TITLE"))
        trend_user = self.get_trend('user')
        trend_system = self.get_trend('system')
        if trend_user is None or trend_user is None:
            trend_cpu = None
        else:
            trend_cpu = trend_user + trend_system
        msg = ' {:4}'.format(self.trend_msg(trend_cpu))
        ret.append(self.curse_add_line(msg))
        # Total CPU usage
        msg = '{:5.1f}%'.format(self.stats['total'])
        if idle_tag:
            ret.append(self.curse_add_line(
                msg, self.get_views(key='total', option='decoration')))
        else:
            ret.append(self.curse_add_line(msg))
        # Nice CPU
        if 'nice' in self.stats:
            msg = '  {:8}'.format('nice:')
            ret.append(self.curse_add_line(msg, optional=self.get_views(key='nice', option='optional')))
            msg = '{:5.1f}%'.format(self.stats['nice'])
            ret.append(self.curse_add_line(msg, optional=self.get_views(key='nice', option='optional')))
        # ctx_switches
        if 'ctx_switches' in self.stats:
            msg = '  {:8}'.format('ctx_sw:')
            ret.append(self.curse_add_line(msg, optional=self.get_views(key='ctx_switches', option='optional')))
            msg = '{:>5}'.format(self.auto_unit(int(self.stats['ctx_switches'] // self.stats['time_since_update']),
                                                min_symbol='K'))
            ret.append(self.curse_add_line(
                msg, self.get_views(key='ctx_switches', option='decoration'),
                optional=self.get_views(key='ctx_switches', option='optional')))

        # New line
        ret.append(self.curse_new_line())
        # User CPU
        if 'user' in self.stats:
            msg = '{:8}'.format('user:')
            ret.append(self.curse_add_line(msg))
            msg = '{:5.1f}%'.format(self.stats['user'])
            ret.append(self.curse_add_line(
                msg, self.get_views(key='user', option='decoration')))
        elif 'idle' in self.stats:
            msg = '{:8}'.format('idle:')
            ret.append(self.curse_add_line(msg))
            msg = '{:5.1f}%'.format(self.stats['idle'])
            ret.append(self.curse_add_line(msg))
        # IRQ CPU
        if 'irq' in self.stats:
            msg = '  {:8}'.format('irq:')
            ret.append(self.curse_add_line(msg, optional=self.get_views(key='irq', option='optional')))
            msg = '{:5.1f}%'.format(self.stats['irq'])
            ret.append(self.curse_add_line(msg, optional=self.get_views(key='irq', option='optional')))
        # interrupts
        if 'interrupts' in self.stats:
            msg = '  {:8}'.format('inter:')
            ret.append(self.curse_add_line(msg, optional=self.get_views(key='interrupts', option='optional')))
            msg = '{:>5}'.format(int(self.stats['interrupts'] // self.stats['time_since_update']))
            ret.append(self.curse_add_line(msg, optional=self.get_views(key='interrupts', option='optional')))

        # New line
        ret.append(self.curse_new_line())
        # System CPU
        if 'system' in self.stats and not idle_tag:
            msg = '{:8}'.format('system:')
            ret.append(self.curse_add_line(msg))
            msg = '{:5.1f}%'.format(self.stats['system'])
            ret.append(self.curse_add_line(
                msg, self.get_views(key='system', option='decoration')))
        else:
            msg = '{:8}'.format('core:')
            ret.append(self.curse_add_line(msg))
            msg = '{:>6}'.format(self.stats['nb_log_core'])
            ret.append(self.curse_add_line(msg))
        # IOWait CPU
        if 'iowait' in self.stats:
            msg = '  {:8}'.format('iowait:')
            ret.append(self.curse_add_line(msg, optional=self.get_views(key='iowait', option='optional')))
            msg = '{:5.1f}%'.format(self.stats['iowait'])
            ret.append(self.curse_add_line(
                msg, self.get_views(key='iowait', option='decoration'),
                optional=self.get_views(key='iowait', option='optional')))
        # soft_interrupts
        if 'soft_interrupts' in self.stats:
            msg = '  {:8}'.format('sw_int:')
            ret.append(self.curse_add_line(msg, optional=self.get_views(key='soft_interrupts', option='optional')))
            msg = '{:>5}'.format(int(self.stats['soft_interrupts'] // self.stats['time_since_update']))
            ret.append(self.curse_add_line(msg, optional=self.get_views(key='soft_interrupts', option='optional')))

        # New line
        ret.append(self.curse_new_line())
        # Idle CPU
        if 'idle' in self.stats and not idle_tag:
            msg = '{:8}'.format('idle:')
            ret.append(self.curse_add_line(msg))
            msg = '{:5.1f}%'.format(self.stats['idle'])
            ret.append(self.curse_add_line(msg))
        # Steal CPU usage
        if 'steal' in self.stats:
            msg = '  {:8}'.format('steal:')
            ret.append(self.curse_add_line(msg, optional=self.get_views(key='steal', option='optional')))
            msg = '{:5.1f}%'.format(self.stats['steal'])
            ret.append(self.curse_add_line(
                msg, self.get_views(key='steal', option='decoration'),
                optional=self.get_views(key='steal', option='optional')))
        # syscalls
        # syscalls: number of system calls since boot. Always set to 0 on Linux. (do not display)
        if 'syscalls' in self.stats and not LINUX:
            msg = '  {:8}'.format('syscal:')
            ret.append(self.curse_add_line(msg, optional=self.get_views(key='syscalls', option='optional')))
            msg = '{:>5}'.format(int(self.stats['syscalls'] // self.stats['time_since_update']))
            ret.append(self.curse_add_line(msg, optional=self.get_views(key='syscalls', option='optional')))

        # Return the message with decoration
        return ret