Restrict time-related meters to textual display (Text+LED mode)

This disables graphing and bar mode display for:
* ClockMeter
* DateMeter
* DateTimeMeter
* UptimeMeter

Co-authored-by: Benny Baumann <BenBE@geshi.org>
Co-authored-by: Kang-Che Sung <explorer09@gmail.com>

Author: Explorer09

ClockMeter.c

@@ -26,7 +26,6 @@ static void ClockMeter_updateValues(Meter* this) {
 
    struct tm result;
    const struct tm* lt = localtime_r(&host->realtime.tv_sec, &result);
-   this->values[0] = lt->tm_hour * 60 + lt->tm_min;
    strftime(this->txtBuffer, sizeof(this->txtBuffer), "%H:%M:%S", lt);
 }
 
@@ -37,8 +36,9 @@ const MeterClass ClockMeter_class = {
    },
    .updateValues = ClockMeter_updateValues,
    .defaultMode = TEXT_METERMODE,
-   .maxItems = 1,
-   .total = 1440, /* 24*60 */
+   .supportedModes = (1 << TEXT_METERMODE) | (1 << LED_METERMODE),
+   .maxItems = 0,
+   .total = 0.0,
    .attributes = ClockMeter_attributes,
    .name = "Clock",
    .uiName = "Clock",

DateMeter.c

@@ -26,13 +26,6 @@ static void DateMeter_updateValues(Meter* this) {
 
    struct tm result;
    const struct tm* lt = localtime_r(&host->realtime.tv_sec, &result);
-   this->values[0] = lt->tm_yday;
-   int year = lt->tm_year + 1900;
-   if (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0)) {
-      this->total = 366;
-   } else {
-      this->total = 365;
-   }
    strftime(this->txtBuffer, sizeof(this->txtBuffer), "%F", lt);
 }
 
@@ -43,8 +36,9 @@ const MeterClass DateMeter_class = {
    },
    .updateValues = DateMeter_updateValues,
    .defaultMode = TEXT_METERMODE,
-   .maxItems = 1,
-   .total = 365,
+   .supportedModes = (1 << TEXT_METERMODE) | (1 << LED_METERMODE),
+   .maxItems = 0,
+   .total = 0.0,
    .attributes = DateMeter_attributes,
    .name = "Date",
    .uiName = "Date",

DateTimeMeter.c

@@ -26,13 +26,6 @@ static void DateTimeMeter_updateValues(Meter* this) {
 
    struct tm result;
    const struct tm* lt = localtime_r(&host->realtime.tv_sec, &result);
-   int year = lt->tm_year + 1900;
-   if (((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0)) {
-      this->total = 366;
-   } else {
-      this->total = 365;
-   }
-   this->values[0] = lt->tm_yday;
    strftime(this->txtBuffer, sizeof(this->txtBuffer), "%F %H:%M:%S", lt);
 }
 
@@ -43,8 +36,9 @@ const MeterClass DateTimeMeter_class = {
    },
    .updateValues = DateTimeMeter_updateValues,
    .defaultMode = TEXT_METERMODE,
-   .maxItems = 1,
-   .total = 365,
+   .supportedModes = (1 << TEXT_METERMODE) | (1 << LED_METERMODE),
+   .maxItems = 0,
+   .total = 0.0,
    .attributes = DateTimeMeter_attributes,
    .name = "DateTime",
    .uiName = "Date and Time",

UptimeMeter.c

@@ -29,10 +29,7 @@ static void UptimeMeter_updateValues(Meter* this) {
    int minutes = (totalseconds / 60) % 60;
    int hours = (totalseconds / 3600) % 24;
    int days = (totalseconds / 86400);
-   this->values[0] = days;
-   if (days > this->total) {
-      this->total = days;
-   }
+
    char daysbuf[32];
    if (days > 100) {
       xSnprintf(daysbuf, sizeof(daysbuf), "%d days(!), ", days);
@@ -53,8 +50,9 @@ const MeterClass UptimeMeter_class = {
    },
    .updateValues = UptimeMeter_updateValues,
    .defaultMode = TEXT_METERMODE,
-   .maxItems = 1,
-   .total = 100.0,
+   .supportedModes = (1 << TEXT_METERMODE) | (1 << LED_METERMODE),
+   .maxItems = 0,
+   .total = 0.0,
    .attributes = UptimeMeter_attributes,
    .name = "Uptime",
    .uiName = "Uptime",