WIP components (as built)

resource_gauge.go

@@ -2,6 +2,7 @@ package mujica
 
 import (
 	"fmt"
+	"log/slog"
 	"math"
 
 	"github.com/egoist/mygo/ui"
@@ -22,10 +23,15 @@ type ResourceGaugeOptions struct {
 	Warn, Critical float64
 	// Height of each dial; zero means 150.
 	Height float32
+	Status DataStatus
+	Error  string
 }
 
-// ResourceGauge shows CPU, memory and disk dials with named normal, high and critical bands.
-func ResourceGauge(c *ui.Context, readings []ResourceReading, opts ResourceGaugeOptions) *ui.Element {
+// ResourceGauge shows resource usage with named threshold bands.
+func ResourceGauge(c *ui.Context, readings []ResourceReading, opts ResourceGaugeOptions) ChoiceResult {
+	if opts.Status != DataReady && opts.Status != DataLoading && opts.Status != DataFailed {
+		panic("mujica: ResourceGauge needs a known status")
+	}
 	warn, crit := opts.Warn, opts.Critical
 	if warn == 0 {
 		warn = 0.7
@@ -42,16 +48,23 @@ func ResourceGauge(c *ui.Context, readings []ResourceReading, opts ResourceGauge
 	}
 	u := Density(c).Unit()
 	row := ui.Row(c).Wrap().Gap(u * 4).Shrink(0)
+	result := ChoiceResult{Element: row}
 	row.Children(func() {
+		if len(readings) == 0 {
+			ui.Column(c).Height(h).Children(func() {
+				result.changed = dataPlaceholder(c, opts.Status, opts.Error, msg(c, "resource_gauge.empty"), "")
+			})
+			return
+		}
 		for i, r := range readings {
-			if r.Name == "" || !(r.Total > 0) || r.Used < 0 || r.Used > r.Total || math.IsNaN(r.Used) {
+			if r.Name == "" || !(r.Total > 0) || r.Used < 0 || r.Used > r.Total || math.IsNaN(r.Used) || math.IsInf(r.Used, 0) || math.IsInf(r.Total, 0) {
 				panic(fmt.Sprintf("mujica: ResourceGauge reading %d needs a Name and 0 <= Used <= Total", i))
 			}
 			frac := r.Used / r.Total
 			ui.Column(c).Key(r.Name).Width(200).Gap(u).AlignItems(ui.Center).Children(func() {
 				ui.Text(c, r.Name).FontWeight(600)
-				Gauge(c, frac*100, GaugeOptions{
-					Frame: ChartFrame{Label: r.Name, Height: h}, Min: 0, Max: 100, Unit: "%",
+				gauge := Gauge(c, frac*100, GaugeOptions{
+					Frame: ChartFrame{Label: r.Name, Height: h, Status: opts.Status, Error: opts.Error}, Min: 0, Max: 100, Unit: "%",
 					Format: func(v float64) string { return fmt.Sprintf("%.0f", v) },
 					Segments: []GaugeSegment{
 						{To: warn * 100, Label: msg(c, "resource_gauge.normal"), Tone: GaugeGood},
@@ -59,11 +72,15 @@ func ResourceGauge(c *ui.Context, readings []ResourceReading, opts ResourceGauge
 						{To: 100, Label: msg(c, "resource_gauge.critical"), Tone: GaugeDanger},
 					},
 				})
+				result.changed = result.changed || gauge.Retried()
 				if r.Unit != "" {
 					agentCaption(c, fmt.Sprintf("%s / %s %s", sandboxNum(r.Used), sandboxNum(r.Total), r.Unit))
 				}
 			})
 		}
 	})
-	return row
+	if result.changed {
+		slog.Debug("mujica: resource_gauge retry")
+	}
+	return result
 }