Agent: components 261-280

artifact_version_switcher.go

@@ -0,0 +1,89 @@
+package mujica
+
+import (
+	"fmt"
+	"log/slog"
+
+	"github.com/egoist/mygo/ui"
+
+	"mujicaui/icons"
+)
+
+// ArtifactVersion is one saved version of an artifact.
+type ArtifactVersion struct {
+	Label string
+	Note  string
+}
+
+// ArtifactVersionSwitcherOptions configure an ArtifactVersionSwitcher.
+type ArtifactVersionSwitcherOptions struct {
+	Disabled bool
+}
+
+// ArtifactVersionResult reports this frame's events.
+type ArtifactVersionResult struct {
+	Element *ui.Element
+	// Changed reports *current moved.
+	Changed bool
+	// Compare asks to diff current against the previous version.
+	Compare bool
+}
+
+// ArtifactVersionSwitcher steps between artifact versions.
+func ArtifactVersionSwitcher(c *ui.Context, current *int, versions []ArtifactVersion, opts ArtifactVersionSwitcherOptions) ArtifactVersionResult {
+	if current == nil || len(versions) == 0 || *current < 0 || *current >= len(versions) {
+		panic("mujica: ArtifactVersionSwitcher needs versions and a current index inside them")
+	}
+	for i, v := range versions {
+		if v.Label == "" {
+			panic(fmt.Sprintf("mujica: ArtifactVersionSwitcher version %d needs a Label", i))
+		}
+	}
+	u := Density(c).Unit()
+	n := len(versions)
+	var r ArtifactVersionResult
+	r.Element = ui.Row(c).Shrink(0).Gap(u * 2).AlignItems(ui.Center).Disabled(opts.Disabled).
+		Label(msg(c, "artifact_version_switcher.label"))
+	locked := r.Element.IsDisabled()
+	move := func(d int) {
+		if to := *current + d; !locked && to >= 0 && to < n {
+			*current, r.Changed = to, true
+		}
+	}
+	r.Element.Children(func() {
+		if iconAction(c, icons.Must("chevron-left"), msg(c, "artifact_version_switcher.older")).Disabled(locked || *current == 0).Clicked() {
+			move(-1)
+		}
+		v := versions[*current]
+		ui.Column(c).Shrink(1).Role(ui.RoleStatus).Label(v.Label).Children(func() {
+			ui.Row(c).Gap(u * 2).AlignItems(ui.Center).Children(func() {
+				ui.Text(c, v.Label).FontWeight(600).SingleLine()
+				agentCaption(c, fmt.Sprintf(msg(c, "artifact_version_switcher.count"), *current+1, n))
+			})
+			if v.Note != "" {
+				agentCaption(c, v.Note).SingleLine()
+			}
+		})
+		if iconAction(c, icons.Must("chevron-right"), msg(c, "artifact_version_switcher.newer")).Disabled(locked || *current == n-1).Clicked() {
+			move(1)
+		}
+		if *current > 0 {
+			label := fmt.Sprintf(msg(c, "artifact_version_switcher.compare"), versions[*current-1].Label)
+			if agentToggle(c, label, "arrow-up-down", locked) {
+				r.Compare = true
+			}
+		}
+	})
+	if !locked {
+		if r.Element.Shortcut(0, ui.KeyLeft) {
+			move(-1)
+		}
+		if r.Element.Shortcut(0, ui.KeyRight) {
+			move(1)
+		}
+	}
+	if r.Changed || r.Compare {
+		slog.Debug("mujica: artifact_version_switcher event", "current", *current, "compare", r.Compare)
+	}
+	return r
+}