WIP components (as built)

sources_panel_test.go

@@ -64,3 +64,52 @@ func TestSourcesPanelSnapshot(t *testing.T) {
 		ui.Column(c).Padding(16).Height(420).Children(func() { SourcesPanel(c, sourcesSample, st) })
 	})
 }
+
+func TestSourcesPanelLargeData(t *testing.T) {
+	sources := make([]Source, 100000)
+	for i := range sources {
+		sources[i] = Source{Title: fmt.Sprintf("Archive %d", i), URL: "https://example.com"}
+	}
+	st := CitationState{}
+	tt := ui.NewTester(func(c *ui.Context) {
+		Use(c, Settings{})
+		ui.Column(c).Width(360).Height(300).Children(func() { SourcesPanel(c, sources, &st) })
+	}, 400, 300)
+	if n := len(tt.Texts()); n > 250 {
+		t.Fatalf("built %d labels for 100000 sources, want <= 250", n)
+	}
+	st.Active = 99999
+	tt.Frame()
+	r, ok := tt.Find("Archive 99998")
+	if !ok || r.Y < 0 || r.Y+r.H > 300 {
+		t.Fatalf("active source bounds %v found %v", r, ok)
+	}
+}
+
+func TestSourcesPanelRepeatsCitationLocate(t *testing.T) {
+	sources := make([]Source, 100)
+	for i := range sources {
+		sources[i] = Source{Title: fmt.Sprintf("Archive %d", i+1), URL: "https://example.com"}
+	}
+	var st CitationState
+	actions := 0
+	tt := ui.NewTester(func(c *ui.Context) {
+		Use(c, Settings{})
+		ui.Column(c).Fill().Children(func() {
+			if CitationBadge(c, 90, sources[89], &st).Changed() {
+				actions++
+			}
+			ui.Column(c).Height(250).Children(func() { SourcesPanel(c, sources, &st) })
+		})
+	}, 400, 300)
+	for i := range 2 {
+		if err := tt.Click("Source 90: Archive 90"); err != nil {
+			t.Fatal(err)
+		}
+		b, ok := tt.Find("Archive 90")
+		if !ok || b.H == 0 || b.Y < 0 || b.Y+b.H > 300 || actions != i+1 {
+			t.Fatalf("locate %d: bounds %v found %v events %d", i+1, b, ok, actions)
+		}
+		tt.Scroll(100, 150, 0, -100000)
+	}
+}