Add app details and icon cache (T-204)

core/application/catalog_list.go

@@ -23,6 +23,9 @@ type CatalogListItem struct {
 	Version     string
 	Category    string
 	Tags        []string
+	IconRef     string
+	Homepage    string
+	Tutorial    string
 	Status      domain.AppStatus
 	Installed   bool
 	Installable bool
@@ -141,6 +144,16 @@ func (model *CatalogListModel) SelectedID() string {
 	return model.selectedID
 }
 
+// SelectedItem returns the selected source item without changing filters.
+func (model *CatalogListModel) SelectedItem() (CatalogListItem, bool) {
+	for _, item := range model.items {
+		if item.ID == model.selectedID {
+			return item, true
+		}
+	}
+	return CatalogListItem{}, false
+}
+
 // Valid reports whether view is supported by the MVP list.
 func (view CatalogView) Valid() bool {
 	return view == CatalogViewAll ||

core/application/catalog_list_test.go

@@ -64,6 +64,10 @@ func TestCatalogListModelPreservesStableOrderAndSelection(t *testing.T) {
 	if model.SelectedID() != "app-a" {
 		t.Fatalf("SelectedID = %q", model.SelectedID())
 	}
+	selected, ok := model.SelectedItem()
+	if !ok || selected.ID != "app-a" {
+		t.Fatalf("SelectedItem() = %#v, %t", selected, ok)
+	}
 
 	model.SetItems([]CatalogListItem{{ID: "app-b", Name: "B", Category: "工具"}})
 	if model.SelectedID() != "" {