show namesake for child views

pkg/gui/context/dynamic_title_builder.go

@@ -0,0 +1,23 @@
+package context
+
+import "fmt"
+
+type DynamicTitleBuilder struct {
+	formatStr string // e.g. 'remote branches for %s'
+
+	titleRef string // e.g. 'origin'
+}
+
+func NewDynamicTitleBuilder(formatStr string) *DynamicTitleBuilder {
+	return &DynamicTitleBuilder{
+		formatStr: formatStr,
+	}
+}
+
+func (self *DynamicTitleBuilder) SetTitleRef(titleRef string) {
+	self.titleRef = titleRef
+}
+
+func (self *DynamicTitleBuilder) Title() string {
+	return fmt.Sprintf(self.formatStr, self.titleRef)
+}