prototyped svg reports

server/ui/svg/element.go

@@ -0,0 +1,57 @@
+package svg
+
+import (
+	"fmt"
+	"io"
+	"strings"
+)
+
+type (
+	// Element is a convenience for implementing SVG element models.
+	// Element implements MarshalerReader.
+	Element[T Tag, A Attribute, C MarshalerReader] struct {
+		Attributes []A
+		Children   []C
+	}
+)
+
+func (e *Element[T, A, C]) Attr(as ...A) *Element[T, A, C] {
+	e.Attributes = append(e.Attributes, as...)
+	return e
+}
+
+func (e *Element[T, A, C]) Child(cs ...C) *Element[T, A, C] {
+	e.Children = append(e.Children, cs...)
+	return e
+}
+
+func (e Element[T, A, C]) GetMarkup() string {
+	attrs := make([]string, len(e.Attributes))
+	for i, a := range e.Attributes {
+		attrs[i] = PrintAttribute(a)
+	}
+
+	children := make([]string, len(e.Children))
+	for i, c := range e.Children {
+		children[i] = c.GetMarkup()
+	}
+
+	tag := e.PrintTag()
+
+	return fmt.Sprintf(
+		`<%s %s>%s</%s>`,
+		tag,
+		strings.Join(attrs, " "),
+		strings.Join(children, ""),
+		tag,
+	)
+}
+
+func (e Element[T, A, C]) GetMarkupReader() io.Reader {
+	return newElementReader(e)
+}
+
+func (e Element[T, _, _]) PrintTag() string {
+	var t T
+	return t.PrintTag()
+}