Added a list example

elements/basic/list.go

@@ -359,6 +359,9 @@ func (element *List) selectUnderMouse (x, y int) (updated bool) {
 	if element.onSelectedEntryChange != nil {
 		element.onSelectedEntryChange(element.selectedEntry)
 	}
+	if element.selectedEntry >= 0 {
+		element.entries[element.selectedEntry].RunSelect()
+	}
 	return true
 }
 

elements/basic/listentry.go

@@ -12,13 +12,13 @@ type ListEntry struct {
 	textPoint image.Point
 	text string
 	forcedMinimumWidth int
-	onClick func ()
+	onSelect func ()
 }
 
-func NewListEntry (text string, onClick func ()) (entry ListEntry) {
+func NewListEntry (text string, onSelect func ()) (entry ListEntry) {
 	entry = ListEntry  {
-		text:    text,
-		onClick: onClick,
+		text:     text,
+		onSelect: onSelect,
 	}
 	entry.drawer.SetText([]rune(text))
 	entry.drawer.SetFace(theme.FontFaceRegular())
@@ -62,6 +62,12 @@ func (entry *ListEntry) Draw (
 		offset.Add(entry.textPoint))
 }
 
+func (entry *ListEntry) RunSelect () {
+	if entry.onSelect != nil {
+		entry.onSelect()
+	}
+}
+
 func (entry *ListEntry) Bounds () (bounds image.Rectangle) {
 	return entry.bounds
 }

elements/testing/mouse.go

@@ -28,22 +28,23 @@ func NewMouse () (element *Mouse) {
 
 func (element *Mouse) Resize (width, height int) {
 	element.core.AllocateCanvas(width, height)
+	bounds := element.Bounds()
 	artist.FillRectangle (
 		element.core,
 		theme.AccentPattern(),
-		element.Bounds())
+		bounds)
 	artist.StrokeRectangle (
 		element.core,
 		artist.NewUniform(color.Black), 1,
-		element.Bounds())
-	artist.Line (
-		element.core, artist.NewUniform(color.White), 3,
-		image.Pt(1, 1),
-		image.Pt(width - 2, height - 2))
+		bounds)
 	artist.Line (
 		element.core, artist.NewUniform(color.White), 1,
-		image.Pt(1, height - 2),
-		image.Pt(width - 2, 1))
+		image.Pt(1, 1),
+		image.Pt(bounds.Dx() - 2, bounds.Dy() - 2))
+	artist.Line (
+		element.core, artist.NewUniform(color.White), 1,
+		image.Pt(1, bounds.Dy() - 2),
+		image.Pt(bounds.Dx() - 2, 1))
 }
 
 func (element *Mouse) HandleMouseDown (x, y int, button tomo.Button) {