Heading no longer embeds tomo.TextBox

heading.go

@@ -2,30 +2,73 @@ package objects
 
 import "fmt"
 import "git.tebibyte.media/tomo/tomo"
+import "git.tebibyte.media/tomo/tomo/text"
+import "git.tebibyte.media/tomo/tomo/event"
+
+var _ tomo.Object = new(Heading)
 
 // Heading is a label that denotes the start of some section of content. It can
 // have a level from 0 to 2, with 0 being the most prominent and 2 being the
 // most subtle. The level is described in the role variation.
 type Heading struct {
-	tomo.TextBox
+	box tomo.TextBox
 }
 
 // NewHeading creates a new section heading. The level can be from 0 to 2.
 func NewHeading (level int, text string) *Heading {
 	if level < 0 { level = 0 }
 	if level > 2 { level = 2 }
-	this := &Heading { TextBox: tomo.NewTextBox() }
-	this.SetRole(tomo.R("objects", "Heading"))
-	this.SetTag(fmt.Sprint(level), true)
+	this := &Heading { box: tomo.NewTextBox() }
+	this.box.SetRole(tomo.R("objects", "Heading"))
+	this.box.SetTag(fmt.Sprint(level), true)
 	this.SetText(text)
-	this.SetSelectable(true)
-	this.SetFocusable(true)
+	this.box.SetSelectable(true)
+	this.box.SetFocusable(true)
 	return this
 }
 
+// GetBox returns the underlying box.
+func (this *Heading) GetBox () tomo.Box {
+	return this.box
+}
+
+// SetFocused sets whether or not this heading has keyboard focus. If set to
+// true, this method will steal focus away from whichever object currently has
+// focus.
+func (this *Heading) SetFocused (focused bool) {
+	this.box.SetFocused(focused)
+}
+
+// SetText sets the text content of the heading.
+func (this *Heading) SetText (text string) {
+	this.box.SetText(text)
+}
+
+// SetSelectable sets whether or not the text content can be highlighted/
+// selected.
+func (this *Heading) SetSelectable (selectable bool) {
+	this.box.SetSelectable(selectable)
+}
+
+// Select sets the text cursor or selection.
+func (this *Heading) Select (dot text.Dot) {
+	this.box.Select(dot)
+}
+
+// Dot returns the text cursor or selection.
+func (this *Heading) Dot () text.Dot {
+	return this.box.Dot()
+}
+
+// OnDotChange specifies a function to be called when the text cursor or
+// selection changes.
+func (this *Heading) OnDotChange (callback func ()) event.Cookie {
+	return this.box.OnDotChange(callback)
+}
+
 // NewMenuHeading creatss a new heading for use in menus.
 func NewMenuHeading (text string) *Heading {
 	heading := NewHeading(0, text)
-	heading.SetTag("menu", true)
+	heading.box.SetTag("menu", true)
 	return heading
 }