Fixed style application

internal/system/box.go

@@ -479,6 +479,7 @@ func (this *box) setParent (parent parent) {
 		this.SetFocused(false)
 	}
 	this.parent = parent
+	this.recursiveReApply()
 }
 
 func (this *box) getParent () parent {
@@ -527,6 +528,8 @@ func (this *box) invalidateMinimum () {
 }
 
 func (this *box) recursiveReApply () {
+	if this.getHierarchy() == nil { return }
+	
 	// re-apply styling, icons *if needed*
 
 	// style

internal/system/hierarchy.go

@@ -13,10 +13,6 @@ type Hierarchy struct {
 	system *System
 	canvas canvas.Canvas
 	
-	style tomo.Style
-	styleNonce int
-	iconsNonce int
-	
 	root    anyBox
 	focused anyBox
 	hovered anyBox
@@ -146,14 +142,11 @@ func (this *Hierarchy) Close () {
 	this.system.removeHierarchy(this)
 }
 
-func (this *Hierarchy) setStyle (style tomo.Style) {
+func (this *Hierarchy) setStyle () {
-	this.style = style
-	this.styleNonce ++
 	if this.root != nil { this.root.recursiveReApply() }
 }
 
-func (this *Hierarchy) setIcons (icons tomo.Icons) {
+func (this *Hierarchy) setIcons () {
-	this.iconsNonce ++
 	if this.root != nil { this.root.recursiveReApply() }
 }
 
@@ -166,15 +159,15 @@ func (this *Hierarchy) getWindow () tomo.Window {
 }
 
 func (this *Hierarchy) getStyle () tomo.Style {
-	return this.style
+	return this.system.style
 }
 
 func (this *Hierarchy) getStyleNonce () int {
-	return this.styleNonce
+	return this.system.styleNonce
 }
 
 func (this *Hierarchy) getIconsNonce () int {
-	return this.iconsNonce
+	return this.system.iconsNonce
 }
 
 func (this *Hierarchy) getCanvas () canvas.Canvas {

internal/system/system.go

@@ -10,6 +10,11 @@ import "git.tebibyte.media/tomo/backend/internal/util"
 // and Boxes.
 type System struct {
 	link BackendLink
+
+	style      tomo.Style
+	styleNonce int
+	iconsNonce int
+	
 	hierarchies util.Set[*Hierarchy]
 }
 
@@ -41,15 +46,18 @@ func New (link BackendLink) *System {
 // SetStyle sets the tomo.Style that is applied to objects, and notifies them
 // that the style has changed.
 func (this *System) SetStyle (style tomo.Style) {
+	this.style = style
+	this.styleNonce ++
 	for hierarchy := range this.hierarchies {
-		hierarchy.setStyle(style)
+		hierarchy.setStyle()
 	}
 }
 
 // SetIcons notifies objects that the icons have changed.
 func (this *System) SetIcons (icons tomo.Icons) {
+	this.iconsNonce ++
 	for hierarchy := range this.hierarchies {
-		hierarchy.setIcons(icons)
+		hierarchy.setIcons()
 	}
 }