debugui: refactoring remove error from gridCell callback

Author: hajimehoshi

layout.go

@@ -85,17 +85,16 @@ func (c *Context) popLayout() error {
 
 func (c *Context) GridCell(f func(bounds image.Rectangle)) {
 	_ = c.wrapEventHandlerAndError(func() (EventHandler, error) {
-		if err := c.gridCell(func(bounds image.Rectangle) error {
+		if err := c.gridCell(func(bounds image.Rectangle) {
 			f(bounds)
-			return nil
 		}); err != nil {
 			return nil, err
 		}
 		return nil, nil
 	})
 }
 
-func (c *Context) gridCell(f func(bounds image.Rectangle) error) error {
+func (c *Context) gridCell(f func(bounds image.Rectangle)) error {
 	_, err := c.widget(emptyWidgetID, 0, func(bounds image.Rectangle, wasFocused bool) (e EventHandler, err error) {
 		if err := c.pushLayout(bounds, image.Pt(0, 0), false); err != nil {
 			return nil, err
@@ -105,9 +104,7 @@ func (c *Context) gridCell(f func(bounds image.Rectangle) error) error {
 				err = err2
 			}
 		}()
-		if err := f(bounds); err != nil {
-			return nil, err
-		}
+		f(bounds)
 		b := &c.layoutStack[len(c.layoutStack)-1]
 		// inherit position/next_row/max from child layout if they are greater
 		a := &c.layoutStack[len(c.layoutStack)-2]

text.go

@@ -64,17 +64,14 @@ func lines(text string, width int) iter.Seq[string] {
 // Text creates a text label.
 func (c *Context) Text(text string) {
 	_ = c.wrapEventHandlerAndError(func() (EventHandler, error) {
-		if err := c.gridCell(func(bounds image.Rectangle) error {
+		if err := c.gridCell(func(bounds image.Rectangle) {
 			c.SetGridLayout([]int{-1}, []int{lineHeight()})
 			for line := range lines(text, bounds.Dx()-c.style().padding) {
-				if _, err := c.widget(emptyWidgetID, 0, func(bounds image.Rectangle, wasFocused bool) (EventHandler, error) {
+				_, _ = c.widget(emptyWidgetID, 0, func(bounds image.Rectangle, wasFocused bool) (EventHandler, error) {
 					c.drawWidgetText(line, bounds, colorText, 0)
 					return nil, nil
-				}); err != nil {
-					return err
-				}
+				})
 			}
-			return nil
 		}); err != nil {
 			return nil, err
 		}