Adding Tapped method to a label in a list alters keyboard behaviour...

[bobhibberdine2]

Hello All,

I have a list of extended Labels.
The Label is extended to implement the Tappable interface.
This allows me to have 2 actions on a list item: One when selecting the Item and a second when Tapping on the selected item. This all works as expected... Except that it appears to break the ability to scroll through the list using the keyboard!
Here's the code

package main

import (
"fmt"

"fyne.io/fyne/v2"
"fyne.io/fyne/v2/app"
"fyne.io/fyne/v2/container"
"fyne.io/fyne/v2/widget"

)

var highlightedListItem int = 0
var selectedListItem int = 0

type Lbl struct {
*widget.Label
OnTapped func() json:"-"

}

func (lbl *Lbl) Tapped(pe *fyne.PointEvent) {
if lbl.OnTapped != nil {
lbl.OnTapped()
}
}
func (lbl *Lbl) TappedSecondary(*fyne.PointEvent) {
println("TappedSecondary")
}

func NewLblWithStyle(text string, alignment fyne.TextAlign, style fyne.TextStyle, tapped func()) *Lbl {
return &Lbl{
widget.NewLabelWithStyle(text, alignment, style),
tapped,
}
}

func NewLbl(text string, tapped func()) *Lbl {
return NewLblWithStyle(text, fyne.TextAlignLeading, fyne.TextStyle{}, tapped)
}

func main() {
//var selectedIndex int = 0
app := app.New()
win := app.NewWindow("BASIC LIST")

data := []string{"one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten"}

var l *widget.List
tappedfunc := func(){
	if highlightedListItem == selectedListItem {
		// Selected item tapped 
		println("Selected item Tapped", data[selectedListItem])
	} else {
		// Highlighted item tapped so select the command
		l.Select(highlightedListItem)
	}
}

l = widget.NewList(
	func() int {
		return len(data)
	},
	func() fyne.CanvasObject {
		return NewLbl("", tappedfunc)
	},
	func(id widget.ListItemID, o fyne.CanvasObject) {
		o.(*Lbl).SetText(data[id])
	},
)

	// Save the highlighted item list index
l.OnHighlighted = func(id widget.ListItemID) {
	highlightedListItem = id
}


l.OnSelected = func(id widget.ListItemID) {
	selectedListItem = id
	fmt.Println("Selected ", data[id])

}


c := container.NewBorder(nil, nil, nil, nil,l,)

win.SetContent(c)
win.CenterOnScreen()
win.Resize(fyne.NewSize(1024, 760))
win.ShowAndRun()

}

Have I neglected to call some base function in my extension or is this a bug of some kind?

Thanks for your help...
Bob

[andydotxyz]

I'm guessing this is because interacting with the Label means that the List is no longer focused.
You could work around that by asking the Window canvas to focus the List again after the Label is tapped.
(i.e. win.Canvas().Focus(theList) )

[bobhibberdine2]

Brilliant! That worked a treat.
Thank you so much :-))

[lordofscripts]

I too found myself extending Label to include Instap although it would have been better (in my case) to have it on the Image widget.