Raise event from custom widget.

[heejit]

the card widget is working fine thanks.

I want to raise click event on click of a card(added the clickable interaction) for now I am using call back is that the right way ??

Here is full card widget code :

//go:generate core generate

package main

import (
	"cogentcore.org/core/styles/abilities"
	"cogentcore.org/core/styles/states"
	"cogentcore.org/core/colors"
	"cogentcore.org/core/events"
	"cogentcore.org/core/styles/units"
	"cogentcore.org/core/core"
	"cogentcore.org/core/styles"
	"cogentcore.org/core/tree"
	"time"
)

type Card struct {
	core.Frame
	ClickCallback func(v *Card)
	Heading    string
	SubHeading string
	Data       interface{}
}

func (cd *Card) Init() {
	cd.Frame.Init()
	cd.Frame.OnClick(cd.onClickEvent)

	tree.AddChild(cd, func(w *core.Text) {
		w.SetType(core.TextHeadlineSmall)
		w.Updater(func() {
			w.SetText(cd.Heading)
		})
		w.OnClick(cd.onClickEvent)
	})

	tree.AddChild(cd, func(w *core.Text) {
		w.Updater(func() {
			w.SetText(cd.SubHeading)
		})
		w.OnClick(cd.onClickEvent)
	})

	cd.Styler(func (s *styles.Style) {
		s.Direction = styles.Column
		s.Grow.Set(1, 0)
		s.Border.Width.Set(units.Dp(4))
		s.Border.Color.Set(colors.Scheme.Outline)
		s.SetAbilities(true, abilities.Selectable)
	})
}

func (cd *Card) showSelected() {
	vTimer := time.NewTimer(200 * time.Millisecond)
	<-vTimer.C
	cd.AsyncLock()
	cd.SetState(false, states.Focused)
	cd.Update()
	cd.AsyncUnlock()
}

func (cd *Card) onClickEvent(e events.Event) {
	cd.SetState(true, states.Focused)
	cd.Update()
	cd.ClickCallback(cd)
	go cd.showSelected()
}

This how creating it  as per you suggestion 
	this.CardFrame = core.NewFrame(vFrame1)
	this.CardFrame.Styler(func (s *styles.Style) {
		s.Direction = styles.Column
		s.Grow.Set(1, 1)
		s.Overflow.Set(styles.OverflowAuto)
	})
	this.CardFrame.Maker(func(p *tree.Plan) {
		for i, vData := range this.TableDatas {
			tree.AddAt(p, strconv.Itoa(i), func(w *Card) {
				w.SetHeading(vData.Name)
				w.SetSubHeading(fmt.Sprintf("ID=%s | Time=%s", vData.Id, vData.Time))
				w.SetData(vData.Id)
				w.SetClickCallback(this.OnCardClick)
			})
		}
	})

[kkoreilly]

That is probably not the best approach. First, you should add abilities.Activatable to your cd.Styler s.SetAbilities call. Then, you can do s.SetNonSelectable in Stylers for the text elements, which should result in all click events going to the card frame. As such, you can just add the OnClick event handler directly to the card widget in your this.CardFrame.Maker function using w.OnClick instead of setting it as a separate field.

[heejit]

it works thanks.