package main

import (
	"fyne.io/fyne/v2"
	"fyne.io/fyne/v2/app"
	"fyne.io/fyne/v2/widget"
)

var data = []string{"a", "string", "list"}

func main() {
	myApp := app.New()
	myWindow := myApp.NewWindow("List Widget")

	list := widget.NewList(
		func() int {
			return len(data)
		},
		func() fyne.CanvasObject {
			return widget.NewLabel("template")
		},
		func(i widget.ListItemID, o fyne.CanvasObject) {
			o.(*widget.Label).SetText(data[i])
		})

	myWindow.Resize(fyne.NewSize(300, 600))
	myWindow.SetContent(list)

	var table_data = [][]string{[]string{"top left", "top right"},
		[]string{"bottom left", "bottom right"}}

	table := widget.NewTable(
		func() (int, int) {
			return len(table_data), len(table_data[0])
		},
		func() fyne.CanvasObject {
			return widget.NewLabel("template")
		},
		func(i widget.TableCellID, o fyne.CanvasObject) {
			o.(*widget.Label).SetText(table_data[i.Row][i.Col])
		})

	tableWindow := myApp.NewWindow("Table Widget")
	tableWindow.Resize(fyne.NewSize(300, 600))
	tableWindow.SetContent(table)
	tableWindow.Show()

	treeWindow := myApp.NewWindow("tree Widget")

	tree := widget.NewTree(
		func(id widget.TreeNodeID) []widget.TreeNodeID {
			switch id {
			case "":
				return []widget.TreeNodeID{"a", "b", "c"}
			case "a":
				return []widget.TreeNodeID{"a1", "a2"}
			}
			return []string{}
		},
		func(id widget.TreeNodeID) bool {
			return id == "" || id == "a"
		},
		func(branch bool) fyne.CanvasObject {
			if branch {
				return widget.NewLabel("Branch template")
			}
			return widget.NewLabel("Leaf template")
		},
		func(id widget.TreeNodeID, branch bool, o fyne.CanvasObject) {
			text := id
			if branch {
				text += " (branch)"
			}
			o.(*widget.Label).SetText(text)
		})

	treeWindow.SetContent(tree)
	treeWindow.Resize(fyne.NewSize(300, 600))
	treeWindow.Show()

	myWindow.ShowAndRun()
}