tableview.go

package main

import (
	"runtime"

	"github.com/progrium/darwinkit/macos/appkit"
	"github.com/progrium/darwinkit/macos/foundation"
	"github.com/progrium/darwinkit/objc"
)

const (
	RowHeight = 20
)

type App struct {
	app appkit.Application
}

func main() {
	runtime.LockOSThread()

	app := appkit.Application_SharedApplication()
	tvApp := &App{app}
	delegate := &appkit.ApplicationDelegate{}
	delegate.SetApplicationDidFinishLaunching(func(foundation.Notification) {
		tvApp.mainWindow()
	})
	delegate.SetApplicationWillFinishLaunching(func(foundation.Notification) {
		tvApp.setMainMenu()
	})
	delegate.SetApplicationShouldTerminateAfterLastWindowClosed(func(appkit.Application) bool {
		return true
	})

	app.SetDelegate(delegate)
	app.Run()
}

func (a *App) mainWindow() {
	w := appkit.NewWindowWithSize(300, 400)
	objc.Retain(&w)

	wd := &appkit.WindowDelegate{}
	w.SetDelegate(wd)
	w.SetTitle("Test table view")

	tableView := appkit.NewTableView()
	tableView.SetRowHeight(RowHeight)
	tableView.SetTranslatesAutoresizingMaskIntoConstraints(false)
	tableView.SetHeaderView(appkit.NewTableHeaderViewWithFrame(rectOf(0, 0, 0, RowHeight)))
	tableView.SetGridStyleMask(appkit.TableViewSolidVerticalGridLineMask | appkit.TableViewSolidHorizontalGridLineMask)
	tableView.SetStyle(appkit.TableViewStylePlain)
	tableView.SetRowSizeStyle(appkit.TableViewRowSizeStyleDefault)
	tableView.SetColumnAutoresizingStyle(appkit.TableViewUniformColumnAutoresizingStyle)
	tableView.SetUsesAlternatingRowBackgroundColors(true)
	tableView.SetStyle(appkit.TableViewStyleFullWidth)
	tableView.SetTranslatesAutoresizingMaskIntoConstraints(false)
	tableColumn1 := appkit.NewTableColumn().InitWithIdentifier("Column1")
	tableColumn1.SetTitle("Test 1")
	tableColumn1.SetWidth(100)
	tableView.AddTableColumn(tableColumn1)
	tableColumn2 := appkit.NewTableColumn().InitWithIdentifier("Column2")
	tableColumn2.SetTitle("Test 2")
	tableColumn2.SetWidth(100)
	tableView.AddTableColumn(tableColumn2)
	tableView.SetAllowsColumnSelection(true)
	tableView.SetAutoresizingMask(appkit.ViewWidthSizable | appkit.ViewHeightSizable)

	tds := &TableViewDataSource{
		Data: []map[string]string{
			{"Column1": "Value1", "Column2": "Value2"},
			{"Column1": "Value3", "Column2": "Value4"},
		}}
	tdsP := objc.WrapAsProtocol("NSTableViewDataSource", any(tds))
	objc.SetAssociatedObject(tableView, objc.AssociationKey("setDataSource"), tdsP, objc.ASSOCIATION_RETAIN)
	objc.Call[objc.Void](tableView, objc.Sel("setDataSource:"), tdsP)

	tsv := appkit.NewScrollView()
	tsv.SetFrameSize(foundation.Size{Width: w.ContentView().Frame().Size.Width, Height: w.ContentView().Frame().Size.Height})
	tsv.SetFrameOrigin(foundation.Point{X: w.ContentView().Frame().Origin.X, Y: w.ContentView().Frame().Origin.Y})
	tsv.SetTranslatesAutoresizingMaskIntoConstraints(false)
	tsv.SetDocumentView(tableView)
	tsv.SetHasHorizontalScroller(true)
	tsv.SetHasVerticalScroller(true)
	tsv.SetAutohidesScrollers(true)
	tsv.SetTranslatesAutoresizingMaskIntoConstraints(true)
	tsv.SetAutoresizingMask(appkit.ViewWidthSizable | appkit.ViewHeightSizable)
	w.ContentView().AddSubview(tsv)
	w.ContentView().LeadingAnchor().ConstraintEqualToAnchorConstant(tsv.LeadingAnchor(), -10).SetActive(true)
	w.ContentView().TopAnchor().ConstraintEqualToAnchorConstant(tsv.TopAnchor(), -10).SetActive(true)
	w.ContentView().TrailingAnchor().ConstraintEqualToAnchorConstant(tsv.TrailingAnchor(), 10).SetActive(true)
	w.ContentView().BottomAnchor().ConstraintEqualToAnchorConstant(tsv.BottomAnchor(), 10).SetActive(true)

	w.Center()
	w.MakeKeyAndOrderFront(nil)

	a.app.SetActivationPolicy(appkit.ApplicationActivationPolicyRegular)
	a.app.ActivateIgnoringOtherApps(true)
}

func (a *App) setMainMenu() {
	menuBar := appkit.NewMenuWithTitle("Table View")
	a.app.SetMainMenu(menuBar)

	appMenuItem := appkit.NewMenuItemWithSelector("Table View", "", objc.Selector{})
	appMenu := appkit.NewMenuWithTitle("Table View")
	appMenu.AddItem(appkit.NewMenuItemWithAction("Quit", "q", func(sender objc.Object) { a.app.Terminate(nil) }))
	appMenuItem.SetSubmenu(appMenu)
	menuBar.AddItem(appMenuItem)
}

func rectOf(x, y, width, height float64) foundation.Rect {
	return foundation.Rect{Origin: foundation.Point{X: x, Y: y}, Size: foundation.Size{Width: width, Height: height}}
}

type TableViewDataSource struct {
	Data []map[string]string
}

func (t *TableViewDataSource) NumberOfRowsInTableView(tableView appkit.TableView) int {
	return len(t.Data)
}

func (t *TableViewDataSource) TableViewObjectValueForTableColumnRow(tableView appkit.TableView, tableColumn appkit.TableColumn, row int) objc.Object {
	return foundation.String_StringWithString(t.Data[row][string(tableColumn.Identifier())]).Object
}