DocTabs

The DocTabs container manages a set of open documents, in the way that a text editor or a web browser presents its tabs. It works much like AppTabs - each panel of content is a container.TabItem - but the tabs are designed to come and go as the user works, so each one includes a close button and the bar will scroll when there are more tabs than fit.

Create the container with container.NewDocTabs(...), passing any items that should be open to begin with. Append(...) and Remove(...) change the list later.

The behavior is driven by callbacks. Set CreateTab to a function returning a new *TabItem and the container will show a “+” button that lets the user open a document. OnSelected and OnClosed tell you when the user switches or closes a tab. If a document has unsaved changes you can set CloseIntercept - when that is set the tab is not closed automatically, instead your function is called and it is up to you to prompt the user and call Remove(...) if they confirm.

As with AppTabs, SetTabLocation(...) moves the bar to another edge.

  package main

import (
	"fmt"

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

func main() {
	myApp := app.New()
	myWindow := myApp.NewWindow("DocTabs Container")

	count := 2
	tabs := container.NewDocTabs(
		container.NewTabItem("Doc 1", widget.NewLabel("Content of document 1")),
		container.NewTabItem("Doc 2", widget.NewLabel("Content of document 2")),
	)

	tabs.CreateTab = func() *container.TabItem {
		count++
		return container.NewTabItem(fmt.Sprintf("Doc %d", count),
			widget.NewLabel(fmt.Sprintf("Content of document %d", count)))
	}

	myWindow.SetContent(tabs)
	myWindow.Resize(fyne.NewSize(400, 300))
	myWindow.ShowAndRun()
}