/*

Package gui implements a abstraction layer for Go visual elements in
a cross platform and library independent way. (hopefully this is will work)

A quick overview of the features, some general design guidelines
and principles for how this package should generally work:

Definitions:

	* Toolkit: the underlying library (MacOS gui, Windows gui, gtk, qt, etc)
	* Node: A binary tree of all the underlying GUI toolkit elements

Principles:

	* Make code using this package simple to use
	* When in doubt, search upward in the binary tree
	* It's ok to guess. We will return something close.
	* Hide complexity internally here
	* Isolate the GUI toolkit
	* Function names should follow [Wikipedia Graphical widget]


Quick Start

This section demonstrates how to quickly get started with spew.  See the
sections below for further details on formatting and configuration options.

	// This creates a simple hello world window
	package main

	import 	(
		"log"
		"git.wit.org/wit/gui"
	)

	var window *gui.Node // This is the beginning of the binary tree of widgets

	// go will sit here until the window exits
	func main() {
		gui.Main(helloworld)
	}

	// This initializes the first window and 2 tabs
	func helloworld() {
		gui.Config.Title = "Hello World golang wit/gui Window"
		gui.Config.Width = 640
		gui.Config.Height = 480

		window := gui.NewWindow()
		addTab(window, "A Simple Tab Demo")
		addTab(window, "A Second Tab")
	}

	func addTab(w *gui.Node, title string) {
		tab := w.NewTab(title)

		group := tab.NewGroup("foo bar")
		group.NewButton("hello", func() {
			log.Println("world")
		})
	}


Debian Build

This worked on debian sid on 2022/10/20
I didn't record the dependances needed

	GO111MODULE="off" go get -v -t -u git.wit.org/wit/gui
	cd ~/go/src/git.wit.org/wit/gui/cmds/helloworld/
	GO111MODULE="off" go build -v -x
	./helloworld

Toolkits

The goal is to design something that will work with more than one.

Right now, this abstraction is built on top of the go package 'andlabs/ui'
which does the cross platform support.
The next step is to intent is to allow this to work directly against GTK and QT.

It should be able to add Fyne, WASM, native macos & windows, android and
hopefully also things like libSDL, faiface/pixel, slint

[Wikipedia Graphical widget]: https://en.wikipedia.org/wiki/Graphical_widget

Errors

Since it is possible for custom Stringer/error interfaces to panic, spew
detects them and handles them internally by printing the panic information
inline with the output.  Since spew is intended to provide deep pretty printing
capabilities on structures, it intentionally does not return any errors.

Debugging

To dump variables with full newlines, indentation, type, and pointer
information this uses spew.Dump()

Bugs

"The author's idea of friendly may differ to that of many other people."

-- manpage quote from the excellent minimalistic window manager 'evilwm'

External References

*/
package gui