(*
to compile use:
fsc FebKit.fs -r "/usr/lib/cli/webkit-sharp-1.0/webkit-sharp.dll" -r "/usr/lib/mono/gtk-sharp-2.0/gtk-sharp.dll" -r "/usr/lib/mono/gtk-sharp-2.0/gdk-sharp.dll" -r "/usr/lib/mono/gtk-sharp-2.0/atk-sharp.dll" -r "/usr/lib/mono/gtk-sharp-2.0/glib-sharp.dll"
*)

#light

open System
open WebKit
open Gtk

Gtk.Application.Init()

let url = "http://piotrzurek.net" 
let window = new Window("FebKit")
let webViewContainer = new ScrolledWindow()
let webView = new WebView()
let toolbar = new Toolbar()
let urlToolItem = new ToolItem();
let urlEntry = new Entry(url)
let addressHBox = new HBox()
let statusbar = new Statusbar()
let vBox = new VBox()
let backAction = new Action("back", "Go Back", null, "gtk-go-back")
let forwardAction = new Action("forward", "Go Forward", null, "gtk-go-forward")
let stopAction = new Action("stop", "Stop", null, "gtk-stop")
let refreshAction = new Action("refresh", "Refresh", null, "gtk-refresh")

let openUrl address =
    webView.Open(address)
    urlEntry.Text <- address

let setWindowTitle title = 
    if String.IsNullOrEmpty(title) then window.Title <- "FebKit"
    else window.Title <- title

let commitLoad uri =
    urlEntry.Text <- uri
    stopAction.Sensitive <- true
    refreshAction.Sensitive <- false
    //updateBackForwardButtons

(*
let disableButtons = 
    backAction.Sensitive <- false
    forwardAction.Sensitive <- false
    stopAction.Sensitive <- false
    refreshAction.Sensitive <- false

let updateBackForwardButtons =
    backAction.Sensitive <- webView.CanGoBack()
    forwardAction.Sensitive <- webView.CanGoForward()
*)

let finishLoad wView =
    stopAction.Sensitive <- false
    refreshAction.Sensitive <- true
    //updateBackForwardButtons

webView.Editable <- false
webView.MaintainsBackForwardList <- true
webView.TitleChanged.Add(fun e -> setWindowTitle e.Title)
webView.LoadCommitted.Add(fun e -> commitLoad(e.Frame.Uri))
webView.LoadFinished.Add(fun _ -> finishLoad(webView))
webView.HoveringOverLink.Add(fun args -> if args.Link = null then ignore()
                                         else statusbar.Push((uint32)1, args.Link) |> ignore)

urlToolItem.Expand <- true
urlEntry.Activated.Add(fun _ -> webView.Open(urlEntry.Text))

backAction.Activated.Add(fun _ -> webView.GoBack())
forwardAction.Activated.Add(fun _ -> webView.GoForward())
stopAction.Activated.Add(fun _ -> webView.StopLoading())
refreshAction.Activated.Add(fun _ -> webView.Reload())

urlToolItem.Add(urlEntry)
toolbar.BorderWidth <- (uint32)6
toolbar.ToolbarStyle <- ToolbarStyle.Icons
toolbar.Add(backAction.CreateToolItem())
toolbar.Add(forwardAction.CreateToolItem())
toolbar.Add(stopAction.CreateToolItem())
toolbar.Add(refreshAction.CreateToolItem())
toolbar.Add(urlToolItem)
webViewContainer.ShadowType <- ShadowType.EtchedIn
webViewContainer.Add(webView)

vBox.PackStart(toolbar, false, false, (uint32)0)
vBox.PackStart(webViewContainer)
vBox.PackEnd(statusbar, false, false, (uint32)0)

window.Add(vBox)

window.WindowPosition <- Gtk.WindowPosition.Center
window.SetDefaultSize(1200, 800)
window.Destroyed.Add(fun _ -> Application.Quit())

webView.Open(url)
window.ShowAll()

Gtk.Application.Run()