void ActiveItemChanged(object x)
{
lock (ScreenHistory) {
//var goingBack = ScreenIndex < ScreenHistory.Count() - 1;
if (_goingBack || _goingForward)
{
_goingBack = false;
_goingForward = false;
}
else
{
var newIndex = ScreenIndex + 1;
var toRemove = ScreenHistory.Count() - newIndex;
if (toRemove > 0)
{
ScreenHistory.RemoveRange(newIndex, toRemove);
}
ScreenHistory.Add(x);
ScreenIndex = newIndex;
}
}
}
protected override void OnInitialize()
{
using (this.Bench()) {
base.OnInitialize();
this.WhenAnyValue(x => x.Connect.IsEnabled)
.Select(x => x ? DefaultContactListWidth : 0).BindTo(this, x => x.ContactListWidth);
// Workaround for screens..
object previous = null;
this.WhenAnyObservable(x => x.Router.CurrentViewModel)
.Subscribe(x => {
var deactivatable = previous as IDeactivate;
if (deactivatable != null)
{
deactivatable.Deactivate(false);
}
var activable = x as IScreen;
if (activable != null)
{
activable.Activate();
}
previous = x;
});
this.WhenAnyObservable(x => x.Router.CurrentViewModel)
.Select(x => x as IHaveOverlay)
.BindTo(this, x => x.HasOverlay);
this.WhenAnyValue(x => x.HasOverlay.Overlay)
.BindTo(this, x => x.SubOverlay);
var dm = Common.Flags.Verbose ? " (diagnostics mode)" : null;
_systemInfo.WhenAnyValue(x => x.IsInternetAvailable)
.Select(x => (x ? "Ready" : "Offline") + dm)
.BindTo(this, x => x.ConnectionStatus);
this.WhenAnyValue(x => x.UserSettings.AppOptions.AutoAdjustLibraryViewType, x => x.Width,
x => x.WindowState,
x => x.Connect.IsEnabled,
(w, x, y, z) => w)
.Where(x => x)
.Subscribe(x => UpdateGridMode());
InitialWindowHandling();
this.WhenAnyValue(x => x.Content.ActiveItem)
.Subscribe(ActiveItemChanged);
this.WhenAnyValue(x => x.Home.CanGoBack, x => x.Home.CanGoForward, x => x.ScreenHistory.Count,
x => x.ScreenIndex, x => x.Content.ActiveItem,
(b, f, c, i, m) =>
new {
CanGoBack = (c > 1 && i > 0) || (m == Home && Home.CanGoBack),
CanGoForward =
(c > 1 && i < ScreenHistory.Count() - 1) ||
(m == Home && Home.CanGoForward)
}).Subscribe(x => {
CanGoBack = x.CanGoBack;
CanGoForward = x.CanGoForward;
});
Overlay.ConductWith(this);
Overlay.Parent = this;
Connect.ConductWith(this);
Connect.Parent = this;
Router.Navigate.Execute(Content);
}
}