private void ToggleClicked(object sender, EventArgs e)
{
#if DEBUG
var sw = new Stopwatch();
sw.Start();
Trace.Write("MasterDetail Toggling...");
#endif
if (MasterDetail.GetToggleDetailOnClicked(sender as View) || ToggleOnMasterClick)
{
if (!string.IsNullOrEmpty(SelectionGroup) && !IsDetailVisible)
{
if (selectionGroups.ContainsKey(SelectionGroup))
{
var list = selectionGroups[SelectionGroup];
foreach (var c in list)
{
c.IsDetailVisible = false;
}
}
}
IsDetailVisible = !IsDetailVisible;
}
#if DEBUG
sw.Stop();
Trace.WriteLine("MasterDetail Toggled: " + sw.ElapsedMilliseconds);
#endif
}
private static void CreateDetailControls(MasterDetail control)
{
if (control.detailView == null)
{
Layout cached = null;
control.detailViewCached?.TryGetTarget(out cached);
if (cached != null)
{
control.detailView = cached;
}
else
{
control.detailView = control.ViewFromTemplate(control.DetailTemplate, control.DetailBindingContext ?? control.BindingContext);
if (control.detailViewCached == null)
{
control.detailViewCached = new WeakReference <Layout>(control.detailView);
}
else
{
control.detailViewCached.SetTarget(control.detailView);
}
}
}
}
private static void AddDetailControls(MasterDetail control, bool isVisible = false)
{
if (!control.detailAdded)
{
control.detailView.IsVisible = isVisible;
control.Children.Add(control.detailView);
control.detailAdded = true;
}
}
private static void SetOnMasterClick(MasterDetail control)
{
if (!control.toggleClickAssigned && !control.ToggleOnMasterClick)
{
control.toggleClickAssigned = true;
//allow 2 level indentation
Func <Element, bool> assignClick = (Element c) =>
{
if (MasterDetail.GetToggleDetailOnClicked(c))
{
if (c is Button)
{
(c as Button).Clicked += control.ToggleClicked;
}
else if (c is ExtendedLabel)
{
(c as ExtendedLabel).Clicked += control.ToggleClicked;
}
return(true);
}
return(false);
};
foreach (var c in control.masterView.Children)
{
if (c is Layout <View> )
{
foreach (var c2 in (c as Layout <View>).Children)
{
if (assignClick(c2))
{
break;
}
}
}
else if (assignClick(c))
{
break;
}
}
}
}
private void ToggleClicked(object sender, EventArgs e)
{
if (MasterDetail.GetToggleDetailOnClicked(sender as View))
{
if (!string.IsNullOrEmpty(SelectionGroup) && !IsDetailVisible)
{
if (selectionGroups.ContainsKey(SelectionGroup))
{
var list = selectionGroups[SelectionGroup];
foreach (var c in list)
{
c.IsDetailVisible = false;
}
}
}
IsDetailVisible = !IsDetailVisible;
}
}
private static void MasterIsVisibleChanged(BindableObject bindable, object oldValue, object newValue)
{
var control = bindable as MasterDetail;
if (control.MasterTemplate == null)
{
return;
}
if ((bool)newValue)
{
if (control.masterView == null)
{
control.masterView = control.ViewFromTemplate(control.MasterTemplate, control.BindingContext);
if (control.detailAdded)
{
control.Children.Clear();
}
control.Children.Add(control.masterView);
if (control.detailAdded) // JIC, order of calls to master and detail visible change can be any
{
if (control.detailView != null)
{
control.Children.Add(control.detailView);
}
else
{
control.detailAdded = false;
}
}
control.masterAdded = true;
}
else if (!control.masterAdded)
{
if (!control.detailAdded)
{
control.Children.Add(control.masterView);
}
else
{
control.Children.Clear();
control.Children.Add(control.masterView);
if (control.detailView != null)
{
control.Children.Add(control.detailView);
}
}
control.masterAdded = true;
}
else
{
control.masterView.IsVisible = true;
}
if (!control.toggleClickAssigned)
{
control.toggleClickAssigned = true;
//allow 2 level indentation
Func <Element, bool> assignClick = (Element c) =>
{
if (MasterDetail.GetToggleDetailOnClicked(c))
{
if (c is Button)
{
(c as Button).Clicked += control.ToggleClicked;
}
else if (c is ExtendedLabel)
{
(c as ExtendedLabel).Clicked += control.ToggleClicked;
}
return(true);
}
return(false);
};
foreach (var c in control.masterView.Children)
{
if (c is Layout <View> )
{
foreach (var c2 in (c as Layout <View>).Children)
{
if (assignClick(c2))
{
break;
}
}
}
else if (assignClick(c))
{
break;
}
}
}
}
else // hide Master
{
if (control.MasterDestroyInvisible && control.masterAdded)
{
control.Children.Remove(control.masterView);
control.masterAdded = false;
}
else if (control.masterView != null)
{
control.masterView.IsVisible = false;
}
}
}