private void TryRestoreSelectedIndex(Activity activity, ActionBar actionBar)
{
if (actionBar.GetNavigationMode() == ActionBarNavigationMode.Standard)
{
return;
}
bool result;
if (bool.TryParse(RestoreTabSelectedIndex, out result) && !result)
{
return;
}
var activityView = activity as IActivityView;
if (activityView == null)
{
return;
}
if (_activityViewOnSaveInstanceStateDelegate == null)
{
_activityViewOnSaveInstanceStateDelegate = ActivityViewOnSaveInstanceState;
}
activityView.Mediator.SaveInstanceState += _activityViewOnSaveInstanceStateDelegate;
var bundle = activityView.Mediator.Bundle;
if (bundle != null)
{
var i = bundle.GetInt(SelectedTabIndexKey, int.MinValue);
if (i != int.MinValue && i != actionBar.SelectedNavigationIndex)
{
actionBar.SetSelectedNavigationItem(i);
}
}
}
private static void ActionBarSelectedItemChanged(ActionBar actionBar, AttachedMemberChangedEventArgs <object> args)
{
switch (actionBar.GetNavigationMode())
{
case ActionBarNavigationMode.List:
#if APPCOMPAT
var adapter = actionBar.GetBindingMemberValue(AttachedMembersCompat.ActionBar.ItemsSourceAdapter);
#else
var adapter = actionBar.GetBindingMemberValue(AttachedMembers.ActionBar.ItemsSourceAdapter);
#endif
if (adapter == null || adapter.ItemsSource == null)
{
return;
}
if (args.NewValue == null)
{
args.Member.SetSingleValue(actionBar, adapter.GetRawItem(actionBar.SelectedNavigationIndex));
}
else
{
actionBar.SetSelectedNavigationItem(adapter.GetPosition(args.NewValue));
}
break;
case ActionBarNavigationMode.Tabs:
#if APPCOMPAT
var tabGenerator = actionBar.GetBindingMemberValue(AttachedMembersCompat.ActionBar.ItemsSourceGenerator) as IItemsSourceGeneratorEx;
#else
var tabGenerator = actionBar.GetBindingMemberValue(AttachedMembers.ActionBar.ItemsSourceGenerator) as IItemsSourceGeneratorEx;
#endif
if (tabGenerator == null)
{
var tabValue = args.NewValue as ActionBar.Tab;
if (tabValue != null && tabValue.Position != actionBar.SelectedNavigationIndex)
{
tabValue.Select();
}
}
else
{
if (args.NewValue == null)
{
object ctx = actionBar.SelectedNavigationIndex < 0 ? null : actionBar.SelectedTab;
if (ctx != null)
{
ctx = ctx.DataContext();
}
args.Member.SetSingleValue(actionBar, ctx);
}
else
{
tabGenerator.SelectedItem = args.NewValue;
}
}
break;
}
}
private static void ActionBarUpdateItemsSource(ActionBar actionBar)
{
switch (actionBar.GetNavigationMode())
{
case ActionBarNavigationMode.List:
#if APPCOMPAT
IItemsSourceAdapter sourceAdapter = actionBar.GetBindingMemberValue(AttachedMembersCompat.ActionBar.ItemsSourceAdapter);
#else
IItemsSourceAdapter sourceAdapter = actionBar.GetBindingMemberValue(AttachedMembers.ActionBar.ItemsSourceAdapter);
#endif
if (sourceAdapter == null)
{
sourceAdapter = AndroidToolkitExtensions.ItemsSourceAdapterFactory(actionBar, actionBar.ThemedContext, DataContext.Empty);
#if APPCOMPAT
actionBar.SetBindingMemberValue(AttachedMembersCompat.ActionBar.ItemsSourceAdapter, sourceAdapter);
#else
actionBar.SetBindingMemberValue(AttachedMembers.ActionBar.ItemsSourceAdapter, sourceAdapter);
#endif
actionBar.SetListNavigationCallbacks(sourceAdapter, new ActionBarNavigationListener(actionBar));
}
#if APPCOMPAT
sourceAdapter.ItemsSource = actionBar.GetBindingMemberValue(AttachedMembersCompat.ActionBar.ItemsSource);
#else
sourceAdapter.ItemsSource = actionBar.GetBindingMemberValue(AttachedMembers.ActionBar.ItemsSource);
#endif
break;
case ActionBarNavigationMode.Standard:
#if APPCOMPAT
actionBar.SetBindingMemberValue(AttachedMembersCompat.ActionBar.SelectedItem, BindingExtensions.NullValue);
#else
actionBar.SetBindingMemberValue(AttachedMembers.ActionBar.SelectedItem, BindingExtensions.NullValue);
#endif
actionBar.SetListNavigationCallbacks(null, null);
#if APPCOMPAT
actionBar.GetBindingMemberValue(AttachedMembersCompat.ActionBar.ItemsSourceGenerator)?.SetItemsSource(null);
var adapter = actionBar.GetBindingMemberValue(AttachedMembersCompat.ActionBar.ItemsSourceAdapter);
#else
actionBar.GetBindingMemberValue(AttachedMembers.ActionBar.ItemsSourceGenerator)?.SetItemsSource(null);
var adapter = actionBar.GetBindingMemberValue(AttachedMembers.ActionBar.ItemsSourceAdapter);
#endif
if (adapter != null)
{
adapter.ItemsSource = null;
}
break;
case ActionBarNavigationMode.Tabs:
#if APPCOMPAT
actionBar.GetBindingMemberValue(AttachedMembersCompat.ActionBar.ItemsSourceGenerator)?.SetItemsSource(actionBar.GetBindingMemberValue(AttachedMembersCompat.ActionBar.ItemsSource));
#else
actionBar.GetBindingMemberValue(AttachedMembers.ActionBar.ItemsSourceGenerator)?.SetItemsSource(actionBar.GetBindingMemberValue(AttachedMembers.ActionBar.ItemsSource));
#endif
break;
}
}
private void TryRestoreSelectedIndex(Activity activity, ActionBar actionBar)
{
if (actionBar.GetNavigationMode() == ActionBarNavigationMode.Standard)
return;
bool result;
if (bool.TryParse(RestoreTabSelectedIndex, out result) && !result)
return;
var activityView = activity as IActivityView;
if (activityView == null)
return;
activityView.Mediator.SaveInstanceState += ActivityViewOnSaveInstanceState;
var bundle = activityView.Mediator.Bundle;
if (bundle != null)
{
var i = bundle.GetInt(SelectedTabIndexKey, int.MinValue);
if (i != int.MinValue && i != actionBar.SelectedNavigationIndex)
actionBar.SetSelectedNavigationItem(i);
}
}
