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 OnBackPressing(Activity sender, CancelEventArgs args)
{
var value = _actionBar.GetBindingMemberValue(AttachedMembersCompat.ActionBar.ContextActionBarVisible);
if (value)
{
args.Cancel = true;
}
_actionBar.SetBindingMemberValue(AttachedMembersCompat.ActionBar.ContextActionBarVisible, false);
}
protected override void Refresh()
{
var manager = GetCollectionViewManager();
for (int i = 0; i < _actionBar.TabCount; i++)
{
ActionBarTabTemplate.ClearTab(_actionBar, _actionBar.GetTabAt(i), true);
}
if (manager == null)
{
_actionBar.RemoveAllTabs();
}
else
{
manager.Clear(_actionBar);
}
IEnumerable itemsSource = ItemsSource;
if (itemsSource == null)
{
return;
}
#if APPCOMPAT
var selectedItem = _actionBar.GetBindingMemberValue(AttachedMembersCompat.ActionBar.SelectedItem);
#else
var selectedItem = _actionBar.GetBindingMemberValue(AttachedMembers.ActionBar.SelectedItem);
#endif
int count = itemsSource.Count();
for (int index = 0; index < count; index++)
{
var item = GetItem(index);
var tab = CreateTab(item);
if (manager == null)
{
_actionBar.AddTab(tab, index, ReferenceEquals(selectedItem, item));
}
else
{
manager.Insert(_actionBar, index, tab);
}
}
if (count == 0)
{
OnEmptyTab();
}
}
public bool OnNavigationItemSelected(int itemPosition, long itemId)
{
#if APPCOMPAT
var adapter = _actionBar?.GetBindingMemberValue(AttachedMembersCompat.ActionBar.ItemsSourceAdapter);
#else
var adapter = _actionBar?.GetBindingMemberValue(AttachedMembers.ActionBar.ItemsSourceAdapter);
#endif
if (adapter == null)
{
return(false);
}
#if APPCOMPAT
_actionBar.SetBindingMemberValue(AttachedMembersCompat.ActionBar.SelectedItem, adapter.GetRawItem(itemPosition));
#else
_actionBar.SetBindingMemberValue(AttachedMembers.ActionBar.SelectedItem, adapter.GetRawItem(itemPosition));
#endif
return(true);
}
public bool OnCreateActionMode(ActionMode mode, IMenu menu)
{
#if APPCOMPAT
var templateId = _actionBar?.GetBindingMemberValue(AttachedMembersCompat.ActionBar.ContextActionBarTemplate);
#else
var templateId = _actionBar?.GetBindingMemberValue(AttachedMembers.ActionBar.ContextActionBarTemplate);
#endif
if (templateId == null)
{
return(false);
}
var activity = _actionBar.ThemedContext.GetActivity();
if (activity == null)
{
Tracer.Warn("The activity is null action bar {0}", _actionBar);
return(false);
}
activity.MenuInflater.Inflate(templateId.Value, menu, _actionBar);
return(true);
}
private void SetContent(ActionBar.Tab tab, FragmentTransaction ft, int? placeHolder, Activity activity, ActionBar bar)
{
if (placeHolder == null)
{
Tracer.Error("The placeholder for tab {0} was not found.", tab);
return;
}
var layout = activity.FindViewById<ViewGroup>(placeHolder.Value);
if (layout == null)
{
Tracer.Warn("The ActionBarTabContentId with id = {0} is not found in activity {1}",
placeHolder.Value,
activity);
return;
}
if (_content == null)
{
#if APPCOMPAT
_content = tab.GetBindingMemberValue(AttachedMembersCompat.ActionBarTab.Content);
#else
_content = tab.GetBindingMemberValue(AttachedMembers.ActionBarTab.Content);
#endif
var viewModel = _content as IViewModel;
if (viewModel == null)
{
var fragmentClass = _content as string;
//If content is a string, trying to create a fragment.
if (!string.IsNullOrEmpty(fragmentClass))
{
var type = TypeCache<Fragment>.Instance.GetTypeByName(fragmentClass, true, false);
if (type != null)
{
var fragment = Fragment.Instantiate(bar.ThemedContext, Java.Lang.Class.FromType(type).Name);
_content = fragment;
}
}
else if (_content is int)
_content = activity.GetBindableLayoutInflater().Inflate((int)_content, null);
}
else
viewModel.Settings.Metadata.AddOrUpdate(ViewModelConstants.StateNotNeeded, true);
_content = PlatformExtensions.GetContentView(layout, layout.Context, _content,
_contentTemplateProvider.GetTemplateId(), _contentTemplateProvider.GetDataTemplateSelector());
layout.SetContentView(_content, ft, (@group, fragment, arg3) =>
{
if (fragment.IsDetached)
arg3.Attach(fragment);
else
arg3.Replace(@group.Id, fragment);
});
}
else
layout.SetContentView(_content, ft, (@group, fragment, arg3) => arg3.Attach(fragment));
}
public void OnTabSelected(ActionBar.Tab tab, FragmentTransaction ft)
{
if (_cleared)
return;
var bar = (ActionBar)tab.GetBindingMemberValue(AttachedMembers.Object.Parent);
var placeHolder = ActionBarView.GetTabContentId(bar);
var activity = bar.ThemedContext.GetActivity();
SetContent(tab, ft, placeHolder, activity, bar);
//Set selected item data context or tab
var selectedItem = bar.GetBindingMemberValue(ItemsSourceGeneratorBase.MemberDescriptor) == null ? tab : tab.GetDataContext();
#if APPCOMPAT
bar.SetBindingMemberValue(AttachedMembersCompat.ActionBar.SelectedItem, selectedItem);
#else
bar.SetBindingMemberValue(AttachedMembers.ActionBar.SelectedItem, selectedItem);
#endif
}
