public EventViewModel(Page page, Event e, string gId, string gName) : base(page)
{
members = new ObservableCollection<MemberViewModel>();
eventId = e.Id;
EventName = e.Name;
EventDate = e.Time;
groupId = gId;
GroupName = gName;
}
public EventView(Event e, string gId, string gName)
{
InitializeComponent();
BindingContext = viewModel = new EventViewModel(this, e, gId, gName);
ToolbarItems.Add(new ToolbarItem
{
StyleId="AddNewMember",
Text = "Add New Member",
Order = ToolbarItemOrder.Primary,
Icon = "ic_action_social_person_add.png",
Command = viewModel.AddNewUserCommand
});
ToolbarItems.Add(new ToolbarItem
{
StyleId="PickWinner",
Text = "Pick Winner",
Icon = "ic_action_winner.png",
Order = ToolbarItemOrder.Primary,
Command = viewModel.SelectWinnerCommand
});
MembersList.ItemSelected += (sender, ee) =>
{
if (MembersList.SelectedItem == null)
return;
viewModel.CheckInCommand.Execute(ee.SelectedItem);
MembersList.SelectedItem = null;
};
MembersList.ItemAppearing += (sender, ee) =>
{
if(viewModel.IsBusy || viewModel.Members.Count == 0)
return;
//hit bottom!
if(((MemberViewModel)ee.Item).Name == viewModel.Members[viewModel.Members.Count - 1].Member.Name)
{
viewModel.LoadMoreCommand.Execute(null);
}
};
//ensure after first load that we scroll to the top.
/*viewModel.FinishedFirstLoad = (index) =>
{
if(viewModel.Members.Count == 0)
return;
Device.StartTimer(TimeSpan.FromMilliseconds(100), ()=>
{
Device.BeginInvokeOnMainThread(() =>
MembersList.ScrollTo(viewModel.Members[index], ScrollToPosition.MakeVisible, false));
return false;
});
};*/
}
private void ExecuteGoToEventCommand(Event e)
{
ShowViewModel<EventViewModel>(new { eId = e.Id, eName = e.Name, gId = groupId, gName = GroupName, eDate = e.Time});
}
private void ExecuteGoToEventCommand(Event e)
{
ShowViewModel<EventViewModel>(new { eventId = e.Id, eventName = e.Name});
}
void ExecuteGoToEventCommand(Event e)
{
if (IsBusy)
return;
page.Navigation.PushAsync(new EventView(e, GroupId, GroupName));
}