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using System.Collections.ObjectModel;
using System.Windows.Input;
using System.Linq;
using Xamarin.Forms.Internals;
namespace Xamarin.Forms.Controls
{
internal class MessagesViewModel : ViewModelBase
{
public MessagesViewModel()
{
Messages = new ObservableCollection<MessageViewModel> (Enumerable.Range (0, 100).Select (i => {
return new MessageViewModel { Subject = "Subject Line " + i, MessagePreview = "Lorem ipsum dolorem monkeys bonkers " + i };
}));
MessagingCenter.Subscribe<MessageViewModel, MessageViewModel> (this, "DeleteMessage", (vm, vm2) => {
Messages.Remove (vm);
});
}
public ObservableCollection<MessageViewModel> Messages
{
get;
private set;
}
}
[Preserve (AllMembers = true)]
internal class MessageViewModel : ViewModelBase
{
public MessageViewModel()
{
Delete = new Command (() => MessagingCenter.Send (this, "DeleteMessage", this));
Move = new Command (() => MessagingCenter.Send (this, "MoveMessage", this));
}
public string Subject
{
get;
set;
}
public string MessagePreview
{
get;
set;
}
public ICommand Delete
{
get;
private set;
}
public ICommand Move
{
get;
private set;
}
}
internal class ContextActionsGallery : ContentPage
{
class MessageCell : TextCell
{
public MessageCell()
{
this.SetBinding (TextProperty, "Subject");
this.SetBinding (DetailProperty, "MessagePreview");
var delete = new MenuItem { Text = "Delete", IsDestructive = true };
delete.SetBinding (MenuItem.CommandProperty, "Delete");
var mark = new MenuItem { Text = "Mark", Icon = "calculator.png" };
var move = new MenuItem { Text = "Move" };
//move.Clicked += async (sender, e) => await Navigation.PopAsync();
ContextActions.Add (mark);
ContextActions.Add (delete);
ContextActions.Add (move);
var clear = new MenuItem { Text = "Clear Items" };
clear.Clicked += (sender, args) => ContextActions.Clear();
ContextActions.Add (clear);
}
}
public ContextActionsGallery (bool tableView = false)
{
BindingContext = new MessagesViewModel();
View list;
if (!tableView) {
list = new ListView();
list.SetBinding (ListView.ItemsSourceProperty, "Messages");
((ListView)list).ItemTemplate = new DataTemplate (typeof (MessageCell));
} else {
var section = new TableSection();
section.Add (new TextCell { Text = "I have no ContextActions", Detail = "Sup" });
foreach (var msg in ((MessagesViewModel) BindingContext).Messages) {
section.Add (new MessageCell { BindingContext = msg });
}
list = new TableView();
((TableView)list).Root = new TableRoot { section };
}
Content = new StackLayout {
Children = {
new Label { Text = "Email" },
list
}
};
}
}
}
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