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using System;
using System.ComponentModel;
using System.Collections.Generic;
using ElmSharp;
using EColor = ElmSharp.Color;
namespace Xamarin.Forms.Platform.Tizen
{
public class PickerRenderer : ViewRenderer<Picker, Native.Button>
{
internal List _list;
internal Native.Dialog _dialog;
Dictionary<ListItem, int> _itemToItemNumber = new Dictionary<ListItem, int>();
protected override void Dispose(bool disposing)
{
if (disposing)
{
if (Control != null)
{
Control.Clicked -= OnClicked;
CleanView();
}
}
base.Dispose(disposing);
}
protected override void OnElementChanged(ElementChangedEventArgs<Picker> e)
{
if (Control == null)
{
SetNativeControl (new Native.Button(Forms.Context.MainWindow));
Control.Clicked += OnClicked;
}
UpdateSelectedIndex();
UpdateTextColor();
base.OnElementChanged(e);
}
protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
if (e.PropertyName == Picker.SelectedIndexProperty.PropertyName)
{
UpdateSelectedIndex();
}
else if (e.PropertyName == Picker.TextColorProperty.PropertyName)
{
UpdateTextColor();
}
}
void UpdateSelectedIndex()
{
Control.Text = (Element.SelectedIndex == -1 || Element.Items == null ?
"" : Element.Items[Element.SelectedIndex]);
}
void UpdateTextColor()
{
Control.TextColor = Element.TextColor.ToNative();
}
void OnClicked(object sender, EventArgs e)
{
int i = 0;
_dialog = new Native.Dialog(Forms.Context.MainWindow);
_list = new List(_dialog);
_dialog.AlignmentX = -1;
_dialog.AlignmentY = -1;
_dialog.Title = Element.Title;
_dialog.Dismissed += OnDialogDismissed;
_dialog.BackButtonPressed += (object senders, EventArgs es) =>
{
_dialog.Dismiss();
};
foreach (var s in Element.Items)
{
ListItem item = _list.Append(s);
_itemToItemNumber[item] = i;
i++;
}
_list.ItemSelected += OnItemSelected;
_dialog.Content = _list;
_dialog.Show();
_list.Show();
}
void OnItemSelected(object senderObject, EventArgs ev)
{
Element.SelectedIndex = _itemToItemNumber[(senderObject as List).SelectedItem];
_dialog.Dismiss();
}
void OnDialogDismissed(object sender, EventArgs e)
{
CleanView();
}
void CleanView()
{
if (null != _list)
{
_list.Unrealize();
_itemToItemNumber.Clear();
_list = null;
}
if (null != _dialog)
{
_dialog.Unrealize();
_dialog = null;
}
}
}
}
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