using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Tango.Core.EventArguments;

namespace Tango.Touch.Controls
{
    public class TouchComboBox : Control
    {
        static TouchComboBox()
        {
            DefaultStyleKeyProperty.OverrideMetadata(typeof(TouchComboBox), new FrameworkPropertyMetadata(typeof(TouchComboBox)));
        }

        public String Watermark
        {
            get { return (String)GetValue(WatermarkProperty); }
            set { SetValue(WatermarkProperty, value); }
        }
        public static readonly DependencyProperty WatermarkProperty =
            DependencyProperty.Register("Watermark", typeof(String), typeof(TouchComboBox), new PropertyMetadata(null));

        public object SelectedItem
        {
            get { return (object)GetValue(SelectedItemProperty); }
            set { SetValue(SelectedItemProperty, value); }
        }
        public static readonly DependencyProperty SelectedItemProperty =
            DependencyProperty.Register("SelectedItem", typeof(object), typeof(TouchComboBox), new FrameworkPropertyMetadata(null, FrameworkPropertyMetadataOptions.BindsTwoWayByDefault));

        public IList ItemsSource
        {
            get { return (IList)GetValue(ItemsSourceProperty); }
            set { SetValue(ItemsSourceProperty, value); }
        }
        public static readonly DependencyProperty ItemsSourceProperty =
            DependencyProperty.Register("ItemsSource", typeof(IList), typeof(TouchComboBox), new PropertyMetadata(null));

        public DataTemplate ItemTemplate
        {
            get { return (DataTemplate)GetValue(ItemTemplateProperty); }
            set { SetValue(ItemTemplateProperty, value); }
        }
        public static readonly DependencyProperty ItemTemplateProperty =
            DependencyProperty.Register("ItemTemplate", typeof(DataTemplate), typeof(TouchComboBox), new PropertyMetadata(null));

        public DataTemplate SelectedItemTemplate
        {
            get { return (DataTemplate)GetValue(SelectedItemTemplateProperty); }
            set { SetValue(SelectedItemTemplateProperty, value); }
        }
        public static readonly DependencyProperty SelectedItemTemplateProperty =
            DependencyProperty.Register("SelectedItemTemplate", typeof(DataTemplate), typeof(TouchComboBox), new PropertyMetadata(null));

        public String Title
        {
            get { return (String)GetValue(TitleProperty); }
            set { SetValue(TitleProperty, value); }
        }
        public static readonly DependencyProperty TitleProperty =
            DependencyProperty.Register("Title", typeof(String), typeof(TouchComboBox), new PropertyMetadata(null));

        public double MinPopupWidth
        {
            get { return (double)GetValue(MinPopupWidthProperty); }
            set { SetValue(MinPopupWidthProperty, value); }
        }
        public static readonly DependencyProperty MinPopupWidthProperty =
            DependencyProperty.Register("MinPopupWidth", typeof(double), typeof(TouchComboBox), new PropertyMetadata(300.0));

        public double MinPopupHeight
        {
            get { return (double)GetValue(MinPopupHeightProperty); }
            set { SetValue(MinPopupHeightProperty, value); }
        }
        public static readonly DependencyProperty MinPopupHeightProperty =
            DependencyProperty.Register("MinPopupHeight", typeof(double), typeof(TouchComboBox), new PropertyMetadata(200.0));

        public String DisplayMemberPath
        {
            get { return (String)GetValue(DisplayMemberPathProperty); }
            set { SetValue(DisplayMemberPathProperty, value); }
        }
        public static readonly DependencyProperty DisplayMemberPathProperty =
            DependencyProperty.Register("DisplayMemberPath", typeof(String), typeof(TouchComboBox), new PropertyMetadata(null));

        public String ValuePath
        {
            get { return (String)GetValue(ValuePathProperty); }
            set { SetValue(ValuePathProperty, value); }
        }
        public static readonly DependencyProperty ValuePathProperty =
            DependencyProperty.Register("ValuePath", typeof(String), typeof(TouchComboBox), new PropertyMetadata(null));



        public TouchComboBox()
        {
            this.RegisterForPreviewMouseOrTouchDown(OnMouseDown);
            this.RegisterForPreviewMouseOrTouchUp(OnMouseUp);
        }

        private void OnMouseUp(object sender, MouseOrTouchEventArgs e)
        {
            ShowSelectionOnTouchPanel();
        }

        private void OnMouseDown(object sender, MouseOrTouchEventArgs e)
        {
            System.Windows.Input.Keyboard.Focus(this);
        }

        private void ShowSelectionOnTouchPanel()
        {
            TouchPanel touchPanel = this.FindAncestor<TouchPanel>();

            if (touchPanel != null)
            {
                touchPanel.CurrentComboBox = this;
            }
        }

        internal void SetResultFromTouchPanel(Object selectedObject)
        {
            SelectedItem = selectedObject;
        }
    }
}