using System;
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;

namespace Tango.Visuals
{
    /// <summary>
    /// Interaction logic for TicksAxis.xaml
    /// </summary>
    public partial class YAxisTicks : UserControl
    {
        #region Constructors

        /// <summary>
        /// Initializes a new instance of the <see cref="YAxisTicks"/> class.
        /// </summary>
        public YAxisTicks()
        {
            InitializeComponent();
            this.FocusVisualStyle = null;
            this.Focusable = false;
            this.Loaded += TicksAxis_Loaded;
        }

        #endregion

        #region Event Handlers

        /// <summary>
        /// Handles the Loaded event of the TicksAxis control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="RoutedEventArgs"/> instance containing the event data.</param>
        private void TicksAxis_Loaded(object sender, RoutedEventArgs e)
        {
            DrawTicks();
        }

        #endregion

        #region Properties

        /// <summary>
        /// Gets or sets the ticks.
        /// </summary>
        public int Ticks
        {
            get { return (int)GetValue(TicksProperty); }
            set { SetValue(TicksProperty, value); }
        }
        public static readonly DependencyProperty TicksProperty =
            DependencyProperty.Register("Ticks", typeof(int), typeof(YAxisTicks), new PropertyMetadata(11, (d, e) => (d as YAxisTicks).DrawTicks()));

        /// <summary>
        /// Gets or sets the tick template.
        /// </summary>
        public DataTemplate TickTemplate
        {
            get { return (DataTemplate)GetValue(TickTemplateProperty); }
            set { SetValue(TickTemplateProperty, value); }
        }
        public static readonly DependencyProperty TickTemplateProperty =
            DependencyProperty.Register("TickTemplate", typeof(DataTemplate), typeof(YAxisTicks), new PropertyMetadata(null, (d, e) => (d as YAxisTicks).DrawTicks()));

        /// <summary>
        /// Gets or sets the big tick interval.
        /// </summary>
        public int? BigTickInterval
        {
            get { return (int?)GetValue(BigTickIntervalProperty); }
            set { SetValue(BigTickIntervalProperty, value); }
        }
        public static readonly DependencyProperty BigTickIntervalProperty =
            DependencyProperty.Register("BigTickInterval", typeof(int?), typeof(YAxisTicks), new PropertyMetadata(null, (d, e) => (d as YAxisTicks).DrawTicks()));

        /// <summary>
        /// Gets or sets the big tick template.
        /// </summary>
        public DataTemplate BigTickTemplate
        {
            get { return (DataTemplate)GetValue(BigTickTemplateProperty); }
            set { SetValue(BigTickTemplateProperty, value); }
        }
        public static readonly DependencyProperty BigTickTemplateProperty =
            DependencyProperty.Register("BigTickTemplate", typeof(DataTemplate), typeof(YAxisTicks), new PropertyMetadata(null));

        #endregion

        #region Methods

        /// <summary>
        /// Draws the ticks.
        /// </summary>
        private void DrawTicks()
        {
            grid.Children.Clear();
            grid.RowDefinitions.Clear();

            for (int i = 0; i < Ticks; i++)
            {
                if (i == Ticks - 1)
                {
                    ContentControl tick = null;

                    if (BigTickInterval != null && BigTickTemplate != null)
                    {
                        tick = AddBigTick(i, i);
                    }
                    else
                    {
                        tick = AddTick(i, i);
                    }
                    tick.VerticalAlignment = System.Windows.VerticalAlignment.Bottom;
                    grid.Children.Add(tick);
                }
                else
                {
                    ContentControl tick = null;

                    RowDefinition row = new RowDefinition();
                    row.Height = new GridLength(1, GridUnitType.Star);
                    grid.RowDefinitions.Add(row);


                    if (BigTickInterval != null && (double)i % (double)BigTickInterval == 0 && BigTickTemplate != null)
                    {
                        tick = AddBigTick(i, i);
                    }
                    else
                    {
                        tick = AddTick(i, i);
                    }

                    grid.Children.Add(tick);
                }
            }
        }

        /// <summary>
        /// Adds the tick.
        /// </summary>
        /// <param name="value">The value.</param>
        /// <param name="index">The index.</param>
        /// <returns></returns>
        private ContentControl AddTick(double value, int index)
        {
            ContentControl tick = new ContentControl();
            tick.Focusable = false;
            tick.VerticalAlignment = System.Windows.VerticalAlignment.Top;
            tick.HorizontalAlignment = System.Windows.HorizontalAlignment.Stretch;
            Grid.SetRow(tick, index);

            if (TickTemplate != null)
            {
                tick.ContentTemplate = TickTemplate;
            }

            return tick;
        }

        /// <summary>
        /// Adds big tick.
        /// </summary>
        /// <param name="value">The value.</param>
        /// <param name="index">The index.</param>
        /// <returns></returns>
        private ContentControl AddBigTick(double value, int index)
        {
            ContentControl tick = new ContentControl();
            tick.Focusable = false;
            tick.VerticalAlignment = System.Windows.VerticalAlignment.Top;
            tick.HorizontalAlignment = System.Windows.HorizontalAlignment.Stretch;
            Grid.SetRow(tick, index);

            if (BigTickTemplate != null)
            {
                tick.ContentTemplate = BigTickTemplate;
            }

            return tick;
        }

        #endregion

    }
}