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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Serialization;
using Tango.BL.Entities;
using Tango.Core.Commands;
using Tango.MachineStudio.Technician.Editors;
using Tango.MachineStudio.Technician.Helpers;
using Tango.SharedUI.Helpers;

namespace Tango.MachineStudio.Technician.TechItems
{
    /// <summary>
    /// Represents a multi channel real-time graph item.
    /// </summary>
    /// <seealso cref="Tango.MachineStudio.Technician.TechItems.TechItem" />
    [TechItem(5)]
    public class MultiGraphItem : TechItem
    {
        private TechMonitor _techMonitor;
        /// <summary>
        /// Gets or sets the db tech monitor.
        /// </summary>
        [XmlIgnore]
        public TechMonitor TechMonitor
        {
            get { return _techMonitor; }
            set
            {
                TechMonitor old = _techMonitor;

                _techMonitor = value;
                RaisePropertyChangedAuto();

                if (_techMonitor != old && Editor != null)
                {
                    Editor.InnerGraph.InnerGraph.MaxPoints = GraphsHelper.GetMaxPoints(TechMonitor.PointsPerFrame);
                    Editor.InnerGraph.InvalidateGraph();
                }

                ItemGuid = value != null ? value.Guid : null;

                TechName = _techMonitor != null ? _techMonitor.Description : null;
            }
        }

        /// <summary>
        /// Gets or sets the item editor.
        /// </summary>
        [XmlIgnore]
        public MultiGraphElementEditor Editor { get; set; }

        private double _min;
        /// <summary>
        /// Gets or sets the minimum graph value.
        /// </summary>
        public double Min
        {
            get { return _min; }
            set { _min = value; RaisePropertyChangedAuto(); }
        }

        private double _max;
        /// <summary>
        /// Gets or sets the maximum graph value.
        /// </summary>
        public double Max
        {
            get { return _max; }
            set { _max = value; RaisePropertyChangedAuto(); }
        }

        private bool _useMinMax;
        /// <summary>
        /// Gets or sets a value indicating whether [use minimum maximum].
        /// </summary>
        public bool UseMinMax
        {
            get { return _useMinMax; }
            set { _useMinMax = value; RaisePropertyChangedAuto(); }
        }

        private bool _useAutoRange;
        /// <summary>
        /// Gets or sets a value indicating whether [use automatic range].
        /// </summary>
        public bool UseAutoRange
        {
            get { return _useAutoRange; }
            set { _useAutoRange = value; RaisePropertyChangedAuto(); }
        }

        private bool _isPaused;
        /// <summary>
        /// Gets or sets a value indicating whether this instance is paused.
        /// </summary>
        [XmlIgnore]
        public bool IsPaused
        {
            get { return _isPaused; }
            set
            {
                _isPaused = value; RaisePropertyChangedAuto();

                if (Editor != null)
                {
                    Editor.InnerGraph.Controller.IsPaused = _isPaused;
                }
            }
        }

        [XmlIgnore]
        public RelayCommand ClearCommand { get; set; }

        /// <summary>
        /// Initializes a new instance of the <see cref="MultiGraphItem"/> class.
        /// </summary>
        public MultiGraphItem() : base()
        {
            Max = 100;
            Name = "Multi Channel Graph";
            Description = "Multi channel real-time graph";
            Image = ResourceHelper.GetImageFromResources("Images/multi-graph.png");

            ClearCommand = new RelayCommand(() => 
            {
                if (Editor != null)
                {
                    Editor.InnerGraph.Controller.Clear();
                }
            });
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="MultiGraphItem"/> class.
        /// </summary>
        /// <param name="techMonitor">The db tech monitor.</param>
        public MultiGraphItem(TechMonitor techMonitor) : this()
        {
            TechMonitor = techMonitor;
        }

        /// <summary>
        /// Clones this instance.
        /// </summary>
        /// <returns></returns>
        public override TechItem Clone()
        {
            MultiGraphItem cloned = base.Clone() as MultiGraphItem;
            cloned.TechMonitor = TechMonitor;
            cloned.Min = Min;
            cloned.Max = Max;
            cloned.UseMinMax = UseMinMax;
            cloned.UseAutoRange = UseAutoRange;
            return cloned;
        }
    }
}