using System;
using Android.Content;
using Android.Runtime;
using Android.Widget;
using Android.Util;
using Android.Views;
using Android.Graphics.Drawables;

namespace Shared
{
    public class Loading : View
    {
        public bool CurStatus = false;

        public Loading ()
        {
            AndroidView = new MyLoading (Application.Activity);
            CurStatus = false;
        }
        /// <summary>
        /// Refresh this instance.
        /// </summary>
        public override void Refresh ()
        {
            base.Refresh ();
            Hide ();
        }
        /// <summary>
        /// Hide this instance.
        /// </summary>
        public void Hide ()
        {
            (AndroidView as MyLoading).textView.Text = "Loading......";
            AndroidView.Visibility = Android.Views.ViewStates.Gone;
            CurStatus = false;
        }

        /// <summary>
        /// Start this instance.
        /// </summary>
        public void Start ()
        {
            (AndroidView as MyLoading).textView.Text = "Loading......";
            AndroidView.BringToFront ();
            AndroidView.Visibility = ViewStates.Visible;
            CurStatus = true;
        }

        /// <summary>
        /// Start this instance.
        /// </summary>
        public void Start (string s)
        {
            (AndroidView as MyLoading).textView.Text = s;
            AndroidView.BringToFront ();
            AndroidView.Visibility = ViewStates.Visible;
        }

        public string Text {
            get {
                return (AndroidView as MyLoading).textView.Text;
            }
            set {
                (AndroidView as MyLoading).textView.Text = value;
            }
        }

        uint mTextColor;
        public uint TextColor
        {
            get
            {
                return mTextColor;
            }
            set
            {
                mTextColor = value;
                (AndroidView as MyLoading).textView.SetTextColor (HDLUtils.GetUIColorWithUint(mTextColor));
            }
        }

        public virtual uint LodingBackgroundColor {
            get {
                return (AndroidView as MyLoading).LodingBackgroundColor;
            }
            set {
                (AndroidView as MyLoading).LodingBackgroundColor = value;
            }
        }


        /// <summary>
        /// 文字大小
        /// </summary>
        /// <value>The size of the text.</value>
        public float TextSize
        {
            get
            {
                return (AndroidView as MyLoading).textView.TextSize;
            }
            set
            {
                (AndroidView as MyLoading).textView.SetTextSize(ComplexUnitType.Sp, value);
            }
        }

    }

    class MiddleLinearLayout : LinearLayout
    {
        public MiddleLinearLayout (Context context)
            : base (context)
        {
        }

        int mMaxWidth {
            get {
                var metric = new DisplayMetrics ();
                Application.Activity.WindowManager.DefaultDisplay.GetRealMetrics (metric);
                return metric.WidthPixels * 3 / 4;
            }
        }

        protected override void OnMeasure (int widthMeasureSpec, int heightMeasureSpec)
        {
            var widthMode = MeasureSpec.GetMode (widthMeasureSpec);
            var widthSize = MeasureSpec.GetSize (widthMeasureSpec);
            if (widthMode == MeasureSpecMode.Exactly) {
                widthSize = widthSize <= mMaxWidth ? widthSize

                        : (int)mMaxWidth;
            }

            if (widthMode == MeasureSpecMode.Unspecified) {
                widthSize = widthSize <= mMaxWidth ? widthSize

                        : (int)mMaxWidth;
            }
            if (widthMode == MeasureSpecMode.AtMost) {
                widthSize = widthSize <= mMaxWidth ? widthSize

                        : (int)mMaxWidth;
            }
            var maxWidthMeasureSpec = MeasureSpec.MakeMeasureSpec (widthSize,
                    widthMode);
            base.OnMeasure (maxWidthMeasureSpec, heightMeasureSpec);
        }
    }


    class MyLoading : Android.Widget.LinearLayout
    {
        ProgressBar Progress;
        public Android.Widget.TextView textView;
        LinearLayout tempLinearLayout;

        public MyLoading (Context context)
            : base (context)
        {
            //Progress = new ProgressBar(context);
            //SetBackgroundColor(Android.Graphics.Color.Argb(50, 0x32, 0x32, 0x32));
            //SetGravity(GravityFlags.Center);
            //tempLinearLayout = new LinearLayout(context) { Orientation = Orientation.Vertical };

            //tempLinearLayout.SetGravity(GravityFlags.CenterHorizontal);
            //tempLinearLayout.AddView(Progress, new Android.Views.ViewGroup.LayoutParams(Android.Views.ViewGroup.LayoutParams.WrapContent, Android.Views.ViewGroup.LayoutParams.WrapContent));
            //textView = new Android.Widget.TextView(context);
            //textView.Text = "Please wait....";
            //tempLinearLayout.AddView(textView, new Android.Views.ViewGroup.LayoutParams(Android.Views.ViewGroup.LayoutParams.WrapContent, Android.Views.ViewGroup.LayoutParams.WrapContent));
            //AddView(tempLinearLayout, new Android.Views.ViewGroup.LayoutParams(Android.Views.ViewGroup.LayoutParams.WrapContent, Android.Views.ViewGroup.LayoutParams.WrapContent));
            //tempLinearLayout.SetPadding(20, 20, 20, 20);
            Progress = new ProgressBar (context);
            SetBackgroundColor (Android.Graphics.Color.Argb (50, 0x32, 0x32, 0x32));
            SetGravity (GravityFlags.Center);
            tempLinearLayout = new MiddleLinearLayout (context) { Orientation = Orientation.Vertical };
            tempLinearLayout.SetGravity (GravityFlags.CenterHorizontal);
            //*******ProgressBar***********
            var mProgressLayoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WrapContent, LinearLayout.LayoutParams.WrapContent);
            //mProgressLayoutParams.SetMargins(0, 0, 0, 40);
            tempLinearLayout.AddView (Progress, mProgressLayoutParams);
            //*******TextView***********
            textView = new Android.Widget.TextView (context);
            textView.Text = "Loading......";
            var mTextViewParams = new LayoutParams(LinearLayout.LayoutParams.WrapContent, LinearLayout.LayoutParams.WrapContent);
            mTextViewParams.SetMargins(0, 20, 0, 0);
            tempLinearLayout.AddView(textView, mTextViewParams);
            //tempLinearLayout.AddView(textView, new Android.Views.ViewGroup.LayoutParams(Android.Views.ViewGroup.LayoutParams.WrapContent, Android.Views.ViewGroup.LayoutParams.WrapContent));

            AddView(tempLinearLayout, new Android.Views.ViewGroup.LayoutParams (Android.Views.ViewGroup.LayoutParams.WrapContent, Android.Views.ViewGroup.LayoutParams.WrapContent));
            tempLinearLayout.SetPadding (40, 40, 40, 40);
            tempLinearLayout.SetMinimumWidth(DensityUtil.Dip2Px(100));
        }

        uint loadingBackgroundColor;
        /// <summary>
        /// 背景颜色
        /// </summary>
        /// <value>The color of the background.</value>
        public virtual uint LodingBackgroundColor {
            get {
                return loadingBackgroundColor;
            }
            set {
                loadingBackgroundColor = value;

                if (this.GetType () != typeof (ImageView)) {
                    if (tempLinearLayout.Background == null || tempLinearLayout.Background.GetType () != typeof (GradientDrawable)) {
                        tempLinearLayout.Background = new Android.Graphics.Drawables.GradientDrawable ();
                    }

                    var gradientDrawable = (GradientDrawable)tempLinearLayout.Background;
                    gradientDrawable.SetCornerRadius (DensityUtil.Dip2Px (6));
                    byte r, g, b, a;

                    r = (byte)(loadingBackgroundColor / 256 / 256 % 256);
                    g = (byte)(loadingBackgroundColor / 256 % 256);
                    b = (byte)(loadingBackgroundColor % 256);
                    a = (byte)(loadingBackgroundColor / 256 / 256 / 256 % 256);
                    gradientDrawable.SetColor (Android.Graphics.Color.Argb (a, r, g, b).ToArgb ());
                }
            }
        }

        /// <summary>
        /// 点击事件
        /// </summary>
        /// <returns>The touch event.</returns>
        /// <param name="e">E.</param>
        public override bool OnTouchEvent (Android.Views.MotionEvent e)
        {
            //事件自己处理
            return true;
        }
    }
}