using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;
using DeltaShell.Gui.Properties;

namespace DeltaShell.Gui.Forms
{
    public partial class SelectViewDialog : Form
    {
        private IList<string> items;
        private string dataName;

        public SelectViewDialog()
        {
            InitializeComponent();

            Font lbFont = listBox.Font;
            var defaultItemFont = new Font(lbFont.FontFamily, lbFont.Size, FontStyle.Bold);
            var g = listBox.CreateGraphics();
            var itemSize = g.MeasureString("TEST", defaultItemFont);

            listBox.ItemHeight = (int) itemSize.Height;
        }

        public IList<string> Items
        {
            get { return items; }
            set
            {
                items = value;
                listBox.DataSource = items;
                listBox.SelectedIndex = 0;
            }
        }

        public string SelectedItem
        {
            get { return (string) listBox.SelectedItem;  }
            set { listBox.SelectedItem = value;  }
        }

        private void listBox_DoubleClick(object sender, EventArgs e)
        {
            DialogResult = DialogResult.OK;
            Close();
        }

        public string DefaultViewName { get; set; }

        private void listBox_DrawItem(object sender, DrawItemEventArgs e)
        {
            string itemAsString = listBox.Items[e.Index].ToString();
            Font lbFont = listBox.Font;

            bool selected = (e.State & DrawItemState.Selected) == DrawItemState.Selected;
            e.DrawBackground();

            if (itemAsString == DefaultViewName)
            {
                string defaultIndicatorText = Resources.SelectViewDialog_listBox_DrawItem_____Default_;
                var defaultItemFont = new Font(lbFont.FontFamily, lbFont.Size, FontStyle.Bold);
                
                var itemSize = e.Graphics.MeasureString(itemAsString, defaultItemFont);
                var indicatorSize = e.Graphics.MeasureString(defaultIndicatorText, defaultItemFont);

                var boundsIndicator = new RectangleF(e.Bounds.Left + itemSize.Width,
                                                     e.Bounds.Top, indicatorSize.Width,e.Bounds.Height);

                e.Graphics.DrawString(itemAsString, defaultItemFont, (selected) ? new SolidBrush(SystemColors.HighlightText) : Brushes.Black, e.Bounds);
                e.Graphics.DrawString(defaultIndicatorText, defaultItemFont, Brushes.LightGray, boundsIndicator);
            }
            else
            {
                e.Graphics.DrawString(itemAsString, lbFont, (selected) ? new SolidBrush(SystemColors.HighlightText): Brushes.Black, e.Bounds);
            }

            e.DrawFocusRectangle();
        }

        private void listBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            checkBoxDefault.Checked = (listBox.SelectedItem != null &&
                                       listBox.SelectedItem.ToString() == DefaultViewName);
        }

        private void checkBoxDefault_CheckedChanged(object sender, EventArgs e)
        {
            string previousName = DefaultViewName;
            if (listBox.SelectedItem.ToString() == DefaultViewName)
            {
                DefaultViewName = (checkBoxDefault.Checked)
                                      ? listBox.SelectedItem.ToString()
                                      : null;
            }
            else
            {
                if (checkBoxDefault.Checked)
                {
                    DefaultViewName = listBox.SelectedItem.ToString();
                }
            }
            if (previousName != DefaultViewName)
            {
                listBox.Refresh();
            }
        }
    }
}