using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace HeuristicLab.OKB.ParameterTable {
  public partial class ParameterTable : UserControl {

    public ParameterTable() {
      InitializeComponent();
    }

    public void Initialize(IEnumerable<IParameterAccessor> parameters) {
      SuspendLayout();
      panel.Controls.Clear();
      panel.RowStyles.Clear();
      toolTip.RemoveAll();
      panel.RowCount = 0;
      foreach (var p in parameters) {
        try {
          Label l = new Label() {
            Text = p.Name,
            Dock = DockStyle.Fill,
            TextAlign = ContentAlignment.MiddleLeft,
          };
          Control c = CreateParameterControl(p);
          toolTip.SetToolTip(l, p.Description);
          toolTip.SetToolTip(c, p.TypeName);
          panel.Controls.Add(l);
          panel.Controls.Add(c);
          panel.SetCellPosition(l, new TableLayoutPanelCellPosition(0, panel.RowCount));
          panel.SetCellPosition(c, new TableLayoutPanelCellPosition(1, panel.RowCount));
          panel.RowCount++;
        } catch (Exception x) {
          MessageBox.Show(string.Format("could not display parameter {0}:\n{1}",
            p.Name, x.ToString()),
            "Error while creating parameter editor",
            MessageBoxButtons.OK, MessageBoxIcon.Error);
        }
      }
      Label filler = new Label() { Dock = DockStyle.Fill };
      panel.Controls.Add(filler);
      panel.SetCellPosition(filler, new TableLayoutPanelCellPosition(0, panel.RowCount));
      panel.RowStyles.Add(new RowStyle(SizeType.AutoSize));
      ResumeLayout();
    }

    private Control CreateParameterControl(IParameterAccessor parameter) {
      if (parameter is IPrimitiveParameter) {
        TextBox box = new TextBox() {
          Dock = DockStyle.Fill,
          Text = parameter.Value,
        };
        box.TextChanged += (s, a) => { UpdateParameter((IPrimitiveParameter)parameter, box); };
        return box;
      } else if (parameter is IOperatorParameter) {
        IOperatorParameter op = (IOperatorParameter)parameter;
        OperatorParameterSetterControl control = new OperatorParameterSetterControl() {
          Dock = DockStyle.Fill,
          Label = op.Value,
        };
        control.SetClicked += (s, a) => {
          op.Set();
          control.Label = op.Value;
        };
        control.ShowClicked += (s, a) => { op.Show(); };
        return control;
      } else throw new ArgumentException("unsupported parameter type");
    }

    private void UpdateParameter(IPrimitiveParameter parameter, TextBox box) {
      string value = box.Text;
      if (parameter.IsValid(value)) {
        parameter.Value = value;
        box.BackColor = Color.White;
      } else {
        box.BackColor = Color.LightPink;
      }
    }
  }
}