#region License Information
/* HeuristicLab
 * Copyright (C) Heuristic and Evolutionary Algorithms Laboratory (HEAL)
 *
 * This file is part of HeuristicLab.
 *
 * HeuristicLab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * HeuristicLab is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
 */
#endregion

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Windows.Forms;
using HEAL.Attic;
using HeuristicLab.Core;
using HeuristicLab.Core.Views;
using HeuristicLab.MainForm;
using HeuristicLab.Optimization;
using HeuristicLab.PluginInfrastructure;

namespace HeuristicLab.Problems.DataAnalysis.Views {

  [View("DataAnalysisSolution View")]
  [Content(typeof(DataAnalysisSolution), false)]
  public partial class DataAnalysisSolutionView : NamedItemCollectionView<IResult> {
    public DataAnalysisSolutionView() {
      InitializeComponent();
      viewHost.ViewsLabelVisible = false;
    }

    public new DataAnalysisSolution Content {
      get { return (DataAnalysisSolution)base.Content; }
      set { base.Content = value; }
    }

    protected override void SetEnabledStateOfControls() {
      base.SetEnabledStateOfControls();
      addButton.Enabled = false;
      removeButton.Enabled = false;
      loadProblemDataButton.Enabled = Content != null && !Locked;
    }

    protected override void RegisterContentEvents() {
      base.RegisterContentEvents();
      Content.ProblemDataChanged += new EventHandler(Content_ProblemDataChanged);
    }
    protected override void DeregisterContentEvents() {
      base.DeregisterContentEvents();
      Content.ProblemDataChanged -= new EventHandler(Content_ProblemDataChanged);
    }
    private void Content_ProblemDataChanged(object sender, EventArgs e) {
      OnContentChanged();
    }

    protected override void OnContentChanged() {
      string selectedName = null;
      if ((itemsListView.SelectedItems.Count == 1) && (itemsListView.SelectedItems[0].Tag != null && itemsListView.SelectedItems[0].Tag is Type))
        selectedName = itemsListView.SelectedItems[0].Text;

      base.OnContentChanged();
      AddEvaluationViewTypes();

      // recover selection
      if (selectedName != null) {
        foreach (ListViewItem item in itemsListView.Items) {
          if (item.Tag != null && item.Tag is Type && item.Text == selectedName)
            item.Selected = true;
        }
      }
    }

    protected override IResult CreateItem() {
      return null;
    }

    protected virtual void AddEvaluationViewTypes() {
      if (Content != null && !Content.ProblemData.IsEmpty) {
        var viewTypes = MainFormManager.GetViewTypes(Content.GetType(), true)
          .Where(t => typeof(IDataAnalysisSolutionEvaluationView).IsAssignableFrom(t));
        foreach (var viewType in viewTypes)
          AddViewListViewItem(viewType, ((IDataAnalysisSolutionEvaluationView)Activator.CreateInstance(viewType)).ViewImage);
      }
    }

    protected sealed override void itemsListView_DoubleClick(object sender, EventArgs e) {
      if (itemsListView.SelectedItems.Count != 1) return;

      IResult result = itemsListView.SelectedItems[0].Tag as IResult;
      Type viewType = itemsListView.SelectedItems[0].Tag as Type;
      if (result != null) {
        IContentView view = MainFormManager.MainForm.ShowContent(result.Value);
        if (view != null) {
          view.Caption = result.Name;
          view.ReadOnly = ReadOnly;
          view.Locked = Locked;
        }
      } else if (viewType != null) {
        MainFormManager.MainForm.ShowContent(Content, viewType);
      }
    }

    protected override void itemsListView_SelectedIndexChanged(object sender, EventArgs e) {
      if (itemsListView.SelectedItems.Count == 1 && itemsListView.SelectedItems[0].Tag is Type) {
        detailsGroupBox.Enabled = true;
        Type viewType = (Type)itemsListView.SelectedItems[0].Tag;
        viewHost.ViewType = viewType;
        viewHost.Content = Content;
      } else
        base.itemsListView_SelectedIndexChanged(sender, e);
    }

    protected virtual void loadProblemDataButton_Click(object sender, EventArgs e) {
      if (loadProblemDataFileDialog.ShowDialog(this) != DialogResult.OK) return;
      try {
        var ser = new ProtoBufSerializer();
        object hlFile = ser.Deserialize(loadProblemDataFileDialog.FileName);

        IDataAnalysisProblemData problemData = null;
        if (hlFile is IDataAnalysisProblemData) {
          problemData = (IDataAnalysisProblemData)hlFile;
        } else if (hlFile is IDataAnalysisProblem) {
          problemData = ((IDataAnalysisProblem)hlFile).ProblemData;
        } else if (hlFile is IDataAnalysisSolution) {
          problemData = ((IDataAnalysisSolution)hlFile).ProblemData;
        }

        if (problemData == null)
          throw new InvalidOperationException("The chosen HeuristicLab file does not contain a ProblemData, Problem, or DataAnalysisSolution.");

        var solution = (IDataAnalysisSolution)Content.Clone();
        solution.ProblemData = problemData;
        if (!solution.Name.EndsWith(" with loaded problemData"))
          solution.Name += " with loaded problemData";
        MainFormManager.MainForm.ShowContent(solution);
      } catch (InvalidOperationException invalidOperationException) {
        ErrorHandling.ShowErrorDialog(this, invalidOperationException);
      } catch (ArgumentException argumentException) {
        ErrorHandling.ShowErrorDialog(this, argumentException);
      }
    }

    protected void AddViewListViewItem(Type viewType, Image image) {
      ListViewItem listViewItem = new ListViewItem();
      listViewItem.Text = ViewAttribute.GetViewName(viewType);
      itemsListView.SmallImageList.Images.Add(image);
      listViewItem.ImageIndex = itemsListView.SmallImageList.Images.Count - 1;
      listViewItem.Tag = viewType;
      itemsListView.Items.Add(listViewItem);

      AdjustListViewColumnSizes();
    }

    protected void RemoveViewListViewItem(Type viewType) {
      List<ListViewItem> itemsToRemove = itemsListView.Items.Cast<ListViewItem>().Where(item => item.Tag as Type == viewType).ToList();

      foreach (ListViewItem item in itemsToRemove)
        itemsListView.Items.Remove(item);
    }

    protected override void showDetailsCheckBox_CheckedChanged(object sender, EventArgs e) {
      if (showDetailsCheckBox.Checked && itemsListView.SelectedItems.Count == 1 && itemsListView.SelectedItems[0].Tag is Type) {
        Type viewType = (Type)itemsListView.SelectedItems[0].Tag;
        viewHost.ViewType = viewType;
        viewHost.Content = Content;
        splitContainer.Panel2Collapsed = false;
        detailsGroupBox.Enabled = true;
      } else base.showDetailsCheckBox_CheckedChanged(sender, e);
    }

    protected override void RebuildImageList() {
      itemsListView.SmallImageList.Images.Clear();
      foreach (ListViewItem listViewItem in itemsListView.Items) {
        IResult result = listViewItem.Tag as IResult;
        Type viewType = listViewItem.Tag as Type;
        if (result != null) itemsListView.SmallImageList.Images.Add(result.ItemImage);
        else if (viewType != null && typeof(IDataAnalysisSolutionEvaluationView).IsAssignableFrom(viewType))
          itemsListView.SmallImageList.Images.Add(((IDataAnalysisSolutionEvaluationView)Activator.CreateInstance(viewType)).ViewImage);
        else itemsListView.SmallImageList.Images.Add(HeuristicLab.Common.Resources.VSImageLibrary.Nothing);

        listViewItem.ImageIndex = itemsListView.SmallImageList.Images.Count - 1;
      }
    }

    #region drag and drop
    protected override void itemsListView_DragEnter(object sender, DragEventArgs e) {
      validDragOperation = false;
      if (ReadOnly) return;
      if (e.Effect != DragDropEffects.Copy) return;

      var dropData = e.Data.GetData(HeuristicLab.Common.Constants.DragDropDataFormat);
      if (dropData is IDataAnalysisProblemData) validDragOperation = true;
      else if (dropData is IDataAnalysisProblem) validDragOperation = true;
      else if (dropData is IValueParameter) {
        var param = (IValueParameter)dropData;
        if (param.Value is IDataAnalysisProblemData) validDragOperation = true;
      }
    }

    protected override void itemsListView_DragDrop(object sender, DragEventArgs e) {
      if (e.Effect != DragDropEffects.Copy) return;

      IDataAnalysisProblemData problemData = null;
      var dropData = e.Data.GetData(HeuristicLab.Common.Constants.DragDropDataFormat);
      if (dropData is IDataAnalysisProblemData)
        problemData = (IDataAnalysisProblemData)dropData;
      else if (dropData is IDataAnalysisProblem)
        problemData = ((IDataAnalysisProblem)dropData).ProblemData;
      else if (dropData is IValueParameter) {
        var param = (IValueParameter)dropData;
        problemData = param.Value as DataAnalysisProblemData;
      }
      if (problemData == null) return;

      problemData = (IDataAnalysisProblemData)problemData.Clone();

      try {
        Content.ProblemData = problemData;

        if (!Content.Name.EndsWith(" with changed problemData"))
          Content.Name += " with changed problemData";
        Content.Filename = string.Empty;
        MainFormManager.GetMainForm<HeuristicLab.MainForm.WindowsForms.MainForm>().UpdateTitle();
      } catch (InvalidOperationException invalidOperationException) {
        ErrorHandling.ShowErrorDialog(this, invalidOperationException);
      } catch (ArgumentException argumentException) {
        ErrorHandling.ShowErrorDialog(this, argumentException);
      }
    }
    #endregion

  }
}