#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2011 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.Linq;
using System.Windows.Forms;
using HeuristicLab.Clients.Hive;
using HeuristicLab.Clients.Hive.JobManager.Views;
using HeuristicLab.Core.Views;
using HeuristicLab.MainForm;

namespace HeuristicLab.HiveEngine.Views {
  [View("Hive Engine View")]
  [Content(typeof(HiveEngine), IsDefaultView = true)]
  public sealed partial class HiveEngineView : ItemView {
    private readonly HiveResourceSelectorDialog hiveResourceSelectorDialog = new HiveResourceSelectorDialog(Guid.Empty, Guid.Empty);

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

    public HiveEngineView() {
      InitializeComponent();
    }

    protected override void DeregisterContentEvents() {
      Content.ExecutionTimeOnHiveChanged -= new EventHandler(Content_ExecutionTimeOnHiveChanged);
      Content.ExecutionTimeChanged -= new EventHandler(Content_ExecutionTimeChanged);
      base.DeregisterContentEvents();
    }

    protected override void RegisterContentEvents() {
      base.RegisterContentEvents();
      Content.ExecutionTimeOnHiveChanged += new EventHandler(Content_ExecutionTimeOnHiveChanged);
      Content.ExecutionTimeChanged += new EventHandler(Content_ExecutionTimeChanged);
    }

    #region Event Handlers (Content)
    private void Content_ExecutionTimeChanged(object sender, EventArgs e) {
      if (InvokeRequired) {
        Invoke(new EventHandler(Content_ExecutionTimeChanged), sender, e);
      } else {
        executionTimeTextBox.Text = Content.ExecutionTime.ToString();
      }
    }

    private void Content_ExecutionTimeOnHiveChanged(object sender, EventArgs e) {
      if (InvokeRequired) {
        Invoke(new EventHandler(Content_ExecutionTimeOnHiveChanged), sender, e);
      } else {
        executionTimeOnHiveTextBox.Text = Content.ExecutionTimeOnHive.ToString();
      }
    }
    #endregion

    protected override void OnContentChanged() {
      base.OnContentChanged();
      if (Content == null) {
        projectNameTextBox.Text = string.Empty;
        priorityComboBox.SelectedIndex = 1;
        executionTimeOnHiveTextBox.Text = string.Empty;
        hiveExperimentListView.Content = null;
        logView.Content = null;
      } else {
        if (Content.ProjectId != null && Content.ProjectId != Guid.Empty) {
          var project = HiveServiceLocator.Instance.CallHiveService(s => s.GetProject(Content.ProjectId));
          if (project != null) projectNameTextBox.Text = project.Name;
        } else {
          projectNameTextBox.Text = string.Empty;
        }

        if (Content.Priority >= 0 && Content.Priority < priorityComboBox.Items.Count) {
          priorityComboBox.SelectedIndex = Content.Priority;
        } else {
          priorityComboBox.SelectedIndex = 1;
        }

        executionTimeOnHiveTextBox.Text = Content.ExecutionTimeOnHive.ToString();
        hiveExperimentListView.Content = Content.Jobs;
        logView.Content = Content.Log;
      }
    }

    protected override void SetEnabledStateOfControls() {
      base.SetEnabledStateOfControls();

      searchButton.Enabled = Content != null && !ReadOnly && !Locked;
      projectNameTextBox.Enabled = Content != null && !ReadOnly && !Locked;
      priorityComboBox.Enabled = Content != null && !ReadOnly && !Locked;
    }

    private void searchButton_Click(object sender, EventArgs e) {
      hiveResourceSelectorDialog.SelectedProjectId = Content != null ? Content.ProjectId : Guid.Empty;
      hiveResourceSelectorDialog.SelectedResourceIds = Content != null ? Content.ResourceIds : new List<Guid>();

      var result = hiveResourceSelectorDialog.ShowDialog(this);
      if (result == DialogResult.OK) {
        var selectedProject = hiveResourceSelectorDialog.SelectedProject;
        if (selectedProject != null) {
          projectNameTextBox.Text = selectedProject.Name;
          Content.ProjectId = selectedProject.Id;
          Content.ResourceIds = hiveResourceSelectorDialog.SelectedResources.Select(x => x.Id).ToList();
        } else {
          projectNameTextBox.Text = string.Empty;
          Content.ProjectId = Guid.Empty;
          Content.ResourceIds = new List<Guid>();
        }
      }
    }

    private void priorityComboBox_SelectedIndexChanged(object sender, EventArgs e) {
      if (Content != null && Content.Priority != priorityComboBox.SelectedIndex) {
        Content.Priority = priorityComboBox.SelectedIndex;
      }
    }
  }
}