1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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4 | *
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5 | * This file is part of HeuristicLab.
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6 | *
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7 | * HeuristicLab is free software: you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation, either version 3 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * HeuristicLab is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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19 | */
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20 | #endregion
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21 |
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22 | using System;
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23 | using System.Collections.Generic;
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24 | using System.Windows.Forms;
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25 | using HeuristicLab.Collections;
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26 | using HeuristicLab.MainForm;
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27 | using HeuristicLab.MainForm.WindowsForms;
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28 | using HeuristicLab.PluginInfrastructure;
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29 |
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30 | namespace HeuristicLab.Core.Views {
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31 | [View("ItemCollection View")]
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32 | [Content(typeof(ItemCollection<>), true)]
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33 | [Content(typeof(IItemCollection<>), false)]
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34 | public partial class ItemCollectionView<T> : ItemView where T : class, IItem {
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35 | protected TypeSelectorDialog typeSelectorDialog;
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36 |
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37 | public new IItemCollection<T> Content {
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38 | get { return (IItemCollection<T>)base.Content; }
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39 | set { base.Content = value; }
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40 | }
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41 |
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42 | public ListView ItemsListView {
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43 | get { return itemsListView; }
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44 | }
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45 |
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46 | public ItemCollectionView() {
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47 | InitializeComponent();
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48 | }
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49 |
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50 | protected override void DeregisterContentEvents() {
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51 | Content.ItemsAdded -= new CollectionItemsChangedEventHandler<T>(Content_ItemsAdded);
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52 | Content.ItemsRemoved -= new CollectionItemsChangedEventHandler<T>(Content_ItemsRemoved);
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53 | Content.CollectionReset -= new CollectionItemsChangedEventHandler<T>(Content_CollectionReset);
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54 | base.DeregisterContentEvents();
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55 | }
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56 | protected override void RegisterContentEvents() {
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57 | base.RegisterContentEvents();
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58 | Content.ItemsAdded += new CollectionItemsChangedEventHandler<T>(Content_ItemsAdded);
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59 | Content.ItemsRemoved += new CollectionItemsChangedEventHandler<T>(Content_ItemsRemoved);
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60 | Content.CollectionReset += new CollectionItemsChangedEventHandler<T>(Content_CollectionReset);
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61 | }
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62 |
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63 | protected override void OnContentChanged() {
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64 | base.OnContentChanged();
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65 | while (itemsListView.Items.Count > 0) RemoveListViewItem(itemsListView.Items[0]);
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66 | viewHost.Content = null;
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67 | if (Content != null) {
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68 | Caption += " (" + Content.GetType().Name + ")";
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69 | foreach (T item in Content)
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70 | AddListViewItem(CreateListViewItem(item));
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71 | SortItemsListView(SortOrder.Ascending);
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72 | }
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73 | }
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74 |
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75 | protected override void SetEnabledStateOfControls() {
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76 | base.SetEnabledStateOfControls();
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77 | if (Content == null) {
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78 | addButton.Enabled = false;
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79 | sortAscendingButton.Enabled = false;
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80 | sortDescendingButton.Enabled = false;
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81 | removeButton.Enabled = false;
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82 | itemsListView.Enabled = false;
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83 | detailsGroupBox.Enabled = false;
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84 | } else {
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85 | addButton.Enabled = !Content.IsReadOnly && !ReadOnly;
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86 | sortAscendingButton.Enabled = itemsListView.Items.Count > 1;
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87 | sortDescendingButton.Enabled = itemsListView.Items.Count > 1;
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88 | removeButton.Enabled = !Content.IsReadOnly && !ReadOnly && itemsListView.SelectedItems.Count > 0;
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89 | itemsListView.Enabled = true;
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90 | detailsGroupBox.Enabled = true;
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91 | }
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92 | }
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93 |
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94 | protected virtual T CreateItem() {
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95 | if (typeSelectorDialog == null) {
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96 | typeSelectorDialog = new TypeSelectorDialog();
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97 | typeSelectorDialog.Caption = "Select Item";
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98 | typeSelectorDialog.TypeSelector.Caption = "Available Items";
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99 | typeSelectorDialog.TypeSelector.Configure(typeof(T), false, true);
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100 | }
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101 |
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102 | if (typeSelectorDialog.ShowDialog(this) == DialogResult.OK) {
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103 | try {
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104 | return (T)typeSelectorDialog.TypeSelector.CreateInstanceOfSelectedType();
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105 | }
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106 | catch (Exception ex) {
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107 | ErrorHandling.ShowErrorDialog(this, ex);
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108 | }
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109 | }
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110 | return null;
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111 | }
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112 | protected virtual ListViewItem CreateListViewItem(T item) {
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113 | ListViewItem listViewItem = new ListViewItem();
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114 | listViewItem.Text = item.ToString();
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115 | listViewItem.ToolTipText = item.ItemName + ": " + item.ItemDescription;
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116 | listViewItem.Tag = item;
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117 | itemsListView.SmallImageList.Images.Add(item.ItemImage);
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118 | listViewItem.ImageIndex = itemsListView.SmallImageList.Images.Count - 1;
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119 | return listViewItem;
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120 | }
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121 | protected virtual void AddListViewItem(ListViewItem listViewItem) {
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122 | itemsListView.Items.Add(listViewItem);
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123 | ((T)listViewItem.Tag).ItemImageChanged += new EventHandler(Item_ItemImageChanged);
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124 | ((T)listViewItem.Tag).ToStringChanged += new EventHandler(Item_ToStringChanged);
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125 | AdjustListViewColumnSizes();
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126 | sortAscendingButton.Enabled = itemsListView.Items.Count > 1;
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127 | sortDescendingButton.Enabled = itemsListView.Items.Count > 1;
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128 | }
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129 | protected virtual void RemoveListViewItem(ListViewItem listViewItem) {
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130 | ((T)listViewItem.Tag).ItemImageChanged -= new EventHandler(Item_ItemImageChanged);
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131 | ((T)listViewItem.Tag).ToStringChanged -= new EventHandler(Item_ToStringChanged);
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132 | listViewItem.Remove();
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133 | foreach (ListViewItem other in itemsListView.Items)
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134 | if (other.ImageIndex > listViewItem.ImageIndex) other.ImageIndex--;
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135 | itemsListView.SmallImageList.Images.RemoveAt(listViewItem.ImageIndex);
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136 | sortAscendingButton.Enabled = itemsListView.Items.Count > 1;
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137 | sortDescendingButton.Enabled = itemsListView.Items.Count > 1;
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138 | }
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139 | protected virtual void UpdateListViewItemImage(ListViewItem listViewItem) {
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140 | int i = listViewItem.ImageIndex;
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141 | listViewItem.ImageList.Images[i] = ((T)listViewItem.Tag).ItemImage;
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142 | listViewItem.ImageIndex = -1;
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143 | listViewItem.ImageIndex = i;
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144 | }
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145 | protected virtual void UpdateListViewItemText(ListViewItem listViewItem) {
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146 | if (!listViewItem.Text.Equals(listViewItem.Tag.ToString()))
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147 | listViewItem.Text = listViewItem.Tag.ToString();
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148 | }
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149 | protected virtual IEnumerable<ListViewItem> GetListViewItemsForItem(T item) {
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150 | foreach (ListViewItem listViewItem in itemsListView.Items) {
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151 | if (((T)listViewItem.Tag) == item)
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152 | yield return listViewItem;
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153 | }
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154 | }
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155 |
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156 | #region ListView Events
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157 | protected virtual void itemsListView_SelectedIndexChanged(object sender, EventArgs e) {
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158 | removeButton.Enabled = (Content != null) && !Content.IsReadOnly && !ReadOnly && itemsListView.SelectedItems.Count > 0;
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159 | AdjustListViewColumnSizes();
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160 | if (itemsListView.SelectedItems.Count == 1) {
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161 | T item = (T)itemsListView.SelectedItems[0].Tag;
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162 | detailsGroupBox.Enabled = true;
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163 | viewHost.Content = item;
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164 | } else {
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165 | viewHost.Content = null;
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166 | detailsGroupBox.Enabled = false;
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167 | }
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168 | }
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169 | protected virtual void itemsListView_KeyDown(object sender, KeyEventArgs e) {
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170 | if (e.KeyCode == Keys.Delete) {
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171 | if ((itemsListView.SelectedItems.Count > 0) && !Content.IsReadOnly && !ReadOnly) {
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172 | foreach (ListViewItem item in itemsListView.SelectedItems)
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173 | Content.Remove((T)item.Tag);
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174 | }
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175 | }
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176 | }
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177 | protected virtual void itemsListView_DoubleClick(object sender, EventArgs e) {
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178 | if (itemsListView.SelectedItems.Count == 1) {
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179 | T item = (T)itemsListView.SelectedItems[0].Tag;
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180 | IContentView view = MainFormManager.MainForm.ShowContent(item);
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181 | if (view != null) {
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182 | view.ReadOnly = ReadOnly;
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183 | view.Locked = Locked;
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184 | }
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185 | }
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186 | }
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187 | protected virtual void itemsListView_ItemDrag(object sender, ItemDragEventArgs e) {
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188 | if (!Locked) {
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189 | ListViewItem listViewItem = (ListViewItem)e.Item;
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190 | T item = (T)listViewItem.Tag;
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191 | DataObject data = new DataObject();
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192 | data.SetData("Type", item.GetType());
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193 | data.SetData("Value", item);
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194 | if (Content.IsReadOnly || ReadOnly) {
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195 | DoDragDrop(data, DragDropEffects.Copy | DragDropEffects.Link);
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196 | } else {
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197 | DragDropEffects result = DoDragDrop(data, DragDropEffects.Copy | DragDropEffects.Link | DragDropEffects.Move);
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198 | if ((result & DragDropEffects.Move) == DragDropEffects.Move)
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199 | Content.Remove(item);
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200 | }
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201 | }
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202 | }
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203 | protected virtual void itemsListView_DragEnterOver(object sender, DragEventArgs e) {
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204 | e.Effect = DragDropEffects.None;
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205 | Type type = e.Data.GetData("Type") as Type;
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206 | if (!Content.IsReadOnly && !ReadOnly && (type != null) && (typeof(T).IsAssignableFrom(type))) {
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207 | if ((e.KeyState & 32) == 32) e.Effect = DragDropEffects.Link; // ALT key
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208 | else if ((e.KeyState & 4) == 4) e.Effect = DragDropEffects.Move; // SHIFT key
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209 | else if ((e.AllowedEffect & DragDropEffects.Copy) == DragDropEffects.Copy) e.Effect = DragDropEffects.Copy;
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210 | else if ((e.AllowedEffect & DragDropEffects.Move) == DragDropEffects.Move) e.Effect = DragDropEffects.Move;
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211 | else if ((e.AllowedEffect & DragDropEffects.Link) == DragDropEffects.Link) e.Effect = DragDropEffects.Link;
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212 | }
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213 | }
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214 | protected virtual void itemsListView_DragDrop(object sender, DragEventArgs e) {
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215 | if (e.Effect != DragDropEffects.None) {
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216 | T item = e.Data.GetData("Value") as T;
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217 | if ((e.Effect & DragDropEffects.Copy) == DragDropEffects.Copy) item = (T)item.Clone();
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218 | Content.Add(item);
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219 | }
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220 | }
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221 | #endregion
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222 |
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223 | #region Button Events
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224 | protected virtual void addButton_Click(object sender, EventArgs e) {
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225 | T item = CreateItem();
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226 | if (item != null)
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227 | Content.Add(item);
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228 | }
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229 | protected virtual void sortAscendingButton_Click(object sender, EventArgs e) {
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230 | SortItemsListView(SortOrder.Ascending);
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231 | }
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232 | protected virtual void sortDescendingButton_Click(object sender, EventArgs e) {
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233 | SortItemsListView(SortOrder.Descending);
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234 | }
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235 | protected virtual void removeButton_Click(object sender, EventArgs e) {
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236 | if (itemsListView.SelectedItems.Count > 0) {
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237 | foreach (ListViewItem item in itemsListView.SelectedItems)
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238 | Content.Remove((T)item.Tag);
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239 | itemsListView.SelectedItems.Clear();
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240 | }
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241 | }
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242 | #endregion
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243 |
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244 | #region Content Events
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245 | protected virtual void Content_ItemsAdded(object sender, CollectionItemsChangedEventArgs<T> e) {
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246 | if (InvokeRequired)
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247 | Invoke(new CollectionItemsChangedEventHandler<T>(Content_ItemsAdded), sender, e);
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248 | else
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249 | foreach (T item in e.Items)
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250 | AddListViewItem(CreateListViewItem(item));
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251 | }
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252 | protected virtual void Content_ItemsRemoved(object sender, CollectionItemsChangedEventArgs<T> e) {
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253 | if (InvokeRequired)
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254 | Invoke(new CollectionItemsChangedEventHandler<T>(Content_ItemsRemoved), sender, e);
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255 | else {
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256 | foreach (T item in e.Items) {
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257 | foreach (ListViewItem listViewItem in GetListViewItemsForItem(item)) {
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258 | RemoveListViewItem(listViewItem);
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259 | break;
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260 | }
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261 | }
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262 | }
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263 | }
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264 | protected virtual void Content_CollectionReset(object sender, CollectionItemsChangedEventArgs<T> e) {
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265 | if (InvokeRequired)
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266 | Invoke(new CollectionItemsChangedEventHandler<T>(Content_CollectionReset), sender, e);
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267 | else {
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268 | foreach (T item in e.OldItems) {
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269 | foreach (ListViewItem listViewItem in GetListViewItemsForItem(item)) {
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270 | RemoveListViewItem(listViewItem);
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271 | break;
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272 | }
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273 | }
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274 | foreach (T item in e.Items)
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275 | AddListViewItem(CreateListViewItem(item));
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276 | }
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277 | }
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278 | #endregion
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279 |
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280 | #region Item Events
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281 | protected virtual void Item_ItemImageChanged(object sender, EventArgs e) {
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282 | if (InvokeRequired)
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283 | Invoke(new EventHandler(Item_ItemImageChanged), sender, e);
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284 | else {
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285 | T item = (T)sender;
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286 | foreach (ListViewItem listViewItem in GetListViewItemsForItem(item))
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287 | UpdateListViewItemImage(listViewItem);
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288 | }
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289 | }
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290 | protected virtual void Item_ToStringChanged(object sender, EventArgs e) {
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291 | if (InvokeRequired)
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292 | Invoke(new EventHandler(Item_ToStringChanged), sender, e);
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293 | else {
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294 | T item = (T)sender;
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295 | foreach (ListViewItem listViewItem in GetListViewItemsForItem(item))
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296 | UpdateListViewItemText(listViewItem);
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297 | }
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298 | }
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299 | #endregion
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300 |
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301 | #region Helpers
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302 | protected virtual void SortItemsListView(SortOrder sortOrder) {
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303 | itemsListView.Sorting = SortOrder.None;
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304 | itemsListView.Sorting = sortOrder;
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305 | itemsListView.Sorting = SortOrder.None;
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306 | }
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307 | protected virtual void AdjustListViewColumnSizes() {
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308 | if (itemsListView.Items.Count > 0) {
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309 | for (int i = 0; i < itemsListView.Columns.Count; i++)
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310 | itemsListView.Columns[i].AutoResize(ColumnHeaderAutoResizeStyle.ColumnContent);
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311 | }
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312 | }
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313 | #endregion
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314 | }
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315 | }
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