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.Drawing;
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25 | using System.Windows.Forms;
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26 | using HeuristicLab.Collections;
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27 | using HeuristicLab.MainForm;
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28 | using HeuristicLab.MainForm.WindowsForms;
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29 |
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30 | namespace HeuristicLab.Core.Views {
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31 | /// <summary>
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32 | /// The visual representation of all variables in a specified scope.
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33 | /// </summary>
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34 | [View("ItemList View")]
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35 | [Content(typeof(ItemList<>), true)]
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36 | [Content(typeof(IItemList<>), false)]
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37 | public partial class ItemListView<T> : ItemView where T : class, IItem {
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38 | protected TypeSelectorDialog typeSelectorDialog;
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39 |
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40 | /// <summary>
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41 | /// Gets or sets the scope whose variables to represent visually.
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42 | /// </summary>
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43 | /// <remarks>Uses property <see cref="ViewBase.Item"/> of base class <see cref="ViewBase"/>.
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44 | /// No won data storage present.</remarks>
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45 | public new IItemList<T> Content {
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46 | get { return (IItemList<T>)base.Content; }
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47 | set { base.Content = value; }
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48 | }
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49 |
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50 | public ListView ItemsListView {
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51 | get { return itemsListView; }
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52 | }
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53 |
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54 | /// <summary>
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55 | /// Initializes a new instance of <see cref="VariablesScopeView"/> with caption "Variables Scope View".
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56 | /// </summary>
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57 | public ItemListView() {
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58 | InitializeComponent();
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59 | Caption = "Item List";
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60 | }
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61 | public ItemListView(IItemList<T> content)
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62 | : this() {
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63 | Content = content;
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64 | }
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65 |
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66 | /// <summary>
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67 | /// Removes the eventhandlers from the underlying <see cref="IScope"/>.
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68 | /// </summary>
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69 | /// <remarks>Calls <see cref="ViewBase.RemoveItemEvents"/> of base class <see cref="ViewBase"/>.</remarks>
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70 | protected override void DeregisterContentEvents() {
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71 | Content.ItemsAdded -= new CollectionItemsChangedEventHandler<IndexedItem<T>>(Content_ItemsAdded);
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72 | Content.ItemsRemoved -= new CollectionItemsChangedEventHandler<IndexedItem<T>>(Content_ItemsRemoved);
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73 | Content.ItemsReplaced -= new CollectionItemsChangedEventHandler<IndexedItem<T>>(Content_ItemsReplaced);
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74 | Content.ItemsMoved -= new CollectionItemsChangedEventHandler<IndexedItem<T>>(Content_ItemsMoved);
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75 | Content.CollectionReset -= new CollectionItemsChangedEventHandler<IndexedItem<T>>(Content_CollectionReset);
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76 | base.DeregisterContentEvents();
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77 | }
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78 |
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79 | /// <summary>
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80 | /// Adds eventhandlers to the underlying <see cref="IScope"/>.
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81 | /// </summary>
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82 | /// <remarks>Calls <see cref="ViewBase.AddItemEvents"/> of base class <see cref="ViewBase"/>.</remarks>
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83 | protected override void RegisterContentEvents() {
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84 | base.RegisterContentEvents();
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85 | Content.ItemsAdded += new CollectionItemsChangedEventHandler<IndexedItem<T>>(Content_ItemsAdded);
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86 | Content.ItemsRemoved += new CollectionItemsChangedEventHandler<IndexedItem<T>>(Content_ItemsRemoved);
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87 | Content.ItemsReplaced += new CollectionItemsChangedEventHandler<IndexedItem<T>>(Content_ItemsReplaced);
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88 | Content.ItemsMoved += new CollectionItemsChangedEventHandler<IndexedItem<T>>(Content_ItemsMoved);
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89 | Content.CollectionReset += new CollectionItemsChangedEventHandler<IndexedItem<T>>(Content_CollectionReset);
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90 | }
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91 |
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92 | protected override void OnContentChanged() {
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93 | base.OnContentChanged();
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94 | Caption = "Item List";
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95 | while (itemsListView.Items.Count > 0) RemoveListViewItem(itemsListView.Items[0]);
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96 | viewHost.Content = null;
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97 | if (Content != null) {
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98 | Caption += " (" + Content.GetType().Name + ")";
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99 | foreach (T item in Content)
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100 | AddListViewItem(CreateListViewItem(item));
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101 | }
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102 | SetEnabledStateOfControls();
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103 | }
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104 |
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105 | protected override void OnReadOnlyChanged() {
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106 | base.OnReadOnlyChanged();
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107 | SetEnabledStateOfControls();
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108 | }
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109 |
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110 | private void SetEnabledStateOfControls() {
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111 | if (Content == null) {
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112 | addButton.Enabled = false;
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113 | moveUpButton.Enabled = false;
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114 | moveDownButton.Enabled = false;
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115 | removeButton.Enabled = false;
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116 | itemsListView.Enabled = false;
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117 | detailsGroupBox.Enabled = false;
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118 | } else {
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119 | addButton.Enabled = !Content.IsReadOnly && !ReadOnly;
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120 | moveUpButton.Enabled = itemsListView.SelectedItems.Count == 1 &&
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121 | itemsListView.SelectedIndices[0] != 0 &&
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122 | !Content.IsReadOnly && !ReadOnly;
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123 | moveDownButton.Enabled = itemsListView.SelectedItems.Count == 1 &&
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124 | itemsListView.SelectedIndices[0] != itemsListView.Items.Count - 1 &&
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125 | !Content.IsReadOnly && !ReadOnly;
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126 | removeButton.Enabled = itemsListView.SelectedItems.Count > 0 &&
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127 | !Content.IsReadOnly && !ReadOnly;
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128 | itemsListView.Enabled = true;
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129 | detailsGroupBox.Enabled = true;
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130 | }
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131 | }
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132 |
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133 | protected virtual T CreateItem() {
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134 | if (typeSelectorDialog == null) {
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135 | typeSelectorDialog = new TypeSelectorDialog();
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136 | typeSelectorDialog.Caption = "Select Item";
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137 | typeSelectorDialog.TypeSelector.Caption = "Available Items";
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138 | typeSelectorDialog.TypeSelector.Configure(typeof(T), false, false);
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139 | }
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140 |
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141 | if (typeSelectorDialog.ShowDialog(this) == DialogResult.OK) {
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142 | try {
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143 | return (T)typeSelectorDialog.TypeSelector.CreateInstanceOfSelectedType();
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144 | }
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145 | catch (Exception ex) {
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146 | Auxiliary.ShowErrorMessageBox(ex);
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147 | }
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148 | }
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149 | return null;
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150 | }
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151 | protected virtual ListViewItem CreateListViewItem(T item) {
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152 | ListViewItem listViewItem = new ListViewItem();
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153 | listViewItem.Text = item.ToString();
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154 | listViewItem.ToolTipText = item.ItemName + ": " + item.ItemDescription;
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155 | listViewItem.Tag = item;
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156 | itemsListView.SmallImageList.Images.Add(item.ItemImage);
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157 | listViewItem.ImageIndex = itemsListView.SmallImageList.Images.Count - 1;
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158 | return listViewItem;
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159 | }
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160 | protected virtual void AddListViewItem(ListViewItem listViewItem) {
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161 | itemsListView.Items.Add(listViewItem);
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162 | ((T)listViewItem.Tag).ItemImageChanged += new EventHandler(Item_ItemImageChanged);
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163 | ((T)listViewItem.Tag).ToStringChanged += new EventHandler(Item_ToStringChanged);
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164 | AdjustListViewColumnSizes();
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165 | }
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166 | protected virtual void InsertListViewItem(int index, ListViewItem listViewItem) {
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167 | itemsListView.Items.Insert(index, listViewItem);
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168 | ((T)listViewItem.Tag).ItemImageChanged += new EventHandler(Item_ItemImageChanged);
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169 | ((T)listViewItem.Tag).ToStringChanged += new EventHandler(Item_ToStringChanged);
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170 | AdjustListViewColumnSizes();
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171 | }
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172 | protected virtual void RemoveListViewItem(ListViewItem listViewItem) {
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173 | ((T)listViewItem.Tag).ItemImageChanged -= new EventHandler(Item_ItemImageChanged);
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174 | ((T)listViewItem.Tag).ToStringChanged -= new EventHandler(Item_ToStringChanged);
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175 | listViewItem.Remove();
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176 | foreach (ListViewItem other in itemsListView.Items)
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177 | if (other.ImageIndex > listViewItem.ImageIndex) other.ImageIndex--;
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178 | itemsListView.SmallImageList.Images.RemoveAt(listViewItem.ImageIndex);
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179 | }
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180 | protected virtual void UpdateListViewItemImage(ListViewItem listViewItem) {
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181 | int i = listViewItem.ImageIndex;
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182 | listViewItem.ImageList.Images[i] = ((T)listViewItem.Tag).ItemImage;
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183 | listViewItem.ImageIndex = -1;
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184 | listViewItem.ImageIndex = i;
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185 | }
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186 | protected virtual void UpdateListViewItemText(ListViewItem listViewItem) {
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187 | if (!listViewItem.Text.Equals(listViewItem.Tag.ToString()))
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188 | listViewItem.Text = listViewItem.Tag.ToString();
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189 | }
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190 |
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191 | #region ListView Events
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192 | protected virtual void itemsListView_SelectedIndexChanged(object sender, EventArgs e) {
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193 | moveUpButton.Enabled = itemsListView.SelectedItems.Count == 1 &&
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194 | itemsListView.SelectedIndices[0] != 0 &&
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195 | (Content != null) && !Content.IsReadOnly && !ReadOnly;
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196 | moveDownButton.Enabled = itemsListView.SelectedItems.Count == 1 &&
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197 | itemsListView.SelectedIndices[0] != itemsListView.Items.Count - 1 &&
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198 | (Content != null) && !Content.IsReadOnly && !ReadOnly;
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199 | removeButton.Enabled = itemsListView.SelectedItems.Count > 0 &&
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200 | (Content != null) && !Content.IsReadOnly && !ReadOnly;
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201 |
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202 | if (itemsListView.SelectedItems.Count == 1) {
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203 | T item = (T)itemsListView.SelectedItems[0].Tag;
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204 | detailsGroupBox.Enabled = true;
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205 | viewHost.ViewType = null;
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206 | viewHost.Content = item;
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207 | } else {
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208 | viewHost.Content = null;
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209 | detailsGroupBox.Enabled = false;
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210 | }
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211 | }
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212 |
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213 | protected virtual void itemsListView_KeyDown(object sender, KeyEventArgs e) {
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214 | if (e.KeyCode == Keys.Delete) {
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215 | if ((itemsListView.SelectedItems.Count > 0) && !Content.IsReadOnly && !ReadOnly) {
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216 | foreach (ListViewItem item in itemsListView.SelectedItems)
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217 | Content.RemoveAt(item.Index);
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218 | }
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219 | }
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220 | }
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221 |
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222 | protected virtual void itemsListView_DoubleClick(object sender, EventArgs e) {
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223 | if (itemsListView.SelectedItems.Count == 1) {
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224 | T item = (T)itemsListView.SelectedItems[0].Tag;
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225 | IContentView view = MainFormManager.CreateDefaultView(item);
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226 | if (view != null) {
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227 | view.ReadOnly = ReadOnly;
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228 | view.Locked = Locked;
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229 | view.Show();
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230 | }
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231 | }
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232 | }
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233 |
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234 | protected virtual void itemsListView_ItemDrag(object sender, ItemDragEventArgs e) {
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235 | if (!Locked) {
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236 | ListViewItem listViewItem = (ListViewItem)e.Item;
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237 | T item = (T)listViewItem.Tag;
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238 | DataObject data = new DataObject();
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239 | data.SetData("Type", item.GetType());
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240 | data.SetData("Value", item);
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241 | if (Content.IsReadOnly || ReadOnly) {
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242 | DoDragDrop(data, DragDropEffects.Copy | DragDropEffects.Link);
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243 | } else {
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244 | DragDropEffects result = DoDragDrop(data, DragDropEffects.Copy | DragDropEffects.Link | DragDropEffects.Move);
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245 | if ((result & DragDropEffects.Move) == DragDropEffects.Move)
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246 | Content.RemoveAt(listViewItem.Index);
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247 | }
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248 | }
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249 | }
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250 | protected virtual void itemsListView_DragEnterOver(object sender, DragEventArgs e) {
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251 | e.Effect = DragDropEffects.None;
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252 | Type type = e.Data.GetData("Type") as Type;
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253 | if (!Content.IsReadOnly && !ReadOnly && (type != null) && (typeof(T).IsAssignableFrom(type))) {
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254 | if ((e.KeyState & 8) == 8) e.Effect = DragDropEffects.Copy; // CTRL key
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255 | else if ((e.KeyState & 4) == 4) e.Effect = DragDropEffects.Move; // SHIFT key
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256 | else if ((e.AllowedEffect & DragDropEffects.Link) == DragDropEffects.Link) e.Effect = DragDropEffects.Link;
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257 | else if ((e.AllowedEffect & DragDropEffects.Copy) == DragDropEffects.Copy) e.Effect = DragDropEffects.Copy;
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258 | else if ((e.AllowedEffect & DragDropEffects.Move) == DragDropEffects.Move) e.Effect = DragDropEffects.Move;
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259 | }
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260 | }
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261 | protected virtual void itemsListView_DragDrop(object sender, DragEventArgs e) {
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262 | if (e.Effect != DragDropEffects.None) {
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263 | T item = e.Data.GetData("Value") as T;
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264 | if ((e.Effect & DragDropEffects.Copy) == DragDropEffects.Copy) item = (T)item.Clone();
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265 |
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266 | Point p = itemsListView.PointToClient(new Point(e.X, e.Y));
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267 | ListViewItem listViewItem = itemsListView.GetItemAt(p.X, p.Y);
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268 | if (listViewItem != null) Content.Insert(listViewItem.Index, item);
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269 | else Content.Add(item);
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270 | }
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271 | }
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272 | #endregion
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273 |
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274 | #region Button Events
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275 | protected virtual void addButton_Click(object sender, EventArgs e) {
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276 | T item = CreateItem();
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277 | if (item != null)
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278 | Content.Add(item);
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279 | }
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280 | protected virtual void moveUpButton_Click(object sender, EventArgs e) {
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281 | if (itemsListView.SelectedItems.Count == 1) {
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282 | int index = itemsListView.SelectedIndices[0];
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283 | T item = Content[index - 1];
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284 | Content[index - 1] = Content[index];
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285 | itemsListView.Items[index].Selected = false;
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286 | itemsListView.Items[index - 1].Selected = true;
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287 | Content[index] = item;
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288 | }
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289 | }
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290 | protected virtual void moveDownButton_Click(object sender, EventArgs e) {
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291 | if (itemsListView.SelectedItems.Count == 1) {
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292 | int index = itemsListView.SelectedIndices[0];
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293 | T item = Content[index + 1];
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294 | Content[index + 1] = Content[index];
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295 | itemsListView.Items[index].Selected = false;
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296 | itemsListView.Items[index + 1].Selected = true;
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297 | Content[index] = item;
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298 | }
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299 | }
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300 | protected virtual void removeButton_Click(object sender, EventArgs e) {
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301 | if (itemsListView.SelectedItems.Count > 0) {
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302 | foreach (ListViewItem item in itemsListView.SelectedItems)
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303 | Content.RemoveAt(item.Index);
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304 | }
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305 | }
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306 | #endregion
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307 |
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308 | #region Content Events
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309 | protected virtual void Content_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<T>> e) {
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310 | if (InvokeRequired)
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311 | Invoke(new CollectionItemsChangedEventHandler<IndexedItem<T>>(Content_ItemsAdded), sender, e);
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312 | else
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313 | foreach (IndexedItem<T> item in e.Items)
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314 | InsertListViewItem(item.Index, CreateListViewItem(item.Value));
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315 | }
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316 | protected virtual void Content_ItemsRemoved(object sender, CollectionItemsChangedEventArgs<IndexedItem<T>> e) {
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317 | if (InvokeRequired)
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318 | Invoke(new CollectionItemsChangedEventHandler<IndexedItem<T>>(Content_ItemsRemoved), sender, e);
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319 | else {
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320 | List<ListViewItem> listViewItems = new List<ListViewItem>();
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321 | foreach (IndexedItem<T> item in e.Items)
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322 | listViewItems.Add(itemsListView.Items[item.Index]);
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323 | foreach (ListViewItem listViewItem in listViewItems)
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324 | RemoveListViewItem(listViewItem);
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325 | }
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326 | }
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327 | protected virtual void Content_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<IndexedItem<T>> e) {
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328 | if (InvokeRequired)
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329 | Invoke(new CollectionItemsChangedEventHandler<IndexedItem<T>>(Content_ItemsReplaced), sender, e);
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330 | else {
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331 | int[] selected = new int[itemsListView.SelectedIndices.Count];
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332 | itemsListView.SelectedIndices.CopyTo(selected, 0);
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333 |
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334 | List<ListViewItem> listViewItems = new List<ListViewItem>();
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335 | foreach (IndexedItem<T> item in e.OldItems)
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336 | listViewItems.Add(itemsListView.Items[item.Index]);
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337 | foreach (ListViewItem listViewItem in listViewItems)
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338 | RemoveListViewItem(listViewItem);
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339 |
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340 | foreach (IndexedItem<T> item in e.Items)
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341 | InsertListViewItem(item.Index, CreateListViewItem(item.Value));
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342 |
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343 | for (int i = 0; i < selected.Length; i++)
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344 | itemsListView.Items[selected[i]].Selected = true;
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345 | }
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346 | }
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347 | protected virtual void Content_ItemsMoved(object sender, CollectionItemsChangedEventArgs<IndexedItem<T>> e) {
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348 | if (InvokeRequired)
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349 | Invoke(new CollectionItemsChangedEventHandler<IndexedItem<T>>(Content_ItemsMoved), sender, e);
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350 | else {
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351 | foreach (IndexedItem<T> item in e.Items) {
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352 | ListViewItem listViewItem = itemsListView.Items[item.Index];
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353 | listViewItem.Tag = item.Value;
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354 | UpdateListViewItemImage(listViewItem);
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355 | UpdateListViewItemText(listViewItem);
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356 | }
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357 | }
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358 | }
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359 | protected virtual void Content_CollectionReset(object sender, CollectionItemsChangedEventArgs<IndexedItem<T>> e) {
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360 | if (InvokeRequired)
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361 | Invoke(new CollectionItemsChangedEventHandler<IndexedItem<T>>(Content_CollectionReset), sender, e);
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362 | else {
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363 | List<ListViewItem> listViewItems = new List<ListViewItem>();
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364 | foreach (IndexedItem<T> item in e.OldItems)
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365 | listViewItems.Add(itemsListView.Items[item.Index]);
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366 | foreach (ListViewItem listViewItem in listViewItems)
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367 | RemoveListViewItem(listViewItem);
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368 |
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369 | foreach (IndexedItem<T> item in e.Items)
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370 | InsertListViewItem(item.Index, CreateListViewItem(item.Value));
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371 | }
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372 | }
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373 | #endregion
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374 |
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375 | #region Item Events
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376 | protected virtual void Item_ItemImageChanged(object sender, EventArgs e) {
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377 | if (InvokeRequired)
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378 | Invoke(new EventHandler(Item_ItemImageChanged), sender, e);
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379 | else {
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380 | T item = (T)sender;
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381 | foreach (ListViewItem listViewItem in itemsListView.Items) {
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382 | if (((T)listViewItem.Tag) == item)
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383 | UpdateListViewItemImage(listViewItem);
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384 | }
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385 | }
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386 | }
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387 | protected virtual void Item_ToStringChanged(object sender, EventArgs e) {
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388 | if (InvokeRequired)
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389 | Invoke(new EventHandler(Item_ToStringChanged), sender, e);
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390 | else {
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391 | T item = (T)sender;
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392 | foreach (ListViewItem listViewItem in itemsListView.Items) {
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393 | if (((T)listViewItem.Tag) == item)
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394 | UpdateListViewItemText(listViewItem);
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395 | }
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396 | AdjustListViewColumnSizes();
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397 | }
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398 | }
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399 | #endregion
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400 |
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401 | #region Helpers
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402 | protected virtual void AdjustListViewColumnSizes() {
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403 | if (itemsListView.Items.Count > 0) {
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404 | for (int i = 0; i < itemsListView.Columns.Count; i++)
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405 | itemsListView.Columns[i].AutoResize(ColumnHeaderAutoResizeStyle.ColumnContent);
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406 | }
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407 | }
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408 | #endregion
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409 | }
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410 | }
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