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.Windows.Forms;
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24 | using HeuristicLab.Collections;
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25 | using HeuristicLab.Common;
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26 | using HeuristicLab.Core.Views;
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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.Clients.Hive.Views {
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31 | [View("ItemTree View")]
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32 | [Content(typeof(IItemTree), IsDefaultView = false)]
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33 | public sealed partial class ItemTreeView : ItemView {
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34 | public new IItemTree Content {
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35 | get { return (IItemTree)base.Content; }
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36 | set { base.Content = value; }
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37 | }
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38 |
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39 | public ItemTreeView() {
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40 | InitializeComponent();
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41 | }
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42 |
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43 | protected override void DeregisterContentEvents() {
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44 | foreach (TreeNode node in treeView.Nodes) {
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45 | DeregisterContentEvents((IItemTree)node.Tag, node);
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46 | }
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47 | base.DeregisterContentEvents();
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48 | }
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49 |
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50 | private void DeregisterContentEvents(IItemTree item, TreeNode node) {
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51 | item.ItemsAdded -= new CollectionItemsChangedEventHandler<IItemTree>(item_ItemsAdded);
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52 | item.ItemsRemoved -= new CollectionItemsChangedEventHandler<IItemTree>(item_ItemsRemoved);
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53 | item.CollectionReset -= new CollectionItemsChangedEventHandler<IItemTree>(item_CollectionReset);
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54 | item.ToStringChanged -= new EventHandler(item_ToStringChanged);
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55 | item.ItemImageChanged -= new EventHandler(item_ItemImageChanged);
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56 | foreach (TreeNode childNode in node.Nodes) {
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57 | DeregisterContentEvents((IItemTree)childNode.Tag, childNode);
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58 | }
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59 | }
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60 |
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61 | protected override void RegisterContentEvents() {
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62 | base.RegisterContentEvents();
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63 | foreach (TreeNode node in treeView.Nodes) {
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64 | RegisterContentEvents((IItemTree)node.Tag, node);
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65 | }
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66 | }
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67 |
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68 | private void RegisterContentEvents(IItemTree item, TreeNode node) {
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69 | item.ItemsAdded += new CollectionItemsChangedEventHandler<IItemTree>(item_ItemsAdded);
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70 | item.ItemsRemoved += new CollectionItemsChangedEventHandler<IItemTree>(item_ItemsRemoved);
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71 | item.CollectionReset += new CollectionItemsChangedEventHandler<IItemTree>(item_CollectionReset);
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72 | item.ToStringChanged += new EventHandler(item_ToStringChanged);
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73 | item.ItemImageChanged += new EventHandler(item_ItemImageChanged);
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74 | foreach (TreeNode childNode in node.Nodes) {
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75 | RegisterContentEvents((IItemTree)childNode.Tag, childNode);
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76 | }
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77 | }
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78 |
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79 | #region Event Handlers (Content)
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80 | private void item_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IItemTree> e) {
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81 | if (InvokeRequired) {
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82 | Invoke(new CollectionItemsChangedEventHandler<IItemTree>(item_ItemsAdded), sender, e);
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83 | } else {
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84 | TreeNode node = GetNodeByItem(sender as IItemTree);
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85 | foreach (IItemTree item in e.Items) {
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86 | AddChildNodes(item, node.Nodes, true);
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87 | node.ExpandAll();
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88 | UpdateNodeItemImage(node);
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89 | }
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90 | }
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91 | }
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92 |
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93 | private void item_ItemsRemoved(object sender, CollectionItemsChangedEventArgs<IItemTree> e) {
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94 | if (InvokeRequired) {
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95 | Invoke(new CollectionItemsChangedEventHandler<IItemTree>(item_ItemsRemoved), sender, e);
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96 | } else {
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97 | TreeNode node = GetNodeByItem(sender as IItemTree);
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98 | foreach (IItemTree item in e.Items) {
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99 | RemoveChildNodes(item, node.Nodes);
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100 | }
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101 | RebuildImageList();
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102 | }
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103 | }
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104 |
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105 | private void item_CollectionReset(object sender, CollectionItemsChangedEventArgs<IItemTree> e) {
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106 | if (InvokeRequired) {
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107 | Invoke(new CollectionItemsChangedEventHandler<IItemTree>(item_CollectionReset), sender, e);
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108 | } else {
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109 | TreeNode node = GetNodeByItem(sender as IItemTree);
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110 | foreach (IItemTree item in e.OldItems) {
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111 | RemoveChildNodes(item, node.Nodes);
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112 | }
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113 | RebuildImageList();
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114 | foreach (IItemTree item in e.Items) {
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115 | AddChildNodes(item, node.Nodes, true);
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116 | }
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117 | }
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118 | }
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119 |
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120 | private void item_ToStringChanged(object sender, EventArgs e) {
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121 | if (InvokeRequired) {
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122 | Invoke(new EventHandler(item_ToStringChanged), sender, e);
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123 | } else {
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124 | var item = sender as IItemTree;
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125 | TreeNode node = GetNodeByItem(item);
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126 | node.Text = item.ToString();
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127 | }
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128 | }
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129 |
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130 | private void item_ItemImageChanged(object sender, EventArgs e) {
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131 | if (InvokeRequired) {
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132 | Invoke(new EventHandler(item_ItemImageChanged), sender, e);
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133 | } else {
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134 | var item = sender as IItemTree;
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135 | TreeNode node = GetNodeByItem(item);
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136 | UpdateNodeItemImage(node);
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137 | }
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138 | }
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139 |
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140 | private void treeView_DoubleClick(object sender, EventArgs e) {
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141 | if (InvokeRequired) {
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142 | Invoke(new EventHandler(treeView_DoubleClick), sender, e);
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143 | } else {
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144 | if (treeView.SelectedNode != null) {
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145 | var item = treeView.SelectedNode.Tag as IItemTree;
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146 | if (item != null) {
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147 | IContentView view = MainFormManager.MainForm.ShowContent(item);
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148 | if (view != null) {
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149 | view.ReadOnly = ReadOnly;
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150 | view.Locked = Locked;
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151 | }
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152 | }
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153 | }
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154 | }
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155 | }
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156 | #endregion
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157 |
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158 | protected override void OnContentChanged() {
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159 | base.OnContentChanged();
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160 | if (Content == null) {
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161 | // Add code when content has been changed and is null
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162 | ClearNodes();
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163 | detailsViewHost.Content = null;
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164 | } else {
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165 | // Add code when content has been changed and is not null
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166 | ClearNodes();
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167 | AddChildNodes(Content, treeView.Nodes, false);
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168 | foreach (TreeNode node in treeView.Nodes) {
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169 | UpdateNodeItemImage(node);
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170 | }
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171 | }
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172 | }
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173 |
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174 | private void ClearNodes() {
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175 | treeView.Nodes.Clear();
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176 | }
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177 |
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178 | private void AddChildNodes(IItemTree item, TreeNodeCollection nodes, bool registerEvents) {
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179 | TreeNode node = CreateTreeViewNode(item);
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180 | nodes.Add(node);
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181 | RebuildImageList(node);
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182 | RegisterContentEvents(item, node);
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183 | var childItems = item.GetChildItems();
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184 | foreach (var childItem in childItems) {
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185 | AddChildNodes(childItem, node.Nodes, registerEvents);
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186 | }
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187 | node.ExpandAll();
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188 | }
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189 |
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190 | private void RemoveChildNodes(IItemTree item, TreeNodeCollection treeNodeCollection) {
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191 | int idx = -1;
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192 | for (int i = 0; i < treeNodeCollection.Count; i++) {
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193 | if (treeNodeCollection[i].Tag == item) {
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194 | idx = i; break;
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195 | }
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196 | }
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197 | DeregisterContentEvents(item, treeNodeCollection[idx]);
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198 | treeNodeCollection.RemoveAt(idx);
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199 | }
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200 |
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201 | private TreeNode GetNodeByItem(IItemTree item) {
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202 | TreeNode found = null;
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203 | foreach (TreeNode node in treeView.Nodes) {
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204 | found = GetNodeByItem(node, item);
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205 | if (found != null)
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206 | return found;
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207 | }
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208 | return null;
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209 | }
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210 |
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211 | private TreeNode GetNodeByItem(TreeNode node, IItemTree item) {
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212 | if (node.Tag == item)
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213 | return node;
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214 | TreeNode found = null;
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215 | foreach (TreeNode childNode in node.Nodes) {
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216 | found = GetNodeByItem(childNode, item);
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217 | if (found != null)
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218 | return found;
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219 | }
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220 | return null;
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221 | }
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222 |
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223 | private TreeNode CreateTreeViewNode(IItemTree item) {
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224 | var node = new TreeNode(item.ToString());
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225 | node.Tag = item;
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226 | return node;
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227 | }
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228 |
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229 | private void UpdateNodeItemImage(TreeNode node) {
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230 | if (node == null) throw new ArgumentNullException();
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231 | var item = node.Tag as IItemTree;
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232 | int i = node.ImageIndex;
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233 | this.imageList.Images[i] = item == null ? HeuristicLab.Common.Resources.VSImageLibrary.Nothing : item.ItemImage;
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234 | node.ImageIndex = -1;
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235 | node.ImageIndex = i;
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236 | node.SelectedImageIndex = node.ImageIndex;
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237 | foreach (TreeNode childNode in node.Nodes) {
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238 | UpdateNodeItemImage(childNode);
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239 | }
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240 | }
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241 |
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242 | protected override void SetEnabledStateOfControls() {
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243 | base.SetEnabledStateOfControls();
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244 | // Enable or disable controls based on whether the content is null or the view is set readonly
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245 | }
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246 |
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247 | #region Event Handlers (child controls)
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248 | // Put event handlers of child controls here.
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249 | private void treeView_AfterSelect(object sender, TreeViewEventArgs e) {
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250 | detailsViewHost.Content = (IContent)treeView.SelectedNode.Tag;
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251 | }
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252 | #endregion
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253 |
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254 | private void RebuildImageList() {
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255 | treeView.ImageList.Images.Clear();
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256 | foreach (TreeNode node in treeView.Nodes) {
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257 | RebuildImageList(node);
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258 | }
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259 | }
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260 |
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261 | private void RebuildImageList(TreeNode node) {
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262 | var item = node.Tag as IItemTree;
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263 | treeView.ImageList.Images.Add(item == null ? HeuristicLab.Common.Resources.VSImageLibrary.Nothing : item.ItemImage);
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264 | node.ImageIndex = treeView.ImageList.Images.Count - 1;
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265 | node.SelectedImageIndex = node.ImageIndex;
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266 | foreach (TreeNode childNode in node.Nodes) {
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267 | RebuildImageList(childNode);
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268 | }
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269 | }
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270 | }
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271 | }
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