1 | using System;
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2 | using System.Collections.Generic;
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3 | using System.ComponentModel;
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4 | using System.Drawing;
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5 | using System.Data;
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6 | using System.Linq;
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7 | using System.Text;
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8 | using System.Windows.Forms;
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9 |
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10 | namespace HeuristicLab.DataImporter.Data.View {
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11 | public partial class DataSetView : UserControl {
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12 | private DataSetView() {
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13 | InitializeComponent();
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14 | columnGroupViews = new List<ColumnGroupView>();
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15 | this.AutoScroll = true;
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16 | this.Scroll += new ScrollEventHandler(DataSetView_Scroll);
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17 | this.state = new DataSetState(0, ColumnGroupState.None);
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18 | }
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19 |
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20 | public DataSetView(Model.DataSet dataSet)
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21 | : this() {
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22 | this.DataSet = dataSet;
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23 | this.DataSet.Changed += this.DataSetChanged;
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24 | this.Refresh();
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25 | }
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26 |
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27 | public DataSetView(Model.DataSet dataSet, CommandChain commandChain)
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28 | : this(dataSet) {
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29 | this.CommandChain = commandChain;
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30 | }
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31 |
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32 | private List<ColumnGroupView> columnGroupViews;
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33 |
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34 | private CommandChain commandChain;
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35 | public CommandChain CommandChain {
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36 | get { return this.commandChain; }
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37 | set {
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38 | this.commandChain = value;
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39 | foreach (ColumnGroupView view in this.columnGroupViews)
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40 | view.CommandChain = value;
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41 | }
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42 | }
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43 |
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44 | private int columnGroupMaxWidth;
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45 | public int ColumnGroupMaxWidth {
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46 | get { return columnGroupMaxWidth; }
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47 | set {
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48 | columnGroupMaxWidth = value;
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49 | foreach (ColumnGroupView view in columnGroupViews)
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50 | view.MaxWidth = value;
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51 | }
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52 | }
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53 |
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54 | private Model.DataSet dataSet;
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55 | public Model.DataSet DataSet {
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56 | get { return (Model.DataSet)this.dataSet; }
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57 | private set { this.dataSet = value; }
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58 | }
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59 |
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60 | private DataSetState state;
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61 | public DataSetState State {
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62 | get { return this.state; }
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63 | protected set {
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64 | this.state = value;
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65 | FireStateChanged();
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66 | }
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67 | }
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68 |
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69 | private bool allowReorderColumns;
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70 | public bool AllowReorderColumns {
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71 | set {
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72 | allowReorderColumns = value;
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73 | foreach (ColumnGroupView view in this.columnGroupViews) {
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74 | view.AllowReorderColumns = value;
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75 | }
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76 | }
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77 | get { return allowReorderColumns; }
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78 | }
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79 |
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80 | public override void Refresh() {
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81 | base.Refresh();
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82 |
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83 | //clean up - caution: view.dispose removes disposed view from controls collection
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84 | this.SuspendLayout();
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85 | this.Controls.Clear();
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86 | foreach (ColumnGroupView view in this.columnGroupViews.Reverse<ColumnGroupView>())
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87 | view.Dispose();
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88 | this.columnGroupViews.Clear();
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89 |
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90 | ColumnGroupView ctrl;
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91 | //necessary because otherwise columnGroupsViews are in reverse order
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92 | for (int i = 0; i < this.DataSet.ColumnGroups.Count(); i++) {
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93 | ctrl = new ColumnGroupView(this.DataSet.ColumnGroups.ElementAt(i), this.commandChain);
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94 | ctrl.Activated += new ColumnGroupActivatedEventHandler(ColumnGroupActivated);
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95 | ctrl.StateChanged += new EventHandler(ColumnGroupStateChanged);
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96 | ctrl.MaxWidth = this.columnGroupMaxWidth;
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97 | if (this.DataSet.ColumnGroups.ElementAt(i).Active) {
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98 | ctrl.ColumnGroupActive = true;
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99 | ctrl.FireActivated(false);
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100 | }
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101 | ctrl.Dock = DockStyle.Top | DockStyle.Bottom;
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102 | this.columnGroupViews.Add(ctrl);
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103 | }
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104 | this.Controls.AddRange(this.columnGroupViews.Reverse<ColumnGroupView>().ToArray());
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105 | this.Invalidate();
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106 | this.ResumeLayout();
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107 | }
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108 |
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109 | public void DataSetChanged(object sender, EventArgs e) {
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110 | this.Refresh();
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111 | this.UpdateStateInformation();
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112 | }
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113 |
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114 | public void ColumnGroupActivated(object sender, bool addToActiveColumnGroups) {
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115 | if (!addToActiveColumnGroups) {
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116 | foreach (ColumnGroupView view in this.columnGroupViews)
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117 | view.ColumnGroupActive = view == sender;
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118 | }
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119 | UpdateStateInformation();
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120 | }
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121 |
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122 | public void ColumnGroupStateChanged(object sender, EventArgs e) {
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123 | UpdateStateInformation();
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124 | }
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125 |
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126 | private void UpdateStateInformation() {
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127 | DataSetState state = new DataSetState(0, ColumnGroupState.None);
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128 | foreach (ColumnGroupView view in this.columnGroupViews.Where(cg => cg.ColumnGroupActive))
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129 | state.AddColumnGroupState(view.State);
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130 | if (state.ActiveColumnGroups == 1)
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131 | state.SelectedColumns = DataSet.ActiveColumnGroups.ElementAt(0).SelectedColumns.Count();
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132 | if (!this.state.Equals(state))
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133 | this.State = state;
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134 | }
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135 |
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136 | public event EventHandler StateChanged;
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137 | protected void FireStateChanged() {
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138 | OnStateChanged();
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139 | }
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140 |
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141 | protected virtual void OnStateChanged() {
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142 | if (StateChanged != null) {
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143 | StateChanged(this, new EventArgs());
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144 | }
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145 | }
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146 |
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147 | #region GUI interaction with scroll bars
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148 | private Point scrollposition;
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149 | private void DataSetView_Scroll(object sender, ScrollEventArgs e) {
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150 | scrollposition.X = this.DisplayRectangle.X;
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151 | scrollposition.Y = this.DisplayRectangle.Y;
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152 | }
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153 |
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154 | protected override Point ScrollToControl(Control activeControl) {
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155 | return scrollposition;
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156 | }
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157 | #endregion
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158 | }
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159 | }
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