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source: branches/2457_ExpertSystem/HeuristicLab.Analysis.Views/3.3/IndexedDataTableView.cs @ 16956

Last change on this file since 16956 was 16956, checked in by abeham, 5 years ago

#2457: merged trunk into branch
File size: 29.0 KB
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1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2019 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using System.Collections.Generic;
24using System.Drawing;
25using System.Linq;
26using System.Windows.Forms;
27using System.Windows.Forms.DataVisualization.Charting;
28using HeuristicLab.Collections;
29using HeuristicLab.Core.Views;
30using HeuristicLab.MainForm;
31
32namespace HeuristicLab.Analysis.Views {
33  [View("IndexedDataTable View")]
34  [Content(typeof(IndexedDataTable<>), true)]
35  public partial class IndexedDataTableView<T> : NamedItemView, IConfigureableView {
36    protected List<Series> invisibleSeries;
37    protected Dictionary<IObservableList<Tuple<T, double>>, IndexedDataRow<T>> valuesRowsTable;
38
39    public new IndexedDataTable<T> Content {
40      get { return (IndexedDataTable<T>)base.Content; }
41      set { base.Content = value; }
42    }
43
44    public IndexedDataTableView() {
45      InitializeComponent();
46      valuesRowsTable = new Dictionary<IObservableList<Tuple<T, double>>, IndexedDataRow<T>>();
47      invisibleSeries = new List<Series>();
48      chart.CustomizeAllChartAreas();
49      chart.ChartAreas[0].CursorX.Interval = 1;
50      chart.SuppressExceptions = true;
51      chart.ContextMenuStrip.Items.Add(configureToolStripMenuItem);
52    }
53
54    #region Event Handler Registration
55    protected override void DeregisterContentEvents() {
56      foreach (var row in Content.Rows)
57        DeregisterDataRowEvents(row);
58      Content.VisualPropertiesChanged -= new EventHandler(Content_VisualPropertiesChanged);
59      Content.Rows.ItemsAdded -= new CollectionItemsChangedEventHandler<IndexedDataRow<T>>(Rows_ItemsAdded);
60      Content.Rows.ItemsRemoved -= new CollectionItemsChangedEventHandler<IndexedDataRow<T>>(Rows_ItemsRemoved);
61      Content.Rows.ItemsReplaced -= new CollectionItemsChangedEventHandler<IndexedDataRow<T>>(Rows_ItemsReplaced);
62      Content.Rows.CollectionReset -= new CollectionItemsChangedEventHandler<IndexedDataRow<T>>(Rows_CollectionReset);
63      base.DeregisterContentEvents();
64    }
65
66    protected override void RegisterContentEvents() {
67      base.RegisterContentEvents();
68      Content.VisualPropertiesChanged += new EventHandler(Content_VisualPropertiesChanged);
69      Content.Rows.ItemsAdded += new CollectionItemsChangedEventHandler<IndexedDataRow<T>>(Rows_ItemsAdded);
70      Content.Rows.ItemsRemoved += new CollectionItemsChangedEventHandler<IndexedDataRow<T>>(Rows_ItemsRemoved);
71      Content.Rows.ItemsReplaced += new CollectionItemsChangedEventHandler<IndexedDataRow<T>>(Rows_ItemsReplaced);
72      Content.Rows.CollectionReset += new CollectionItemsChangedEventHandler<IndexedDataRow<T>>(Rows_CollectionReset);
73      foreach (var row in Content.Rows)
74        RegisterDataRowEvents(row);
75    }
76
77    /// <summary>
78    /// Automatically called for every existing data row and whenever a data row is added
79    /// to the data table. Do not call this method directly.
80    /// </summary>
81    /// <param name="row">The DataRow that was added.</param>
82    protected virtual void RegisterDataRowEvents(IndexedDataRow<T> row) {
83      row.NameChanged += new EventHandler(Row_NameChanged);
84      row.VisualPropertiesChanged += new EventHandler(Row_VisualPropertiesChanged);
85      valuesRowsTable.Add(row.Values, row);
86      row.Values.ItemsAdded += new CollectionItemsChangedEventHandler<IndexedItem<Tuple<T, double>>>(Values_ItemsAdded);
87      row.Values.ItemsRemoved += new CollectionItemsChangedEventHandler<IndexedItem<Tuple<T, double>>>(Values_ItemsRemoved);
88      row.Values.ItemsReplaced += new CollectionItemsChangedEventHandler<IndexedItem<Tuple<T, double>>>(Values_ItemsReplaced);
89      row.Values.ItemsMoved += new CollectionItemsChangedEventHandler<IndexedItem<Tuple<T, double>>>(Values_ItemsMoved);
90      row.Values.CollectionReset += new CollectionItemsChangedEventHandler<IndexedItem<Tuple<T, double>>>(Values_CollectionReset);
91    }
92
93    /// <summary>
94    /// Automatically called for every data row that is removed from the DataTable. Do
95    /// not directly call this method.
96    /// </summary>
97    /// <param name="row">The DataRow that was removed.</param>
98    protected virtual void DeregisterDataRowEvents(IndexedDataRow<T> row) {
99      row.Values.ItemsAdded -= new CollectionItemsChangedEventHandler<IndexedItem<Tuple<T, double>>>(Values_ItemsAdded);
100      row.Values.ItemsRemoved -= new CollectionItemsChangedEventHandler<IndexedItem<Tuple<T, double>>>(Values_ItemsRemoved);
101      row.Values.ItemsReplaced -= new CollectionItemsChangedEventHandler<IndexedItem<Tuple<T, double>>>(Values_ItemsReplaced);
102      row.Values.ItemsMoved -= new CollectionItemsChangedEventHandler<IndexedItem<Tuple<T, double>>>(Values_ItemsMoved);
103      row.Values.CollectionReset -= new CollectionItemsChangedEventHandler<IndexedItem<Tuple<T, double>>>(Values_CollectionReset);
104      valuesRowsTable.Remove(row.Values);
105      row.VisualPropertiesChanged -= new EventHandler(Row_VisualPropertiesChanged);
106      row.NameChanged -= new EventHandler(Row_NameChanged);
107    }
108    #endregion
109
110    protected override void OnContentChanged() {
111      base.OnContentChanged();
112      invisibleSeries.Clear();
113      chart.Titles[0].Text = string.Empty;
114      chart.ChartAreas[0].AxisX.Title = string.Empty;
115      chart.ChartAreas[0].AxisY.Title = string.Empty;
116      chart.ChartAreas[0].AxisY2.Title = string.Empty;
117      chart.ChartAreas[0].AxisX.IsLogarithmic = false;
118      chart.ChartAreas[0].AxisX2.IsLogarithmic = false;
119      chart.ChartAreas[0].AxisY.IsLogarithmic = false;
120      chart.ChartAreas[0].AxisY2.IsLogarithmic = false;
121      chart.Series.Clear();
122      if (Content != null) {
123        chart.Titles[0].Text = Content.Name;
124        foreach (var row in Content.Rows)
125          AddDataRow(row);
126        ConfigureChartArea(chart.ChartAreas[0]);
127        RecalculateAxesScale(chart.ChartAreas[0]);
128      }
129    }
130
131    protected override void SetEnabledStateOfControls() {
132      base.SetEnabledStateOfControls();
133      chart.Enabled = Content != null;
134    }
135
136    public void ShowConfiguration() {
137      if (Content != null) {
138        using (var dialog = new DataTableVisualPropertiesDialog<IndexedDataRow<T>>(Content)) {
139          dialog.ShowDialog(this);
140        }
141      } else MessageBox.Show("Nothing to configure.");
142    }
143
144    /// <summary>
145    /// Add the DataRow as a series to the chart.
146    /// </summary>
147    /// <param name="row">DataRow to add as series to the chart.</param>
148    protected virtual void AddDataRow(IndexedDataRow<T> row) {
149      if (row.Values.Count == 0) return;
150
151      Series series = new Series(row.Name);
152      if (row.VisualProperties.DisplayName.Trim() != String.Empty) series.LegendText = row.VisualProperties.DisplayName;
153      else series.LegendText = row.Name;
154      ConfigureSeries(series, row);
155      FillSeriesWithRowValues(series, row);
156
157      chart.Series.Add(series);
158      ConfigureChartArea(chart.ChartAreas[0]);
159      RecalculateAxesScale(chart.ChartAreas[0]);
160      UpdateYCursorInterval();
161    }
162
163    private void ConfigureSeries(Series series, IndexedDataRow<T> row) {
164      RemoveCustomPropertyIfExists(series, "PointWidth");
165      series.BorderWidth = 1;
166      series.BorderDashStyle = ChartDashStyle.Solid;
167      series.BorderColor = Color.Empty;
168
169      series.Color = row.VisualProperties.Color;
170      series.IsVisibleInLegend = row.VisualProperties.IsVisibleInLegend;
171
172      series.SmartLabelStyle.Enabled = true;
173      series.SmartLabelStyle.AllowOutsidePlotArea = LabelOutsidePlotAreaStyle.No;
174      series.SmartLabelStyle.CalloutLineAnchorCapStyle = LineAnchorCapStyle.None;
175      series.SmartLabelStyle.CalloutLineColor = series.Color;
176      series.SmartLabelStyle.CalloutLineWidth = 2;
177      series.SmartLabelStyle.CalloutStyle = LabelCalloutStyle.Underlined;
178      series.SmartLabelStyle.IsOverlappedHidden = false;
179      series.SmartLabelStyle.MaxMovingDistance = 200;
180
181      switch (row.VisualProperties.ChartType) {
182        case DataRowVisualProperties.DataRowChartType.Line:
183          series.ChartType = SeriesChartType.FastLine;
184          series.BorderWidth = row.VisualProperties.LineWidth;
185          series.BorderDashStyle = ConvertLineStyle(row.VisualProperties.LineStyle);
186          break;
187        case DataRowVisualProperties.DataRowChartType.Bars:
188          // Bar is incompatible with anything but Bar and StackedBar*
189          if (!chart.Series.Any(x => x.ChartType != SeriesChartType.Bar && x.ChartType != SeriesChartType.StackedBar && x.ChartType != SeriesChartType.StackedBar100)) {
190            series.ChartType = SeriesChartType.Bar;
191            chart.ChartAreas[0].AxisX.Interval = 1;
192          } else {
193            series.ChartType = SeriesChartType.FastPoint; //default
194            row.VisualProperties.ChartType = DataRowVisualProperties.DataRowChartType.Points;
195          }
196          break;
197        case DataRowVisualProperties.DataRowChartType.Columns:
198          series.ChartType = SeriesChartType.Column;
199          break;
200        case DataRowVisualProperties.DataRowChartType.Points:
201          series.ChartType = SeriesChartType.FastPoint;
202          break;
203        case DataRowVisualProperties.DataRowChartType.StepLine:
204          series.ChartType = SeriesChartType.StepLine;
205          series.BorderWidth = row.VisualProperties.LineWidth;
206          series.BorderDashStyle = ConvertLineStyle(row.VisualProperties.LineStyle);
207          break;
208        default:
209          series.ChartType = SeriesChartType.FastPoint;
210          break;
211      }
212      series.YAxisType = row.VisualProperties.SecondYAxis ? AxisType.Secondary : AxisType.Primary;
213      series.XAxisType = row.VisualProperties.SecondXAxis ? AxisType.Secondary : AxisType.Primary;
214      if (row.VisualProperties.DisplayName.Trim() != String.Empty) series.LegendText = row.VisualProperties.DisplayName;
215      else series.LegendText = row.Name;
216      series.ToolTip = series.LegendText + " X = #VALX, Y = #VALY";
217    }
218
219    private void ConfigureChartArea(ChartArea area) {
220      if (Content.VisualProperties.TitleFont != null) chart.Titles[0].Font = Content.VisualProperties.TitleFont;
221      if (!Content.VisualProperties.TitleColor.IsEmpty) chart.Titles[0].ForeColor = Content.VisualProperties.TitleColor;
222      chart.Titles[0].Text = Content.VisualProperties.Title;
223      chart.Titles[0].Visible = !string.IsNullOrEmpty(Content.VisualProperties.Title);
224
225      if (Content.VisualProperties.AxisTitleFont != null) area.AxisX.TitleFont = Content.VisualProperties.AxisTitleFont;
226      if (!Content.VisualProperties.AxisTitleColor.IsEmpty) area.AxisX.TitleForeColor = Content.VisualProperties.AxisTitleColor;
227      area.AxisX.Title = Content.VisualProperties.XAxisTitle;
228
229      if (Content.VisualProperties.AxisTitleFont != null) area.AxisX2.TitleFont = Content.VisualProperties.AxisTitleFont;
230      if (!Content.VisualProperties.AxisTitleColor.IsEmpty) area.AxisX2.TitleForeColor = Content.VisualProperties.AxisTitleColor;
231      area.AxisX2.Title = Content.VisualProperties.SecondXAxisTitle;
232
233      if (Content.VisualProperties.AxisTitleFont != null) area.AxisY.TitleFont = Content.VisualProperties.AxisTitleFont;
234      if (!Content.VisualProperties.AxisTitleColor.IsEmpty) area.AxisY.TitleForeColor = Content.VisualProperties.AxisTitleColor;
235      area.AxisY.Title = Content.VisualProperties.YAxisTitle;
236
237      if (Content.VisualProperties.AxisTitleFont != null) area.AxisY2.TitleFont = Content.VisualProperties.AxisTitleFont;
238      if (!Content.VisualProperties.AxisTitleColor.IsEmpty) area.AxisY2.TitleForeColor = Content.VisualProperties.AxisTitleColor;
239      area.AxisY2.Title = Content.VisualProperties.SecondYAxisTitle;
240
241      if (typeof(T).Equals(typeof(DateTime))) {
242        area.AxisX.IntervalType = DateTimeIntervalType.Hours;
243        area.AxisX.LabelStyle.Format = "dd.MM.yyyy HH:mm";
244        area.AxisX.IntervalAutoMode = IntervalAutoMode.VariableCount;
245      }
246    }
247
248    private void RecalculateAxesScale(ChartArea area) {
249      // Reset the axes bounds so that RecalculateAxesScale() will assign new bounds
250      foreach (Axis a in area.Axes) {
251        a.Minimum = double.NaN;
252        a.Maximum = double.NaN;
253      }
254
255      if (chart.Series.Any(x => x.Enabled && x.XAxisType == AxisType.Primary && (x.Points.Count == 0 || x.Points.Any(y => y.XValue <= 0))))
256        area.AxisX.IsLogarithmic = false;
257      else area.AxisX.IsLogarithmic = Content.VisualProperties.XAxisLogScale;
258      if (chart.Series.Any(x => x.Enabled && x.XAxisType == AxisType.Secondary && (x.Points.Count == 0 || x.Points.Any(y => y.XValue <= 0))))
259        area.AxisX2.IsLogarithmic = false;
260      else area.AxisX2.IsLogarithmic = Content.VisualProperties.SecondXAxisLogScale;
261
262      if (chart.Series.Any(x => x.Enabled && x.YAxisType == AxisType.Primary && (x.Points.Count == 0 || x.Points.Any(y => y.YValues.Min() <= 0))))
263        area.AxisY.IsLogarithmic = false;
264      else area.AxisY.IsLogarithmic = Content.VisualProperties.YAxisLogScale;
265      if (chart.Series.Any(x => x.Enabled && x.YAxisType == AxisType.Secondary && (x.Points.Count == 0 || x.Points.Any(y => y.YValues.Min() <= 0))))
266        area.AxisY2.IsLogarithmic = false;
267      else area.AxisY2.IsLogarithmic = Content.VisualProperties.SecondYAxisLogScale;
268
269      area.RecalculateAxesScale();
270      area.AxisX.IsMarginVisible = false;
271      area.AxisX2.IsMarginVisible = false;
272
273      area.AxisX.IsStartedFromZero = Content.Rows.Where(x => !x.VisualProperties.SecondXAxis).Any(x => x.VisualProperties.StartIndexZero);
274      area.AxisX2.IsStartedFromZero = Content.Rows.Where(x => x.VisualProperties.SecondXAxis).Any(x => x.VisualProperties.StartIndexZero);
275
276      if (!Content.VisualProperties.XAxisMinimumAuto && !double.IsNaN(Content.VisualProperties.XAxisMinimumFixedValue)) area.AxisX.Minimum = Content.VisualProperties.XAxisMinimumFixedValue;
277      if (!Content.VisualProperties.XAxisMaximumAuto && !double.IsNaN(Content.VisualProperties.XAxisMaximumFixedValue)) area.AxisX.Maximum = Content.VisualProperties.XAxisMaximumFixedValue;
278      if (!Content.VisualProperties.SecondXAxisMinimumAuto && !double.IsNaN(Content.VisualProperties.SecondXAxisMinimumFixedValue)) area.AxisX2.Minimum = Content.VisualProperties.SecondXAxisMinimumFixedValue;
279      if (!Content.VisualProperties.SecondXAxisMaximumAuto && !double.IsNaN(Content.VisualProperties.SecondXAxisMaximumFixedValue)) area.AxisX2.Maximum = Content.VisualProperties.SecondXAxisMaximumFixedValue;
280      if (!Content.VisualProperties.YAxisMinimumAuto && !double.IsNaN(Content.VisualProperties.YAxisMinimumFixedValue)) area.AxisY.Minimum = Content.VisualProperties.YAxisMinimumFixedValue;
281      if (!Content.VisualProperties.YAxisMaximumAuto && !double.IsNaN(Content.VisualProperties.YAxisMaximumFixedValue)) area.AxisY.Maximum = Content.VisualProperties.YAxisMaximumFixedValue;
282      if (!Content.VisualProperties.SecondYAxisMinimumAuto && !double.IsNaN(Content.VisualProperties.SecondYAxisMinimumFixedValue)) area.AxisY2.Minimum = Content.VisualProperties.SecondYAxisMinimumFixedValue;
283      if (!Content.VisualProperties.SecondYAxisMaximumAuto && !double.IsNaN(Content.VisualProperties.SecondYAxisMaximumFixedValue)) area.AxisY2.Maximum = Content.VisualProperties.SecondYAxisMaximumFixedValue;
284      if (area.AxisX.Minimum >= area.AxisX.Maximum) area.AxisX.Maximum = area.AxisX.Minimum + 1;
285      if (area.AxisX2.Minimum >= area.AxisX2.Maximum) area.AxisX2.Maximum = area.AxisX2.Minimum + 1;
286      if (area.AxisY.Minimum >= area.AxisY.Maximum) area.AxisY.Maximum = area.AxisY.Minimum + 1;
287      if (area.AxisY2.Minimum >= area.AxisY2.Maximum) area.AxisY2.Maximum = area.AxisY2.Minimum + 1;
288    }
289
290    /// <summary>
291    /// Set the Y Cursor interval to visible points of enabled series.
292    /// </summary>
293    protected virtual void UpdateYCursorInterval() {
294      double interestingValuesRange = (
295        from series in chart.Series
296        where series.Enabled
297        let values = (from point in series.Points
298                      where !point.IsEmpty
299                      select point.YValues[0]).DefaultIfEmpty(1.0)
300        let range = values.Max() - values.Min()
301        where range > 0.0
302        select range
303        ).DefaultIfEmpty(1.0).Min();
304
305      double digits = (int)Math.Log10(interestingValuesRange) - 3;
306      double yZoomInterval = Math.Pow(10, digits);
307      this.chart.ChartAreas[0].CursorY.Interval = yZoomInterval;
308    }
309
310
311    /// <summary>
312    /// Remove the corresponding series for a certain DataRow.
313    /// </summary>
314    /// <param name="row">DataRow which series should be removed.</param>
315    protected virtual void RemoveDataRow(IndexedDataRow<T> row) {
316      if (chart.Series.All(x => x.Name != row.Name)) return;
317      Series series = chart.Series[row.Name];
318      chart.Series.Remove(series);
319      if (invisibleSeries.Contains(series))
320        invisibleSeries.Remove(series);
321      RecalculateAxesScale(chart.ChartAreas[0]);
322    }
323
324    #region Event Handlers
325    #region Content Event Handlers
326    private void Content_VisualPropertiesChanged(object sender, EventArgs e) {
327      if (InvokeRequired)
328        Invoke(new EventHandler(Content_VisualPropertiesChanged), sender, e);
329      else {
330        ConfigureChartArea(chart.ChartAreas[0]);
331        RecalculateAxesScale(chart.ChartAreas[0]); // axes min/max could have changed
332      }
333    }
334    #endregion
335    #region Rows Event Handlers
336    private void Rows_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedDataRow<T>> e) {
337      if (InvokeRequired)
338        Invoke(new CollectionItemsChangedEventHandler<IndexedDataRow<T>>(Rows_ItemsAdded), sender, e);
339      else {
340        foreach (var row in e.Items) {
341          AddDataRow(row);
342          RegisterDataRowEvents(row);
343        }
344      }
345    }
346    private void Rows_ItemsRemoved(object sender, CollectionItemsChangedEventArgs<IndexedDataRow<T>> e) {
347      if (InvokeRequired)
348        Invoke(new CollectionItemsChangedEventHandler<IndexedDataRow<T>>(Rows_ItemsRemoved), sender, e);
349      else {
350        foreach (var row in e.Items) {
351          DeregisterDataRowEvents(row);
352          RemoveDataRow(row);
353        }
354      }
355    }
356    private void Rows_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<IndexedDataRow<T>> e) {
357      if (InvokeRequired)
358        Invoke(new CollectionItemsChangedEventHandler<IndexedDataRow<T>>(Rows_ItemsReplaced), sender, e);
359      else {
360        foreach (var row in e.OldItems) {
361          DeregisterDataRowEvents(row);
362          RemoveDataRow(row);
363        }
364        foreach (var row in e.Items) {
365          AddDataRow(row);
366          RegisterDataRowEvents(row);
367        }
368      }
369    }
370    private void Rows_CollectionReset(object sender, CollectionItemsChangedEventArgs<IndexedDataRow<T>> e) {
371      if (InvokeRequired)
372        Invoke(new CollectionItemsChangedEventHandler<IndexedDataRow<T>>(Rows_CollectionReset), sender, e);
373      else {
374        foreach (var row in e.OldItems) {
375          DeregisterDataRowEvents(row);
376          RemoveDataRow(row);
377        }
378        foreach (var row in e.Items) {
379          AddDataRow(row);
380          RegisterDataRowEvents(row);
381        }
382      }
383    }
384    #endregion
385    #region Row Event Handlers
386    private void Row_VisualPropertiesChanged(object sender, EventArgs e) {
387      if (InvokeRequired)
388        Invoke(new EventHandler(Row_VisualPropertiesChanged), sender, e);
389      else {
390        var row = (IndexedDataRow<T>)sender;
391        Series series = chart.Series[row.Name];
392        series.Points.Clear();
393        ConfigureSeries(series, row);
394        FillSeriesWithRowValues(series, row);
395        RecalculateAxesScale(chart.ChartAreas[0]);
396      }
397    }
398    private void Row_NameChanged(object sender, EventArgs e) {
399      if (InvokeRequired)
400        Invoke(new EventHandler(Row_NameChanged), sender, e);
401      else {
402        var row = (IndexedDataRow<T>)sender;
403        chart.Series[row.Name].Name = row.Name;
404      }
405    }
406    #endregion
407    #region Values Event Handlers
408    private void Values_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<Tuple<T, double>>> e) {
409      if (InvokeRequired)
410        Invoke(new CollectionItemsChangedEventHandler<IndexedItem<Tuple<T, double>>>(Values_ItemsAdded), sender, e);
411      else {
412        IndexedDataRow<T> row = null;
413        valuesRowsTable.TryGetValue((IObservableList<Tuple<T, double>>)sender, out row);
414        if (row != null) {
415          Series rowSeries = chart.Series[row.Name];
416          if (!invisibleSeries.Contains(rowSeries)) {
417            rowSeries.Points.Clear();
418            FillSeriesWithRowValues(rowSeries, row);
419            RecalculateAxesScale(chart.ChartAreas[0]);
420            UpdateYCursorInterval();
421          }
422        } else AddDataRow((IndexedDataRow<T>)sender);
423      }
424    }
425    private void Values_ItemsRemoved(object sender, CollectionItemsChangedEventArgs<IndexedItem<Tuple<T, double>>> e) {
426      if (InvokeRequired)
427        Invoke(new CollectionItemsChangedEventHandler<IndexedItem<Tuple<T, double>>>(Values_ItemsRemoved), sender, e);
428      else {
429        IndexedDataRow<T> row = null;
430        valuesRowsTable.TryGetValue((IObservableList<Tuple<T, double>>)sender, out row);
431        if (row != null) {
432          if (row.Values.Count == 0) {
433            RemoveDataRow(row);
434          } else {
435            Series rowSeries = chart.Series[row.Name];
436            if (!invisibleSeries.Contains(rowSeries)) {
437              rowSeries.Points.Clear();
438              FillSeriesWithRowValues(rowSeries, row);
439              RecalculateAxesScale(chart.ChartAreas[0]);
440              UpdateYCursorInterval();
441            }
442          }
443        }
444      }
445    }
446    private void Values_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<IndexedItem<Tuple<T, double>>> e) {
447      if (InvokeRequired)
448        Invoke(new CollectionItemsChangedEventHandler<IndexedItem<Tuple<T, double>>>(Values_ItemsReplaced), sender, e);
449      else {
450        IndexedDataRow<T> row = null;
451        valuesRowsTable.TryGetValue((IObservableList<Tuple<T, double>>)sender, out row);
452        if (row != null) {
453          if (row.Values.Count == 0) {
454            RemoveDataRow(row);
455          } else {
456            Series rowSeries = chart.Series[row.Name];
457            if (!invisibleSeries.Contains(rowSeries)) {
458              if (row.VisualProperties.ChartType == DataRowVisualProperties.DataRowChartType.Histogram) {
459                rowSeries.Points.Clear();
460                FillSeriesWithRowValues(rowSeries, row);
461              } else {
462                foreach (IndexedItem<Tuple<T, double>> item in e.Items) {
463                  rowSeries.Points[item.Index].SetValueXY(item.Value.Item1, item.Value.Item2);
464                }
465              }
466              RecalculateAxesScale(chart.ChartAreas[0]);
467              UpdateYCursorInterval();
468            }
469          }
470        }
471      }
472    }
473    private void Values_ItemsMoved(object sender, CollectionItemsChangedEventArgs<IndexedItem<Tuple<T, double>>> e) {
474      if (InvokeRequired)
475        Invoke(new CollectionItemsChangedEventHandler<IndexedItem<Tuple<T, double>>>(Values_ItemsMoved), sender, e);
476      else {
477        IndexedDataRow<T> row = null;
478        valuesRowsTable.TryGetValue((IObservableList<Tuple<T, double>>)sender, out row);
479        if (row != null) {
480          Series rowSeries = chart.Series[row.Name];
481          if (!invisibleSeries.Contains(rowSeries)) {
482            rowSeries.Points.Clear();
483            FillSeriesWithRowValues(rowSeries, row);
484            RecalculateAxesScale(chart.ChartAreas[0]);
485            UpdateYCursorInterval();
486          }
487        }
488      }
489    }
490
491    private void Values_CollectionReset(object sender, CollectionItemsChangedEventArgs<IndexedItem<Tuple<T, double>>> e) {
492      if (InvokeRequired)
493        Invoke(new CollectionItemsChangedEventHandler<IndexedItem<Tuple<T, double>>>(Values_CollectionReset), sender, e);
494      else {
495        IndexedDataRow<T> row = null;
496        valuesRowsTable.TryGetValue((IObservableList<Tuple<T, double>>)sender, out row);
497        if (row != null) {
498          if (row.Values.Count == 0) {
499            RemoveDataRow(row);
500          } else {
501            Series rowSeries = chart.Series[row.Name];
502            if (!invisibleSeries.Contains(rowSeries)) {
503              rowSeries.Points.Clear();
504              FillSeriesWithRowValues(rowSeries, row);
505              RecalculateAxesScale(chart.ChartAreas[0]);
506              UpdateYCursorInterval();
507            }
508          }
509        }
510      }
511    }
512    #endregion
513    private void configureToolStripMenuItem_Click(object sender, EventArgs e) {
514      ShowConfiguration();
515    }
516    #endregion
517
518    #region Chart Event Handlers
519    private void chart_MouseDown(object sender, MouseEventArgs e) {
520      HitTestResult result = chart.HitTest(e.X, e.Y);
521      if (result.ChartElementType == ChartElementType.LegendItem) {
522        ToggleSeriesVisible(result.Series);
523      }
524    }
525    private void chart_MouseMove(object sender, MouseEventArgs e) {
526      HitTestResult result = chart.HitTest(e.X, e.Y);
527      if (result.ChartElementType == ChartElementType.LegendItem)
528        this.Cursor = Cursors.Hand;
529      else
530        this.Cursor = Cursors.Default;
531    }
532    private void chart_CustomizeLegend(object sender, CustomizeLegendEventArgs e) {
533      foreach (LegendItem legendItem in e.LegendItems) {
534        var series = chart.Series[legendItem.SeriesName];
535        if (series != null) {
536          bool seriesIsInvisible = invisibleSeries.Contains(series);
537          foreach (LegendCell cell in legendItem.Cells) {
538            cell.ForeColor = seriesIsInvisible ? Color.Gray : Color.Black;
539          }
540        }
541      }
542    }
543    #endregion
544
545    private void ToggleSeriesVisible(Series series) {
546      if (!invisibleSeries.Contains(series)) {
547        series.Points.Clear();
548        invisibleSeries.Add(series);
549      } else {
550        invisibleSeries.Remove(series);
551        if (Content != null) {
552
553          var row = (from r in Content.Rows
554                     where r.Name == series.Name
555                     select r).Single();
556          FillSeriesWithRowValues(series, row);
557          this.chart.Legends[series.Legend].ForeColor = Color.Black;
558          RecalculateAxesScale(chart.ChartAreas[0]);
559          UpdateYCursorInterval();
560        }
561      }
562    }
563
564    private void FillSeriesWithRowValues(Series series, IndexedDataRow<T> row) {
565      for (int i = 0; i < row.Values.Count; i++) {
566        var value = row.Values[i];
567        if (IsInvalidValue(value.Item2)) continue;
568        var point = new DataPoint();
569        point.SetValueXY(value.Item1, value.Item2);
570        if (i == row.Values.Count - 1) {
571          point.Label = series.Name;
572          point.MarkerStyle = MarkerStyle.Cross;
573          point.MarkerSize = 15;
574          point.MarkerBorderWidth = 1;
575        }
576        series.Points.Add(point);
577      }
578    }
579
580    #region Helpers
581    protected void RemoveCustomPropertyIfExists(Series series, string property) {
582      if (series.IsCustomPropertySet(property)) series.DeleteCustomProperty(property);
583    }
584
585    private ChartDashStyle ConvertLineStyle(DataRowVisualProperties.DataRowLineStyle dataRowLineStyle) {
586      switch (dataRowLineStyle) {
587        case DataRowVisualProperties.DataRowLineStyle.Dash:
588          return ChartDashStyle.Dash;
589        case DataRowVisualProperties.DataRowLineStyle.DashDot:
590          return ChartDashStyle.DashDot;
591        case DataRowVisualProperties.DataRowLineStyle.DashDotDot:
592          return ChartDashStyle.DashDotDot;
593        case DataRowVisualProperties.DataRowLineStyle.Dot:
594          return ChartDashStyle.Dot;
595        case DataRowVisualProperties.DataRowLineStyle.NotSet:
596          return ChartDashStyle.NotSet;
597        case DataRowVisualProperties.DataRowLineStyle.Solid:
598          return ChartDashStyle.Solid;
599        default:
600          return ChartDashStyle.NotSet;
601      }
602    }
603
604    /// <summary>
605    /// Determines whether a double value can be displayed (converted to Decimal and not an NaN).
606    /// </summary>
607    /// <param name="x">The number to check.</param>
608    /// <returns><code>true</code> if the value can be safely shwon in the chart,
609    /// <code>false</code> otherwise.</returns>
610    protected static bool IsInvalidValue(double x) {
611      return double.IsNaN(x) || x < (double)decimal.MinValue || x > (double)decimal.MaxValue;
612    }
613    #endregion
614  }
615}
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