1 | using System;
|
---|
2 | using System.Collections.Generic;
|
---|
3 | using System.Xml;
|
---|
4 |
|
---|
5 | namespace HeuristicLab.Visualization {
|
---|
6 | public class AvgAggregator : DataRowBase {
|
---|
7 | #region IAggregator Members
|
---|
8 |
|
---|
9 | public void AddWatch(IDataRow dataRow) {
|
---|
10 | dataRowWatches.Add(dataRow);
|
---|
11 | dataRow.ValueChanged += dataRow_ValueChanged;
|
---|
12 | dataRow.ValuesChanged += dataRow_ValuesChanged;
|
---|
13 | dataRow.DataRowChanged += dataRow_DataRowChanged;
|
---|
14 | }
|
---|
15 |
|
---|
16 | public void RemoveWatch(IDataRow dataRow) {
|
---|
17 | dataRowWatches.Remove(dataRow);
|
---|
18 | dataRow.DataRowChanged -= dataRow_DataRowChanged;
|
---|
19 | dataRow.ValuesChanged -= dataRow_ValuesChanged;
|
---|
20 | dataRow.ValueChanged -= dataRow_ValueChanged;
|
---|
21 | }
|
---|
22 |
|
---|
23 | #endregion
|
---|
24 |
|
---|
25 | private readonly List<IDataRow> dataRowWatches = new List<IDataRow>();
|
---|
26 | private double curAvgValue;
|
---|
27 |
|
---|
28 | private void dataRow_ValueChanged(IDataRow row, double value, int index, Action action) {
|
---|
29 | switch (action) {
|
---|
30 | case Action.Added:
|
---|
31 | refreshValue(value, action);
|
---|
32 | break;
|
---|
33 | case Action.Modified:
|
---|
34 | refreshValue();
|
---|
35 | break;
|
---|
36 | case Action.Deleted:
|
---|
37 | refreshValue(value, action);
|
---|
38 | break;
|
---|
39 | default:
|
---|
40 | throw new ArgumentOutOfRangeException("action");
|
---|
41 | }
|
---|
42 |
|
---|
43 |
|
---|
44 | }
|
---|
45 |
|
---|
46 | private void dataRow_ValuesChanged(IDataRow row, double[] values, int index, Action action) {
|
---|
47 | for (int i = 0; i < values.Length; i++) {
|
---|
48 | refreshValue();
|
---|
49 | }
|
---|
50 | }
|
---|
51 |
|
---|
52 | private void dataRow_DataRowChanged(IDataRow row) {
|
---|
53 | refreshValue();
|
---|
54 | }
|
---|
55 |
|
---|
56 | private int count;
|
---|
57 |
|
---|
58 | public AvgAggregator() {
|
---|
59 | curAvgValue = 0;
|
---|
60 | count = 0;
|
---|
61 | }
|
---|
62 |
|
---|
63 | private void refreshValue() {
|
---|
64 | curAvgValue = double.MinValue;
|
---|
65 | double tmpSum = 0;
|
---|
66 | count = 0;
|
---|
67 | foreach (IDataRow rows in dataRowWatches) {
|
---|
68 | for (int i = 0; i < rows.Count; i++) {
|
---|
69 | tmpSum += rows[i];
|
---|
70 | count++;
|
---|
71 | }
|
---|
72 | }
|
---|
73 | if (count == 0) curAvgValue = 0;
|
---|
74 | else curAvgValue = tmpSum / count;
|
---|
75 | OnValueChanged(curAvgValue, 0, Action.Modified);
|
---|
76 | }
|
---|
77 | private void refreshValue(double newVal, Action action) {
|
---|
78 | double temp = curAvgValue * count;
|
---|
79 |
|
---|
80 | switch (action) {
|
---|
81 | case Action.Added:
|
---|
82 | temp += newVal;
|
---|
83 | count++;
|
---|
84 | break;
|
---|
85 | case Action.Modified:
|
---|
86 | throw new InvalidOperationException();
|
---|
87 | case Action.Deleted:
|
---|
88 | temp -= newVal;
|
---|
89 | count--;
|
---|
90 | break;
|
---|
91 | default:
|
---|
92 | throw new ArgumentOutOfRangeException("action");
|
---|
93 | }
|
---|
94 |
|
---|
95 | curAvgValue = temp / count;
|
---|
96 | OnValueChanged(curAvgValue, 0, Action.Modified);
|
---|
97 | }
|
---|
98 |
|
---|
99 | #region IDataRow Members
|
---|
100 |
|
---|
101 | public override void AddValue(double value) {
|
---|
102 | throw new NotSupportedException();
|
---|
103 | }
|
---|
104 |
|
---|
105 | public override void AddValue(double value, int index) {
|
---|
106 | throw new NotSupportedException();
|
---|
107 | }
|
---|
108 |
|
---|
109 | public override void AddValues(double[] values) {
|
---|
110 | throw new NotSupportedException();
|
---|
111 | }
|
---|
112 |
|
---|
113 | public override void AddValues(double[] values, int index) {
|
---|
114 | throw new NotSupportedException();
|
---|
115 | }
|
---|
116 |
|
---|
117 | public override void ModifyValue(double value, int index) {
|
---|
118 | throw new NotSupportedException();
|
---|
119 | }
|
---|
120 |
|
---|
121 | public override void ModifyValues(double[] values, int index) {
|
---|
122 | throw new NotSupportedException();
|
---|
123 | }
|
---|
124 |
|
---|
125 | public override void RemoveValue(int index) {
|
---|
126 | throw new NotSupportedException();
|
---|
127 | }
|
---|
128 |
|
---|
129 | public override void RemoveValues(int index, int countVals) {
|
---|
130 | throw new NotSupportedException();
|
---|
131 | }
|
---|
132 |
|
---|
133 | public override int Count {
|
---|
134 | get { return 1; }
|
---|
135 | }
|
---|
136 |
|
---|
137 | public override double this[int index] {
|
---|
138 | get { return curAvgValue; }
|
---|
139 | set { throw new NotSupportedException(); }
|
---|
140 | }
|
---|
141 |
|
---|
142 | public override double MinValue {
|
---|
143 | get { return curAvgValue; }
|
---|
144 | }
|
---|
145 |
|
---|
146 | public override double MaxValue {
|
---|
147 | get { return curAvgValue; }
|
---|
148 | }
|
---|
149 |
|
---|
150 | public override XmlNode ToXml(IDataRow row, XmlDocument document)
|
---|
151 | {
|
---|
152 | throw new System.NotImplementedException();
|
---|
153 | }
|
---|
154 |
|
---|
155 | public override IDataRow FromXml(XmlNode xmlNode)
|
---|
156 | {
|
---|
157 | throw new System.NotImplementedException();
|
---|
158 | }
|
---|
159 |
|
---|
160 | #endregion
|
---|
161 | }
|
---|
162 | } |
---|