1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2012 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.ComponentModel;
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24 | using System.Text;
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25 | using System.Windows.Forms;
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26 | using HeuristicLab.Data;
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27 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
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28 |
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29 | namespace HeuristicLab.Problems.DataAnalysis.Symbolic.Views {
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30 | public partial class ValueChangeDialog : Form {
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31 | private ISymbolicExpressionTreeNode content;
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32 | public ISymbolicExpressionTreeNode Content {
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33 | get { return content; }
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34 | set {
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35 | if (InvokeRequired)
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36 | Invoke(new Action<SymbolicExpressionTreeNode>(x => content = x), value);
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37 | else
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38 | content = value;
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39 | }
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40 | }
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41 |
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42 | public ValueChangeDialog() {
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43 | InitializeComponent();
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44 | oldValueTextBox.TabStop = false; // cannot receive focus using tab key
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45 | }
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46 |
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47 | public void SetContent(ISymbolicExpressionTreeNode content) {
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48 | Content = content;
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49 | if (Content is VariableTreeNode) {
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50 | this.Text = "Change variable name or weight";
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51 | var variable = Content as VariableTreeNode;
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52 | newValueTextBox.Text = oldValueTextBox.Text = Math.Round(variable.Weight, 4).ToString();
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53 | // add a dropbox containing all the available variable names
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54 | variableNameLabel.Visible = true;
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55 | variableNamesCombo.Visible = true;
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56 | foreach (var name in variable.Symbol.VariableNames) variableNamesCombo.Items.Add(name);
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57 | variableNamesCombo.SelectedIndex = variableNamesCombo.Items.IndexOf(variable.VariableName);
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58 | } else if (Content is ConstantTreeNode) {
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59 | this.Text = "Change constant value";
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60 | var constant = Content as ConstantTreeNode;
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61 | newValueTextBox.Text = oldValueTextBox.Text = Math.Round(constant.Value, 4).ToString();
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62 | }
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63 | }
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64 |
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65 | #region text box validation and events
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66 | private void newValueTextBox_Validating(object sender, CancelEventArgs e) {
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67 | string errorMessage;
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68 | if (!ValidateNewValue(newValueTextBox.Text, out errorMessage)) {
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69 | e.Cancel = true;
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70 | errorProvider.SetError(newValueTextBox, errorMessage);
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71 | newValueTextBox.SelectAll();
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72 | }
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73 | }
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74 |
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75 | private void newValueTextBox_Validated(object sender, EventArgs e) {
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76 | errorProvider.SetError(newValueTextBox, string.Empty);
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77 | }
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78 |
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79 | private static bool ValidateNewValue(string value, out string errorMessage) {
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80 | double val;
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81 | bool valid = double.TryParse(value, out val);
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82 | errorMessage = string.Empty;
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83 | if (!valid) {
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84 | var sb = new StringBuilder();
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85 | sb.Append("Invalid Value (Valid Value Format: \"");
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86 | sb.Append(FormatPatterns.GetDoubleFormatPattern());
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87 | sb.Append("\")");
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88 | errorMessage = sb.ToString();
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89 | }
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90 | return valid;
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91 | }
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92 | #endregion
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93 |
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94 | #region combo box validation and events
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95 | private void variableNamesCombo_Validating(object sender, CancelEventArgs e) {
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96 | if (!(Content is VariableTreeNode)) return;
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97 | if (variableNamesCombo.Items.Contains(variableNamesCombo.SelectedItem)) return;
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98 | e.Cancel = true;
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99 | errorProvider.SetError(variableNamesCombo, "Invalid variable name");
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100 | variableNamesCombo.SelectAll();
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101 | }
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102 |
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103 | private void variableNamesCombo_Validated(object sender, EventArgs e) {
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104 | errorProvider.SetError(variableNamesCombo, String.Empty);
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105 | }
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106 | #endregion
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107 | // proxy handler passing key strokes to the parent control
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108 | private void childControl_KeyDown(object sender, KeyEventArgs e) {
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109 | ValueChangeDialog_KeyDown(sender, e);
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110 | }
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111 |
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112 | private void ValueChangeDialog_KeyDown(object sender, KeyEventArgs e) {
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113 | if ((e.KeyCode == Keys.Enter) || (e.KeyCode == Keys.Return)) {
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114 | if (!ValidateChildren()) return;
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115 | OnDialogValidated(this, e); // emit validated effect
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116 | Close();
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117 | }
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118 | }
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119 |
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120 | public event EventHandler DialogValidated;
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121 | private void OnDialogValidated(object sender, EventArgs e) {
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122 | var dialogValidated = DialogValidated;
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123 | if (dialogValidated != null)
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124 | dialogValidated(sender, e);
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125 | }
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126 |
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127 | private void cancelButton_Click(object sender, EventArgs e) {
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128 | Close();
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129 | }
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130 |
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131 | private void okButton_Click(object sender, EventArgs e) {
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132 | if (ValidateChildren()) {
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133 | OnDialogValidated(this, e);
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134 | Close();
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135 | }
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136 | }
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137 |
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138 | }
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139 | }
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