[8409] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[15583] | 3 | * Copyright (C) 2002-2018 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[8409] | 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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[8980] | 30 | public partial class ConstantNodeEditDialog : Form {
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| 31 | private ConstantTreeNode constantTreeNode;
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| 32 | public ConstantTreeNode NewNode {
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| 33 | get { return constantTreeNode; }
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[8409] | 34 | set {
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| 35 | if (InvokeRequired)
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[8980] | 36 | Invoke(new Action<SymbolicExpressionTreeNode>(x => constantTreeNode = (ConstantTreeNode)x), value);
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[8409] | 37 | else
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[8980] | 38 | constantTreeNode = value;
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[8409] | 39 | }
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| 40 | }
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| 41 |
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[8980] | 42 | public ConstantNodeEditDialog(ISymbolicExpressionTreeNode node) {
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[8409] | 43 | InitializeComponent();
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| 44 | oldValueTextBox.TabStop = false; // cannot receive focus using tab key
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[8980] | 45 | NewNode = (ConstantTreeNode)node;
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| 46 | InitializeFields();
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[8409] | 47 | }
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| 48 |
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[8980] | 49 | private void InitializeFields() {
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| 50 | if (NewNode == null)
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| 51 | throw new ArgumentException("Node is not a constant.");
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| 52 | else {
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| 53 | this.Text = "Edit constant";
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| 54 | newValueTextBox.Text = oldValueTextBox.Text = Math.Round(constantTreeNode.Value, 4).ToString();
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[8409] | 55 | }
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| 56 | }
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| 57 |
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| 58 | #region text box validation and events
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| 59 | private void newValueTextBox_Validating(object sender, CancelEventArgs e) {
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| 60 | string errorMessage;
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| 61 | if (!ValidateNewValue(newValueTextBox.Text, out errorMessage)) {
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| 62 | e.Cancel = true;
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| 63 | errorProvider.SetError(newValueTextBox, errorMessage);
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| 64 | newValueTextBox.SelectAll();
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| 65 | }
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| 66 | }
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| 67 |
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| 68 | private void newValueTextBox_Validated(object sender, EventArgs e) {
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| 69 | errorProvider.SetError(newValueTextBox, string.Empty);
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| 70 | }
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| 71 |
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| 72 | private static bool ValidateNewValue(string value, out string errorMessage) {
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| 73 | double val;
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| 74 | bool valid = double.TryParse(value, out val);
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| 75 | errorMessage = string.Empty;
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| 76 | if (!valid) {
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| 77 | var sb = new StringBuilder();
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| 78 | sb.Append("Invalid Value (Valid Value Format: \"");
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| 79 | sb.Append(FormatPatterns.GetDoubleFormatPattern());
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| 80 | sb.Append("\")");
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| 81 | errorMessage = sb.ToString();
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| 82 | }
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| 83 | return valid;
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| 84 | }
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| 85 | #endregion
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| 86 |
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| 87 | // proxy handler passing key strokes to the parent control
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| 88 | private void childControl_KeyDown(object sender, KeyEventArgs e) {
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[8980] | 89 | ConstantNodeEditDialog_KeyDown(sender, e);
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[8409] | 90 | }
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| 91 |
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[8980] | 92 | private void ConstantNodeEditDialog_KeyDown(object sender, KeyEventArgs e) {
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[8409] | 93 | if ((e.KeyCode == Keys.Enter) || (e.KeyCode == Keys.Return)) {
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| 94 | if (!ValidateChildren()) return;
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[8935] | 95 | OnDialogValidated(this, e); // emit validated effect
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[8409] | 96 | Close();
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| 97 | }
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| 98 | }
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| 99 |
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| 100 | public event EventHandler DialogValidated;
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[8935] | 101 | private void OnDialogValidated(object sender, EventArgs e) {
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[8980] | 102 | if (constantTreeNode == null) return;
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| 103 | var value = double.Parse(newValueTextBox.Text);
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| 104 | // we impose an extra validation condition: that the new value is different from the original value
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| 105 | if (constantTreeNode.Value.Equals(value)) return;
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| 106 |
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| 107 | constantTreeNode.Value = value;
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| 108 | DialogResult = DialogResult.OK;
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[8935] | 109 | var dialogValidated = DialogValidated;
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| 110 | if (dialogValidated != null)
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| 111 | dialogValidated(sender, e);
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| 112 | }
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| 113 |
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| 114 | private void cancelButton_Click(object sender, EventArgs e) {
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| 115 | Close();
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| 116 | }
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| 117 |
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| 118 | private void okButton_Click(object sender, EventArgs e) {
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| 119 | if (ValidateChildren()) {
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| 120 | OnDialogValidated(this, e);
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| 121 | Close();
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| 122 | }
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| 123 | }
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[8409] | 124 | }
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| 125 | }
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