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.Windows.Forms;
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24 |
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25 | namespace HeuristicLab.MainForm.WindowsForms {
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26 | public partial class ProgressView : HeuristicLab.MainForm.WindowsForms.View {
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27 | private ContentView parentView;
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28 |
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29 | private IProgress progress;
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30 | public IProgress Progress {
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31 | get { return progress; }
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32 | set {
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33 | if (progress == value) return;
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34 | Finish();
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35 | progress = value;
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36 | RegisterProgressEvents();
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37 | ShowProgress();
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38 | OnProgressChanged();
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39 | }
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40 | }
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41 |
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42 | private bool cancelEnabled;
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43 | public bool CancelEnabled {
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44 | get { return cancelEnabled; }
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45 | set {
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46 | cancelEnabled = value;
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47 | SetCancelButtonVisibility();
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48 | }
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49 | }
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50 |
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51 | private void ShowProgress() {
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52 | if (progress != null) {
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53 | this.Left = (parentView.ClientRectangle.Width / 2) - (this.Width / 2);
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54 | this.Top = (parentView.ClientRectangle.Height / 2) - (this.Height / 2);
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55 | this.Anchor = AnchorStyles.Left | AnchorStyles.Top;
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56 |
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57 | LockBackground();
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58 |
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59 | if (!parentView.Controls.Contains(this)) {
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60 | parentView.Controls.Add(this);
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61 | }
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62 |
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63 | BringToFront();
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64 | Visible = true;
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65 | }
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66 | }
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67 |
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68 | public ProgressView(ContentView parentView) {
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69 | InitializeComponent();
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70 | CancelEnabled = false;
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71 |
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72 | if (parentView != null) {
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73 | this.parentView = parentView;
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74 | } else {
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75 | throw new ArgumentNullException("The parent view is null.");
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76 | }
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77 | }
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78 |
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79 | private void RegisterProgressEvents() {
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80 | if (progress == null) return;
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81 | progress.Finished += new EventHandler(progress_Finished);
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82 | progress.StatusChanged += new EventHandler(progress_StatusChanged);
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83 | progress.ProgressValueChanged += new EventHandler(progress_ProgressValueChanged);
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84 | progress.Canceled += new EventHandler(progress_Canceled);
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85 | }
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86 |
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87 | private void DeregisterProgressEvents() {
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88 | if (progress == null) return;
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89 | progress.Finished -= new EventHandler(progress_Finished);
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90 | progress.StatusChanged -= new EventHandler(progress_StatusChanged);
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91 | progress.ProgressValueChanged -= new EventHandler(progress_ProgressValueChanged);
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92 | progress.Canceled -= new EventHandler(progress_Canceled);
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93 | }
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94 |
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95 | private void progress_Finished(object sender, EventArgs e) {
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96 | Finish();
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97 | }
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98 |
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99 | private void progress_StatusChanged(object sender, EventArgs e) {
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100 | UpdateProgressStatus();
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101 | }
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102 |
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103 | private void progress_ProgressValueChanged(object sender, EventArgs e) {
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104 | UpdateProgressValue();
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105 | }
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106 |
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107 | void progress_Canceled(object sender, EventArgs e) {
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108 | Finish();
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109 | }
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110 |
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111 | private void LockBackground() {
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112 | if (InvokeRequired) {
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113 | Invoke((Action)LockBackground);
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114 | } else {
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115 | parentView.Locked = true;
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116 | parentView.ReadOnly = true;
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117 | foreach (Control c in this.parentView.Controls)
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118 | c.Enabled = false;
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119 | Enabled = true;
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120 | ReadOnly = false;
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121 | }
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122 | }
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123 |
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124 | private void UpdateProgressValue() {
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125 | if (InvokeRequired) Invoke((Action)UpdateProgressValue);
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126 | else {
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127 | if (progress != null) {
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128 | double progressValue = progress.ProgressValue;
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129 | if (progressValue < progressBar.Minimum || progressValue > progressBar.Maximum) {
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130 | progressBar.Style = ProgressBarStyle.Marquee;
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131 | progressBar.Value = progressBar.Minimum;
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132 | } else {
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133 | progressBar.Style = ProgressBarStyle.Blocks;
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134 | progressBar.Value = (int)Math.Round(progressBar.Minimum + progressValue * (progressBar.Maximum - progressBar.Minimum));
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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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140 | private void UpdateProgressStatus() {
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141 | if (InvokeRequired) Invoke((Action)UpdateProgressStatus);
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142 | else {
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143 | if (progress != null) {
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144 | string status = progress.Status;
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145 | statusLabel.Text = progress.Status;
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146 | }
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147 | }
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148 | }
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149 |
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150 | private void Finish() {
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151 | if (InvokeRequired) {
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152 | Invoke(new Action(Finish));
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153 | } else {
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154 | progressBar.Value = progressBar.Maximum;
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155 | parentView.Controls.Remove(this);
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156 | parentView.Locked = false;
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157 | parentView.ReadOnly = false;
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158 | foreach (Control c in this.parentView.Controls)
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159 | c.Enabled = true;
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160 | DeregisterProgressEvents();
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161 | progress = null;
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162 | this.Visible = false;
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163 | }
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164 | }
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165 |
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166 | private void cancelButton_Click(object sender, EventArgs e) {
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167 | if (progress != null) {
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168 | progress.CancelRequested = true;
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169 | cancelButton.Enabled = false;
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170 | }
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171 | }
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172 |
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173 | private void SetCancelButtonVisibility() {
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174 | if (InvokeRequired) {
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175 | Invoke((Action)SetCancelButtonVisibility);
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176 | } else {
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177 | cancelButton.Visible = cancelEnabled;
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178 | }
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179 | }
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180 |
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181 | private void OnProgressChanged() {
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182 | UpdateProgressStatus();
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183 | UpdateProgressValue();
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184 | }
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185 | }
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186 | }
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