1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2013 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.Windows.Forms;
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25 |
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26 | namespace HeuristicLab.MainForm.WindowsForms {
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27 | [View("ProgressView")]
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28 | [Content(typeof(IProgress), true)]
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29 | public partial class ProgressView : AsynchronousContentView {
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30 | private const int DefaultCancelTimeoutMs = 3000;
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31 | private readonly IView view;
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32 |
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33 | [Category("Custom"), Description("The time that the process is allowed to exit.")]
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34 | [DefaultValue(DefaultCancelTimeoutMs)]
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35 | public int CancelTimeoutMs { get; set; }
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36 | private bool ShouldSerializeCancelTimeoutMs() { return CancelTimeoutMs != DefaultCancelTimeoutMs; }
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37 |
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38 | public new IProgress Content {
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39 | get { return (IProgress)base.Content; }
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40 | set { base.Content = value; }
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41 | }
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42 |
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43 | private Control Control {
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44 | get { return (Control)view; }
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45 | }
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46 |
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47 | public bool DisposeOnFinish { get; set; }
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48 |
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49 | public ProgressView() {
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50 | InitializeComponent();
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51 | }
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52 |
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53 | public ProgressView(IView view)
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54 | : this() {
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55 | if (view == null) throw new ArgumentNullException("view", "The view is null.");
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56 | if (!(view is Control)) throw new ArgumentException("The view is not a control.", "view");
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57 | this.view = view;
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58 | }
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59 | public ProgressView(IView view, IProgress progress)
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60 | : this(view) {
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61 | Content = progress;
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62 | }
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63 |
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64 | public static ProgressView Attach(IView view, IProgress progress, bool disposeOnFinish = false) {
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65 | return new ProgressView(view, progress) {
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66 | DisposeOnFinish = disposeOnFinish
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67 | };
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68 | }
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69 |
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70 | protected override void RegisterContentEvents() {
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71 | Content.StatusChanged += new EventHandler(progress_StatusChanged);
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72 | Content.ProgressValueChanged += new EventHandler(progress_ProgressValueChanged);
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73 | Content.ProgressStateChanged += new EventHandler(Content_ProgressStateChanged);
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74 | Content.CanBeCanceledChanged += new EventHandler(Content_CanBeCanceledChanged);
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75 | base.RegisterContentEvents();
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76 | }
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77 |
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78 | protected override void DeregisterContentEvents() {
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79 | base.DeregisterContentEvents();
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80 | Content.StatusChanged -= new EventHandler(progress_StatusChanged);
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81 | Content.ProgressValueChanged -= new EventHandler(progress_ProgressValueChanged);
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82 | Content.ProgressStateChanged -= new EventHandler(Content_ProgressStateChanged);
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83 | Content.CanBeCanceledChanged -= new EventHandler(Content_CanBeCanceledChanged);
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84 | }
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85 |
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86 | protected override void OnContentChanged() {
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87 | base.OnContentChanged();
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88 | if (Content == null) {
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89 | HideProgress();
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90 | } else {
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91 | if (Content.ProgressState == ProgressState.Started)
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92 | ShowProgress();
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93 | }
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94 | }
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95 |
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96 | protected override void SetEnabledStateOfControls() {
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97 | base.SetEnabledStateOfControls();
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98 | cancelButton.Visible = Content != null && Content.CanBeCanceled;
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99 | cancelButton.Enabled = Content != null && Content.CanBeCanceled && !ReadOnly;
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100 | }
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101 |
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102 | private void ShowProgress() {
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103 | if (InvokeRequired) Invoke((Action)ShowProgress);
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104 | else {
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105 | if (view != null) {
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106 | Left = (Control.ClientRectangle.Width / 2) - (Width / 2);
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107 | Top = (Control.ClientRectangle.Height / 2) - (Height / 2);
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108 | Anchor = AnchorStyles.None;
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109 |
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110 | LockBackground();
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111 | Parent = Control.Parent;
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112 | BringToFront();
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113 | }
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114 | UpdateProgressValue();
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115 | UpdateProgressStatus();
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116 | Visible = true;
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117 | }
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118 | }
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119 |
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120 | private void HideProgress() {
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121 | if (InvokeRequired) Invoke((Action)HideProgress);
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122 | else {
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123 | if (view != null) {
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124 | Parent = null;
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125 | UnlockBackground();
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126 | }
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127 | Visible = false;
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128 | }
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129 | }
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130 |
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131 | private void progress_StatusChanged(object sender, EventArgs e) {
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132 | UpdateProgressStatus();
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133 | }
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134 |
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135 | private void progress_ProgressValueChanged(object sender, EventArgs e) {
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136 | UpdateProgressValue();
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137 | }
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138 |
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139 | private void Content_ProgressStateChanged(object sender, EventArgs e) {
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140 | switch (Content.ProgressState) {
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141 | case ProgressState.Finished:
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142 | HideProgress();
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143 | if (DisposeOnFinish) {
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144 | Content = null;
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145 | Dispose();
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146 | }
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147 | break;
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148 | case ProgressState.Canceled: HideProgress(); break;
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149 | case ProgressState.Started: ShowProgress(); break;
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150 | }
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151 | }
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152 |
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153 | private void Content_CanBeCanceledChanged(object sender, EventArgs e) {
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154 | SetEnabledStateOfControls();
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155 | }
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156 |
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157 | private void LockBackground() {
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158 | if (InvokeRequired) Invoke((Action)LockBackground);
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159 | else {
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160 | view.Enabled = false;
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161 | }
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162 | }
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163 |
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164 | private void UnlockBackground() {
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165 | if (InvokeRequired) Invoke((Action)UnlockBackground);
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166 | else {
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167 | view.Enabled = true;
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168 | }
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169 | }
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170 |
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171 | private void UpdateProgressValue() {
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172 | if (InvokeRequired) Invoke((Action)UpdateProgressValue);
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173 | else {
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174 | if (Content != null) {
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175 | double progressValue = Content.ProgressValue;
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176 | if (progressValue <= 0.0 || progressValue > 1.0) {
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177 | if (progressBar.Style != ProgressBarStyle.Marquee)
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178 | progressBar.Style = ProgressBarStyle.Marquee;
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179 | } else {
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180 | if (progressBar.Style != ProgressBarStyle.Blocks)
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181 | progressBar.Style = ProgressBarStyle.Blocks;
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182 | progressBar.Value = (int)Math.Round(progressBar.Minimum + progressValue * (progressBar.Maximum - progressBar.Minimum));
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183 | }
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184 | }
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185 | }
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186 | }
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187 |
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188 | private void UpdateProgressStatus() {
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189 | if (InvokeRequired) Invoke((Action)UpdateProgressStatus);
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190 | else if (Content != null)
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191 | statusLabel.Text = Content.Status;
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192 | }
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193 |
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194 | private void cancelButton_Click(object sender, EventArgs e) {
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195 | if (Content != null) {
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196 | try {
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197 | Content.Cancel(CancelTimeoutMs);
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198 | ReadOnly = true;
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199 | cancelButtonTimer.Interval = CancelTimeoutMs;
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200 | cancelButtonTimer.Start();
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201 | } catch (NotSupportedException nse) {
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202 | PluginInfrastructure.ErrorHandling.ShowErrorDialog(nse);
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203 | }
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204 | }
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205 | }
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206 |
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207 | private void cancelButtonTimer_Tick(object sender, EventArgs e) {
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208 | cancelButtonTimer.Stop();
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209 | if (Visible) ReadOnly = false;
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210 | }
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211 | }
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212 | }
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