1 | using System;
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2 | using System.Collections;
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3 | using System.Drawing;
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4 | using System.Windows.Forms;
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5 | using System.Runtime.InteropServices;
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6 | using System.Security.Permissions;
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7 | using System.Diagnostics.CodeAnalysis;
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8 |
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9 | namespace WeifenLuo.WinFormsUI.Docking
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10 | {
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11 | public class FloatWindow : Form, INestedPanesContainer, IDockDragSource
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12 | {
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13 | private NestedPaneCollection m_nestedPanes;
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14 | internal const int WM_CHECKDISPOSE = (int)(Win32.Msgs.WM_USER + 1);
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15 |
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16 | internal protected FloatWindow(DockPanel dockPanel, DockPane pane)
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17 | {
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18 | InternalConstruct(dockPanel, pane, false, Rectangle.Empty);
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19 | }
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20 |
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21 | internal protected FloatWindow(DockPanel dockPanel, DockPane pane, Rectangle bounds)
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22 | {
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23 | InternalConstruct(dockPanel, pane, true, bounds);
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24 | }
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25 |
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26 | private void InternalConstruct(DockPanel dockPanel, DockPane pane, bool boundsSpecified, Rectangle bounds)
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27 | {
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28 | if (dockPanel == null)
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29 | throw(new ArgumentNullException(Strings.FloatWindow_Constructor_NullDockPanel));
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30 |
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31 | m_nestedPanes = new NestedPaneCollection(this);
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32 |
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33 | FormBorderStyle = FormBorderStyle.SizableToolWindow;
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34 | ShowInTaskbar = false;
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35 | if (dockPanel.RightToLeft != RightToLeft)
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36 | RightToLeft = dockPanel.RightToLeft;
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37 | if (RightToLeftLayout != dockPanel.RightToLeftLayout)
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38 | RightToLeftLayout = dockPanel.RightToLeftLayout;
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39 |
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40 | SuspendLayout();
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41 | if (boundsSpecified)
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42 | {
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43 | Bounds = bounds;
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44 | StartPosition = FormStartPosition.Manual;
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45 | }
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46 | else
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47 | {
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48 | StartPosition = FormStartPosition.WindowsDefaultLocation;
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49 | Size = dockPanel.DefaultFloatWindowSize;
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50 | }
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51 |
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52 | m_dockPanel = dockPanel;
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53 | Owner = DockPanel.FindForm();
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54 | DockPanel.AddFloatWindow(this);
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55 | if (pane != null)
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56 | pane.FloatWindow = this;
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57 |
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58 | ResumeLayout();
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59 | }
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60 |
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61 | protected override void Dispose(bool disposing)
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62 | {
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63 | if (disposing)
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64 | {
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65 | if (DockPanel != null)
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66 | DockPanel.RemoveFloatWindow(this);
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67 | m_dockPanel = null;
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68 | }
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69 | base.Dispose(disposing);
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70 | }
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71 |
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72 | private bool m_allowEndUserDocking = true;
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73 | public bool AllowEndUserDocking
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74 | {
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75 | get { return m_allowEndUserDocking; }
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76 | set { m_allowEndUserDocking = value; }
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77 | }
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78 |
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79 | public NestedPaneCollection NestedPanes
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80 | {
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81 | get { return m_nestedPanes; }
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82 | }
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83 |
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84 | public VisibleNestedPaneCollection VisibleNestedPanes
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85 | {
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86 | get { return NestedPanes.VisibleNestedPanes; }
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87 | }
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88 |
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89 | private DockPanel m_dockPanel;
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90 | public DockPanel DockPanel
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91 | {
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92 | get { return m_dockPanel; }
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93 | }
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94 |
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95 | public DockState DockState
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96 | {
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97 | get { return DockState.Float; }
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98 | }
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99 |
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100 | public bool IsFloat
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101 | {
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102 | get { return DockState == DockState.Float; }
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103 | }
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104 |
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105 | internal bool IsDockStateValid(DockState dockState)
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106 | {
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107 | foreach (DockPane pane in NestedPanes)
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108 | foreach (IDockContent content in pane.Contents)
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109 | if (!DockHelper.IsDockStateValid(dockState, content.DockHandler.DockAreas))
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110 | return false;
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111 |
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112 | return true;
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113 | }
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114 |
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115 | protected override void OnActivated(EventArgs e)
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116 | {
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117 | DockPanel.FloatWindows.BringWindowToFront(this);
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118 | base.OnActivated (e);
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119 | // Propagate the Activated event to the visible panes content objects
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120 | foreach (DockPane pane in VisibleNestedPanes)
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121 | foreach (IDockContent content in pane.Contents)
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122 | content.OnActivated(e);
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123 | }
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124 |
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125 | protected override void OnDeactivate(EventArgs e)
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126 | {
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127 | base.OnDeactivate(e);
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128 | // Propagate the Deactivate event to the visible panes content objects
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129 | foreach (DockPane pane in VisibleNestedPanes)
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130 | foreach (IDockContent content in pane.Contents)
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131 | content.OnDeactivate(e);
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132 | }
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133 |
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134 | protected override void OnLayout(LayoutEventArgs levent)
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135 | {
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136 | VisibleNestedPanes.Refresh();
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137 | RefreshChanges();
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138 | Visible = (VisibleNestedPanes.Count > 0);
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139 | SetText();
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140 |
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141 | base.OnLayout(levent);
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142 | }
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143 |
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144 |
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145 | [SuppressMessage("Microsoft.Globalization", "CA1303:DoNotPassLiteralsAsLocalizedParameters", MessageId = "System.Windows.Forms.Control.set_Text(System.String)")]
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146 | internal void SetText()
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147 | {
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148 | DockPane theOnlyPane = (VisibleNestedPanes.Count == 1) ? VisibleNestedPanes[0] : null;
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149 |
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150 | if (theOnlyPane == null)
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151 | Text = " "; // use " " instead of string.Empty because the whole title bar will disappear when ControlBox is set to false.
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152 | else if (theOnlyPane.ActiveContent == null)
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153 | Text = " ";
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154 | else
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155 | Text = theOnlyPane.ActiveContent.DockHandler.TabText;
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156 | }
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157 |
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158 | protected override void SetBoundsCore(int x, int y, int width, int height, BoundsSpecified specified)
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159 | {
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160 | Rectangle rectWorkArea = SystemInformation.VirtualScreen;
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161 |
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162 | if (y + height > rectWorkArea.Bottom)
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163 | y -= (y + height) - rectWorkArea.Bottom;
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164 |
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165 | if (y < rectWorkArea.Top)
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166 | y += rectWorkArea.Top - y;
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167 |
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168 | base.SetBoundsCore (x, y, width, height, specified);
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169 | }
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170 |
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171 | [SecurityPermission(SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.UnmanagedCode)]
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172 | protected override void WndProc(ref Message m)
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173 | {
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174 | if (m.Msg == (int)Win32.Msgs.WM_NCLBUTTONDOWN)
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175 | {
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176 | if (IsDisposed)
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177 | return;
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178 |
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179 | uint result = NativeMethods.SendMessage(this.Handle, (int)Win32.Msgs.WM_NCHITTEST, 0, (uint)m.LParam);
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180 | if (result == 2 && DockPanel.AllowEndUserDocking && this.AllowEndUserDocking) // HITTEST_CAPTION
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181 | {
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182 | Activate();
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183 | m_dockPanel.BeginDrag(this);
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184 | }
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185 | else
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186 | base.WndProc(ref m);
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187 |
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188 | return;
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189 | }
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190 | else if (m.Msg == (int)Win32.Msgs.WM_NCRBUTTONDOWN)
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191 | {
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192 | uint result = NativeMethods.SendMessage(this.Handle, (int)Win32.Msgs.WM_NCHITTEST, 0, (uint)m.LParam);
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193 | if (result == 2) // HITTEST_CAPTION
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194 | {
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195 | DockPane theOnlyPane = (VisibleNestedPanes.Count == 1) ? VisibleNestedPanes[0] : null;
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196 | if (theOnlyPane != null && theOnlyPane.ActiveContent != null)
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197 | {
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198 | theOnlyPane.ShowTabPageContextMenu(this, PointToClient(Control.MousePosition));
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199 | return;
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200 | }
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201 | }
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202 |
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203 | base.WndProc(ref m);
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204 | return;
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205 | }
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206 | else if (m.Msg == (int)Win32.Msgs.WM_CLOSE)
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207 | {
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208 | if (NestedPanes.Count == 0)
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209 | {
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210 | base.WndProc(ref m);
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211 | return;
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212 | }
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213 |
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214 | for (int i = NestedPanes.Count - 1; i >= 0; i--)
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215 | {
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216 | DockContentCollection contents = NestedPanes[i].Contents;
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217 | for (int j = contents.Count - 1; j >= 0; j--)
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218 | {
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219 | IDockContent content = contents[j];
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220 | if (content.DockHandler.DockState != DockState.Float)
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221 | continue;
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222 |
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223 | if (!content.DockHandler.CloseButton)
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224 | continue;
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225 |
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226 | if (content.DockHandler.HideOnClose)
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227 | content.DockHandler.Hide();
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228 | else
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229 | content.DockHandler.Close();
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230 | }
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231 | }
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232 |
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233 | return;
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234 | }
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235 | else if (m.Msg == (int)Win32.Msgs.WM_NCLBUTTONDBLCLK)
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236 | {
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237 | uint result = NativeMethods.SendMessage(this.Handle, (int)Win32.Msgs.WM_NCHITTEST, 0, (uint)m.LParam);
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238 | if (result != 2) // HITTEST_CAPTION
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239 | {
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240 | base.WndProc(ref m);
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241 | return;
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242 | }
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243 |
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244 | DockPanel.SuspendLayout(true);
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245 |
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246 | // Restore to panel
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247 | foreach (DockPane pane in NestedPanes)
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248 | {
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249 | if (pane.DockState != DockState.Float)
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250 | continue;
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251 | pane.RestoreToPanel();
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252 | }
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253 |
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254 |
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255 | DockPanel.ResumeLayout(true, true);
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256 | return;
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257 | }
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258 | else if (m.Msg == WM_CHECKDISPOSE)
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259 | {
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260 | if (NestedPanes.Count == 0)
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261 | Dispose();
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262 |
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263 | return;
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264 | }
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265 |
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266 | base.WndProc(ref m);
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267 | }
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268 |
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269 | internal void RefreshChanges()
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270 | {
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271 | if (IsDisposed)
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272 | return;
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273 |
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274 | if (VisibleNestedPanes.Count == 0)
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275 | {
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276 | ControlBox = true;
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277 | return;
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278 | }
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279 |
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280 | for (int i=VisibleNestedPanes.Count - 1; i>=0; i--)
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281 | {
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282 | DockContentCollection contents = VisibleNestedPanes[i].Contents;
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283 | for (int j=contents.Count - 1; j>=0; j--)
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284 | {
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285 | IDockContent content = contents[j];
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286 | if (content.DockHandler.DockState != DockState.Float)
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287 | continue;
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288 |
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289 | if (content.DockHandler.CloseButton && content.DockHandler.CloseButtonVisible)
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290 | {
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291 | ControlBox = true;
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292 | return;
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293 | }
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294 | }
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295 | }
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296 | //Only if there is a ControlBox do we turn it off
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297 | //old code caused a flash of the window.
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298 | if (ControlBox)
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299 | ControlBox = false;
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300 | }
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301 |
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302 | public virtual Rectangle DisplayingRectangle
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303 | {
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304 | get { return ClientRectangle; }
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305 | }
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306 |
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307 | internal void TestDrop(IDockDragSource dragSource, DockOutlineBase dockOutline)
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308 | {
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309 | if (VisibleNestedPanes.Count == 1)
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310 | {
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311 | DockPane pane = VisibleNestedPanes[0];
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312 | if (!dragSource.CanDockTo(pane))
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313 | return;
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314 |
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315 | Point ptMouse = Control.MousePosition;
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316 | uint lParam = Win32Helper.MakeLong(ptMouse.X, ptMouse.Y);
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317 | if (NativeMethods.SendMessage(Handle, (int)Win32.Msgs.WM_NCHITTEST, 0, lParam) == (uint)Win32.HitTest.HTCAPTION)
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318 | dockOutline.Show(VisibleNestedPanes[0], -1);
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319 | }
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320 | }
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321 |
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322 | #region IDockDragSource Members
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323 |
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324 | #region IDragSource Members
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325 |
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326 | Control IDragSource.DragControl
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327 | {
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328 | get { return this; }
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329 | }
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330 |
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331 | #endregion
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332 |
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333 | bool IDockDragSource.IsDockStateValid(DockState dockState)
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334 | {
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335 | return IsDockStateValid(dockState);
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336 | }
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337 |
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338 | bool IDockDragSource.CanDockTo(DockPane pane)
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339 | {
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340 | if (!IsDockStateValid(pane.DockState))
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341 | return false;
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342 |
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343 | if (pane.FloatWindow == this)
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344 | return false;
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345 |
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346 | return true;
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347 | }
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348 |
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349 | Rectangle IDockDragSource.BeginDrag(Point ptMouse)
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350 | {
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351 | return Bounds;
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352 | }
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353 |
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354 | public void FloatAt(Rectangle floatWindowBounds)
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355 | {
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356 | Bounds = floatWindowBounds;
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357 | }
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358 |
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359 | public void DockTo(DockPane pane, DockStyle dockStyle, int contentIndex)
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360 | {
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361 | if (dockStyle == DockStyle.Fill)
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362 | {
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363 | for (int i = NestedPanes.Count - 1; i >= 0; i--)
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364 | {
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365 | DockPane paneFrom = NestedPanes[i];
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366 | for (int j = paneFrom.Contents.Count - 1; j >= 0; j--)
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367 | {
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368 | IDockContent c = paneFrom.Contents[j];
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369 | c.DockHandler.Pane = pane;
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370 | if (contentIndex != -1)
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371 | pane.SetContentIndex(c, contentIndex);
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372 | c.DockHandler.Activate();
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373 | }
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374 | }
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375 | }
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376 | else
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377 | {
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378 | DockAlignment alignment = DockAlignment.Left;
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379 | if (dockStyle == DockStyle.Left)
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380 | alignment = DockAlignment.Left;
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381 | else if (dockStyle == DockStyle.Right)
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382 | alignment = DockAlignment.Right;
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383 | else if (dockStyle == DockStyle.Top)
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384 | alignment = DockAlignment.Top;
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385 | else if (dockStyle == DockStyle.Bottom)
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386 | alignment = DockAlignment.Bottom;
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387 |
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388 | MergeNestedPanes(VisibleNestedPanes, pane.NestedPanesContainer.NestedPanes, pane, alignment, 0.5);
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389 | }
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390 | }
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391 |
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392 | public void DockTo(DockPanel panel, DockStyle dockStyle)
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393 | {
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394 | if (panel != DockPanel)
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395 | throw new ArgumentException(Strings.IDockDragSource_DockTo_InvalidPanel, "panel");
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396 |
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397 | NestedPaneCollection nestedPanesTo = null;
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398 |
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399 | if (dockStyle == DockStyle.Top)
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400 | nestedPanesTo = DockPanel.DockWindows[DockState.DockTop].NestedPanes;
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401 | else if (dockStyle == DockStyle.Bottom)
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402 | nestedPanesTo = DockPanel.DockWindows[DockState.DockBottom].NestedPanes;
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403 | else if (dockStyle == DockStyle.Left)
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404 | nestedPanesTo = DockPanel.DockWindows[DockState.DockLeft].NestedPanes;
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405 | else if (dockStyle == DockStyle.Right)
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406 | nestedPanesTo = DockPanel.DockWindows[DockState.DockRight].NestedPanes;
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407 | else if (dockStyle == DockStyle.Fill)
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408 | nestedPanesTo = DockPanel.DockWindows[DockState.Document].NestedPanes;
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409 |
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410 | DockPane prevPane = null;
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411 | for (int i = nestedPanesTo.Count - 1; i >= 0; i--)
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412 | if (nestedPanesTo[i] != VisibleNestedPanes[0])
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413 | prevPane = nestedPanesTo[i];
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414 | MergeNestedPanes(VisibleNestedPanes, nestedPanesTo, prevPane, DockAlignment.Left, 0.5);
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415 | }
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416 |
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417 | private static void MergeNestedPanes(VisibleNestedPaneCollection nestedPanesFrom, NestedPaneCollection nestedPanesTo, DockPane prevPane, DockAlignment alignment, double proportion)
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418 | {
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419 | if (nestedPanesFrom.Count == 0)
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420 | return;
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421 |
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422 | int count = nestedPanesFrom.Count;
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423 | DockPane[] panes = new DockPane[count];
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424 | DockPane[] prevPanes = new DockPane[count];
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425 | DockAlignment[] alignments = new DockAlignment[count];
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426 | double[] proportions = new double[count];
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427 |
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428 | for (int i = 0; i < count; i++)
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429 | {
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430 | panes[i] = nestedPanesFrom[i];
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431 | prevPanes[i] = nestedPanesFrom[i].NestedDockingStatus.PreviousPane;
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432 | alignments[i] = nestedPanesFrom[i].NestedDockingStatus.Alignment;
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433 | proportions[i] = nestedPanesFrom[i].NestedDockingStatus.Proportion;
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434 | }
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435 |
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436 | DockPane pane = panes[0].DockTo(nestedPanesTo.Container, prevPane, alignment, proportion);
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437 | panes[0].DockState = nestedPanesTo.DockState;
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438 |
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439 | for (int i = 1; i < count; i++)
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440 | {
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441 | for (int j = i; j < count; j++)
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442 | {
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443 | if (prevPanes[j] == panes[i - 1])
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444 | prevPanes[j] = pane;
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445 | }
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446 | pane = panes[i].DockTo(nestedPanesTo.Container, prevPanes[i], alignments[i], proportions[i]);
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447 | panes[i].DockState = nestedPanesTo.DockState;
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448 | }
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449 | }
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450 |
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451 | #endregion
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452 | }
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453 | }
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