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using System;
using System.Collections;
using System.Drawing;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Security.Permissions;
using System.Diagnostics.CodeAnalysis;
namespace WeifenLuo.WinFormsUI.Docking
{
public class FloatWindow : Form, INestedPanesContainer, IDockDragSource
{
private NestedPaneCollection m_nestedPanes;
internal const int WM_CHECKDISPOSE = (int)(Win32.Msgs.WM_USER + 1);
internal protected FloatWindow(DockPanel dockPanel, DockPane pane)
{
InternalConstruct(dockPanel, pane, false, Rectangle.Empty);
}
internal protected FloatWindow(DockPanel dockPanel, DockPane pane, Rectangle bounds)
{
InternalConstruct(dockPanel, pane, true, bounds);
}
private void InternalConstruct(DockPanel dockPanel, DockPane pane, bool boundsSpecified, Rectangle bounds)
{
if (dockPanel == null)
throw(new ArgumentNullException(Strings.FloatWindow_Constructor_NullDockPanel));
m_nestedPanes = new NestedPaneCollection(this);
FormBorderStyle = FormBorderStyle.Sizable;
MaximizeBox = false;
MinimizeBox = false;
ShowInTaskbar = true;
ShowIcon = false;
TopMost = false;
if (dockPanel.RightToLeft != RightToLeft)
RightToLeft = dockPanel.RightToLeft;
if (RightToLeftLayout != dockPanel.RightToLeftLayout)
RightToLeftLayout = dockPanel.RightToLeftLayout;
SuspendLayout();
if (boundsSpecified)
{
Bounds = bounds;
StartPosition = FormStartPosition.Manual;
}
else
{
StartPosition = FormStartPosition.CenterScreen;
Size = dockPanel.DefaultFloatWindowSize;
}
m_dockPanel = dockPanel;
Owner = DockPanel.FindForm();
DockPanel.AddFloatWindow(this);
if (pane != null)
pane.FloatWindow = this;
ResumeLayout();
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
if (DockPanel != null)
DockPanel.RemoveFloatWindow(this);
m_dockPanel = null;
}
base.Dispose(disposing);
}
private bool m_allowEndUserDocking = true;
public bool AllowEndUserDocking
{
get { return m_allowEndUserDocking; }
set { m_allowEndUserDocking = value; }
}
private bool m_doubleClickTitleBarToDock = true;
public bool DoubleClickTitleBarToDock
{
get { return m_doubleClickTitleBarToDock; }
set { m_doubleClickTitleBarToDock = value; }
}
public NestedPaneCollection NestedPanes
{
get { return m_nestedPanes; }
}
public VisibleNestedPaneCollection VisibleNestedPanes
{
get { return NestedPanes.VisibleNestedPanes; }
}
private DockPanel m_dockPanel;
public DockPanel DockPanel
{
get { return m_dockPanel; }
}
public DockState DockState
{
get { return DockState.Float; }
}
public bool IsFloat
{
get { return DockState == DockState.Float; }
}
internal bool IsDockStateValid(DockState dockState)
{
foreach (DockPane pane in NestedPanes)
foreach (IDockContent content in pane.Contents)
if (!DockHelper.IsDockStateValid(dockState, content.DockHandler.DockAreas))
return false;
return true;
}
protected override void OnActivated(EventArgs e)
{
DockPanel.FloatWindows.BringWindowToFront(this);
base.OnActivated (e);
// Propagate the Activated event to the visible panes content objects
foreach (DockPane pane in VisibleNestedPanes)
foreach (IDockContent content in pane.Contents)
content.OnActivated(e);
}
protected override void OnDeactivate(EventArgs e)
{
base.OnDeactivate(e);
// Propagate the Deactivate event to the visible panes content objects
foreach (DockPane pane in VisibleNestedPanes)
foreach (IDockContent content in pane.Contents)
content.OnDeactivate(e);
}
protected override void OnLayout(LayoutEventArgs levent)
{
VisibleNestedPanes.Refresh();
RefreshChanges();
Visible = (VisibleNestedPanes.Count > 0);
SetText();
base.OnLayout(levent);
}
[SuppressMessage("Microsoft.Globalization", "CA1303:DoNotPassLiteralsAsLocalizedParameters", MessageId = "System.Windows.Forms.Control.set_Text(System.String)")]
internal void SetText()
{
DockPane theOnlyPane = (VisibleNestedPanes.Count == 1) ? VisibleNestedPanes[0] : null;
if (theOnlyPane == null || theOnlyPane.ActiveContent == null)
{
Text = " "; // use " " instead of string.Empty because the whole title bar will disappear when ControlBox is set to false.
Icon = null;
}
else
{
Text = theOnlyPane.ActiveContent.DockHandler.TabText;
Icon = theOnlyPane.ActiveContent.DockHandler.Icon;
}
}
protected override void SetBoundsCore(int x, int y, int width, int height, BoundsSpecified specified)
{
Rectangle rectWorkArea = SystemInformation.VirtualScreen;
if (y + height > rectWorkArea.Bottom)
y -= (y + height) - rectWorkArea.Bottom;
if (y < rectWorkArea.Top)
y += rectWorkArea.Top - y;
base.SetBoundsCore (x, y, width, height, specified);
}
[SecurityPermission(SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.UnmanagedCode)]
protected override void WndProc(ref Message m)
{
switch (m.Msg)
{
case (int)Win32.Msgs.WM_NCLBUTTONDOWN:
{
if (IsDisposed)
return;
uint result = Win32Helper.IsRunningOnMono ? 0 : NativeMethods.SendMessage(this.Handle, (int)Win32.Msgs.WM_NCHITTEST, 0, (uint)m.LParam);
if (result == 2 && DockPanel.AllowEndUserDocking && this.AllowEndUserDocking) // HITTEST_CAPTION
{
Activate();
m_dockPanel.BeginDrag(this);
}
else
base.WndProc(ref m);
return;
}
case (int)Win32.Msgs.WM_NCRBUTTONDOWN:
{
uint result = Win32Helper.IsRunningOnMono ? 0 : NativeMethods.SendMessage(this.Handle, (int)Win32.Msgs.WM_NCHITTEST, 0, (uint)m.LParam);
if (result == 2) // HITTEST_CAPTION
{
DockPane theOnlyPane = (VisibleNestedPanes.Count == 1) ? VisibleNestedPanes[0] : null;
if (theOnlyPane != null && theOnlyPane.ActiveContent != null)
{
theOnlyPane.ShowTabPageContextMenu(this, PointToClient(Control.MousePosition));
return;
}
}
base.WndProc(ref m);
return;
}
case (int)Win32.Msgs.WM_CLOSE:
if (NestedPanes.Count == 0)
{
base.WndProc(ref m);
return;
}
for (int i = NestedPanes.Count - 1; i >= 0; i--)
{
DockContentCollection contents = NestedPanes[i].Contents;
for (int j = contents.Count - 1; j >= 0; j--)
{
IDockContent content = contents[j];
if (content.DockHandler.DockState != DockState.Float)
continue;
if (!content.DockHandler.CloseButton)
continue;
if (content.DockHandler.HideOnClose)
content.DockHandler.Hide();
else
content.DockHandler.Close();
}
}
return;
case (int)Win32.Msgs.WM_NCLBUTTONDBLCLK:
{
uint result = !DoubleClickTitleBarToDock || Win32Helper.IsRunningOnMono
? 0
: NativeMethods.SendMessage(this.Handle, (int)Win32.Msgs.WM_NCHITTEST, 0, (uint)m.LParam);
if (result != 2) // HITTEST_CAPTION
{
base.WndProc(ref m);
return;
}
DockPanel.SuspendLayout(true);
// Restore to panel
foreach (DockPane pane in NestedPanes)
{
if (pane.DockState != DockState.Float)
continue;
pane.RestoreToPanel();
}
DockPanel.ResumeLayout(true, true);
return;
}
case WM_CHECKDISPOSE:
if (NestedPanes.Count == 0)
Dispose();
return;
}
base.WndProc(ref m);
}
internal void RefreshChanges()
{
if (IsDisposed)
return;
if (VisibleNestedPanes.Count == 0)
{
ControlBox = true;
return;
}
for (int i=VisibleNestedPanes.Count - 1; i>=0; i--)
{
DockContentCollection contents = VisibleNestedPanes[i].Contents;
for (int j=contents.Count - 1; j>=0; j--)
{
IDockContent content = contents[j];
if (content.DockHandler.DockState != DockState.Float)
continue;
if (content.DockHandler.CloseButton && content.DockHandler.CloseButtonVisible)
{
ControlBox = true;
return;
}
}
}
//Only if there is a ControlBox do we turn it off
//old code caused a flash of the window.
if (ControlBox)
ControlBox = false;
}
public virtual Rectangle DisplayingRectangle
{
get { return ClientRectangle; }
}
internal void TestDrop(IDockDragSource dragSource, DockOutlineBase dockOutline)
{
if (VisibleNestedPanes.Count == 1)
{
DockPane pane = VisibleNestedPanes[0];
if (!dragSource.CanDockTo(pane))
return;
Point ptMouse = Control.MousePosition;
uint lParam = Win32Helper.MakeLong(ptMouse.X, ptMouse.Y);
if (!Win32Helper.IsRunningOnMono)
{
if (NativeMethods.SendMessage(Handle, (int)Win32.Msgs.WM_NCHITTEST, 0, lParam) == (uint)Win32.HitTest.HTCAPTION)
{
dockOutline.Show(VisibleNestedPanes[0], -1);
}
}
}
}
#region IDockDragSource Members
#region IDragSource Members
Control IDragSource.DragControl
{
get { return this; }
}
#endregion
bool IDockDragSource.IsDockStateValid(DockState dockState)
{
return IsDockStateValid(dockState);
}
bool IDockDragSource.CanDockTo(DockPane pane)
{
if (!IsDockStateValid(pane.DockState))
return false;
if (pane.FloatWindow == this)
return false;
return true;
}
private int m_preDragExStyle;
Rectangle IDockDragSource.BeginDrag(Point ptMouse)
{
m_preDragExStyle = NativeMethods.GetWindowLong(this.Handle, (int)Win32.GetWindowLongIndex.GWL_EXSTYLE);
NativeMethods.SetWindowLong(this.Handle,
(int)Win32.GetWindowLongIndex.GWL_EXSTYLE,
m_preDragExStyle | (int)(Win32.WindowExStyles.WS_EX_TRANSPARENT | Win32.WindowExStyles.WS_EX_LAYERED) );
return Bounds;
}
void IDockDragSource.EndDrag()
{
NativeMethods.SetWindowLong(this.Handle, (int)Win32.GetWindowLongIndex.GWL_EXSTYLE, m_preDragExStyle);
Invalidate(true);
NativeMethods.SendMessage(this.Handle, (int)Win32.Msgs.WM_NCPAINT, 1, 0);
}
public void FloatAt(Rectangle floatWindowBounds)
{
Bounds = floatWindowBounds;
}
public void DockTo(DockPane pane, DockStyle dockStyle, int contentIndex)
{
if (dockStyle == DockStyle.Fill)
{
for (int i = NestedPanes.Count - 1; i >= 0; i--)
{
DockPane paneFrom = NestedPanes[i];
for (int j = paneFrom.Contents.Count - 1; j >= 0; j--)
{
IDockContent c = paneFrom.Contents[j];
c.DockHandler.Pane = pane;
if (contentIndex != -1)
pane.SetContentIndex(c, contentIndex);
c.DockHandler.Activate();
}
}
}
else
{
DockAlignment alignment = DockAlignment.Left;
if (dockStyle == DockStyle.Left)
alignment = DockAlignment.Left;
else if (dockStyle == DockStyle.Right)
alignment = DockAlignment.Right;
else if (dockStyle == DockStyle.Top)
alignment = DockAlignment.Top;
else if (dockStyle == DockStyle.Bottom)
alignment = DockAlignment.Bottom;
MergeNestedPanes(VisibleNestedPanes, pane.NestedPanesContainer.NestedPanes, pane, alignment, 0.5);
}
}
public void DockTo(DockPanel panel, DockStyle dockStyle)
{
if (panel != DockPanel)
throw new ArgumentException(Strings.IDockDragSource_DockTo_InvalidPanel, "panel");
NestedPaneCollection nestedPanesTo = null;
if (dockStyle == DockStyle.Top)
nestedPanesTo = DockPanel.DockWindows[DockState.DockTop].NestedPanes;
else if (dockStyle == DockStyle.Bottom)
nestedPanesTo = DockPanel.DockWindows[DockState.DockBottom].NestedPanes;
else if (dockStyle == DockStyle.Left)
nestedPanesTo = DockPanel.DockWindows[DockState.DockLeft].NestedPanes;
else if (dockStyle == DockStyle.Right)
nestedPanesTo = DockPanel.DockWindows[DockState.DockRight].NestedPanes;
else if (dockStyle == DockStyle.Fill)
nestedPanesTo = DockPanel.DockWindows[DockState.Document].NestedPanes;
DockPane prevPane = null;
for (int i = nestedPanesTo.Count - 1; i >= 0; i--)
if (nestedPanesTo[i] != VisibleNestedPanes[0])
prevPane = nestedPanesTo[i];
MergeNestedPanes(VisibleNestedPanes, nestedPanesTo, prevPane, DockAlignment.Left, 0.5);
}
private static void MergeNestedPanes(VisibleNestedPaneCollection nestedPanesFrom, NestedPaneCollection nestedPanesTo, DockPane prevPane, DockAlignment alignment, double proportion)
{
if (nestedPanesFrom.Count == 0)
return;
int count = nestedPanesFrom.Count;
DockPane[] panes = new DockPane[count];
DockPane[] prevPanes = new DockPane[count];
DockAlignment[] alignments = new DockAlignment[count];
double[] proportions = new double[count];
for (int i = 0; i < count; i++)
{
panes[i] = nestedPanesFrom[i];
prevPanes[i] = nestedPanesFrom[i].NestedDockingStatus.PreviousPane;
alignments[i] = nestedPanesFrom[i].NestedDockingStatus.Alignment;
proportions[i] = nestedPanesFrom[i].NestedDockingStatus.Proportion;
}
DockPane pane = panes[0].DockTo(nestedPanesTo.Container, prevPane, alignment, proportion);
panes[0].DockState = nestedPanesTo.DockState;
for (int i = 1; i < count; i++)
{
for (int j = i; j < count; j++)
{
if (prevPanes[j] == panes[i - 1])
prevPanes[j] = pane;
}
pane = panes[i].DockTo(nestedPanesTo.Container, prevPanes[i], alignments[i], proportions[i]);
panes[i].DockState = nestedPanesTo.DockState;
}
}
#endregion
private void InitializeComponent()
{
this.SuspendLayout();
//
// FloatWindow
//
this.AutoScaleDimensions = new System.Drawing.SizeF(96F, 96F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Dpi;
this.ClientSize = new System.Drawing.Size(284, 261);
this.Name = "FloatWindow";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
this.Load += new System.EventHandler(this.FloatWindow_Load);
this.ResumeLayout(false);
}
private void FloatWindow_Load(object sender, EventArgs e)
{
}
}
}
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