private int GetChildIndexForHeader(MultiPanel.HeaderRenderInformation child, List<MultiPanel.HeaderRenderInformation> headerRenderAreas)
{
var index = -1;
foreach (var area in headerRenderAreas)
{
index++;
if (area == child) break;
}
return index;
}
/// <summary>
/// Invoked when an unhandled System.Windows.Input.Mouse.MouseUp routed event reaches an element in its route that is derived from this class. Implement this method to add class handling for this event.
/// </summary>
/// <param name="multiPanel">The multi panel.</param>
/// <param name="e">The <see cref="T:System.Windows.Input.MouseButtonEventArgs" /> that contains the event data. The event data reports that the mouse button was released.</param>
/// <param name="headerRenderAreas"></param>
public void OnMouseUp(MultiPanel multiPanel, MouseButtonEventArgs e, List<MultiPanel.HeaderRenderInformation> headerRenderAreas)
{
if (e.ChangedButton != MouseButton.Left) return;
if (_lastLeftMouseDownPosition.X < 0 || _lastLeftMouseDownPosition.Y < 0) return;
var position = e.GetPosition(multiPanel);
var overClose = false;
var lastLeftMouseDownPosition = new Point(_lastLeftMouseDownPosition.X, _lastLeftMouseDownPosition.Y);
_lastLeftMouseDownPosition = new Point(-1, -1); // Since we are now in up-state again, we wipe out the last info
foreach (var child in headerRenderAreas.Where(area => area.TotalArea.Contains(lastLeftMouseDownPosition) && SimpleView.GetClosable(area.Child)))
{
var clientArea = GetClientArea(child.TotalArea);
if (Orientation == Orientation.Horizontal)
{
var headerHeight = clientArea.Top - child.TotalArea.Top;
overClose = (lastLeftMouseDownPosition.Y <= clientArea.Top && lastLeftMouseDownPosition.X >= child.TotalArea.Width - headerHeight);
}
else
{
var headerWidth = clientArea.Left - child.TotalArea.Left;
overClose = (lastLeftMouseDownPosition.X <= clientArea.Left && lastLeftMouseDownPosition.Y <= child.TotalArea.Top + headerWidth);
}
}
if (!overClose) return; // The down-click didn't happen over a close button, so we are already done
MultiPanel.HeaderRenderInformation elementInfo = null;
foreach (var child in headerRenderAreas.Where(area => area.TotalArea.Contains(position) && SimpleView.GetClosable(area.Child)))
{
var clientArea = GetClientArea(child.TotalArea);
if (Orientation == Orientation.Horizontal)
{
var headerHeight = clientArea.Top - child.TotalArea.Top;
if (position.Y <= clientArea.Top && position.X >= child.TotalArea.Width - headerHeight)
{
elementInfo = child;
break;
}
}
else
{
var headerWidth = clientArea.Left - child.TotalArea.Left;
if (position.X <= clientArea.Left && position.Y <= child.TotalArea.Top + headerWidth)
{
elementInfo = child;
break;
}
}
}
if (elementInfo == null) return; // The up-click wasn't over a close button, so we ignore it
var action = SimpleView.GetCloseAction(elementInfo.Child);
if (action == null)
elementInfo.Child.Visibility = Visibility.Collapsed;
else if (action.CanExecute(elementInfo.Child))
action.Execute(elementInfo.Child);
multiPanel.InvalidateArrange();
multiPanel.InvalidateMeasure();
multiPanel.InvalidateVisual();
}
/// <summary>
/// Invoked when an unhandled System.Windows.Input.Mouse.MouseMove attached event reaches an element in its route that is derived from this class. Implement this method to add class handling for this event.
/// </summary>
/// <param name="multiPanel">The multi panel.</param>
/// <param name="e">The <see cref="T:System.Windows.Input.MouseEventArgs" /> that contains the event data.</param>
/// <param name="headerRenderAreas"></param>
public void OnMouseMove(MultiPanel multiPanel, MouseEventArgs e, List<MultiPanel.HeaderRenderInformation> headerRenderAreas)
{
var position = e.GetPosition(multiPanel);
if (e.LeftButton == MouseButtonState.Pressed)
foreach (var child in headerRenderAreas.Where(area => area.TotalArea.Contains(position) && SimpleView.GetSupportsDocking(area.Child)))
{
var clientArea = GetClientArea(child.TotalArea);
if (Orientation == Orientation.Horizontal)
{
if (position.Y > clientArea.Top) continue;
}
else
{
if (position.X > clientArea.Left) continue;
}
var floatWindow = new FloatingDockWindow(multiPanel, SimpleView.GetTitle(child.Child), GetChildIndexForHeader(child, headerRenderAreas)) { Height = child.TotalArea.Height + 25, Width = child.TotalArea.Width + 10 };
if (FloatWindowStyle != null) floatWindow.Style = FloatWindowStyle;
try
{
if (TemplatedParent == null)
{
if (multiPanel.Children.Contains(child.Child)) multiPanel.Children.Remove(child.Child);
}
else
{
var itemsControl = TemplatedParent as ItemsControl;
if (itemsControl != null)
{
if (itemsControl.Items.Contains(child.Child)) itemsControl.Items.Remove(child.Child);
}
else
{
var itemsPresenter = TemplatedParent as ItemsPresenter;
if (itemsPresenter != null)
{
var itemsControl2 = ElementHelper.FindVisualTreeParent<ItemsControl>(itemsPresenter) as ItemsControl;
if (itemsControl2 != null)
{
if (itemsControl2.Items.Contains(child.Child)) itemsControl2.Items.Remove(child.Child);
}
}
}
}
floatWindow.Content = child.Child;
}
catch
{
}
var absolutePosition = multiPanel.PointToScreen(position);
floatWindow.Top = absolutePosition.Y - 10;
floatWindow.Left = absolutePosition.X - 20;
floatWindow.Show();
multiPanel.InvalidateArrange();
multiPanel.InvalidateMeasure();
multiPanel.InvalidateVisual();
e.Handled = true;
floatWindow.DragMove();
return;
}
// We check whether we need to show a special cursor
if (e.LeftButton == MouseButtonState.Released)
{
var overClose = false;
foreach (var child in headerRenderAreas.Where(area => area.TotalArea.Contains(position) && SimpleView.GetClosable(area.Child)))
{
var clientArea = GetClientArea(child.TotalArea);
if (Orientation == Orientation.Horizontal)
{
var headerHeight = clientArea.Top - child.TotalArea.Top;
overClose = (position.Y <= clientArea.Top && position.X >= child.TotalArea.Width - headerHeight);
}
else
{
var headerWidth = clientArea.Left - child.TotalArea.Left;
overClose = (position.X <= clientArea.Left && position.Y <= child.TotalArea.Top + headerWidth);
}
}
Mouse.SetCursor(overClose ? Cursors.Hand : Cursors.Arrow);
if (overClose) e.Handled = true;
}
}
/// <summary>
/// Invoked when an unhandled System.Windows.Input.Mouse.MouseLeave attached event is raised on this element. Implement this method to add class handling for this event.
/// </summary>
/// <param name="multiPanel">The multi panel.</param>
/// <param name="e">The <see cref="T:System.Windows.Input.MouseEventArgs" /> that contains the event data.</param>
/// <param name="headerRenderAreas"></param>
public void OnMouseLeave(MultiPanel multiPanel, MouseEventArgs e, List<MultiPanel.HeaderRenderInformation> headerRenderAreas)
{
}
/// <summary>
/// Invoked when an unhandled System.Windows.Input.Mouse.MouseDown attached event reaches an element in its route that is derived from this class. Implement this method to add class handling for this event.
/// </summary>
/// <param name="multiPanel">The multi panel.</param>
/// <param name="e">The <see cref="T:System.Windows.Input.MouseButtonEventArgs" /> that contains the event data. This event data reports details about the mouse button that was pressed and the handled state.</param>
/// <param name="headerRenderAreas"></param>
public void OnMouseDown(MultiPanel multiPanel, MouseButtonEventArgs e, List<MultiPanel.HeaderRenderInformation> headerRenderAreas)
{
if (e.ChangedButton != MouseButton.Left) return;
_lastLeftMouseDownPosition = e.GetPosition(multiPanel);
}
/// <summary>
/// Initializes a new instance of the <see cref="FloatingDockWindow" /> class.
/// </summary>
/// <param name="multiPanel">The multi panel parent container.</param>
/// <param name="title">The title.</param>
/// <param name="oldChildIndex">Old index of the child in the multi panel.</param>
public FloatingDockWindow(MultiPanel multiPanel, string title, int oldChildIndex)
{
DataContext = multiPanel.DataContext;
Title = title;
Closing += (o, e) =>
{
if (AutoDockOnClose)
{
var content = Content as UIElement;
Content = null;
if (content != null)
{
multiPanel.Children.Insert(oldChildIndex, content);
multiPanel.InvalidateArrange();
multiPanel.InvalidateMeasure();
multiPanel.InvalidateVisual();
}
}
};
}
