internal DockOperation GetDockOperation(DragEventArgs e)
{
DockOperation result = DockOperation.Window;
if (InvalidateIndicator(_leftSelector, _leftIndicator, e))
{
result = DockOperation.Left;
}
if (InvalidateIndicator(_rightSelector, _rightIndicator, e))
{
result = DockOperation.Right;
}
if (InvalidateIndicator(_topSelector, _topIndicator, e))
{
result = DockOperation.Top;
}
if (InvalidateIndicator(_bottomSelector, _bottomIndicator, e))
{
result = DockOperation.Bottom;
}
if (InvalidateIndicator(_centerSelector, _centerIndicator, e))
{
result = DockOperation.Fill;
}
return(result);
}
private bool Validate(Point point, DockOperation operation, DragAction dragAction, IVisual relativeTo)
{
if (_targetDropControl is null)
{
return(false);
}
var layout = _hostWindow.Window?.Layout;
if (layout?.ActiveDockable is { } sourceDockable&& _targetDropControl.DataContext is IDockable targetDockable)
{
DockManager.Position = DockHelpers.ToDockPoint(point);
if (relativeTo.VisualRoot is null)
{
return(false);
}
var screenPoint = relativeTo.PointToScreen(point).ToPoint(1.0);
DockManager.ScreenPosition = DockHelpers.ToDockPoint(screenPoint);
return(DockManager.ValidateDockable(sourceDockable, targetDockable, dragAction, operation, bExecute: false));
}
return(false);
}
/// <inheritdoc/>
public void Enter(object sender, DragEventArgs e, object sourceContext, object targetContext)
{
DockOperation operation = DockOperation.Fill;
bool isView = sourceContext is IView view;
if (Validate(sender, e, sourceContext, targetContext, operation) == false)
{
if (!isView)
{
e.DragEffects = DragDropEffects.None;
e.Handled = true;
}
}
else
{
if (isView && sender is DockPanel panel)
{
if (sender is IVisual visual)
{
_adornerHelper.AddAdorner(visual);
}
}
e.DragEffects |= DragDropEffects.Copy | DragDropEffects.Move | DragDropEffects.Link;
e.Handled = true;
}
}
/// <inheritdoc/>
public void Drop(object sender, DragEventArgs e, object sourceContext, object targetContext)
{
DockOperation operation = DockOperation.Fill;
bool isView = sourceContext is IView view;
if (_adornerHelper.Adorner is DockTarget target)
{
operation = target.GetDockOperation(e);
}
if (isView && sender is DockPanel panel)
{
_adornerHelper.RemoveAdorner(sender as IVisual);
}
if (Execute(sender, e, targetContext, sourceContext, operation) == false)
{
if (!isView)
{
e.DragEffects = DragDropEffects.None;
e.Handled = true;
}
}
else
{
e.DragEffects |= DragDropEffects.Copy | DragDropEffects.Move | DragDropEffects.Link;
e.Handled = true;
}
}
private bool Validate(Point point, DockOperation operation, DragAction dragAction, IVisual relativeTo)
{
if (_dragControl == null || _dropControl == null)
{
return(false);
}
if (_dragControl.DataContext is IDockable sourceDockable && _dropControl.DataContext is IDockable targetDockable)
{
DockManager.Position = DockHelpers.ToDockPoint(point);
DockManager.ScreenPosition = DockHelpers.ToDockPoint(relativeTo.PointToScreen(point).ToPoint(1.0));
return(DockManager.ValidateDockable(sourceDockable, targetDockable, dragAction, operation, bExecute: false));
}
return(false);
}
private bool Execute(Point point, DockOperation operation, DragAction dragAction, IVisual relativeTo)
{
if (_dragControl == null || _dropControl == null)
{
return(false);
}
if (_dragControl.DataContext is IDockable sourceDockable && _dropControl.DataContext is IDockable targetDockable)
{
Debug.WriteLine($"Execute : {point} : {operation} : {dragAction} : {sourceDockable.Title} -> {targetDockable.Title}");
_dockManager.Position = DockHelpers.ToDockPoint(point);
_dockManager.ScreenPosition = DockHelpers.ToDockPoint(relativeTo.PointToScreen(point).ToPoint(1.0));
return(_dockManager.ValidateDockable(sourceDockable, targetDockable, dragAction, operation, bExecute: true));
}
return(false);
}
/// <inheritdoc/>
public virtual void Split(IDock dock, IView view, DockOperation operation)
{
switch (operation)
{
case DockOperation.Left:
case DockOperation.Right:
case DockOperation.Top:
case DockOperation.Bottom:
{
var layout = CreateSplitLayout(dock, view, dock.Context, operation);
Replace(dock, layout);
Update(layout, dock.Context, dock.Parent);
}
break;
default:
throw new NotSupportedException($"Not support dock operation: {operation}.");
}
}
/// <inheritdoc/>
public bool Validate(IView sourceView, IView targetView, DragAction action, DockOperation operation, bool bExecute)
{
switch (sourceView)
{
case IRootDock sourceRoot:
{
return(ValidateRoot(sourceRoot, targetView, action, operation, bExecute));
}
case IToolTab sourceToolTab:
{
return(ValidateToolTab(sourceToolTab, targetView, action, operation, bExecute));
}
case IDocumentTab sourceDocumentTab:
{
return(ValidateDocumentTab(sourceDocumentTab, targetView, action, operation, bExecute));
}
case ILayoutDock sourceLayout:
{
return(ValidateLayout(sourceLayout, targetView, action, operation, bExecute));
}
case ITabDock sourceTab:
{
return(ValidateTab(sourceTab, targetView, action, operation, bExecute));
}
default:
{
#if DEBUG
Console.WriteLine($"Not supported type {sourceView.GetType()}: {sourceView} -> {targetView}");
#endif
return(false);
}
}
}
/// <inheritdoc/>
public void Over(object sender, DragEventArgs e, object sourceContext, object targetContext)
{
bool isView = sourceContext is IView view;
DockOperation operation = DockOperation.Fill;
if (_adornerHelper.Adorner is DockTarget target)
{
operation = target.GetDockOperation(e);
}
if (Validate(sender, e, sourceContext, targetContext, operation) == false)
{
if (!isView)
{
e.DragEffects = DragDropEffects.None;
e.Handled = true;
}
}
else
{
e.DragEffects |= DragDropEffects.Copy | DragDropEffects.Move | DragDropEffects.Link;
e.Handled = true;
}
}
internal bool DockIntoWindow(IView sourceView, IView targetView, DragAction action, DockOperation operation, bool bExecute)
{
#if DEBUG
Console.WriteLine($"{nameof(DockIntoWindow)}: {sourceView.Title} -> {targetView.Title}");
#endif
switch (operation)
{
case DockOperation.Fill:
{
if (sourceView != targetView &&
sourceView.Parent != targetView &&
sourceView.Parent is IDock sourceViewParent &&
sourceViewParent.Factory is IDockFactory factory &&
factory.FindRoot(sourceView) is IDock root &&
root.CurrentView is IDock currentViewRoot)
{
if (bExecute)
{
factory.RemoveView(sourceView);
var window = factory.CreateWindowFrom(sourceView);
if (window != null)
{
factory.AddWindow(currentViewRoot, window, sourceView.Context);
window.X = ScreenPosition.X;
window.Y = ScreenPosition.Y;
window.Width = 300;
window.Height = 400;
window.Present(false);
}
}
return(true);
}
break;
}
}
return(false);
}
internal bool DockIntoTab(ITab sourceTab, ITabDock targetTabParent, DragAction action, DockOperation operation, bool bExecute)
{
#if DEBUG
Console.WriteLine($"{nameof(DockIntoTab)}: {sourceTab.Title} -> {targetTabParent.Title}");
#endif
if (sourceTab.Parent is ITabDock sourceTabParent)
{
IView targetTab = targetTabParent.Views.LastOrDefault();
switch (action)
{
case DragAction.Copy:
{
if (bExecute)
{
// TODO: Clone item.
}
return(true);
}
case DragAction.Move:
{
switch (operation)
{
case DockOperation.Fill:
{
if (sourceTabParent.Factory is IDockFactory factory)
{
if (bExecute)
{
factory.MoveView(sourceTabParent, targetTabParent, sourceTab, targetTab);
}
return(true);
}
return(false);
}
case DockOperation.Left:
case DockOperation.Right:
case DockOperation.Top:
case DockOperation.Bottom:
{
switch (sourceTab)
{
case IToolTab toolTab:
{
if (bExecute)
{
if (targetTabParent.Factory is IDockFactory factory)
{
factory.RemoveView(sourceTab);
IDock tool = factory.CreateToolDock();
tool.Id = nameof(IToolDock);
tool.Title = nameof(IToolDock);
tool.CurrentView = sourceTab;
tool.Views = factory.CreateList <IView>();
tool.Views.Add(sourceTab);
factory.Split(targetTabParent, tool, operation);
}
}
return(true);
}
case IDocumentTab documentTab:
{
if (bExecute)
{
if (targetTabParent.Factory is IDockFactory factory)
{
factory.RemoveView(sourceTab);
IDock document = factory.CreateDocumentDock();
document.Id = nameof(IDocumentDock);
document.Title = nameof(IDocumentDock);
document.CurrentView = sourceTab;
document.Views = factory.CreateList <IView>();
document.Views.Add(sourceTab);
factory.Split(targetTabParent, document, operation);
}
}
return(true);
}
default:
{
#if DEBUG
Console.WriteLine($"Not supported tab type {sourceTab.GetType().Name} to splitting : {sourceTab} -> {targetTabParent}");
#endif
return(false);
}
}
}
case DockOperation.Window:
{
return(false);
}
}
return(false);
}
case DragAction.Link:
{
if (bExecute)
{
if (sourceTabParent.Factory is IDockFactory factory)
{
factory.SwapView(sourceTabParent, targetTabParent, sourceTab, targetTab);
}
}
return(true);
}
}
return(false);
}
return(false);
}
internal void SplitDocumentDockable(IDockable sourceDockable, IDock sourceDockableOwner, IDock targetDock, DockOperation operation)
{
if (targetDock.Factory is IFactory factory)
{
IDock documentDock = factory.CreateDocumentDock();
documentDock.Id = nameof(IDocumentDock);
documentDock.Title = nameof(IDocumentDock);
documentDock.VisibleDockables = factory.CreateList <IDockable>();
factory.MoveDockable(sourceDockableOwner, documentDock, sourceDockable, null);
factory.SplitToDock(targetDock, documentDock, operation);
}
}
///<inheritdoc/>
public bool ValidateDock(IDock sourceDock, IDockable targetDockable, DragAction action, DockOperation operation, bool bExecute)
{
switch (targetDockable)
{
case IRootDock _:
return(DockDockableIntoWindow(sourceDock, targetDockable, operation, bExecute));
case IToolDock toolDock:
if (sourceDock == toolDock)
{
return(false);
}
return(DockDockable(sourceDock, targetDockable, toolDock, action, operation, bExecute));
case IDocumentDock documentDock:
if (sourceDock == documentDock)
{
return(false);
}
return(DockDockable(sourceDock, targetDockable, documentDock, action, operation, bExecute));
case IPinDock pinDock:
if (sourceDock == pinDock)
{
return(false);
}
return(DockDockable(sourceDock, targetDockable, pinDock, action, operation, bExecute));
case IProportionalDock proportionalDock:
if (sourceDock == proportionalDock)
{
return(false);
}
return(DockDockable(sourceDock, targetDockable, proportionalDock, action, operation, bExecute));
default:
return(false);
}
}
///<inheritdoc/>
public bool ValidateTool(ITool sourceTool, IDockable targetDockable, DragAction action, DockOperation operation, bool bExecute)
{
switch (targetDockable)
{
case IRootDock _:
return(DockDockableIntoWindow(sourceTool, targetDockable, operation, bExecute));
case IToolDock toolDock:
return(DockDockableIntoDock(sourceTool, toolDock, action, operation, bExecute));
case IDocumentDock documentDock:
return(DockDockableIntoDock(sourceTool, documentDock, action, operation, bExecute));
case IPinDock pinDock:
return(DockDockableIntoDock(sourceTool, pinDock, action, operation, bExecute));
case ITool tool:
return(DockDockableIntoDockable(sourceTool, tool, action, bExecute));
case IDocument document:
return(DockDockableIntoDockable(sourceTool, document, action, bExecute));
default:
return(false);
}
}
internal bool ValidateLayout(ILayoutDock sourceLayout, IView targetView, DragAction action, DockOperation operation, bool bExecute)
{
switch (targetView)
{
case IRootDock targetRoot:
{
return(false);
}
case IToolTab sourceToolTab:
{
return(false);
}
case IDocumentTab sourceDocumentTab:
{
return(false);
}
case ILayoutDock targetLayout:
{
return(false);
}
case ITabDock targetTab:
{
return(false);
}
default:
{
Logger.Log($"Not supported type {targetView.GetType()}: {sourceLayout} -> {targetView}");
return(false);
}
}
}
internal bool DockDockintoDock(IDock sourceDock, IDock targetDock, DragAction action, DockOperation operation, bool bExecute)
{
var visible = sourceDock.VisibleDockables.ToList();
if (visible.Count == 1)
{
if (DockDockableIntoDock(visible.First(), targetDock, action, operation, bExecute) == false)
{
return(false);
}
}
else
{
if (DockDockableIntoDock(visible.First(), targetDock, action, operation, bExecute) == false)
{
return(false);
}
foreach (var dockable in visible.Skip(1))
{
if (DockDockableIntoDockable(dockable, visible.First(), action, bExecute) == false)
{
return(false);
}
}
}
return(true);
}
internal bool DockDockable(IDock sourceDock, IDockable targetDockable, IDock targetDock, DragAction action, DockOperation operation, bool bExecute)
{
switch (operation)
{
case DockOperation.Fill:
return(DockDockableIntoDockVisible(sourceDock, targetDock, action, operation, bExecute));
case DockOperation.Window:
return(DockDockableIntoWindow(sourceDock, targetDockable, operation, bExecute));
default:
return(DockDockintoDock(sourceDock, targetDock, action, operation, bExecute));
}
}
internal bool ValidateTab(ITabDock sourceTab, IView targetView, DragAction action, DockOperation operation, bool bExecute)
{
switch (targetView)
{
case IRootDock targetRoot:
{
return(DockIntoWindow(sourceTab, targetView, action, operation, bExecute));
}
case IToolTab sourceToolTab:
{
return(false);
}
case IDocumentTab sourceDocumentTab:
{
return(false);
}
case ILayoutDock targetLayout:
{
return(false);
}
case ITabDock targetTab:
{
if (bExecute)
{
switch (operation)
{
case DockOperation.Fill:
foreach (var tab in sourceTab.Views.OfType <ITab>().ToList())
{
DockIntoTab(tab, targetTab, action, operation, bExecute);
}
return(true);
case DockOperation.Window:
{
return(DockIntoWindow(sourceTab, targetView, action, operation, bExecute));
}
default:
{
// when we are splitting.
var toMove = sourceTab.Views.OfType <ITab>().ToList();
if (toMove.Count == 1)
{
DockIntoTab(toMove.First(), targetTab, action, operation, bExecute);
}
else
{
DockIntoTab(toMove.First(), targetTab, action, operation, bExecute);
foreach (var tab in toMove.Skip(1))
{
DockIntoTab(tab, toMove.First(), action, DockOperation.Fill, bExecute);
}
}
}
return(true);
}
}
return(true);
}
default:
{
Logger.Log($"Not supported type {targetView.GetType()}: {sourceTab} -> {targetView}");
return(false);
}
}
}
///<inheritdoc/>
public bool ValidateDocument(IDocument sourceDocument, IDockable targetDockable, DragAction action, DockOperation operation, bool bExecute)
{
switch (targetDockable)
{
case IRootDock _:
return(DockDockableIntoWindow(sourceDocument, targetDockable, operation, bExecute));
case IDocumentDock documentDock:
return(DockDockableIntoDock(sourceDocument, documentDock, action, operation, bExecute));
case IDocument document:
return(DockDockableIntoDockable(sourceDocument, document, action, bExecute));
default:
return(false);
}
}
internal bool SplitDockable(IDockable sourceDockable, IDock sourceDockableOwner, IDock targetDock, DockOperation operation, bool bExecute)
{
switch (sourceDockable)
{
case ITool _:
if (sourceDockableOwner == targetDock)
{
if (targetDock.VisibleDockables?.Count == 1)
{
return(false);
}
}
if (bExecute)
{
SplitToolDockable(sourceDockable, sourceDockableOwner, targetDock, operation);
}
return(true);
case IDocument _:
if (sourceDockableOwner == targetDock)
{
if (targetDock.VisibleDockables?.Count == 1)
{
return(false);
}
}
if (bExecute)
{
SplitDocumentDockable(sourceDockable, sourceDockableOwner, targetDock, operation);
}
return(true);
default:
return(false);
}
}
///<inheritdoc/>
public bool ValidateDockable(IDockable sourceDockable, IDockable targetDockable, DragAction action, DockOperation operation, bool bExecute)
{
switch (sourceDockable)
{
case IToolDock toolDock:
return(ValidateDock(toolDock, targetDockable, action, operation, bExecute));
case IDocumentDock documentDock:
return(ValidateDock(documentDock, targetDockable, action, operation, bExecute));
case IPinDock pinDock:
return(ValidateDock(pinDock, targetDockable, action, operation, bExecute));
case IProportionalDock proportionalDock:
return(ValidateDock(proportionalDock, targetDockable, action, operation, bExecute));
case ITool tool:
return(ValidateTool(tool, targetDockable, action, operation, bExecute));
case IDocument document:
return(ValidateDocument(document, targetDockable, action, operation, bExecute));
default:
return(false);
}
}
internal bool DockDockableIntoWindow(IDockable sourceDockable, IDockable targetDockable, DockOperation operation, bool bExecute)
{
switch (operation)
{
case DockOperation.Window:
if (sourceDockable == targetDockable)
{
return(false);
}
if (sourceDockable.Owner is IDock sourceDockableOwner)
{
if (sourceDockableOwner.Factory is IFactory factory)
{
if (factory.FindRoot(sourceDockable) is IRootDock root && root.ActiveDockable is IDock targetWindowOwner)
{
if (bExecute)
{
factory.SplitToWindow(targetWindowOwner, sourceDockable, ScreenPosition.X, ScreenPosition.Y, 300, 400);
}
return(true);
}
}
}
return(false);
default:
return(false);
}
}
/// <inheritdoc/>
public bool Execute(object sourceContext, object targetContext, object sender, DockOperation operation, DragEventArgs e)
{
// FIXME:
//if (context is ProjectEditor editor)
//{
// return Validate(editor, sender, e, true);
//}
return(false);
}
internal bool DockDockable(IDockable sourceDockable, IDock sourceDockableOwner, IDock targetDock, DockOperation operation, bool bExecute)
{
switch (operation)
{
case DockOperation.Fill:
return(MoveDockable(sourceDockable, sourceDockableOwner, targetDock, bExecute));
case DockOperation.Left:
case DockOperation.Right:
case DockOperation.Top:
case DockOperation.Bottom:
return(SplitDockable(sourceDockable, sourceDockableOwner, targetDock, operation, bExecute));
case DockOperation.Window:
return(DockDockableIntoWindow(sourceDockable, targetDock, operation, bExecute));
default:
return(false);
}
}
internal bool DockIntoTab(ITab sourceTab, ITab targetTab, DragAction action, DockOperation operation, bool bExecute)
{
#if DEBUG
Console.WriteLine($"{nameof(DockIntoTab)}: {sourceTab.Title} -> {targetTab.Title}");
#endif
if (sourceTab.Parent is ITabDock sourceTabParent && targetTab.Parent is ITabDock targetTabParent)
{
if (sourceTabParent == targetTabParent)
{
switch (action)
{
case DragAction.Copy:
{
if (bExecute)
{
// TODO: Clone item.
}
return(true);
}
case DragAction.Move:
{
if (bExecute)
{
if (sourceTabParent.Factory is IDockFactory factory)
{
factory.MoveView(sourceTabParent, sourceTab, targetTab);
}
}
return(true);
}
case DragAction.Link:
{
if (bExecute)
{
if (sourceTabParent.Factory is IDockFactory factory)
{
factory.SwapView(sourceTabParent, sourceTab, targetTab);
}
}
return(true);
}
}
return(false);
}
else
{
switch (action)
{
case DragAction.Copy:
{
if (bExecute)
{
// TODO: Clone item.
}
return(true);
}
case DragAction.Move:
{
if (bExecute)
{
if (sourceTabParent.Factory is IDockFactory factory)
{
factory.MoveView(sourceTabParent, targetTabParent, sourceTab, targetTab);
}
}
return(true);
}
case DragAction.Link:
{
if (bExecute)
{
if (sourceTabParent.Factory is IDockFactory factory)
{
factory.SwapView(sourceTabParent, targetTabParent, sourceTab, targetTab);
}
}
return(true);
}
}
return(false);
}
}
return(false);
}
internal bool DockDockableIntoDock(IDockable sourceDockable, IDock targetDock, DragAction action, DockOperation operation, bool bExecute)
{
if (sourceDockable.Owner is IDock sourceDockableOwner)
{
return(DockDockableIntoDock(sourceDockable, sourceDockableOwner, targetDock, action, operation, bExecute));
}
return(false);
}
internal bool ValidateTab(ITabDock sourceTab, IView targetView, DragAction action, DockOperation operation, bool bExecute)
{
switch (targetView)
{
case IRootDock targetRoot:
{
return(DockIntoWindow(sourceTab, targetView, action, operation, bExecute));
}
case IToolTab sourceToolTab:
{
return(false);
}
case IDocumentTab sourceDocumentTab:
{
return(false);
}
case ILayoutDock targetLayout:
{
return(false);
}
case ITabDock targetTab:
{
return(false);
}
default:
{
#if DEBUG
Console.WriteLine($"Not supported type {targetView.GetType()}: {sourceTab} -> {targetView}");
#endif
return(false);
}
}
}
internal bool DockDockableIntoDock(IDockable sourceDockable, IDock sourceDockableOwner, IDock targetDock, DragAction action, DockOperation operation, bool bExecute)
{
switch (action)
{
case DragAction.Copy:
return(false);
case DragAction.Move:
return(DockDockable(sourceDockable, sourceDockableOwner, targetDock, operation, bExecute));
case DragAction.Link:
return(SwapDockable(sourceDockable, sourceDockableOwner, targetDock, bExecute));
default:
return(false);
}
}
private bool InvalidateIndicator(Control?selector, Grid?indicator, Point point, IVisual relativeTo, DockOperation operation, DragAction dragAction, Func <Point, DockOperation, DragAction, IVisual, bool> validate)
{
if (selector != null && indicator != null)
{
var selectorPoint = relativeTo.TranslatePoint(point, selector);
if (selectorPoint != null && selector.InputHitTest(selectorPoint.Value) != null && validate(point, operation, dragAction, relativeTo) == true)
{
indicator.Opacity = 0.5;
return(true);
}
else
{
indicator.Opacity = 0;
return(false);
}
}
return(false);
}
internal bool DockDockableIntoDockVisible(IDock sourceDock, IDock targetDock, DragAction action, DockOperation operation, bool bExecute)
{
var visible = sourceDock.VisibleDockables.ToList();
foreach (var dockable in visible)
{
if (DockDockableIntoDock(dockable, targetDock, action, operation, bExecute) == false)
{
return(false);
}
}
return(true);
}