private bool ValidateTreeView(ProjectEditor editor, DragEventArgs e, bool bExecute, TreeView tree)
{
var sourceItem = e.Data.Get(DragDataFormats.Parent);
var targetItem = (e.Source as IControl)?.Parent?.Parent;
if (sourceItem is TreeViewItem source && targetItem is TreeViewItem target)
{
var sourceData = source.DataContext;
var targetData = target.DataContext;
switch (sourceData)
{
case LayerContainer sourceLayer:
{
switch (targetData)
{
case LayerContainer targetLayer:
{
if (bExecute)
{
// TODO:
}
return(true);
}
case PageContainer targetPage:
{
if (e.DragEffects == DragDropEffects.Copy)
{
if (bExecute)
{
var layer = editor?.Clone(sourceLayer);
editor?.Project.AddLayer(targetPage, layer);
}
return(true);
}
else if (e.DragEffects == DragDropEffects.Move)
{
if (bExecute)
{
editor?.Project?.RemoveLayer(sourceLayer);
editor?.Project.AddLayer(targetPage, sourceLayer);
}
return(true);
}
else if (e.DragEffects == DragDropEffects.Link)
{
if (bExecute)
{
editor?.Project.AddLayer(targetPage, sourceLayer);
e.DragEffects = DragDropEffects.None;
}
return(true);
}
return(false);
}
case DocumentContainer targetDocument:
{
if (bExecute)
{
// TODO:
}
return(true);
}
}
return(false);
}
case PageContainer sourcePage:
{
switch (targetData)
{
case LayerContainer targetLayer:
{
if (bExecute)
{
// TODO:
}
return(true);
}
case PageContainer targetPage:
{
if (bExecute)
{
// TODO:
}
return(true);
}
case DocumentContainer targetDocument:
{
if (e.DragEffects == DragDropEffects.Copy)
{
if (bExecute)
{
var page = editor?.Clone(sourcePage);
editor?.Project.AddPage(targetDocument, page);
editor?.Project?.SetCurrentContainer(page);
}
return(true);
}
else if (e.DragEffects == DragDropEffects.Move)
{
if (bExecute)
{
editor?.Project?.RemovePage(sourcePage);
editor?.Project.AddPage(targetDocument, sourcePage);
editor?.Project?.SetCurrentContainer(sourcePage);
}
return(true);
}
else if (e.DragEffects == DragDropEffects.Link)
{
if (bExecute)
{
editor?.Project.AddPage(targetDocument, sourcePage);
editor?.Project?.SetCurrentContainer(sourcePage);
}
return(true);
}
return(false);
}
}
return(false);
}
case DocumentContainer sourceDocument:
{
switch (targetData)
{
case LayerContainer targetLayer:
{
if (bExecute)
{
// TODO:
}
return(true);
}
case PageContainer targetPage:
{
if (bExecute)
{
// TODO:
}
return(true);
}
case DocumentContainer targetDocument:
{
if (bExecute)
{
// TODO:
}
return(true);
}
}
return(false);
}
}
}
return(false);
}
