public List <AssetViewModel> PasteAssets(List <AssetItem> assets, [CanBeNull] ProjectViewModel project)
{
var viewModels = new List <AssetViewModel>();
// Don't touch the action stack in this case.
if (assets.Count == 0)
{
return(viewModels);
}
var fixedAssets = new List <AssetItem>();
using (var transaction = UndoRedoService.CreateTransaction())
{
// Clean collision by renaming pasted asset if an asset with the same name already exists in that location.
AssetCollision.Clean(null, assets, fixedAssets, AssetResolver.FromPackage(Package), false, false);
// Temporarily add the new asset to the package
fixedAssets.ForEach(x => Package.Assets.Add(x));
// Find which assets are referencing the pasted assets in order to fix the reference link.
var assetsToFix = GetReferencers(Session.DependencyManager, Session, fixedAssets);
// Remove temporarily added assets - they will be properly re-added with the correct action stack entry when creating the view model
fixedAssets.ForEach(x => Package.Assets.Remove(x));
// Create directories and view models, actually add assets to package.
foreach (var asset in fixedAssets)
{
var location = asset.Location.GetFullDirectory() ?? "";
var assetDirectory = project == null?
GetOrCreateAssetDirectory(location, true) :
project.GetOrCreateProjectDirectory(location, true);
var assetViewModel = CreateAsset(assetDirectory, asset, true, null);
viewModels.Add(assetViewModel);
}
// Fix references in the assets that references what we pasted.
// We wrap this operation in an action item so the action stack can properly re-execute it.
var fixReferencesAction = new FixAssetReferenceOperation(assetsToFix, false, true);
fixReferencesAction.FixAssetReferences();
UndoRedoService.PushOperation(fixReferencesAction);
UndoRedoService.SetName(transaction, "Paste assets");
}
return(viewModels);
}
/// <inheritdoc />
protected override async Task Delete()
{
var elementsToDelete = GetCommonRoots(SelectedItems);
var ask = UIEditorSettings.AskBeforeDeletingUIElements.GetValue();
if (ask)
{
var confirmMessage = Tr._p("Message", "Are you sure you want to delete this UI element?");
if (elementsToDelete.Count > 1)
{
confirmMessage = string.Format(Tr._p("Message", "Are you sure you want to delete these {0} UI elements?"), elementsToDelete.Count);
}
var buttons = DialogHelper.CreateButtons(new[] { Tr._p("Button", "Delete"), Tr._p("Button", "Cancel") }, 1, 2);
var result = await ServiceProvider.Get <IDialogService>().CheckedMessageBox(confirmMessage, false, DialogHelper.DontAskAgain, buttons, MessageBoxImage.Question);
if (result.Result != 1)
{
return;
}
if (result.IsChecked == true)
{
UIEditorSettings.AskBeforeDeletingUIElements.SetValue(false);
UIEditorSettings.Save();
}
}
var hadActiveRoot = elementsToDelete.Any(x => ReferenceEquals(x, ActiveRoot));
var asset = elementsToDelete.First().Asset; // all selected items are from the same asset
using (var transaction = UndoRedoService.CreateTransaction())
{
ClearSelection();
HashSet <Tuple <Guid, Guid> > mapping;
asset.AssetHierarchyPropertyGraph.DeleteParts(elementsToDelete.Select(x => x.UIElementDesign), out mapping);
var operation = new DeletedPartsTrackingOperation <UIElementDesign, UIElement>(asset, mapping);
UndoRedoService.PushOperation(operation);
UndoRedoService.SetName(transaction, "Delete selected UI elements");
}
// Clear active root if it was deleted
if (hadActiveRoot)
{
ActiveRoot = null;
}
}