public void Add(CategoryItemViewModel dragSource, CategoryItemViewModel dropTarget)
{
DoDrop(dragSource, dropTarget, () =>
{
if (dropTarget != null)
{
dropTarget.CategoryItem.Items.Add(dragSource.CategoryItem);
dropTarget.Items.Add(dragSource);
}
else
{
ViewModelLocator.Locator.Main.Items.Add(dragSource);
}
});
}
private void Insert(CategoryItemViewModel dragSource, CategoryItemViewModel dropTarget, int indexModifier)
{
DoDrop(dragSource, dropTarget, () =>
{
if (dropTarget != null)
{
if (dropTarget.Parent != null)
{
var parent = dropTarget.Parent;
var index = parent.CategoryItem.Items.IndexOf(dropTarget.CategoryItem) + indexModifier;
if (index < 0)
{
index = 0;
}
else if (index > parent.CategoryItem.Items.Count)
{
index = parent.CategoryItem.Items.Count;
}
parent.CategoryItem.Items.Insert(index, dragSource.CategoryItem);
parent.Items.Insert(index, dragSource);
dragSource.Parent = parent;
}
else
{
var items = ViewModelLocator.Locator.Main.Items;
var index = items.IndexOf(dropTarget) + indexModifier;
if (index < 0)
{
index = 0;
}
else if (index > items.Count)
{
index = items.Count;
}
items.Insert(index, dragSource);
}
}
else
{
ViewModelLocator.Locator.Main.Items.Add(dragSource);
}
});
}
public void ExecuteCreateCategoryCommand()
{
var civm = new CategoryItemViewModel(new CategoryItem
{
DisplayName = Resources.New + " " + Resources.Category
}, null);
Items.Add(civm);
SelectedItem = civm;
_telemetryService.TrackEvent(
"Create",
new Dictionary <string, string>
{
{ "Type", "Category" }
});
}
public void Drop(CategoryItemViewModel dragSource, CategoryItemViewModel dropTarget)
{
ViewModelLocator.Locator.Main.SuspendSave = true;
// Prevent dropping a parent on its child.
if (dropTarget != null)
{
if (dragSource.Items.GetFlatList(x => x.Items, x => x == dropTarget).Any())
{
return;
}
}
if (dragSource.Parent != null)
{
dragSource.Parent.CategoryItem.Items.Remove(dragSource.CategoryItem);
dragSource.Parent.Items.Remove(dragSource);
dragSource.Parent = null;
}
else
{
ViewModelLocator.Locator.Main.Items.Remove(dragSource);
}
if (dropTarget != null)
{
dropTarget.CategoryItem.Items.Add(dragSource.CategoryItem);
dropTarget.Items.Add(dragSource);
dragSource.Parent = dropTarget;
}
else
{
ViewModelLocator.Locator.Main.Items.Add(dragSource);
}
ViewModelLocator.Locator.Main.SuspendSave = false;
ViewModelLocator.Locator.Main.SaveConnections();
ViewModelLocator.Locator.Main.SelectedItem = dragSource;
}
private void DoDrop(
CategoryItemViewModel dragSource,
CategoryItemViewModel dropTarget,
Action doDrop)
{
if (dragSource == null)
{
return;
}
// Prevent dropping a parent on its child.
if (dropTarget != null)
{
if (dragSource.Items.GetFlatList(x => x.Items, x => x == dropTarget).Any())
{
return;
}
}
ViewModelLocator.Locator.Main.SuspendSave = true;
// Remove the drag source from it's parent.
if (dragSource.Parent != null)
{
dragSource.Parent.CategoryItem.Items.Remove(dragSource.CategoryItem);
dragSource.Parent.Items.Remove(dragSource);
dragSource.Parent = null;
}
else
{
ViewModelLocator.Locator.Main.Items.Remove(dragSource);
}
doDrop();
ViewModelLocator.Locator.Main.SuspendSave = false;
ViewModelLocator.Locator.Main.SaveConnections();
ViewModelLocator.Locator.Main.SelectedItem = dragSource;
}
public CategoryItemViewModel(CategoryItem categoryItem, CategoryItemViewModel parent)
{
CategoryItem = categoryItem;
Parent = parent;
if (CategoryItem.ConnectionSettings != null)
{
ConnectionSettings = new ConnectionSettingsViewModel(this);
Properties = ConnectionSettings;
}
else if (CategoryItem.Credentials != null)
{
Credentials = new CredentialsViewModel(this);
Properties = Credentials;
}
else
{
Properties = new GenericPropertiesViewModel(this);
}
Items = new ObservableCollection <CategoryItemViewModel>();
}
private CategoryItemViewModel[] LoadSettingsRecursive(IList <CategoryItem> items, CategoryItemViewModel parent)
{
if (items == null || items.Count == 0)
{
return(new CategoryItemViewModel[] { });
}
var civms = items.Select(x => new CategoryItemViewModel(x, parent)).ToArray();
foreach (var civm in civms)
{
civm.Items.CollectionChanged += CollectionChanged;
var children = LoadSettingsRecursive(civm.CategoryItem.Items, civm);
children.ForEach(x => civm.Items.Add(x));
}
return(civms);
}
public void InsertAfter(CategoryItemViewModel dragSource, CategoryItemViewModel dropTarget)
{
Insert(dragSource, dropTarget, +1);
}
public void InsertBefore(CategoryItemViewModel dragSource, CategoryItemViewModel dropTarget)
{
Insert(dragSource, dropTarget, 0);
}