public void AddSibling()
{
{
// Instanciate a new requirement
RequirementModel requirementItem = new RequirementModel
{
ID = Guid.NewGuid(),
Project_ID = Globals.Project_ID,
ArticleNo = "xxx",
ArticleHeader = "New Article",
Version = "",
IsChanged = false,
IsNew = true,
RequirementType_ID = TypeViewModelLocator.GetTypeVM().GetTypeGroupID("Requirement"),
ChildRequirements = new TD.ObservableItemCollection <RequirementModel>()
};
// If no item has been selected, put the object in the root of the tree
if (SelectedItem == null)
{
requirementItem.Parent_ID = null;//
Requirements.Add(requirementItem);
}
// If the selected item is in the root, put the new object in the root also
else if (SelectedItem.Parent_ID == null)
{
requirementItem.Parent_ID = null;
Requirements.Insert(Requirements.IndexOf(SelectedItem) + 1, requirementItem);
}
// Otherwise het the parent object and add the new object as a child
else
{
RequirementModel parentItem = GetRequirement(SelectedItem.Parent_ID);
requirementItem.Parent_ID = SelectedItem.Parent_ID;
parentItem.ChildRequirements.Insert(parentItem.ChildRequirements.IndexOf(SelectedItem) + 1, requirementItem);
}
IsChanged = true;
}
}
public void MoveSelection(TreeListViewRow destination)
{
if (destination != null)
{
RequirementModel destinationItem = (destination.DataContext) as RequirementModel;
try
{
// Setup a private collection with the selected items only. This is because the SelectedItems that are part of the view model collection
// will change as soon as we start removing and adding objects
TD.ObservableItemCollection <RequirementModel> selectedItems = new TD.ObservableItemCollection <RequirementModel>();
foreach (RequirementModel item in SelectedItems)
{
selectedItems.Add(item);
}
foreach (RequirementModel item in selectedItems)
{
// find the original parent of the object that's moved
RequirementModel parentSourceItem = GetRequirement(item.Parent_ID);
// If the parent is in the root level
if (parentSourceItem == null)
{
// Remove the item in the root level
Requirements.Remove(item);
}
else
{
// Otherwise remove the item from the child collection
parentSourceItem.ChildRequirements.Remove(item);
}
TreeListViewDropPosition relativeDropPosition = (TreeListViewDropPosition)destination.GetValue(RadTreeListView.DropPositionProperty);
// If put on top of destination
if (relativeDropPosition == TreeListViewDropPosition.Inside)
{
// the Parent_ID of the item will become the ID of the destination
item.Parent_ID = destinationItem.ID;
destinationItem.ChildRequirements.Add(item);
}
// If put before or after the destination
else
{
// if the desitination is in the root collection
if (destinationItem.Parent_ID == null)
{
// The parent_ID of the item will also be null
item.Parent_ID = null;
Requirements.Insert(Requirements.IndexOf(destinationItem), item);
}
else
{
// otherwise the Parent_ID of the item will be the same as that of the destination item
item.Parent_ID = destinationItem.Parent_ID;
// find the Parent of the destination item
parentSourceItem = GetRequirement(destinationItem.Parent_ID);
// Insert the item above the destination item in the ChildObject collection of the parent of the destination
if (relativeDropPosition == TreeListViewDropPosition.Before)
{
parentSourceItem.ChildRequirements.Insert(parentSourceItem.ChildRequirements.IndexOf(destinationItem), item);
}
else
{
parentSourceItem.ChildRequirements.Insert(parentSourceItem.ChildRequirements.IndexOf(destinationItem) + 1, item);
}
}
}
}
}
catch (Exception ex)
{
RadWindow.Alert(ex.Message);
}
}
}