Example #1
0
        /// <summary>
        /// Successively copy the properties from the <paramref name="sourcePanel"/> to the <paramref name="targetPanel"/>, then swap the panels in the parent
        /// and finally move the children from the <paramref name="sourcePanel"/> to the <paramref name="targetPanel"/>.
        /// </summary>
        private void CopySwapExchange([NotNull] PanelViewModel sourcePanel, [NotNull] UIElementDesign targetPanel,
                                      [CanBeNull] Func <IEnumerable <UIElementViewModel>, IEnumerable <UIElementViewModel> > childSorter = null)
        {
            var targetPanelElement = targetPanel.UIElement as Panel;

            if (targetPanelElement == null)
            {
                throw new ArgumentException(@"The target element must be a Panel", nameof(targetPanel));
            }

            // Clone common properties
            CopyCommonProperties(Editor.NodeContainer, sourcePanel.AssetSidePanel, targetPanelElement);

            // Initialize the new hierarchy of elements that starts from the target and contains all the children
            IEnumerable <UIElementViewModel> children = sourcePanel.Children.ToList();
            var hierarchy = UIAssetPropertyGraph.CloneSubHierarchies(Asset.Session.AssetNodeContainer, Asset.Asset, children.Select(c => c.Id.ObjectId), SubHierarchyCloneFlags.None, out _);

            hierarchy.RootParts.Add(targetPanel.UIElement);
            hierarchy.Parts.Add(targetPanel);
            // Remove all children from the source panel.
            foreach (var child in children)
            {
                Asset.AssetHierarchyPropertyGraph.RemovePartFromAsset(child.UIElementDesign);
            }

            // Swap panels in the parent
            var elementParent = Parent as UIElementViewModel;
            var rootParent    = Parent as UIRootViewModel;

            if (rootParent != null)
            {
                // special case of RootElement
                rootParent.ReplaceRootElement(sourcePanel, hierarchy, targetPanelElement.Id);
            }
            else if (elementParent != null)
            {
                // Remove current panel from Parent
                var index = elementParent.Children.IndexOf(sourcePanel);
                Asset.AssetHierarchyPropertyGraph.RemovePartFromAsset(sourcePanel.UIElementDesign);
                Asset.AssetHierarchyPropertyGraph.AddPartToAsset(hierarchy.Parts, targetPanel, elementParent.AssetSideUIElement, index);
            }
            else
            {
                throw new InvalidOperationException();
            }

            // Sort the children list before re-inserting them in the target panel.
            children = childSorter?.Invoke(children) ?? children;

            // Then populate the target panel
            foreach (var child in children)
            {
                Asset.InsertUIElement(hierarchy.Parts, hierarchy.Parts[child.Id.ObjectId], targetPanelElement);
            }
        }
Example #2
0
 public abstract void ReplaceRootElement([NotNull] PanelViewModel sourcePanel, [NotNull] AssetCompositeHierarchyData <UIElementDesign, UIElement> hierarchy, Guid targetPanelId);