mattercontrol/MatterControlLib/DesignTools/Operations/ArrayObject3D.cs

/*
Copyright (c) 2023, Lars Brubaker, John Lewin
All rights reserved.

Redistribution and use in source and binary forms, with or without
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   list of conditions and the following disclaimer.
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   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

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*/

using System.Threading;
using MatterHackers.DataConverters3D;

namespace MatterHackers.MatterControl.DesignTools.Operations
{
    public abstract class ArrayObject3D : OperationSourceContainerObject3D
    {
        public abstract IntOrExpression Count { get; set; }

        public override void Apply(Agg.UI.UndoBuffer undoBuffer)
        {
            var indexExpansions = new (string key, int index)[]
            {
                ("[index]", 0),
                ("[index0]", 0),
                ("[index1]", 1),
                ("[index2]", 2),
            };

            // convert [index] expressions to their constant values
            foreach (var item in this.Descendants((item) => !(item is ArrayObject3D)))
            {
                foreach (var expansion in indexExpansions)
                {
                    foreach (var expression in Expressions.GetActiveExpression(item, expansion.key, false))
                    {
                        var expressionValue = expression.Expression;
                        expression.Expression = expressionValue.Replace(expansion.key, Expressions.RetrieveArrayIndex(item, expansion.index).ToString());
                    }

                    // Also convert index expressions in ComponentObjects to their constants
                    if (item is IComponentObject3D component)
                    {
                        for (int i = 0; i < component.SurfacedEditors.Count; i++)
                        {
                            var (cellId, cellData) = component.DecodeContent(i);

                            if (cellId != null)
                            {
                                var newValue = cellData.Replace(expansion.key, Expressions.RetrieveArrayIndex(component, expansion.index).ToString());
                                component.SurfacedEditors[i] = "!" + cellId + "," + newValue;
                            }
                        }
                    }
                }
            }

            // then call base apply
            base.Apply(undoBuffer);
        }

        internal void ProcessIndexExpressions()
        {
            var updateItems = Expressions.SortAndLockUpdateItems(this, (item) =>
            {
                if (!Expressions.HasExpressionWithString(item, "=", true))
                {
                    return false;
                }

                // WIP
                if (item.Parent == this)
                {
                    // only process our children that are not the source object
                    return !(item is OperationSourceObject3D);
                }
                else if (item.Parent is OperationSourceContainerObject3D)
                {
                    // If we find another source container
                    // Only process its children that are the source container (they will be replicated and modified correctly by the source container)
                    return item is OperationSourceObject3D;
                }
                else if (item.Parent is OperationSourceObject3D operationSourceObject3D
                    && operationSourceObject3D.Parent == this)
                {
                    // we don't need to rebuild our source object
                    return false;
                }
                else if (item.Parent is IComponentObject3D)
                {
                    return false;
                }

                // process everything else
                return true;
            }, true);

            var runningInterval = Expressions.SendInvalidateInRebuildOrder(updateItems, InvalidateType.Properties);

            while (runningInterval.Active)
            {
                Thread.Sleep(10);
            }
        }
    }
}