porting 7.6-rc1 into 8

src/Umbraco.Web/PropertyEditors/MultiNodeTreePicker2PropertyEditor.cs

@@ -0,0 +1,124 @@
+using System.Collections.Generic;
+using Umbraco.Core;
+using Umbraco.Core.Logging;
+using Umbraco.Core.Models;
+using Umbraco.Core.PropertyEditors;
+
+namespace Umbraco.Web.PropertyEditors
+{
+    [PropertyEditor(Constants.PropertyEditors.MultiNodeTreePicker2Alias, "Multinode Treepicker", PropertyEditorValueTypes.Text, "contentpicker", Group = "pickers", Icon = "icon-page-add")]
+    public class MultiNodeTreePicker2PropertyEditor : PropertyEditor
+    {
+        public MultiNodeTreePicker2PropertyEditor(ILogger logger)
+            : base(logger)
+        {
+            InternalPreValues = new Dictionary<string, object>
+            {
+                {"multiPicker", "1"},
+                {"showOpenButton", "0"},
+                {"showEditButton", "0"},
+                {"showPathOnHover", "0"},
+                {"idType", "udi"}
+            };
+        }
+
+        protected override PreValueEditor CreatePreValueEditor()
+        {
+            return new MultiNodePickerPreValueEditor();
+        }
+
+        internal IDictionary<string, object> InternalPreValues;
+
+        public override IDictionary<string, object> DefaultPreValues
+        {
+            get => InternalPreValues;
+            set => InternalPreValues = value;
+        }
+
+        internal class MultiNodePickerPreValueEditor : PreValueEditor
+        {
+            public MultiNodePickerPreValueEditor()
+            {
+                //create the fields
+                Fields.Add(new PreValueField()
+                {
+                    Key = "startNode",
+                    View = "treesource",
+                    Name = "Node type",
+                    Config = new Dictionary<string, object>
+                    {
+                        {"idType", "udi"}
+                    }
+                });
+                Fields.Add(new PreValueField()
+                {
+                    Key = "filter",
+                    View = "textstring",
+                    Name = "Allow items of type",
+                    Description = "Separate with comma"
+                });
+                Fields.Add(new PreValueField()
+                {
+                    Key = "minNumber",
+                    View = "number",
+                    Name = "Minimum number of items"
+                });
+                Fields.Add(new PreValueField()
+                {
+                    Key = "maxNumber",
+                    View = "number",
+                    Name = "Maximum number of items"
+                });
+                Fields.Add(new PreValueField()
+                {
+                    Key = "showOpenButton",
+                    View = "boolean",
+                    Name = "Show open button (this feature is in preview!)",
+                    Description = "Opens the node in a dialog"
+                });
+            }
+
+            /// <summary>
+            /// This ensures the multiPicker pre-val is set based on the maxNumber of nodes set
+            /// </summary>
+            /// <param name="defaultPreVals"></param>
+            /// <param name="persistedPreVals"></param>
+            /// <returns></returns>
+            /// <remarks>
+            /// Due to compatibility with 7.0.0 the multiPicker pre-val might already exist in the db, but we've removed that setting in 7.0.1 so we need to detect it and if it is
+            /// there, then we'll set the maxNumber to '1'
+            /// </remarks>
+            public override IDictionary<string, object> ConvertDbToEditor(IDictionary<string, object> defaultPreVals, PreValueCollection persistedPreVals)
+            {
+                var result = base.ConvertDbToEditor(defaultPreVals, persistedPreVals);
+
+                //backwards compatibility check
+                if (result.ContainsKey("multiPicker") && result["multiPicker"].ToString() == "0")
+                {
+                    result["maxNumber"] = "1";
+                }
+
+                //set the multiPicker val correctly depending on the maxNumber
+                if (result.ContainsKey("maxNumber"))
+                {
+                    var asNumber = result["maxNumber"].TryConvertTo<int>();
+                    if (asNumber.Success)
+                    {
+                        if (asNumber.Result <= 1)
+                        {
+                            result["multiPicker"] = "0";
+                        }
+                        else
+                        {
+                            result["multiPicker"] = "1";
+                        }
+                    }
+                }
+
+
+                return result;
+            }
+
+        }
+    }
+}