Data editor base: EntityEditorWindow (searchable list, form over JSON entities, texts in every language of the mod, other fields as JSON), EntityDocument, LocaleFileService, PropertiesText; mod tests

src/EntityEditor/PicturePickerDialog.cs

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+using System;
+using System.Linq;
+using Cthangover.Mods.Interface.Tool;
+using Cthangover.Tools.Common;
+using Cthangover.Tools.Services;
+using Godot;
+
+namespace Cthangover.Tools.EntityEditor
+{
+    /// <summary>
+    /// Grid of every picture of a file group with a search, for a picture field
+    /// of an entity form: a double click or OK picks one. The pictures are read
+    /// when the dialog opens, so a file just dropped into a mod folder shows up
+    /// (after the game re-reads its files: the editor's Save does that).
+    /// </summary>
+    public partial class PicturePickerDialog : AcceptDialog
+    {
+        private readonly FilteredList list;
+
+        /// <summary>A picture was picked: its id in the group.</summary>
+        public event Action<string> Picked;
+
+        /// <summary>Builds the dialog for the pictures of <paramref name="group"/>.</summary>
+        public PicturePickerDialog(string group, string current)
+        {
+            Theme = ToolTheme.Get();
+            Title = string.Format(ToolUi.Tr("tools/entity_editor/picture_pick_title"), group);
+            MinSize = new Vector2I(640, 520);
+            list = new FilteredList(420f);
+            list.UseIconGrid(64);
+            list.SetItems(ModResourceService.GetGroupImageIds(group)
+                .Select(id => (id, id.Substring(id.LastIndexOf('/') + 1), ModResourceService.LoadGroupImage(group, id))));
+            list.Select(current);
+            list.Activated += OnActivated;
+            AddChild(list);
+            Confirmed += OnConfirmed;
+            CloseRequested += QueueFree;
+            Canceled += QueueFree;
+        }
+
+        private void OnActivated(string id)
+        {
+            if (id == null)
+                return;
+            Picked?.Invoke(id);
+            Hide();
+            QueueFree();
+        }
+
+        private void OnConfirmed()
+        {
+            if (list.SelectedId != null)
+                Picked?.Invoke(list.SelectedId);
+            QueueFree();
+        }
+    }
+}