feat(ui): migrate SymbolPicker into the components layer

Lifted out of Ui/ into Ui/Components and registered as a DI singleton so
the new InputBar can consume it via constructor injection. PUA tab still
sources from SeIconChar, BMP tab keeps the server-verified whitelist
verbatim. The old Ui/SymbolPicker.cs stays in place until the cleanup
block removes the v1.5.6 file.

HellionChat/PluginHostFactory.cs

@@ -134,6 +134,7 @@ internal static class PluginHostFactory
             sp.GetRequiredService<Ui.StyleEngine.TokenResolver>(),
             sp.GetRequiredService<FontManager>()
         ));
+        services.AddSingleton(_ => new Ui.Components.SymbolPicker());
         services.AddSingleton(sp => new Integrations.FailedTellNotifier(
             sp.GetRequiredService<ILogger<Integrations.FailedTellNotifier>>()
         ));

HellionChat/Ui/Components/SymbolPicker.cs

@@ -0,0 +1,294 @@
+using System.Numerics;
+using Dalamud.Bindings.ImGui;
+using Dalamud.Game.Text;
+using Dalamud.Interface.Utility.Raii;
+
+namespace HellionChat.Ui.Components;
+
+// Popup picker for chat-input symbol insertion. Two tabs:
+//   PUA  — Dalamud's SeIconChar enum (server-safe FFXIV glyphs)
+//   BMP  — server-verified Unicode symbols (whitelist probed via /echo + /say)
+//
+// Render-only — the visibility toggle for the trigger button lives on the
+// caller side (InputBar). Recent-Used is session state by design.
+internal sealed class SymbolPicker
+{
+    private const string PopupId = "HellionSymbolPicker";
+    private const int RecentCapacity = 16;
+
+    private string _search = string.Empty;
+    private readonly List<uint> _recentUsed = new(capacity: RecentCapacity);
+
+    // FFXIV server-safe BMP symbols, verified via /echo + /say. Filtered
+    // ranges live in the v1.4.10 BMP-Whitelist Notes for the original probe;
+    // the list stays inline so the picker has no external lookup table.
+    private static readonly (uint Codepoint, string Name)[] BmpWhitelist = new[]
+    {
+        (0x00A1u, "Inverted Exclamation"),
+        (0x00A2u, "Cent Sign"),
+        (0x00A3u, "Pound Sign"),
+        (0x00A4u, "Currency Sign"),
+        (0x00A5u, "Yen Sign"),
+        (0x00A7u, "Section Sign"),
+        (0x00A9u, "Copyright Sign"),
+        (0x00ABu, "Left Angle Quote"),
+        (0x00AEu, "Registered Sign"),
+        (0x00B0u, "Degree Sign"),
+        (0x00B1u, "Plus-Minus Sign"),
+        (0x00B6u, "Pilcrow Sign"),
+        (0x00BBu, "Right Angle Quote"),
+        (0x00BCu, "One Quarter"),
+        (0x00BDu, "One Half"),
+        (0x00BEu, "Three Quarters"),
+        (0x00BFu, "Inverted Question"),
+        (0x00D7u, "Multiplication Sign"),
+        (0x00F7u, "Division Sign"),
+        (0x0393u, "Greek Capital Gamma"),
+        (0x0394u, "Greek Capital Delta"),
+        (0x0398u, "Greek Capital Theta"),
+        (0x039Bu, "Greek Capital Lambda"),
+        (0x039Eu, "Greek Capital Xi"),
+        (0x03A0u, "Greek Capital Pi"),
+        (0x03A3u, "Greek Capital Sigma"),
+        (0x03A6u, "Greek Capital Phi"),
+        (0x03A8u, "Greek Capital Psi"),
+        (0x03A9u, "Greek Capital Omega"),
+        (0x03B1u, "Greek Small Alpha"),
+        (0x03B2u, "Greek Small Beta"),
+        (0x03B3u, "Greek Small Gamma"),
+        (0x03B4u, "Greek Small Delta"),
+        (0x03B5u, "Greek Small Epsilon"),
+        (0x03B6u, "Greek Small Zeta"),
+        (0x03B7u, "Greek Small Eta"),
+        (0x03B8u, "Greek Small Theta"),
+        (0x03B9u, "Greek Small Iota"),
+        (0x03BAu, "Greek Small Kappa"),
+        (0x03BBu, "Greek Small Lambda"),
+        (0x03BCu, "Greek Small Mu"),
+        (0x03BDu, "Greek Small Nu"),
+        (0x03BEu, "Greek Small Xi"),
+        (0x03BFu, "Greek Small Omicron"),
+        (0x03C0u, "Greek Small Pi"),
+        (0x03C1u, "Greek Small Rho"),
+        (0x03C3u, "Greek Small Sigma"),
+        (0x03C4u, "Greek Small Tau"),
+        (0x03C5u, "Greek Small Upsilon"),
+        (0x03C6u, "Greek Small Phi"),
+        (0x03C7u, "Greek Small Chi"),
+        (0x03C8u, "Greek Small Psi"),
+        (0x03C9u, "Greek Small Omega"),
+        (0x2013u, "En Dash"),
+        (0x2014u, "Em Dash"),
+        (0x2020u, "Dagger"),
+        (0x2021u, "Double Dagger"),
+        (0x2026u, "Horizontal Ellipsis"),
+        (0x203Bu, "Reference Mark"),
+        (0x20ACu, "Euro Sign"),
+        (0x2122u, "Trade Mark Sign"),
+        (0x2190u, "Leftwards Arrow"),
+        (0x2191u, "Upwards Arrow"),
+        (0x2192u, "Rightwards Arrow"),
+        (0x2193u, "Downwards Arrow"),
+        (0x21D2u, "Rightwards Double Arrow"),
+        (0x21D4u, "Left Right Double Arrow"),
+        (0x2202u, "Partial Differential"),
+        (0x2207u, "Nabla"),
+        (0x2211u, "Summation"),
+        (0x221Au, "Square Root"),
+        (0x221Eu, "Infinity"),
+        (0x222Bu, "Integral"),
+        (0x2260u, "Not Equal To"),
+        (0x25A0u, "Black Square"),
+        (0x25A1u, "White Square"),
+        (0x25B2u, "Black Up Triangle"),
+        (0x25B3u, "White Up Triangle"),
+        (0x25BCu, "Black Down Triangle"),
+        (0x25C6u, "Black Diamond"),
+        (0x25C7u, "White Diamond"),
+        (0x25CBu, "White Circle"),
+        (0x25CFu, "Black Circle"),
+        (0x2600u, "Black Sun With Rays"),
+        (0x2601u, "Cloud"),
+        (0x2602u, "Umbrella"),
+        (0x2603u, "Snowman"),
+        (0x2605u, "Black Star"),
+        (0x2606u, "White Star"),
+        (0x2640u, "Female Sign"),
+        (0x2642u, "Male Sign"),
+        (0x2660u, "Black Spade Suit"),
+        (0x2661u, "White Heart Suit"),
+        (0x2663u, "Black Club Suit"),
+        (0x2665u, "Black Heart Suit"),
+        (0x266Au, "Eighth Note"),
+        (0x2713u, "Check Mark"),
+    };
+
+    public void OpenPopup() => ImGui.OpenPopup(PopupId);
+
+    // Returns the inserted codepoint as a string fragment if the user clicked
+    // one this frame, or null otherwise. Caller splices the fragment into the
+    // chat-input buffer at the current cursor position.
+    public string? DrawAndConsume()
+    {
+        using var popup = ImRaii.Popup(PopupId);
+        if (!popup)
+            return null;
+
+        string? inserted = null;
+
+        if (_recentUsed.Count > 0)
+        {
+            ImGui.TextDisabled("Recent");
+            ImGui.SameLine();
+            foreach (var codepoint in _recentUsed)
+            {
+                var glyph = char.ConvertFromUtf32((int)codepoint);
+                if (
+                    ImGui.Selectable(
+                        glyph,
+                        false,
+                        ImGuiSelectableFlags.DontClosePopups,
+                        new Vector2(20, 20)
+                    )
+                )
+                {
+                    inserted = glyph;
+                }
+                ImGui.SameLine();
+            }
+            ImGui.NewLine();
+            ImGui.Separator();
+        }
+
+        using (var tabs = ImRaii.TabBar("##symbolpicker-tabs"))
+        {
+            if (tabs)
+            {
+                inserted = DrawPuaTab() ?? inserted;
+                inserted = DrawBmpTab() ?? inserted;
+            }
+        }
+
+        if (inserted is not null)
+            TrackRecent(inserted);
+
+        return inserted;
+    }
+
+    private string? DrawPuaTab()
+    {
+        using var tab = ImRaii.TabItem("FFXIV Icons");
+        if (!tab)
+            return null;
+
+        ImGui.InputTextWithHint(
+            "##pua-search",
+            "Search by name (e.g. HighQuality)",
+            ref _search,
+            64
+        );
+
+        string? inserted = null;
+
+        if (ImGui.BeginChild("##pua-grid", new Vector2(0, 280), false))
+        {
+            var query = _search;
+            foreach (var icon in Enum.GetValues<SeIconChar>())
+            {
+                var label = icon.ToString();
+                if (
+                    query.Length > 0
+                    && label.IndexOf(query, StringComparison.OrdinalIgnoreCase) < 0
+                )
+                    continue;
+
+                if (
+                    ImGui.Selectable(
+                        icon.ToIconString(),
+                        false,
+                        ImGuiSelectableFlags.DontClosePopups,
+                        new Vector2(24, 24)
+                    )
+                )
+                {
+                    inserted = icon.ToIconString();
+                }
+                if (ImGui.IsItemHovered())
+                    ImGui.SetTooltip(label);
+
+                // Manual wrap — GetWindowContentRegionMax was deprecated in
+                // ImGui 1.92, so we compute the right edge ourselves.
+                var style = ImGui.GetStyle();
+                var lastItemX2 = ImGui.GetItemRectMax().X;
+                var availableRightX =
+                    ImGui.GetCursorScreenPos().X + ImGui.GetContentRegionAvail().X;
+                if (lastItemX2 + style.ItemSpacing.X + 24f < availableRightX)
+                    ImGui.SameLine();
+            }
+        }
+        ImGui.EndChild();
+
+        return inserted;
+    }
+
+    private string? DrawBmpTab()
+    {
+        using var tab = ImRaii.TabItem("Symbols");
+        if (!tab)
+            return null;
+
+        ImGui.InputTextWithHint("##bmp-search", "Search by name (e.g. Heart)", ref _search, 64);
+
+        string? inserted = null;
+
+        if (ImGui.BeginChild("##bmp-grid", new Vector2(0, 280), false))
+        {
+            var query = _search;
+            foreach (var (codepoint, name) in BmpWhitelist)
+            {
+                if (query.Length > 0 && name.IndexOf(query, StringComparison.OrdinalIgnoreCase) < 0)
+                    continue;
+
+                var glyph = char.ConvertFromUtf32((int)codepoint);
+                if (
+                    ImGui.Selectable(
+                        glyph,
+                        false,
+                        ImGuiSelectableFlags.DontClosePopups,
+                        new Vector2(24, 24)
+                    )
+                )
+                {
+                    inserted = glyph;
+                }
+                if (ImGui.IsItemHovered())
+                    ImGui.SetTooltip(name);
+
+                var style = ImGui.GetStyle();
+                var lastItemX2 = ImGui.GetItemRectMax().X;
+                var availableRightX =
+                    ImGui.GetCursorScreenPos().X + ImGui.GetContentRegionAvail().X;
+                if (lastItemX2 + style.ItemSpacing.X + 24f < availableRightX)
+                    ImGui.SameLine();
+            }
+        }
+        ImGui.EndChild();
+
+        return inserted;
+    }
+
+    private void TrackRecent(string fragment)
+    {
+        if (string.IsNullOrEmpty(fragment) || fragment.Length > 4)
+            return;
+
+        var codepoint = (uint)char.ConvertToUtf32(fragment, 0);
+
+        // Move-to-front so the head stays the freshest pick.
+        _recentUsed.RemoveAll(c => c == codepoint);
+        _recentUsed.Insert(0, codepoint);
+
+        if (_recentUsed.Count > RecentCapacity)
+            _recentUsed.RemoveAt(_recentUsed.Count - 1);
+    }
+}