palette_editor.cc

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#include "palette_editor.h"
#include "util/i18n/tr.h"
 
#include <algorithm>
#include <functional>
 
#include "absl/status/status.h"
#include "absl/strings/str_cat.h"
#include "absl/strings/str_format.h"
#include "app/editor/palette/palette_category.h"
#include "app/editor/shell/feedback/toast_manager.h"
#include "app/editor/system/session/hack_manifest_save_validation.h"
#include "app/editor/system/workspace/workspace_window_manager.h"
#include "app/gfx/debug/performance/performance_profiler.h"
#include "app/gfx/types/snes_palette.h"
#include "app/gfx/util/palette_manager.h"
#include "app/gui/app/editor_layout.h"
#include "app/gui/automation/widget_auto_register.h"
#include "app/gui/canvas/item_context_menu.h"
#include "app/gui/core/color.h"
#include "app/gui/core/icons.h"
#include "app/gui/core/popup_id.h"
#include "app/gui/core/search.h"
#include "app/gui/core/style_guard.h"
#include "app/gui/core/theme_manager.h"
#include "app/gui/core/ui_helpers.h"
#include "app/gui/widgets/themed_widgets.h"
#include "core/project.h"
#include "imgui/imgui.h"
#include "util/macro.h"
 
#include <cstring>
 
namespace yaze {
namespace editor {
 
using ImGui::AcceptDragDropPayload;
using ImGui::BeginChild;
using ImGui::BeginDragDropTarget;
using ImGui::BeginGroup;
using ImGui::BeginPopup;
using ImGui::BeginPopupContextItem;
using ImGui::Button;
using ImGui::ColorButton;
using ImGui::ColorPicker4;
using ImGui::EndChild;
using ImGui::EndDragDropTarget;
using ImGui::EndGroup;
using ImGui::EndPopup;
using ImGui::GetStyle;
using ImGui::OpenPopup;
using ImGui::PopID;
using ImGui::PushID;
using ImGui::SameLine;
using ImGui::Selectable;
using ImGui::Separator;
using ImGui::SetClipboardText;
using ImGui::Text;
 
using namespace gfx;
 
constexpr ImGuiTableFlags kPaletteTableFlags =
    ImGuiTableFlags_Reorderable | ImGuiTableFlags_Resizable |
    ImGuiTableFlags_SizingStretchSame | ImGuiTableFlags_Hideable;
 
constexpr ImGuiColorEditFlags kPalNoAlpha = ImGuiColorEditFlags_NoAlpha;
 
constexpr ImGuiColorEditFlags kPalButtonFlags = ImGuiColorEditFlags_NoAlpha |
                                                ImGuiColorEditFlags_NoPicker |
                                                ImGuiColorEditFlags_NoTooltip;
 
constexpr ImGuiColorEditFlags kColorPopupFlags =
    ImGuiColorEditFlags_NoInputs | ImGuiColorEditFlags_NoAlpha |
    ImGuiColorEditFlags_DisplayRGB | ImGuiColorEditFlags_DisplayHSV |
    ImGuiColorEditFlags_DisplayHex;
 
namespace {
void DrawColorDropTargetOutline(ImVec2 min, ImVec2 max) {
  const auto& theme = gui::ThemeManager::Get().GetCurrentTheme();
  ImGui::GetForegroundDrawList()->AddRect(
      min, max, ImGui::GetColorU32(gui::ConvertColorToImVec4(theme.accent)),
      0.0f, 2.0f);
}
 
bool AcceptImGuiColorDrop(SnesColor* color, ImVec2 min, ImVec2 max) {
  if (!color || !BeginDragDropTarget()) {
    return false;
  }
 
  bool changed = false;
  constexpr ImGuiDragDropFlags kFlags =
      ImGuiDragDropFlags_AcceptBeforeDelivery |
      ImGuiDragDropFlags_AcceptNoDrawDefaultRect |
      ImGuiDragDropFlags_AcceptNoPreviewTooltip;
  auto accept = [&](const char* type, size_t components) {
    if (changed) {
      return;
    }
    if (const ImGuiPayload* payload = AcceptDragDropPayload(type, kFlags)) {
      DrawColorDropTargetOutline(min, max);
      if (payload->IsDelivery()) {
        ImVec4 dropped(0, 0, 0, 1);
        std::memcpy(&dropped.x, payload->Data, sizeof(float) * components);
        if (components == 3) {
          dropped.w = 1.0f;
        }
        *color = SnesColor(dropped);
        changed = true;
      }
    }
  };
 
  accept(IMGUI_PAYLOAD_TYPE_COLOR_3F, 3);
  accept(IMGUI_PAYLOAD_TYPE_COLOR_4F, 4);
  EndDragDropTarget();
  return changed;
}
 
int CustomFormatString(char* buf, size_t buf_size, const char* fmt, ...) {
  va_list args;
  va_start(args, fmt);
#ifdef IMGUI_USE_STB_SPRINTF
  int w = stbsp_vsnprintf(buf, (int)buf_size, fmt, args);
#else
  int w = vsnprintf(buf, buf_size, fmt, args);
#endif
  va_end(args);
  if (buf == nullptr)
    return w;
  if (w == -1 || w >= (int)buf_size)
    w = (int)buf_size - 1;
  buf[w] = 0;
  return w;
}
 
static inline float color_saturate(float f) {
  return (f < 0.0f) ? 0.0f : (f > 1.0f) ? 1.0f : f;
}
 
#define F32_TO_INT8_SAT(_VAL)            \
  ((int)(color_saturate(_VAL) * 255.0f + \
         0.5f))  // Saturated, always output 0..255
 
// Right-click menu for a custom palette swatch. Returns true when the color
// was removed; the caller must stop using `index` for this frame.
bool DrawCustomColorContextMenu(
    std::vector<gfx::SnesColor>& colors, int index,
    const std::function<void(const gfx::SnesColor&)>& on_edited) {
  if (!BeginPopupContextItem()) {
    return false;
  }
  // Edit color directly in the popup
  if (gui::SnesColorEdit4("Edit Color", &colors[index], kColorPopupFlags)) {
    on_edited(colors[index]);
  }
  Separator();
  gui::SnesColorCopyMenuItems(colors[index]);
  Separator();
  bool removed = false;
  gui::RenderMenuItem(gui::MenuItemSpec::Destructive(
      "Remove from Custom Palette", ICON_MD_DELETE,
      [&removed]() { removed = true; },
      /*confirm=*/false));
  EndPopup();
  if (removed) {
    colors.erase(colors.begin() + index);
  }
  return removed;
}
}  // namespace
 
absl::Status DisplayPalette(gfx::SnesPalette& palette, bool loaded) {
  static ImVec4 color = ImVec4(0, 0, 0, 1.0f);
  static ImVec4 current_palette[256] = {};
  static int current_palette_count = 0;
  ImGuiColorEditFlags misc_flags = ImGuiColorEditFlags_AlphaPreview |
                                   ImGuiColorEditFlags_NoDragDrop |
                                   ImGuiColorEditFlags_NoOptions;
 
  // Reload palette colors whenever the palette data is available.
  if (loaded) {
    current_palette_count =
        std::min<int>(static_cast<int>(palette.size()),
                      static_cast<int>(IM_ARRAYSIZE(current_palette)));
 
    for (int n = 0; n < current_palette_count; ++n) {
      const auto palette_color = palette[static_cast<size_t>(n)];
      current_palette[n].x = palette_color.rgb().x / 255.0f;
      current_palette[n].y = palette_color.rgb().y / 255.0f;
      current_palette[n].z = palette_color.rgb().z / 255.0f;
      current_palette[n].w = 1.0f;
    }
    for (int n = current_palette_count;
         n < static_cast<int>(IM_ARRAYSIZE(current_palette)); ++n) {
      current_palette[n] = ImVec4(0, 0, 0, 1.0f);
    }
  } else {
    current_palette_count = 0;
  }
 
  static ImVec4 backup_color;
  bool open_popup = ColorButton("MyColor##3b", color, misc_flags);
  SameLine(0, GetStyle().ItemInnerSpacing.x);
  open_popup |= Button(tr("Palette"));
  if (open_popup) {
    OpenPopup(gui::MakePopupId(gui::EditorNames::kPalette,
                               gui::PopupNames::kColorPicker)
                  .c_str());
    backup_color = color;
  }
 
  if (BeginPopup(gui::MakePopupId(gui::EditorNames::kPalette,
                                  gui::PopupNames::kColorPicker)
                     .c_str())) {
    TEXT_WITH_SEPARATOR("Current Overworld Palette");
    ColorPicker4("##picker", (float*)&color,
                 misc_flags | ImGuiColorEditFlags_NoSidePreview |
                     ImGuiColorEditFlags_NoSmallPreview);
    SameLine();
 
    BeginGroup();  // Lock X position
    Text(tr("Current ==>"));
    SameLine();
    Text(tr("Previous"));
 
    if (Button(tr("Update Map Palette"))) {}
 
    ColorButton(
        "##current", color,
        ImGuiColorEditFlags_NoPicker | ImGuiColorEditFlags_AlphaPreviewHalf,
        ImVec2(60, 40));
    SameLine();
 
    if (ColorButton(
            "##previous", backup_color,
            ImGuiColorEditFlags_NoPicker | ImGuiColorEditFlags_AlphaPreviewHalf,
            ImVec2(60, 40)))
      color = backup_color;
 
    // List of Colors in Overworld Palette
    Separator();
    Text(tr("Palette"));
    if (current_palette_count <= 0) {
      ImGui::TextDisabled(tr("No palette entries loaded."));
    }
    for (int n = 0; n < current_palette_count; n++) {
      PushID(n);
      if ((n % 8) != 0)
        SameLine(0.0f, GetStyle().ItemSpacing.y);
 
      if (ColorButton("##palette", current_palette[n], kPalButtonFlags,
                      ImVec2(20, 20)))
        color = ImVec4(current_palette[n].x, current_palette[n].y,
                       current_palette[n].z, color.w);  // Preserve alpha!
 
      if (BeginDragDropTarget()) {
        if (const ImGuiPayload* payload =
                AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_3F))
          memcpy((float*)&current_palette[n], payload->Data, sizeof(float) * 3);
        if (const ImGuiPayload* payload =
                AcceptDragDropPayload(IMGUI_PAYLOAD_TYPE_COLOR_4F))
          memcpy((float*)&current_palette[n], payload->Data, sizeof(float) * 4);
        EndDragDropTarget();
      }
 
      PopID();
    }
    EndGroup();
    EndPopup();
  }
 
  return absl::OkStatus();
}
 
void PaletteEditor::Initialize() {
  // Register all panels with WorkspaceWindowManager (done once during
  // initialization)
  if (!dependencies_.window_manager)
    return;
  auto* window_manager = dependencies_.window_manager;
  const size_t session_id = dependencies_.session_id;
 
  window_manager->RegisterPanel(
      {.card_id = "palette.control_panel",
       .display_name = "Palette",
       .window_title = " Palette",
       .icon = ICON_MD_PALETTE,
       .category = "Palette",
       .presentation = WindowPresentationPolicy::CoreWorkspace(),
       .shortcut_hint = "Ctrl+Shift+P",
       .visibility_flag = &show_control_panel_,
       .priority = 10,
       .enabled_condition = [this]() { return rom_ && rom_->is_loaded(); },
       .disabled_tooltip = "Load a ROM first"});
 
  window_manager->RegisterPanel(
      {.card_id = "palette.ow_main",
       .display_name = "Overworld Main",
       .window_title = " Overworld Main",
       .icon = ICON_MD_LANDSCAPE,
       .category = "Palette",
       .presentation = WindowPresentationPolicy::OptionalPopOut(),
       .shortcut_hint = "Ctrl+Alt+1",
       .visibility_flag = &show_ow_main_panel_,
       .priority = 20,
       .enabled_condition = [this]() { return rom_ && rom_->is_loaded(); },
       .disabled_tooltip = "Load a ROM first"});
 
  window_manager->RegisterPanel(
      {.card_id = "palette.ow_animated",
       .display_name = "Overworld Animated",
       .window_title = " Overworld Animated",
       .icon = ICON_MD_WATER,
       .category = "Palette",
       .presentation = WindowPresentationPolicy::OptionalPopOut(),
       .shortcut_hint = "Ctrl+Alt+2",
       .visibility_flag = &show_ow_animated_panel_,
       .priority = 30,
       .enabled_condition = [this]() { return rom_ && rom_->is_loaded(); },
       .disabled_tooltip = "Load a ROM first"});
 
  window_manager->RegisterPanel(
      {.card_id = "palette.dungeon_main",
       .display_name = "Dungeon Main",
       .window_title = " Dungeon Main",
       .icon = ICON_MD_CASTLE,
       .category = "Palette",
       .presentation = WindowPresentationPolicy::OptionalPopOut(),
       .shortcut_hint = "Ctrl+Alt+3",
       .visibility_flag = &show_dungeon_main_panel_,
       .priority = 40,
       .enabled_condition = [this]() { return rom_ && rom_->is_loaded(); },
       .disabled_tooltip = "Load a ROM first"});
 
  window_manager->RegisterPanel(
      {.card_id = "palette.sprites",
       .display_name = "Global Sprite Palettes",
       .window_title = " SNES Palette",
       .icon = ICON_MD_PETS,
       .category = "Palette",
       .presentation = WindowPresentationPolicy::OptionalPopOut(),
       .shortcut_hint = "Ctrl+Alt+4",
       .visibility_flag = &show_sprite_panel_,
       .priority = 50,
       .enabled_condition = [this]() { return rom_ && rom_->is_loaded(); },
       .disabled_tooltip = "Load a ROM first"});
 
  window_manager->RegisterPanel(
      {.card_id = "palette.sprites_aux1",
       .display_name = "Sprites Aux 1",
       .window_title = " Sprites Aux 1",
       .icon = ICON_MD_FILTER_1,
       .category = "Palette",
       .presentation = WindowPresentationPolicy::OptionalPopOut(),
       .shortcut_hint = "Ctrl+Alt+7",
       .visibility_flag = &show_sprites_aux1_panel_,
       .priority = 51,
       .enabled_condition = [this]() { return rom_ && rom_->is_loaded(); },
       .disabled_tooltip = "Load a ROM first"});
 
  window_manager->RegisterPanel(
      {.card_id = "palette.sprites_aux2",
       .display_name = "Sprites Aux 2",
       .window_title = " Sprites Aux 2",
       .icon = ICON_MD_FILTER_2,
       .category = "Palette",
       .presentation = WindowPresentationPolicy::OptionalPopOut(),
       .shortcut_hint = "Ctrl+Alt+8",
       .visibility_flag = &show_sprites_aux2_panel_,
       .priority = 52,
       .enabled_condition = [this]() { return rom_ && rom_->is_loaded(); },
       .disabled_tooltip = "Load a ROM first"});
 
  window_manager->RegisterPanel(
      {.card_id = "palette.sprites_aux3",
       .display_name = "Sprites Aux 3",
       .window_title = " Sprites Aux 3",
       .icon = ICON_MD_FILTER_3,
       .category = "Palette",
       .presentation = WindowPresentationPolicy::OptionalPopOut(),
       .shortcut_hint = "Ctrl+Alt+9",
       .visibility_flag = &show_sprites_aux3_panel_,
       .priority = 53,
       .enabled_condition = [this]() { return rom_ && rom_->is_loaded(); },
       .disabled_tooltip = "Load a ROM first"});
 
  window_manager->RegisterPanel(
      {.card_id = "palette.equipment",
       .display_name = "Equipment Palettes",
       .window_title = " Equipment Palettes",
       .icon = ICON_MD_SHIELD,
       .category = "Palette",
       .presentation = WindowPresentationPolicy::OptionalPopOut(),
       .shortcut_hint = "Ctrl+Alt+5",
       .visibility_flag = &show_equipment_panel_,
       .priority = 60,
       .enabled_condition = [this]() { return rom_ && rom_->is_loaded(); },
       .disabled_tooltip = "Load a ROM first"});
 
  window_manager->RegisterPanel(
      {.card_id = "palette.quick_access",
       .display_name = "Quick Access",
       .window_title = " Color Harmony",
       .icon = ICON_MD_COLOR_LENS,
       .category = "Palette",
       .presentation = WindowPresentationPolicy::OptionalPopOut(),
       .shortcut_hint = "Ctrl+Alt+Q",
       .visibility_flag = &show_quick_access_,
       .priority = 70,
       .enabled_condition = [this]() { return rom_ && rom_->is_loaded(); },
       .disabled_tooltip = "Load a ROM first"});
 
  window_manager->RegisterPanel(
      {.card_id = "palette.custom",
       .display_name = "Custom Palette",
       .window_title = " Palette Editor",
       .icon = ICON_MD_BRUSH,
       .category = "Palette",
       .presentation = WindowPresentationPolicy::OptionalPopOut(),
       .shortcut_hint = "Ctrl+Alt+C",
       .visibility_flag = &show_custom_palette_,
       .priority = 80,
       .enabled_condition = [this]() { return rom_ && rom_->is_loaded(); },
       .disabled_tooltip = "Load a ROM first"});
 
  // Show control panel by default when Palette Editor is activated
  window_manager->OpenWindow(session_id, "palette.control_panel");
}
 
// ============================================================================
// Helper Panel Classes
// ============================================================================
 
class PaletteControlPanel : public WindowContent {
 public:
  explicit PaletteControlPanel(std::function<void()> draw_callback)
      : draw_callback_(std::move(draw_callback)) {}
 
  std::string GetId() const override { return "palette.control_panel"; }
  std::string GetDisplayName() const override { return "Palette"; }
  std::string GetIcon() const override { return ICON_MD_PALETTE; }
  std::string GetEditorCategory() const override { return "Palette"; }
  WindowPresentationPolicy GetPresentationPolicy() const override {
    return WindowPresentationPolicy::CoreWorkspace();
  }
  int GetPriority() const override { return 10; }
  float GetPreferredWidth() const override { return 900.0f; }
 
  void Draw(bool* p_open) override {
    if (p_open && !*p_open)
      return;
    if (draw_callback_)
      draw_callback_();
  }
 
 private:
  std::function<void()> draw_callback_;
};
 
class QuickAccessPalettePanel : public WindowContent {
 public:
  explicit QuickAccessPalettePanel(std::function<void()> draw_callback)
      : draw_callback_(std::move(draw_callback)) {}
 
  std::string GetId() const override { return "palette.quick_access"; }
  std::string GetDisplayName() const override { return "Quick Access"; }
  std::string GetIcon() const override { return ICON_MD_COLOR_LENS; }
  std::string GetEditorCategory() const override { return "Palette"; }
  WindowPresentationPolicy GetPresentationPolicy() const override {
    return WindowPresentationPolicy::OptionalPopOut();
  }
  int GetPriority() const override { return 70; }
  float GetPreferredWidth() const override { return 340.0f; }
 
  void Draw(bool* p_open) override {
    if (p_open && !*p_open)
      return;
    if (draw_callback_)
      draw_callback_();
  }
 
 private:
  std::function<void()> draw_callback_;
};
 
class CustomPalettePanel : public WindowContent {
 public:
  explicit CustomPalettePanel(std::function<void()> draw_callback)
      : draw_callback_(std::move(draw_callback)) {}
 
  std::string GetId() const override { return "palette.custom"; }
  std::string GetDisplayName() const override { return "Custom Palette"; }
  std::string GetIcon() const override { return ICON_MD_BRUSH; }
  std::string GetEditorCategory() const override { return "Palette"; }
  WindowPresentationPolicy GetPresentationPolicy() const override {
    return WindowPresentationPolicy::OptionalPopOut();
  }
  int GetPriority() const override { return 80; }
  float GetPreferredWidth() const override { return 420.0f; }
 
  void Draw(bool* p_open) override {
    if (p_open && !*p_open)
      return;
    if (draw_callback_)
      draw_callback_();
  }
 
 private:
  std::function<void()> draw_callback_;
};
 
void PaletteEditor::SetDependencies(const EditorDependencies& deps) {
  Editor::SetDependencies(deps);
  RefreshPaletteCatalogIfChanged();
  ApplyPanelDependencies();
}
 
namespace {
template <typename Panel>
Panel* ResolveSessionPalettePanel(WorkspaceWindowManager* window_manager,
                                  size_t session_id, const char* panel_id,
                                  Rom* rom) {
  auto* panel = dynamic_cast<Panel*>(
      window_manager->GetWindowContent(session_id, panel_id));
  return panel != nullptr && panel->IsOwnedByRom(rom) ? panel : nullptr;
}
}  // namespace
 
void PaletteEditor::RefreshPanelReferences() {
  auto* window_manager = dependencies_.window_manager;
  if (window_manager == nullptr) {
    ow_main_panel_ = nullptr;
    ow_anim_panel_ = nullptr;
    dungeon_main_panel_ = nullptr;
    sprite_global_panel_ = nullptr;
    sprite_aux1_panel_ = nullptr;
    sprite_aux2_panel_ = nullptr;
    sprite_aux3_panel_ = nullptr;
    equipment_panel_ = nullptr;
    return;
  }
 
  const size_t session_id = dependencies_.session_id;
  ow_main_panel_ = ResolveSessionPalettePanel<OverworldMainPalettePanel>(
      window_manager, session_id, "palette.ow_main", rom_);
  ow_anim_panel_ = ResolveSessionPalettePanel<OverworldAnimatedPalettePanel>(
      window_manager, session_id, "palette.ow_animated", rom_);
  dungeon_main_panel_ = ResolveSessionPalettePanel<DungeonMainPalettePanel>(
      window_manager, session_id, "palette.dungeon_main", rom_);
  sprite_global_panel_ = ResolveSessionPalettePanel<SpritePalettePanel>(
      window_manager, session_id, "palette.global_sprites", rom_);
  sprite_aux1_panel_ = ResolveSessionPalettePanel<SpritesAux1PalettePanel>(
      window_manager, session_id, "palette.sprites_aux1", rom_);
  sprite_aux2_panel_ = ResolveSessionPalettePanel<SpritesAux2PalettePanel>(
      window_manager, session_id, "palette.sprites_aux2", rom_);
  sprite_aux3_panel_ = ResolveSessionPalettePanel<SpritesAux3PalettePanel>(
      window_manager, session_id, "palette.sprites_aux3", rom_);
  equipment_panel_ = ResolveSessionPalettePanel<EquipmentPalettePanel>(
      window_manager, session_id, "palette.armors", rom_);
}
 
void PaletteEditor::ApplyPanelDependencies() {
  // WorkspaceWindowManager owns these panels and may have already destroyed
  // them while the session-close event is still rebinding editor dependencies.
  RefreshPanelReferences();
  const auto apply = [this](PaletteGroupPanel* panel) {
    if (panel == nullptr) {
      return;
    }
    panel->SetToastManager(dependencies_.toast_manager);
    panel->SetProject(dependencies_.project);
  };
  apply(ow_main_panel_);
  apply(ow_anim_panel_);
  apply(dungeon_main_panel_);
  apply(sprite_global_panel_);
  apply(sprite_aux1_panel_);
  apply(sprite_aux2_panel_);
  apply(sprite_aux3_panel_);
  apply(equipment_panel_);
}
 
absl::Status PaletteEditor::Load() {
  gfx::ScopedTimer timer("PaletteEditor::Load");
 
  if (!rom() || !rom()->is_loaded()) {
    return absl::NotFoundError("ROM not open, no palettes to display");
  }
 
  // Initialize the labels
  for (int i = 0; i < kNumPalettes; i++) {
    rom()->resource_label()->CreateOrGetLabel(
        "Palette Group Name", std::to_string(i),
        std::string(kPaletteGroupNames[i]));
  }
 
  // Initialize the centralized PaletteManager with GameData
  // This must be done before creating any palette cards
  if (game_data()) {
    gfx::PaletteManager::Get().Initialize(game_data());
  } else {
    // Fallback to legacy ROM-only initialization
    gfx::PaletteManager::Get().Initialize(rom_);
  }
 
  // Register WindowContent instances with WorkspaceWindowManager
  if (dependencies_.window_manager) {
    auto* window_manager = dependencies_.window_manager;
 
    // Create and register palette panels
    // Note: WorkspaceWindowManager takes ownership via unique_ptr
 
    // Overworld Main
    auto ow_main =
        std::make_unique<OverworldMainPalettePanel>(rom_, game_data());
    ow_main_panel_ = ow_main.get();
    window_manager->RegisterWindowContent(std::move(ow_main));
 
    // Overworld Animated
    auto ow_anim =
        std::make_unique<OverworldAnimatedPalettePanel>(rom_, game_data());
    ow_anim_panel_ = ow_anim.get();
    window_manager->RegisterWindowContent(std::move(ow_anim));
 
    // Dungeon Main
    auto dungeon_main =
        std::make_unique<DungeonMainPalettePanel>(rom_, game_data());
    dungeon_main_panel_ = dungeon_main.get();
    window_manager->RegisterWindowContent(std::move(dungeon_main));
 
    // Global Sprites
    auto sprite_global =
        std::make_unique<SpritePalettePanel>(rom_, game_data());
    sprite_global_panel_ = sprite_global.get();
    window_manager->RegisterWindowContent(std::move(sprite_global));
 
    // Sprites Aux 1
    auto sprite_aux1 =
        std::make_unique<SpritesAux1PalettePanel>(rom_, game_data());
    sprite_aux1_panel_ = sprite_aux1.get();
    window_manager->RegisterWindowContent(std::move(sprite_aux1));
 
    // Sprites Aux 2
    auto sprite_aux2 =
        std::make_unique<SpritesAux2PalettePanel>(rom_, game_data());
    sprite_aux2_panel_ = sprite_aux2.get();
    window_manager->RegisterWindowContent(std::move(sprite_aux2));
 
    // Sprites Aux 3
    auto sprite_aux3 =
        std::make_unique<SpritesAux3PalettePanel>(rom_, game_data());
    sprite_aux3_panel_ = sprite_aux3.get();
    window_manager->RegisterWindowContent(std::move(sprite_aux3));
 
    // Equipment
    auto equipment = std::make_unique<EquipmentPalettePanel>(rom_, game_data());
    equipment_panel_ = equipment.get();
    window_manager->RegisterWindowContent(std::move(equipment));
 
    ApplyPanelDependencies();
 
    // Register utility panels with callbacks
    window_manager->RegisterWindowContent(std::make_unique<PaletteControlPanel>(
        [this]() { DrawControlPanel(); }));
    window_manager->RegisterWindowContent(
        std::make_unique<QuickAccessPalettePanel>(
            [this]() { DrawQuickAccessPanel(); }));
    window_manager->RegisterWindowContent(std::make_unique<CustomPalettePanel>(
        [this]() { DrawCustomPalettePanel(); }));
  }
 
  return absl::OkStatus();
}
 
absl::Status PaletteEditor::BeginSaveTransaction() {
  auto& manager = gfx::PaletteManager::Get();
  if (!game_data() || !manager.IsManaging(game_data())) {
    return absl::FailedPreconditionError(
        "Cannot save palettes from an inactive ROM session");
  }
  return manager.BeginSaveTransaction();
}
 
void PaletteEditor::RollbackSaveTransaction() {
  gfx::PaletteManager::Get().RollbackSaveTransaction();
}
 
void PaletteEditor::CommitSaveTransaction() {
  gfx::PaletteManager::Get().CommitSaveTransaction();
}
 
absl::Status PaletteEditor::Save() {
  if (!rom_ || !rom_->is_loaded()) {
    return absl::FailedPreconditionError("ROM not loaded");
  }
  if (!game_data() || !gfx::PaletteManager::Get().IsManaging(game_data())) {
    return absl::FailedPreconditionError(
        "Cannot save palettes from an inactive ROM session");
  }
 
  auto& palette_manager = gfx::PaletteManager::Get();
  ASSIGN_OR_RETURN(const auto ranges,
                   palette_manager.GetModifiedColorWriteRanges(game_data()));
  if (dependencies_.project != nullptr &&
      dependencies_.project->hack_manifest.loaded()) {
    if (!ranges.empty()) {
      RETURN_IF_ERROR(ValidateHackManifestSaveConflicts(
          dependencies_.project->hack_manifest,
          dependencies_.project->rom_metadata.write_policy, ranges, "palettes",
          "PaletteEditor", dependencies_.toast_manager));
    }
  }
 
  // Delegate to PaletteManager for centralized save.
  RETURN_IF_ERROR(palette_manager.SaveAllToRom());
 
  // Mark ROM as needing file save
  rom_->set_dirty(true);
 
  return absl::OkStatus();
}
 
bool PaletteEditor::CanUndo() const {
  const auto& manager = gfx::PaletteManager::Get();
  return game_data() && manager.IsManaging(game_data()) && manager.CanUndo();
}
 
bool PaletteEditor::CanRedo() const {
  const auto& manager = gfx::PaletteManager::Get();
  return game_data() && manager.IsManaging(game_data()) && manager.CanRedo();
}
 
absl::Status PaletteEditor::Undo() {
  if (!game_data() || !gfx::PaletteManager::Get().IsManaging(game_data())) {
    return absl::FailedPreconditionError(
        "Cannot undo palettes from an inactive ROM session");
  }
 
  gfx::PaletteManager::Get().Undo();
  return absl::OkStatus();
}
 
absl::Status PaletteEditor::Redo() {
  if (!game_data() || !gfx::PaletteManager::Get().IsManaging(game_data())) {
    return absl::FailedPreconditionError(
        "Cannot redo palettes from an inactive ROM session");
  }
 
  gfx::PaletteManager::Get().Redo();
  return absl::OkStatus();
}
 
absl::Status PaletteEditor::Update() {
  // Panel drawing is handled centrally by WorkspaceWindowManager::DrawAllVisiblePanels()
  // via the WindowContent implementations registered in Load().
  // No local drawing needed here - this fixes duplicate panel rendering.
  return absl::OkStatus();
}
 
void PaletteEditor::DrawQuickAccessTab() {
  BeginChild("QuickAccessPalettes", ImVec2(0, 0), true);
 
  Text(tr("Custom Palette"));
  DrawCustomPalette();
 
  Separator();
 
  // Current color picker with more options
  BeginGroup();
  Text(tr("Current Color"));
  gui::SnesColorEdit4("##CurrentColorPicker", &current_color_,
                      kColorPopupFlags);
 
  char buf[64];
  auto col = current_color_.rgb();
  int cr = F32_TO_INT8_SAT(col.x / 255.0f);
  int cg = F32_TO_INT8_SAT(col.y / 255.0f);
  int cb = F32_TO_INT8_SAT(col.z / 255.0f);
 
  CustomFormatString(buf, IM_ARRAYSIZE(buf), "RGB: %d, %d, %d", cr, cg, cb);
  Text("%s", buf);
 
  CustomFormatString(buf, IM_ARRAYSIZE(buf), "SNES: $%04X",
                     current_color_.snes());
  Text("%s", buf);
 
  if (Button(tr("Copy to Clipboard"))) {
    SetClipboardText(buf);
  }
  EndGroup();
 
  Separator();
 
  // Recently used colors
  Text(tr("Recently Used Colors"));
  for (int i = 0; i < recently_used_colors_.size(); i++) {
    PushID(i);
    if (i % 8 != 0)
      SameLine();
    ImVec4 displayColor =
        gui::ConvertSnesColorToImVec4(recently_used_colors_[i]);
    if (ImGui::ColorButton("##recent", displayColor)) {
      // Set as current color
      current_color_ = recently_used_colors_[i];
    }
    PopID();
  }
 
  EndChild();
}
 
void PaletteEditor::DrawCustomPalette() {
  if (BeginChild("ColorPalette", ImVec2(0, 40), ImGuiChildFlags_None,
                 ImGuiWindowFlags_HorizontalScrollbar)) {
    for (int i = 0; i < custom_palette_.size(); i++) {
      PushID(i);
      if (i > 0)
        SameLine(0.0f, GetStyle().ItemSpacing.y);
 
      // Enhanced color button with context menu and drag-drop support
      ImVec4 displayColor = gui::ConvertSnesColorToImVec4(custom_palette_[i]);
      bool open_color_picker = ImGui::ColorButton(
          absl::StrFormat("##customPal%d", i).c_str(), displayColor);
      const ImVec2 swatch_min = ImGui::GetItemRectMin();
      const ImVec2 swatch_max = ImGui::GetItemRectMax();
      if (ImGui::IsItemHovered() &&
          ImGui::IsMouseDoubleClicked(ImGuiMouseButton_Left)) {
        open_color_picker = true;
      }
 
      if (open_color_picker) {
        current_color_ = custom_palette_[i];
        edit_palette_index_ = i;
        ImGui::OpenPopup(gui::MakePopupId(gui::EditorNames::kPalette,
                                          "CustomPaletteColorEdit")
                             .c_str());
      }
 
      if (DrawCustomColorContextMenu(
              custom_palette_, i,
              [this](const SnesColor& c) { AddRecentlyUsedColor(c); })) {
        PopID();
        break;
      }
 
      if (AcceptImGuiColorDrop(&custom_palette_[i], swatch_min, swatch_max)) {
        AddRecentlyUsedColor(custom_palette_[i]);
      }
 
      PopID();
    }
 
    SameLine();
    if (ImGui::Button("+")) {
      custom_palette_.push_back(SnesColor(0x7FFF));
    }
 
    SameLine();
    if (ImGui::Button(tr("Clear"))) {
      custom_palette_.clear();
    }
 
    SameLine();
    if (ImGui::Button(tr("Export"))) {
      std::string clipboard;
      for (const auto& color : custom_palette_) {
        clipboard += absl::StrFormat("$%04X,", color.snes());
      }
      SetClipboardText(clipboard.c_str());
    }
  }
  EndChild();
 
  // Color picker popup for custom palette editing
  if (ImGui::BeginPopup(
          gui::MakePopupId(gui::EditorNames::kPalette, "CustomPaletteColorEdit")
              .c_str())) {
    if (edit_palette_index_ >= 0 &&
        edit_palette_index_ < custom_palette_.size()) {
      SnesColor original_color = custom_palette_[edit_palette_index_];
      if (gui::SnesColorEdit4(
              "Edit Color", &custom_palette_[edit_palette_index_],
              kColorPopupFlags | ImGuiColorEditFlags_PickerHueWheel)) {
        // Color was changed, add to recently used
        AddRecentlyUsedColor(custom_palette_[edit_palette_index_]);
      }
    }
    ImGui::EndPopup();
  }
}
 
absl::Status PaletteEditor::DrawPaletteGroup(int category,
                                             bool /*right_side*/) {
  if (!rom()->is_loaded() || !game_data()) {
    return absl::NotFoundError("ROM not open, no palettes to display");
  }
 
  auto palette_group_name = kPaletteGroupNames[category];
  gfx::PaletteGroup* palette_group =
      game_data()->palette_groups.get_group(palette_group_name.data());
  const auto size = palette_group->size();
 
  for (int j = 0; j < size; j++) {
    gfx::SnesPalette* palette = palette_group->mutable_palette(j);
    auto pal_size = palette->size();
 
    BeginGroup();
 
    PushID(j);
    BeginGroup();
    rom()->resource_label()->SelectableLabelWithNameEdit(
        false, palette_group_name.data(), /*key=*/std::to_string(j),
        "Unnamed Palette");
    EndGroup();
 
    for (int n = 0; n < pal_size; n++) {
      PushID(n);
      if (n > 0 && n % 8 != 0)
        SameLine(0.0f, 2.0f);
 
      auto popup_id =
          absl::StrCat(kPaletteCategoryNames[category].data(), j, "_", n);
 
      ImVec4 displayColor = gui::ConvertSnesColorToImVec4((*palette)[n]);
      if (ImGui::ColorButton(popup_id.c_str(), displayColor)) {
        current_color_ = (*palette)[n];
        AddRecentlyUsedColor(current_color_);
      }
      const ImVec2 swatch_min = ImGui::GetItemRectMin();
      const ImVec2 swatch_max = ImGui::GetItemRectMax();
      if (ImGui::IsItemHovered() &&
          ImGui::IsMouseDoubleClicked(ImGuiMouseButton_Left)) {
        current_color_ = (*palette)[n];
        AddRecentlyUsedColor(current_color_);
        OpenPopup(popup_id.c_str());
      }
      {
        const SnesColor original_color = (*palette)[n];
        if (AcceptImGuiColorDrop(&(*palette)[n], swatch_min, swatch_max)) {
          history_.RecordChange(
              /*group_name=*/std::string(kPaletteGroupNames[category]),
              /*palette_index=*/j, /*color_index=*/n, original_color,
              (*palette)[n]);
          (*palette)[n].set_modified(true);
          AddRecentlyUsedColor((*palette)[n]);
        }
      }
 
      if (BeginPopupContextItem(popup_id.c_str())) {
        RETURN_IF_ERROR(HandleColorPopup(*palette, category, j, n))
      }
      PopID();
    }
    PopID();
    EndGroup();
 
    if (j < size - 1) {
      Separator();
    }
  }
  return absl::OkStatus();
}
 
void PaletteEditor::AddRecentlyUsedColor(const SnesColor& color) {
  // Check if color already exists in recently used
  auto it = std::find_if(
      recently_used_colors_.begin(), recently_used_colors_.end(),
      [&color](const SnesColor& c) { return c.snes() == color.snes(); });
 
  // If found, remove it to re-add at front
  if (it != recently_used_colors_.end()) {
    recently_used_colors_.erase(it);
  }
 
  // Add at front
  recently_used_colors_.insert(recently_used_colors_.begin(), color);
 
  // Limit size
  if (recently_used_colors_.size() > 16) {
    recently_used_colors_.pop_back();
  }
}
 
absl::Status PaletteEditor::HandleColorPopup(gfx::SnesPalette& palette, int i,
                                             int j, int n) {
  auto col = gfx::ToFloatArray(palette[n]);
  auto original_color = palette[n];
 
  if (gui::SnesColorEdit4("Edit Color", &palette[n], kColorPopupFlags)) {
    history_.RecordChange(/*group_name=*/std::string(kPaletteGroupNames[i]),
                          /*palette_index=*/j, /*color_index=*/n,
                          original_color, palette[n]);
    palette[n].set_modified(true);
 
    // Add to recently used colors
    AddRecentlyUsedColor(palette[n]);
  }
 
  // Color information display
  char buf[64];
  int cr = F32_TO_INT8_SAT(col[0]);
  int cg = F32_TO_INT8_SAT(col[1]);
  int cb = F32_TO_INT8_SAT(col[2]);
 
  Text(tr("RGB: %d, %d, %d"), cr, cg, cb);
  Text(tr("SNES: $%04X"), palette[n].snes());
 
  Separator();
 
  if (ImGui::BeginMenu(ICON_MD_CONTENT_COPY " Copy as")) {
    gui::SnesColorCopyMenuItems(palette[n]);
    CustomFormatString(buf, IM_ARRAYSIZE(buf), "(%.3ff, %.3ff, %.3ff)", col[0],
                       col[1], col[2]);
    if (ImGui::MenuItem(ICON_MD_CONTENT_COPY " Copy as Float", buf)) {
      SetClipboardText(buf);
    }
    ImGui::EndMenu();
  }
 
  // Add a button to add this color to custom palette
  if (ImGui::MenuItem(ICON_MD_ADD " Add to Custom Palette")) {
    custom_palette_.push_back(palette[n]);
  }
 
  EndPopup();
  return absl::OkStatus();
}
 
absl::Status PaletteEditor::EditColorInPalette(gfx::SnesPalette& palette,
                                               int index) {
  if (index >= palette.size()) {
    return absl::InvalidArgumentError("Index out of bounds");
  }
 
  // Get the current color
  auto color = palette[index];
  auto currentColor = color.rgb();
  if (ColorPicker4("Color Picker", (float*)&palette[index])) {
    // The color was modified, update it in the palette
    palette[index] = gui::ConvertImVec4ToSnesColor(currentColor);
 
    // Add to recently used colors
    AddRecentlyUsedColor(palette[index]);
  }
  return absl::OkStatus();
}
 
absl::Status PaletteEditor::ResetColorToOriginal(
    gfx::SnesPalette& palette, int index,
    const gfx::SnesPalette& originalPalette) {
  if (index >= palette.size() || index >= originalPalette.size()) {
    return absl::InvalidArgumentError("Index out of bounds");
  }
  auto color = originalPalette[index];
  auto originalColor = color.rgb();
  palette[index] = gui::ConvertImVec4ToSnesColor(originalColor);
  return absl::OkStatus();
}
 
// ============================================================================
// Panel-Based UI Methods
// ============================================================================
 
void PaletteEditor::DrawControlPanel() {
  auto& manager = gfx::PaletteManager::Get();
  if (!game_data() || !manager.IsManaging(game_data())) {
    ImGui::TextDisabled(
        tr("Palette controls are unavailable for an inactive ROM session."));
    return;
  }
  RefreshPanelReferences();
  RefreshPaletteCatalogIfChanged();
  const size_t modified_count = manager.GetModifiedColorCount();
  const bool pending = manager.HasUnsavedChanges() || (rom_ && rom_->dirty());
  ImGui::BeginDisabled(!pending || !dependencies_.window_manager);
  const bool save = ImGui::Button(ICON_MD_SAVE " Save ROM");
  gui::AutoRegisterLastItem("button", "Save ROM");
  if (save)
    dependencies_.window_manager->TriggerSaveRom();
  ImGui::EndDisabled();
  if (ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenDisabled))
    ImGui::SetTooltip(
        tr("Save through the application, including pending editor changes."));
  ImGui::SameLine();
  ImGui::BeginDisabled(!CanUndo());
  if (gui::ThemedIconButton(ICON_MD_UNDO, "Undo palette edit"))
    Undo();
  gui::AutoRegisterLastItem("button", "Undo palette edit");
  ImGui::EndDisabled();
  ImGui::SameLine();
  ImGui::BeginDisabled(!CanRedo());
  if (gui::ThemedIconButton(ICON_MD_REDO, "Redo palette edit"))
    Redo();
  gui::AutoRegisterLastItem("button", "Redo palette edit");
  ImGui::EndDisabled();
  ImGui::SameLine();
  if (gui::ThemedIconButton(ICON_MD_MORE_HORIZ, "Palette tools"))
    ImGui::OpenPopup("PaletteTools");
  gui::AutoRegisterLastItem("button", "Palette tools");
  bool discard_requested = false;
  if (ImGui::BeginPopup("PaletteTools")) {
    if (ImGui::MenuItem(tr("Refresh editor previews"))) {
      const auto result = manager.ApplyPreviewChanges();
      if (!result.ok() && dependencies_.toast_manager)
        dependencies_.toast_manager->Show(std::string(result.message()),
                                          ToastType::kError);
    }
    if (ImGui::MenuItem(tr("Discard palette changes..."), nullptr, false,
                        manager.HasUnsavedChanges()))
      discard_requested = true;
    gui::AutoRegisterLastItem("menu", "Discard palette changes");
    ImGui::Separator();
    if (ImGui::MenuItem(tr("Color reference")))
      dependencies_.window_manager->OpenWindow(dependencies_.session_id,
                                               "palette.quick_access");
    if (ImGui::MenuItem(tr("Custom swatches")))
      dependencies_.window_manager->OpenWindow(dependencies_.session_id,
                                               "palette.custom");
    ImGui::EndPopup();
  }
  if (discard_requested)
    ImGui::OpenPopup("Discard palette changes?###ConfirmPaletteDiscard");
  if (ImGui::BeginPopupModal("Discard palette changes?###ConfirmPaletteDiscard",
                             nullptr, ImGuiWindowFlags_AlwaysAutoResize)) {
    ImGui::Text(tr("Discard changes to %zu colors?"), modified_count);
    if (ImGui::Button(tr("Discard"))) {
      manager.DiscardAllChanges();
      ImGui::CloseCurrentPopup();
    }
    ImGui::SameLine();
    if (ImGui::Button(tr("Cancel")))
      ImGui::CloseCurrentPopup();
    gui::AutoRegisterLastItem("button", "Cancel discard");
    ImGui::EndPopup();
  }
  ImGui::SameLine();
  if (modified_count)
    ImGui::TextDisabled(tr("%zu edited colors"), modified_count);
  else
    ImGui::TextDisabled(pending ? tr("ROM has unsaved changes")
                                : tr("No pending palette edits"));
  ImGui::Separator();
 
  if (ImGui::RadioButton(tr("Palettes"), !show_catalog_))
    show_catalog_ = false;
  ImGui::SameLine();
  if (ImGui::RadioButton(tr("Catalog"), show_catalog_))
    show_catalog_ = true;
  ImGui::Separator();
  if (show_catalog_) {
    DrawPaletteCatalog();
    return;
  }
 
  const float nav_width =
      std::clamp(ImGui::GetContentRegionAvail().x * 0.22f,
                 ImGui::GetFontSize() * 11, ImGui::GetFontSize() * 16);
  ImGui::BeginChild("PaletteGroups", ImVec2(nav_width, 0));
  DrawCategorizedPaletteList();
  ImGui::EndChild();
  ImGui::SameLine();
  ImGui::BeginChild("PaletteSelection", ImVec2(0, 0));
  if (auto* panel = GetPanelForGroup(selected_group_)) {
    ImGui::TextUnformatted(GetGroupDisplayName(selected_group_).c_str());
    ImGui::SameLine();
    if (gui::ThemedIconButton(ICON_MD_OPEN_IN_NEW, "Open comparison window"))
      dependencies_.window_manager->OpenWindow(dependencies_.session_id,
                                               panel->GetId());
    gui::AutoRegisterLastItem("button", "Open comparison window");
    ImGui::PushID(selected_group_.c_str());
    panel->DrawEmbedded();
    ImGui::PopID();
  }
  ImGui::EndChild();
}
 
void PaletteEditor::DrawQuickAccessPanel() {
  // Current color picker with more options
  ImGui::BeginGroup();
  ImGui::Text(tr("Current Color"));
  gui::SnesColorEdit4("##CurrentColorPicker", &current_color_,
                      kColorPopupFlags);
 
  char buf[64];
  auto col = current_color_.rgb();
  int cr = F32_TO_INT8_SAT(col.x / 255.0f);
  int cg = F32_TO_INT8_SAT(col.y / 255.0f);
  int cb = F32_TO_INT8_SAT(col.z / 255.0f);
 
  CustomFormatString(buf, IM_ARRAYSIZE(buf), "RGB: %d, %d, %d", cr, cg, cb);
  ImGui::Text("%s", buf);
 
  CustomFormatString(buf, IM_ARRAYSIZE(buf), "SNES: $%04X",
                     current_color_.snes());
  ImGui::Text("%s", buf);
 
  if (ImGui::Button(tr("Copy to Clipboard"), ImVec2(-1, 0))) {
    SetClipboardText(buf);
  }
  ImGui::EndGroup();
 
  ImGui::Separator();
 
  // Recently used colors
  ImGui::Text(tr("Recently Used Colors"));
  if (recently_used_colors_.empty()) {
    ImGui::TextDisabled(tr("No recently used colors yet"));
  } else {
    for (int i = 0; i < recently_used_colors_.size(); i++) {
      PushID(i);
      if (i % 8 != 0)
        SameLine();
      ImVec4 displayColor =
          gui::ConvertSnesColorToImVec4(recently_used_colors_[i]);
      if (ImGui::ColorButton("##recent", displayColor, kPalButtonFlags,
                             ImVec2(28, 28))) {
        // Set as current color
        current_color_ = recently_used_colors_[i];
      }
      if (ImGui::IsItemHovered()) {
        ImGui::SetTooltip(tr("SNES: $%04X"), recently_used_colors_[i].snes());
      }
      PopID();
    }
  }
}
 
void PaletteEditor::DrawCustomPalettePanel() {
  ImGui::TextWrapped(tr(
      "Create your own custom color palette for reference. "
      "Colors can be added from any palette group or created from scratch."));
 
  ImGui::Separator();
 
  // Custom palette color grid
  if (custom_palette_.empty()) {
    ImGui::TextDisabled(tr("Your custom palette is empty."));
    ImGui::Text(tr("Click + to add colors or drag colors from any palette."));
  } else {
    for (int i = 0; i < custom_palette_.size(); i++) {
      PushID(i);
      if (i > 0 && i % 16 != 0)
        SameLine(0.0f, 2.0f);
 
      // Enhanced color button with context menu and drag-drop support
      ImVec4 displayColor = gui::ConvertSnesColorToImVec4(custom_palette_[i]);
      bool open_color_picker =
          ImGui::ColorButton(absl::StrFormat("##customPal%d", i).c_str(),
                             displayColor, kPalButtonFlags, ImVec2(28, 28));
      const ImVec2 swatch_min = ImGui::GetItemRectMin();
      const ImVec2 swatch_max = ImGui::GetItemRectMax();
      if (ImGui::IsItemHovered() &&
          ImGui::IsMouseDoubleClicked(ImGuiMouseButton_Left)) {
        open_color_picker = true;
      }
 
      if (open_color_picker) {
        current_color_ = custom_palette_[i];
        edit_palette_index_ = i;
        ImGui::OpenPopup(gui::MakePopupId(gui::EditorNames::kPalette,
                                          "PanelCustomPaletteColorEdit")
                             .c_str());
      }
 
      if (DrawCustomColorContextMenu(
              custom_palette_, i,
              [this](const SnesColor& c) { AddRecentlyUsedColor(c); })) {
        PopID();
        break;
      }
 
      if (AcceptImGuiColorDrop(&custom_palette_[i], swatch_min, swatch_max)) {
        AddRecentlyUsedColor(custom_palette_[i]);
      }
 
      PopID();
    }
  }
 
  ImGui::Separator();
 
  // Buttons for palette management
  if (ImGui::Button(ICON_MD_ADD " Add Color")) {
    custom_palette_.push_back(SnesColor(0x7FFF));
  }
 
  ImGui::SameLine();
  if (ImGui::Button(ICON_MD_DELETE " Clear All")) {
    custom_palette_.clear();
  }
 
  ImGui::SameLine();
  if (ImGui::Button(ICON_MD_CONTENT_COPY " Export")) {
    std::string clipboard;
    for (const auto& color : custom_palette_) {
      clipboard += absl::StrFormat("$%04X,", color.snes());
    }
    if (!clipboard.empty()) {
      clipboard.pop_back();  // Remove trailing comma
    }
    SetClipboardText(clipboard.c_str());
  }
  if (ImGui::IsItemHovered()) {
    ImGui::SetTooltip(tr("Copy palette as comma-separated SNES values"));
  }
 
  // Color picker popup for custom palette editing
  if (ImGui::BeginPopup(gui::MakePopupId(gui::EditorNames::kPalette,
                                         "PanelCustomPaletteColorEdit")
                            .c_str())) {
    if (edit_palette_index_ >= 0 &&
        edit_palette_index_ < custom_palette_.size()) {
      SnesColor original_color = custom_palette_[edit_palette_index_];
      if (gui::SnesColorEdit4(
              "Edit Color", &custom_palette_[edit_palette_index_],
              kColorPopupFlags | ImGuiColorEditFlags_PickerHueWheel)) {
        // Color was changed, add to recently used
        AddRecentlyUsedColor(custom_palette_[edit_palette_index_]);
      }
    }
    ImGui::EndPopup();
  }
}
 
PaletteGroupPanel* PaletteEditor::GetPanelForGroup(const std::string& group) {
  if (group == "ow_main")
    return ow_main_panel_;
  if (group == "ow_animated")
    return ow_anim_panel_;
  if (group == "dungeon_main")
    return dungeon_main_panel_;
  if (group == "global_sprites")
    return sprite_global_panel_;
  if (group == "sprites_aux1")
    return sprite_aux1_panel_;
  if (group == "sprites_aux2")
    return sprite_aux2_panel_;
  if (group == "sprites_aux3")
    return sprite_aux3_panel_;
  if (group == "armors")
    return equipment_panel_;
  return nullptr;
}
 
void PaletteEditor::JumpToPalette(const std::string& group_name,
                                  int palette_index) {
  if (!dependencies_.window_manager)
    return;
  RefreshPanelReferences();
  if (auto* panel = GetPanelForGroup(group_name)) {
    selected_group_ = group_name;
    panel->SetSelectedPaletteIndex(palette_index);
    dependencies_.window_manager->OpenWindow(dependencies_.session_id,
                                             "palette.control_panel");
  }
}
 
// ============================================================================
// Category and Search UI Methods
// ============================================================================
 
void PaletteEditor::DrawSearchBar() {
  ImGui::SetNextItemWidth(-1);
  if (ImGui::InputTextWithHint("##PaletteSearch",
                               ICON_MD_SEARCH " Search palettes...",
                               search_buffer_, sizeof(search_buffer_))) {
    // Search text changed - UI will update automatically
  }
}
 
bool PaletteEditor::PassesSearchFilter(const std::string& group_name) const {
  if (search_buffer_[0] == '\0')
    return true;
 
  // Check if group name or display name matches
  return gui::FuzzyMatch(search_buffer_, group_name) ||
         gui::FuzzyMatch(search_buffer_, GetGroupDisplayName(group_name));
}
 
void PaletteEditor::DrawCategorizedPaletteList() {
  DrawSearchBar();
  for (const auto& category : GetPaletteCategories()) {
    bool heading_drawn = false;
    for (const auto& group : category.group_names) {
      if (!GetPanelForGroup(group) || !PassesSearchFilter(group))
        continue;
      if (!heading_drawn) {
        ImGui::Spacing();
        ImGui::TextDisabled("%s", category.display_name.c_str());
        heading_drawn = true;
      }
      auto label = GetGroupDisplayName(group);
      if (gfx::PaletteManager::Get().IsGroupModified(group))
        label += " *";
      if (ImGui::Selectable(label.c_str(), selected_group_ == group))
        selected_group_ = group;
      gui::AutoRegisterLastItem("selectable", GetGroupDisplayName(group));
    }
  }
}
 
}  // namespace editor
}  // namespace yaze