[WIP] Command refresh

src/app/commands/cmd_about.cpp

@@ -30,7 +30,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-AboutCommand::AboutCommand() : Command(CommandId::About(), CmdUIOnlyFlag)
+AboutCommand::AboutCommand() : Command(CommandId::About())
 {
 }
 

src/app/commands/cmd_add_color.cpp

@@ -63,8 +63,7 @@ protected:
   std::string onGetFriendlyName() const override;
 };
 
-AddColorCommand::AddColorCommand()
-  : CommandWithNewParams<AddColorParams>(CommandId::AddColor(), CmdUIOnlyFlag)
+AddColorCommand::AddColorCommand() : CommandWithNewParams<AddColorParams>(CommandId::AddColor())
 {
 }
 

src/app/commands/cmd_advanced_mode.cpp

@@ -32,7 +32,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-AdvancedModeCommand::AdvancedModeCommand() : Command(CommandId::AdvancedMode(), CmdUIOnlyFlag)
+AdvancedModeCommand::AdvancedModeCommand() : Command(CommandId::AdvancedMode())
 {
 }
 

src/app/commands/cmd_background_from_layer.cpp

@@ -28,8 +28,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-BackgroundFromLayerCommand::BackgroundFromLayerCommand()
-  : Command(CommandId::BackgroundFromLayer(), CmdRecordableFlag)
+BackgroundFromLayerCommand::BackgroundFromLayerCommand() : Command(CommandId::BackgroundFromLayer())
 {
 }
 

src/app/commands/cmd_cancel.cpp

@@ -37,7 +37,7 @@ private:
   Type m_type;
 };
 
-CancelCommand::CancelCommand() : Command(CommandId::Cancel(), CmdUIOnlyFlag), m_type(NoOp)
+CancelCommand::CancelCommand() : Command(CommandId::Cancel()), m_type(NoOp)
 {
 }
 

src/app/commands/cmd_canvas_size.cpp

@@ -282,8 +282,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-CanvasSizeCommand::CanvasSizeCommand()
-  : CommandWithNewParams(CommandId::CanvasSize(), CmdRecordableFlag)
+CanvasSizeCommand::CanvasSizeCommand() : CommandWithNewParams(CommandId::CanvasSize())
 {
 }
 

src/app/commands/cmd_cel_opacity.cpp

@@ -20,8 +20,6 @@
 #include "app/tx.h"
 #include "app/ui/timeline/timeline.h"
 #include "doc/cel.h"
-#include "doc/cels_range.h"
-#include "doc/sprite.h"
 
 #include <string>
 
@@ -42,7 +40,7 @@ private:
   int m_opacity;
 };
 
-CelOpacityCommand::CelOpacityCommand() : Command(CommandId::CelOpacity(), CmdUIOnlyFlag)
+CelOpacityCommand::CelOpacityCommand() : Command(CommandId::CelOpacity())
 {
   m_opacity = 255;
 }

src/app/commands/cmd_cel_properties.cpp

@@ -23,7 +23,6 @@
 #include "app/ui/timeline/timeline.h"
 #include "app/ui/user_data_view.h"
 #include "app/ui_context.h"
-#include "base/mem_utils.h"
 #include "base/scoped_value.h"
 #include "doc/cel.h"
 #include "doc/cels_range.h"
@@ -385,7 +384,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-CelPropertiesCommand::CelPropertiesCommand() : Command(CommandId::CelProperties(), CmdUIOnlyFlag)
+CelPropertiesCommand::CelPropertiesCommand() : Command(CommandId::CelProperties())
 {
 }
 

src/app/commands/cmd_change_brush.cpp

@@ -64,7 +64,7 @@ private:
   int m_slot;
 };
 
-ChangeBrushCommand::ChangeBrushCommand() : Command(CommandId::ChangeBrush(), CmdUIOnlyFlag)
+ChangeBrushCommand::ChangeBrushCommand() : Command(CommandId::ChangeBrush())
 {
   m_change = None;
   m_slot = 0;

src/app/commands/cmd_change_color.cpp

@@ -45,7 +45,7 @@ protected:
   std::string onGetFriendlyName() const override;
 };
 
-ChangeColorCommand::ChangeColorCommand() : Command(CommandId::ChangeColor(), CmdUIOnlyFlag)
+ChangeColorCommand::ChangeColorCommand() : Command(CommandId::ChangeColor())
 {
   m_background = false;
   m_change = None;

src/app/commands/cmd_change_pixel_format.cpp

@@ -507,7 +507,7 @@ private:
 };
 
 ChangePixelFormatCommand::ChangePixelFormatCommand()
-  : CommandWithNewParams(CommandId::ChangePixelFormat(), CmdUIOnlyFlag)
+  : CommandWithNewParams(CommandId::ChangePixelFormat())
 {
 }
 

src/app/commands/cmd_clear.cpp

@@ -23,7 +23,7 @@ protected:
   void onExecute(Context* ctx) override;
 };
 
-ClearCommand::ClearCommand() : Command(CommandId::Clear(), CmdUIOnlyFlag)
+ClearCommand::ClearCommand() : Command(CommandId::Clear())
 {
 }
 

src/app/commands/cmd_clear_cel.cpp

@@ -32,7 +32,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-ClearCelCommand::ClearCelCommand() : Command(CommandId::ClearCel(), CmdRecordableFlag)
+ClearCelCommand::ClearCelCommand() : Command(CommandId::ClearCel())
 {
 }
 
@@ -76,7 +76,7 @@ void ClearCelCommand::onExecute(Context* context)
     tx.commit();
   }
 
-  if (nonEditableLayers)
+  if (context->isUIAvailable() && nonEditableLayers)
     StatusBar::instance()->showTip(1000, Strings::statusbar_tips_locked_layers());
 
   update_screen_for_document(document);

src/app/commands/cmd_clear_recent_files.cpp

@@ -23,8 +23,7 @@ protected:
   void onExecute(Context* ctx) override;
 };
 
-ClearRecentFilesCommand::ClearRecentFilesCommand()
-  : Command(CommandId::ClearRecentFiles(), CmdUIOnlyFlag)
+ClearRecentFilesCommand::ClearRecentFilesCommand() : Command(CommandId::ClearRecentFiles())
 {
 }
 

src/app/commands/cmd_close_file.cpp

@@ -28,7 +28,7 @@ using namespace ui;
 
 class CloseFileCommand : public Command {
 public:
-  CloseFileCommand() : Command(CommandId::CloseFile(), CmdUIOnlyFlag) {}
+  CloseFileCommand() : Command(CommandId::CloseFile()) {}
 
 protected:
   bool onEnabled(Context* context) override
@@ -51,12 +51,15 @@ protected:
 
 class CloseAllFilesCommand : public Command {
 public:
-  CloseAllFilesCommand() : Command(CommandId::CloseAllFiles(), CmdRecordableFlag)
-  {
-    m_quitting = false;
-  }
+  CloseAllFilesCommand() : Command(CommandId::CloseAllFiles()) { m_quitting = false; }
 
 protected:
+  bool onEnabled(Context* context) override
+  {
+    // Null if we are in --batch mode
+    return App::instance()->workspace() != nullptr;
+  }
+
   void onLoadParams(const Params& params) override { m_quitting = params.get_as<bool>("quitting"); }
 
   void onExecute(Context* context) override

src/app/commands/cmd_color_quantization.cpp

@@ -71,7 +71,7 @@ protected:
 };
 
 ColorQuantizationCommand::ColorQuantizationCommand()
-  : CommandWithNewParams<ColorQuantizationParams>(CommandId::ColorQuantization(), CmdRecordableFlag)
+  : CommandWithNewParams<ColorQuantizationParams>(CommandId::ColorQuantization())
 {
 }
 

src/app/commands/cmd_contiguous_fill.cpp

@@ -24,7 +24,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-ContiguousFillCommand::ContiguousFillCommand() : Command(CommandId::ContiguousFill(), CmdUIOnlyFlag)
+ContiguousFillCommand::ContiguousFillCommand() : Command(CommandId::ContiguousFill())
 {
 }
 

src/app/commands/cmd_copy.cpp

@@ -23,7 +23,7 @@ protected:
   void onExecute(Context* ctx) override;
 };
 
-CopyCommand::CopyCommand() : Command(CommandId::Copy(), CmdUIOnlyFlag)
+CopyCommand::CopyCommand() : Command(CommandId::Copy())
 {
 }
 

src/app/commands/cmd_copy_cel.cpp

@@ -25,13 +25,13 @@ protected:
   void onExecute(Context* context) override;
 };
 
-CopyCelCommand::CopyCelCommand() : Command(CommandId::CopyCel(), CmdUIOnlyFlag)
+CopyCelCommand::CopyCelCommand() : Command(CommandId::CopyCel())
 {
 }
 
 bool CopyCelCommand::onEnabled(Context* context)
 {
-  return App::instance()->timeline()->isMovingCel();
+  return App::instance()->timeline() && App::instance()->timeline()->isMovingCel();
 }
 
 void CopyCelCommand::onExecute(Context* context)

src/app/commands/cmd_copy_merged.cpp

@@ -24,7 +24,7 @@ protected:
   void onExecute(Context* ctx) override;
 };
 
-CopyMergedCommand::CopyMergedCommand() : Command(CommandId::CopyMerged(), CmdUIOnlyFlag)
+CopyMergedCommand::CopyMergedCommand() : Command(CommandId::CopyMerged())
 {
 }
 

src/app/commands/cmd_crop.cpp

@@ -37,7 +37,7 @@ private:
   gfx::Rect m_bounds;
 };
 
-CropSpriteCommand::CropSpriteCommand() : Command(CommandId::CropSprite(), CmdRecordableFlag)
+CropSpriteCommand::CropSpriteCommand() : Command(CommandId::CropSprite())
 {
 }
 
@@ -95,8 +95,7 @@ private:
   bool m_byGrid = false;
 };
 
-AutocropSpriteCommand::AutocropSpriteCommand()
-  : Command(CommandId::AutocropSprite(), CmdRecordableFlag)
+AutocropSpriteCommand::AutocropSpriteCommand() : Command(CommandId::AutocropSprite())
 {
 }
 

src/app/commands/cmd_cut.cpp

@@ -23,7 +23,7 @@ protected:
   void onExecute(Context* ctx) override;
 };
 
-CutCommand::CutCommand() : Command(CommandId::Cut(), CmdUIOnlyFlag)
+CutCommand::CutCommand() : Command(CommandId::Cut())
 {
 }
 

src/app/commands/cmd_deselect_mask.cpp

@@ -28,7 +28,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-DeselectMaskCommand::DeselectMaskCommand() : Command(CommandId::DeselectMask(), CmdRecordableFlag)
+DeselectMaskCommand::DeselectMaskCommand() : Command(CommandId::DeselectMask())
 {
 }
 

src/app/commands/cmd_developer_console.cpp

@@ -29,8 +29,7 @@ protected:
   void onExecute(Context* context);
 };
 
-DeveloperConsoleCommand::DeveloperConsoleCommand()
-  : Command(CommandId::DeveloperConsole(), CmdUIOnlyFlag)
+DeveloperConsoleCommand::DeveloperConsoleCommand() : Command(CommandId::DeveloperConsole())
 {
 }
 

src/app/commands/cmd_discard_brush.cpp

@@ -28,12 +28,15 @@ protected:
   void onExecute(Context* context) override;
 };
 
-DiscardBrushCommand::DiscardBrushCommand() : Command(CommandId::DiscardBrush(), CmdUIOnlyFlag)
+DiscardBrushCommand::DiscardBrushCommand() : Command(CommandId::DiscardBrush())
 {
 }
 
 bool DiscardBrushCommand::onEnabled(Context* context)
 {
+  if (!context->isUIAvailable())
+    return false;
+
   ContextBar* ctxBar = App::instance()->contextBar();
   return (ctxBar->activeBrush()->type() == kImageBrushType);
 }

src/app/commands/cmd_duplicate_layer.cpp

@@ -32,8 +32,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-DuplicateLayerCommand::DuplicateLayerCommand()
-  : Command(CommandId::DuplicateLayer(), CmdRecordableFlag)
+DuplicateLayerCommand::DuplicateLayerCommand() : Command(CommandId::DuplicateLayer())
 {
 }
 

src/app/commands/cmd_duplicate_sprite.cpp

@@ -43,7 +43,7 @@ protected:
 };
 
 DuplicateSpriteCommand::DuplicateSpriteCommand()
-  : CommandWithNewParams<DuplicateSpriteParams>(CommandId::DuplicateSprite(), CmdRecordableFlag)
+  : CommandWithNewParams<DuplicateSpriteParams>(CommandId::DuplicateSprite())
 {
 }
 

src/app/commands/cmd_duplicate_view.cpp

@@ -28,7 +28,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-DuplicateViewCommand::DuplicateViewCommand() : Command(CommandId::DuplicateView(), CmdUIOnlyFlag)
+DuplicateViewCommand::DuplicateViewCommand() : Command(CommandId::DuplicateView())
 {
 }
 

src/app/commands/cmd_enter_license.cpp

@@ -24,7 +24,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-EnterLicenseCommand::EnterLicenseCommand() : Command(CommandId::EnterLicense(), CmdUIOnlyFlag)
+EnterLicenseCommand::EnterLicenseCommand() : Command(CommandId::EnterLicense())
 {
 }
 

src/app/commands/cmd_exit.cpp

@@ -32,7 +32,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-ExitCommand::ExitCommand() : Command(CommandId::Exit(), CmdUIOnlyFlag)
+ExitCommand::ExitCommand() : Command(CommandId::Exit())
 {
 }
 

src/app/commands/cmd_export_sprite_sheet.cpp

@@ -1187,8 +1187,7 @@ private:
 
 } // anonymous namespace
 
-ExportSpriteSheetCommand::ExportSpriteSheetCommand(const char* id)
-  : CommandWithNewParams(id, CmdRecordableFlag)
+ExportSpriteSheetCommand::ExportSpriteSheetCommand(const char* id) : CommandWithNewParams(id)
 {
 }
 

src/app/commands/cmd_eyedropper.cpp

@@ -28,7 +28,7 @@ namespace app {
 
 using namespace ui;
 
-EyedropperCommand::EyedropperCommand() : Command(CommandId::Eyedropper(), CmdUIOnlyFlag)
+EyedropperCommand::EyedropperCommand() : Command(CommandId::Eyedropper())
 {
   m_background = false;
 }

src/app/commands/cmd_fill_and_stroke.cpp

@@ -39,7 +39,7 @@ private:
 };
 
 FillCommand::FillCommand(Type type)
-  : Command(type == Stroke ? CommandId::Stroke() : CommandId::Fill(), CmdUIOnlyFlag)
+  : Command(type == Stroke ? CommandId::Stroke() : CommandId::Fill())
   , m_type(type)
 {
 }

src/app/commands/cmd_fit_screen.cpp

@@ -25,7 +25,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-FitScreenCommand::FitScreenCommand() : Command(CommandId::FitScreen(), CmdUIOnlyFlag)
+FitScreenCommand::FitScreenCommand() : Command(CommandId::FitScreen())
 {
 }
 

src/app/commands/cmd_flatten_layers.cpp

@@ -36,7 +36,7 @@ protected:
   bool m_visibleOnly;
 };
 
-FlattenLayersCommand::FlattenLayersCommand() : Command(CommandId::FlattenLayers(), CmdUIOnlyFlag)
+FlattenLayersCommand::FlattenLayersCommand() : Command(CommandId::FlattenLayers())
 {
   m_visibleOnly = false;
 }

src/app/commands/cmd_flip.cpp

@@ -42,7 +42,7 @@
 
 namespace app {
 
-FlipCommand::FlipCommand() : Command(CommandId::Flip(), CmdRecordableFlag)
+FlipCommand::FlipCommand() : Command(CommandId::Flip())
 {
   m_flipMask = false;
   m_flipType = doc::algorithm::FlipHorizontal;

src/app/commands/cmd_frame_properties.cpp

@@ -44,12 +44,11 @@ private:
 
   // Frame to be shown. It can be ALL_FRAMES, CURRENT_RANGE, or a
   // number indicating a specific frame (1 is the first frame).
-  Target m_target;
-  frame_t m_frame;
+  Target m_target = CURRENT_RANGE;
+  frame_t m_frame = 1;
 };
 
-FramePropertiesCommand::FramePropertiesCommand()
-  : Command(CommandId::FrameProperties(), CmdUIOnlyFlag)
+FramePropertiesCommand::FramePropertiesCommand() : Command(CommandId::FrameProperties())
 {
 }
 
@@ -62,15 +61,19 @@ void FramePropertiesCommand::onLoadParams(const Params& params)
   else if (frame == "current") {
     m_target = CURRENT_RANGE;
   }
-  else {
+
+  const int frameNumber = frame_t(base::convert_to<int>(frame));
+  // Will open with the default target (CURRENT_RANGE) if the frame number cannot be parsed.
+  if (frameNumber < 1)
+    return;
+
+  m_frame = frameNumber;
   m_target = SPECIFIC_FRAME;
-    m_frame = frame_t(base::convert_to<int>(frame));
-  }
 }
 
 bool FramePropertiesCommand::onEnabled(Context* context)
 {
-  return context->checkFlags(ContextFlags::ActiveDocumentIsWritable);
+  return context->isUIAvailable() && context->checkFlags(ContextFlags::ActiveDocumentIsWritable);
 }
 
 void FramePropertiesCommand::onExecute(Context* context)

src/app/commands/cmd_frame_tag_properties.cpp

@@ -48,7 +48,7 @@ private:
 };
 
 FrameTagPropertiesCommand::FrameTagPropertiesCommand()
-  : Command(CommandId::FrameTagProperties(), CmdUIOnlyFlag)
+  : Command(CommandId::FrameTagProperties())
   , m_tagId(NullId)
 {
 }
@@ -66,7 +66,7 @@ void FrameTagPropertiesCommand::onLoadParams(const Params& params)
 
 bool FrameTagPropertiesCommand::onEnabled(Context* context)
 {
-  return context->checkFlags(ContextFlags::ActiveDocumentIsWritable);
+  return context->isUIAvailable() && context->checkFlags(ContextFlags::ActiveDocumentIsWritable);
 }
 
 void FrameTagPropertiesCommand::onExecute(Context* context)

src/app/commands/cmd_fullscreen_mode.cpp

@@ -27,7 +27,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-FullscreenModeCommand::FullscreenModeCommand() : Command(CommandId::FullscreenMode(), CmdUIOnlyFlag)
+FullscreenModeCommand::FullscreenModeCommand() : Command(CommandId::FullscreenMode())
 {
 }
 

src/app/commands/cmd_fullscreen_preview.cpp

@@ -308,8 +308,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-FullscreenPreviewCommand::FullscreenPreviewCommand()
-  : Command(CommandId::FullscreenPreview(), CmdUIOnlyFlag)
+FullscreenPreviewCommand::FullscreenPreviewCommand() : Command(CommandId::FullscreenPreview())
 {
 }
 

src/app/commands/cmd_goto_frame.cpp

@@ -31,7 +31,7 @@ using namespace doc;
 
 class GotoCommand : public Command {
 protected:
-  GotoCommand(const char* id) : Command(id, CmdRecordableFlag) {}
+  GotoCommand(const char* id) : Command(id) {}
 
   bool onEnabled(Context* context) override { return (Editor::activeEditor() != nullptr); }
 

src/app/commands/cmd_goto_layer.cpp

@@ -24,11 +24,7 @@ namespace app {
 
 class GotoLayerCommand : public Command {
 public:
-  GotoLayerCommand(int offset, const char* id, CommandFlags flags)
-    : Command(id, flags)
-    , m_offset(offset)
-  {
-  }
+  GotoLayerCommand(int offset, const char* id) : Command(id), m_offset(offset) {}
 
 protected:
   bool onEnabled(Context* context) override
@@ -88,12 +84,12 @@ private:
 
 class GotoPreviousLayerCommand : public GotoLayerCommand {
 public:
-  GotoPreviousLayerCommand() : GotoLayerCommand(-1, "GotoPreviousLayer", CmdUIOnlyFlag) {}
+  GotoPreviousLayerCommand() : GotoLayerCommand(-1, "GotoPreviousLayer") {}
 };
 
 class GotoNextLayerCommand : public GotoLayerCommand {
 public:
-  GotoNextLayerCommand() : GotoLayerCommand(+1, "GotoNextLayer", CmdUIOnlyFlag) {}
+  GotoNextLayerCommand() : GotoLayerCommand(+1, "GotoNextLayer") {}
 };
 
 Command* CommandFactory::createGotoPreviousLayerCommand()

src/app/commands/cmd_goto_tab.cpp

@@ -24,7 +24,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-GotoNextTabCommand::GotoNextTabCommand() : Command(CommandId::GotoNextTab(), CmdUIOnlyFlag)
+GotoNextTabCommand::GotoNextTabCommand() : Command(CommandId::GotoNextTab())
 {
 }
 
@@ -50,8 +50,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-GotoPreviousTabCommand::GotoPreviousTabCommand()
-  : Command(CommandId::GotoPreviousTab(), CmdRecordableFlag)
+GotoPreviousTabCommand::GotoPreviousTabCommand() : Command(CommandId::GotoPreviousTab())
 {
 }
 

src/app/commands/cmd_grid.cpp

@@ -36,7 +36,7 @@ using namespace gfx;
 
 class SnapToGridCommand : public Command {
 public:
-  SnapToGridCommand() : Command(CommandId::SnapToGrid(), CmdUIOnlyFlag) {}
+  SnapToGridCommand() : Command(CommandId::SnapToGrid()) {}
 
 protected:
   bool onChecked(Context* ctx) override
@@ -51,13 +51,14 @@ protected:
     bool newValue = !docPref.grid.snap();
     docPref.grid.snap(newValue);
 
+    if (ctx->isUIAvailable())
       StatusBar::instance()->showSnapToGridWarning(newValue);
   }
 };
 
 class SelectionAsGridCommand : public Command {
 public:
-  SelectionAsGridCommand() : Command(CommandId::SelectionAsGrid(), CmdUIOnlyFlag) {}
+  SelectionAsGridCommand() : Command(CommandId::SelectionAsGrid()) {}
 
 protected:
   bool onEnabled(Context* ctx) override
@@ -92,13 +93,13 @@ protected:
   void onExecute(Context* context) override;
 };
 
-GridSettingsCommand::GridSettingsCommand() : Command(CommandId::GridSettings(), CmdUIOnlyFlag)
+GridSettingsCommand::GridSettingsCommand() : Command(CommandId::GridSettings())
 {
 }
 
 bool GridSettingsCommand::onEnabled(Context* context)
 {
-  return true;
+  return context->isUIAvailable();
 }
 
 void GridSettingsCommand::onExecute(Context* context)

src/app/commands/cmd_home.cpp

@@ -10,6 +10,7 @@
 
 #include "app/app.h"
 #include "app/commands/command.h"
+#include "app/context.h"
 #include "app/ui/main_window.h"
 
 namespace app {
@@ -26,7 +27,7 @@ protected:
   bool onEnabled(Context* context) override;
 };
 
-HomeCommand::HomeCommand() : Command(CommandId::Home(), CmdUIOnlyFlag)
+HomeCommand::HomeCommand() : Command(CommandId::Home())
 {
 }
 
@@ -41,7 +42,7 @@ void HomeCommand::onExecute(Context* context)
 
 bool HomeCommand::onEnabled(Context* context)
 {
-  return !App::instance()->mainWindow()->isHomeSelected();
+  return context->isUIAvailable() && !App::instance()->mainWindow()->isHomeSelected();
 }
 
 Command* CommandFactory::createHomeCommand()

src/app/commands/cmd_import_sprite_sheet.cpp

@@ -518,7 +518,7 @@ protected:
 };
 
 ImportSpriteSheetCommand::ImportSpriteSheetCommand()
-  : CommandWithNewParams(CommandId::ImportSpriteSheet(), CmdRecordableFlag)
+  : CommandWithNewParams(CommandId::ImportSpriteSheet())
 {
 }
 

src/app/commands/cmd_invert_mask.cpp

@@ -31,7 +31,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-InvertMaskCommand::InvertMaskCommand() : Command(CommandId::InvertMask(), CmdRecordableFlag)
+InvertMaskCommand::InvertMaskCommand() : Command(CommandId::InvertMask())
 {
 }
 

src/app/commands/cmd_keyboard_shortcuts.cpp

@@ -977,6 +977,7 @@ public:
   KeyboardShortcutsCommand();
 
 protected:
+  bool onEnabled(Context* context) override;
   void onLoadParams(const Params& params) override;
   void onExecute(Context* context) override;
 
@@ -986,11 +987,15 @@ private:
   std::string m_search;
 };
 
-KeyboardShortcutsCommand::KeyboardShortcutsCommand()
-  : Command(CommandId::KeyboardShortcuts(), CmdUIOnlyFlag)
+KeyboardShortcutsCommand::KeyboardShortcutsCommand() : Command(CommandId::KeyboardShortcuts())
 {
 }
 
+bool KeyboardShortcutsCommand::onEnabled(Context* context)
+{
+  return context->isUIAvailable();
+}
+
 void KeyboardShortcutsCommand::onLoadParams(const Params& params)
 {
   m_search = params.get("search");

src/app/commands/cmd_launch.cpp

@@ -34,10 +34,7 @@ private:
   std::string m_path;
 };
 
-LaunchCommand::LaunchCommand()
-  : Command(CommandId::Launch(), CmdUIOnlyFlag)
-  , m_type(Url)
-  , m_path("")
+LaunchCommand::LaunchCommand() : Command(CommandId::Launch()), m_type(Url), m_path("")
 {
 }
 
@@ -45,7 +42,7 @@ void LaunchCommand::onLoadParams(const Params& params)
 {
   m_path = params.get("path");
 
-  if (m_type == Url && !m_path.empty() && m_path[0] == '/') {
+  if (m_type == Url && !m_path.empty() && m_path[0] == '/' && !base::is_absolute_path(m_path)) {
     m_path = std::string(get_app_url()) + m_path.substr(1);
   }
 }

src/app/commands/cmd_layer_from_background.cpp

@@ -28,8 +28,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-LayerFromBackgroundCommand::LayerFromBackgroundCommand()
-  : Command(CommandId::LayerFromBackground(), CmdRecordableFlag)
+LayerFromBackgroundCommand::LayerFromBackgroundCommand() : Command(CommandId::LayerFromBackground())
 {
 }
 

src/app/commands/cmd_layer_lock.cpp

@@ -30,7 +30,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-LayerLockCommand::LayerLockCommand() : Command(CommandId::LayerLock(), CmdRecordableFlag)
+LayerLockCommand::LayerLockCommand() : Command(CommandId::LayerLock())
 {
 }
 

src/app/commands/cmd_layer_opacity.cpp

@@ -40,7 +40,7 @@ private:
   int m_opacity;
 };
 
-LayerOpacityCommand::LayerOpacityCommand() : Command(CommandId::LayerOpacity(), CmdUIOnlyFlag)
+LayerOpacityCommand::LayerOpacityCommand() : Command(CommandId::LayerOpacity())
 {
   m_opacity = 255;
 }

src/app/commands/cmd_layer_properties.cpp

@@ -500,14 +500,14 @@ private:
   bool m_remapAfterConfigure = false;
 };
 
-LayerPropertiesCommand::LayerPropertiesCommand()
-  : Command(CommandId::LayerProperties(), CmdRecordableFlag)
+LayerPropertiesCommand::LayerPropertiesCommand() : Command(CommandId::LayerProperties())
 {
 }
 
 bool LayerPropertiesCommand::onEnabled(Context* context)
 {
-  return context->checkFlags(ContextFlags::ActiveDocumentIsWritable | ContextFlags::HasActiveLayer);
+  return context->isUIAvailable() &&
+         context->checkFlags(ContextFlags::ActiveDocumentIsWritable | ContextFlags::HasActiveLayer);
 }
 
 void LayerPropertiesCommand::onExecute(Context* context)

src/app/commands/cmd_layer_visibility.cpp

@@ -29,8 +29,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-LayerVisibilityCommand::LayerVisibilityCommand()
-  : Command(CommandId::LayerVisibility(), CmdRecordableFlag)
+LayerVisibilityCommand::LayerVisibilityCommand() : Command(CommandId::LayerVisibility())
 {
 }
 

src/app/commands/cmd_link_cels.cpp

@@ -31,7 +31,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-LinkCelsCommand::LinkCelsCommand() : Command(CommandId::LinkCels(), CmdRecordableFlag)
+LinkCelsCommand::LinkCelsCommand() : Command(CommandId::LinkCels())
 {
 }
 
@@ -88,7 +88,7 @@ void LinkCelsCommand::onExecute(Context* context)
     tx.commit();
   }
 
-  if (nonEditableLayers)
+  if (context->isUIAvailable() && nonEditableLayers)
     StatusBar::instance()->showTip(1000, Strings::statusbar_tips_locked_layers());
 
   update_screen_for_document(document);

src/app/commands/cmd_load_mask.cpp

@@ -26,6 +26,7 @@ namespace app {
 
 class LoadMaskCommand : public Command {
   std::string m_filename;
+  bool m_ui = true;
 
 public:
   LoadMaskCommand();
@@ -36,13 +37,16 @@ protected:
   void onExecute(Context* context) override;
 };
 
-LoadMaskCommand::LoadMaskCommand() : Command(CommandId::LoadMask(), CmdRecordableFlag)
+LoadMaskCommand::LoadMaskCommand() : Command(CommandId::LoadMask())
 {
-  m_filename = "";
 }
 
 void LoadMaskCommand::onLoadParams(const Params& params)
 {
+  if (params.has_param("ui"))
+    m_ui = params.get_as<bool>("ui");
+  else
+    m_ui = true;
   m_filename = params.get("filename");
 }
 
@@ -55,7 +59,7 @@ void LoadMaskCommand::onExecute(Context* context)
 {
   const ContextReader reader(context);
 
-  if (context->isUIAvailable()) {
+  if (context->isUIAvailable() && m_ui) {
     base::paths exts = { "msk" };
     base::paths selectedFilename;
     if (!app::show_file_selector(Strings::load_selection_title(),
@@ -70,6 +74,7 @@ void LoadMaskCommand::onExecute(Context* context)
 
   std::unique_ptr<Mask> mask(load_msk_file(m_filename.c_str()));
   if (!mask) {
+    if (context->isUIAvailable())
       ui::Alert::show(Strings::alerts_error_loading_file(m_filename));
     return;
   }

src/app/commands/cmd_load_palette.cpp

@@ -37,14 +37,19 @@ protected:
 private:
   std::string m_preset;
   std::string m_filename;
+  bool m_ui = true;
 };
 
-LoadPaletteCommand::LoadPaletteCommand() : Command(CommandId::LoadPalette(), CmdRecordableFlag)
+LoadPaletteCommand::LoadPaletteCommand() : Command(CommandId::LoadPalette())
 {
 }
 
 void LoadPaletteCommand::onLoadParams(const Params& params)
 {
+  if (params.has_param("ui"))
+    m_ui = params.get_as<bool>("ui");
+  else
+    m_ui = true;
   m_preset = params.get("preset");
   m_filename = params.get("filename");
 }
@@ -58,20 +63,20 @@ void LoadPaletteCommand::onExecute(Context* context)
     if (!base::is_file(filename))
       filename = get_preset_palette_filename(m_preset, ".gpl");
   }
-  else if (!m_filename.empty()) {
-    filename = m_filename;
-  }
-  else if (context->isUIAvailable()) {
-    base::paths exts = get_readable_palette_extensions();
+  else if (context->isUIAvailable() && m_ui) {
+    const base::paths exts = get_readable_palette_extensions();
     base::paths filenames;
     if (app::show_file_selector(Strings::load_palette_title(),
-                                "",
+                                m_filename,
                                 exts,
                                 FileSelectorType::Open,
                                 filenames)) {
       filename = filenames.front();
     }
   }
+  else if (!m_filename.empty()) {
+    filename = m_filename;
+  }
 
   // Do nothing
   if (filename.empty())

src/app/commands/cmd_mask_all.cpp

@@ -29,7 +29,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-MaskAllCommand::MaskAllCommand() : Command(CommandId::MaskAll(), CmdRecordableFlag)
+MaskAllCommand::MaskAllCommand() : Command(CommandId::MaskAll())
 {
 }
 

src/app/commands/cmd_mask_by_color.cpp

@@ -203,8 +203,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-MaskByColorCommand::MaskByColorCommand()
-  : CommandWithNewParams(CommandId::MaskByColor(), CmdUIOnlyFlag)
+MaskByColorCommand::MaskByColorCommand() : CommandWithNewParams(CommandId::MaskByColor())
 {
 }
 

src/app/commands/cmd_mask_content.cpp

@@ -38,7 +38,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-MaskContentCommand::MaskContentCommand() : Command(CommandId::MaskContent(), CmdRecordableFlag)
+MaskContentCommand::MaskContentCommand() : Command(CommandId::MaskContent())
 {
 }
 
@@ -87,10 +87,12 @@ void MaskContentCommand::onExecute(Context* context)
   }
 
   // Select marquee tool
+  if (context->isUIAvailable()) {
     if (tools::Tool* tool = App::instance()->toolBox()->getToolById(
           tools::WellKnownTools::RectangularMarquee)) {
       ToolBar::instance()->selectTool(tool);
     }
+  }
 
   update_screen_for_document(document);
 }

src/app/commands/cmd_merge_down_layer.cpp

@@ -35,8 +35,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-MergeDownLayerCommand::MergeDownLayerCommand()
-  : Command(CommandId::MergeDownLayer(), CmdRecordableFlag)
+MergeDownLayerCommand::MergeDownLayerCommand() : Command(CommandId::MergeDownLayer())
 {
 }
 

src/app/commands/cmd_modify_selection.cpp

@@ -52,13 +52,15 @@ private:
   Modifier m_modifier;
   int m_quantity;
   doc::BrushType m_brushType;
+  bool m_ui;
 };
 
 ModifySelectionCommand::ModifySelectionCommand()
-  : Command(CommandId::ModifySelection(), CmdRecordableFlag)
+  : Command(CommandId::ModifySelection())
   , m_modifier(Modifier::Expand)
   , m_quantity(0)
   , m_brushType(doc::kCircleBrushType)
+  , m_ui(true)
 {
 }
 
@@ -80,6 +82,11 @@ void ModifySelectionCommand::onLoadParams(const Params& params)
     m_brushType = doc::kCircleBrushType;
   else if (brush == "square")
     m_brushType = doc::kSquareBrushType;
+
+  if (params.has_param("ui"))
+    m_ui = params.get_as<bool>("ui");
+  else
+    m_ui = true;
 }
 
 bool ModifySelectionCommand::onEnabled(Context* context)
@@ -92,7 +99,7 @@ void ModifySelectionCommand::onExecute(Context* context)
   int quantity = m_quantity;
   doc::BrushType brush = m_brushType;
 
-  if (quantity == 0) {
+  if (quantity == 0 && m_ui && context->isUIAvailable()) {
     Preferences& pref = Preferences::instance();
     ModifySelectionWindow window;
 

src/app/commands/cmd_move_cel.cpp

@@ -25,13 +25,13 @@ protected:
   void onExecute(Context* context) override;
 };
 
-MoveCelCommand::MoveCelCommand() : Command(CommandId::MoveCel(), CmdUIOnlyFlag)
+MoveCelCommand::MoveCelCommand() : Command(CommandId::MoveCel())
 {
 }
 
 bool MoveCelCommand::onEnabled(Context* context)
 {
-  return App::instance()->timeline()->isMovingCel();
+  return context->isUIAvailable() && App::instance()->timeline()->isMovingCel();
 }
 
 void MoveCelCommand::onExecute(Context* context)

src/app/commands/cmd_move_mask.cpp

@@ -30,7 +30,7 @@
 
 namespace app {
 
-MoveMaskCommand::MoveMaskCommand() : Command(CommandId::MoveMask(), CmdRecordableFlag)
+MoveMaskCommand::MoveMaskCommand() : Command(CommandId::MoveMask())
 {
 }
 

src/app/commands/cmd_new_brush.cpp

@@ -52,13 +52,13 @@ private:
   void selectPencilTool();
 };
 
-NewBrushCommand::NewBrushCommand() : Command(CommandId::NewBrush(), CmdUIOnlyFlag)
+NewBrushCommand::NewBrushCommand() : Command(CommandId::NewBrush())
 {
 }
 
 bool NewBrushCommand::onEnabled(Context* context)
 {
-  return context->checkFlags(ContextFlags::ActiveDocumentIsWritable);
+  return context->isUIAvailable() && context->checkFlags(ContextFlags::ActiveDocumentIsWritable);
 }
 
 void NewBrushCommand::onExecute(Context* context)

src/app/commands/cmd_new_file.cpp

@@ -64,7 +64,7 @@ protected:
 // static
 int NewFileCommand::g_spriteCounter = 0;
 
-NewFileCommand::NewFileCommand() : CommandWithNewParams(CommandId::NewFile(), CmdRecordableFlag)
+NewFileCommand::NewFileCommand() : CommandWithNewParams(CommandId::NewFile())
 {
 }
 

src/app/commands/cmd_new_frame.cpp

@@ -57,7 +57,7 @@ private:
   Content m_content;
 };
 
-NewFrameCommand::NewFrameCommand() : Command(CommandId::NewFrame(), CmdRecordableFlag)
+NewFrameCommand::NewFrameCommand() : Command(CommandId::NewFrame())
 {
 }
 

src/app/commands/cmd_new_frame_tag.cpp

@@ -33,13 +33,13 @@ protected:
   void onExecute(Context* context) override;
 };
 
-NewFrameTagCommand::NewFrameTagCommand() : Command(CommandId::NewFrameTag(), CmdRecordableFlag)
+NewFrameTagCommand::NewFrameTagCommand() : Command(CommandId::NewFrameTag())
 {
 }
 
 bool NewFrameTagCommand::onEnabled(Context* context)
 {
-  return context->checkFlags(ContextFlags::ActiveDocumentIsWritable |
+  return context->isUIAvailable() && context->checkFlags(ContextFlags::ActiveDocumentIsWritable |
                                                          ContextFlags::HasActiveSprite);
 }
 

src/app/commands/cmd_new_layer.cpp

@@ -99,7 +99,7 @@ private:
   Place m_place;
 };
 
-NewLayerCommand::NewLayerCommand() : CommandWithNewParams(CommandId::NewLayer(), CmdRecordableFlag)
+NewLayerCommand::NewLayerCommand() : CommandWithNewParams(CommandId::NewLayer())
 {
 }
 

src/app/commands/cmd_new_sprite_from_selection.cpp

@@ -39,7 +39,7 @@ protected:
 };
 
 NewSpriteFromSelectionCommand::NewSpriteFromSelectionCommand()
-  : Command(CommandId::NewSpriteFromSelection(), CmdUIOnlyFlag)
+  : Command(CommandId::NewSpriteFromSelection())
 {
 }
 

src/app/commands/cmd_onionskin.cpp

@@ -20,7 +20,7 @@ using namespace gfx;
 
 class ShowOnionSkinCommand : public Command {
 public:
-  ShowOnionSkinCommand() : Command(CommandId::ShowOnionSkin(), CmdUIOnlyFlag) {}
+  ShowOnionSkinCommand() : Command(CommandId::ShowOnionSkin()) {}
 
 protected:
   bool onChecked(Context* context) override

src/app/commands/cmd_open_browser.cpp

@@ -22,6 +22,7 @@ public:
   OpenBrowserCommand();
 
 protected:
+  bool onEnabled(Context* context) override;
   void onLoadParams(const Params& params) override;
   void onExecute(Context* context) override;
   std::string onGetFriendlyName() const override;
@@ -31,10 +32,15 @@ private:
   std::string m_filename;
 };
 
-OpenBrowserCommand::OpenBrowserCommand() : Command(CommandId::OpenBrowser(), CmdUIOnlyFlag)
+OpenBrowserCommand::OpenBrowserCommand() : Command(CommandId::OpenBrowser())
 {
 }
 
+bool OpenBrowserCommand::onEnabled(Context* context)
+{
+  return context->isUIAvailable();
+}
+
 void OpenBrowserCommand::onLoadParams(const Params& params)
 {
   m_filename = params.get("filename");

src/app/commands/cmd_open_file.cpp

@@ -35,7 +35,7 @@
 namespace app {
 
 OpenFileCommand::OpenFileCommand()
-  : Command(CommandId::OpenFile(), CmdRecordableFlag)
+  : Command(CommandId::OpenFile())
   , m_ui(true)
   , m_repeatCheckbox(false)
   , m_oneFrame(false)

src/app/commands/cmd_open_group.cpp

@@ -32,7 +32,7 @@ protected:
   // std::string onGetFriendlyName() const override;
 };
 
-OpenGroupCommand::OpenGroupCommand() : Command(CommandId::OpenGroup(), CmdRecordableFlag)
+OpenGroupCommand::OpenGroupCommand() : Command(CommandId::OpenGroup())
 {
 }
 

src/app/commands/cmd_open_in_folder.cpp

@@ -25,7 +25,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-OpenInFolderCommand::OpenInFolderCommand() : Command(CommandId::OpenInFolder(), CmdUIOnlyFlag)
+OpenInFolderCommand::OpenInFolderCommand() : Command(CommandId::OpenInFolder())
 {
 }
 

src/app/commands/cmd_open_script_folder.cpp

@@ -33,8 +33,7 @@ protected:
   void onExecute(Context* context);
 };
 
-OpenScriptFolderCommand::OpenScriptFolderCommand()
-  : Command(CommandId::OpenScriptFolder(), CmdUIOnlyFlag)
+OpenScriptFolderCommand::OpenScriptFolderCommand() : Command(CommandId::OpenScriptFolder())
 {
 }
 

src/app/commands/cmd_open_with_app.cpp

@@ -25,7 +25,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-OpenWithAppCommand::OpenWithAppCommand() : Command(CommandId::OpenWithApp(), CmdUIOnlyFlag)
+OpenWithAppCommand::OpenWithAppCommand() : Command(CommandId::OpenWithApp())
 {
 }
 

src/app/commands/cmd_options.cpp

@@ -2177,7 +2177,7 @@ private:
   std::string m_installExtensionFilename;
 };
 
-OptionsCommand::OptionsCommand() : Command(CommandId::Options(), CmdUIOnlyFlag)
+OptionsCommand::OptionsCommand() : Command(CommandId::Options())
 {
   Preferences& preferences = Preferences::instance();
 

src/app/commands/cmd_palette_editor.cpp

@@ -11,6 +11,7 @@
 
 #include "app/commands/command.h"
 #include "app/commands/params.h"
+#include "app/context.h"
 #include "app/i18n/strings.h"
 #include "app/ui/color_bar.h"
 #include "base/replace_string.h"
@@ -23,6 +24,7 @@ public:
   PaletteEditorCommand();
 
 protected:
+  bool onEnabled(Context* context) override;
   void onLoadParams(const Params& params) override;
   bool onChecked(Context* context) override;
   void onExecute(Context* context) override;
@@ -34,14 +36,18 @@ private:
   bool m_background;
 };
 
-PaletteEditorCommand::PaletteEditorCommand()
-  : Command(CommandId::PaletteEditor(), CmdRecordableFlag)
+PaletteEditorCommand::PaletteEditorCommand() : Command(CommandId::PaletteEditor())
 {
   m_edit = true;
   m_popup = false;
   m_background = false;
 }
 
+bool PaletteEditorCommand::onEnabled(Context* context)
+{
+  return context->isUIAvailable();
+}
+
 void PaletteEditorCommand::onLoadParams(const Params& params)
 {
   m_edit = (params.empty() || params.get("edit") == "switch" ||

src/app/commands/cmd_palette_size.cpp

@@ -33,17 +33,21 @@ protected:
   void onExecute(Context* context) override;
 
 private:
-  int m_size;
+  int m_size = 0;
+  bool m_ui = true;
 };
 
-PaletteSizeCommand::PaletteSizeCommand() : Command(CommandId::PaletteSize(), CmdRecordableFlag)
+PaletteSizeCommand::PaletteSizeCommand() : Command(CommandId::PaletteSize())
 {
-  m_size = 0;
 }
 
 void PaletteSizeCommand::onLoadParams(const Params& params)
 {
   m_size = params.get_as<int>("size");
+  if (params.has_param("ui"))
+    m_ui = params.get_as<bool>("ui");
+  else
+    m_ui = true;
 }
 
 bool PaletteSizeCommand::onEnabled(Context* context)
@@ -59,7 +63,7 @@ void PaletteSizeCommand::onExecute(Context* context)
   Palette palette(*reader.palette());
   int ncolors = (m_size != 0 ? m_size : palette.size());
 
-  if (m_size == 0 && context->isUIAvailable()) {
+  if (m_size == 0 && m_ui && context->isUIAvailable()) {
     app::gen::PaletteSize window;
     window.colors()->setTextf("%d", ncolors);
     window.openWindowInForeground();

src/app/commands/cmd_paste.cpp

@@ -31,7 +31,7 @@ private:
   std::unique_ptr<gfx::Point> m_position;
 };
 
-PasteCommand::PasteCommand() : Command(CommandId::Paste(), CmdUIOnlyFlag)
+PasteCommand::PasteCommand() : Command(CommandId::Paste())
 {
 }
 

src/app/commands/cmd_paste_text.cpp

@@ -43,13 +43,13 @@ protected:
   void onExecute(Context* ctx) override;
 };
 
-PasteTextCommand::PasteTextCommand() : Command(CommandId::PasteText(), CmdUIOnlyFlag)
+PasteTextCommand::PasteTextCommand() : Command(CommandId::PasteText())
 {
 }
 
 bool PasteTextCommand::onEnabled(Context* ctx)
 {
-  return ctx->checkFlags(ContextFlags::ActiveDocumentIsWritable |
+  return ctx->isUIAvailable() && ctx->checkFlags(ContextFlags::ActiveDocumentIsWritable |
                                                  ContextFlags::ActiveLayerIsEditable);
 }
 

src/app/commands/cmd_pixel_perfect_mode.cpp

@@ -28,8 +28,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-PixelPerfectModeCommand::PixelPerfectModeCommand()
-  : Command(CommandId::PixelPerfectMode(), CmdUIOnlyFlag)
+PixelPerfectModeCommand::PixelPerfectModeCommand() : Command(CommandId::PixelPerfectMode())
 {
 }
 

src/app/commands/cmd_play_animation.cpp

@@ -34,13 +34,14 @@ protected:
   void onExecute(Context* ctx) override;
 };
 
-PlayAnimationCommand::PlayAnimationCommand() : Command(CommandId::PlayAnimation(), CmdUIOnlyFlag)
+PlayAnimationCommand::PlayAnimationCommand() : Command(CommandId::PlayAnimation())
 {
 }
 
 bool PlayAnimationCommand::onEnabled(Context* ctx)
 {
-  return ctx->checkFlags(ContextFlags::ActiveDocumentIsReadable | ContextFlags::HasActiveSprite);
+  return ctx->isUIAvailable() &&
+         ctx->checkFlags(ContextFlags::ActiveDocumentIsReadable | ContextFlags::HasActiveSprite);
 }
 
 bool PlayAnimationCommand::onChecked(Context* ctx)
@@ -85,13 +86,14 @@ protected:
 };
 
 PlayPreviewAnimationCommand::PlayPreviewAnimationCommand()
-  : Command(CommandId::PlayPreviewAnimation(), CmdUIOnlyFlag)
+  : Command(CommandId::PlayPreviewAnimation())
 {
 }
 
 bool PlayPreviewAnimationCommand::onEnabled(Context* ctx)
 {
-  return ctx->checkFlags(ContextFlags::ActiveDocumentIsWritable | ContextFlags::HasActiveSprite);
+  return ctx->isUIAvailable() &&
+         ctx->checkFlags(ContextFlags::ActiveDocumentIsWritable | ContextFlags::HasActiveSprite);
 }
 
 bool PlayPreviewAnimationCommand::onChecked(Context* ctx)

src/app/commands/cmd_refresh.cpp

@@ -39,7 +39,7 @@ private:
   void postCancelMenuLoop();
 };
 
-RefreshCommand::RefreshCommand() : Command(CommandId::Refresh(), CmdUIOnlyFlag)
+RefreshCommand::RefreshCommand() : Command(CommandId::Refresh())
 {
 }
 

src/app/commands/cmd_remove_frame.cpp

@@ -29,7 +29,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-RemoveFrameCommand::RemoveFrameCommand() : Command(CommandId::RemoveFrame(), CmdRecordableFlag)
+RemoveFrameCommand::RemoveFrameCommand() : Command(CommandId::RemoveFrame())
 {
 }
 

src/app/commands/cmd_remove_frame_tag.cpp

@@ -38,7 +38,7 @@ private:
 };
 
 RemoveFrameTagCommand::RemoveFrameTagCommand()
-  : Command(CommandId::RemoveFrameTag(), CmdRecordableFlag)
+  : Command(CommandId::RemoveFrameTag())
   , m_tagId(NullId)
 {
 }

src/app/commands/cmd_remove_layer.cpp

@@ -105,7 +105,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-RemoveLayerCommand::RemoveLayerCommand() : Command(CommandId::RemoveLayer(), CmdRecordableFlag)
+RemoveLayerCommand::RemoveLayerCommand() : Command(CommandId::RemoveLayer())
 {
 }
 

src/app/commands/cmd_remove_slice.cpp

@@ -41,7 +41,7 @@ private:
   ObjectId m_sliceId;
 };
 
-RemoveSliceCommand::RemoveSliceCommand() : Command(CommandId::RemoveSlice(), CmdRecordableFlag)
+RemoveSliceCommand::RemoveSliceCommand() : Command(CommandId::RemoveSlice())
 {
 }
 
@@ -117,6 +117,7 @@ void RemoveSliceCommand::onExecute(Context* context)
     document->notifyGeneralUpdate();
   }
 
+  if (context->isUIAvailable()) {
     StatusBar::instance()->invalidate();
     if (!sliceName.empty()) {
       StatusBar::instance()->showTip(1000, Strings::remove_slice_x_removed(sliceName));
@@ -125,6 +126,7 @@ void RemoveSliceCommand::onExecute(Context* context)
       StatusBar::instance()->showTip(1000,
                                      Strings::remove_slice_n_slices_removed(slicesToDelete.size()));
     }
+  }
 }
 
 Command* CommandFactory::createRemoveSliceCommand()

src/app/commands/cmd_reopen_closed_file.cpp

@@ -27,8 +27,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-ReopenClosedFileCommand::ReopenClosedFileCommand()
-  : Command(CommandId::ReopenClosedFile(), CmdUIOnlyFlag)
+ReopenClosedFileCommand::ReopenClosedFileCommand() : Command(CommandId::ReopenClosedFile())
 {
 }
 

src/app/commands/cmd_repeat_last_export.cpp

@@ -27,8 +27,7 @@ protected:
   virtual void onExecute(Context* context) override;
 };
 
-RepeatLastExportCommand::RepeatLastExportCommand()
-  : Command(CommandId::RepeatLastExport(), CmdRecordableFlag)
+RepeatLastExportCommand::RepeatLastExportCommand() : Command(CommandId::RepeatLastExport())
 {
 }
 

src/app/commands/cmd_reselect_mask.cpp

@@ -28,7 +28,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-ReselectMaskCommand::ReselectMaskCommand() : Command(CommandId::ReselectMask(), CmdRecordableFlag)
+ReselectMaskCommand::ReselectMaskCommand() : Command(CommandId::ReselectMask())
 {
 }
 

src/app/commands/cmd_reverse_frames.cpp

@@ -27,7 +27,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-ReverseFramesCommand::ReverseFramesCommand() : Command(CommandId::ReverseFrames(), CmdUIOnlyFlag)
+ReverseFramesCommand::ReverseFramesCommand() : Command(CommandId::ReverseFrames())
 {
 }
 

src/app/commands/cmd_rotate.cpp

@@ -166,7 +166,7 @@ protected:
   }
 };
 
-RotateCommand::RotateCommand() : Command(CommandId::Rotate(), CmdRecordableFlag)
+RotateCommand::RotateCommand() : Command(CommandId::Rotate())
 {
   m_ui = true;
   m_flipMask = false;
@@ -190,6 +190,10 @@ void RotateCommand::onLoadParams(const Params& params)
 
 bool RotateCommand::onEnabled(Context* context)
 {
+  // Because we use the toolbox & editor to transform the selection, this won't work without a UI
+  if (m_flipMask && !context->isUIAvailable())
+    return false;
+
   return context->checkFlags(ContextFlags::ActiveDocumentIsWritable |
                              ContextFlags::HasActiveSprite);
 }

src/app/commands/cmd_run_script.cpp

@@ -46,7 +46,7 @@ private:
   Params m_params;
 };
 
-RunScriptCommand::RunScriptCommand() : Command(CommandId::RunScript(), CmdRecordableFlag)
+RunScriptCommand::RunScriptCommand() : Command(CommandId::RunScript())
 {
 }
 

src/app/commands/cmd_save_file.cpp

@@ -86,8 +86,7 @@ private:
 
 //////////////////////////////////////////////////////////////////////
 
-SaveFileBaseCommand::SaveFileBaseCommand(const char* id, CommandFlags flags)
-  : CommandWithNewParams<SaveFileParams>(id, flags)
+SaveFileBaseCommand::SaveFileBaseCommand(const char* id) : CommandWithNewParams<SaveFileParams>(id)
 {
 }
 
@@ -269,7 +268,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-SaveFileCommand::SaveFileCommand() : SaveFileBaseCommand(CommandId::SaveFile(), CmdRecordableFlag)
+SaveFileCommand::SaveFileCommand() : SaveFileBaseCommand(CommandId::SaveFile())
 {
 }
 
@@ -310,8 +309,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-SaveFileAsCommand::SaveFileAsCommand()
-  : SaveFileBaseCommand(CommandId::SaveFileAs(), CmdRecordableFlag)
+SaveFileAsCommand::SaveFileAsCommand() : SaveFileBaseCommand(CommandId::SaveFileAs())
 {
 }
 
@@ -335,8 +333,7 @@ private:
   void moveToUndoState(Doc* doc, const undo::UndoState* state);
 };
 
-SaveFileCopyAsCommand::SaveFileCopyAsCommand()
-  : SaveFileBaseCommand(CommandId::SaveFileCopyAs(), CmdRecordableFlag)
+SaveFileCopyAsCommand::SaveFileCopyAsCommand() : SaveFileBaseCommand(CommandId::SaveFileCopyAs())
 {
 }
 

src/app/commands/cmd_save_file.h

@@ -67,7 +67,7 @@ public:
   enum class SaveInBackground { Off, On };
   enum class ResizeOnTheFly { Off, On };
 
-  SaveFileBaseCommand(const char* id, CommandFlags flags);
+  SaveFileBaseCommand(const char* id);
 
 protected:
   void onLoadParams(const Params& params) override;

src/app/commands/cmd_save_mask.cpp

@@ -15,13 +15,20 @@
 #include "app/i18n/strings.h"
 #include "app/util/msk_file.h"
 #include "base/fs.h"
+#include "doc/file/act_file.h"
 #include "doc/mask.h"
 #include "doc/sprite.h"
+#include "new_params.h"
 #include "ui/alert.h"
 
 namespace app {
 
-class SaveMaskCommand : public Command {
+struct SaveMaskParams : public NewParams {
+  Param<bool> ui{ this, true, "ui" };
+  Param<std::string> filename{ this, "default.msk", "filename" };
+};
+
+class SaveMaskCommand : public CommandWithNewParams<SaveMaskParams> {
 public:
   SaveMaskCommand();
 
@@ -30,7 +37,7 @@ protected:
   void onExecute(Context* context) override;
 };
 
-SaveMaskCommand::SaveMaskCommand() : Command(CommandId::SaveMask(), CmdUIOnlyFlag)
+SaveMaskCommand::SaveMaskCommand() : CommandWithNewParams(CommandId::SaveMask())
 {
 }
 
@@ -41,21 +48,27 @@ bool SaveMaskCommand::onEnabled(Context* context)
 
 void SaveMaskCommand::onExecute(Context* context)
 {
+  const bool ui = (params().ui() && context->isUIAvailable());
+  std::string filename = params().filename();
+
   const ContextReader reader(context);
   const Doc* document(reader.document());
 
+  if (ui) {
     base::paths exts = { "msk" };
     base::paths selFilename;
     if (!app::show_file_selector(Strings::save_selection_title(),
-                               "default.msk",
+                                 filename,
                                  exts,
                                  FileSelectorType::Save,
                                  selFilename))
       return;
 
-  std::string filename = selFilename.front();
+    filename = selFilename.front();
+  }
 
-  if (save_msk_file(document->mask(), filename.c_str()) != 0)
+  const bool result = save_msk_file(document->mask(), filename.c_str()) != 0;
+  if (result && ui)
     ui::Alert::show(Strings::alerts_error_saving_file(filename));
 }
 

src/app/commands/cmd_save_palette.cpp

@@ -21,48 +21,50 @@
 #include "app/modules/palettes.h"
 #include "base/fs.h"
 #include "doc/palette.h"
+#include "new_params.h"
 #include "ui/alert.h"
 
 namespace app {
 
 using namespace ui;
 
-class SavePaletteCommand : public Command {
+struct SavePaletteParams : public NewParams {
+  Param<bool> ui{ this, true, "ui" };
+  Param<std::string> filename{ this, "", "filename" };
+  Param<std::string> preset{ this, "", "preset" };
+  Param<bool> saveAsPreset{ this, false, "saveAsPreset" };
+  Param<int> columns{ this, 16, "columns" };
+};
+
+class SavePaletteCommand : public CommandWithNewParams<SavePaletteParams> {
 public:
   SavePaletteCommand();
 
 protected:
-  void onLoadParams(const Params& params) override;
-  void onExecute(Context* context) override;
+  void onExecute(Context* ctx) override;
   std::string onGetFriendlyName() const override;
-
-private:
-  std::string m_preset;
-  bool m_saveAsPreset = false;
 };
 
-SavePaletteCommand::SavePaletteCommand() : Command(CommandId::SavePalette(), CmdRecordableFlag)
+SavePaletteCommand::SavePaletteCommand() : CommandWithNewParams(CommandId::SavePalette())
 {
 }
 
-void SavePaletteCommand::onLoadParams(const Params& params)
-{
-  m_preset = params.get("preset");
-  m_saveAsPreset = (params.get("saveAsPreset") == "true");
-}
-
 void SavePaletteCommand::onExecute(Context* ctx)
 {
   const doc::Palette* palette = get_current_palette();
+  const bool ui = (params().ui() && ctx->isUIAvailable());
   std::string filename;
 
-  if (!m_preset.empty()) {
-    filename = get_preset_palette_filename(m_preset, ".ase");
+  if (!params().preset().empty()) {
+    filename = get_preset_palette_filename(params().preset(), ".ase");
   }
   else {
     base::paths exts = get_writable_palette_extensions();
+
+    if (ui) {
       base::paths selFilename;
-    std::string initialPath = (m_saveAsPreset ? get_preset_palettes_dir() : "");
+      std::string initialPath = params().saveAsPreset() ? get_preset_palettes_dir() :
+                                                          params().filename();
       if (!app::show_file_selector(Strings::save_palette_title(),
                                    initialPath,
                                    exts,
@@ -71,6 +73,10 @@ void SavePaletteCommand::onExecute(Context* ctx)
         return;
 
       filename = selFilename.front();
+    }
+    else {
+      filename = params().filename();
+    }
 
     // Check that the file format supports saving indexed images/color
     // palettes (e.g. if the user specified .jpg we should show that
@@ -84,28 +90,31 @@ void SavePaletteCommand::onExecute(Context* ctx)
     }
   }
   gfx::ColorSpaceRef colorSpace = nullptr;
-  auto activeDoc = ctx->activeDocument();
+  auto* activeDoc = ctx->activeDocument();
   if (activeDoc)
     colorSpace = activeDoc->sprite()->colorSpace();
 
-  if (!save_palette(filename.c_str(), palette, 16, colorSpace)) // TODO 16 should be configurable
+  const bool result = save_palette(filename.c_str(), palette, params().columns(), colorSpace);
+
+  if (ui && !result)
     ui::Alert::show(Strings::alerts_error_saving_file(filename));
 
-  if (m_preset == get_default_palette_preset_name()) {
+  if (params().preset() == get_default_palette_preset_name()) {
     set_default_palette(palette);
     if (!activeDoc)
       set_current_palette(palette, false);
   }
-  if (m_saveAsPreset) {
+
+  if (params().saveAsPreset()) {
     App::instance()->PalettePresetsChange();
   }
 }
 
 std::string SavePaletteCommand::onGetFriendlyName() const
 {
-  if (m_preset == "default")
+  if (params().preset() == get_default_palette_preset_name())
     return Strings::commands_SavePaletteAsDefault();
-  else if (m_saveAsPreset)
+  if (params().saveAsPreset())
     return Strings::commands_SavePaletteAsPreset();
   return Command::onGetFriendlyName();
 }

src/app/commands/cmd_scroll.cpp

@@ -36,7 +36,7 @@ private:
   MoveThing m_moveThing;
 };
 
-ScrollCommand::ScrollCommand() : Command(CommandId::Scroll(), CmdUIOnlyFlag)
+ScrollCommand::ScrollCommand() : Command(CommandId::Scroll())
 {
 }
 
@@ -47,7 +47,7 @@ void ScrollCommand::onLoadParams(const Params& params)
 
 bool ScrollCommand::onEnabled(Context* context)
 {
-  return context->checkFlags(ContextFlags::HasActiveDocument);
+  return context->isUIAvailable() && context->checkFlags(ContextFlags::HasActiveDocument);
 }
 
 void ScrollCommand::onExecute(Context* context)