Centralize legacy history bridge

src/node_canvas.cpp

@@ -7,8 +7,8 @@
 
 #include "app_core/canvas_hotkey.h"
 #include "app_core/canvas_tool_ui.h"
-#include "app_core/history_ui.h"
 #include "app.h"
+#include "legacy_history_services.h"
 #include "log.h"
 #include "node_canvas.h"
 #include "node_image_texture.h"
@@ -103,24 +103,6 @@ public:
     }
 };
 
-class LegacyNodeCanvasHistoryServices final : public pp::app::HistoryUiServices {
-public:
-    void invoke_undo() override
-    {
-        ActionManager::undo();
-    }
-
-    void invoke_redo() override
-    {
-        ActionManager::redo();
-    }
-
-    void clear_history() override
-    {
-        ActionManager::clear();
-    }
-};
-
 class LegacyNodeCanvasHotkeyServices final : public pp::app::CanvasHotkeyServices {
 public:
     pp::foundation::Status execute_tool(const pp::app::CanvasToolPlan& plan) override
@@ -131,8 +113,7 @@ public:
 
     pp::foundation::Status execute_history(const pp::app::HistoryUiPlan& plan) override
     {
-        LegacyNodeCanvasHistoryServices services;
-        return pp::app::execute_history_ui_plan(plan, services);
+        return pp::panopainter::execute_legacy_history_plan(plan);
     }
 
     void save_document(pp::app::DocumentSaveIntent intent) override
@@ -191,8 +172,9 @@ pp::app::CanvasHotkeyState canvas_hotkey_state(bool mouse_focused, int touch_fin
     state.ctrl_down = App::I && App::I->keys[(int)kKey::KeyCtrl];
     state.shift_down = App::I && App::I->keys[(int)kKey::KeyShift];
     state.mouse_focused = mouse_focused;
-    state.undo_count = static_cast<int>(ActionManager::I.m_actions.size());
-    state.redo_count = static_cast<int>(ActionManager::I.m_redos.size());
+    const auto history = pp::panopainter::legacy_history_snapshot();
+    state.undo_count = history.undo_count;
+    state.redo_count = history.redo_count;
     state.touch_finger_count = touch_finger_count;
     return state;
 }