Add history command service boundary

src/app_core/main_toolbar.h

@@ -41,6 +41,7 @@ struct MainToolbarPlan {
     bool records_undo = false;
     bool marks_unsaved = false;
     bool no_op = false;
+    HistoryUiPlan history;
     DocumentCanvasClearPlan canvas_clear;
 };
 
@@ -50,9 +51,9 @@ public:
 
     virtual void show_open_dialog() = 0;
     virtual void show_save_dialog() = 0;
-    virtual void invoke_undo() = 0;
-    virtual void invoke_redo() = 0;
-    virtual void clear_history() = 0;
+    virtual void invoke_undo(const HistoryUiPlan& plan) = 0;
+    virtual void invoke_redo(const HistoryUiPlan& plan) = 0;
+    virtual void clear_history(const HistoryUiPlan& plan) = 0;
     virtual void clear_canvas(const DocumentCanvasClearPlan& plan) = 0;
     virtual void show_message_box() = 0;
     virtual void show_settings_dialog() = 0;
@@ -92,6 +93,7 @@ public:
         plan.updates_memory_label = history.value().updates_memory_label;
         plan.updates_title = history.value().updates_title;
         plan.no_op = history.value().no_op;
+        plan.history = history.value();
         return pp::foundation::Result<MainToolbarPlan>::success(plan);
     }
 
@@ -108,6 +110,7 @@ public:
         plan.updates_memory_label = history.value().updates_memory_label;
         plan.updates_title = history.value().updates_title;
         plan.no_op = history.value().no_op;
+        plan.history = history.value();
         return pp::foundation::Result<MainToolbarPlan>::success(plan);
     }
 
@@ -123,6 +126,7 @@ public:
         plan.label = history.value().clears_history ? "Clear History" : "Clear History (Empty)";
         plan.updates_memory_label = history.value().updates_memory_label;
         plan.no_op = history.value().no_op;
+        plan.history = history.value();
         return pp::foundation::Result<MainToolbarPlan>::success(plan);
     }
 
@@ -171,13 +175,13 @@ public:
         services.show_save_dialog();
         return pp::foundation::Status::success();
     case MainToolbarAction::invoke_undo:
-        services.invoke_undo();
+        services.invoke_undo(plan.history);
         return pp::foundation::Status::success();
     case MainToolbarAction::invoke_redo:
-        services.invoke_redo();
+        services.invoke_redo(plan.history);
         return pp::foundation::Status::success();
     case MainToolbarAction::clear_history:
-        services.clear_history();
+        services.clear_history(plan.history);
         return pp::foundation::Status::success();
     case MainToolbarAction::clear_canvas:
         services.clear_canvas(plan.canvas_clear);