From 7b6229289d144d1f24feb53cda31973a64e34ff8 Mon Sep 17 00:00:00 2001
From: YuSanka <yusanka@gmail.com>
Date: Mon, 8 Jul 2019 10:57:35 +0200
Subject: [PATCH] Added undo/redo to the "Edit" menu

---
 src/slic3r/GUI/MainFrame.cpp |  8 ++++++++
 src/slic3r/GUI/Plater.cpp    | 10 ++++++++++
 src/slic3r/GUI/Plater.hpp    |  2 ++
 3 files changed, 20 insertions(+)

diff --git a/src/slic3r/GUI/MainFrame.cpp b/src/slic3r/GUI/MainFrame.cpp
index d800f6f380..67b336a0e0 100644
--- a/src/slic3r/GUI/MainFrame.cpp
+++ b/src/slic3r/GUI/MainFrame.cpp
@@ -502,6 +502,14 @@ void MainFrame::init_menubar()
             _(L("Deletes all objects")), [this](wxCommandEvent&) { m_plater->reset_with_confirm(); },
             menu_icon("delete_all_menu"), nullptr, [this](){return can_delete_all(); }, this);
 
+        editMenu->AppendSeparator();
+        append_menu_item(editMenu, wxID_ANY, _(L("&Undo")) + sep + GUI::shortkey_ctrl_prefix() + sep_space + "Z",
+            _(L("Undo")), [this](wxCommandEvent&) { m_plater->undo(); },
+            "undo", nullptr, [this](){return m_plater->can_undo(); }, this);
+        append_menu_item(editMenu, wxID_ANY, _(L("&Redo")) + sep + GUI::shortkey_ctrl_prefix() + sep_space + "Y",
+            _(L("Redo")), [this](wxCommandEvent&) { m_plater->redo(); },
+            "undo", nullptr, [this](){return m_plater->can_redo(); }, this);
+
         editMenu->AppendSeparator();
         append_menu_item(editMenu, wxID_ANY, _(L("&Copy")) + sep + GUI::shortkey_ctrl_prefix() + sep_space + "C",
             _(L("Copy selection to clipboard")), [this](wxCommandEvent&) { m_plater->copy_selection_to_clipboard(); },
diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index aa7a54286e..6ac58eb841 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -4405,6 +4405,16 @@ bool Plater::can_copy_to_clipboard() const
     return true;
 }
 
+bool Plater::can_undo() const
+{
+    return p->undo_redo_stack.has_undo_snapshot();
+}
+
+bool Plater::can_redo() const
+{
+    return p->undo_redo_stack.has_redo_snapshot();
+}
+
 SuppressBackgroundProcessingUpdate::SuppressBackgroundProcessingUpdate() :
     m_was_running(wxGetApp().plater()->is_background_process_running())
 {
diff --git a/src/slic3r/GUI/Plater.hpp b/src/slic3r/GUI/Plater.hpp
index d38957b3ae..0be465f53c 100644
--- a/src/slic3r/GUI/Plater.hpp
+++ b/src/slic3r/GUI/Plater.hpp
@@ -222,6 +222,8 @@ public:
     bool can_layers_editing() const;
     bool can_paste_from_clipboard() const;
     bool can_copy_to_clipboard() const;
+    bool can_undo() const;
+    bool can_redo() const;
 
     void msw_rescale();