Set Delete button sensitivity correctly.

[dcpomatic.git] / src / tools / dcpomatic_playlist.cc

diff --git a/src/tools/dcpomatic_playlist.cc b/src/tools/dcpomatic_playlist.cc
index bc1f78dc36432935ca539bc2010ba3df3f514212..3e3bd02669cc8e359c855126608b66a69e551d08 100644 (file)
--- a/src/tools/dcpomatic_playlist.cc
+++ b/src/tools/dcpomatic_playlist.cc
@@ -136,6 +136,8 @@ public:
                _list->Bind (wxEVT_COMMAND_LIST_ITEM_DESELECTED, bind(&PlaylistList::selection_changed, this));
                _new->Bind (wxEVT_BUTTON, bind(&PlaylistList::new_playlist, this));
                _delete->Bind (wxEVT_BUTTON, bind(&PlaylistList::delete_playlist, this));
+
+               setup_sensitivity();
        }
 
        wxSizer* sizer ()
@@ -155,6 +157,11 @@ public:
        boost::signals2::signal<void (shared_ptr<SignalSPL>)> Edit;
 
 private:
+       void setup_sensitivity()
+       {
+               _delete->Enable(static_cast<bool>(selected()));
+       }
+
        void add_playlist_to_view (shared_ptr<const SignalSPL> playlist)
        {
                wxListItem item;
@@ -226,10 +233,20 @@ private:
                _list->SetItemState (_list->GetItemCount() - 1, wxLIST_STATE_SELECTED, wxLIST_STATE_SELECTED);
        }
 
-       void delete_playlist ()
+       boost::optional<int> selected() const
        {
-               long int selected = _list->GetNextItem (-1, wxLIST_NEXT_ALL, wxLIST_STATE_SELECTED);
+               long int selected = _list->GetNextItem(-1, wxLIST_NEXT_ALL, wxLIST_STATE_SELECTED);
                if (selected < 0 || selected >= int(_playlists.size())) {
+                       return {};
+               }
+
+               return selected;
+       }
+
+       void delete_playlist ()
+       {
+               auto index = selected();
+               if (!index) {
                        return;
                }
 
@@ -238,11 +255,11 @@ private:
                        return;
                }
 
-               boost::filesystem::remove (*dir / (_playlists[selected]->id() + ".xml"));
-               _list->DeleteItem (selected);
-               _playlists.erase (_playlists.begin() + selected);
+               boost::filesystem::remove(*dir / (_playlists[*index]->id() + ".xml"));
+               _list->DeleteItem(*index);
+               _playlists.erase(_playlists.begin() + *index);
 
-               Edit (shared_ptr<SignalSPL>());
+               Edit(shared_ptr<SignalSPL>());
        }
 
        void selection_changed ()
@@ -253,6 +270,8 @@ private:
                } else {
                        Edit (_playlists[selected]);
                }
+
+               setup_sensitivity();
        }
 
        wxBoxSizer* _sizer;
@@ -323,6 +342,8 @@ public:
                _down->Bind (wxEVT_BUTTON, bind(&PlaylistContent::down_clicked, this));
                _add->Bind (wxEVT_BUTTON, bind(&PlaylistContent::add_clicked, this));
                _remove->Bind (wxEVT_BUTTON, bind(&PlaylistContent::remove_clicked, this));
+
+               setup_sensitivity();
        }
 
        wxSizer* sizer ()