5.0

1 files changed, 81 insertions, 0 deletions

diff --git a/wx+/context_menu.h b/wx+/context_menu.h
new file mode 100644
index 00000000..894da832
--- /dev/null
+++ b/wx+/context_menu.h
@@ -0,0 +1,81 @@
+// **************************************************************************
+// * This file is part of the FreeFileSync project. It is distributed under *
+// * GNU General Public License: http://www.gnu.org/licenses/gpl.html       *
+// * Copyright (C) ZenJu (zhnmju123 AT gmx DOT de) - All Rights Reserved    *
+// **************************************************************************
+
+#ifndef CONTEXT_HEADER_18047302153418174632141234
+#define CONTEXT_HEADER_18047302153418174632141234
+
+#include <vector>
+#include <functional>
+#include <wx/menu.h>
+#include <wx/app.h>
+
+/*
+A context menu supporting C++11 lambda callbacks!
+
+Usage:
+	ContextMenu menu;
+	menu.addItem(L"Some Label", [&]{ ...do something... }); -> capture by reference is fine, as long as captured variables have at least scope of ContextMenu::show()!
+	...
+	menu.popup(wnd);
+*/
+
+namespace zen
+{
+class ContextMenu : private wxEvtHandler
+{
+public:
+    void addItem(const wxString& label, const std::function<void()>& command, const wxBitmap* bmp = NULL, bool enabled = true)
+    {
+        wxMenuItem* newItem = new wxMenuItem(&menu, wxID_ANY, label);
+        if (bmp) newItem->SetBitmap(*bmp);
+        if (!enabled) newItem->Enable(false);
+        menu.Append(newItem); //do NOT append item before setting bitmap! wxWidgets screws up for yet another crappy reason
+        menu.Connect(newItem->GetId(), wxEVT_COMMAND_MENU_SELECTED, wxCommandEventHandler(ContextMenu::onSelection), new GenericCommand(command), /*pass ownership*/ this);
+    }
+
+    void addCheckBox(const wxString& label, const std::function<void()>& command, bool checked, bool enabled = true)
+    {
+        wxMenuItem* newItem = menu.AppendCheckItem(wxID_ANY, label);
+        newItem->Check(checked);
+        if (!enabled) newItem->Enable(false);
+        menu.Connect(newItem->GetId(), wxEVT_COMMAND_MENU_SELECTED, wxCommandEventHandler(ContextMenu::onSelection), new GenericCommand(command), /*pass ownership*/ this);
+    }
+
+    void addRadio(const wxString& label, const std::function<void()>& command, bool checked, bool enabled = true)
+    {
+        wxMenuItem* newItem = menu.AppendRadioItem(wxID_ANY, label);
+        newItem->Check(checked);
+        if (!enabled) newItem->Enable(false);
+        menu.Connect(newItem->GetId(), wxEVT_COMMAND_MENU_SELECTED, wxCommandEventHandler(ContextMenu::onSelection), new GenericCommand(command), /*pass ownership*/ this);
+    }
+
+    void addSeparator() { menu.AppendSeparator(); }
+
+    void popup(wxWindow& wnd) //show popup menu + process lambdas
+    {
+        wnd.PopupMenu(&menu);
+        wxTheApp->ProcessPendingEvents(); //make sure lambdas are evaluated before going out of scope;
+        //although all events seem to be processed within wxWindows::PopupMenu, we shouldn't trust wxWidgets in this regard
+    }
+
+private:
+    void onSelection(wxCommandEvent& event)
+    {
+        if (auto cmd = dynamic_cast<GenericCommand*>(event.m_callbackUserData))
+            (cmd->fun_)();
+    }
+
+    struct GenericCommand : public wxObject
+    {
+        GenericCommand(const std::function<void()>& fun) : fun_(fun) {}
+        std::function<void()> fun_;
+    };
+
+    wxMenu menu;
+};
+}
+
+#endif //CONTEXT_HEADER_18047302153418174632141234