From 67e67ea42fcfd2a0805fd96f44a2435992a3320e Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Wed, 23 May 2018 23:51:09 +0100
Subject: Try another way of fixing accelerators stealing text control arrow
 keys (#1263).

---
 src/wx/dcp_panel.cc     |  3 +++
 src/wx/focus_manager.cc | 55 +++++++++++++++++++++++++++++++++++++++++++++++++
 src/wx/focus_manager.h  | 51 +++++++++++++++++++++++++++++++++++++++++++++
 src/wx/wscript          |  1 +
 4 files changed, 110 insertions(+)
 create mode 100644 src/wx/focus_manager.cc
 create mode 100644 src/wx/focus_manager.h

(limited to 'src/wx')

diff --git a/src/wx/dcp_panel.cc b/src/wx/dcp_panel.cc
index 397a29d48..f2783af6b 100644
--- a/src/wx/dcp_panel.cc
+++ b/src/wx/dcp_panel.cc
@@ -23,6 +23,7 @@
 #include "key_dialog.h"
 #include "isdcf_metadata_dialog.h"
 #include "audio_dialog.h"
+#include "focus_manager.h"
 #include "lib/ratio.h"
 #include "lib/config.h"
 #include "lib/dcp_content_type.h"
@@ -74,6 +75,8 @@ DCPPanel::DCPPanel (wxNotebook* n, boost::shared_ptr<Film> film)
 	grid->Add (_name, wxGBPosition(r, 1), wxDefaultSpan, wxEXPAND | wxLEFT | wxRIGHT);
 	++r;
 
+	FocusManager::instance()->add(_name);
+
 	int flags = wxALIGN_CENTER_VERTICAL;
 #ifdef __WXOSX__
 	flags |= wxALIGN_RIGHT;
diff --git a/src/wx/focus_manager.cc b/src/wx/focus_manager.cc
new file mode 100644
index 000000000..f4f23cb28
--- /dev/null
+++ b/src/wx/focus_manager.cc
@@ -0,0 +1,55 @@
+/*
+    Copyright (C) 2018 Carl Hetherington <cth@carlh.net>
+
+    This file is part of DCP-o-matic.
+
+    DCP-o-matic is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    DCP-o-matic is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#include "focus_manager.h"
+#include <wx/textctrl.h>
+
+FocusManager* FocusManager::_instance;
+
+FocusManager *
+FocusManager::instance()
+{
+	if (!_instance) {
+		_instance = new FocusManager();
+	}
+
+	return _instance;
+}
+
+void
+FocusManager::set_focus (wxFocusEvent& ev)
+{
+	SetFocus();
+	ev.Skip();
+}
+
+void
+FocusManager::kill_focus (wxFocusEvent& ev)
+{
+	KillFocus();
+	ev.Skip();
+}
+
+void
+FocusManager::add(wxTextCtrl* c)
+{
+	c->Bind(wxEVT_SET_FOCUS, boost::bind(&FocusManager::set_focus, this, _1));
+	c->Bind(wxEVT_KILL_FOCUS, boost::bind(&FocusManager::kill_focus, this, _1));
+}
diff --git a/src/wx/focus_manager.h b/src/wx/focus_manager.h
new file mode 100644
index 000000000..3c91c22fa
--- /dev/null
+++ b/src/wx/focus_manager.h
@@ -0,0 +1,51 @@
+/*
+    Copyright (C) 2018 Carl Hetherington <cth@carlh.net>
+
+    This file is part of DCP-o-matic.
+
+    DCP-o-matic is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    DCP-o-matic is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#include <boost/signals2.hpp>
+
+class wxTextCtrl;
+class wxFocusEvent;
+
+/** @class FocusManager class
+ *  @brief A central point for notifications about when wxTextCtrls get focus in the main window.
+ *
+ *  This allows us to turn off accelerators for the duration of the focus so that they don't steal
+ *  keypresses.  It's a hack but the only way I could make it work on all platforms (looking for
+ *  the focussed thing and doing ev.Skip() if it's a wxTextCtrl did not work for me on Windows:
+ *  ev.Skip() did not cause the event to be delivered).
+ */
+class FocusManager
+{
+public:
+	/** emitted when any add()ed TextCtrl gets focus */
+	boost::signals2::signal<void ()> SetFocus;
+	/** emitted when any add()ed TextCtrl loses focus */
+	boost::signals2::signal<void ()> KillFocus;
+
+	void add(wxTextCtrl* c);
+
+	static FocusManager* instance();
+
+private:
+	void set_focus(wxFocusEvent &);
+	void kill_focus(wxFocusEvent &);
+
+	static FocusManager* _instance;
+};
diff --git a/src/wx/wscript b/src/wx/wscript
index 476cd468a..35861db00 100644
--- a/src/wx/wscript
+++ b/src/wx/wscript
@@ -57,6 +57,7 @@ sources = """
           film_viewer.cc
           filter_dialog.cc
           filter_editor.cc
+          focus_manager.cc
           fonts_dialog.cc
           font_files_dialog.cc
           full_config_dialog.cc
-- 
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