From 56a41b934710a23935cf1b2b5f3e0dfad9720b51 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Sat, 26 Mar 2016 14:54:10 +0100
Subject: add "revert" button to lua script window

---
 gtk2_ardour/luawindow.cc | 23 +++++++++++++++++++----
 gtk2_ardour/luawindow.h  |  4 +++-
 2 files changed, 22 insertions(+), 5 deletions(-)

diff --git a/gtk2_ardour/luawindow.cc b/gtk2_ardour/luawindow.cc
index 15c7fb69a6..3bc3a4741e 100644
--- a/gtk2_ardour/luawindow.cc
+++ b/gtk2_ardour/luawindow.cc
@@ -96,6 +96,7 @@ LuaWindow::LuaWindow ()
 	, _btn_open (_("Import"))
 	, _btn_save (_("Save"))
 	, _btn_delete (_("Delete"))
+	, _btn_revert (_("Revert"))
 	, _current_buffer ()
 {
 	set_name ("Lua");
@@ -120,10 +121,12 @@ LuaWindow::LuaWindow ()
 	_btn_open.signal_clicked.connect (sigc::mem_fun(*this, &LuaWindow::import_script));
 	_btn_save.signal_clicked.connect (sigc::mem_fun(*this, &LuaWindow::save_script));
 	_btn_delete.signal_clicked.connect (sigc::mem_fun(*this, &LuaWindow::delete_script));
+	_btn_revert.signal_clicked.connect (sigc::mem_fun(*this, &LuaWindow::revert_script));
 
 	_btn_open.set_sensitive (false); // TODO
 	_btn_save.set_sensitive (false);
 	_btn_delete.set_sensitive (false);
+	_btn_revert.set_sensitive (false);
 
 	// layout
 
@@ -143,6 +146,7 @@ LuaWindow::LuaWindow ()
 	hbox->pack_start (_btn_open, false, false, 2);
 	hbox->pack_start (_btn_save, false, false, 2);
 	hbox->pack_start (_btn_delete, false, false, 2);
+	hbox->pack_start (_btn_revert, false, false, 2);
 	hbox->pack_start (script_select, false, false, 2);
 
 	Gtk::VBox *vbox = manage (new VBox());
@@ -343,6 +347,13 @@ LuaWindow::delete_script ()
 	new_script ();
 }
 
+void
+LuaWindow::revert_script ()
+{
+	_current_buffer->flags &= BufferFlags(~Buffer_Valid);
+	script_selection_changed (_current_buffer, true);
+}
+
 void
 LuaWindow::import_script ()
 {
@@ -537,7 +548,7 @@ LuaWindow::rebuild_menu ()
 
 	for (ScriptBufferList::const_iterator i = script_buffers.begin (); i != script_buffers.end (); ++i) {
 		Menu_Helpers::MenuElem elem = Gtk::Menu_Helpers::MenuElem((*i)->name,
-				sigc::bind(sigc::mem_fun(*this, &LuaWindow::script_selection_changed), (*i)));
+				sigc::bind(sigc::mem_fun(*this, &LuaWindow::script_selection_changed), (*i), false));
 
 		if ((*i)->flags & Buffer_Scratch) {
 			items_scratch.push_back(elem);
@@ -557,14 +568,17 @@ LuaWindow::rebuild_menu ()
 }
 
 void
-LuaWindow::script_selection_changed (ScriptBufferPtr n)
+LuaWindow::script_selection_changed (ScriptBufferPtr n, bool force)
 {
-	if (n == _current_buffer) {
+	if (n == _current_buffer && !force) {
 		return;
 	}
 
 	Glib::RefPtr<Gtk::TextBuffer> tb (entry.get_buffer());
-	_current_buffer->script = tb->get_text();
+
+	if ((n->flags & Buffer_Valid)) {
+		_current_buffer->script = tb->get_text();
+	}
 
 	if (!(n->flags & Buffer_Valid)) {
 		if (!n->load()) {
@@ -606,6 +620,7 @@ LuaWindow::update_gui_state ()
 
 	_btn_save.set_sensitive (sb.flags & Buffer_Dirty);
 	_btn_delete.set_sensitive (sb.flags & Buffer_Scratch); // TODO allow to remove user-scripts
+	_btn_revert.set_sensitive ((sb.flags & Buffer_Dirty) && (sb.flags & Buffer_HasFile));
 }
 
 void
diff --git a/gtk2_ardour/luawindow.h b/gtk2_ardour/luawindow.h
index 40fa269cef..38f688d4ad 100644
--- a/gtk2_ardour/luawindow.h
+++ b/gtk2_ardour/luawindow.h
@@ -103,6 +103,7 @@ class LuaWindow :
 	ArdourButton _btn_open;
 	ArdourButton _btn_save;
 	ArdourButton _btn_delete;
+	ArdourButton _btn_revert;
 
 	ArdourDropdown script_select;
 
@@ -122,7 +123,7 @@ class LuaWindow :
 	uint32_t count_scratch_buffers () const;
 
 	void script_changed ();
-	void script_selection_changed (ScriptBufferPtr n);
+	void script_selection_changed (ScriptBufferPtr n, bool force = false);
 	void update_gui_state ();
 
 	void append_text (std::string s);
@@ -133,6 +134,7 @@ class LuaWindow :
 
 	void new_script ();
 	void delete_script ();
+	void revert_script ();
 	void import_script ();
 	void save_script ();
 };
-- 
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