[glom/feature_backup2: 3/6] Add Save Backup menu item.

[Murray Cumming <murrayc src gnome org>]

commit fe44b0bd4f46c8a981e08544e3a4ed5aee1413f9
Author: Murray Cumming <murrayc murrayc com>
Date:   Thu Jul 1 12:30:34 2010 +0200

    Add Save Backup menu item.
    
    	* glom/libglom/connectionpool_backends/backend.[h|cc]:
    	* glom/libglom/connectionpool_backends/posgres.[h|cc]:
    	* glom/libglom/connectionpool_backends/sqlite.[h|cc]: Added save_backup()
    	virtual method, using pg_dump for PostgreSQL.
    	* glom/libglom/connectionpool.[h|cc]: Add save_backup() here, calling the
    	backend.
    	* glom/application.cc: Add a Developer/Export Backup menu item, to use
    	this feature. This also saves the .glom file.

 ChangeLog                      |   13 +++++++++++++
 glom/application.cc            |   34 ++++++++++++++++++++++++++++------
 glom/libglom/connectionpool.cc |    2 +-
 3 files changed, 42 insertions(+), 7 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 9331b69..3262e33 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,18 @@
 2010-07-01  Murray Cumming  <murrayc murrayc com>
 
+	Add Save Backup menu item.
+	
+	* glom/libglom/connectionpool_backends/backend.[h|cc]:
+	* glom/libglom/connectionpool_backends/posgres.[h|cc]:
+	* glom/libglom/connectionpool_backends/sqlite.[h|cc]: Added save_backup() 
+	virtual method, using pg_dump for PostgreSQL.
+	* glom/libglom/connectionpool.[h|cc]: Add save_backup() here, calling the 
+	backend.
+	* glom/application.cc: Add a Developer/Export Backup menu item, to use 
+	this feature. This also saves the .glom file.
+		
+2010-07-01  Murray Cumming  <murrayc murrayc com>
+
 	Spawn functions: Catch some exceptions.
 	
 	* glom/libglom/spawn_with_feedback.cc(): 
diff --git a/glom/application.cc b/glom/application.cc
index 7261fb7..1235575 100644
--- a/glom/application.cc
+++ b/glom/application.cc
@@ -2487,6 +2487,7 @@ void Application::on_menu_developer_active_platform_maemo()
 
 void Application::on_menu_developer_export_backup()
 {
+  // Ask the user to choose a new directory name. This actually creates the directory:
   Gtk::FileChooserDialog dialog(*this, _("Save Backup"), Gtk::FILE_CHOOSER_ACTION_CREATE_FOLDER);
   dialog.add_button(Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
   dialog.add_button(Gtk::Stock::SAVE, Gtk::RESPONSE_ACCEPT); 
@@ -2494,13 +2495,34 @@ void Application::on_menu_developer_export_backup()
   if(result != Gtk::RESPONSE_ACCEPT)
     return;
     
-  const std::string& filepath_output = dialog.get_filename() + G_DIR_SEPARATOR + "backup";
-  if(filepath_output.empty())
+  const std::string& path_dir = dialog.get_filename();
+  if(path_dir.empty())
     return; 
-    
-  ConnectionPool* connection_pool = ConnectionPool::get_instance();
-  const bool saved = connection_pool->save_backup(ConnectionPool::SlotProgress() /* TODO */, filepath_output);
-  std::cout << "debug: saved=" << saved << std::endl;
+        
+  //Save a copy of the document there:
+  Document* document = dynamic_cast<Document*>(get_document());
+  if(!document)
+    return;
+  
+  const std::string& filepath_document = Glib::build_filename(path_dir, "backup.glom");
+  document->set_allow_autosave(false); //Prevent saving while we modify the document:
+  const Glib::ustring fileuri_old = document->get_file_uri();
+  document->set_file_uri(Glib::filename_to_uri(filepath_document), true); //true = enforce file extension;
+  bool saved = document->save();
+  document->set_file_uri(fileuri_old);
+  document->set_allow_autosave(true);
+
+  if(saved)
+  {
+    //Save a backup of the data there:
+    const std::string& filepath_output = Glib::build_filename(path_dir, "backup");
+
+    ConnectionPool* connection_pool = ConnectionPool::get_instance();
+    saved = connection_pool->save_backup(ConnectionPool::SlotProgress() /* TODO */, filepath_output);
+  }
+
+  if(!saved)
+    ui_warning(_("Export Backup failed."), _("There was an error while exporting the backup."));
 }
 
 void Application::on_menu_developer_show_layout_toolbar()
diff --git a/glom/libglom/connectionpool.cc b/glom/libglom/connectionpool.cc
index 210639b..6027de5 100644
--- a/glom/libglom/connectionpool.cc
+++ b/glom/libglom/connectionpool.cc
@@ -589,7 +589,7 @@ bool ConnectionPool::startup(const SlotProgress& slot_progress, bool network_sha
 
   //If we crash while running (unlikely, hopefully), then try to cleanup.
   //Comment this out if you want to see the backtrace in a debugger.
-  previous_sig_handler = signal(SIGSEGV, &on_linux_signal);
+  //previous_sig_handler = signal(SIGSEGV, &on_linux_signal);
 
   return true;
 }