implemented real 'cancel'.

* include/Dialog_Progress.h,
  src/Dialog_Progress.cc: implemented real 'cancel'.

ChangeLog

@@ -12,6 +12,11 @@
 	* src/Dialog_Partition_Info.cc: use Utils::format_size() instead of
 	  displaying every value in MiB's. Also some cleanups and changes.
 
+2006-01-26 Bart Hakvoort <hakvoort@cvs.gnome.org>
+
+	* include/Dialog_Progress.h,
+	  src/Dialog_Progress.cc: implemented real 'cancel'.
+
 2006-01-24 Bart Hakvoort <hakvoort@cvs.gnome.org>
 
 	* src/Utils.cc: use realpath() to get absolute path to 'real'

include/Dialog_Progress.h

@@ -43,7 +43,7 @@ public:
 private:
 	void update_operation_details( const Gtk::TreeRow & treerow, const OperationDetails & operation_details ) ;
 	void on_signal_show() ;
-	void thread_apply_operation( Operation * operation ) ;
+	static void *static_pthread_apply_operation( void * p_dialog_progress ) ;
 	
 	void on_response( int response_id ) ;
 
@@ -78,8 +78,8 @@ private:
 	treeview_operations_Columns treeview_operations_columns;
 	
 	std::vector<Operation> operations ;
-	bool pulse, succes ;
+	bool pulse, succes, cancel ;
-	Glib::Thread *thread ;
+	pthread_t pthread ;
 	double fraction ;
 	unsigned int t ;
 	Glib::ustring str_temp ;

src/Dialog_Progress.cc

@@ -30,6 +30,7 @@ Dialog_Progress::Dialog_Progress( const std::vector<Operation> & operations )
 	this ->set_title( _("Applying pending operations") ) ;
 	this ->operations = operations ;
 	succes = true ;
+	cancel = false ;
 
 	fraction = 1.00 / operations .size() ;
 			
@@ -91,7 +92,7 @@ Dialog_Progress::Dialog_Progress( const std::vector<Operation> & operations )
 	this ->get_vbox() ->pack_start( expander_details, Gtk::PACK_EXPAND_WIDGET ) ; 
 	this ->get_vbox() ->set_spacing( 5 ) ;
 	
-	this ->add_button( Gtk::Stock::CANCEL, Gtk::RESPONSE_NONE ) ;
+	this ->add_button( Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL ) ;
 	
 	this ->signal_show() .connect( sigc::mem_fun(*this, &Dialog_Progress::on_signal_show) );
 	this ->show_all_children() ;
@@ -151,9 +152,9 @@ void Dialog_Progress::update_operation_details( const Gtk::TreeRow & treerow,
 
 void Dialog_Progress::on_signal_show()
 {
-	for ( t = 0 ; t < operations .size() && succes ; t++ )
+	for ( t = 0 ; t < operations .size() && succes && ! cancel ; t++ )
 	{
-		label_current .set_markup( "<i>" + operations[ t ] .str_operation + "</i>" ) ;
+		label_current .set_markup( "<i>" + operations[ t ] .str_operation + "</i>\n" ) ;
 		
 		progressbar_all .set_text( String::ucompose( _("%1 of %2 operations completed"), t, operations .size() ) ) ;
 		progressbar_all .set_fraction( fraction * t ) ;
@@ -163,8 +164,7 @@ void Dialog_Progress::on_signal_show()
 		treeview_operations .set_cursor( static_cast<Gtk::TreePath>( treestore_operations ->children()[ t ] ) ) ;
 		
 		pulse = true ;
-		thread = Glib::Thread::create( sigc::bind<Operation *>( 
+		pthread_create( & pthread, NULL, Dialog_Progress::static_pthread_apply_operation, this );
-				sigc::mem_fun( *this, &Dialog_Progress::thread_apply_operation ), &( operations[ t ] ) ), true );
 		
 		treerow = treestore_operations ->children()[ t ] ;
 		while ( pulse )
@@ -179,8 +179,6 @@ void Dialog_Progress::on_signal_show()
 			usleep( 10000 ) ;
 		}
 
-		thread ->join() ;
-
 		//final updates for this operation
 		update_operation_details( treerow, operations[ t ] .operation_details ) ;
 		static_cast<Gtk::TreeRow>( treestore_operations ->children()[ t ] )
@@ -192,11 +190,19 @@ void Dialog_Progress::on_signal_show()
 	this ->get_action_area() ->remove( * children .back() ) ;
 	this ->add_button( Gtk::Stock::CLOSE, Gtk::RESPONSE_OK );
 
+	if ( cancel )
+	{
+		progressbar_current .set_text( _("Operation cancelled") ) ;
+		progressbar_current .set_fraction( 0.0 ) ;
+	}
+	else
+	{
 		//hide 'current operation' stuff
 		children = this ->get_vbox() ->get_children() ;
 		children[ 1 ] ->hide() ;
 		progressbar_current .hide() ;
 		label_current .hide() ;
+	}
 
 	//deal with succes/error...
 	if ( succes )
@@ -206,9 +212,10 @@ void Dialog_Progress::on_signal_show()
 	}
 	else 
 	{
-		progressbar_all .set_text( _("Not all operations were succesfully completed") ) ;
 		expander_details .set_expanded( true ) ;
 
+		if ( ! cancel )
+		{
 			Gtk::MessageDialog dialog( *this,
 						   _("An error occurred while applying the operations"),
 						   false,
@@ -225,25 +232,43 @@ void Dialog_Progress::on_signal_show()
 			dialog .run() ;
 		}
 	}
+}
 
-void Dialog_Progress::thread_apply_operation( Operation * operation ) 
+void * Dialog_Progress::static_pthread_apply_operation( void * p_dialog_progress ) 
 {
-	succes = signal_apply_operation .emit( *operation ) ;
+	Dialog_Progress *dp = static_cast<Dialog_Progress *>( p_dialog_progress ) ;
 	
-	pulse = false ;
+	dp ->succes = dp ->signal_apply_operation .emit( dp ->operations[ dp ->t ] ) ;
+
+	dp ->pulse = false ;
+
+	return NULL ;
 }
 
 void Dialog_Progress::on_response( int response_id ) 
 {
-	if ( pulse && ( response_id == Gtk::RESPONSE_DELETE_EVENT || response_id == Gtk::RESPONSE_CANCEL ) )
+	if ( response_id == Gtk::RESPONSE_CANCEL )
 	{
-		//FIXME i guess this is the best place to implement the cancel. there are 2 ways to trigger this:
+		Gtk::MessageDialog dialog( *this,
-		//press the 'cancel' button
+					   _("Are you sure you want to cancel the current operation?"),
-		//close the dialog by pressing the cross
+					   false,
-		std::cout << "CANCEL!! yet to be implemented... ;)" << std::endl ;
+					   Gtk::MESSAGE_QUESTION,
-	}
+					   Gtk::BUTTONS_NONE,
+					   true ) ;
 		
-	Gtk::Dialog::on_response( response_id ) ;
+		dialog .set_secondary_text( _("Cancelling an operation may cause SEVERE filesystem damage.") ) ;
+
+		dialog .add_button( _("Continue Operation"), Gtk::RESPONSE_NONE ) ;
+		dialog .add_button( _("Cancel Operation"), Gtk::RESPONSE_CANCEL ) ;
+	
+		if ( dialog .run() == Gtk::RESPONSE_CANCEL )
+		{
+			pthread_cancel( pthread ) ;
+			cancel = true ;
+			pulse = false ;
+			succes = false ;
+		}
+	}
 }
 
 Dialog_Progress::~Dialog_Progress()