finnally got it ;)

gui/dialogs.glade

@@ -10,7 +10,6 @@
     <property name="window_position">center-on-parent</property>
     <property name="type_hint">dialog</property>
     <property name="skip_taskbar_hint">True</property>
-    <property name="urgency_hint">True</property>
     <property name="has_resize_grip">False</property>
     <property name="message_type">error</property>
     <property name="buttons">ok</property>
@@ -36,6 +35,41 @@
       </object>
     </child>
   </object>
+  <object class="GtkMessageDialog" id="InfoDialog">
+    <property name="can_focus">False</property>
+    <property name="border_width">5</property>
+    <property name="resizable">False</property>
+    <property name="modal">True</property>
+    <property name="window_position">center-on-parent</property>
+    <property name="type_hint">dialog</property>
+    <property name="skip_taskbar_hint">True</property>
+    <property name="buttons">ok</property>
+    <child internal-child="vbox">
+      <object class="GtkBox" id="messagedialog-vbox9">
+        <property name="can_focus">False</property>
+        <property name="orientation">vertical</property>
+        <property name="spacing">2</property>
+        <child internal-child="action_area">
+          <object class="GtkButtonBox" id="messagedialog-action_area9">
+            <property name="can_focus">False</property>
+            <property name="layout_style">end</property>
+            <child>
+              <placeholder/>
+            </child>
+            <child>
+              <placeholder/>
+            </child>
+          </object>
+          <packing>
+            <property name="expand">False</property>
+            <property name="fill">True</property>
+            <property name="pack_type">end</property>
+            <property name="position">0</property>
+          </packing>
+        </child>
+      </object>
+    </child>
+  </object>
   <object class="GtkMessageDialog" id="QuestionDialog">
     <property name="can_focus">False</property>
     <property name="border_width">5</property>

gui/manager.glade

@@ -9,7 +9,6 @@
     <property name="window_position">center-on-parent</property>
     <property name="type_hint">dialog</property>
     <property name="skip_taskbar_hint">True</property>
-    <property name="urgency_hint">True</property>
     <property name="deletable">False</property>
     <property name="transient_for">ManagerWindow</property>
     <child internal-child="vbox">
@@ -121,7 +120,6 @@
     <property name="icon">/usr/share/pamac/icons/22x22/status/package-info.png</property>
     <property name="type_hint">dialog</property>
     <property name="skip_taskbar_hint">True</property>
-    <property name="urgency_hint">True</property>
     <property name="deletable">False</property>
     <property name="transient_for">ManagerWindow</property>
     <child>
@@ -265,6 +263,7 @@
     <property name="height_request">500</property>
     <property name="can_focus">False</property>
     <property name="title" translatable="yes">Pamac</property>
+    <property name="window_position">center</property>
     <property name="default_width">800</property>
     <property name="default_height">500</property>
     <property name="icon">/usr/share/pamac/icons/22x22/status/package-sources.png</property>

pamac-daemon

@@ -8,7 +8,7 @@ from gi.repository import GObject
 
 import pyalpm
 #import traceback
-#import threading
+from multiprocessing import Process
 from pamac import config, common
 
 class PamacDBusService(dbus.service.Object):
@@ -17,6 +17,7 @@ class PamacDBusService(dbus.service.Object):
 		bus_name = dbus.service.BusName('org.manjaro.pamac', bus)
 		dbus.service.Object.__init__(self, bus_name, '/org/manjaro/pamac')
 		self.t = None
+		self.task = None
 		self.error = ''
 		self.warning = ''
 		self.action = 'Preparing...'
@@ -109,14 +110,13 @@ class PamacDBusService(dbus.service.Object):
 		print("conversation", args)
 
 	def cb_log(self, level, line):
-		#global t
 		_logmask = pyalpm.LOG_ERROR | pyalpm.LOG_WARNING
 		if not (level & _logmask):
 			return
 		if level & pyalpm.LOG_ERROR:
 			self.error += "ERROR: "+line
 			print(self.error)
-			#t.release()
+			#self.t.release()
 		elif level & pyalpm.LOG_WARNING:
 			self.warning += "WARNING: "+line
 		elif level & pyalpm.LOG_DEBUG:
@@ -133,8 +133,9 @@ class PamacDBusService(dbus.service.Object):
 		if self.total_size > 0:
 			fraction = (_transferred+self.already_transferred)/self.total_size
 		size = 0
-		if (t.to_remove or t.to_add):
+		try:
-			for pkg in t.to_remove+t.to_add:
+			if (self.t.to_remove or self.t.to_add):
+				for pkg in self.t.to_remove+self.t.to_add:
 					if pkg.name+'-'+pkg.version in _target:
 						size = pkg.size
 				if _transferred == size:
@@ -152,6 +153,8 @@ class PamacDBusService(dbus.service.Object):
 			self.EmitIcon(self.icon)
 			self.EmitTarget(self.target)
 			self.EmitPercent(str(self.percent))
+		except pyalpm.error:
+			pass
 
 	def cb_progress(self, _target, _percent, n, i):
 		self.target = _target+' ('+str(i)+'/'+str(n)+')'
@@ -184,30 +187,35 @@ class PamacDBusService(dbus.service.Object):
 				updates = True
 		self.EmitAvailableUpdates(updates)
 
-	@dbus.service.method('org.manjaro.pamac', '', 's')
+	@dbus.service.method('org.manjaro.pamac', '', 's', async_callbacks=('success', 'nosuccess'))
-	def Refresh(self):
+	def Refresh(self, success, nosuccess):
-		global t
+		def refresh():
+			self.target = ''
+			self.percent = 0
 			self.error = ''
 			for db in config.handle.get_syncdbs():
 				try:
-				t = config.handle.init_transaction()
+					self.t = config.handle.init_transaction()
 					db.update(force=False)
-				t.release()
 				except pyalpm.error as e:
 					self.error += ' --> '+str(e)+'\n'
-				t.release()
 					#break
+				finally:
+					self.t.release()
 			self.CheckUpdates()
-		return self.error
+			if self.error:
+				self.EmitTransactionError(self.error)
+		self.task = Process(target=refresh)
+		self.task.start()
+		success('')
 
 	@dbus.service.method('org.manjaro.pamac', 'a{sb}', 's', sender_keyword='sender', connection_keyword='connexion')
 	def Init(self, options, sender=None, connexion=None):
-		global t
 		self.error = ''
 		if self.policykit_test(sender,connexion,'org.manjaro.pamac.init_release'):
 			try:
-				t = config.handle.init_transaction(**options)
+				self.t = config.handle.init_transaction(**options)
-				print('Init:',t.flags)
+				print('Init:',self.t.flags)
 			except pyalpm.error as e:
 				self.error += ' --> '+str(e)+'\n'
 			finally:
@@ -217,11 +225,10 @@ class PamacDBusService(dbus.service.Object):
 
 	@dbus.service.method('org.manjaro.pamac', '', 's')
 	def Sysupgrade(self):
-		global t
 		self.error = ''
 		try:
-			t.sysupgrade(downgrade=False)
+			self.t.sysupgrade(downgrade=False)
-			print('to_upgrade:',t.to_add)
+			print('to_upgrade:',self.t.to_add)
 		except pyalpm.error as e:
 			self.error += ' --> '+str(e)+'\n'
 		finally:
@@ -229,12 +236,11 @@ class PamacDBusService(dbus.service.Object):
 
 	@dbus.service.method('org.manjaro.pamac', 's', 's')
 	def Remove(self, pkgname):
-		global t
 		self.error = ''
 		try:
 			pkg = config.handle.get_localdb().get_pkg(pkgname)
 			if pkg is not None:
-				t.remove_pkg(pkg)
+				self.t.remove_pkg(pkg)
 		except pyalpm.error as e:
 			self.error += ' --> '+str(e)+'\n'
 		finally:
@@ -242,13 +248,12 @@ class PamacDBusService(dbus.service.Object):
 
 	@dbus.service.method('org.manjaro.pamac', 's', 's')
 	def Add(self, pkgname):
-		global t
 		self.error = ''
 		try:
 			for repo in config.handle.get_syncdbs():
 				pkg = repo.get_pkg(pkgname)
 				if pkg:
-					t.add_pkg(pkg)
+					self.t.add_pkg(pkg)
 					break
 		except pyalpm.error as e:
 			self.error += ' --> '+str(e)+'\n'
@@ -257,12 +262,11 @@ class PamacDBusService(dbus.service.Object):
 
 	@dbus.service.method('org.manjaro.pamac', '', 's')
 	def Prepare(self):
-		global t
 		self.error = ''
 		try:
-			t.prepare()
+			self.t.prepare()
-			print('to_add:',t.to_add)
+			print('to_add:',self.t.to_add)
-			print('to_remove:',t.to_remove)
+			print('to_remove:',self.t.to_remove)
 		except pyalpm.error as e:
 			print(e)
 			self.error += ' --> '+str(e)+'\n'
@@ -271,48 +275,79 @@ class PamacDBusService(dbus.service.Object):
 
 	@dbus.service.method('org.manjaro.pamac', '', 'as')
 	def To_Remove(self):
-		global t
 		liste = []
-		for pkg in t.to_remove:
+		for pkg in self.t.to_remove:
 			liste.append(pkg.name)
 		return liste
 
 	@dbus.service.method('org.manjaro.pamac', '', 'as')
 	def To_Add(self):
-		global t
 		liste = []
-		for pkg in t.to_add:
+		for pkg in self.t.to_add:
 			liste.append(pkg.name)
 		return liste
 
-	@dbus.service.method('org.manjaro.pamac', '', 's', sender_keyword='sender', connection_keyword='connexion')#, async_callbacks=('success', 'nosuccess'))
+	@dbus.service.method('org.manjaro.pamac', '', 's', async_callbacks=('success', 'nosuccess'))
-	def Commit(self, sender=None, connexion=None):#success, nosuccess, sender=None, connexion=None):
+	def Interrupt(self, success, nosuccess):
-		global t
+		def interrupt():
 			self.error = ''
-		if self.policykit_test(sender,connexion,'org.manjaro.pamac.commit'): 
+			#try:
+			#	self.t.interrupt()
+			#except pyalpm.error as e:
+			#	self.error += ' --> '+str(e)+'\n'
 			try:
-				t.commit()
+				self.t.release()
-				#success('')
+			#except pyalpm.error as e:
+				#self.error += ' --> '+str(e)+'\n'
+			except:
+				pass
+			finally:
+				self.CheckUpdates()
+				#if self.error:
+					#self.EmitTransactionError(self.error)
+		self.task.terminate()
+		interrupt()
+		success('')
+
+	@dbus.service.method('org.manjaro.pamac', '', 's', sender_keyword='sender', connection_keyword='connexion', async_callbacks=('success', 'nosuccess'))
+	def Commit(self, success, nosuccess, sender=None, connexion=None):
+		def commit():
+			self.error = ''
+			try:
+				self.t.commit()
 			except pyalpm.error as e:
 				#error = traceback.format_exc()
 				self.error += ' --> '+str(e)+'\n'
-				#nosuccess(self.error)
 			#except dbus.exceptions.DBusException:
 				#pass
 			finally:
 				self.CheckUpdates()
-				return self.error
+				if self.error:
+					self.EmitTransactionError(self.error)
 				else:
-			return 'You are not authorized'
+					self.EmitTransactionDone('Transaction successfully finished')
-			#nosuccess('You are not authorized')
+		if self.policykit_test(sender,connexion,'org.manjaro.pamac.commit'):
+			self.task = Process(target=commit)
+			self.task.start()
+		else :
+			self.t.release()
+			self.EmitTransactionError('You are not authorized')
+		success('')
+
+	@dbus.service.signal('org.manjaro.pamac')
+	def EmitTransactionDone(self, message):
+		pass
+
+	@dbus.service.signal('org.manjaro.pamac')
+	def EmitTransactionError(self, message):
+		pass
 
 	@dbus.service.method('org.manjaro.pamac', '', 's', sender_keyword='sender', connection_keyword='connexion')
 	def Release(self, sender=None, connexion=None):
-		global t
 		self.error = ''
 		if self.policykit_test(sender,connexion,'org.manjaro.pamac.init_release'):
 			try:
-				t.release()
+				self.t.release()
 			except pyalpm.error as e:
 				self.error += ' --> '+str(e)+'\n'
 			finally:
@@ -322,13 +357,13 @@ class PamacDBusService(dbus.service.Object):
 
 	@dbus.service.method('org.manjaro.pamac')
 	def StopDaemon(self):
-		global t
 		try:
-			t.release()
+			self.t.release()
 		except:
 			pass
 		mainloop.quit()
 
+GObject.threads_init()
 DBusGMainLoop(set_as_default=True)
 myservice = PamacDBusService()
 mainloop = GObject.MainLoop()

pamac/main.py

@@ -12,10 +12,11 @@ from pamac import config, common, transaction
 
 interface = Gtk.Builder()
 
-interface.add_from_file('/usr/share/pamac/gui/dialogs.glade')
+#interface.add_from_file('/usr/share/pamac/gui/dialogs.glade')
-ErrorDialog = interface.get_object('ErrorDialog')
+#ErrorDialog = interface.get_object('ErrorDialog')
-WarningDialog = interface.get_object('WarningDialog')
+#WarningDialog = interface.get_object('WarningDialog')
-QuestionDialog = interface.get_object('QuestionDialog')
+#InfoDialog = interface.get_object('InfoDialog')
+#QuestionDialog = interface.get_object('QuestionDialog')
 
 interface.add_from_file('/usr/share/pamac/gui/manager.glade')
 ManagerWindow = interface.get_object("ManagerWindow")
@@ -49,12 +50,10 @@ update_label = interface.get_object('update_label')
 def action_signal_handler(action):
 	if action:
 		progress_label.set_text(action)
-	#if 'Downloading' in action:
+	if ('Refreshing' in action) or ('Preparing' in action) or ('Downloading' in action) or ('Checking' in action) or ('Resolving' in action) or ('Loading' in action):
-	#	print('cancel enabled')
+		ProgressCancelButton.set_visible(True)
-	#	ProgressCancelButton.set_visible(True)
+	else:
-	#else:
 		ProgressCancelButton.set_visible(False)
-		#print('cancel disabled')
 
 def icon_signal_handler(icon):
 	action_icon.set_from_file(icon)
@@ -275,6 +274,7 @@ def set_transaction_sum():
 def handle_error(error):
 	global transaction_type
 	global transaction_dict
+	ProgressWindow.hide()
 	if error:
 		if not 'DBus.Error.NoReply' in str(error):
 			print('error:', error)
@@ -283,11 +283,7 @@ def handle_error(error):
 			if response:
 				transaction.ErrorDialog.hide()
 	transaction.t_lock = False
-	try:
 	transaction.Release()
-	except:
-		pass
-	ProgressWindow.hide()
 	if mode == 'manager':
 		transaction.to_add = []
 		transaction.to_remove = []
@@ -302,17 +298,17 @@ def handle_error(error):
 def handle_reply(reply):
 	global transaction_type
 	global transaction_dict
+	ProgressWindow.hide()
 	if reply:
-		transaction.ErrorDialog.format_secondary_text(reply)
+		transaction.InfoDialog.format_secondary_text(reply)
-		response = transaction.ErrorDialog.run()
+		response = transaction.InfoDialog.run()
 		if response:
-			transaction.ErrorDialog.hide()
+			transaction.InfoDialog.hide()
 	transaction.t_lock = False
 	try:
 		transaction.Release()
 	except:
 		pass
-	ProgressWindow.hide()
 	transaction.to_add = []
 	transaction.to_remove = []
 	transaction_dict.clear()
@@ -327,6 +323,9 @@ def handle_reply(reply):
 		if mode == 'manager':
 			do_sysupgrade()
 
+bus.add_signal_receiver(handle_reply, dbus_interface = "org.manjaro.pamac", signal_name = "EmitTransactionDone")
+bus.add_signal_receiver(handle_error, dbus_interface = "org.manjaro.pamac", signal_name = "EmitTransactionError")
+
 def do_refresh():
 	"""Sync databases like pacman -Sy"""
 	if transaction.t_lock is False:
@@ -336,7 +335,7 @@ def do_refresh():
 		ProgressWindow.show_all()
 		while Gtk.events_pending():
 			Gtk.main_iteration()
-		transaction.Refresh(reply_handler = handle_reply, error_handler = handle_error, timeout = 2000*1000)
+		transaction.Refresh(reply_handler = handle_reply, error_handler = handle_error)#, timeout = 2000*1000)
 
 def have_updates():
 	do_syncfirst, updates = transaction.get_updates()
@@ -417,7 +416,7 @@ def finalize():
 		ProgressWindow.show_all()
 		while Gtk.events_pending():
 			Gtk.main_iteration()
-		transaction.Commit(reply_handler = handle_reply, error_handler = handle_error, timeout = 2000*1000)
+		transaction.Commit()#reply_handler = handle_reply, error_handler = handle_error, timeout = 2000*1000)
 
 def check_conflicts(pkg_list):
 	depends = [pkg_list]
@@ -801,6 +800,10 @@ class Handler:
 
 	def on_ProgressCancelButton_clicked(self, *arg):
 		print('cancelled')
+		error = transaction.Interrupt()
+		if error:
+			handle_error(error)
+		else:
 			handle_reply('')
 
 def main(_mode):

pamac/transaction.py

@@ -24,7 +24,8 @@ interface = Gtk.Builder()
 interface.add_from_file('/usr/share/pamac/gui/dialogs.glade')
 ErrorDialog = interface.get_object('ErrorDialog')
 WarningDialog = interface.get_object('WarningDialog')
-QuestionDialog = interface.get_object('QuestionDialog')
+#QuestionDialog = interface.get_object('QuestionDialog')
+InfoDialog = interface.get_object('InfoDialog')
 
 def get_handle():
 	global handle
@@ -57,6 +58,7 @@ Prepare = proxy.get_dbus_method('Prepare','org.manjaro.pamac')
 To_Remove = proxy.get_dbus_method('To_Remove','org.manjaro.pamac')
 To_Add = proxy.get_dbus_method('To_Add','org.manjaro.pamac')
 Commit = proxy.get_dbus_method('Commit','org.manjaro.pamac')
+Interrupt = proxy.get_dbus_method('Interrupt','org.manjaro.pamac')
 Release = proxy.get_dbus_method('Release','org.manjaro.pamac')
 StopDaemon = proxy.get_dbus_method('StopDaemon','org.manjaro.pamac')