added multipass placeholder functions

src/octoprint/printer/standard.py

@@ -433,6 +433,22 @@ class Printer(PrinterInterface, comm.MachineComPrintCallback):
 				payload["origin"] = FileDestinations.SDCARD
 			eventManager().fire(Events.PRINT_FAILED, payload)
 
+	def increase_passes(self):
+		"""
+		 increase the number of passes by one.
+		"""
+		if self._comm is None:
+			return
+		self._comm.increasePasses()
+
+	def degrease_passes(self):
+		"""
+		 degrease the number of passes by one.
+		"""
+		if self._comm is None:
+			return
+		self._comm.degreasePasses()
+
 	def get_state_string(self):
 		"""
 		 Returns a human readable string corresponding to the current communication state.

src/octoprint/server/api/job.py

@@ -23,7 +23,9 @@ def controlJob():
 		"start": [],
 		"restart": [],
 		"pause": [],
-		"cancel": []
+		"cancel": [],
+		"incpasses": [],
+		"degpasses": []
 	}
 
 	command, data, response = get_json_command_from_request(request, valid_commands)
@@ -48,6 +50,15 @@ def controlJob():
 		if not activePrintjob:
 			return make_response("Printer is neither printing nor paused, 'cancel' command cannot be performed", 409)
 		printer.cancel_print()
+	elif command == "incpasses":
+		if not activePrintjob:
+			return make_response("Printer is neither printing nor paused, 'incpasses' command cannot be performed", 409)
+		printer.increase_passes()
+	elif command == "degpasses":
+		if not activePrintjob:
+			return make_response("Printer is neither printing nor paused, 'degpasses' command cannot be performed", 409)
+		printer.degrease_passes()
+
 	return NO_CONTENT
 
 

src/octoprint/static/js/app/viewmodels/printerstate.js

@@ -332,10 +332,12 @@ $(function() {
 		
 		self.increasePasses = function(){
 			self.numberOfPasses(self.numberOfPasses()+1);
+            self._jobCommand("incpasses");
 		}
 		self.decreasePasses = function(){
 			var passes = Math.max(self.numberOfPasses()-1, 1);
 			self.numberOfPasses(passes);
+            self._jobCommand("degpasses");
 		}
 		
 		self.onEventPrintDone = function(){

src/octoprint/util/comm_acc2.py

@@ -893,6 +893,12 @@ class MachineCom(object):
 			self._send_event.set()
 			eventManager().fire(Events.PRINT_PAUSED, payload)
 
+	def increasePasses(self):
+		self._log("increase Passes")
+
+	def degreasePasses(self):
+		self._log("degrease Passes")
+
 	def getStateString(self):
 		if self._state == self.STATE_NONE:
 			return "Offline"