Swap transition count and listener order

README_API.md

@@ -40,13 +40,18 @@ Clear the stack of screens completely. Any visible screen will be hidden by navi
 * `callback` (function) - Optional function to call when the stack has been cleared.
 
 
-## monarch.back([data], [callback])
+## monarch.back([options], [data], [callback])
 Go back to a previous Monarch screen. This operation will be added to the queue if Monarch is busy.
 
 **PARAMETERS**
+* `options` (table) - Options when showing the new screen (see below).
 * `data` (table) - Optional data to associate with the screen you are going back to.  Retrieve using `monarch.data()`.
 * `callback` (function) - Optional function to call when the previous screen is visible.
 
+The options table can contain the following fields:
+
+* `sequential` (boolean) - If the `sequential` flag is set Monarch will start loading the screen only after the previous screen finished transitioning out.
+
 
 ## monarch.preload(screen_id, [options], [callback])
 Preload a Monarch screen. This will load but not enable the screen. This is useful for content heavy screens that you wish to be able to show without having to wait for it load. This operation will be added to the queue if Monarch is busy.
@@ -177,7 +182,7 @@ Remove a previously added listener.
 
 
 ## monarch.post(screen_id, message_id, [message])
-Post a message to a visible screen. If the screen is created through a collection proxy it must have specified a receiver url. If the screen is created through a collection factory the function will post the message to all game objects within the collection.
+Post a message to a visible screen. The screen must have set a message listener using `monarch.on_post()`.
 
 **PARAMETERS**
 * `screen_id` (string|hash) - Id of the screen to post message to

example/slidingwindow/slidingwindow.script

@@ -4,10 +4,25 @@ function init(self)
 	monarch.debug()
 	msg.post("@render:/", "clear_color", { color = vmath.vector4(0.4, 0.6, 0.8,1.0) })
 	msg.post("#", "init_monarch") -- wait until init() has been called for all screen.script instances
+	monarch.add_listener()
+end
+
+function final(self)
+	monarch.remove_listener()
 end
 
 function on_message(self, message_id, message, sender)
 	if message_id == hash("init_monarch") then
 		monarch.show(hash("window1"))
+	elseif message_id == monarch.SCREEN_TRANSITION_IN_STARTED then
+		print("Monarch screen transition in started", message.screen)
+	elseif message_id == monarch.SCREEN_TRANSITION_IN_FINISHED then
+		print("Monarch screen transition in finished", message.screen)
+	elseif message_id == monarch.SCREEN_TRANSITION_OUT_STARTED then
+		print("Monarch screen transition out started", message.screen)
+	elseif message_id == monarch.SCREEN_TRANSITION_OUT_FINISHED then
+		print("Monarch screen transition out finished", message.screen)
+	elseif message_id == monarch.SCREEN_TRANSITION_FAILED then
+		print("Monarch screen transition failed")
 	end
 end

monarch/monarch.lua

@@ -21,7 +21,7 @@ local MSG_ENABLE = hash("enable")
 local MSG_DISABLE = hash("disable")
 
 
-local DEPRECATED = hash("/__DEPRECATED__")
+local DEPRECATED = hash("__DEPRECATED__")
 
 -- transition messages
 M.TRANSITION = {}
@@ -281,13 +281,13 @@ function M.register_proxy(id, proxy, settings)
 	screen.focus_url = settings and settings.focus_url
 	screen.receiver_url = settings and settings.receiver_url
 	screen.auto_preload = settings and settings.auto_preload
-	if screen.transition_url.path == DEPRECATED then
+	if screen.transition_url.fragment == DEPRECATED then
 		screen.transition_url = nil
 	end
-	if screen.focus_url.path == DEPRECATED then
+	if screen.focus_url.fragment == DEPRECATED then
 		screen.focus_url = nil
 	end
-	if screen.receiver_url.path == DEPRECATED then
+	if screen.receiver_url.fragment == DEPRECATED then
 		screen.receiver_url = nil
 	end
 	if screen.auto_preload then
@@ -715,8 +715,8 @@ local function back_out(screen, next_screen, wait_for_transition, cb)
 	log("back_out()", screen.id)
 	assert(wait_for_transition ~= nil)
 	run_coroutine(screen, cb, function()
-		notify_transition_listeners(M.SCREEN_TRANSITION_OUT_STARTED, { screen = screen.id, next_screen = next_screen and next_screen.id })
 		active_transition_count = active_transition_count + 1
+		notify_transition_listeners(M.SCREEN_TRANSITION_OUT_STARTED, { screen = screen.id, next_screen = next_screen and next_screen.id })
 		change_context(screen)
 		release_input(screen, next_screen)
 		focus_lost(screen, next_screen)
@@ -965,21 +965,38 @@ end
 
 
 -- Go back to the previous screen in the stack.
+-- @param options (table) - Table with options when backing out from the screen (can be nil).
+--		Valid values:
+-- 		* sequential - Set to true to wait for the current screen to hide itself out before starting the
+--				   back in transition even when transitioning to a different scene ID.
+
 -- @param data (*) - Optional data to set for the previous screen
 -- @param cb (function) - Optional callback to invoke when the previous screen is visible again
-function M.back(data, cb)
+function M.back(options, data, cb)
 	log("back() queuing action")
+	-- backwards compatibility with old version M.back(data, cb)
+	-- case when back(data, cb)
+	if type(data) == "function" then
+		cb = data
+		data = options
+		options = nil
+	-- case when back(data, nil)
+	elseif options ~= nil and data == nil and cb == nil then
+		data = options
+		options = nil
+	end
 
 	queue_action(function(action_done)
 		local callbacks = callback_tracker()
-		local back_cb = callbacks.track()
 		local screen = table.remove(stack)
 		if screen then
 			log("back()", screen.id)
+			local back_cb = callbacks.track()
 			local top = stack[#stack]
 			-- if we go back to the same screen we need to first hide it
 			-- and wait until it is hidden before we show it again
-			if top and screen.id == top.id then
+			local same_screen = top and top.id == screen.id
+			if same_screen or (options and options.sequential) then
 				back_out(screen, top, WAIT_FOR_TRANSITION, function()
 					if data then
 						top.data = data
@@ -1173,17 +1190,11 @@ function M.post(id, message_id, message)
 	assert(screens[id], ("There is no screen registered with id %s"):format(tostring(id)))
 
 	local screen = screens[id]
-	if screen.proxy then
-		if screen.receiver_url then
-			log("post() sending message to", screen.receiver_url)
-			msg.post(screen.receiver_url, message_id, message)
-		else
-			return false, "Unable to post message since screen has no receiver url specified"
-		end
+	if screen.receiver_url then
+		log("post() sending message to", screen.receiver_url)
+		msg.post(screen.receiver_url, message_id, message)
 	else
-		for id,instance in pairs(screen.factory_ids) do
-			msg.post(instance, message_id, message)
-		end
+		return false, "Unable to post message since screen has no receiver url specified. Set one using monarch.on_post()."
 	end
 	return true
 end

monarch/screen_proxy.script

@@ -7,9 +7,9 @@ go.property("popup_on_popup", false)
 go.property("timestep_below_popup", 1)
 go.property("screen_keeps_input_focus_when_below_popup", false)
 go.property("others_keep_input_focus_when_below_screen", false)
-go.property("transition_url", msg.url("__DEPRECATED__"))
-go.property("focus_url", msg.url("__DEPRECATED__"))
-go.property("receiver_url", msg.url("__DEPRECATED__"))
+go.property("transition_url", msg.url("#__DEPRECATED__"))
+go.property("focus_url", msg.url("#__DEPRECATED__"))
+go.property("receiver_url", msg.url("#__DEPRECATED__"))
 go.property("preload", false)
 
 

test/data/screen1.gui_script

@@ -1,5 +1,11 @@
+local monarch
+
 function init(self)
-	print("init - screen1")
+	monarch = require "monarch.monarch"
+	print("init - screen1", msg.url())
+	monarch.on_post("screen1", function(message_id, message, sender)
+		_G.screen1_on_post = message or true
+	end)
 end
 
 function final(self)
@@ -7,7 +13,8 @@ function final(self)
 end
 
 function on_message(self, message_id, message, sender)
+	monarch.on_message(message_id, message, sender)
 	if message_id == hash("foobar") then
-		_G.screen1_foobar = message or true
+		_G.screen1_on_message = message or true
 	end
 end

test/data/screen2.gui_script

@@ -1,5 +1,11 @@
+local monarch
+
 function init(self)
-	print("init - screen2")
+	monarch = require "monarch.monarch"
+	print("init - screen2", msg.url())
+	monarch.on_post("screen2", function(message_id, message, sender)
+		_G.screen2_on_post = message or true
+	end)
 end
 
 function final(self)
@@ -7,7 +13,8 @@ function final(self)
 end
 
 function on_message(self, message_id, message, sender)
+	monarch.on_message(message_id, message, sender)
 	if message_id == hash("foobar") then
-		_G.screen2_foobar = message or true
+		_G.screen2_on_message = message or true
 	end
 end

test/test_monarch.lua

@@ -12,7 +12,6 @@ local FOCUS1 = hash("focus1")
 local BACKGROUND = hash("background")
 local POPUP1 = hash("popup1")
 local POPUP2 = hash("popup2")
-local FOOBAR = hash("foobar")
 local TRANSITION1 = hash("transition1")
 
 local function check_stack(expected_screens)
@@ -220,7 +219,7 @@ return function()
 			assert(monarch.data(SCREEN2) == data2, "Expected data on screen2 doesn't match actual data")
 
 			local data_back = { going = "back" }
-			monarch.back(data_back)
+			monarch.back(nil, data_back)
 			assert(wait_until_visible(SCREEN1))
 
 			assert(monarch.data(SCREEN1) == data_back, "Expected data on screen1 doesn't match actual data")
@@ -491,49 +490,56 @@ return function()
 
 
 		it("should be able to post messages without message data to visible screens", function()
-			_G.screen1_foobar = nil
-			_G.screen2_foobar = nil
+			_G.screen1_on_message = nil
+			_G.screen1_on_post = nil
+			_G.screen2_on_message = nil
+			_G.screen2_on_post = nil
 
 			-- proxy screen
 			monarch.show(SCREEN1)
 			wait_until_visible(SCREEN1)
 			assert(monarch.post(SCREEN1, "foobar"), "Expected monarch.post() to return true")
 			cowait(0.1)
-			assert(_G.screen1_foobar, "Screen1 never received a message")
+			assert(_G.screen1_on_message, "Screen1 never received a message")
+			assert(_G.screen1_on_post, "Screen1 never received a callback")
 
 			-- factory screen
 			monarch.show(SCREEN2)
 			wait_until_visible(SCREEN2)
 			assert(monarch.post(SCREEN2, "foobar"), "Expected monarch.post() to return true")
 			cowait(0.1)
-			assert(_G.screen2_foobar, "Screen2 never received a message")
+			assert(_G.screen2_on_message, "Screen2 never received a message")
+			assert(_G.screen2_on_post, "Screen2 never received a callback")
 		end)
 
 
 		it("should be able to post messages with message data to visible screens", function()
-			_G.screen1_foobar = nil
-			_G.screen2_foobar = nil
+			_G.screen1_on_message = nil
+			_G.screen1_on_post = nil
+			_G.screen2_on_message = nil
+			_G.screen2_on_post = nil
 
 			-- proxy screen
 			monarch.show(SCREEN1)
 			wait_until_visible(SCREEN1)
 			assert(monarch.post(SCREEN1, "foobar", { foo = "bar" }), "Expected monarch.post() to return true")
 			cowait(0.1)
-			assert(_G.screen1_foobar, "Screen1 never received a message")
-			assert(_G.screen1_foobar.foo == "bar", "Screen1 never received message data")
-			
+			assert(_G.screen1_on_message, "Screen1 never received a message")
+			assert(_G.screen1_on_message.foo == "bar", "Screen1 never received message data")
+
 			-- factory screen
 			monarch.show(SCREEN2)
 			wait_until_visible(SCREEN2)
 			assert(monarch.post(SCREEN2, "foobar", { foo = "bar" }), "Expected monarch.post() to return true")
 			cowait(0.1)
-			assert(_G.screen2_foobar, "Screen2 never received a message")
-			assert(_G.screen2_foobar.foo == "bar", "Screen2 never received message data")
+			assert(_G.screen2_on_message, "Screen2 never received a message")
+			assert(_G.screen2_on_message.foo == "bar", "Screen2 never received message data")
 		end)
 
 
 		it("should not be able to post messages to hidden screens", function()
-			_G.screen1_foobar = nil
+			_G.screen1_on_message = nil
+			_G.screen1_on_post = nil
 
 			monarch.show(SCREEN1)
 			monarch.show(SCREEN2)
@@ -542,7 +548,7 @@ return function()
 			local ok, err = monarch.post(SCREEN1, "foobar")
 			assert(not ok and err, "Expected monarch.post() to return false plus an error message")
 			cowait(0.1)
-			assert(not _G.screen1_foobar, "Screen1 should not have received a message")
+			assert(not _G.screen1_on_message, "Screen1 should not have received a message")
 		end)