An unresolved programming issue

Carmelocotonto · 09-15-2020, 06:36 AM

Hi,
I'm still looking for a way to call readerfooter.lua functions from dispatcher.lua (for example, call "onUpdaterFooter()" ). I want to update the footer so that the update appears immediately on the screen. Can someone help me and tell me how to do it? Thank you.

pazos · 09-15-2020, 06:49 AM

Instead of calling a function yourself you emit a new event that is handled by the reader footer. See http://koreader.rocks/doc/topics/Events.md.html

Carmelocotonto · 09-15-2020, 07:33 AM

Thanks Pazos, but I don't understand "event" concept and how is its implementation. I don't know LUA. I have tried looking some LUA's files to use the same ideas, but I don't understand the concept. Can you tell me an example of event that is handled by the reader footer. Then I will try something similar.

NiLuJe · 09-15-2020, 07:55 AM

The extremely short-lived bit of code in #6648 could do just that. (Specifically, the commented out part, so, check the commit progression).

pazos · 09-15-2020, 07:59 AM

Quote:

Originally Posted by Carmelocotonto

Thanks Pazos, but I don't understand "event" concept and how is its implementation. I don't know LUA. I have tried looking some LUA's files to use the same ideas, but I don't understand the concept. Can you tell me an example of event that is handled by the reader footer. Then I will try something similar.

functions that are part of an object and start with "on" are normally events, like https://github.com/koreader/koreader...ua#L1819-L1867

Instead of having to remember an instance of the object and its name to call the function you broadcast the event and each widget that can handle the event will react accordly to the event you broadcasted.

Have a look at https://github.com/koreader/koreader...broadcastEvent.

For a function called "onDoFoo" you broadcast a new event "DoFoo", and the event is delivered to all widgets and handled by widgets that implemented "onDoFoo"

Carmelocotonto · 09-16-2020, 05:53 AM

I'm doing tests. Thanks to both of you.

Carmelocotonto · 09-16-2020, 07:12 AM

Gracias Pazos, he aprendido mucho con tus enlaces y sugerencias. Un camino nuevo que no conocía.
Thanks NiJule, I have learned a lot with your suggestions.

This is what I needed and it works:

UIManager:broadcastEvent(Event:new("UpdateFooter", true, true))

NiLuJe · 09-16-2020, 07:40 AM

Oh, duh, I'd forgotten that there already was an event handler for it ;p.

(Sidebar: you *probably* don't need the second true, unless you're doing some fairly wacky stuff ^^).

Carmelocotonto · 09-16-2020, 08:18 AM

Effectively, the second 'true' is not necessary. All is 'ok' with one 'true'.

pazos · 09-17-2020, 11:09 AM

Happy to help @Carmelocotonto. Un saludo

09-15-2020, 06:36 AM	#1
Carmelocotonto Connoisseur Posts: 93 Karma: 12 Join Date: Nov 2018 Location: Salamanca Device: kobo Clara HD, Onyxboox C67	An unresolved programming issue Hi, I'm still looking for a way to call readerfooter.lua functions from dispatcher.lua (for example, call "onUpdaterFooter()" ). I want to update the footer so that the update appears immediately on the screen. Can someone help me and tell me how to do it? Thank you.

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09-15-2020, 06:49 AM	#2
pazos cosiñeiro Posts: 1,271 Karma: 2200049 Join Date: Apr 2014 Device: BQ Cervantes 4	Instead of calling a function yourself you emit a new event that is handled by the reader footer. See http://koreader.rocks/doc/topics/Events.md.html

09-15-2020, 07:33 AM	#3
Carmelocotonto Connoisseur Posts: 93 Karma: 12 Join Date: Nov 2018 Location: Salamanca Device: kobo Clara HD, Onyxboox C67	Thanks Pazos, but I don't understand "event" concept and how is its implementation. I don't know LUA. I have tried looking some LUA's files to use the same ideas, but I don't understand the concept. Can you tell me an example of event that is handled by the reader footer. Then I will try something similar.

09-15-2020, 07:55 AM	#4
NiLuJe BLAM! Posts: 13,477 Karma: 26012494 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	The extremely short-lived bit of code in #6648 could do just that. (Specifically, the commented out part, so, check the commit progression).

09-16-2020, 05:53 AM	#6
Carmelocotonto Connoisseur Posts: 93 Karma: 12 Join Date: Nov 2018 Location: Salamanca Device: kobo Clara HD, Onyxboox C67	I'm doing tests. Thanks to both of you.

09-16-2020, 07:12 AM	#7
Carmelocotonto Connoisseur Posts: 93 Karma: 12 Join Date: Nov 2018 Location: Salamanca Device: kobo Clara HD, Onyxboox C67	Gracias Pazos, he aprendido mucho con tus enlaces y sugerencias. Un camino nuevo que no conocía. Thanks NiJule, I have learned a lot with your suggestions. This is what I needed and it works: UIManager:broadcastEvent(Event:new("UpdateFooter", true, true))

09-16-2020, 07:40 AM	#8
NiLuJe BLAM! Posts: 13,477 Karma: 26012494 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w, PW, PW2, PW5; Kobo H2O, Forma, Elipsa, Sage, C2E	Oh, duh, I'd forgotten that there already was an event handler for it ;p. (Sidebar: you probably don't need the second true, unless you're doing some fairly wacky stuff ^^).

09-16-2020, 08:18 AM	#9
Carmelocotonto Connoisseur Posts: 93 Karma: 12 Join Date: Nov 2018 Location: Salamanca Device: kobo Clara HD, Onyxboox C67	Effectively, the second 'true' is not necessary. All is 'ok' with one 'true'.

09-17-2020, 11:09 AM	#10
pazos cosiñeiro Posts: 1,271 Karma: 2200049 Join Date: Apr 2014 Device: BQ Cervantes 4	Happy to help @Carmelocotonto. Un saludo

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