Inconsistant state of controls / onlaunch not working.

[SteveWaring]

On my remote I have a label above some buttons. Tapping the label toggles its text and colour, and sets a boolean that alters what the following buttons do. If the label says "Surround With" the following buttons, If, Foreach, While etc send codes to my IDE to surround the highlighted text with the appropriate code. If the label says "Code Block" the following buttons just insert the corresponding code block. The colour of the label changes along with the text to make it obvious what the state of the remote is.

All works fine. But if I press the back button, to use a different remote, and then later come back to my remote, the boolean value is as it was left, the colour is as it was left, but the text is always what is in the layout file, and not what it was left as. This can lead to an inconsistent
text / colour combination.

I thought an onlaunch callback would solve this, but onlaunch is not being triggered when I start the remote. I put a log statement in, and nothing shows.

There is a bug in that the text is being reset, but more importantly onlaunch is not working.

local swmode = true;
actions.launch = function ()
	local log = require("log");
	log.info("launched");
	-- text of label is reset when resumed, but colour isn't. But to future proof do both.
	layout.togglesw.text = "Surround With";
	layout.togglesw.color = "#5f9ea0";
	swmode = true;
end
actions.togglesw = function()
	swmode = not swmode;
	if swmode then
		layout.togglesw.text = "Surround With";
		layout.togglesw.color = "#5f9ea0";
	else
		layout.togglesw.text = "Code block";
                layout.togglesw.color = "#89cff0";
	end
end
actions.sw = function(shortcut, template)
	if swmode then

<layout orientation="portrait" onlaunch="launch">
	<tabs>
		<tab text="General" color="#3682b3">
			<row weight="1"><label id="togglesw" text="Surround With" ontap="togglesw" color="#5f9ea0"/></row>
			<row weight="3">
				<button text="if" ontap="sw,i,if" />
				<button text="unless" ontap="sw,u,unl" />
				<space />
				<space />
			</row>

Correct when first launched:

Correct when the label has been tapped:

Inconsistent state after using back button and then restarting the remote again:

[SteveWaring]

I now alter the visibility of a couple of new buttons as the state of the remote is toggled. Leaving (by back button) and re-entering the remote causes the visibility to be as defined in the layout file, and not as they were when the back button was pressed. This can only be sorted by a callback when the remote is activated . I assume that is what launch is meant to do, but it doesn't.

[SteveWaring]

OK - I have now realised that events.focus is what is needed to restore the status of controls to what they should be. I am leaving this issue open because there is still an issue in that after blur and then focus any text in controls that has been changed reverts to what is in the layout file, but the colour and visibility of controls remain as they have been changed by remote.lua. The latter is by far preferable, because they will match the internal state of variables.

Also, now I realise there is a events.create callback, will someone please tell me what onlaunch does (thank you)