Listbox example?

[oldgearguy]

EDIT

I am trying to display a pop-up list box that contains a list of save destinations.

More specifically -- I can create a uiListBox and populate it with a list. However, I can't seem to find a way to stop the current processing and wait for a user selection and then continue with the selected value. The box can be hidden or shown, but it's "just there" rather than pausing and waiting for a selection.

EDIT 2

worked it out by moving calls around. The issue is that I probably don't fully understand synchronization/timing/blocking calls/sleep()/etc well enough. I was trying to populate a list, then prompt the user, then send MIDI. I was trying to do those steps in sequence inside the same method. What was happening was the list population was taking some time , the dialog popped up before the list was done and the MIDI call was sent before the user selected anything from the list.

By moving the call to sendMIDI inside the method handling the list box, I was able to serialize things the way I wanted.

I think at some point in time, I want to temporarily hire one of you veteran Ctrlr programmers to look over my code and suggest any/all cleanup & optimizations that make sense.

thanks

[dobo365]

Hi! There are not enough details about your need but I can read a lot of complications (if I understand well).

To load my presets in a dynamic way, I'm using the PopupMenu() object whose content is rebuilt each time you click on the object where you want to see the menu appearing.
On some panel I have it on a big red LED screen, on some others on the display of the bank and patch number. Both are simple uiLabels.
You attach the ShowPresetsMenu() method (call it as you like) to the OnMouseClick property.
Once attached, it is a bit tricky to further edit (move, change look..) the label because it first triggers the ShowPresetsMenu() before letting you adapt the properties.

Each line is identified by a unique ID that you can use to trigger a LoadPreset() method.

You build the menu from top to bottom. You must first build the content of the submenus before adding them to the parent menu.

Some extract of my code:

    MainMenu = PopupMenu()
	MainMenu:addSectionHeader("Load program")
	MainMenu:addItem(1000, "Any .syx program", true, false, Image())

	if not bBank then
		MainMenu:addItem(0, sSourceBankName.." bank not loaded", true, false, Image())
	else

		if 	modPopupMenuByCategory:getValue()==0 then

			-- Popup menu by Bank
    		BankAMenu = PopupMenu()
    		BankBMenu = PopupMenu()
    		BankCMenu = PopupMenu()
    		BankDMenu = PopupMenu()

			for i=0, 99 do
				-- The itemID must start at 1
				BankAMenu:addItem(i+1, L(lbBank:getTextForValue(i)), true, false, Image())
				BankBMenu:addItem(101+i, L(lbBank:getTextForValue(100+i)), true, false, Image())
				BankCMenu:addItem(201+i, L(lbBank:getTextForValue(200+i)), true, false, Image())
				BankDMenu:addItem(301+i, L(lbBank:getTextForValue(300+i)), true, false, Image())
			end

        	MainMenu:addSubMenu(sSourceBankName.." - Bank A", BankAMenu, true, Image(), false, 0)
        	MainMenu:addSubMenu(sSourceBankName.." - Bank B", BankBMenu, true, Image(), false, 0)
        	MainMenu:addSubMenu(sSourceBankName.." - Bank C", BankCMenu, true, Image(), false, 0)
        	MainMenu:addSubMenu(sSourceBankName.." - Bank D", BankDMenu, true, Image(), false, 0)

		end

    local iSelectedID = MainMenu:show(0,20,0,0)
--    console("iSelectedID : "..tostring(iSelectedID))

	if iSelectedID>0 then
-- do something
	end

[oldgearguy]

Thanks for that example. It looks very good. As I progress, I'm going to need things like this, so it's good to have examples.

Is there a full list somewhere of all the various events that can occur with mouse down, up, click, etc?
I see methods that often have parameters of (comp, event), but I can't find a list of how to query/check what the actual event is that caused the action.

I am guessing they are of the form: event.mods.xxxxx(). Can I search the Ctrlr source code to find these things?

[dobo365]

Depending on the object you will have some properties in which you can enter a method.
So a first look is to just select one object then have a look at the property labels like "Called when..."
In the other direction, go to Lua and do Add method. In the pulldown "Initialize from template" you will see all the possible callbacks.
So, in general, what I do is: what do I want to achieve, how could that be done, search for a callback.
I have used Events only to capture the different mouse buttons.

--
-- Called when a mouse is down on this component
--

SoundBank_OnClick = function(--[[ CtrlrComponent --]] comp, --[[ MouseEvent --]] event)

		if event.mods:isLeftButtonDown() then
		elseif event.mods:isRightButtonDown() then

You can find that and more "mods" in the Juce API documentation

[oldgearguy]

You folks are super helpful.
This is saving me hours of randomly digging around public panels looking for specific things.