Saving the last directory a Preset file has been exported to via stateData #432
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Hi everybody, I use the following command to open the save file dialog: The juce class is "File : https://docs.juce.com/master/classFile.html Is there a way to store the path to a custom userdirectory with the stateData valueTree and saveState/loadState methods? Thanks a lot for your help ;) Damien |
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Replies: 4 comments 8 replies
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Salut Damien! J'espère que tu vas bien! Doing this since long in all my panels ;-) Indeed, the File object is a gold mine... Somewhere in a method in your panel: SaveStateData method: ReadStateData method: Piece of cake ;-) |
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Salut Dominique, oui ca va très bien merci! Juce has getParentDirectory() and it's very handy for that. But my syntax is not good. save to file dialog For sUserLastPath, the console returns: From the error dialog: The utils.saveFileWindow() function from Ctrlr source ctrlr/Source/Lua/CtrlrLuaUtils.cpp Line 176 in c1f67d2 According to the Juce documentation, in saveFileWindow("dialog box title", File(), "pattern", bool) I got the path to directory working this way: saveState readState My issue is how to properly pass the last path + the name to the dialog box to avoid navigating to the user folder over and over, not for storing it in the stateData valuetree. Thanks for your help Dominique, merci d'avance! Damien |
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Alright so I got it almost working on Mac. saveFileWindow() requires (string, File, string, bool) So we need the full path + newFileName + .ext On mac the path are separated with "/" but if I recall on PC the separator for folders is antislash We need to concatenate the full path like this : sUserLastFullPath = tostring(sUserLastPath).."/"..FileName And this is the result: the first time the console posts : the second pass, since sUserLastPath is stored : And an extra .syx extension is added obviously thanks to the 3argument (&pattern) the stateData has to be stored as string with : and is shown in the ctrlr.settings like this : Can you please let me know if this is working on PC or it requires a antislash ? I'm pretty sure there's another way to compose the full path+name in a easier way and avoid this PC/MAC separator problem. Thanks |
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Alright I have it and it should work for both PC and Mac. the console prints : LUA>> FileNameFromDialog : SPX900 - 14 - PERCUSSION ER.syx This way we can pass both an automated name for the file and the user last directory. with File(sLastFileFullPathWoName..FileName) If someone could check if it's working for PC that would be great. |
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One thing I found on Windows is that the last "/" doesn't get added to the full path name, so you need to add it manually. I did a check on the right most character. If it isn't a "/" or "" I add "/" by concatenating the string. This should also work with OSX. I'm busy on some personal court stuff at the moment. Hit me up with a Message if you need some more help on this and I can post my code from the Jupiter 8 Panel for saving this to the value tree. |
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I just re-read your code, and you account for the last character, so ignore my previous comment. Really elegant solution. I'll try to find some time to test the code on the PC. |
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Sorry guys, I still don't understand what the problem was... |
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Hi Dominique, the problem is that the last directory path is returned as an object ID not a string. So my first solution was to concatenate like this (the objectID).."/"..(filename.ext) but on PC it requires the antislash, so it won't work for PC. |
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This really is an excellent solution and it works on Windows! The trouble, as you already found out, is that So, as far as I know that userData cannot be output to string and therefore cannot be saved to I wrote a panel using Atom's code from the DEMO panel and also referring to this post, which is similar to your code and of course using your code. I would like to change some of my panels to incorporate this in future. Excellent work! remember last directory_1_0_0.zip -- Called when a modulator value changes
-- @mod http://ctrlr.org/api/class_ctrlr_modulator.html
-- @value new numeric value of the modulator
-- https://ctrlr.org/forums/search/getParentDirectory/
saveContentAsText = function(mod, value)
if panel:getBootstrapState() then
return
end
if sLastFileFullPathWoName ~= nil then
local sUserLastFullPathName = sLastFileFullPathWoName
fileToWrite = utils.saveFileWindow("Save content as " .. ext, File(sUserLastFullPathName), "*" .. ext, true)
else
fileToWrite =
utils.saveFileWindow(
"Save content as " .. ext,
File.getSpecialLocation(File.userHomeDirectory),
"*." .. ext,
true
)
end
if fileToWrite:isValid() == false then
return
end -- Let's see if the file exists
if fileToWrite:existsAsFile() == false then -- The file is not there, that's ok, let's try to create it
if fileToWrite:create() == false then -- Ooooh we can't create it, we need to fail here
utils.warnWindow("File write", "The destination file does not exist, and I can't create it")
return
end
end -- Update the file path
panel:getLabelComponent("lastFileWritePathL"):setText(" \187 " .. fileToWrite:getFullPathName())
textToWrite = panel:getLabelComponent("saveMe"):getText()
if textToWrite:length() == 0 then
utils.warnWindow("Data to write", 'There is no data to write, we\'ll default to "' .. defText .. '"')
textToWrite = defText
end
-- If we reached this point, we have a valid file we can try to write to
-- There are two flags when writing text -- asUnicode - if should write our text as UNICODE
-- writeUnicodeHeaderBytes - if we should add a special unicode header at the beginning of the file
-- we set both to false
if fileToWrite:replaceWithText(textToWrite, false, false) == false then
utils.warnWindow("File write", "Failed to write data to file: " .. fileToWrite:getFullPathName())
end
local sLastFileFullPath = fileToWrite:getFullPathName() -- get the absolute path+filename from dialog box
local sLastFileName = fileToWrite:getFileName() -- get the name from dialog
local sLastFileNameLen = string.len(sLastFileName) -- count the number of characters in the name from dialog
sLastFileFullPathWoName = string.sub(sLastFileFullPath, 0, -tonumber(sLastFileNameLen) - 1)
end
saveState = function(--[[ ValueTree --]]stateData)
if sLastFileFullPathWoName ~= nil then
stateData:setProperty("UserLastPath", sLastFileFullPathWoName, nil)
end
end
loadState = function(--[[ ValueTree --]] stateData)
if stateData:hasProperty("UserLastPath") and string.len(stateData:getProperty("UserLastPath")) > 0 then
sLastFileFullPathWoName=stateData:getProperty("UserLastPath")
end
end
constructor = function()
defText="no text submitted"
ext="txt"
end
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Thanks John, hope it helped, I found this workaround and it worked as a charm. Good to hear it's also working on PC, I was a bit worried about it. Have a nice day! |
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I just read that you can get the os path separator (ie is it backslash or forward slash?) with This function also returns the path without the filename. But does lua just use '/' every time anyway internally? Not sure. function getPath(str)
--[[https://stackoverflow.com/questions/9102126/lua-return-directory-path-from-path--]]
local ossep=package.config:sub(1,1)
--return str:match("(.*[/\\])")
return str:match("(.*["..ossep.."])")
end
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That one seems useful as well. I didn't know you could do that kind of OS specific operations. Thanks John |
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Alright I have it and it should work for both PC and Mac.
SInce getParentDirectory() returns an objectID, I prefered using the getFullPathName function, then I remove the last x caracters from the returned string according to the length of the name of the file. This way I have the absolute path until the last folder separator slash for mac or antislash for PC :