Use temporary file for unsaved changes

[BaranovMykola]

Add feature for creating temporary file in case user does not apply saving current file. Kuzya must open temporary file in the next launching.
This feature must include the following:

• Add checkbox "Reopen file on Kuzya start" in Kuzya options dialog.
• If checkbox "Reopen file on Kuzya start" is checked user will not be asked about saving and Kuzya will create temporary file automatically.
• If this feature is disabled Kuzya will work in old way.
• Temporary file with source code should be saved in system temporary location (like %TEMP% in Windows)
• Find temporary file, open it and paste source code in the text editor, move text cursor on it's last position and set path to file which user hadn't saved last session
• Delete temporary files if user applies saving file before closing application.
• There is a necessity to save some extra information in Kuzya's settings file: source code, language, cursor position, path to temporary file with source code It's very convenient to use Kuzya's settings file and keep formatted source code in separate file. It's very convenient to store bool variable (if temporary file should be recovered right after next launching).

[alexchmykhalo]

I have following suggestions:

1. "Create temporary file when user rejects saving file" - it is better to explain, how it will work in more detail. Please, add usecase as in PLLUG Presentation System project - so it will be easier to understand workflow. Currently, it looks like, that user will be asked about saving, press "No" and then file will be saved elsewere. It is not a good aproach for that (for example, Notepad++ has such feature, but not works like that).

2. "Temporary file should be saved in kuzya directory" - is it necessary to keep it in that directory? Or we could just use system temporasry location for files (like %TMP% on Windows)?

3. "Ask user if he wants to recovery last session" - as for me it is not very convenient. Idea is to start work from previous point right away after running Kuzya (again, Notepad++ has such feature, but not works like that).

4. "Delete temporary file after launching kuzya" - it is not very safe. What if Kuzya crashes (without a chance to save a file) and previous file was deleted? Or for some reason will be unable to open thta file and delete it?

5. "If there isn't some temporary file it should be created to enable highlight code (in order to selected default language)" - it is better to re-phrase this line and explain in more details.

I believe, that the best way is to write use case. See usecases in PLLUG Presentation System for reference. Then you will see clear picture, how user will work with that feature. And then we could choose appropriate implementation for it as a developerrs.

[BaranovMykola]

I have updated task. Please, check it.

[alexchmykhalo]

I've reviewed it. Overall your description is really great. Some final considerations:

1. Do you think it is really necessary, to ask user about saving, when default language feature is enabled?
2. Why we cannot store information about last cursor position in settings file? (Kuzya has his own file where it keeps all user settings (compiler options, interface language, editor options etc))
3. Maybe it is necessary to divide this feature in two separate parts: this ticket will describe temporary file and create another one - for default language and highlighting right after Kuzya start. We could also consider creating a separate check box in Kuzya options dialog ( "Reopen file on Kuzya start" ) for that. I do not want to completely modify Kuzya behaviour, let's just add few additional features (we will see, how well features work for people on PLLUG) and also keep a way to work with Kuzya in old way.

[BaranovMykola]

You suggested don't ask user about saving if default language feature is enabled. but what if user set default language c++ and try code in python? I thought default language feature is necessary for creating temporary file right after Kuzya's launching (see ticket #24 wich i have created already)