feat(slr): improve validation messages for starting SLR

[InAnYan]

Closes https://github.com/JabRef/jabref-issue-melting-pot/issues/1091

Just a UI enhancement. Adds various labels that tell user what needs to be done to start SLR.

Steps to test

Go to the menu, start SLR, go to the tab finalize. Try to fulfill some of the requirements - some messages will be cleared.

Mandatory checks

• I own the copyright of the code submitted and I license it under the MIT license
• I manually tested my changes in running JabRef (always required)
• [/] I added JUnit tests for changes (if applicable)
• I added screenshots in the PR description (if change is visible to the user)
• I described the change in CHANGELOG.md in a way that is understandable for the average user (if change is visible to the user)
• I checked the user documentation: Is the information available and up to date? If not, I created an issue at https://github.com/JabRef/user-documentation/issues or, even better, I submitted a pull request updating file(s) in https://github.com/JabRef/user-documentation/tree/main/en.

[InAnYan]

IDK if a changelog entry is needed

[InAnYan]

Ah, sorry, I forgot about JabRef_en

[Siedlerchr]

Please use our ValidationSatus approach with the controlsfx visualizer

jabref/jabgui/src/main/java/org/jabref/gui/groups/GroupDialogViewModel.java

Lines 138 to 174 in 3b62795

	private void setupValidation() {
	validator = new CompositeValidator();
	nameValidator = new FunctionBasedValidator<>(
	nameProperty,
	StringUtil::isNotBlank,
	ValidationMessage.error(Localization.lang("Please enter a name for the group.")));
	nameContainsDelimiterValidator = new FunctionBasedValidator<>(
	nameProperty,
	name -> !name.contains(Character.toString(preferences.getBibEntryPreferences().getKeywordSeparator())),
	ValidationMessage.warning(
	Localization.lang(
	"The group name contains the keyword separator \"%0\" and thus probably does not work as expected.",
	Character.toString(preferences.getBibEntryPreferences().getKeywordSeparator())
	)));
	sameNameValidator = new FunctionBasedValidator<>(
	nameProperty,
	name -> {
	Optional<GroupTreeNode> rootGroup = currentDatabase.getMetaData().getGroups();
	if (rootGroup.isPresent()) {
	boolean groupsExistWithSameName = !rootGroup.get().findChildrenSatisfying(group -> group.getName().equals(name)).isEmpty();
	if ((editedGroup == null) && groupsExistWithSameName) {
	// New group but there is already one group with the same name
	return false;
	}
	// Edit group, changed name to something that is already present
	return (editedGroup == null) || editedGroup.getName().equals(name) || !groupsExistWithSameName;
	}
	return true;
	},
	ValidationMessage.warning(
	Localization.lang("There already exists a group with the same name.\nIf you use it, it will inherit all entries from this other group.")
	)
	);

PS: Next time tell your AI tool to follow existing patterns in the codebase

[InAnYan]

Okay, you got me

But I thought those things only work for fields

[InAnYan]

Sorry, but I don't really understand. It's a bit messy. I can't get a single validation message from ValidationStatus, it can return getHighestMessage, which returns an optional ValidationMessage, but then I have to make a map(m -> m.getMessage()), but to remove option, before that I have to orElse(new ValidationMessage("")).

While I would like to use Validators, I think this is easier.

Hmm, maybe it's possible to add validation messages to a button? And then if it's disabled, some validation didn't pass, it would have red border and a warning triangle...

But labels seem to be more compact