Implement finding neighbors of symbols without proper labels

[taesungh]

One feature from the original Java app that has not yet been implemented is finding the neighbors of a symbol. This is particularly useful for transformed symbols that do not fit a symbol with additional diacritics after a transformation is applied. For symbols without proper labels, the spreadsheet currently shows a question mark (?) in a button, but finding neighbors would also be useful for symbols with known labels or even before applying a transformation to know about potential results. As a first step, the button for unknown symbols can be used as a trigger, but there will need to be another mechanism for known symbols.

• For showing neighbors, a Dialog should appear showing a view similar to the feature comparison table that lists out neighboring symbols ordered by degree of similarity
  • The cells of the differing features should be colored to indicate such
  • The original also has the rows shaded darker based on the distance metric
• To find the neighbors, use an approach similar to ComplexSymbol._determineCharacter
  • The search should explore all base symbols and try applying compatible diacritics that bring the symbol closer to the target

Here is an example from the original app where /f/ is transformed with [-delayed release]