How does BibEntry.java communicate with LinkedFileEditorViewModel.java

AlexLu1 · November 17, 2022, 2:46pm

We are currently trying to implement an extra feature for JabRef as University Project at Universität Basel, we oriented ourselves at this issue Better support for managing annotated PDFs · Issue #94 · koppor/jabref · GitHub.

Currently i’m having a hard time understanding how the BibEntry.java object is notified of a files field change when adding a new LinkedFile over for example the “addNewFile()” Operation in the LinkedFileEditorViewModel.java class.
A new LinkedFileViewModel.java object is created but i currently don’t see the logic which updates the corresponding BibEntry.java object which can also call a “getFiles()” Operation.
I already read into Property Bindings as this seems to be heavily used, could someone throw me a hint per chance.

Siedlerchr · November 17, 2022, 9:13pm

Hi,

thanks for working on this!
In general this works that way: the BibEntry is the model class and the Fields are bound bidirectional (Bindings are just nice wrapper for the concept of Observables) with the EntryEditor.
This happens here:

github.com

JabRef/jabref/blob/3f82d6da95002190932ad8cfd02730c36790f69f/src/main/java/org/jabref/gui/fieldeditors/LinkedFilesEditor.java#L239


      
                      }
                  }
              });
          }
          
          
public LinkedFilesEditorViewModel getViewModel() {
              return viewModel;
          }
          
          
@Override
          public void bindToEntry(BibEntry entry) {
              bibEntry = EasyBind.wrapNullable(new SimpleObjectProperty<>(entry));
              viewModel.bindToEntry(entry);
          }
          
          
@Override
          public Parent getNode() {
              return this;
          }
          
          
@FXML

So whenever we change something either in the model itself or in the gui, the entries are updated.

For the concept of Bindings and Properties, I suggest this good explanation:

PS: Dev questions are better handled in the gitter.chat or on github directly

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How does BibEntry.java communicate with LinkedFileEditorViewModel.java

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