grafen 0.9.1

Create graphene and other substrates for use in molecular dynamics simulations.
Documentation 
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//! Edit a `DataBase`.

mod component;
mod residue;

use error::GrafenCliError;
use ui::utils::{MenuResult, get_value_from_user, print_description, select_command};

use grafen::database::{write_database, DataBase};
use std::error::Error;

pub fn user_menu(database: &mut DataBase) -> MenuResult {
    let path_backup = database.path.clone();
    let residues_backup = database.residue_defs.clone();
    let components_backup = database.component_defs.clone();

    create_menu![
        @pre: { print_description(database); };

        EditResidues, "Edit list of residues" => {
            residue::user_menu(&mut database.residue_defs).map(|msg| msg.into())
        },
        EditComponents, "Edit list of components" => {
            component::user_menu(&mut database.component_defs, &database.residue_defs)
                .map(|msg| msg.into())
        },
        WriteToDisk, "Write database to disk" => {
            write_database(&database)
                .map(|_| {
                    format!("Wrote database to '{}'",
                        database.path.as_ref().unwrap().to_str().unwrap()
                    ).into()
                })
                .map_err(|err| GrafenCliError::RunError(
                    format!("Could not write database: {}", err.description())
                ))
        },
        SetLocation, "Change output location of database" => {
            let path = get_value_from_user::<String>("New path")?;
            database.set_path(&path)
                .map(|_| None)
                .map_err(|_| GrafenCliError::RunError("Could not change database path".into()))
        },
        QuitAndSave, "Finish editing database" => {
            return Ok("Finished editing database".to_string().into());
        },
        QuitWithoutSaving, "Abort editing and discard changes" => {
            database.path = path_backup;
            database.residue_defs = residues_backup;
            database.component_defs = components_backup;

            return Ok("Discarding changes to database".to_string().into());
        }
    ];
}