iced_af 0.4.1

The iced application framework project.
Documentation 
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// This file is part of `iced_af` crate. For the terms of use, please see the file
// called LICENSE-BSD-3-Clause at the top level of the `iced_af` crate.

use crate::{
    application::constants::APPLICATION_NAME_SHORT,
    core::{
        error::CoreError,
        localisation::Localisation,
        traits::{AnyLocalisedTrait, LocalisedTrait},
    },
};
use i18n::utility::{LanguageTag, PlaceholderValue};

#[allow(unused_imports)]
use log::{debug, error, info, trace, warn};
use std::{any::Any, collections::HashMap};

#[cfg(not(feature = "sync"))]
use std::rc::Rc as RefCount;

#[cfg(feature = "sync")]
#[cfg(target_has_atomic = "ptr")]
use std::sync::Arc as RefCount;

pub enum Index {
    Title,
    ConfirmExit,
    Exit,
    Cancel,
}

#[derive(Debug)]
pub struct Strings {
    language_tag: RefCount<LanguageTag>,
    strings: Vec<RefCount<String>>,
}

impl Strings {
    pub fn try_new(localisation: &Localisation) -> Result<Self, CoreError> {
        let (language_tag, strings) = localise(localisation)?;
        Ok(Strings {
            language_tag,
            strings,
        })
    }
}

impl AnyLocalisedTrait for Strings {
    fn as_any(&self) -> &dyn Any {
        self
    }
}

impl LocalisedTrait for Strings {
    fn try_update(&mut self, localisation: &Localisation) -> Result<(), CoreError> {
        if self.language_tag != localisation.default_language().into() {
            debug!("Updating Confirm exit UI localisation.");

            let (language_tag, strings) = localise(localisation)?;
            self.language_tag = language_tag;
            self.strings = strings;
        }
        Ok(())
    }

    fn title(&self) -> &String {
        &self.strings[0]
    }

    fn string(&self, index: usize) -> &String {
        &self.strings[index]
    }

    fn language_tag(&self) -> &RefCount<LanguageTag> {
        &self.language_tag
    }
}

fn localise(
    localisation: &Localisation,
) -> Result<(RefCount<LanguageTag>, Vec<RefCount<String>>), CoreError> {
    let language_tag = localisation.default_language();
    let title = {
        #[cfg(target_os = "macos")]
        let name = localisation
            .localiser()
            .literal_with_defaults("application", "confirm_quit")?;

        #[cfg(not(target_os = "macos"))]
        let name = localisation.literal_with_defaults("application", "confirm_exit")?;

        let mut values = HashMap::<String, PlaceholderValue>::new();
        values.insert(
            "application".to_string(),
            PlaceholderValue::String(APPLICATION_NAME_SHORT.to_string()),
        );
        values.insert("window".to_string(), PlaceholderValue::Localised(name.0, name.1));
        localisation.format_with_defaults("application", "window_title_format", &values)?
    }.0;
    let confirm_exit = {
        #[cfg(target_os = "macos")]
        {
            let mut values = HashMap::<String, PlaceholderValue>::new();
            values.insert(
                "short_name".to_string(),
                PlaceholderValue::String(APPLICATION_NAME_SHORT.to_string()),
            );
            localisation.localiser().format_with_defaults(
                "application",
                "confirm_quit_question",
                &values,
            )?
        }

        #[cfg(not(target_os = "macos"))]
        localisation.literal_with_defaults("application", "confirm_exit_question")?
    }.0;
    let exit = {
        #[cfg(target_os = "macos")]
        {
            let mut values = HashMap::<String, PlaceholderValue>::new();
            values.insert(
                "short_name".to_string(),
                PlaceholderValue::String(APPLICATION_NAME_SHORT.to_string()),
            );
            localisation
                .localiser()
                .format_with_defaults("application", "quit_macos", &values)?
        }

        #[cfg(not(target_os = "macos"))]
        localisation.literal_with_defaults("word", "exit_i")?
    }.0;
    let cancel = localisation
        .literal_with_defaults("word", "cancel_i")?.0;
    Ok((language_tag, vec![title, confirm_exit, exit, cancel]))
}