musicus/src/screens/person_screen.rs

use super::*;
use crate::backend::*;
use crate::database::*;
use crate::editors::PersonEditor;
use crate::widgets::{List, Navigator, NavigatorScreen, NavigatorWindow};
use gettextrs::gettext;
use gio::prelude::*;
use glib::clone;
use gtk::prelude::*;
use gtk_macros::get_widget;
use libhandy::HeaderBarExt;
use std::cell::RefCell;
use std::rc::Rc;

pub struct PersonScreen {
    backend: Rc<Backend>,
    person: Person,
    widget: gtk::Box,
    stack: gtk::Stack,
    work_list: Rc<List<Work>>,
    recording_list: Rc<List<Recording>>,
    navigator: RefCell<Option<Rc<Navigator>>>,
}

impl PersonScreen {
    pub fn new(backend: Rc<Backend>, person: Person) -> Rc<Self> {
        let builder = gtk::Builder::from_resource("/de/johrpan/musicus/ui/person_screen.ui");

        get_widget!(builder, gtk::Box, widget);
        get_widget!(builder, libhandy::HeaderBar, header);
        get_widget!(builder, gtk::Button, back_button);
        get_widget!(builder, gtk::SearchEntry, search_entry);
        get_widget!(builder, gtk::Stack, stack);
        get_widget!(builder, gtk::Box, work_box);
        get_widget!(builder, gtk::Frame, work_frame);
        get_widget!(builder, gtk::Box, recording_box);
        get_widget!(builder, gtk::Frame, recording_frame);

        header.set_title(Some(&person.name_fl()));

        let edit_action = gio::SimpleAction::new("edit", None);
        let delete_action = gio::SimpleAction::new("delete", None);

        let actions = gio::SimpleActionGroup::new();
        actions.add_action(&edit_action);
        actions.add_action(&delete_action);

        widget.insert_action_group("widget", Some(&actions));

        let work_list = List::new(&gettext("No works found."));

        work_list.set_make_widget(|work: &Work| {
            let label = gtk::Label::new(Some(&work.title));
            label.set_halign(gtk::Align::Start);
            label.set_margin_start(6);
            label.set_margin_end(6);
            label.set_margin_top(6);
            label.set_margin_bottom(6);
            label.upcast()
        });

        work_list.set_filter(clone!(@strong search_entry => move |work: &Work| {
            let search = search_entry.get_text().to_string().to_lowercase();
            let title = work.title.to_lowercase();
            search.is_empty() || title.contains(&search)
        }));

        let recording_list = List::new(&gettext("No recordings found."));

        recording_list.set_make_widget(|recording: &Recording| {
            let work_label = gtk::Label::new(Some(&recording.work.get_title()));

            work_label.set_ellipsize(pango::EllipsizeMode::End);
            work_label.set_halign(gtk::Align::Start);

            let performers_label = gtk::Label::new(Some(&recording.get_performers()));
            performers_label.set_ellipsize(pango::EllipsizeMode::End);
            performers_label.set_opacity(0.5);
            performers_label.set_halign(gtk::Align::Start);

            let vbox = gtk::Box::new(gtk::Orientation::Vertical, 0);
            vbox.set_border_width(6);
            vbox.add(&work_label);
            vbox.add(&performers_label);

            vbox.upcast()
        });

        recording_list.set_filter(
            clone!(@strong search_entry => move |recording: &Recording| {
                let search = search_entry.get_text().to_string().to_lowercase();
                let text = recording.work.get_title() + &recording.get_performers();
                search.is_empty() || text.contains(&search)
            }),
        );

        work_frame.add(&work_list.widget);
        recording_frame.add(&recording_list.widget);

        let result = Rc::new(Self {
            backend,
            person,
            widget,
            stack,
            work_list,
            recording_list,
            navigator: RefCell::new(None),
        });

        search_entry.connect_search_changed(clone!(@strong result => move |_| {
            result.work_list.invalidate_filter();
            result.recording_list.invalidate_filter();
        }));

        back_button.connect_clicked(clone!(@strong result => move |_| {
            let navigator = result.navigator.borrow().clone();
            if let Some(navigator) = navigator {
                navigator.clone().pop();
            }
        }));

        result
            .work_list
            .set_selected(clone!(@strong result => move |work| {
                result.recording_list.clear_selection();
                let navigator = result.navigator.borrow().clone();
                if let Some(navigator) = navigator {
                    navigator.push(WorkScreen::new(result.backend.clone(), work.clone()));
                }
            }));

        result
            .recording_list
            .set_selected(clone!(@strong result => move |recording| {
                result.work_list.clear_selection();
                let navigator = result.navigator.borrow().clone();
                if let Some(navigator) = navigator {
                    navigator.push(RecordingScreen::new(result.backend.clone(), recording.clone()));
                }
            }));

        edit_action.connect_activate(clone!(@strong result => move |_, _| {
            let editor = PersonEditor::new(result.backend.clone(), Some(result.person.clone()));
            let window = NavigatorWindow::new(editor);
            window.show();
        }));

        delete_action.connect_activate(clone!(@strong result => move |_, _| {
            let context = glib::MainContext::default();
            let clone = result.clone();
            context.spawn_local(async move {
                clone.backend.db().delete_person(&clone.person.id).await.unwrap();
                clone.backend.library_changed();
            });
        }));

        let context = glib::MainContext::default();
        let clone = result.clone();
        context.spawn_local(async move {
            let works = clone
                .backend
                .db()
                .get_works(&clone.person.id)
                .await
                .unwrap();
            let recordings = clone
                .backend
                .db()
                .get_recordings_for_person(&clone.person.id)
                .await
                .unwrap();

            if works.is_empty() && recordings.is_empty() {
                clone.stack.set_visible_child_name("nothing");
            } else {
                if works.is_empty() {
                    work_box.hide();
                } else {
                    clone.work_list.show_items(works);
                }

                if recordings.is_empty() {
                    recording_box.hide();
                } else {
                    clone.recording_list.show_items(recordings);
                }

                clone.stack.set_visible_child_name("content");
            }
        });

        result
    }
}

impl NavigatorScreen for PersonScreen {
    fn attach_navigator(&self, navigator: Rc<Navigator>) {
        self.navigator.replace(Some(navigator));
    }

    fn get_widget(&self) -> gtk::Widget {
        self.widget.clone().upcast()
    }

    fn detach_navigator(&self) {
        self.navigator.replace(None);
    }
}