java_asm_egui 0.1.1

Java bytecode reader & writer in rust
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use crate::app::EguiApp;
use egui::text::LayoutJob;
use egui::{ScrollArea, TextStyle};
use java_asm_server::ui::{AppContainer, FileEntry, FileInfo, RawDirInfo};
use java_asm_server::AsmServer;
use std::ops::Deref;

pub fn render_dir(ui: &mut egui::Ui, app: &mut EguiApp) {
    let server_app = &app.server_app;
    let mut server_app_left = server_app.left().lock();
    let entries = &mut server_app_left.root_node.visible_items();
    let server = app.server.lock();
    if let Some(server) = server.deref() {
        let row_height = ui.spacing().interact_size.y;
        ScrollArea::vertical().auto_shrink(false)
            .show_rows(ui, row_height, entries.len(), |ui, range| {
                for i in range {
                    let entry = &mut entries[i];
                    match entry {
                        FileEntry::Dir(raw_dir) => {
                            render_dir_raw(ui, raw_dir);
                        }
                        FileEntry::File(file_info) => {
                            render_file(ui, file_info, server, server_app);
                        }
                    }
                }
            });
    }
}

fn render_file(
    ui: &mut egui::Ui, file_info: &mut FileInfo,
    server: &AsmServer, app: &AppContainer,
) {
    let FileInfo { title, file_key, level } = file_info;
    ui.horizontal(|ui| {
        ui.add_space((*level as f32) * 12.0);
        let layout_job = layout_string(ui, title.to_string());
        let label = ui.selectable_label(false, layout_job);
        if label.clicked() {
            server.switch_or_open(file_key, app);
        }
    });
}

fn render_dir_raw(
    ui: &mut egui::Ui, dir_info: &mut RawDirInfo,
) {
    let RawDirInfo { opened, level, title } = dir_info;
    ui.horizontal(|ui| {
        ui.add_space((*level as f32) * 12.0);
        let font = TextStyle::Body.resolve(ui.style());
        let color = ui.style().visuals.text_color();
        let title = if *opened {
            format!("📂 {}", title)
        } else {
            format!("📁 {}", title)
        };
        let layout_job = LayoutJob::simple_singleline(title, font.clone(), color);
        let label = ui.selectable_label(false, layout_job);
        if label.clicked() {
            *opened = !*opened;
        }
    });
}

fn layout_string(
    ui: &mut egui::Ui, string: String,
) -> LayoutJob {
    let font = TextStyle::Body.resolve(ui.style());
    let color = ui.style().visuals.text_color();
    LayoutJob::simple_singleline(string, font.clone(), color)
}