wasm + native support for choosing files

frontend/src/widgets/file-native.rs

@@ -1,156 +0,0 @@
-// use std::future::Future;
-// use eframe::{egui, epi};
-// use rfd;
-
-use wasm_bindgen::prelude::*;
-use wasm_bindgen::JsCast;
-use web_sys::{window, console, Element, HtmlInputElement, FileReader};
-use js_sys::{Uint8Array, ArrayBuffer, Object};
-
-type File = Vec<u8>;
-
-pub struct FileDialog {
-    tx: std::sync::mpsc::Sender<File>,
-    rx: std::sync::mpsc::Receiver<File>,
-    input: HtmlInputElement,
-    closure: Option<Closure<dyn FnMut()>>,
-}
-
-// #[cfg(not(target_arch = "wasm32"))]
-
-impl Default for FileDialog {
-    #[cfg(target_arch = "wasm32")]
-    fn default() -> Self {
-        let (tx, rx) = std::sync::mpsc::channel();
-
-        let document = window().unwrap().document().unwrap();
-        let body = document.body().unwrap();
-        let input = document.create_element("input").unwrap().dyn_into::<HtmlInputElement>().unwrap();
-        input.set_attribute("type", "file").unwrap();
-        input.style().set_property("display", "none").unwrap();
-        body.append_child(&input).unwrap();
-
-        Self {
-            rx,
-            tx,
-            input,
-            closure: None,
-        }
-    }
-}
-
-impl Drop for FileDialog {
-    fn drop(&mut self) {
-        self.input.remove();
-    }
-}
-
-impl FileDialog {
-    pub fn open_file(&mut self) {
-        if let Some(closure) = &self.closure {
-            self.input.remove_event_listener_with_callback("change", closure.as_ref().unchecked_ref()).unwrap();
-            std::mem::replace(&mut self.closure, None).unwrap().forget();
-        }
-
-        let tx = self.tx.clone();
-        let input_clone = self.input.clone();
-
-        let closure = Closure::once(move || {
-            if let Some(file) = input_clone.files().and_then(|files| files.get(0)) {
-                let reader = FileReader::new().unwrap();
-                let reader_clone = reader.clone();
-                let onload_closure = Closure::once(Box::new(move || {
-                    let array_buffer = reader_clone.result().unwrap().dyn_into::<ArrayBuffer>().unwrap();
-                    let buffer = Uint8Array::new(&array_buffer).to_vec();
-                    tx.send(buffer);
-                }));
-
-                reader.set_onload(Some(onload_closure.as_ref().unchecked_ref()));
-                reader.read_as_array_buffer(&file).unwrap();
-                onload_closure.forget();
-            }
-        });
-
-        self.input.add_event_listener_with_callback("change", closure.as_ref().unchecked_ref()).unwrap();
-        self.closure = Some(closure);
-        self.input.click();
-
-
-
-            // if ui.button("Open file…").clicked() {
-            //     if let Some(path) = rfd::AsyncFileDialog::new().pick_file() {
-            //         let _ = Some(path.display().to_string());
-            //     }
-            // }
-    }
-
-    pub fn opened(&self) -> Option<Vec<u8>> {
-        if let Ok(file) = self.rx.try_recv() {
-            Some(file)
-        } else {
-            None
-        }
-    }
-
-}
-
-// pub fn filedialog(state: FileState) ->
-//     impl egui::Widget
-// {
-//     move |ui: &mut egui::Ui| {
-
-// }
-
-
-// impl epi::App for FileApp {
-//     fn name(&self) -> &str {
-//         "file dialog app"
-//     }
-//     fn update(&mut self, ctx: &egui::CtxRef, _frame: &mut epi::Frame<'_>) {
-//         // This is important, otherwise file dialog can hang
-//         // and messages are not processed
-//         ctx.request_repaint();
-
-//         loop {
-//             match self.message_channel.1.try_recv() {
-//                 Ok(_message) => {
-//                     // Process FileOpen and other messages
-//                 }
-//                 Err(_) => {
-//                     break;
-//                 }
-//             }
-//         }
-
-//         egui::CentralPanel::default().show(ctx, |ui| {
-//             let open_button = ui.add(egui::widgets::Button::new("Open..."));
-
-//             if open_button.clicked() {
-//                 let task = rfd::AsyncFileDialog::new()
-//                     .add_filter("Text files", &["txt"])
-//                     .set_directory("/")
-//                     .pick_file();
-
-//                 let message_sender = self.message_channel.0.clone();
-
-//                 execute(async move {
-//                     let file = task.await;
-
-//                     if let Some(file) = file {
-//                         message_sender.send(file.read().await).ok();
-//                     }
-//                 });
-
-//             }
-//         });
-//     }
-// }
-
-// #[cfg(not(target_arch = "wasm32"))]
-// fn execute<F: Future<Output = ()> + Send + 'static>(f: F) {
-//     std::thread::spawn(move || futures::executor::block_on(f));
-// }
-// #[cfg(target_arch = "wasm32")]
-// fn execute<F: Future<Output = ()> + 'static>(f: F) {
-//     wasm_bindgen_futures::spawn_local(f);
-// }