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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,26 +1,152 @@ | ||
| #![cfg(feature = "wasm")] | ||
| use yew::prelude::*; | ||
|
|
||
| #[function_component] | ||
| fn App() -> Html { | ||
| let counter = use_state(|| 0); | ||
| let onclick = { | ||
| let counter = counter.clone(); | ||
| move |_| { | ||
| let value = *counter + 1; | ||
| counter.set(value); | ||
| extern crate base64; | ||
| use std::collections::HashMap; | ||
|
|
||
|
|
||
| use base64::engine::general_purpose::STANDARD; | ||
| use base64::Engine; | ||
| use gloo::file::callbacks::FileReader; | ||
| use gloo::file::File; | ||
| use web_sys::{DragEvent, Event, FileList, HtmlInputElement}; | ||
| use yew::html::TargetCast; | ||
| use yew::{html, Callback, Component, Context, Html}; | ||
|
|
||
| struct FileDetails { | ||
| name: String, | ||
| file_type: String, | ||
| data: Vec<u8>, | ||
| } | ||
|
|
||
| pub enum Msg { | ||
| Loaded(String, String, Vec<u8>), | ||
| Files(Vec<File>), | ||
| } | ||
|
|
||
| pub struct App { | ||
| readers: HashMap<String, FileReader>, | ||
| files: Vec<FileDetails>, | ||
| } | ||
|
|
||
| impl Component for App { | ||
| type Message = Msg; | ||
| type Properties = (); | ||
|
|
||
| fn create(_ctx: &Context<Self>) -> Self { | ||
| Self { | ||
| readers: HashMap::default(), | ||
| files: Vec::default(), | ||
| } | ||
| } | ||
|
|
||
| fn update(&mut self, ctx: &Context<Self>, msg: Self::Message) -> bool { | ||
| match msg { | ||
| Msg::Loaded(file_name, file_type, data) => { | ||
| self.files.push(FileDetails { | ||
| data, | ||
| file_type, | ||
| name: file_name.clone(), | ||
| }); | ||
| self.readers.remove(&file_name); | ||
| true | ||
| } | ||
| Msg::Files(files) => { | ||
| for file in files.into_iter() { | ||
| let file_name = file.name(); | ||
| let file_type = file.raw_mime_type(); | ||
|
|
||
| let task = { | ||
| let link = ctx.link().clone(); | ||
| let file_name = file_name.clone(); | ||
|
|
||
| gloo::file::callbacks::read_as_bytes(&file, move |res| { | ||
| link.send_message(Msg::Loaded( | ||
| file_name, | ||
| file_type, | ||
| res.expect("failed to read file"), | ||
| )) | ||
| }) | ||
| }; | ||
| self.readers.insert(file_name, task); | ||
| } | ||
| true | ||
| } | ||
| } | ||
| }; | ||
| } | ||
|
|
||
| html! { | ||
| <div> | ||
| <button {onclick}>{ "+1" }</button> | ||
| <p>{ *counter }</p> | ||
| </div> | ||
| fn view(&self, ctx: &Context<Self>) -> Html { | ||
| html! { | ||
| <div id="wrapper"> | ||
| <p id="title">{ "Upload Your Files To The Cloud" }</p> | ||
| <label for="file-upload"> | ||
| <div | ||
| id="drop-container" | ||
| ondrop={ctx.link().callback(|event: DragEvent| { | ||
| event.prevent_default(); | ||
| let files = event.data_transfer().unwrap().files(); | ||
| Self::upload_files(files) | ||
| })} | ||
| ondragover={Callback::from(|event: DragEvent| { | ||
| event.prevent_default(); | ||
| })} | ||
| ondragenter={Callback::from(|event: DragEvent| { | ||
| event.prevent_default(); | ||
| })} | ||
| > | ||
| <i class="fa fa-cloud-upload"></i> | ||
| <p>{"Drop your images here or click to select"}</p> | ||
| </div> | ||
| </label> | ||
| <input | ||
| id="file-upload" | ||
| type="file" | ||
| accept="image/*,video/*" | ||
| multiple={true} | ||
| onchange={ctx.link().callback(move |e: Event| { | ||
| let input: HtmlInputElement = e.target_unchecked_into(); | ||
| Self::upload_files(input.files()) | ||
| })} | ||
| /> | ||
| <div id="preview-area"> | ||
| { for self.files.iter().map(Self::view_file) } | ||
| </div> | ||
| </div> | ||
| } | ||
| } | ||
| } | ||
|
|
||
| fn main() -> Result<(), Box<dyn std::error::Error>> { | ||
| yew::Renderer::<App>::new().render(); | ||
| Ok(()) | ||
| impl App { | ||
| fn view_file(file: &FileDetails) -> Html { | ||
| html! { | ||
| <div class="preview-tile"> | ||
| <p class="preview-name">{ format!("{}", file.name) }</p> | ||
| <div class="preview-media"> | ||
| if file.file_type.contains("image") { | ||
| <img src={format!("data:{};base64,{}", file.file_type, STANDARD.encode(&file.data))} /> | ||
| } else if file.file_type.contains("video") { | ||
| <video controls={true}> | ||
| <source src={format!("data:{};base64,{}", file.file_type, STANDARD.encode(&file.data))} type={file.file_type.clone()}/> | ||
| </video> | ||
| } | ||
| </div> | ||
| </div> | ||
| } | ||
| } | ||
|
|
||
| fn upload_files(files: Option<FileList>) -> Msg { | ||
| let mut result = Vec::new(); | ||
|
|
||
| if let Some(files) = files { | ||
| let files = js_sys::try_iter(&files) | ||
| .unwrap() | ||
| .unwrap() | ||
| .map(|v| web_sys::File::from(v.unwrap())) | ||
| .map(File::from); | ||
| result.extend(files); | ||
| } | ||
| Msg::Files(result) | ||
| } | ||
| } | ||
|
|
||
| fn main() { | ||
| yew::Renderer::<App>::new().render(); | ||
| } |