Struct SimpleCallback 

pub struct SimpleCallback;

简单的回调实现，只打印进度信息

Trait Implementations

impl Clone for SimpleCallback

fn clone(&self) -> SimpleCallback

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl ProgressCallback for SimpleCallback

fn on_file_start<'life0, 'life1, 'async_trait>( &'life0 self, file_name: &'life1 str, file_size: u64, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

当文件下载开始时调用

fn on_file_progress<'life0, 'life1, 'async_trait>( &'life0 self, file_name: &'life1 str, downloaded: u64, total: u64, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

当文件下载进度更新时调用

fn on_file_complete<'life0, 'life1, 'async_trait>( &'life0 self, file_name: &'life1 str, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

当文件下载完成时调用

fn on_file_error<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, file_name: &'life1 str, error: &'life2 str, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

当文件下载失败时调用