async widget

11 files changed, 213 insertions, 126 deletions

diff --git a/src/coordinates.rs b/src/coordinates.rs
index d4dc914..5861f72 100644
--- a/src/coordinates.rs
+++ b/src/coordinates.rs
@@ -40,6 +40,18 @@ impl Coordinates {
         &self.position
     }
 
+    pub fn u16position(&self) -> (u16, u16) {
+        self.position.position()
+    }
+
+    pub fn size(&self) -> &Size {
+        &self.size
+    }
+
+    pub fn u16size(&self) -> (u16, u16) {
+        self.size.size()
+    }
+
     pub fn top(&self) -> Position {
         self.position().clone()
     }
diff --git a/src/file_browser.rs b/src/file_browser.rs
index 667e708..a499c5b 100644
--- a/src/file_browser.rs
+++ b/src/file_browser.rs
@@ -16,7 +16,7 @@ pub struct FileBrowser {
 }
 
 impl Tabbable<FileBrowser> for FileBrowser {
-    fn new_tab(&self) -> Self {
+    fn new_tab(&self) -> FileBrowser {
         FileBrowser::new().unwrap()
     }
 
@@ -115,8 +115,12 @@ impl FileBrowser {
     pub fn update_preview(&mut self) {
         if self.columns.get_main_widget().content.len() == 0 { return }
         let file = self.columns.get_main_widget().selected_file().clone();
-        let preview = &mut self.columns.preview;
+        //let preview = &mut self.columns.preview;
+        let coords = self.columns.preview.get_coordinates();
+        let mut preview = crate::preview::AsyncPreviewer::new();
+        preview.set_coordinates(&coords);
         preview.set_file(&file);
+        self.columns.preview = preview;
     }
 
     pub fn fix_selection(&mut self) {
@@ -188,18 +192,6 @@ impl FileBrowser {
 }
 
 impl Widget for FileBrowser {
-    fn get_size(&self) -> &Size {
-        &self.columns.get_size()
-    }
-    fn get_position(&self) -> &Position {
-        &self.columns.get_position()
-    }
-    fn set_size(&mut self, size: Size) {
-        self.columns.set_size(size);
-    }
-    fn set_position(&mut self, position: Position) {
-        self.columns.set_position(position);
-    }
     fn get_coordinates(&self) -> &Coordinates {
         &self.columns.coordinates
     }
diff --git a/src/files.rs b/src/files.rs
index 4bd0f45..03f0dc6 100644
--- a/src/files.rs
+++ b/src/files.rs
@@ -26,7 +26,7 @@ pub struct Files {
 
 impl Index<usize> for Files {
     type Output = File;
-    fn index(&self, pos: usize) -> &Self::Output {
+    fn index(&self, pos: usize) -> &File {
         &self.files[pos]
     }
 }
diff --git a/src/hbox.rs b/src/hbox.rs
index cdd7023..23c580b 100644
--- a/src/hbox.rs
+++ b/src/hbox.rs
@@ -11,7 +11,7 @@ pub struct HBox<T: Widget> {
 }
 
 
-impl<T> HBox<T> where T: Widget {
+impl<T> HBox<T> where T: Widget + PartialEq {
     pub fn new() -> HBox<T> {
         HBox { coordinates: Coordinates::new(),
                widgets: vec![],
@@ -78,7 +78,7 @@ impl<T> HBox<T> where T: Widget {
 
 
 
-impl<T> Widget for HBox<T> where T: Widget {
+impl<T> Widget for HBox<T> where T: Widget + PartialEq {
     fn render_header(&self) -> String {
         self.active_widget().render_header()
     }
@@ -96,18 +96,6 @@ impl<T> Widget for HBox<T> where T: Widget {
         }).collect()
     }
 
-    fn get_size(&self) -> &Size {
-        &self.coordinates.size
-    }
-    fn get_position(&self) -> &Position {
-        &self.coordinates.position
-    }
-    fn set_size(&mut self, size: Size) {
-        self.coordinates.size = size;
-    }
-    fn set_position(&mut self, position: Position) {
-        self.coordinates.position = position;
-    }
     fn get_coordinates(&self) -> &Coordinates {
         &self.coordinates
     }
diff --git a/src/listview.rs b/src/listview.rs
index 92e5111..cec6630 100644
--- a/src/listview.rs
+++ b/src/listview.rs
@@ -4,11 +4,12 @@ use unicode_width::UnicodeWidthStr;
 
 use std::path::{Path, PathBuf};
 use std::io::Write;
+//use std::sync::mpsc::{channel, Sender, Receiver};
 
 use crate::coordinates::{Coordinates, Position, Size};
 use crate::files::{File, Files};
 use crate::term;
-use crate::widget::Widget;
+use crate::widget::{Widget};
 
 // Maybe also buffer drawlist for efficiency when it doesn't change every draw
 
@@ -30,7 +31,7 @@ where
     ListView<T>: Widget,
     T: Send,
 {
-    pub fn new(content: T) -> Self {
+    pub fn new(content: T) -> ListView<T> {
         let view = ListView::<T> {
             content: content,
             selection: 0,
@@ -81,7 +82,8 @@ where
         let ysize = self.coordinates.ysize() as usize;
         let mut offset = 0;
 
-        while position + 2 >= ysize + offset {
+        while position + 2
+            >= ysize + offset {
             offset += 1
         }
 
@@ -99,7 +101,7 @@ where
         } else { (name.clone(), "".to_string()) };
 
 
-        let xsize = self.get_size().xsize();
+        let xsize = self.get_coordinates().xsize();
         let sized_string = term::sized_string(&name, xsize);
         let size_pos = xsize - (size.to_string().len() as u16
                                 + unit.to_string().len() as u16);
@@ -321,8 +323,8 @@ where
                     .arg("-c")
                     .arg(&cmd)
                     .status();
-
-                write!(std::io::stdout(), "{}{}",
+                let mut bufout = std::io::BufWriter::new(std::io::stdout());
+                write!(bufout, "{}{}",
                        termion::style::Reset,
                        termion::clear::All).unwrap();
 
@@ -347,18 +349,6 @@ where
 }
 
 impl Widget for ListView<Files> {
-    fn get_size(&self) -> &Size {
-        &self.coordinates.size
-    }
-    fn get_position(&self) -> &Position {
-        &self.coordinates.position
-    }
-    fn set_size(&mut self, size: Size) {
-        self.coordinates.size = size;
-    }
-    fn set_position(&mut self, position: Position) {
-        self.coordinates.position = position;
-    }
     fn get_coordinates(&self) -> &Coordinates {
         &self.coordinates
     }
@@ -376,7 +366,7 @@ impl Widget for ListView<Files> {
 
     fn get_drawlist(&self) -> String {
         let mut output = term::reset();
-        let (_, ysize) = self.get_size().size();
+        let ysize = self.get_coordinates().ysize();
         let (xpos, ypos) = self.coordinates.position().position();
 
         output += &self
diff --git a/src/main.rs b/src/main.rs
index 2798311..602fb11 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,4 +1,5 @@
 #![feature(vec_remove_item)]
+#![feature(trivial_bounds)]
 
 extern crate termion;
 extern crate unicode_width;
@@ -18,6 +19,7 @@ use termion::raw::IntoRawMode;
 use termion::screen::AlternateScreen;
 
 use std::io::{stdout, Write};
+use std::marker::Send;
 
 mod coordinates;
 mod file_browser;
@@ -32,12 +34,16 @@ mod win_main;
 mod window;
 mod hbox;
 mod tabview;
+mod async_widget;
 
 use window::Window;
+use async_widget::AsyncPlug;
+use widget::Widget;
 
 fn main() {
+    let mut bufout = std::io::BufWriter::new(std::io::stdout());
     // Need to do this here to actually turn terminal into raw mode...
-    let mut _screen = AlternateScreen::from(Box::new(stdout()));
+    let mut _screen = AlternateScreen::from(Box::new(bufout));
     let mut _stdout = MouseTerminal::from(stdout().into_raw_mode().unwrap());
 
     
diff --git a/src/miller_columns.rs b/src/miller_columns.rs
index 4114326..66113c6 100644
--- a/src/miller_columns.rs
+++ b/src/miller_columns.rs
@@ -1,7 +1,7 @@
 use termion::event::Key;
 
 use crate::coordinates::{Coordinates, Position, Size};
-use crate::preview::Previewer;
+use crate::preview::AsyncPreviewer;
 use crate::widget::Widget;
 use crate::hbox::HBox;
 
@@ -10,21 +10,21 @@ pub struct MillerColumns<T> where T: Widget {
     pub widgets: HBox<T>,
     // pub left: Option<T>,
     // pub main: Option<T>,
-    pub preview: Previewer,
+    pub preview: AsyncPreviewer,
     pub ratio: (u16, u16, u16),
     pub coordinates: Coordinates,
 }
 
 impl<T> MillerColumns<T>
 where
-    T: Widget,
+    T: Widget + PartialEq,
 {
-    pub fn new() -> Self {
-        Self {
+    pub fn new() -> MillerColumns<T> {
+        MillerColumns {
             widgets: HBox::new(),
             coordinates: Coordinates::new(),
             ratio: (20, 30, 50),
-            preview: Previewer::new(),
+            preview: AsyncPreviewer::new(),
         }
     }
 
@@ -91,7 +91,6 @@ where
         if len < 2 {
             return None;
         }
-        self.widgets.widgets.get(len - 2)?.get_position();
         self.widgets.widgets.get_mut(len - 2)
     }
     pub fn get_main_widget(&self) -> &T {
@@ -105,19 +104,8 @@ where
 impl<T> Widget for MillerColumns<T>
 where
     T: Widget,
+    T: PartialEq
 {
-    fn get_size(&self) -> &Size {
-        &self.coordinates.size
-    }
-    fn get_position(&self) -> &Position {
-        &self.coordinates.position
-    }
-    fn set_size(&mut self, size: Size) {
-        self.coordinates.size = size;
-    }
-    fn set_position(&mut self, position: Position) {
-        self.coordinates.position = position;
-    }
     fn get_coordinates(&self) -> &Coordinates {
         &self.coordinates
     }
diff --git a/src/preview.rs b/src/preview.rs
index d6bf31d..f6bad98 100644
--- a/src/preview.rs
+++ b/src/preview.rs
@@ -7,6 +7,7 @@ use crate::files::{File, Files, Kind};
 use crate::listview::ListView;
 use crate::textview::TextView;
 use crate::widget::Widget;
+use crate::async_widget::AsyncPlug;
 
 
 lazy_static! {
@@ -23,10 +24,130 @@ fn kill_procs() {
 }
 
 fn is_current(file: &File) -> bool {
-    CURFILE.lock().unwrap().as_ref().unwrap() == file
+    true
+    //CURFILE.lock().unwrap().as_ref().unwrap() == file
 }
 
+#[derive(PartialEq)]
+pub struct AsyncPreviewer {
+    pub file: Option<File>,
+    pub buffer: String,
+    pub coordinates: Coordinates,
+    pub async_plug: AsyncPlug
+}
+
+impl AsyncPreviewer {
+    pub fn new() -> AsyncPreviewer {
+        let textview = crate::textview::TextView {
+            lines: vec![],
+            buffer: "".to_string(),
+            coordinates: Coordinates::new(),
+        };
+        let textview = Box::new(textview);
+
+        AsyncPreviewer {
+            file: None,
+            buffer: String::new(),
+            coordinates: Coordinates::new(),
+            async_plug: AsyncPlug::new(textview)
+        }
+    }
+    pub fn set_file(&mut self, file: &File) {
+        let coordinates = self.coordinates.clone();
+        let file = file.clone();
+        let redraw = crate::term::reset() + &self.get_redraw_empty_list(0);
+
+        self.async_plug.replace_widget(Box::new(move || {
+            kill_procs();
+            let mut bufout = std::io::BufWriter::new(std::io::stdout());
+            match &file.kind {
+                Kind::Directory => match Files::new_from_path(&file.path) {
+                    Ok(files) => {
+                        //if !is_current(&file) { return }
+                        let len = files.len();
+                        //if len == 0 { return };
+                        let mut file_list = ListView::new(files);
+                        file_list.set_coordinates(&coordinates);
+                        file_list.refresh();
+                        //if !is_current(&file) { return }
+                        file_list.animate_slide_up();
+                        return Box::new(file_list) as Box<dyn Widget + Send>;
+
+                    }
+                    Err(err) => {
+                        write!(bufout, "{}", redraw).unwrap();
+                        let textview = crate::textview::TextView {
+                            lines: vec![],
+                            buffer: "".to_string(),
+                            coordinates: Coordinates::new(),
+                        };
+                        return Box::new(textview) as Box<dyn Widget + Send>;
+                    },
+                }
+                _ => {
+                    if file.get_mime() == Some("text".to_string()) {
+                        let mut textview = TextView::new_from_file(&file);
+                        //if !is_current(&file) { return }
+                        textview.set_coordinates(&coordinates);
+                        textview.refresh();
+                        //if !is_current(&file) { return }
+                        textview.animate_slide_up();
+                        return Box::new(textview);
+                    } else {
+                        let process =
+                            std::process::Command::new("scope.sh")
+                            .arg(&file.name)
+                            .arg("10".to_string())
+                            .arg("10".to_string())
+                            .arg("".to_string())
+                            .arg("false".to_string())
+                            .stdin(std::process::Stdio::null())
+                            .stdout(std::process::Stdio::piped())
+                            .stderr(std::process::Stdio::null())
+                            .spawn().unwrap();
+
+                        // let pid = process.id();
+                        // PIDS.lock().unwrap().push(pid);
 
+                        //if !is_current(&file) { return }
+
+                        let output = process.wait_with_output();
+                        //if output.is_err() { return }
+                        let output = output.unwrap();
+
+                        let status = output.status.code();
+                        //if status.is_none() { return }
+                        let status = status.unwrap();
+
+                        if status == 0 || status == 5 && is_current(&file) {
+                            let output = std::str::from_utf8(&output.stdout)
+                                .unwrap()
+                                .to_string();
+                            let mut textview = TextView {
+                                lines: output.lines().map(|s| s.to_string()).collect(),
+                                buffer: String::new(),
+                                coordinates: Coordinates::new() };
+                            textview.set_coordinates(&coordinates);
+                            textview.refresh();
+                            textview.animate_slide_up();
+                            return Box::new(textview);
+                        }
+
+                    }
+
+                    write!(bufout, "{}", redraw).unwrap();
+                    //std::io::stdout().flush().unwrap();
+                    let textview = crate::textview::TextView {
+                        lines: vec![],
+                        buffer: "".to_string(),
+                        coordinates: Coordinates::new(),
+                    };
+                    return Box::new(textview);
+                }
+            }
+        }));
+    }
+}
 
 #[derive(PartialEq)]
 pub struct Previewer {
@@ -129,18 +250,32 @@ impl Previewer {
 }
 
 impl Widget for Previewer {
-    fn get_size(&self) -> &Size {
-        &self.coordinates.size
+    fn get_coordinates(&self) -> &Coordinates {
+        &self.coordinates
     }
-    fn set_size(&mut self, size: Size) {
-        self.coordinates.size = size;
+    fn set_coordinates(&mut self, coordinates: &Coordinates) {
+        if self.coordinates == *coordinates {
+            return;
+        }
+        self.coordinates = coordinates.clone();
+        self.refresh();
     }
-    fn get_position(&self) -> &Position {
-        &self.coordinates.position
+    fn render_header(&self) -> String {
+        "".to_string()
     }
-    fn set_position(&mut self, pos: Position) {
-        self.coordinates.position = pos;
+    fn refresh(&mut self) {
+        let file = self.file.clone();
+        if let Some(file) = file {
+            self.set_file(&file);
+        }
+    }
+    fn get_drawlist(&self) -> String {
+        self.buffer.clone()
     }
+}
+
+
+impl Widget for AsyncPreviewer {
     fn get_coordinates(&self) -> &Coordinates {
         &self.coordinates
     }
@@ -149,7 +284,8 @@ impl Widget for Previewer {
             return;
         }
         self.coordinates = coordinates.clone();
-        self.refresh();
+        self.async_plug.set_coordinates(&coordinates.clone());
+        self.async_plug.refresh();
     }
     fn render_header(&self) -> String {
         "".to_string()
@@ -161,6 +297,7 @@ impl Widget for Previewer {
         }
     }
     fn get_drawlist(&self) -> String {
-        self.buffer.clone()
+        self.async_plug.get_drawlist();
+        "".to_string()
     }
 }
diff --git a/src/tabview.rs b/src/tabview.rs
index 59e5872..39286a0 100644
--- a/src/tabview.rs
+++ b/src/tabview.rs
@@ -10,15 +10,15 @@ pub trait Tabbable<T: Widget> {
 
 
 #[derive(PartialEq)]
-pub struct TabView<T> where T: Widget {
+pub struct TabView<T> where T: Widget, T: Tabbable<T> {
     widgets: Vec<T>,
     active: usize,
     coordinates: Coordinates
 }
 
-impl<T> TabView<T> where T: Widget + Tabbable<T> {
-    pub fn new() -> Self {
-        Self {
+impl<T> TabView<T> where T: Widget, T: Tabbable<T> {
+    pub fn new() -> TabView<T> {
+        TabView {
             widgets: vec![],
             active: 0,
             coordinates: Coordinates::new()
@@ -67,7 +67,7 @@ impl<T> TabView<T> where T: Widget + Tabbable<T> {
     }
 }
 
-impl<T> Widget for TabView<T> where T: Widget + Tabbable<T> + PartialEq {
+impl<T> Widget for TabView<T> where T: Widget + Tabbable<T> {
     fn render_header(&self) -> String {
         let xsize = self.get_coordinates().xsize();
         let header = self.active_widget().render_header();
@@ -106,18 +106,6 @@ impl<T> Widget for TabView<T> where T: Widget + Tabbable<T> + PartialEq {
         self.active_widget().get_drawlist()
     }
 
-    fn get_size(&self) -> &Size {
-        &self.coordinates.size
-    }
-    fn get_position(&self) -> &Position {
-        &self.coordinates.position
-    }
-    fn set_size(&mut self, size: Size) {
-        self.coordinates.size = size;
-    }
-    fn set_position(&mut self, position: Position) {
-        self.coordinates.position = position;
-    }
     fn get_coordinates(&self) -> &Coordinates {
         &self.coordinates
     }
diff --git a/src/textview.rs b/src/textview.rs
index ad76ca8..04e0fbf 100644
--- a/src/textview.rs
+++ b/src/textview.rs
@@ -31,18 +31,6 @@ impl TextView {
 }
 
 impl Widget for TextView {
-    fn get_size(&self) -> &Size {
-        &self.coordinates.size
-    }
-    fn set_size(&mut self, size: Size) {
-        self.coordinates.size = size;
-    }
-    fn get_position(&self) -> &Position {
-        &self.coordinates.position
-    }
-    fn set_position(&mut self, pos: Position) {
-        self.coordinates.position = pos;
-    }
     fn get_coordinates(&self) -> &Coordinates {
         &self.coordinates
     }
@@ -54,7 +42,7 @@ impl Widget for TextView {
         "".to_string()
     }
     fn refresh(&mut self) {
-        let (xsize, ysize) = self.get_size().size();
+        let (xsize, ysize) = self.get_coordinates().size().size();
         let (xpos, ypos) = self.get_coordinates().position().position();
 
         self.buffer = self.get_clearlist() +
diff --git a/src/widget.rs b/src/widget.rs
index 465d625..5cbcec6 100644
--- a/src/widget.rs
+++ b/src/widget.rs
@@ -2,18 +2,17 @@ use termion::event::{Event, Key, MouseEvent};
 
 use crate::coordinates::{Coordinates, Position, Size};
 
-use std::io::Write;
-
-pub trait Widget: PartialEq {
-    //fn render(&self) -> Vec<String>;
-    fn get_size(&self) -> &Size;
-    fn get_position(&self) -> &Position;
-    fn set_size(&mut self, size: Size);
-    fn set_position(&mut self, position: Position);
+use std::io::{BufWriter, Write};
+
+
+pub trait Widget {
     fn get_coordinates(&self) -> &Coordinates;
     fn set_coordinates(&mut self, coordinates: &Coordinates);
     fn render_header(&self) -> String;
     fn render_footer(&self) -> String { "".into() }
+    fn refresh(&mut self);
+    fn get_drawlist(&self) -> String;
+
 
     fn on_event(&mut self, event: Event) {
         match event {
@@ -62,7 +61,7 @@ pub trait Widget: PartialEq {
             " ",
             crate::term::goto_xy(1, 1),
             self.render_header(),
-            xsize = self.get_size().xsize() as usize
+            xsize = self.get_coordinates().xsize() as usize
         )
     }
 
@@ -80,8 +79,8 @@ pub trait Widget: PartialEq {
     }
 
     fn get_clearlist(&self) -> String {
-        let (xpos, ypos) = self.get_position().position();
-        let (xsize, ysize) = self.get_size().size();
+        let (xpos, ypos) = self.get_coordinates().u16position();
+        let (xsize, ysize) = self.get_coordinates().u16size();
 
         (ypos..ysize + 2)
             .map(|line| {
@@ -97,8 +96,8 @@ pub trait Widget: PartialEq {
     }
 
     fn get_redraw_empty_list(&self, lines: usize) -> String {
-        let (xpos, ypos) = self.get_position().position();
-        let (xsize, ysize) = self.get_size().size();
+        let (xpos, ypos) = self.get_coordinates().u16position();
+        let (xsize, ysize) = self.get_coordinates().u16size();
 
         let start_y = lines + ypos as usize;
         (start_y..(ysize + 2) as usize)
@@ -121,6 +120,7 @@ pub trait Widget: PartialEq {
         let ysize = coords.ysize();
         let clear = self.get_clearlist();
         let pause = std::time::Duration::from_millis(5);
+        let mut bufout = std::io::BufWriter::new(std::io::stdout());
 
         for i in (0..10).rev() {
             let coords = Coordinates { size: Size((xsize,ysize-i)),
@@ -130,13 +130,11 @@ pub trait Widget: PartialEq {
             };
             self.set_coordinates(&coords);
             let buffer = self.get_drawlist();
-            write!(std::io::stdout(), "{}{}",
+            write!(bufout, "{}{}",
                    clear, buffer).unwrap();
 
+
             std::thread::sleep(pause);
         }
     }
-
-    fn refresh(&mut self);
-    fn get_drawlist(&self) -> String;
 }