pty wrapper

shell/src/main.rs

@@ -3,6 +3,7 @@ extern crate portable_pty;
 
 mod monstera;
 mod process;
+mod pty;
 
 use{
     std::sync::{Arc, RwLock},
@@ -12,9 +13,11 @@ use{
         core::{
             View,
             ViewPort,
+            InnerViewPort,
             OuterViewPort,
             Observer,
             ObserverExt,
+            ObserverBroadcast,
             context::{ReprTree, Object, MorphismType, MorphismMode, Context},
             port::{UpdateTask}},
         index::{IndexView},
@@ -43,7 +46,40 @@ use{
 
 struct AsciiBox {
     content: Option<Arc<dyn TerminalView>>,
-    extent: Vector2<i16>
+    extent: Vector2<i16>,
+
+    cast: Arc<RwLock<ObserverBroadcast<dyn TerminalView>>>
+}
+
+impl AsciiBox {
+    pub fn new(
+        extent: Vector2<i16>,
+        content_port: OuterViewPort<dyn TerminalView>,
+        output_port: InnerViewPort<dyn TerminalView>
+    ) -> Arc<RwLock<Self>> {
+        let ascii_box = Arc::new(RwLock::new(AsciiBox {
+            content: None,
+            extent,
+            cast: output_port.get_broadcast()
+        }));
+
+        output_port.0.update_hooks.write().unwrap().push(Arc::new(content_port.0.clone()));
+        output_port.set_view(Some(ascii_box.clone()));
+        content_port.add_observer(ascii_box.clone());
+
+        ascii_box
+    }
+}
+
+impl Observer<dyn TerminalView> for AsciiBox {
+    fn reset(&mut self, new_content: Option<Arc<dyn TerminalView>>) {
+        self.content = new_content;
+        self.notify_each(GridWindowIterator::from(Point2::new(0, 0) ..= Point2::new(self.extent.x, self.extent.y)));
+    }
+
+    fn notify(&mut self, pt: &Point2<i16>) {
+        self.cast.notify(&(pt + Vector2::new(1, 1)));
+    }
 }
 
 impl View for AsciiBox {
@@ -130,8 +166,8 @@ async fn main() {
                 (Point2::new(0, 2), magic.clone()),
             ]);
 
-            //compositor.write().unwrap().push(monstera::make_monstera());
+            compositor.write().unwrap().push(monstera::make_monstera());
-            compositor.write().unwrap().push(table_port.outer().flatten());//.offset(Vector2::new(40, 2)));
+            compositor.write().unwrap().push(table_port.outer().flatten().offset(Vector2::new(40, 2)));
 
             let mut y = 4;
 
@@ -142,14 +178,34 @@ async fn main() {
                 leaf_mode: ListCursorMode::Insert,
                 tree_addr: vec![ 0 ]
             });
-/*
-            let mut last_box = Arc::new(RwLock::new(AsciiBox{
 
-            }));
+            let mut pty : Option<pty::PTY> = None;
-*/
+
             loop {
                 term_port.update();
-                match term.next_event().await {
+                if let Some(p) = pty.as_mut() {
+                    if p.get_status() {
+                        pty = None;
+                       
+                        process_launcher = ProcessLauncher::new();
+                        process_launcher.goto(TreeCursor {
+                            leaf_mode: ListCursorMode::Insert,
+                            tree_addr: vec![ 0 ]
+                        });
+
+                        y += 1;
+                        table_buf.insert(Point2::new(0, y), process_launcher.get_term_view());
+                    }
+                }
+                term_port.update();
+
+                let ev = term.next_event().await;
+
+                if let Some(pty) = pty.as_mut() {
+                    pty.handle_terminal_event(&ev);
+                } else {
+
+                match ev {
                     TerminalEvent::Resize(new_size) => {
                         cur_size.set(new_size);
                         term_port.inner().get_broadcast().notify_each(
@@ -168,9 +224,13 @@ async fn main() {
                     TerminalEvent::Input(Event::Key(Key::Right)) => {
                         process_launcher.nexd();
                     }
-                    TerminalEvent::Input(Event::Key(Key::Up)) => { process_launcher.up(); }
+                    TerminalEvent::Input(Event::Key(Key::Up)) => {
+                        if process_launcher.up() == TreeNavResult::Exit {
+                            //process_launcher.dn();
+                            //process_launcher.goto_home();
+                        }
+                    }
                     TerminalEvent::Input(Event::Key(Key::Down)) => {
-                        //process_launcher.dn();
                         if process_launcher.dn() == TreeNavResult::Continue {
                             process_launcher.goto_home();
                         }
@@ -182,30 +242,25 @@ async fn main() {
                         process_launcher.goto_end();
                     }
                     TerminalEvent::Input(Event::Key(Key::Char('\n'))) => {
-                        let output_view = process_launcher.launch();
+                        let mut output_port = ViewPort::new();
+                        pty = process_launcher.launch_pty(output_port.inner());
 
                         let box_port = ViewPort::new();                        
-                        let test_box = Arc::new(RwLock::new(AsciiBox {
+                        let test_box = AsciiBox::new(
-                            content: Some(output_view.map_item(|_,a| a.add_style_back(TerminalStyle::fg_color((230, 230, 230)))).get_view().unwrap()),
+                            Vector2::new(81, 26),
-                            extent: Vector2::new(120,30)
+                            output_port.outer()
-                        }));
+                                .map_item(|_,a| a.add_style_back(TerminalStyle::fg_color((230, 230, 230)))),
+                            box_port.inner()
+                        );
 
-                        box_port.inner().set_view(Some(test_box.clone() as Arc<dyn TerminalView>));
+                        table_buf.remove(Point2::new(0, y-1));
 
-                        table_buf.insert(Point2::new(0, y-1), ViewPort::new().outer());
+                        let mut p = box_port.outer().map_item(|_idx, x| x.add_style_back(TerminalStyle::fg_color((90, 120, 100))))
-                        y += 1;
+                            .offset(Vector2::new(0, -1));
-                        table_buf.insert(Point2::new(0, y), box_port.outer()
+                        table_port.update_hooks.write().unwrap().push(Arc::new(p.clone().0));
-                                                         .map_item(|_idx, x| x.add_style_back(TerminalStyle::fg_color((90, 120, 100))))
-                                                         .offset(Vector2::new(0, -1)));
-
-                        process_launcher = ProcessLauncher::new();
-                        process_launcher.goto(TreeCursor {
-                            leaf_mode: ListCursorMode::Insert,
-                            tree_addr: vec![ 0 ]
-                        });
 
                         y += 1;
-                        table_buf.insert(Point2::new(0, y), process_launcher.get_term_view());
+                        table_buf.insert(Point2::new(0, y), p.clone());
                     }
 
                     ev => {
@@ -226,6 +281,7 @@ async fn main() {
                         }
                     }
                 }
+                }
 
                 status_chars.clear();
                 let cur = process_launcher.get_cursor();

shell/src/process.rs

@@ -8,7 +8,7 @@ use {
     termion::event::{Key, Event},
     cgmath::Point2,
     nested::{
-        core::{ViewPort, OuterViewPort, Observer},
+        core::{OuterViewPort, InnerViewPort, Observer},
         singleton::{SingletonView, SingletonBuffer},
         sequence::{SequenceView, SequenceViewExt},
         index::buffer::IndexBuffer,
@@ -19,7 +19,6 @@ use {
         string_editor::CharEditor,
     }
 };
-use portable_pty::{CommandBuilder, PtySize, native_pty_system, PtySystem};
 
 //<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>>
 
@@ -96,7 +95,7 @@ impl ProcessLauncher {
         }
     }
 
-    pub fn launch(&mut self) -> (OuterViewPort<dyn TerminalView>) {
+    pub fn launch_pty(&mut self, port: InnerViewPort<dyn TerminalView>) -> Option<crate::pty::PTY> {
         self.up();
         self.up();
 
@@ -109,45 +108,13 @@ impl ProcessLauncher {
         }
 
         if strings.len() > 0 {
-            // Create a new pty
-            let mut pair = native_pty_system().openpty(PtySize {
-                rows: 30,
-                cols: 120,
-                // Not all systems support pixel_width, pixel_height,
-                // but it is good practice to set it to something
-                // that matches the size of the selected font.  That
-                // is more complex than can be shown here in this
-                // brief example though!
-                pixel_width: 0,
-                pixel_height: 0,
-            }).unwrap();
-
             // Spawn a shell into the pty
-            let mut cmd = CommandBuilder::new(strings[0].as_str());
+            let mut cmd = crate::pty::CommandBuilder::new(strings[0].as_str());
             cmd.args(&strings[1..]);
 
-            if let Ok(child) = pair.slave.spawn_command(cmd) {
+            crate::pty::PTY::new(cmd, port)
-                // Read and parse output from the pty with reader
-                let mut reader = pair.master.try_clone_reader().unwrap();
-
-                // Send data to the pty by writing to the master
-                //writeln!(pair.master, "ls -l\r\n");
-
-                let port = ViewPort::new();
-                let p = port.inner();
-                async_std::task::spawn_blocking(
-                    move || {
-                        nested::terminal::ansi_parser::read_ansi_from(&mut reader, p);
-                    });
-
-                port.into_outer()
-            } else {
-                make_label("invalid command")
-                    .map_item(|idx, a| a.add_style_back(TerminalStyle::fg_color((200,0,0))))
-            }
         } else {
-            make_label("no command")
+            None
-                .map_item(|idx, a| a.add_style_back(TerminalStyle::fg_color((200,0,0))))
         }
     }
 }

shell/src/pty.rs

@@ -0,0 +1,74 @@
+
+use {
+    termion::event::{Key, Event},
+    nested::{
+        core::{InnerViewPort},
+        terminal::{TerminalView, TerminalEvent}
+    }
+};
+
+pub use portable_pty::CommandBuilder;
+
+//<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>>
+
+pub struct PTY {
+    master: Box<dyn portable_pty::MasterPty + Send>,
+    child: Box<dyn portable_pty::Child + Send + Sync>
+}
+
+impl PTY {
+    pub fn new(
+        cmd: portable_pty::CommandBuilder,
+        port: InnerViewPort<dyn TerminalView>
+    ) -> Option<Self> {
+
+        // Create a new pty
+        let mut pair = portable_pty::native_pty_system().openpty(portable_pty::PtySize {
+            rows: 25,
+            cols: 80,
+
+            // Not all systems support pixel_width, pixel_height,
+            // but it is good practice to set it to something
+            // that matches the size of the selected font.  That
+            // is more complex than can be shown here in this
+            // brief example though!
+            pixel_width: 0,
+            pixel_height: 0,
+        }).unwrap();
+
+        if let Ok(child) = pair.slave.spawn_command(cmd) {
+            let mut reader = pair.master.try_clone_reader().unwrap();
+
+            async_std::task::spawn_blocking(
+                move || {
+                    nested::terminal::ansi_parser::read_ansi_from(&mut reader, port);
+                });
+            
+            Some(PTY {
+                master: pair.master,
+                child
+            })
+        } else {
+            None
+        }
+    }
+
+    pub fn get_status(&mut self) -> bool {
+        if let Ok(Some(status)) = self.child.try_wait() {
+            true
+        } else {
+            false
+        }
+    }
+
+    pub fn handle_terminal_event(&mut self, event: &TerminalEvent) {
+        match event {
+            TerminalEvent::Input(Event::Key(Key::Char(c))) => {
+                write!(self.master, "{}", c);
+            }
+            _ => {
+            }
+        }
+    }
+}
+