Merge branch 'main' of https://github.com/zellij-org/zellij into tab-layout

13 files changed, 199 insertions, 92 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index ad53c6c99..97f68875b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 * Add displaying of the `session-name` to the `tab-bar` (https://github.com/zellij-org/zellij/pull/608)
 * Add command to dump `layouts` to stdout (https://github.com/zellij-org/zellij/pull/623)
   * `zellij setup --dump-layout [LAYOUT]` [default, strider, disable-status]
+* Add `action`: `ScrollToBottom` (https://github.com/zellij-org/zellij/pull/626)
+  * Bound by default to `^c` in `scroll` mode, scrolls to bottom and exists the scroll mode
+* Simplify deserialization slightly (https://github.com/zellij-org/zellij/pull/633)
+* Fix update plugin attributes on inactive tab (https://github.com/zellij-org/zellij/pull/634)
 
 ## [0.15.0] - 2021-07-19
 * Kill children properly (https://github.com/zellij-org/zellij/pull/601)
diff --git a/GOVERNANCE.md b/GOVERNANCE.md
index b405d29db..698630697 100644
--- a/GOVERNANCE.md
+++ b/GOVERNANCE.md
@@ -29,3 +29,4 @@ Once the organization reaches 10 members, a reasonable and achievable process mu
 * Roee Shapira <ro33.sha@gmail.com>
 * Alex Kenji Berthold <aks.kenji@protonmail.com>
 * Kyle Sutherland-Cash <kyle.sutherlandcash@gmail.com>
+* Dante Pippi <dante.dpf@gmail.com>
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index 76a44d750..f0d00f77a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -5,16 +5,14 @@ mod tests;
 
 use crate::install::populate_data_dir;
 use sessions::{assert_session, assert_session_ne, get_active_session, list_sessions};
-use std::convert::TryFrom;
 use std::process;
 use zellij_client::{os_input_output::get_client_os_input, start_client, ClientInfo};
 use zellij_server::{os_input_output::get_server_os_input, start_server};
 use zellij_utils::{
     cli::{CliArgs, Command, Sessions},
     consts::{ZELLIJ_TMP_DIR, ZELLIJ_TMP_LOG_DIR},
-    input::{config::Config, layout::Layout, options::Options},
     logging::*,
-    setup::{find_default_config_dir, get_default_data_dir, get_layout_dir, Setup},
+    setup::{get_default_data_dir, Setup},
     structopt::StructOpt,
 };
 
@@ -26,25 +24,6 @@ pub fn main() {
         list_sessions();
     }
 
-    let config = match Config::try_from(&opts) {
-        Ok(config) => config,
-        Err(e) => {
-            eprintln!("There was an error in the config file:\n{}", e);
-            process::exit(1);
-        }
-    };
-    let config_options = Options::from_cli(&config.options, opts.command.clone());
-
-    if let Some(Command::Setup(ref setup)) = opts.command {
-        Setup::from_cli(setup, &opts, &config_options).map_or_else(
-            |e| {
-                eprintln!("{:?}", e);
-                process::exit(1);
-            },
-            |_| {},
-        );
-    };
-
     atomic_create_dir(&*ZELLIJ_TMP_DIR).unwrap();
     atomic_create_dir(&*ZELLIJ_TMP_LOG_DIR).unwrap();
     if let Some(path) = opts.server {
@@ -75,6 +54,14 @@ pub fn main() {
                 session_name = Some(get_active_session());
             }
 
+            let (config, _, config_options) = match Setup::from_options(&opts) {
+                Ok(results) => results,
+                Err(e) => {
+                    eprintln!("{}", e);
+                    process::exit(1);
+                }
+            };
+
             start_client(
                 Box::new(os_input),
                 opts,
@@ -83,6 +70,14 @@ pub fn main() {
                 None,
             );
         } else {
+            let (config, layout, _) = match Setup::from_options(&opts) {
+                Ok(results) => results,
+                Err(e) => {
+                    eprintln!("{}", e);
+                    process::exit(1);
+                }
+            };
+
             let session_name = opts
                 .session
                 .clone()
@@ -94,16 +89,6 @@ pub fn main() {
             #[cfg(not(disable_automatic_asset_installation))]
             populate_data_dir(&data_dir);
 
-            let layout_dir = config_options.layout_dir.or_else(|| {
-                get_layout_dir(opts.config_dir.clone().or_else(find_default_config_dir))
-            });
-            let layout = Layout::from_path_or_default(
-                opts.layout.as_ref(),
-                opts.layout_path.as_ref(),
-                layout_dir,
-            )
-            .map(|layout| layout.construct_main_layout());
-
             start_client(
                 Box::new(os_input),
                 opts,
diff --git a/zellij-server/src/route.rs b/zellij-server/src/route.rs
index 47eeabad1..7dbf09a7f 100644
--- a/zellij-server/src/route.rs
+++ b/zellij-server/src/route.rs
@@ -127,6 +127,12 @@ fn route_action(
                 .send_to_screen(ScreenInstruction::ScrollDownAt(point))
                 .unwrap();
         }
+        Action::ScrollToBottom => {
+            session
+                .senders
+                .send_to_screen(ScreenInstruction::ScrollToBottom)
+                .unwrap();
+        }
         Action::PageScrollUp => {
             session
                 .senders
diff --git a/zellij-server/src/screen.rs b/zellij-server/src/screen.rs
index 86ecd6888..b348540fb 100644
--- a/zellij-server/src/screen.rs
+++ b/zellij-server/src/screen.rs
@@ -50,15 +50,16 @@ pub(crate) enum ScreenInstruction {
     ScrollUpAt(Position),
     ScrollDown,
     ScrollDownAt(Position),
+    ScrollToBottom,
     PageScrollUp,
     PageScrollDown,
     ClearScroll,
     CloseFocusedPane,
     ToggleActiveTerminalFullscreen,
-    SetSelectable(PaneId, bool),
-    SetFixedHeight(PaneId, usize),
-    SetFixedWidth(PaneId, usize),
-    SetInvisibleBorders(PaneId, bool),
+    SetSelectable(PaneId, bool, usize),
+    SetFixedHeight(PaneId, usize, usize),
+    SetFixedWidth(PaneId, usize, usize),
+    SetInvisibleBorders(PaneId, bool, usize),
     ClosePane(PaneId),
     ApplyLayout(Layout, Vec<RawFd>),
     NewTab(RawFd),
@@ -103,6 +104,7 @@ impl From<&ScreenInstruction> for ScreenContext {
             ScreenInstruction::Exit => ScreenContext::Exit,
             ScreenInstruction::ScrollUp => ScreenContext::ScrollUp,
             ScreenInstruction::ScrollDown => ScreenContext::ScrollDown,
+            ScreenInstruction::ScrollToBottom => ScreenContext::ScrollToBottom,
             ScreenInstruction::PageScrollUp => ScreenContext::PageScrollUp,
             ScreenInstruction::PageScrollDown => ScreenContext::PageScrollDown,
             ScreenInstruction::ClearScroll => ScreenContext::ClearScroll,
@@ -335,6 +337,11 @@ impl Screen {
         }
     }
 
+    /// Returns a mutable reference to this [`Screen`]'s indexed [`Tab`].
+    pub fn get_indexed_tab_mut(&mut self, tab_index: usize) -> Option<&mut Tab> {
+        self.get_tabs_mut().get_mut(&tab_index)
+    }
+
     /// Creates a new [`Tab`] in this [`Screen`], applying the specified [`Layout`]
     /// and switching to it.
     pub fn apply_layout(&mut self, layout: Layout, new_pids: Vec<RawFd>) {
@@ -353,7 +360,7 @@ impl Screen {
             self.colors,
             self.session_state.clone(),
         );
-        tab.apply_layout(layout, new_pids);
+        tab.apply_layout(layout, new_pids, tab_index);
         self.active_tab_index = Some(tab_index);
         self.tabs.insert(tab_index, tab);
         self.update_tabs();
@@ -569,6 +576,12 @@ pub(crate) fn screen_thread_main(
                     .unwrap()
                     .scroll_terminal_down(&point, 3);
             }
+            ScreenInstruction::ScrollToBottom => {
+                screen
+                    .get_active_tab_mut()
+                    .unwrap()
+                    .scroll_active_terminal_to_bottom();
+            }
             ScreenInstruction::PageScrollUp => {
                 screen
                     .get_active_tab_mut()
@@ -591,29 +604,53 @@ pub(crate) fn screen_thread_main(
                 screen.get_active_tab_mut().unwrap().close_focused_pane();
                 screen.render();
             }
-            ScreenInstruction::SetSelectable(id, selectable) => {
-                screen
-                    .get_active_tab_mut()
-                    .unwrap()
-                    .set_pane_selectable(id, selectable);
-            }
-            ScreenInstruction::SetFixedHeight(id, fixed_height) => {
-                screen
-                    .get_active_tab_mut()
-                    .unwrap()
-                    .set_pane_fixed_height(id, fixed_height);
-            }
-            ScreenInstruction::SetFixedWidth(id, fixed_width) => {
-                screen
-                    .get_active_tab_mut()
-                    .unwrap()
-                    .set_pane_fixed_width(id, fixed_width);
-            }
-            ScreenInstruction::SetInvisibleBorders(id, invisible_borders) => {
-                screen
-                    .get_active_tab_mut()
-                    .unwrap()
-                    .set_pane_invisible_borders(id, invisible_borders);
+            ScreenInstruction::SetSelectable(id, selectable, tab_index) => {
+                screen.get_indexed_tab_mut(tab_index).map_or_else(
+                    || {
+                        log::warn!(
+                            "Tab index #{} not found, could not set selectable for plugin #{:?}.",
+                            tab_index,
+                            id
+                        )
+                    },
+                    |tab| tab.set_pane_selectable(id, selectable),
+                );
+            }
+            ScreenInstruction::SetFixedHeight(id, fixed_height, tab_index) => {
+                screen.get_indexed_tab_mut(tab_index).map_or_else(
+                    || {
+                        log::warn!(
+                            "Tab index #{} not found, could not set fixed height for plugin #{:?}.",
+                            tab_index,
+                            id
+                        )
+                    },
+                    |tab| tab.set_pane_fixed_height(id, fixed_height),
+                );
+            }
+            ScreenInstruction::SetFixedWidth(id, fixed_width, tab_index) => {
+                screen.get_indexed_tab_mut(tab_index).map_or_else(
+                    || {
+                        log::warn!(
+                            "Tab index #{} not found, could not set fixed width for plugin #{:?}.",
+                            tab_index,
+                            id
+                        )
+                    },
+                    |tab| tab.set_pane_fixed_width(id, fixed_width),
+                );
+            }
+            ScreenInstruction::SetInvisibleBorders(id, invisible_borders, tab_index) => {
+                screen.get_indexed_tab_mut(tab_index).map_or_else(
+                    || {
+                        log::warn!(
+                            r#"Tab index #{} not found, could not set invisible borders for plugin #{:?}."#,
+                            tab_index,
+                            id
+                        )
+                    },
+                    |tab| tab.set_pane_invisible_borders(id, invisible_borders),
+                );
                 screen.render();
             }
             ScreenInstruction::ClosePane(id) => {
diff --git a/zellij-server/src/tab.rs b/zellij-server/src/tab.rs
index f3b30fe3a..0662be225 100644
--- a/zellij-server/src/tab.rs
+++ b/zellij-server/src/tab.rs
@@ -301,7 +301,7 @@ impl Tab {
         }
     }
 
-    pub fn apply_layout(&mut self, layout: Layout, new_pids: Vec<RawFd>) {
+    pub fn apply_layout(&mut self, layout: Layout, new_pids: Vec<RawFd>, tab_index: usize) {
         // TODO: this should be an attribute on Screen instead of full_screen_ws
         let free_space = PositionAndSize {
             x: 0,
@@ -340,7 +340,7 @@ impl Tab {
             if let Some(Run::Plugin(Some(plugin))) = &layout.run {
                 let (pid_tx, pid_rx) = channel();
                 self.senders
-                    .send_to_plugin(PluginInstruction::Load(pid_tx, plugin.clone()))
+                    .send_to_plugin(PluginInstruction::Load(pid_tx, plugin.clone(), tab_index))
                     .unwrap();
                 let pid = pid_rx.recv().unwrap();
                 let new_plugin = PluginPane::new(
@@ -2280,6 +2280,16 @@ impl Tab {
             self.render();
         }
     }
+    pub fn scroll_active_terminal_to_bottom(&mut self) {
+        if let Some(active_terminal_id) = self.get_active_terminal_id() {
+            let active_terminal = self
+                .panes
+                .get_mut(&PaneId::Terminal(active_terminal_id))
+                .unwrap();
+            active_terminal.clear_scroll();
+            self.render();
+        }
+    }
     pub fn clear_active_terminal_scroll(&mut self) {
         if let Some(active_terminal_id) = self.get_active_terminal_id() {
             let active_terminal = self
diff --git a/zellij-server/src/wasm_vm.rs b/zellij-server/src/wasm_vm.rs
index f3e4a115b..41a468ee2 100644
--- a/zellij-server/src/wasm_vm.rs
+++ b/zellij-server/src/wasm_vm.rs
@@ -28,8 +28,8 @@ use zellij_utils::{input::command::TerminalAction, serde, zellij_tile};
 
 #[derive(Clone, Debug)]
 pub(crate) enum PluginInstruction {
-    Load(Sender<u32>, PathBuf),
-    Update(Option<u32>, Event), // Focused plugin / broadcast, event data
+    Load(Sender<u32>, PathBuf, usize), // tx_pid, path_of_plugin , tab_index
+    Update(Option<u32>, Event),        // Focused plugin / broadcast, event data
     Render(Sender<String>, u32, usize, usize), // String buffer, plugin id, rows, cols
     Unload(u32),
     Exit,
@@ -50,6 +50,7 @@ impl From<&PluginInstruction> for PluginContext {
 #[derive(WasmerEnv, Clone)]
 pub(crate) struct PluginEnv {
     pub plugin_id: u32,
+    pub tab_index: usize,
     pub senders: ThreadSenders,
     pub wasi_env: WasiEnv,
     pub subscriptions: Arc<Mutex<HashSet<EventType>>>,
@@ -64,7 +65,7 @@ pub(crate) fn wasm_thread_main(bus: Bus<PluginInstruction>, store: Store, data_d
         let (event, mut err_ctx) = bus.recv().expect("failed to receive event on channel");
         err_ctx.add_call(ContextType::Plugin((&event).into()));
         match event {
-            PluginInstruction::Load(pid_tx, path) => {
+            PluginInstruction::Load(pid_tx, path, tab_index) => {
                 let plugin_dir = data_dir.join("plugins/");
                 let wasm_bytes = fs::read(&path)
                     .or_else(|_| fs::read(&path.with_extension("wasm")))
@@ -100,6 +101,7 @@ pub(crate) fn wasm_thread_main(bus: Bus<PluginInstruction>, store: Store, data_d
 
                 let plugin_env = PluginEnv {
                     plugin_id,
+                    tab_index,
                     senders: bus.senders.clone(),
                     wasi_env,
                     subscriptions: Arc::new(Mutex::new(HashSet::new())),
@@ -193,6 +195,7 @@ fn host_set_selectable(plugin_env: &PluginEnv, selectable: i32) {
         .send_to_screen(ScreenInstruction::SetSelectable(
             PaneId::Plugin(plugin_env.plugin_id),
             selectable,
+            plugin_env.tab_index,
         ))
         .unwrap()
 }
@@ -204,6 +207,7 @@ fn host_set_fixed_height(plugin_env: &PluginEnv, fixed_height: i32) {
         .send_to_screen(ScreenInstruction::SetFixedHeight(
             PaneId::Plugin(plugin_env.plugin_id),
             fixed_height,
+            plugin_env.tab_index,
         ))
         .unwrap()
 }
@@ -215,6 +219,7 @@ fn host_set_fixed_width(plugin_env: &PluginEnv, fixed_width: i32) {
         .send_to_screen(ScreenInstruction::SetFixedWidth(
             PaneId::Plugin(plugin_env.plugin_id),
             fixed_width,
+            plugin_env.tab_index,
         ))
         .unwrap()
 }
@@ -226,6 +231,7 @@ fn host_set_invisible_borders(plugin_env: &PluginEnv, invisible_borders: i32) {
         .send_to_screen(ScreenInstruction::SetInvisibleBorders(
             PaneId::Plugin(plugin_env.plugin_id),
             invisible_borders,
+            plugin_env.tab_index,
         ))
         .unwrap()
 }
diff --git a/zellij-utils/assets/config/default.yaml b/zellij-utils/assets/config/default.yaml
index e90b60a18..13c8efcae 100644
--- a/zellij-utils/assets/config/default.yaml
+++ b/zellij-utils/assets/config/default.yaml
@@ -178,6 +178,8 @@ keybinds:
           key: [Ctrl: 'p',]
         - action: [SwitchToMode: Session,]
           key: [Ctrl: 'o',]
+        - action: [ScrollToBottom, SwitchToMode: Normal,]
+          key: [Ctrl: 'c',]
         - action: [Quit,]
           key: [Ctrl: 'q',]
         - action: [ScrollDown,]
diff --git a/zellij-utils/src/errors.rs b/zellij-utils/src/errors.rs
index b32dd337d..6a053038a 100644
--- a/zellij-utils/src/errors.rs
+++ b/zellij-utils/src/errors.rs
@@ -202,6 +202,7 @@ pub enum ScreenContext {
     ScrollUpAt,
     ScrollDown,
     ScrollDownAt,
+    ScrollToBottom,
     PageScrollUp,
     PageScrollDown,
     ClearScroll,
diff --git a/zellij-utils/src/input/actions.rs b/zellij-utils/src/input/actions.rs
index ab711c75c..dbced56df 100644
--- a/zellij-utils/src/input/actions.rs
+++ b/zellij-utils/src/input/actions.rs
@@ -49,6 +49,8 @@ pub enum Action {
     ScrollDown,
     /// Scroll down at point
     ScrollDownAt(Position),
+    /// Scroll down to bottom in focus pane.
+    ScrollToBottom,
     /// Scroll up one page in focus pane.
     PageScrollUp,
     /// Scroll down one page in focus pane.
diff --git a/zellij-utils/src/input/layout.rs b/zellij-utils/src/input/layout.rs
index 26d967646..887350fb0 100644
--- a/zellij-utils/src/input/layout.rs
+++ b/zellij-utils/src/input/layout.rs
@@ -123,8 +123,8 @@ impl Layout {
         layout: Option<&PathBuf>,
         layout_path: Option<&PathBuf>,
         layout_dir: Option<PathBuf>,
-    ) -> Option<Layout> {
-        let layout_result = layout
+    ) -> Option<Result<Layout, ConfigError>> {
+        layout
             .map(|p| Layout::from_dir(p, layout_dir.as_ref()))
             .or_else(|| layout_path.map(|p| Layout::new(p)))
             .or_else(|| {
@@ -132,16 +132,7 @@ impl Layout {
                     &std::path::PathBuf::from("default"),
                     layout_dir.as_ref(),
                 ))
-            });
-
-        match layout_result {
-            None => None,
-            Some(Ok(layout)) => Some(layout),
-            Some(Err(e)) => {
-                eprintln!("There was an error in the layout file:\n{}", e);
-                std::process::exit(1);
-            }
-        }
+            })
     }
 
     // Currently still needed but on nightly
@@ -297,12 +288,9 @@ impl Layout {
     pub fn construct_main_layout(&self) -> MainLayout {
         let (pre_tab, post_tab, tabs) = self.split_main_and_tab_layout();
 
+        // Todo: A proper LayoutError
         if tabs.is_empty() {
-            panic!("The layout file should have a `tabs` section specified");
-        }
-
-        if tabs.len() > 1 {
-            panic!("The layout file should have one single tab in the `tabs` section specified");
+            panic!("The layout file should have a [`tabs`] section specified");
         }
 
         MainLayout {
diff --git a/zellij-utils/src/input/unit/layout_test.rs b/zellij-utils/src/input/unit/layout_test.rs
index 89217e04e..5d9fda35a 100644
--- a/zellij-utils/src/input/unit/layout_test.rs
+++ b/zellij-utils/src/input/unit/layout_test.rs
@@ -528,10 +528,7 @@ fn no_tabs_specified_should_panic() {
 }
 
 #[test]
-#[should_panic]
-// TODO Make error out of this
-// Only untill #631 is fixed
-fn multiple_tabs_specified_should_panic() {
+fn multiple_tabs_specified_should_not_panic() {
     let path = layout_test_dir("multiple-tabs-should-panic.yaml".into());
     let layout = Layout::new(&path);
     let _main_layout = layout.unwrap().construct_main_layout();
diff --git a/zellij-utils/src/setup.rs b/zellij-utils/src/setup.rs
index aa0bb642b..e00eb7aea 100644
--- a/zellij-utils/src/setup.rs
+++ b/zellij-utils/src/setup.rs
@@ -1,11 +1,18 @@
-use crate::cli::CliArgs;
-use crate::consts::{
-    FEATURES, SYSTEM_DEFAULT_CONFIG_DIR, SYSTEM_DEFAULT_DATA_DIR_PREFIX, VERSION, ZELLIJ_PROJ_DIR,
+use crate::{
+    cli::{CliArgs, Command},
+    consts::{
+        FEATURES, SYSTEM_DEFAULT_CONFIG_DIR, SYSTEM_DEFAULT_DATA_DIR_PREFIX, VERSION,
+        ZELLIJ_PROJ_DIR,
+    },
+    input::{
+        config::{Config, ConfigError},
+        layout::{Layout, MainLayout},
+        options::Options,
+    },
 };
-use crate::input::options::Options;
 use directories_next::BaseDirs;
 use serde::{Deserialize, Serialize};
-use std::{io::Write, path::Path, path::PathBuf};
+use std::{convert::TryFrom, io::Write, path::Path, path::PathBuf, process};
 use structopt::StructOpt;
 
 const CONFIG_LOCATION: &str = ".config/zellij";
@@ -139,6 +146,68 @@ pub struct Setup {
 
 impl Setup {
     /// Entrypoint from main
+    /// Merges options from the config file and the command line options
+    /// into `[Options]`, the command line options superceding the config
+    /// file options:
+    /// 1. command line options (`zellij options`)
+    /// 2. config options (`config.yaml`)
+    pub fn from_options(
+        opts: &CliArgs,
+    ) -> Result<(Config, Option<MainLayout>, Options), ConfigError> {
+        let clean = match &opts.command {
+            Some(Command::Setup(ref setup)) => setup.clean,
+            _ => false,
+        };
+
+        log::info!("{:?}", clean);
+
+        let config = if !clean {
+            match Config::try_from(opts) {
+                Ok(config) => config,
+                Err(e) => {
+                    eprintln!("There was an error in the config file:");
+                    return Err(e);
+                }
+            }
+        } else {
+            Config::default()
+        };
+
+        let config_options = Options::from_cli(&config.options, opts.command.clone());
+
+        let layout_dir = config_options
+            .layout_dir
+            .clone()
+            .or_else(|| get_layout_dir(opts.config_dir.clone().or_else(find_default_config_dir)));
+        let layout_result = Layout::from_path_or_default(
+            opts.layout.as_ref(),
+            opts.layout_path.as_ref(),
+            layout_dir,
+        );
+        let layout = match layout_result {
+            None => None,
+            Some(Ok(layout)) => Some(layout),
+            Some(Err(e)) => {
+                eprintln!("There was an error in the layout file:");
+                return Err(e);
+            }
+        }
+        .map(|layout| layout.construct_main_layout());
+
+        if let Some(Command::Setup(ref setup)) = &opts.command {
+            setup.from_cli(opts, &config_options).map_or_else(
+                |e| {
+                    eprintln!("{:?}", e);
+                    process::exit(1);
+                },
+                |_| {},
+            );
+        };
+
+        Ok((config, layout, config_options))
+    }
+
+    /// General setup helpers
     pub fn from_cli(&self, opts: &CliArgs, config_options: &Options) -> std::io::Result<()> {
         if self.clean {
             return Ok(());