删除历史代码，解决部分问题

src/application/handler/workspace.rs

@@ -4,7 +4,11 @@ use crate::errors::*;
 
 pub fn to_normal_mode(app: &mut Application) -> Result<()> {
     if let ModeData::Workspace(ref mode) = app.mode {
-        app.workspace.select_buffer(mode.prev_buffer_id);
+        if let Some(buffer_id) = mode.prev_buffer_id {
+            app.workspace.select_buffer(buffer_id);
+        } else {
+            return Ok(());
+        }
     }
     app.switch_mode(ModeKey::Normal);
     Ok(())

src/application/mod.rs

@@ -15,9 +15,7 @@ use state::ApplicationStateData;
 use std::{cell::RefCell, collections::HashMap, mem, rc::Rc, sync::Arc};
 
 use crate::{
-    config::appconfig::AppSetting,
     modules::perferences::{Perferences, PerferencesManager},
-    utils::{file::FileManager, ui::uicore::Ui},
     view::monitor::Monitor,
     workspace::Workspace,
 };
@@ -28,9 +26,6 @@ pub mod plugin_interafce;
 pub mod state;
 
 pub struct Application {
-    file_manager: FileManager,
-    bak: bool,
-    ui: Arc<Ui>,
     pub workspace: Workspace,
     pub monitor: Monitor,
     pub perferences: Rc<RefCell<dyn Perferences>>,
@@ -50,19 +45,7 @@ pub struct Application {
 }
 
 impl Application {
-    pub fn new(file_path: Option<String>, setting: AppSetting, args: &[String]) -> Result<Self> {
-        let bak;
-        let mut file = if file_path.is_some() {
-            bak = true;
-            FileManager::new(file_path.unwrap())?
-        } else {
-            bak = false;
-            FileManager::new("held.tmp".to_string())?
-        };
-
-        // 将文件数据读入buf
-        let buf = file.init(bak)?;
-
+    pub fn new(args: &[String]) -> Result<Self> {
         let perferences = PerferencesManager::load()?;
 
         let plugin_system = Rc::new(RefCell::new(PluginSystem::init_system(
@@ -72,10 +55,8 @@ impl Application {
         let input_map = InputLoader::load(perferences.borrow().input_config_path()?)?;
         let mut monitor = Monitor::new(perferences.clone(), plugin_system.clone())?;
         let workspace = Workspace::create_workspace(&mut monitor, perferences.borrow(), args)?;
+
         Ok(Self {
-            file_manager: file,
-            bak,
-            ui: Ui::new(Arc::new(buf), setting),
             workspace,
             monitor,
             perferences,
@@ -90,15 +71,8 @@ impl Application {
     }
 
     fn init(&mut self) -> Result<()> {
-        // Ui::init_ui()?;
-        // PluginSystem::init_system();
-        // self.monitor.terminal.clear().unwrap();
         self.init_modes()?;
         self.plugin_system.borrow().init();
-        // if !self.bak {
-        //     self.ui.start_page_ui()?;
-        // }
-
         Ok(())
     }
 
@@ -122,12 +96,16 @@ impl Application {
         self.mode_history.insert(ModeKey::Delete, ModeData::Delete);
         self.mode_history
             .insert(ModeKey::Search, ModeData::Search(SearchData::new()));
+
+        if self.workspace.current_buffer.is_none() {
+            self.switch_mode(ModeKey::Workspace);
+        }
+
         Ok(())
     }
 
     pub fn run(&mut self) -> Result<()> {
         self.init()?;
-
         loop {
             self.render()?;
             self.listen_event()?;
@@ -137,24 +115,6 @@ impl Application {
                 return Ok(());
             }
         }
-
-        // 主线程
-        match self.ui.ui_loop() {
-            Ok(store) => {
-                if store {
-                    let buffer = &self.ui.core.lock().unwrap().buffer;
-                    self.file_manager.store(buffer)?
-                } else if self.file_manager.is_first_open() {
-                    self.file_manager.delete_files()?;
-                }
-            }
-            Err(_) => {
-                // 补救措施：恢复备份文件
-                todo!()
-            }
-        }
-        disable_raw_mode()?;
-        Ok(())
     }
 
     fn listen_event(&mut self) -> Result<()> {

src/application/mode/delete.rs

@@ -16,7 +16,6 @@ impl ModeRenderer for DeleteRenderer {
         let mut presenter = monitor.build_presenter()?;
 
         if let Some(buffer) = &workspace.current_buffer {
-            warn!("Delete buffer id: {}", buffer.id.unwrap());
             let data = buffer.data();
             presenter.print_buffer(buffer, &data, &workspace.syntax_set, None, None)?;
 

src/application/mode/normal.rs

@@ -16,7 +16,6 @@ impl ModeRenderer for NormalRenderer {
         let mut presenter = monitor.build_presenter()?;
 
         if let Some(buffer) = &workspace.current_buffer {
-            warn!("normal buffer id: {}", buffer.id.unwrap());
             let data = buffer.data();
             presenter.print_buffer(buffer, &data, &workspace.syntax_set, None, None)?;
 

src/application/mode/workspace.rs

@@ -24,7 +24,7 @@ pub struct WorkspaceModeData {
     max_index: usize,
     opened_dir_inos: HashSet<u64>,
     buffer_id: usize,
-    pub prev_buffer_id: usize,
+    pub prev_buffer_id: Option<usize>,
     highlight_ranges: Vec<(Range, CharStyle, Colors)>,
 }
 
@@ -37,19 +37,23 @@ impl WorkspaceModeData {
         let mut opened_dir_inos = HashSet::new();
         opened_dir_inos.insert(workspace.path.metadata()?.ino());
 
-        let prev_buffer_id = workspace.current_buffer.as_ref().unwrap().id()?;
-
+        let mut prev_buffer_id = None;
+        if let Some(current_buffer) = workspace.current_buffer.as_ref() {
+            prev_buffer_id = Some(current_buffer.id()?);
+        }
         let buffer = Buffer::new();
         let buffer_id = workspace.add_buffer(buffer);
-        monitor.init_buffer(workspace.current_buffer.as_mut().unwrap())?;
+        monitor.init_buffer(workspace.get_buffer_mut(buffer_id).unwrap())?;
 
-        workspace.select_buffer(prev_buffer_id);
+        if let Some(id) = prev_buffer_id {
+            workspace.select_buffer(id);
+        }
 
         Ok(WorkspaceModeData {
             path: workspace.path.clone(),
             selected_index: 0,
             opened_dir_inos,
-            buffer_id: buffer_id,
+            buffer_id,
             prev_buffer_id,
             highlight_ranges: Vec::new(),
             current_render_index: 0,
@@ -276,10 +280,9 @@ impl WorkspaceModeData {
             Ok(false)
         } else {
             let buffer = Buffer::from_file(&self.selected_path)?;
-            let id = workspace.add_buffer(buffer);
-            workspace.select_buffer(id);
+            let id = workspace.add_buffer_with_select(buffer);
             monitor.init_buffer(workspace.current_buffer.as_mut().unwrap())?;
-            self.prev_buffer_id = id;
+            self.prev_buffer_id = Some(id);
             Ok(true)
         }
     }