Use Default trait were possible

src/plug_manager/manager.rs

@@ -16,7 +16,7 @@ impl Manager {
         let (plug_manage_state, store) = if Store::is_config_exists() {
             (PlugManageState::NvimGtk, Store::load())
         } else {
-            (PlugManageState::Unknown, Store::empty())
+            (PlugManageState::Unknown, Default::default())
         };
 
         Manager {
@@ -45,14 +45,14 @@ impl Manager {
                     self.store = Store::load_from_plug(&self.vim_plug);
                     self.plug_manage_state = PlugManageState::VimPlug;
                 } else {
-                    self.store = Store::empty();
+                    self.store = Default::default();
                 }
             }
             PlugManageState::NvimGtk => {
                 if Store::is_config_exists() {
                     self.store = Store::load();
                 } else {
-                    self.store = Store::empty();
+                    self.store = Default::default();
                 }
             }
             PlugManageState::VimPlug => {
@@ -60,7 +60,7 @@ impl Manager {
                     self.store = Store::load();
                     self.plug_manage_state = PlugManageState::NvimGtk;
                 } else {
-                    self.store = Store::empty();
+                    self.store = Default::default();
                 }
             }
         }

src/plug_manager/store.rs

@@ -3,6 +3,7 @@ use toml;
 use settings::SettingsLoader;
 use super::vim_plug;
 
+#[derive(Default)]
 pub struct Store {
     settings: Settings,
 }
@@ -20,15 +21,11 @@ impl Store {
         Store { settings: Settings::load() }
     }
 
-    pub fn empty() -> Self {
-        Store { settings: Settings::empty() }
-    }
-
     pub fn load_from_plug(vim_plug: &vim_plug::Manager) -> Self {
         let settings = match vim_plug.get_plugs() {
             Err(msg) => {
                 error!("{}", msg);
-                Settings::empty()
+                Default::default()
             }
             Ok(plugs) => {
                 let plugs = plugs
@@ -106,15 +103,17 @@ impl Settings {
     }
 }
 
-impl SettingsLoader for Settings {
-    const SETTINGS_FILE: &'static str = "plugs.toml";
-
-    fn empty() -> Self {
+impl Default for Settings {
+    fn default() -> Self {
         Settings {
             plugs: vec![],
             enabled: false,
         }
     }
+}
+
+impl SettingsLoader for Settings {
+    const SETTINGS_FILE: &'static str = "plugs.toml";
 
     fn from_str(s: &str) -> Result<Self, String> {
         toml::from_str(&s).map_err(|e| format!("{}", e))

src/project.rs

@@ -580,7 +580,7 @@ impl Entry {
 use settings::SettingsLoader;
 use toml;
 
-#[derive(Serialize, Deserialize)]
+#[derive(Serialize, Deserialize, Default)]
 struct ProjectSettings {
     projects: Vec<ProjectEntrySettings>,
 }
@@ -607,10 +607,6 @@ impl ProjectEntrySettings {
 impl SettingsLoader for ProjectSettings {
     const SETTINGS_FILE: &'static str = "projects.toml";
 
-    fn empty() -> ProjectSettings {
-        ProjectSettings { projects: vec![] }
-    }
-
     fn from_str(s: &str) -> Result<Self, String> {
         toml::from_str(&s).map_err(|e| format!("{}", e))
     }

src/settings.rs

@@ -111,11 +111,9 @@ use serde;
 
 use dirs;
 
-pub trait SettingsLoader: Sized + serde::Serialize {
+pub trait SettingsLoader: Sized + serde::Serialize + Default {
     const SETTINGS_FILE: &'static str;
 
-    fn empty() -> Self;
-
     fn from_str(s: &str) -> Result<Self, String>;
 
     fn load() -> Self {
@@ -123,7 +121,7 @@ pub trait SettingsLoader: Sized + serde::Serialize {
             Ok(settings) => settings,
             Err(e) => {
                 error!("{}", e);
-                Self::empty()
+                Default::default()
             }
         }
     }
@@ -154,7 +152,7 @@ fn load_from_file<T: SettingsLoader>(path: &Path) -> Result<T, String> {
         )?;
         T::from_str(&contents)
     } else {
-        Ok(T::empty())
+        Ok(Default::default())
     }
 }
 

src/ui.rs

@@ -445,8 +445,8 @@ struct WindowState {
     sidebar_width: i32,
 }
 
-impl WindowState {
-    pub fn new() -> Self {
+impl Default for WindowState {
+    fn default() -> Self {
         WindowState {
             current_width: DEFAULT_WIDTH,
             current_height: DEFAULT_HEIGHT,
@@ -460,10 +460,6 @@ impl WindowState {
 impl SettingsLoader for WindowState {
     const SETTINGS_FILE: &'static str = "window.toml";
 
-    fn empty() -> WindowState {
-        WindowState::new()
-    }
-
     fn from_str(s: &str) -> Result<Self, String> {
         toml::from_str(&s).map_err(|e| format!("{}", e))
     }