move migration api out of struct implementation

src/app/browser/window/tab/item/page/meta.rs

@@ -178,18 +178,18 @@ impl Meta {
 
         Ok(())
     }
-
-    // Tools
-    pub fn migrate(tx: &Transaction) -> Result<(), String> {
-        // Migrate self components
-        if let Err(e) = Database::init(&tx) {
-            return Err(e.to_string());
-        }
-
-        // Delegate migration to childs
-        // nothing yet..
-
-        // Success
-        Ok(())
-    }
+}
+
+// Tools
+pub fn migrate(tx: &Transaction) -> Result<(), String> {
+    // Migrate self components
+    if let Err(e) = Database::init(&tx) {
+        return Err(e.to_string());
+    }
+
+    // Delegate migration to childs
+    // nothing yet..
+
+    // Success
+    Ok(())
 }

src/app/browser/window/tab/item/page/navigation.rs

@@ -168,18 +168,18 @@ impl Navigation {
     pub fn request_text(&self) -> GString {
         self.request.text()
     }
-
-    // Tools
-    pub fn migrate(tx: &Transaction) -> Result<(), String> {
-        // Migrate self components
-        if let Err(e) = Database::init(&tx) {
-            return Err(e.to_string());
-        }
-
-        // Delegate migration to childs
-        Request::migrate(tx)?;
-
-        // Success
-        Ok(())
-    }
+}
+
+// Tools
+pub fn migrate(tx: &Transaction) -> Result<(), String> {
+    // Migrate self components
+    if let Err(e) = Database::init(&tx) {
+        return Err(e.to_string());
+    }
+
+    // Delegate migration to childs
+    request::migrate(tx)?;
+
+    // Success
+    Ok(())
 }

src/app/browser/window/tab/item/page/navigation/request.rs

@@ -117,18 +117,18 @@ impl Request {
             _ => None,
         }
     }
-
-    // Tools
-    pub fn migrate(tx: &Transaction) -> Result<(), String> {
-        // Migrate self components
-        if let Err(e) = Database::init(tx) {
-            return Err(e.to_string());
-        }
-
-        // Delegate migration to childs
-        Widget::migrate(tx)?;
-
-        // Success
-        Ok(())
-    }
+}
+
+// Tools
+pub fn migrate(tx: &Transaction) -> Result<(), String> {
+    // Migrate self components
+    if let Err(e) = Database::init(tx) {
+        return Err(e.to_string());
+    }
+
+    // Delegate migration to childs
+    widget::migrate(tx)?;
+
+    // Success
+    Ok(())
 }

src/app/browser/window/tab/item/page/navigation/request/widget.rs

@@ -221,18 +221,18 @@ impl Widget {
     pub fn text(&self) -> GString {
         self.gobject.text()
     }
-
-    // Tools
-    pub fn migrate(tx: &Transaction) -> Result<(), String> {
-        // Migrate self components
-        if let Err(e) = Database::init(&tx) {
-            return Err(e.to_string());
-        }
-
-        // Delegate migration to childs
-        // nothing yet..
-
-        // Success
-        Ok(())
-    }
+}
+
+// Tools
+pub fn migrate(tx: &Transaction) -> Result<(), String> {
+    // Migrate self components
+    if let Err(e) = Database::init(&tx) {
+        return Err(e.to_string());
+    }
+
+    // Delegate migration to childs
+    // nothing yet..
+
+    // Success
+    Ok(())
 }