draft history navigation

src/browser/main/tab/page.rs

@@ -89,10 +89,13 @@ impl Page {
                     .get::<String>()
                     .expect("Parameter does not match `String`");
 
+                let request = GString::from(uri);
+
                 navigation.set_request_text(
-                    &GString::from(uri),
-                    true, // activate (page reload)
+                    &request, true, // activate (page reload)
                 );
+
+                navigation.add_history(request);
             }
         });
 

src/browser/main/tab/page/navigation.rs

@@ -85,6 +85,10 @@ impl Navigation {
         self.request.widget().grab_focus();
     }
 
+    pub fn add_history(&self, request: GString) {
+        self.history.add(request, true);
+    }
+
     pub fn update(&self, progress_fraction: Option<f64>) {
         self.base.update(self.request.uri());
         self.history.update();

src/browser/main/tab/page/navigation/history.rs

@@ -17,8 +17,8 @@ pub struct History {
     back: Back,
     forward: Forward,
     // Extras
-    memory: Vec<Memory>,
-    index: RefCell<i32>,
+    memory: RefCell<Vec<Memory>>,
+    index: RefCell<Option<usize>>,
     // GTK
     widget: Box,
 }
@@ -45,10 +45,10 @@ impl History {
         widget.append(forward.widget());
 
         // Init memory
-        let memory = Vec::new();
+        let memory = RefCell::new(Vec::new());
 
         // Init index
-        let index = RefCell::new(-1);
+        let index = RefCell::new(None);
 
         Self {
             // Actions
@@ -63,9 +63,55 @@ impl History {
     }
 
     // Actions
+    pub fn add(&self, request: GString, follow_to_index: bool) {
+        // Append new Memory record
+        self.memory.borrow_mut().push(Memory { request, time: 0 });
+
+        if follow_to_index {
+            // Navigate to the last record appended
+            self.index.replace(Some(self.memory.borrow().len()));
+        }
+    }
+
+    pub fn try_back(&self, follow_to_index: bool) -> Option<GString> {
+        if let Some(index) = self.index.take() {
+            if let Some(memory) = self.memory.borrow().get(index - 1) {
+                if follow_to_index {
+                    self.index.replace(Some(index - 1));
+                }
+                return Some(memory.request.clone());
+            }
+        }
+        None
+    }
+
+    /* @TODO
+    pub fn try_current(&self) -> bool {
+        true
+    } */
+
+    pub fn try_forward(&self, follow_to_index: bool) -> Option<GString> {
+        if let Some(index) = self.index.take() {
+            if let Some(memory) = self.memory.borrow().get(index + 1) {
+                if follow_to_index {
+                    self.index.replace(Some(index + 1));
+                }
+                return Some(memory.request.clone());
+            }
+        }
+        None
+    }
+
     pub fn update(&self) {
-        self.back.update();
-        self.forward.update();
+        match self.try_back(false) {
+            Some(_) => self.back.update(true),
+            None => self.back.update(false),
+        };
+
+        match self.try_forward(false) {
+            Some(_) => self.forward.update(true),
+            None => self.forward.update(false),
+        };
     }
 
     // Getters

src/browser/main/tab/page/navigation/history/back.rs

@@ -1,6 +1,6 @@
 use gtk::{
     gio::SimpleAction,
-    prelude::{ActionExt, ButtonExt},
+    prelude::{ActionExt, ButtonExt, WidgetExt},
     Button,
 };
 use std::sync::Arc;
@@ -37,8 +37,10 @@ impl Back {
     }
 
     // Actions
-    pub fn update(&self) {
-        // @TODO
+    pub fn update(&self, status: bool) {
+        self.action_tab_page_navigation_history_back
+            .set_enabled(status);
+        self.widget.set_sensitive(status);
     }
 
     // Getters

src/browser/main/tab/page/navigation/history/forward.rs

@@ -1,5 +1,5 @@
 use gtk::{
-    prelude::{ActionExt, ButtonExt},
+    prelude::{ActionExt, ButtonExt, WidgetExt},
     {gio::SimpleAction, Button},
 };
 use std::sync::Arc;
@@ -36,8 +36,10 @@ impl Forward {
     }
 
     // Actions
-    pub fn update(&self) {
-        // @TODO
+    pub fn update(&self, status: bool) {
+        self.action_tab_page_navigation_history_forward
+            .set_enabled(status);
+        self.widget.set_sensitive(status);
     }
 
     // Getters