implement proxy settings dialog (rules tab)

src/app/browser.rs

@@ -1,16 +1,18 @@
 mod about;
 mod action;
 mod database;
+mod proxy;
 mod widget;
 pub mod window;
 
 use about::About;
 use action::Action;
+use proxy::Proxy;
 use widget::Widget;
 use window::Window;
 
 use crate::Profile;
-use adw::{AboutDialog, Application, prelude::AdwDialogExt};
+use adw::{AboutDialog, Application, PreferencesDialog, prelude::AdwDialogExt};
 use anyhow::Result;
 use gtk::{
     FileLauncher,
@@ -91,6 +93,12 @@ impl Browser {
             }
         });
 
+        action.proxy.connect_activate({
+            let profile = profile.clone();
+            let window = window.clone();
+            move || PreferencesDialog::proxy(&profile).present(Some(&window.g_box))
+        });
+
         // Return new activated `Self`
         Self {
             action,

src/app/browser/action.rs

@@ -2,11 +2,13 @@ mod about;
 mod close;
 mod debug;
 mod profile;
+mod proxy;
 
 use about::About;
 use close::Close;
 use debug::Debug;
 use profile::Profile;
+use proxy::Proxy;
 
 use gtk::{
     gio::SimpleActionGroup,
@@ -22,6 +24,7 @@ pub struct Action {
     pub close: Rc<Close>,
     pub debug: Rc<Debug>,
     pub profile: Rc<Profile>,
+    pub proxy: Rc<Proxy>,
     // Group
     pub id: GString,
     pub simple_action_group: SimpleActionGroup,
@@ -43,6 +46,7 @@ impl Action {
         let close = Rc::new(Close::new());
         let debug = Rc::new(Debug::new());
         let profile = Rc::new(Profile::new());
+        let proxy = Rc::new(Proxy::new());
 
         // Generate unique group ID
         let id = uuid_string_random();
@@ -55,6 +59,7 @@ impl Action {
         simple_action_group.add_action(&close.simple_action);
         simple_action_group.add_action(&debug.simple_action);
         simple_action_group.add_action(&profile.simple_action);
+        simple_action_group.add_action(&proxy.simple_action);
 
         // Done
         Self {
@@ -62,6 +67,7 @@ impl Action {
             close,
             debug,
             profile,
+            proxy,
             id,
             simple_action_group,
         }

src/app/browser/action/proxy.rs

@@ -0,0 +1,31 @@
+use gtk::{gio::SimpleAction, glib::uuid_string_random};
+
+/// [SimpleAction](https://docs.gtk.org/gio/class.SimpleAction.html) wrapper for `Profile` action of `Browser` group
+pub struct Proxy {
+    pub simple_action: SimpleAction,
+}
+
+impl Default for Proxy {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl Proxy {
+    // Constructors
+
+    /// Create new `Self`
+    pub fn new() -> Self {
+        Self {
+            simple_action: SimpleAction::new(&uuid_string_random(), None),
+        }
+    }
+
+    // Events
+
+    /// Define callback function for
+    /// [SimpleAction::activate](https://docs.gtk.org/gio/signal.SimpleAction.activate.html) signal
+    pub fn connect_activate(&self, callback: impl Fn() + 'static) {
+        self.simple_action.connect_activate(move |_, _| callback());
+    }
+}

src/app/browser/proxy.rs

@@ -0,0 +1,80 @@
+//! Proxy settings dialog
+
+mod rules;
+
+use super::Profile;
+use adw::{
+    PreferencesGroup, PreferencesPage,
+    prelude::{AdwDialogExt, PreferencesDialogExt, PreferencesGroupExt, PreferencesPageExt},
+};
+use rules::Rules;
+use std::rc::Rc;
+
+pub trait Proxy {
+    fn proxy(profile: &Rc<Profile>) -> Self;
+}
+
+impl Proxy for adw::PreferencesDialog {
+    fn proxy(profile: &Rc<Profile>) -> Self {
+        // Init components
+        let rules = Rules::build(profile);
+
+        // Init widget
+        let d = adw::PreferencesDialog::builder()
+            .search_enabled(true)
+            .title("Proxy")
+            .build();
+
+        d.add(&{
+            let p = PreferencesPage::builder()
+                .title("Rules")
+                .icon_name("system-run-symbolic")
+                .build();
+            p.add(&{
+                let g = PreferencesGroup::new();
+                g.add(&rules.widget);
+                g
+            });
+            /* @TODO URL entry p.add(&{
+                let g = PreferencesGroup::builder().title("Test").build();
+                //g.add(&Box::rules(profile));
+                g
+            });*/
+            p
+        });
+
+        d.add(
+            &PreferencesPage::builder()
+                .title("Exceptions")
+                .icon_name("action-unavailable-symbolic")
+                .build(),
+        );
+
+        d.add(
+            &PreferencesPage::builder()
+                .title("Interface")
+                .icon_name("preferences-desktop-display-symbolic")
+                .build(),
+        );
+
+        d.connect_closed({
+            let profile = profile.clone();
+            move |_| {
+                profile.proxy.clear();
+                for rule in rules.take() {
+                    if rule.validate() {
+                        profile.proxy.add_rule(
+                            rule.id,
+                            rule.is_enabled(),
+                            rule.priority(),
+                            rule.request().to_string(),
+                            rule.url().to_string(),
+                            rule.time,
+                        )
+                    }
+                }
+            }
+        });
+        d
+    }
+}

src/app/browser/proxy/rules.rs

@@ -0,0 +1,93 @@
+mod rule;
+
+use std::{cell::RefCell, collections::HashMap, rc::Rc};
+
+use super::Profile;
+use gtk::{
+    Box,
+    glib::{GString, uuid_string_random},
+    prelude::BoxExt,
+};
+use rule::Rule;
+
+pub struct Rules {
+    pub widget: Box,
+    rules: Rc<RefCell<HashMap<GString, Rule>>>,
+}
+
+impl Rules {
+    pub fn build(profile: &Rc<Profile>) -> Self {
+        let config = profile.proxy.rules();
+
+        let rules: Rc<RefCell<HashMap<GString, Rule>>> =
+            Rc::new(RefCell::new(HashMap::with_capacity(config.len())));
+
+        let form = Box::builder()
+            .orientation(gtk::Orientation::Vertical)
+            .spacing(8)
+            .build();
+
+        {
+            let mut r = rules.borrow_mut();
+
+            for proxy in config {
+                let key = uuid_string_random();
+                let rule = Rule::build(
+                    proxy.id,
+                    Some(&proxy.time),
+                    Some(&proxy.request),
+                    Some(&proxy.url),
+                    Some(proxy.priority),
+                    proxy.is_enabled,
+                    {
+                        let rules = rules.clone();
+                        let key = key.clone();
+                        let form = form.clone();
+                        move || form.remove(&rules.borrow_mut().remove(&key).unwrap().widget)
+                    },
+                );
+                rule.validate();
+                form.append(&rule.widget);
+                assert!(r.insert(key, rule).is_none())
+            }
+        }
+
+        let add = {
+            let b = Box::builder()
+                .orientation(gtk::Orientation::Vertical)
+                .spacing(8)
+                .build();
+
+            b.append(&rule::new({
+                let rules = rules.clone();
+                let form = form.clone();
+                move || {
+                    let key = uuid_string_random();
+                    let rule = Rule::build(None, None, None, None, None, false, {
+                        let rules = rules.clone();
+                        let key = key.clone();
+                        let form = form.clone();
+                        move || form.remove(&rules.borrow_mut().remove(&key).unwrap().widget)
+                    });
+                    form.append(&rule.widget);
+                    assert!(rules.borrow_mut().insert(key, rule).is_none())
+                }
+            }));
+            b
+        };
+
+        let widget = Box::builder()
+            .orientation(gtk::Orientation::Vertical)
+            .spacing(8)
+            .build();
+
+        widget.append(&form);
+        widget.append(&add);
+
+        Self { rules, widget }
+    }
+
+    pub fn take(&self) -> Vec<Rule> {
+        self.rules.take().into_values().collect()
+    }
+}

src/app/browser/proxy/rules/rule.rs

@@ -0,0 +1,250 @@
+use gtk::{
+    Align, Box, Button, Entry, Switch,
+    glib::{DateTime, GString},
+    prelude::{BoxExt, ButtonExt, EditableExt, WidgetExt},
+};
+
+pub struct Rule {
+    pub id: Option<i64>,
+    priority: Entry,
+    request: Entry,
+    status: Switch,
+    url: Entry,
+    pub time: DateTime,
+    pub widget: Box,
+}
+
+impl Rule {
+    // Constructors
+
+    pub fn build(
+        id: Option<i64>,
+        time: Option<&DateTime>,
+        request: Option<&str>,
+        url: Option<&str>,
+        priority: Option<i32>,
+        is_enabled: bool,
+        on_delete: impl Fn() + 'static,
+    ) -> Self {
+        // Init components
+
+        let status = Switch::builder()
+            .active(is_enabled)
+            .valign(Align::Center)
+            .build();
+
+        let request = Entry::builder()
+            .max_width_chars(12)
+            .placeholder_text("Request")
+            .tooltip_text("Supports regex expressions")
+            .text(request.unwrap_or(".*"))
+            .build();
+
+        let url = Entry::builder()
+            .hexpand(true)
+            .placeholder_text("Proxy URL")
+            .text(url.unwrap_or_default())
+            .tooltip_text("e.g. socks5://127.0.0.1:1080")
+            .build();
+
+        let priority = Entry::builder()
+            .max_width_chars(1)
+            .placeholder_text("Priority")
+            .text(priority.unwrap_or(0).to_string())
+            .tooltip_text("Apply in priority")
+            .build();
+
+        let delete = Button::builder()
+            .css_classes(["error"])
+            .icon_name("user-trash-symbolic")
+            .tooltip_text("Delete")
+            .build();
+
+        // Init widget
+
+        let widget = Box::builder()
+            .orientation(gtk::Orientation::Horizontal)
+            .spacing(8)
+            .build();
+
+        widget.append(&status);
+        widget.append(&request);
+        widget.append(&url);
+        widget.append(&priority);
+        widget.append(&delete);
+
+        // Activate
+
+        delete.connect_clicked({
+            let c = std::rc::Rc::new(on_delete);
+            move |this| {
+                use adw::{
+                    AlertDialog, ResponseAppearance,
+                    prelude::{AdwDialogExt, AlertDialogExt, AlertDialogExtManual},
+                };
+
+                const RESPONSE_CONFIRM: (&str, &str) = ("confirm", "Confirm");
+                const RESPONSE_CANCEL: (&str, &str) = ("cancel", "Cancel");
+
+                let dialog = AlertDialog::builder()
+                    .heading("Delete this rule?")
+                    .close_response(RESPONSE_CANCEL.0)
+                    .default_response(RESPONSE_CONFIRM.0)
+                    .build();
+
+                dialog.add_responses(&[RESPONSE_CANCEL, RESPONSE_CONFIRM]);
+                dialog.set_response_appearance(RESPONSE_CONFIRM.0, ResponseAppearance::Destructive);
+                dialog.connect_response(None, {
+                    let c = c.clone();
+                    move |dialog, response| {
+                        dialog.set_response_enabled(response, false); // prevent double-click
+                        if response == RESPONSE_CONFIRM.0 {
+                            c()
+                        }
+                    }
+                });
+                dialog.present(Some(this))
+            }
+        });
+
+        priority.connect_changed({
+            let url = url.clone();
+            move |this| {
+                validate(this, &url);
+            }
+        });
+
+        url.connect_changed({
+            let priority = priority.clone();
+            move |this| {
+                validate(&priority, this);
+            }
+        });
+
+        status.connect_state_set({
+            let priority = priority.clone();
+            let request = request.clone();
+            let url = url.clone();
+            move |_, state| {
+                validate(&priority, &url);
+
+                priority.set_sensitive(state);
+                request.set_sensitive(state);
+                url.set_sensitive(state);
+
+                gtk::glib::Propagation::Proceed
+            }
+        });
+
+        Self {
+            id,
+            priority,
+            request,
+            status,
+            time: time.cloned().unwrap_or(DateTime::now_local().unwrap()),
+            url,
+            widget,
+        }
+    }
+
+    // Actions
+
+    pub fn validate(&self) -> bool {
+        validate(&self.priority, &self.url)
+    }
+
+    // Getters
+
+    pub fn priority(&self) -> i32 {
+        self.priority.text().parse::<i32>().unwrap_or_default()
+    }
+
+    pub fn request(&self) -> GString {
+        self.request.text()
+    }
+
+    pub fn url(&self) -> GString {
+        self.url.text()
+    }
+
+    pub fn is_enabled(&self) -> bool {
+        self.status.is_active()
+    }
+}
+
+pub fn new(on_add: impl Fn() + 'static) -> Box {
+    let b = Box::builder()
+        .orientation(gtk::Orientation::Horizontal)
+        .spacing(8)
+        .build();
+
+    b.append(&{
+        let add = Button::builder()
+            .css_classes(["success"])
+            .hexpand(true)
+            .icon_name("list-add-symbolic")
+            .tooltip_text("Add proxy")
+            .build();
+
+        add.connect_clicked(move |_| on_add());
+        add
+    });
+    b
+}
+
+fn validate(priority: &Entry, url: &Entry) -> bool {
+    fn highlight(entry: &Entry, error: Result<(), String>) {
+        const E: &str = "error";
+        match error {
+            Err(e) => {
+                entry.set_css_classes(&[E]);
+                entry.set_tooltip_text(Some(&e))
+            }
+            Ok(()) => {
+                entry.remove_css_class(E);
+                entry.set_tooltip_text(Some("Value is valid"))
+            }
+        }
+    }
+
+    fn validate_priority(value: &str) -> Result<(), String> {
+        if value.parse::<i32>().is_err() {
+            Err("Priority value is not valid integer".to_string())
+        } else {
+            Ok(())
+        }
+    }
+
+    fn validate_url(value: &str) -> Result<(), String> {
+        match gtk::glib::Uri::parse(value, gtk::glib::UriFlags::NONE) {
+            Ok(uri) => {
+                if uri.scheme().is_empty() {
+                    Err("Scheme is empty".to_string())
+                } else if uri.host().is_none() {
+                    Err("Host is required".to_string())
+                } else if uri.port() == -1 {
+                    Err("Port is required".to_string())
+                } else if !uri.path().is_empty() {
+                    Err("URL should not contain the path part".to_string())
+                } else if uri.query().is_some() {
+                    Err("URL should not contain the query part".to_string())
+                } else if uri.fragment().is_some() {
+                    Err("URL should not contain the fragment (anchor) part".to_string())
+                } else {
+                    Ok(())
+                }
+            }
+            Err(e) => Err(e.to_string()),
+        }
+    }
+
+    let v = validate_priority(&priority.text());
+    let is_valid_priority = v.is_ok();
+    highlight(priority, v);
+
+    let v = validate_url(&url.text());
+    let is_valid_url = v.is_ok();
+    highlight(url, v);
+
+    is_valid_priority && is_valid_url
+}

src/app/browser/window/header/bar/menu.rs

@@ -160,6 +160,13 @@ impl Menu for MenuButton {
 
                 main.append_submenu(Some("History"), &main_history);
 
+            // Main > Proxy
+            main.append(Some("Proxy settings"), Some(&format!(
+                "{}.{}",
+                browser_action.id,
+                browser_action.proxy.simple_action.name()
+            ))); // @TODO make the Settings submenu
+
             // Main > Tool
             let main_tool = gio::Menu::new();
 
@@ -170,7 +177,7 @@ impl Menu for MenuButton {
                     browser_action.debug.simple_action.name()
                 )));
 
-                main_tool.append(Some("Profile"), Some(&format!(
+                main_tool.append(Some("Open profile directory"), Some(&format!(
                     "{}.{}",
                     browser_action.id,
                     browser_action.profile.simple_action.name()
@@ -200,7 +207,7 @@ impl Menu for MenuButton {
                 .build();
 
             // Generate dynamical menu items
-            menu_button.set_create_popup_func({
+             menu_button.set_create_popup_func({
                 let profile = profile.clone();
                 let main_bookmarks = main_bookmarks.clone();
                 let window_action = window_action.clone();