Add choose feerate step

gui/src/app/state/spend/mod.rs

@@ -81,19 +81,20 @@ impl From<SpendPanel> for Box<dyn State> {
 }
 
 pub struct CreateSpendPanel {
-    coins: Vec<Coin>,
     draft: step::TransactionDraft,
     current: usize,
     steps: Vec<Box<dyn step::Step>>,
 }
 
 impl CreateSpendPanel {
-    pub fn new(coins: &[Coin]) -> Self {
+    pub fn new(_coins: &[Coin]) -> Self {
         Self {
-            coins: coins.to_vec(),
             draft: step::TransactionDraft::default(),
             current: 0,
-            steps: vec![Box::new(step::ChooseRecipients::default())],
+            steps: vec![
+                Box::new(step::ChooseRecipients::default()),
+                Box::new(step::ChooseFeerate::default()),
+            ],
         }
     }
 }
@@ -113,6 +114,18 @@ impl State for CreateSpendPanel {
             return redirect(Menu::Spend);
         }
 
+        if matches!(message, Message::View(view::Message::Next)) {
+            if self.steps.get(self.current + 1).is_some() {
+                self.current += 1;
+            }
+        }
+
+        if matches!(message, Message::View(view::Message::Previous)) {
+            if self.steps.get(self.current - 1).is_some() {
+                self.current -= 1;
+            }
+        }
+
         if let Some(step) = self.steps.get_mut(self.current) {
             return step.update(daemon, cache, message);
         }

gui/src/app/state/spend/step.rs

@@ -162,3 +162,45 @@ impl Recipient {
         view::spend::step::recipient_view(i, &self.address, &self.amount)
     }
 }
+
+#[derive(Default)]
+pub struct ChooseFeerate {
+    feerate: form::Value<String>,
+}
+
+impl Step for ChooseFeerate {
+    fn update(
+        &mut self,
+        _daemon: Arc<dyn Daemon + Sync + Send>,
+        _cache: &Cache,
+        message: Message,
+    ) -> Command<Message> {
+        if let Message::View(view::Message::CreateSpend(view::CreateSpendMessage::FeerateEdited(
+            s,
+        ))) = message
+        {
+            if s.parse::<u64>().is_ok() {
+                self.feerate.value = s;
+                self.feerate.valid = true;
+            } else if s.is_empty() {
+                self.feerate.value = "".to_string();
+                self.feerate.valid = true;
+            } else {
+                self.feerate.valid = false;
+            }
+        }
+
+        Command::none()
+    }
+
+    fn apply(&self, draft: &mut TransactionDraft) {
+        draft.feerate = self.feerate.value.parse::<u64>().expect("Checked before");
+    }
+
+    fn view<'a>(&'a self, _cache: &'a Cache) -> Element<'a, view::Message> {
+        view::spend::step::choose_feerate_view(
+            &self.feerate,
+            self.feerate.valid && !self.feerate.value.is_empty(),
+        )
+    }
+}

gui/src/app/view/message.rs

@@ -10,6 +10,7 @@ pub enum Message {
     Settings(usize, SettingsMessage),
     CreateSpend(CreateSpendMessage),
     Next,
+    Previous,
 }
 
 #[derive(Debug, Clone)]

gui/src/app/view/mod.rs

@@ -273,7 +273,9 @@ pub fn modal<'a, T: Into<Element<'a, Message>>>(
                 row()
                     .push(if is_previous {
                         column()
-                            .push(button::transparent(None, "< Previous"))
+                            .push(
+                                button::transparent(None, "< Previous").on_press(Message::Previous),
+                            )
                             .width(Length::Fill)
                     } else {
                         column().width(Length::Fill)

gui/src/app/view/spend/step.rs

@@ -83,3 +83,37 @@ pub fn recipient_view<'a>(
         .width(Length::Fill)
         .into()
 }
+
+pub fn choose_feerate_view<'a>(
+    feerate: &form::Value<String>,
+    is_valid: bool,
+) -> Element<'a, Message> {
+    modal(
+        true,
+        None,
+        column()
+            .push(text("Choose feerate").bold().size(50))
+            .push(
+                container(
+                    form::Form::new("Feerate", feerate, move |msg| {
+                        Message::CreateSpend(CreateSpendMessage::FeerateEdited(msg))
+                    })
+                    .warning("Please enter correct feerate")
+                    .size(20)
+                    .padding(10),
+                )
+                .width(Length::Units(250)),
+            )
+            .push_maybe(if is_valid {
+                Some(
+                    button::primary(None, "Next")
+                        .on_press(Message::Next)
+                        .width(Length::Units(100)),
+                )
+            } else {
+                None
+            })
+            .spacing(20)
+            .align_items(Alignment::Center),
+    )
+}