Restart spend process according to current state

Spend process keeps its state if it is the first step.
User can click on Clear to reset if he wants.

Author: edouardparis

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

@@ -291,6 +291,17 @@ impl Step for DefineSpend {
                         self.batch_label.valid = label.len() <= 100;
                         self.batch_label.value = label;
                     }
+                    view::CreateSpendMessage::Clear => {
+                        self.recipients = vec![Recipient::default()];
+                        self.feerate.value = "".to_string();
+                        self.feerate.valid = true;
+                        for (_, selected) in &mut self.coins {
+                            *selected = false;
+                        }
+                        self.is_user_coin_selection = false;
+                        self.warning = None;
+                        return Command::none();
+                    }
                     view::CreateSpendMessage::AddRecipient => {
                         self.recipients.push(Recipient::default());
                     }

gui/src/app/view/message.rs

@@ -37,6 +37,7 @@ pub enum CreateSpendMessage {
     FeerateEdited(String),
     SelectPath(usize),
     Generate,
+    Clear,
 }
 
 #[derive(Debug, Clone)]

gui/src/app/view/mod.rs

@@ -98,7 +98,7 @@ pub fn sidebar<'a>(menu: &Menu, cache: &'a Cache) -> Container<'a, Message> {
     let spend_button = if *menu == Menu::CreateSpendTx {
         row!(
             button::menu_active(Some(send_icon()), "Send")
-                .on_press(Message::Menu(Menu::CreateSpendTx))
+                .on_press(Message::Reload)
                 .width(iced::Length::Fill),
             menu_green_bar()
         )

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

@@ -265,7 +265,7 @@ pub fn create_spend_tx<'a>(
                     .push(Space::with_width(Length::Fill))
                     .push(
                         button::primary(None, "Clear")
-                            .on_press(Message::Menu(Menu::CreateSpendTx))
+                            .on_press(Message::CreateSpend(CreateSpendMessage::Clear))
                             .width(Length::Fixed(100.0)),
                     )
                     .push(