Add available balance to choose recipient step

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

@@ -109,7 +109,7 @@ impl CreateSpendPanel {
             draft: step::TransactionDraft::default(),
             current: 0,
             steps: vec![
-                Box::new(step::ChooseRecipients::default()),
+                Box::new(step::ChooseRecipients::new(coins)),
                 Box::new(step::ChooseCoins::new(
                     coins.to_vec(),
                     timelock,

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

@@ -42,22 +42,30 @@ pub trait Step {
 }
 
 pub struct ChooseRecipients {
+    balance_available: Amount,
     recipients: Vec<Recipient>,
     is_valid: bool,
     is_duplicate: bool,
 }
 
-impl std::default::Default for ChooseRecipients {
-    fn default() -> Self {
+impl ChooseRecipients {
+    pub fn new(coins: &[Coin]) -> Self {
         Self {
+            balance_available: coins
+                .iter()
+                .filter_map(|coin| {
+                    if coin.spend_info.is_none() {
+                        Some(coin.amount)
+                    } else {
+                        None
+                    }
+                })
+                .sum(),
             recipients: vec![Recipient::default()],
             is_valid: false,
             is_duplicate: false,
         }
     }
-}
-
-impl ChooseRecipients {
     fn check_valid(&mut self) {
         self.is_valid = !self.recipients.is_empty();
         self.is_duplicate = false;
@@ -117,6 +125,7 @@ impl Step for ChooseRecipients {
 
     fn view<'a>(&'a self, _cache: &'a Cache) -> Element<'a, view::Message> {
         view::spend::step::choose_recipients_view(
+            &self.balance_available,
             self.recipients
                 .iter()
                 .enumerate()

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

@@ -23,12 +23,13 @@ use crate::{
     },
 };
 
-pub fn choose_recipients_view(
-    recipients: Vec<Element<Message>>,
+pub fn choose_recipients_view<'a>(
+    balance_available: &'a Amount,
+    recipients: Vec<Element<'a, Message>>,
     total_amount: Amount,
     is_valid: bool,
     duplicate: bool,
-) -> Element<Message> {
+) -> Element<'a, Message> {
     modal(
         false,
         None,
@@ -53,8 +54,14 @@ pub fn choose_recipients_view(
                     .spacing(20)
                     .align_items(Alignment::Center)
                     .push(
-                        Container::new(text(format!("{}", total_amount)).bold())
-                            .width(Length::Fill),
+                        Container::new(
+                            Row::new()
+                                .align_items(Alignment::Center)
+                                .spacing(5)
+                                .push(text(format!("{}", total_amount)).bold())
+                                .push(text(format!("/ {}", balance_available))),
+                        )
+                        .width(Length::Fill),
                     )
                     .push_maybe(if duplicate {
                         Some(text("Two recipient addresses are the same").style(color::WARNING))