chore(core): In apps.bitcoin add confirm_replacement and confirm_modify_fee layouts.

core/src/apps/bitcoin/sign_tx/helpers.py

@@ -54,6 +54,31 @@ class UiConfirmOutput(UiConfirm):
     __eq__ = utils.obj_eq
 
 
+class UiConfirmReplacement(UiConfirm):
+    def __init__(self, description: str, txid: bytes):
+        self.description = description
+        self.txid = txid
+
+    def confirm_dialog(self, ctx: wire.Context) -> Awaitable[Any]:
+        return layout.confirm_replacement(ctx, self.description, self.txid)
+
+    __eq__ = utils.obj_eq
+
+
+class UiConfirmModifyFee(UiConfirm):
+    def __init__(self, user_fee_change: int, total_fee_new: int, coin: CoinInfo):
+        self.user_fee_change = user_fee_change
+        self.total_fee_new = total_fee_new
+        self.coin = coin
+
+    def confirm_dialog(self, ctx: wire.Context) -> Awaitable[Any]:
+        return layout.confirm_modify_fee(
+            ctx, self.user_fee_change, self.total_fee_new, self.coin
+        )
+
+    __eq__ = utils.obj_eq
+
+
 class UiConfirmTotal(UiConfirm):
     def __init__(self, spending: int, fee: int, coin: CoinInfo):
         self.spending = spending
@@ -126,6 +151,14 @@ def confirm_output(output: TxOutput, coin: CoinInfo) -> Awaitable[None]:  # type
     return (yield UiConfirmOutput(output, coin))
 
 
+def confirm_replacement(description: str, txid: bytes) -> Awaitable[Any]:  # type: ignore
+    return (yield UiConfirmReplacement(description, txid))
+
+
+def confirm_modify_fee(user_fee_change: int, total_fee_new: int, coin: CoinInfo) -> Awaitable[Any]:  # type: ignore
+    return (yield UiConfirmModifyFee(user_fee_change, total_fee_new, coin))
+
+
 def confirm_total(spending: int, fee: int, coin: CoinInfo) -> Awaitable[None]:  # type: ignore
     return (yield UiConfirmTotal(spending, fee, coin))
 

core/src/apps/bitcoin/sign_tx/layout.py

@@ -59,6 +59,34 @@ async def confirm_output(ctx: wire.Context, output: TxOutput, coin: CoinInfo) ->
     await require_confirm(ctx, text, ButtonRequestType.ConfirmOutput)
 
 
+async def confirm_replacement(ctx: wire.Context, description: str, txid: bytes) -> None:
+    text = Text(description, ui.ICON_SEND, ui.GREEN)
+    text.normal("Confirm transaction ID:")
+    hex_data = hexlify(txid).decode()
+    if len(hex_data) >= 18 * 4:
+        hex_data = hex_data[: (18 * 4 - 3)] + "..."
+    text.mono(*split_op_return(hex_data))
+    await require_confirm(ctx, text, ButtonRequestType.SignTx)
+
+
+async def confirm_modify_fee(
+    ctx: wire.Context, user_fee_change: int, total_fee_new: int, coin: CoinInfo
+) -> None:
+    text = Text("Fee modification", ui.ICON_SEND, ui.GREEN)
+    if user_fee_change == 0:
+        text.normal("Your fee did not change.")
+    else:
+        if user_fee_change < 0:
+            text.normal("Decrease your fee by:")
+        else:
+            text.normal("Increase your fee by:")
+        text.bold(format_coin_amount(abs(user_fee_change), coin))
+    text.br_half()
+    text.normal("Transaction fee:")
+    text.bold(format_coin_amount(total_fee_new, coin))
+    await require_hold_to_confirm(ctx, text, ButtonRequestType.SignTx)
+
+
 async def confirm_joint_total(
     ctx: wire.Context, spending: int, total: int, coin: CoinInfo
 ) -> None: