src/apps/wallet: use max_lines in Text component

src/apps/wallet/cipher_key_value.py

@@ -23,7 +23,7 @@ async def cipher_key_value(ctx, msg):
         else:
             title = 'Decrypt value'
         lines = split_words(msg.key, ui.WIDTH - 2 * TEXT_MARGIN_LEFT, metric=lambda x: ui.display.text_width(x, ui.NORMAL))
-        await require_confirm(ctx, Text(title, ui.ICON_DEFAULT, *lines))
+        await require_confirm(ctx, Text(title, ui.ICON_DEFAULT, max_lines=5, *lines))
 
     node = await seed.derive_node(ctx, msg.address_n)
     value = compute_cipher_key_value(msg, node.private_key())

src/apps/wallet/sign_message.py

@@ -34,5 +34,5 @@ async def sign_message(ctx, msg):
 
 async def confirm_sign_message(ctx, message):
     message = split_message(message)
-    content = Text('Sign message', ui.ICON_CONFIRM, *message)
+    content = Text('Sign message', ui.ICON_DEFAULT, max_lines=5, *message)
     await require_confirm(ctx, content)

src/apps/wallet/verify_message.py

@@ -37,5 +37,5 @@ async def verify_message(ctx, msg):
 
 async def confirm_verify_message(ctx, message):
     message = split_message(message)
-    content = Text('Verify message', ui.ICON_CONFIRM, ui.MONO, *message)
+    content = Text('Verify message', ui.ICON_DEFAULT, max_lines=5, *message)
     await require_confirm(ctx, content)

src/trezor/ui/text.py

@@ -8,11 +8,12 @@ TEXT_MARGIN_LEFT = const(14)
 
 class Text(ui.Widget):
 
-    def __init__(self, header_text, header_icon, *content, icon_color=ui.ORANGE_ICON):
+    def __init__(self, header_text, header_icon, *content, icon_color=ui.ORANGE_ICON, max_lines=None):
         self.header_text = header_text
         self.header_icon = header_icon
         self.icon_color = icon_color
         self.content = content
+        self.max_lines = max_lines
 
     def render(self):
         offset_x = TEXT_MARGIN_LEFT
@@ -22,10 +23,16 @@ class Text(ui.Widget):
         bg = ui.BG
         ui.header(self.header_text, self.header_icon, ui.TITLE_GREY, ui.BG, self.icon_color)
 
+        line = 1
         for item in self.content:
             if isinstance(item, str):
-                ui.display.text(offset_x, offset_y, item, style, fg, bg)
+                if self.max_lines is not None and line >= self.max_lines:
+                    ui.display.text(offset_x, offset_y, item + '...', style, fg, bg)
+                    break
+                else:
+                    ui.display.text(offset_x, offset_y, item, style, fg, bg)
                 offset_y += TEXT_LINE_HEIGHT
+                line += 1
             elif item == ui.MONO or item == ui.NORMAL or item == ui.BOLD:
                 style = item
             else: