keyfork-prompt: add PromptManager::prompt_message

keyfork-prompt/src/bin/test-basic-prompt.rs

@@ -4,9 +4,9 @@ use keyfork_prompt::*;
 
 pub fn main() -> Result<()> {
     let mut mgr = PromptManager::new(stdin(), stdout())?;
-    let line = mgr.prompt_input("Mnemonic: ")?;
+    mgr.prompt_input("Mnemonic: ")?;
-    dbg!(&line);
+    mgr.prompt_passphrase("Passphrase: ")?;
-    let line = mgr.prompt_passphrase("Passphrase: ")?;
+    mgr.prompt_message("Please press enter.")?;
-    dbg!(&line);
+    mgr.prompt_message("Please press space bar.")?;
     Ok(())
 }

keyfork-prompt/src/lib.rs

@@ -58,7 +58,6 @@ where
     }
 
     // TODO: return secrecy::Secret<String>
-    // TODO: write a guard drop system for raw mode
     pub fn prompt_passphrase(&mut self, prompt: &str) -> Result<String> {
         let mut terminal = AlternateScreen::new(&mut self.write)?;
         let mut terminal = RawMode::new(&mut terminal)?;
@@ -84,4 +83,22 @@ where
         }
         Ok(passphrase)
     }
+
+    pub fn prompt_message(&mut self, prompt: &str) -> Result<()> {
+        let mut terminal = AlternateScreen::new(&mut self.write)?;
+        let mut terminal = RawMode::new(&mut terminal)?;
+        terminal
+            .execute(terminal::Clear(terminal::ClearType::All))?
+            .execute(Print(prompt))?;
+        loop {
+            match read()? {
+                Event::Key(k) => match k.code {
+                    KeyCode::Enter | KeyCode::Char(' ') => break,
+                    _ => (),
+                },
+                _ => (),
+            }
+        }
+        Ok(())
+    }
 }