1 files changed, 51 insertions, 0 deletions
diff --git a/vendor/dialoguer/examples/history.rs b/vendor/dialoguer/examples/history.rs
new file mode 100644
index 0000000..0d69b27
--- /dev/null
+++ b/vendor/dialoguer/examples/history.rs
@@ -0,0 +1,51 @@
+use dialoguer::{theme::ColorfulTheme, History, Input};
+use std::{collections::VecDeque, process};
+
+fn main() {
+    println!("Use 'exit' to quit the prompt");
+    println!("In this example, history is limited to 4 entries");
+    println!("Use the Up/Down arrows to scroll through history");
+    println!();
+
+    let mut history = MyHistory::default();
+
+    loop {
+        if let Ok(cmd) = Input::<String>::with_theme(&ColorfulTheme::default())
+            .with_prompt("dialoguer")
+            .history_with(&mut history)
+            .interact_text()
+        {
+            if cmd == "exit" {
+                process::exit(0);
+            }
+            println!("Entered {}", cmd);
+        }
+    }
+}
+
+struct MyHistory {
+    max: usize,
+    history: VecDeque<String>,
+}
+
+impl Default for MyHistory {
+    fn default() -> Self {
+        MyHistory {
+            max: 4,
+            history: VecDeque::new(),
+        }
+    }
+}
+
+impl<T: ToString> History<T> for MyHistory {
+    fn read(&self, pos: usize) -> Option<String> {
+        self.history.get(pos).cloned()
+    }
+
+    fn write(&mut self, val: &T) {
+        if self.history.len() == self.max {
+            self.history.pop_back();
+        }
+        self.history.push_front(val.to_string());
+    }
+}