feat: Added initial_str_value for CustomType

CHANGELOG.md

@@ -23,10 +23,12 @@
   - Ctrl-b/Ctrl-f for left/right
   - Ctrl-j/Ctrl-g for enter/cancel
 - Added 'with_starting_filter_input' to both Select and MultiSelect, which allows for setting an initial value to the filter section of the prompt.
+- Added starting_input for CustomType. [#194](https://github.com/mikaelmello/inquire/pull/194)
 - Added 'without_filtering' to both Select and MultiSelect, useful when you want to simplify the UX if the filter does not add any value, such as when the list is already short.
 - Added 'with_answered_prompt_prefix' to RenderConfig to allow customization of answered prompt prefix.
 - Revamped keybindings for DateSelect.
 
+
 ### Fixes
 
 - Fixed typos in the code's comments.

inquire/examples/confirm.rs

@@ -17,6 +17,7 @@ fn main() {
 
     let ans = Confirm {
         message: "Are you happy?",
+        starting_input: None,
         default: Some(false),
         placeholder: Some("si|no"),
         help_message: Some("It's alright if you're not"),

inquire/examples/custom_type.rs

@@ -2,6 +2,7 @@ use inquire::{validator::Validation, CustomType};
 
 fn main() {
     let amount = CustomType::<f64>::new("How much do you want to donate?")
+        .with_starting_input("10.00")
         .with_formatter(&|i| format!("${i:.2}"))
         .with_error_message("Please type a valid number")
         .with_help_message("Type the amount in US dollars using a decimal point as a separator")

inquire/src/prompts/confirm/mod.rs

@@ -61,6 +61,13 @@ pub struct Confirm<'a> {
     /// Message to be presented to the user.
     pub message: &'a str,
 
+    /// Initial value of the prompt's text input.
+    ///
+    /// If you want to set a default value for the prompt, returned when the user's submission is empty, see [`default`].
+    ///
+    /// [`default`]: Self::default
+    pub starting_input: Option<&'a str>,
+
     /// Default value, returned when the user input is empty.
     pub default: Option<bool>,
 
@@ -115,6 +122,7 @@ impl<'a> Confirm<'a> {
     pub fn new(message: &'a str) -> Self {
         Self {
             message,
+            starting_input: None,
             default: None,
             placeholder: None,
             help_message: None,
@@ -126,6 +134,16 @@ impl<'a> Confirm<'a> {
         }
     }
 
+    /// Sets the initial value of the prompt's text input.
+    ///
+    /// If you want to set a default value for the prompt, returned when the user's submission is empty, see [`with_default`].
+    ///
+    /// [`with_default`]: Self::with_default
+    pub fn with_starting_input(mut self, message: &'a str) -> Self {
+        self.starting_input = Some(message);
+        self
+    }
+
     /// Sets the default input.
     pub fn with_default(mut self, default: bool) -> Self {
         self.default = Some(default);
@@ -224,6 +242,7 @@ impl<'a> From<Confirm<'a>> for CustomType<'a, bool> {
     fn from(co: Confirm<'a>) -> Self {
         Self {
             message: co.message,
+            starting_input: co.starting_input,
             default: co.default,
             default_value_formatter: co.default_value_formatter,
             placeholder: co.placeholder,

inquire/src/prompts/custom_type/mod.rs

@@ -42,6 +42,7 @@ use self::prompt::CustomTypePrompt;
 ///
 /// let amount_prompt: CustomType<f64> = CustomType {
 ///     message: "How much is your travel going to cost?",
+///     starting_input: None,
 ///     formatter: &|i| format!("${:.2}", i),
 ///     default_value_formatter: &|i| format!("${:.2}", i),
 ///     default: None,
@@ -80,6 +81,13 @@ pub struct CustomType<'a, T> {
     /// Message to be presented to the user.
     pub message: &'a str,
 
+    /// Initial value of the prompt's text input.
+    ///
+    /// If you want to set a default value for the prompt, returned when the user's submission is empty, see [`default`].
+    ///
+    /// [`default`]: Self::default
+    pub starting_input: Option<&'a str>,
+
     /// Default value, returned when the user input is empty.
     pub default: Option<T>,
 
@@ -134,6 +142,7 @@ where
     {
         Self {
             message,
+            starting_input: None,
             default: None,
             placeholder: None,
             help_message: None,
@@ -146,6 +155,16 @@ where
         }
     }
 
+    /// Sets the initial value of the prompt's text input.
+    ///
+    /// If you want to set a default value for the prompt, returned when the user's submission is empty, see [`with_default`].
+    ///
+    /// [`with_default`]: Self::with_default
+    pub fn with_starting_input(mut self, message: &'a str) -> Self {
+        self.starting_input = Some(message);
+        self
+    }
+
     /// Sets the default input.
     pub fn with_default(mut self, default: T) -> Self {
         self.default = Some(default);

inquire/src/prompts/custom_type/prompt.rs

@@ -30,6 +30,13 @@ where
     T: Clone,
 {
     fn from(co: CustomType<'a, T>) -> Self {
+        let input = Input::new_with(co.starting_input.unwrap_or_default());
+        let input = if let Some(placeholder) = co.placeholder {
+            input.with_placeholder(placeholder)
+        } else {
+            input
+        };
+
         Self {
             message: co.message,
             config: (&co).into(),
@@ -40,10 +47,7 @@ where
             default_value_formatter: co.default_value_formatter,
             validators: co.validators,
             parser: co.parser,
-            input: co
-                .placeholder
-                .map(|p| Input::new().with_placeholder(p))
-                .unwrap_or_else(Input::new),
+            input,
             error_message: co.error_message,
         }
     }