Replace some &str -> S: Into<String>

Add back the "Ok" button to `examples/edit.rs`

examples/edit.rs

@@ -6,23 +6,33 @@ fn main() {
     let mut siv = Cursive::new();
 
     // Create a dialog with an edit text and a button.
+    // The user can either hit the <Ok> button,
+    // or press Enter on the edit text.
     siv.add_layer(Dialog::empty()
         .title("Enter your name")
         .padding((1, 1, 1, 0))
         .content(EditView::new()
             .min_length(20)
-                           .on_submit(|s, name| {
-                               if name.is_empty() {
-                                   s.add_layer(Dialog::new(TextView::new("Please enter a name!"))
-                                               .dismiss_button("Ok"));
-                               } else {
-                                   let content = format!("Hello {}!", name);
-                                   s.pop_layer();
-                                   s.add_layer(Dialog::new(TextView::new(&content))
-                                               .button("Quit", |s| s.quit()));
-                               }
-                           }))
-                 );
+            .on_submit(show_popup)
+            .with_id("name"))
+        .button("Ok", |s| {
+            let name = s.find_id::<EditView>("name")
+                .unwrap()
+                .get_content();
+            show_popup(s, &name);
+        }));
 
     siv.run();
 }
+
+fn show_popup(s: &mut Cursive, name: &str) {
+    if name.is_empty() {
+        s.add_layer(Dialog::info("Please enter a name!"));
+    } else {
+        let content = format!("Hello {}!", name);
+        s.pop_layer();
+        s.add_layer(Dialog::new(TextView::new(content))
+            .button("Quit", |s| s.quit()));
+    }
+
+}

src/views/button.rs

@@ -26,11 +26,11 @@ pub struct Button {
 
 impl Button {
     /// Creates a new button with the given content and callback.
-    pub fn new<F>(label: &str, cb: F) -> Self
+    pub fn new<F, S: Into<String>>(label: S, cb: F) -> Self
         where F: Fn(&mut Cursive) + 'static
     {
         Button {
-            label: label.to_string(),
+            label: label.into(),
             callback: Callback::from_fn(cb),
             enabled: true,
         }

src/views/dialog.rs

@@ -81,14 +81,14 @@ impl Dialog {
     /// Convenient method to create an infobox.
     ///
     /// It will contain the given text and a `Ok` dismiss button.
-    pub fn info(text: &str) -> Self {
+    pub fn info<S: Into<String>>(text: S) -> Self {
         Self::new(TextView::new(text)).dismiss_button("Ok")
     }
 
     /// Adds a button to the dialog with the given label and callback.
     ///
     /// Consumes and returns self for easy chaining.
-    pub fn button<F>(mut self, label: &str, cb: F) -> Self
+    pub fn button<F, S: Into<String>>(mut self, label: S, cb: F) -> Self
         where F: Fn(&mut Cursive) + 'static
     {
         self.buttons.push(SizedView::new(Button::new(label, cb)));
@@ -113,14 +113,14 @@ impl Dialog {
     }
 
     /// Shortcut method to add a button that will dismiss the dialog.
-    pub fn dismiss_button(self, label: &str) -> Self {
+    pub fn dismiss_button<S: Into<String>>(self, label: S) -> Self {
         self.button(label, |s| s.screen_mut().pop_layer())
     }
 
     /// Sets the title of the dialog.
     /// If not empty, it will be visible at the top.
-    pub fn title(mut self, label: &str) -> Self {
-        self.title = label.to_string();
+    pub fn title<S: Into<String>>(mut self, label: S) -> Self {
+        self.title = label.into();
         self
     }
 

src/views/edit_view.rs

@@ -167,8 +167,8 @@ impl EditView {
     }
 
     /// Get the current text.
-    pub fn get_content(&self) -> &str {
-        &&self.content
+    pub fn get_content(&self) -> Rc<String> {
+        self.content.clone()
     }
 
     /// Sets the current content to the given value.
@@ -231,7 +231,7 @@ impl View for EditView {
                     if self.secret {
                         printer.print_hline((0, 0), width, "*");
                     } else {
-                        printer.print((0, 0), self.get_content());
+                        printer.print((0, 0), &self.content);
                     }
                     printer.print_hline((width, 0),
                                         printer.size.x - width,

src/views/text_view.rs

@@ -30,20 +30,19 @@ pub struct TextView {
 }
 
 // If the last character is a newline, strip it.
-fn strip_last_newline(content: &str) -> &str {
-    if !content.is_empty() && content.chars().last().unwrap() == '\n' {
-        &content[..content.len() - 1]
-    } else {
-        content
+fn strip_last_newline(content: &mut String) {
+    if content.ends_with('\n') {
+        content.pop().unwrap();
     }
 }
 
 impl TextView {
     /// Creates a new TextView with the given content.
-    pub fn new(content: &str) -> Self {
-        let content = strip_last_newline(content);
+    pub fn new<S: Into<String>>(content: S) -> Self {
+        let mut content = content.into();
+        strip_last_newline(&mut content);
         TextView {
-            content: content.to_string(),
+            content: content,
             rows: Vec::new(),
             scrollable: true,
             scrollbase: ScrollBase::new(),
@@ -99,9 +98,10 @@ impl TextView {
     }
 
     /// Replace the text in this view.
-    pub fn set_content(&mut self, content: &str) {
-        let content = strip_last_newline(content);
-        self.content = content.to_string();
+    pub fn set_content<S: Into<String>>(&mut self, content: S) {
+        let mut content = content.into();
+        strip_last_newline(&mut content);
+        self.content = content;
         self.invalidate();
     }