6 files changed, 154 insertions, 4 deletions
diff --git a/examples/combo_box/Cargo.toml b/examples/combo_box/Cargo.toml
new file mode 100644
index 00000000..7e1e4133
--- /dev/null
+++ b/examples/combo_box/Cargo.toml
@@ -0,0 +1,11 @@
+[package]
+name = "combo_box"
+version = "0.1.0"
+authors = ["Héctor Ramón Jiménez <hector0193@gmail.com>"]
+edition = "2018"
+publish = false
+
+[dependencies]
+iced = { path = "../..", features = ["debug"] }
+iced_native = { path = "../../native" }
+iced_wgpu = { path = "../../wgpu" }
diff --git a/examples/combo_box/README.md b/examples/combo_box/README.md
new file mode 100644
index 00000000..4d9fc5b9
--- /dev/null
+++ b/examples/combo_box/README.md
@@ -0,0 +1,18 @@
+## Counter
+
+The classic counter example explained in the [`README`](../../README.md).
+
+The __[`main`]__ file contains all the code of the example.
+
+<div align="center">
+  <a href="https://gfycat.com/fairdeadcatbird">
+    <img src="https://thumbs.gfycat.com/FairDeadCatbird-small.gif">
+  </a>
+</div>
+
+You can run it with `cargo run`:
+```
+cargo run --package counter
+```
+
+[`main`]: src/main.rs
diff --git a/examples/combo_box/src/main.rs b/examples/combo_box/src/main.rs
new file mode 100644
index 00000000..416e9f76
--- /dev/null
+++ b/examples/combo_box/src/main.rs
@@ -0,0 +1,121 @@
+use iced::{
+    button, combo_box, scrollable, Align, Button, ComboBox, Container, Element,
+    Length, Sandbox, Scrollable, Settings, Space, Text,
+};
+
+pub fn main() {
+    Example::run(Settings::default())
+}
+
+#[derive(Default)]
+struct Example {
+    scroll: scrollable::State,
+    button: button::State,
+    combo_box: combo_box::State,
+    selected_language: Language,
+}
+
+#[derive(Debug, Clone, Copy)]
+enum Message {
+    ButtonPressed,
+    LanguageSelected(Language),
+}
+
+impl Sandbox for Example {
+    type Message = Message;
+
+    fn new() -> Self {
+        Self::default()
+    }
+
+    fn title(&self) -> String {
+        String::from("Combo box - Iced")
+    }
+
+    fn update(&mut self, message: Message) {
+        match message {
+            Message::ButtonPressed => {}
+            Message::LanguageSelected(language) => {
+                self.selected_language = language;
+            }
+        }
+    }
+
+    fn view(&mut self) -> Element<Message> {
+        let combo_box = ComboBox::new(
+            &mut self.combo_box,
+            &Language::ALL[..],
+            Some(self.selected_language),
+            Message::LanguageSelected,
+        );
+
+        let button = Button::new(&mut self.button, Text::new("Press me!"))
+            .on_press(Message::ButtonPressed);
+
+        let mut content = Scrollable::new(&mut self.scroll)
+            .width(Length::Fill)
+            .align_items(Align::Center)
+            .spacing(10)
+            .push(Space::with_height(Length::Units(800)))
+            .push(Text::new("Which is your favorite language?"))
+            .push(combo_box);
+
+        content = content
+            .push(button)
+            .push(Space::with_height(Length::Units(800)));
+
+        Container::new(content)
+            .width(Length::Fill)
+            .height(Length::Fill)
+            .center_x()
+            .center_y()
+            .into()
+    }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum Language {
+    Rust,
+    Elm,
+    Ruby,
+    Haskell,
+    C,
+    Javascript,
+    Other,
+}
+
+impl Language {
+    const ALL: [Language; 7] = [
+        Language::C,
+        Language::Elm,
+        Language::Ruby,
+        Language::Haskell,
+        Language::Rust,
+        Language::Javascript,
+        Language::Other,
+    ];
+}
+
+impl Default for Language {
+    fn default() -> Language {
+        Language::Rust
+    }
+}
+
+impl std::fmt::Display for Language {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(
+            f,
+            "{}",
+            match self {
+                Language::Rust => "Rust",
+                Language::Elm => "Elm",
+                Language::Ruby => "Ruby",
+                Language::Haskell => "Haskell",
+                Language::C => "C",
+                Language::Javascript => "Javascript",
+                Language::Other => "Some other language",
+            }
+        )
+    }
+}
diff --git a/examples/custom_widget/src/main.rs b/examples/custom_widget/src/main.rs
index bcf896b0..a6068f91 100644
--- a/examples/custom_widget/src/main.rs
+++ b/examples/custom_widget/src/main.rs
@@ -25,7 +25,7 @@ mod circle {
         }
     }
 
-    impl<Message, B> Widget<Message, Renderer<B>> for Circle
+    impl<'a, Message, B> Widget<'a, Message, Renderer<B>> for Circle
     where
         B: Backend,
     {
diff --git a/examples/geometry/src/main.rs b/examples/geometry/src/main.rs
index 71ce0d8c..3795323a 100644
--- a/examples/geometry/src/main.rs
+++ b/examples/geometry/src/main.rs
@@ -27,7 +27,7 @@ mod rainbow {
         }
     }
 
-    impl<Message, B> Widget<Message, Renderer<B>> for Rainbow
+    impl<'a, Message, B> Widget<'a, Message, Renderer<B>> for Rainbow
     where
         B: Backend,
     {
diff --git a/examples/todos/src/main.rs b/examples/todos/src/main.rs
index c9cbcc69..5713a6f2 100644
--- a/examples/todos/src/main.rs
+++ b/examples/todos/src/main.rs
@@ -425,7 +425,7 @@ impl Filter {
     }
 }
 
-fn loading_message() -> Element<'static, Message> {
+fn loading_message<'a>() -> Element<'a, Message> {
     Container::new(
         Text::new("Loading...")
             .horizontal_alignment(HorizontalAlignment::Center)
@@ -437,7 +437,7 @@ fn loading_message() -> Element<'static, Message> {
     .into()
 }
 
-fn empty_message(message: &str) -> Element<'static, Message> {
+fn empty_message<'a>(message: &str) -> Element<'a, Message> {
     Container::new(
         Text::new(message)
             .width(Length::Fill)