diff --git a/.idea/leptos-use.iml b/.idea/leptos-use.iml
index b07da06..c317cb1 100644
--- a/.idea/leptos-use.iml
+++ b/.idea/leptos-use.iml
@@ -40,6 +40,7 @@
+
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 889f7d1..b107560 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,13 @@
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
-## [0.4.0]- 2023-07-03
+## [Unreleased]
+
+### New Functions 🚀
+
+- `use_window_focus`
+
+## [0.4.0] - 2023-07-03
### Braking Changes ðŸ›
- Required `leptos` version is now 0.4
diff --git a/docs/book/src/SUMMARY.md b/docs/book/src/SUMMARY.md
index a369350..cf5f383 100644
--- a/docs/book/src/SUMMARY.md
+++ b/docs/book/src/SUMMARY.md
@@ -19,6 +19,7 @@
- [use_intersection_observer](elements/use_intersection_observer.md)
- [use_mutation_observer](elements/use_mutation_observer.md)
- [use_resize_observer](elements/use_resize_observer.md)
+- [use_window_focus](elements/use_window_focus.md)
# Browser
diff --git a/docs/book/src/elements/use_window_focus.md b/docs/book/src/elements/use_window_focus.md
new file mode 100644
index 0000000..3aa9063
--- /dev/null
+++ b/docs/book/src/elements/use_window_focus.md
@@ -0,0 +1,3 @@
+# use_window_focus
+
+
diff --git a/examples/Cargo.toml b/examples/Cargo.toml
index 5ec52d0..d17ba25 100644
--- a/examples/Cargo.toml
+++ b/examples/Cargo.toml
@@ -28,6 +28,7 @@ members = [
"use_scroll",
"use_storage",
"use_throttle_fn",
+ "use_window_focus",
"watch_debounced",
"watch_pausable",
"watch_throttled",
diff --git a/examples/use_window_focus/Cargo.toml b/examples/use_window_focus/Cargo.toml
new file mode 100644
index 0000000..f39eee7
--- /dev/null
+++ b/examples/use_window_focus/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "use_window_focus"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+leptos = { version = "0.4", features = ["nightly", "csr"] }
+console_error_panic_hook = "0.1"
+console_log = "1"
+log = "0.4"
+leptos-use = { path = "../..", features = ["docs"] }
+web-sys = "0.3"
+
+[dev-dependencies]
+wasm-bindgen = "0.2"
+wasm-bindgen-test = "0.3.0"
diff --git a/examples/use_window_focus/README.md b/examples/use_window_focus/README.md
new file mode 100644
index 0000000..946ca56
--- /dev/null
+++ b/examples/use_window_focus/README.md
@@ -0,0 +1,23 @@
+A simple example for `use_window_focus`.
+
+If you don't have it installed already, install [Trunk](https://trunkrs.dev/) and [Tailwind](https://tailwindcss.com/docs/installation)
+as well as the nightly toolchain for Rust and the wasm32-unknown-unknown target:
+
+```bash
+cargo install trunk
+npm install -D tailwindcss @tailwindcss/forms
+rustup toolchain install nightly
+rustup target add wasm32-unknown-unknown
+```
+
+Then, open two terminals. In the first one, run:
+
+```
+npx tailwindcss -i ./input.css -o ./style/output.css --watch
+```
+
+In the second one, run:
+
+```bash
+trunk serve --open
+```
\ No newline at end of file
diff --git a/examples/use_window_focus/Trunk.toml b/examples/use_window_focus/Trunk.toml
new file mode 100644
index 0000000..3e4be08
--- /dev/null
+++ b/examples/use_window_focus/Trunk.toml
@@ -0,0 +1,2 @@
+[build]
+public_url = "/demo/"
\ No newline at end of file
diff --git a/examples/use_window_focus/index.html b/examples/use_window_focus/index.html
new file mode 100644
index 0000000..ae249a6
--- /dev/null
+++ b/examples/use_window_focus/index.html
@@ -0,0 +1,7 @@
+
+
+
+
+
+
+
diff --git a/examples/use_window_focus/input.css b/examples/use_window_focus/input.css
new file mode 100644
index 0000000..bd6213e
--- /dev/null
+++ b/examples/use_window_focus/input.css
@@ -0,0 +1,3 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
\ No newline at end of file
diff --git a/examples/use_window_focus/rust-toolchain.toml b/examples/use_window_focus/rust-toolchain.toml
new file mode 100644
index 0000000..271800c
--- /dev/null
+++ b/examples/use_window_focus/rust-toolchain.toml
@@ -0,0 +1,2 @@
+[toolchain]
+channel = "nightly"
\ No newline at end of file
diff --git a/examples/use_window_focus/src/main.rs b/examples/use_window_focus/src/main.rs
new file mode 100644
index 0000000..cf971f7
--- /dev/null
+++ b/examples/use_window_focus/src/main.rs
@@ -0,0 +1,33 @@
+use leptos::*;
+use leptos_use::docs::demo_or_body;
+use leptos_use::{use_window_focus, watch};
+
+#[component]
+fn Demo(cx: Scope) -> impl IntoView {
+ let start_message = "💡 Click somewhere outside of the document to unfocus.";
+
+ let (message, set_message) = create_signal(cx, start_message);
+
+ let focused = use_window_focus(cx);
+
+ let _ = watch(cx, focused, move |focused, _, _| {
+ if *focused {
+ set_message(start_message);
+ } else {
+ set_message("ℹ Tab is unfocused")
+ }
+ });
+
+ view! { cx,
+ { message }
+ }
+}
+
+fn main() {
+ _ = console_log::init_with_level(log::Level::Debug);
+ console_error_panic_hook::set_once();
+
+ mount_to(demo_or_body(), |cx| {
+ view! { cx, }
+ })
+}
diff --git a/examples/use_window_focus/style/output.css b/examples/use_window_focus/style/output.css
new file mode 100644
index 0000000..ab5191f
--- /dev/null
+++ b/examples/use_window_focus/style/output.css
@@ -0,0 +1,289 @@
+[type='text'],[type='email'],[type='url'],[type='password'],[type='number'],[type='date'],[type='datetime-local'],[type='month'],[type='search'],[type='tel'],[type='time'],[type='week'],[multiple],textarea,select {
+ -webkit-appearance: none;
+ -moz-appearance: none;
+ appearance: none;
+ background-color: #fff;
+ border-color: #6b7280;
+ border-width: 1px;
+ border-radius: 0px;
+ padding-top: 0.5rem;
+ padding-right: 0.75rem;
+ padding-bottom: 0.5rem;
+ padding-left: 0.75rem;
+ font-size: 1rem;
+ line-height: 1.5rem;
+ --tw-shadow: 0 0 #0000;
+}
+
+[type='text']:focus, [type='email']:focus, [type='url']:focus, [type='password']:focus, [type='number']:focus, [type='date']:focus, [type='datetime-local']:focus, [type='month']:focus, [type='search']:focus, [type='tel']:focus, [type='time']:focus, [type='week']:focus, [multiple]:focus, textarea:focus, select:focus {
+ outline: 2px solid transparent;
+ outline-offset: 2px;
+ --tw-ring-inset: var(--tw-empty,/*!*/ /*!*/);
+ --tw-ring-offset-width: 0px;
+ --tw-ring-offset-color: #fff;
+ --tw-ring-color: #2563eb;
+ --tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);
+ --tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(1px + var(--tw-ring-offset-width)) var(--tw-ring-color);
+ box-shadow: var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow);
+ border-color: #2563eb;
+}
+
+input::-moz-placeholder, textarea::-moz-placeholder {
+ color: #6b7280;
+ opacity: 1;
+}
+
+input::placeholder,textarea::placeholder {
+ color: #6b7280;
+ opacity: 1;
+}
+
+::-webkit-datetime-edit-fields-wrapper {
+ padding: 0;
+}
+
+::-webkit-date-and-time-value {
+ min-height: 1.5em;
+}
+
+::-webkit-datetime-edit,::-webkit-datetime-edit-year-field,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute-field,::-webkit-datetime-edit-second-field,::-webkit-datetime-edit-millisecond-field,::-webkit-datetime-edit-meridiem-field {
+ padding-top: 0;
+ padding-bottom: 0;
+}
+
+select {
+ background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
+ background-position: right 0.5rem center;
+ background-repeat: no-repeat;
+ background-size: 1.5em 1.5em;
+ padding-right: 2.5rem;
+ -webkit-print-color-adjust: exact;
+ print-color-adjust: exact;
+}
+
+[multiple] {
+ background-image: initial;
+ background-position: initial;
+ background-repeat: unset;
+ background-size: initial;
+ padding-right: 0.75rem;
+ -webkit-print-color-adjust: unset;
+ print-color-adjust: unset;
+}
+
+[type='checkbox'],[type='radio'] {
+ -webkit-appearance: none;
+ -moz-appearance: none;
+ appearance: none;
+ padding: 0;
+ -webkit-print-color-adjust: exact;
+ print-color-adjust: exact;
+ display: inline-block;
+ vertical-align: middle;
+ background-origin: border-box;
+ -webkit-user-select: none;
+ -moz-user-select: none;
+ user-select: none;
+ flex-shrink: 0;
+ height: 1rem;
+ width: 1rem;
+ color: #2563eb;
+ background-color: #fff;
+ border-color: #6b7280;
+ border-width: 1px;
+ --tw-shadow: 0 0 #0000;
+}
+
+[type='checkbox'] {
+ border-radius: 0px;
+}
+
+[type='radio'] {
+ border-radius: 100%;
+}
+
+[type='checkbox']:focus,[type='radio']:focus {
+ outline: 2px solid transparent;
+ outline-offset: 2px;
+ --tw-ring-inset: var(--tw-empty,/*!*/ /*!*/);
+ --tw-ring-offset-width: 2px;
+ --tw-ring-offset-color: #fff;
+ --tw-ring-color: #2563eb;
+ --tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);
+ --tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(2px + var(--tw-ring-offset-width)) var(--tw-ring-color);
+ box-shadow: var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow);
+}
+
+[type='checkbox']:checked,[type='radio']:checked {
+ border-color: transparent;
+ background-color: currentColor;
+ background-size: 100% 100%;
+ background-position: center;
+ background-repeat: no-repeat;
+}
+
+[type='checkbox']:checked {
+ background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 16 16' fill='white' xmlns='http://www.w3.org/2000/svg'%3e%3cpath d='M12.207 4.793a1 1 0 010 1.414l-5 5a1 1 0 01-1.414 0l-2-2a1 1 0 011.414-1.414L6.5 9.086l4.293-4.293a1 1 0 011.414 0z'/%3e%3c/svg%3e");
+}
+
+[type='radio']:checked {
+ background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 16 16' fill='white' xmlns='http://www.w3.org/2000/svg'%3e%3ccircle cx='8' cy='8' r='3'/%3e%3c/svg%3e");
+}
+
+[type='checkbox']:checked:hover,[type='checkbox']:checked:focus,[type='radio']:checked:hover,[type='radio']:checked:focus {
+ border-color: transparent;
+ background-color: currentColor;
+}
+
+[type='checkbox']:indeterminate {
+ background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 16 16'%3e%3cpath stroke='white' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M4 8h8'/%3e%3c/svg%3e");
+ border-color: transparent;
+ background-color: currentColor;
+ background-size: 100% 100%;
+ background-position: center;
+ background-repeat: no-repeat;
+}
+
+[type='checkbox']:indeterminate:hover,[type='checkbox']:indeterminate:focus {
+ border-color: transparent;
+ background-color: currentColor;
+}
+
+[type='file'] {
+ background: unset;
+ border-color: inherit;
+ border-width: 0;
+ border-radius: 0;
+ padding: 0;
+ font-size: unset;
+ line-height: inherit;
+}
+
+[type='file']:focus {
+ outline: 1px solid ButtonText;
+ outline: 1px auto -webkit-focus-ring-color;
+}
+
+*, ::before, ::after {
+ --tw-border-spacing-x: 0;
+ --tw-border-spacing-y: 0;
+ --tw-translate-x: 0;
+ --tw-translate-y: 0;
+ --tw-rotate: 0;
+ --tw-skew-x: 0;
+ --tw-skew-y: 0;
+ --tw-scale-x: 1;
+ --tw-scale-y: 1;
+ --tw-pan-x: ;
+ --tw-pan-y: ;
+ --tw-pinch-zoom: ;
+ --tw-scroll-snap-strictness: proximity;
+ --tw-gradient-from-position: ;
+ --tw-gradient-via-position: ;
+ --tw-gradient-to-position: ;
+ --tw-ordinal: ;
+ --tw-slashed-zero: ;
+ --tw-numeric-figure: ;
+ --tw-numeric-spacing: ;
+ --tw-numeric-fraction: ;
+ --tw-ring-inset: ;
+ --tw-ring-offset-width: 0px;
+ --tw-ring-offset-color: #fff;
+ --tw-ring-color: rgb(59 130 246 / 0.5);
+ --tw-ring-offset-shadow: 0 0 #0000;
+ --tw-ring-shadow: 0 0 #0000;
+ --tw-shadow: 0 0 #0000;
+ --tw-shadow-colored: 0 0 #0000;
+ --tw-blur: ;
+ --tw-brightness: ;
+ --tw-contrast: ;
+ --tw-grayscale: ;
+ --tw-hue-rotate: ;
+ --tw-invert: ;
+ --tw-saturate: ;
+ --tw-sepia: ;
+ --tw-drop-shadow: ;
+ --tw-backdrop-blur: ;
+ --tw-backdrop-brightness: ;
+ --tw-backdrop-contrast: ;
+ --tw-backdrop-grayscale: ;
+ --tw-backdrop-hue-rotate: ;
+ --tw-backdrop-invert: ;
+ --tw-backdrop-opacity: ;
+ --tw-backdrop-saturate: ;
+ --tw-backdrop-sepia: ;
+}
+
+::backdrop {
+ --tw-border-spacing-x: 0;
+ --tw-border-spacing-y: 0;
+ --tw-translate-x: 0;
+ --tw-translate-y: 0;
+ --tw-rotate: 0;
+ --tw-skew-x: 0;
+ --tw-skew-y: 0;
+ --tw-scale-x: 1;
+ --tw-scale-y: 1;
+ --tw-pan-x: ;
+ --tw-pan-y: ;
+ --tw-pinch-zoom: ;
+ --tw-scroll-snap-strictness: proximity;
+ --tw-gradient-from-position: ;
+ --tw-gradient-via-position: ;
+ --tw-gradient-to-position: ;
+ --tw-ordinal: ;
+ --tw-slashed-zero: ;
+ --tw-numeric-figure: ;
+ --tw-numeric-spacing: ;
+ --tw-numeric-fraction: ;
+ --tw-ring-inset: ;
+ --tw-ring-offset-width: 0px;
+ --tw-ring-offset-color: #fff;
+ --tw-ring-color: rgb(59 130 246 / 0.5);
+ --tw-ring-offset-shadow: 0 0 #0000;
+ --tw-ring-shadow: 0 0 #0000;
+ --tw-shadow: 0 0 #0000;
+ --tw-shadow-colored: 0 0 #0000;
+ --tw-blur: ;
+ --tw-brightness: ;
+ --tw-contrast: ;
+ --tw-grayscale: ;
+ --tw-hue-rotate: ;
+ --tw-invert: ;
+ --tw-saturate: ;
+ --tw-sepia: ;
+ --tw-drop-shadow: ;
+ --tw-backdrop-blur: ;
+ --tw-backdrop-brightness: ;
+ --tw-backdrop-contrast: ;
+ --tw-backdrop-grayscale: ;
+ --tw-backdrop-hue-rotate: ;
+ --tw-backdrop-invert: ;
+ --tw-backdrop-opacity: ;
+ --tw-backdrop-saturate: ;
+ --tw-backdrop-sepia: ;
+}
+
+.block {
+ display: block;
+}
+
+.text-\[--brand-color\] {
+ color: var(--brand-color);
+}
+
+.text-green-600 {
+ --tw-text-opacity: 1;
+ color: rgb(22 163 74 / var(--tw-text-opacity));
+}
+
+.opacity-75 {
+ opacity: 0.75;
+}
+
+@media (prefers-color-scheme: dark) {
+ .dark\:text-green-500 {
+ --tw-text-opacity: 1;
+ color: rgb(34 197 94 / var(--tw-text-opacity));
+ }
+}
\ No newline at end of file
diff --git a/examples/use_window_focus/tailwind.config.js b/examples/use_window_focus/tailwind.config.js
new file mode 100644
index 0000000..bc09f5e
--- /dev/null
+++ b/examples/use_window_focus/tailwind.config.js
@@ -0,0 +1,15 @@
+/** @type {import('tailwindcss').Config} */
+module.exports = {
+ content: {
+ files: ["*.html", "./src/**/*.rs", "../../src/docs/**/*.rs"],
+ },
+ theme: {
+ extend: {},
+ },
+ corePlugins: {
+ preflight: false,
+ },
+ plugins: [
+ require('@tailwindcss/forms'),
+ ],
+}
\ No newline at end of file
diff --git a/src/lib.rs b/src/lib.rs
index 9d2d5d0..5827135 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -21,6 +21,7 @@ pub use use_element_size::*;
pub use use_resize_observer::*;
mod on_click_outside;
+mod use_window_focus;
mod use_active_element;
mod use_breakpoints;
mod use_color_mode;
@@ -49,6 +50,7 @@ mod watch_throttled;
mod whenever;
pub use on_click_outside::*;
+pub use use_window_focus::*;
pub use use_active_element::*;
pub use use_breakpoints::*;
pub use use_color_mode::*;
diff --git a/src/use_window_focus.rs b/src/use_window_focus.rs
new file mode 100644
index 0000000..93a449b
--- /dev/null
+++ b/src/use_window_focus.rs
@@ -0,0 +1,32 @@
+use crate::use_event_listener;
+use leptos::ev::{blur, focus};
+use leptos::*;
+
+/// Reactively track window focus
+/// with `window.onfocus` and `window.onblur` events.
+///
+/// ## Demo
+///
+/// [Link to Demo](https://github.com/Synphonyte/leptos-use/tree/main/examples/use_window_focus)
+///
+/// ## Usage
+///
+/// ```
+/// # use leptos::*;
+/// # use leptos_use::use_window_focus;
+/// #
+/// # #[component]
+/// # fn Demo(cx: Scope) -> impl IntoView {
+/// let focused = use_window_focus(cx);
+/// #
+/// # view! { cx, }
+/// # }
+/// ```
+pub fn use_window_focus(cx: Scope) -> Signal {
+ let (focused, set_focused) = create_signal(cx, document().has_focus().unwrap_or_default());
+
+ let _ = use_event_listener(cx, window(), blur, move |_| set_focused.set(false));
+ let _ = use_event_listener(cx, window(), focus, move |_| set_focused.set(true));
+
+ focused.into()
+}
diff --git a/template/examples/{{ function_name }}/Cargo.ffizer.hbs.toml b/template/examples/{{ function_name }}/Cargo.ffizer.hbs.toml
index 248c227..5af1f96 100644
--- a/template/examples/{{ function_name }}/Cargo.ffizer.hbs.toml
+++ b/template/examples/{{ function_name }}/Cargo.ffizer.hbs.toml
@@ -4,7 +4,7 @@ version = "0.1.0"
edition = "2021"
[dependencies]
-leptos = { version = "0.4", features = ["nightly"] }
+leptos = { version = "0.4", features = ["nightly", "csr"] }
console_error_panic_hook = "0.1"
console_log = "1"
log = "0.4"