diff --git a/.cargo/config.toml b/.cargo/config.toml
new file mode 100644
index 0000000..8467175
--- /dev/null
+++ b/.cargo/config.toml
@@ -0,0 +1,2 @@
+[build]
+rustflags = ["--cfg=web_sys_unstable_apis"]
diff --git a/.idea/leptos-use.iml b/.idea/leptos-use.iml
index 0935529..7e9f411 100644
--- a/.idea/leptos-use.iml
+++ b/.idea/leptos-use.iml
@@ -13,6 +13,7 @@
+
@@ -22,6 +23,7 @@
+
diff --git a/Cargo.toml b/Cargo.toml
index cedd725..2c80b9f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -30,6 +30,7 @@ features = [
"ResizeObserverSize",
"ResizeObserverEntry",
"Navigator",
+ "DomRectReadOnly",
]
[features]
diff --git a/docs/book/src/SUMMARY.md b/docs/book/src/SUMMARY.md
index 8d86c14..17971d3 100644
--- a/docs/book/src/SUMMARY.md
+++ b/docs/book/src/SUMMARY.md
@@ -8,6 +8,10 @@
- [Get Started](getting_started/get_started.md)
- [Functions](getting_started/functions.md)
+# Elements
+
+- [use_resize_observer](elements/use_resize_observer.md)
+
# Browser
- [use_event_listener](browser/use_event_listener.md)
diff --git a/docs/book/src/demo.css b/docs/book/src/demo.css
index 7adf66a..16b06a8 100644
--- a/docs/book/src/demo.css
+++ b/docs/book/src/demo.css
@@ -73,4 +73,9 @@
color: var(--text-color);
min-width: 20rem;
margin: .5rem 0;
+}
+
+.demo-container textarea {
+ background: var(--bg);
+ border: 1px solid var(--theme-popup-border);
}
\ No newline at end of file
diff --git a/docs/book/src/elements/use_resize_observer.md b/docs/book/src/elements/use_resize_observer.md
new file mode 100644
index 0000000..1fc17bc
--- /dev/null
+++ b/docs/book/src/elements/use_resize_observer.md
@@ -0,0 +1,3 @@
+# use_resize_observer
+
+
diff --git a/docs/book/src/getting_started/functions.md b/docs/book/src/getting_started/functions.md
index e3d8d25..6679ddf 100644
--- a/docs/book/src/getting_started/functions.md
+++ b/docs/book/src/getting_started/functions.md
@@ -1,5 +1,7 @@
# Functions
+
+
diff --git a/examples/use_debounce_fn/src/main.rs b/examples/use_debounce_fn/src/main.rs
index 9416a02..ab9c589 100644
--- a/examples/use_debounce_fn/src/main.rs
+++ b/examples/use_debounce_fn/src/main.rs
@@ -1,5 +1,5 @@
use leptos::*;
-use leptos_use::docs::demo_or_body;
+use leptos_use::docs::{demo_or_body, Note};
use leptos_use::{use_debounce_fn_with_options, DebounceOptions};
#[component]
@@ -22,7 +22,7 @@ fn Demo(cx: Scope) -> impl IntoView {
>
"Smash me!"
-
"Delay is set to 1000ms and max_wait is set to 5000ms for this demo."
+ "Delay is set to 1000ms and max_wait is set to 5000ms for this demo."
"Button clicked: " { click_count }
"Event handler called: " { debounced_count }
}
diff --git a/examples/use_resize_observer/.cargo/config.toml b/examples/use_resize_observer/.cargo/config.toml
new file mode 100644
index 0000000..8467175
--- /dev/null
+++ b/examples/use_resize_observer/.cargo/config.toml
@@ -0,0 +1,2 @@
+[build]
+rustflags = ["--cfg=web_sys_unstable_apis"]
diff --git a/examples/use_resize_observer/Cargo.toml b/examples/use_resize_observer/Cargo.toml
new file mode 100644
index 0000000..0078693
--- /dev/null
+++ b/examples/use_resize_observer/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "use_resize_observer"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+leptos = "0.3"
+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_resize_observer/README.md b/examples/use_resize_observer/README.md
new file mode 100644
index 0000000..a8d6387
--- /dev/null
+++ b/examples/use_resize_observer/README.md
@@ -0,0 +1,23 @@
+A simple example for `use_resize_observer`.
+
+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_resize_observer/Trunk.toml b/examples/use_resize_observer/Trunk.toml
new file mode 100644
index 0000000..3e4be08
--- /dev/null
+++ b/examples/use_resize_observer/Trunk.toml
@@ -0,0 +1,2 @@
+[build]
+public_url = "/demo/"
\ No newline at end of file
diff --git a/examples/use_resize_observer/index.html b/examples/use_resize_observer/index.html
new file mode 100644
index 0000000..ae249a6
--- /dev/null
+++ b/examples/use_resize_observer/index.html
@@ -0,0 +1,7 @@
+
+
+
+
+
+
+
diff --git a/examples/use_resize_observer/input.css b/examples/use_resize_observer/input.css
new file mode 100644
index 0000000..bd6213e
--- /dev/null
+++ b/examples/use_resize_observer/input.css
@@ -0,0 +1,3 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
\ No newline at end of file
diff --git a/examples/use_resize_observer/rust-toolchain.toml b/examples/use_resize_observer/rust-toolchain.toml
new file mode 100644
index 0000000..271800c
--- /dev/null
+++ b/examples/use_resize_observer/rust-toolchain.toml
@@ -0,0 +1,2 @@
+[toolchain]
+channel = "nightly"
\ No newline at end of file
diff --git a/examples/use_resize_observer/src/main.rs b/examples/use_resize_observer/src/main.rs
new file mode 100644
index 0000000..f1d34fe
--- /dev/null
+++ b/examples/use_resize_observer/src/main.rs
@@ -0,0 +1,32 @@
+use leptos::*;
+use leptos_use::docs::{demo_or_body, BooleanDisplay, Note};
+use leptos_use::{use_resize_observer, UseResizeReturn};
+
+#[component]
+fn Demo(cx: Scope) -> impl IntoView {
+ let el = create_node_ref(cx);
+ let (text, set_text) = create_signal(cx, "".to_string());
+
+ use_resize_observer(cx, el, move |entries, observer| {
+ let rect = entries[0].content_rect();
+ set_text(format!(
+ "width: {:.0}\nheight: {:.0}",
+ rect.width(),
+ rect.height()
+ ));
+ });
+
+ view! { cx,
+ "Resize the box to see changes"
+
+ }
+}
+
+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_resize_observer/style/output.css b/examples/use_resize_observer/style/output.css
new file mode 100644
index 0000000..45e5f83
--- /dev/null
+++ b/examples/use_resize_observer/style/output.css
@@ -0,0 +1,353 @@
+[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: ;
+}
+
+.mb-2 {
+ margin-bottom: 0.5rem;
+}
+
+.h-\[200px\] {
+ height: 200px;
+}
+
+.h-\[100px\] {
+ height: 100px;
+}
+
+.w-\[200px\] {
+ width: 200px;
+}
+
+.resize {
+ resize: both;
+}
+
+.rounded {
+ border-radius: 0.25rem;
+}
+
+.rounded-md {
+ border-radius: 0.375rem;
+}
+
+.border {
+ border-width: 1px;
+}
+
+.border-\[--theme-popup-border\] {
+ border-color: var(--theme-popup-border);
+}
+
+.p-4 {
+ padding: 1rem;
+}
+
+.text-base {
+ font-size: 1rem;
+ line-height: 1.5rem;
+}
+
+.text-lg {
+ font-size: 1.125rem;
+ line-height: 1.75rem;
+}
+
+.text-xl {
+ font-size: 1.25rem;
+ line-height: 1.75rem;
+}
+
+.text-2xl {
+ font-size: 1.5rem;
+ line-height: 2rem;
+}
+
+.leading-6 {
+ line-height: 1.5rem;
+}
+
+.leading-10 {
+ line-height: 2.5rem;
+}
+
+.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_resize_observer/tailwind.config.js b/examples/use_resize_observer/tailwind.config.js
new file mode 100644
index 0000000..bc09f5e
--- /dev/null
+++ b/examples/use_resize_observer/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/examples/use_throttle_fn/src/main.rs b/examples/use_throttle_fn/src/main.rs
index 225ed4e..6c9e043 100644
--- a/examples/use_throttle_fn/src/main.rs
+++ b/examples/use_throttle_fn/src/main.rs
@@ -1,5 +1,5 @@
use leptos::*;
-use leptos_use::docs::demo_or_body;
+use leptos_use::docs::{demo_or_body, Note};
use leptos_use::use_throttle_fn;
#[component]
@@ -18,7 +18,7 @@ fn Demo(cx: Scope) -> impl IntoView {
>
"Smash me!"
- "Delay is set to 1000ms for this demo."
+ "Delay is set to 1000ms for this demo."
"Button clicked: " { click_count }
"Event handler called: " { throttled_count }
}
diff --git a/src/docs/mod.rs b/src/docs/mod.rs
index 961c8fa..f205682 100644
--- a/src/docs/mod.rs
+++ b/src/docs/mod.rs
@@ -1,5 +1,7 @@
mod boolean_display;
mod demo;
+mod note;
pub use boolean_display::*;
pub use demo::*;
+pub use note::*;
diff --git a/src/docs/note.rs b/src/docs/note.rs
new file mode 100644
index 0000000..4430119
--- /dev/null
+++ b/src/docs/note.rs
@@ -0,0 +1,10 @@
+use leptos::*;
+
+#[component]
+pub fn Note(cx: Scope, #[prop(optional, into)] class: String, children: Children) -> impl IntoView {
+ let class = format!("note {class}");
+
+ view! { cx,
+ { children(cx) }
+ }
+}
diff --git a/src/use_resize_observer.rs b/src/use_resize_observer.rs
index 8c980c7..10cb19a 100644
--- a/src/use_resize_observer.rs
+++ b/src/use_resize_observer.rs
@@ -1,20 +1,67 @@
use crate::core::ElementMaybeSignal;
-use crate::use_supported;
-use default_struct_builder::DefaultBuilder;
+use crate::{use_supported, watch};
use leptos::*;
use std::cell::RefCell;
use std::rc::Rc;
-use wasm_bindgen::{JsCast, JsValue};
+use wasm_bindgen::prelude::*;
+/// Reports changes to the dimensions of an Element's content or the border-box.
+///
+/// > This function requires `--cfg=web_sys_unstable_apis` to be activated as
+/// [described in the wasm-bindgen guide](https://rustwasm.github.io/docs/wasm-bindgen/web-sys/unstable-apis.html).
+///
+/// Please refer to [ResizeObserver on MDN](https://developer.mozilla.org/en-US/docs/Web/API/ResizeObserver)
+/// for more details.
+///
+/// ## Demo
+///
+/// [Link to Demo](https://github.com/Synphonyte/leptos-use/tree/main/examples/use_resize_observer)
+///
+/// ## Usage
+///
+/// ```
+/// # use leptos::*;
+/// # use leptos_use::use_resize_observer;
+/// #
+/// # #[component]
+/// # fn Demo(cx: Scope) -> impl IntoView {
+/// let el = create_node_ref(cx);
+/// let (text, set_text) = create_signal(cx, "");
+///
+/// use_resize_observer(
+/// cx,
+/// el,
+/// move |entries, observer| {
+/// let rect = entries[0].content_rect();
+/// set_text(format!("width: {}\nheight: {}", rect.width(), rect.height()));
+/// },
+/// );
+/// # }
+/// ```
+pub fn use_resize_observer(
+ cx: Scope,
+ target: El, // TODO : multiple elements?
+ callback: F,
+) -> UseResizeReturn
+where
+ (Scope, El): Into>,
+ T: Into + Clone + 'static,
+ F: FnMut(Vec, web_sys::ResizeObserver) + Clone + 'static,
+{
+ use_resize_observer_with_options(cx, target, callback, web_sys::ResizeObserverOptions::new())
+}
+
+/// Version of [`use_resize_observer`] that takes a `ResizeObserverOptions`. See [`use_resize_observer`] for how to use.
pub fn use_resize_observer_with_options(
cx: Scope,
target: El, // TODO : multiple elements?
callback: F,
options: web_sys::ResizeObserverOptions,
-) where
+) -> UseResizeReturn
+where
(Scope, El): Into>,
T: Into + Clone + 'static,
- F: FnMut(Vec, web_sys::ResizeObserver) + 'static,
+ F: FnMut(Vec, web_sys::ResizeObserver) + Clone + 'static,
{
let observer: Rc>> = Rc::new(RefCell::new(None));
@@ -22,38 +69,69 @@ pub fn use_resize_observer_with_options(
let obs = Rc::clone(&observer);
let cleanup = move || {
- let observer = obs.borrow_mut();
- if let Some(o) = *observer {
+ let mut observer = obs.borrow_mut();
+ if let Some(o) = observer.as_ref() {
o.disconnect();
*observer = None;
}
};
- let target = target.into();
+ let target = (cx, target).into();
let clean = cleanup.clone();
- create_effect(cx, move |_| {
- clean();
+ let stop_watch = watch(
+ cx,
+ move || target.get(),
+ move |target, _, _| {
+ clean();
- if is_supported() {
- let obs = web_sys::ResizeObserver::new(move |entries: &js_sys::Array, observer| {
- callback(
- entries
- .to_vec()
- .into_iter()
- .map(|v| v.unchecked_into::(&options)),
- observer,
- );
- })
- .expect("failed to create ResizeObserver");
+ if is_supported() {
+ if let Some(target) = target {
+ let mut callback = callback.clone();
+ let closure = Closure::::new(
+ move |entries: js_sys::Array, observer| {
+ callback(
+ entries
+ .to_vec()
+ .into_iter()
+ .map(|v| v.unchecked_into::())
+ .collect(),
+ observer,
+ );
+ },
+ );
+ let obs = web_sys::ResizeObserver::new(closure.as_ref().unchecked_ref())
+ .expect("failed to create ResizeObserver");
- observer.observe(&target.get());
+ closure.forget();
- observer.replace(obs);
- }
- });
+ let target: web_sys::Element = target.clone().into();
+ obs.observe_with_options(&target, &options);
+
+ observer.replace(Some(obs));
+ }
+ }
+ },
+ true,
+ );
let stop = move || {
cleanup();
+ stop_watch();
+ };
+
+ on_cleanup(cx, stop.clone());
+
+ return UseResizeReturn {
+ is_supported,
+ stop: Box::new(stop),
};
}
+
+/// The return value of [`use_resize_observer`].
+pub struct UseResizeReturn {
+ /// Whether the browser supports the ResizeObserver API
+ pub is_supported: Signal,
+ /// A function to stop and detach the ResizeObserver
+ pub stop: Box,
+}