added use_drop_zone. fixes #13

This commit is contained in:
Maccesch 2023-07-15 00:55:02 +01:00
parent 08e937fbea
commit b5b65b8eea
18 changed files with 685 additions and 1 deletions

1
.idea/leptos-use.iml generated
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@ -47,6 +47,7 @@
<sourceFolder url="file://$MODULE_DIR$/examples/use_intl_number_format/src" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/examples/use_websocket/src" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/testtest/src" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/examples/use_drop_zone/src" isTestSource="false" />
<excludeFolder url="file://$MODULE_DIR$/examples/use_event_listener/target" />
<excludeFolder url="file://$MODULE_DIR$/target" />
<excludeFolder url="file://$MODULE_DIR$/docs/book/book" />

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@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
### New Functions 🚀
- `use_drop_zone`
- `use_websocket` (thanks @sectore)
- `use_intl_number_format`

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@ -33,7 +33,11 @@ features = [
"CustomEvent",
"CustomEventInit",
"DomRectReadOnly",
"DataTransfer",
"DragEvent",
"Element",
"File",
"FileList",
"HtmlElement",
"HtmlLinkElement",
"HtmlStyleElement",

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@ -16,6 +16,7 @@
- [use_active_element](elements/use_active_element.md)
- [use_document_visibility](elements/use_document_visibility.md)
- [use_drop_zone](elements/use_drop_zone.md)
- [use_element_size](elements/use_element_size.md)
- [use_element_visibility](elements/use_element_visibility.md)
- [use_intersection_observer](elements/use_intersection_observer.md)

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@ -0,0 +1,3 @@
# use_drop_zone
<!-- cmdrun python3 ../extract_doc_comment.py use_drop_zone -->

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@ -12,16 +12,17 @@ members = [
"use_cycle_list",
"use_debounce_fn",
"use_document_visibility",
"use_drop_zone",
"use_element_hover",
"use_element_size",
"use_element_visibility",
"use_event_listener",
"use_intl_number_format",
"use_favicon",
"use_floor",
"use_intersection_observer",
"use_interval",
"use_interval_fn",
"use_intl_number_format",
"use_media_query",
"use_mouse",
"use_mutation_observer",

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@ -0,0 +1,16 @@
[package]
name = "use_drop_zone"
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"

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@ -0,0 +1,23 @@
A simple example for `use_drop_zone`.
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
```

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@ -0,0 +1,2 @@
[build]
public_url = "/demo/"

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@ -0,0 +1,27 @@
<?xml version="1.0" encoding="UTF-8" standalone="no"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg width="100%" height="100%" viewBox="0 0 32 32" version="1.1" xmlns="http://www.w3.org/2000/svg"
style="fill-rule:evenodd;clip-rule:evenodd;stroke-linejoin:round;stroke-miterlimit:2;">
<style>
path.black {
fill: #1e1838;
}
@media (prefers-color-scheme: dark) {
path.black {
fill: white;
}
}
</style>
<path d="M16.114,22.343c-1.714,-0 -3.2,-0.914 -3.885,-2.514c-0.458,-1.029 -0.572,-2.172 -0.229,-3.315c0.343,-1.143 1.143,-1.943 2.171,-2.514c0.572,-0.343 1.258,-0.457 1.829,-0.457c1.714,-0 3.2,0.914 3.886,2.514c1.028,2.172 0.114,4.8 -2.057,5.829c-0.458,0.228 -1.029,0.457 -1.715,0.457Z"
style="fill:#e1393a;fill-rule:nonzero;"/>
<path d="M16.114,15.943c0.572,-0 1.486,0.343 1.829,1.143c0.343,0.685 0.228,1.257 0.114,1.6c-0.114,0.343 -0.343,0.8 -1.028,1.143c-0.229,0.114 -0.572,0.228 -0.915,0.228c-0.571,0 -1.485,-0.343 -1.828,-1.143c-0.457,-1.028 -0.115,-2.285 0.914,-2.743c0.343,-0.228 0.571,-0.228 0.914,-0.228Zm0,-4.572c-0.914,0 -1.943,0.229 -2.857,0.686c-3.314,1.486 -4.686,5.486 -3.086,8.8c1.143,2.4 3.543,3.772 5.943,3.772c0.915,-0 1.943,-0.229 2.857,-0.686c3.315,-1.6 4.686,-5.6 3.086,-8.8c-1.143,-2.4 -3.428,-3.772 -5.943,-3.772Z"
style="fill:#e1393a;fill-rule:nonzero;"/>
<path d="M16.114,6.114c-0.8,0 -1.485,-0.457 -1.828,-1.143c-0.457,-1.028 -0,-2.171 0.914,-2.628c0.229,-0.114 0.571,-0.229 0.914,-0.229c0.8,0 1.486,0.457 1.829,1.143c0.457,1.029 0.114,2.172 -0.914,2.629c-0.343,0.114 -0.572,0.228 -0.915,0.228Z"
style="fill:#e1393a;fill-rule:nonzero;"/>
<path d="M16.114,3.829c0,-0 0.229,-0 0.229,0.114c0.114,0.114 -0,0.343 -0.114,0.343l-0.115,-0c0,-0 -0.228,-0 -0.228,-0.115c-0.115,-0.114 -0,-0.342 0.114,-0.342l0.114,-0Zm0,-3.429c-0.571,-0 -1.143,0.114 -1.6,0.343c-1.828,0.914 -2.628,3.086 -1.714,5.028c0.686,1.372 1.943,2.058 3.314,2.058c0.572,-0 1.143,-0.115 1.6,-0.343c1.829,-0.915 2.629,-3.086 1.715,-4.915c-0.572,-1.371 -1.943,-2.171 -3.315,-2.171Z"
style="fill:#e1393a;fill-rule:nonzero;"/>
<path class="black"
d="M27.314,10.914c0,-0.114 -0.114,-0.343 -0.343,-0.571c0,-0.114 -0.114,-0.229 -0.114,-0.229c-0.457,-0.8 -1.143,-1.943 -1.143,-1.943l-2.514,1.486l1.486,2.629c1.943,3.657 2.057,7.657 0.571,10.857c-1.6,3.428 -5.028,5.371 -9.143,5.371c-4.228,0 -7.543,-1.943 -9.143,-5.371c-1.6,-3.2 -1.371,-7.2 0.572,-10.857l1.6,-2.629l-2.743,-1.486c-0,0 -0.686,1.029 -1.143,1.943c-0.114,0 -0.228,0.115 -0.228,0.229c-0.115,0.228 -0.229,0.457 -0.343,0.571c-2.286,4.572 -2.515,9.486 -0.457,13.715c2.171,4.457 6.4,6.971 11.771,6.971c5.257,0 9.6,-2.514 11.771,-6.971c2.058,-4.229 1.829,-9.258 -0.457,-13.715Z"
style="fill-rule:nonzero;"/>
</svg>

After

Width:  |  Height:  |  Size: 2.8 KiB

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@ -0,0 +1,8 @@
<!DOCTYPE html>
<html>
<head>
<link data-trunk rel="css" href="style/output.css">
<link data-trunk rel="copy-dir" href="img">
</head>
<body></body>
</html>

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@ -0,0 +1,3 @@
@tailwind base;
@tailwind components;
@tailwind utilities;

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@ -0,0 +1,2 @@
[toolchain]
channel = "nightly"

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@ -0,0 +1,63 @@
use leptos::html::Div;
use leptos::*;
use leptos_use::docs::{demo_or_body, BooleanDisplay};
use leptos_use::{use_drop_zone_with_options, UseDropZoneOptions, UseDropZoneReturn};
#[component]
fn Demo(cx: Scope) -> impl IntoView {
let (dropped, set_dropped) = create_signal(cx, false);
let drop_zone_el = create_node_ref::<Div>(cx);
let UseDropZoneReturn {
is_over_drop_zone,
files,
} = use_drop_zone_with_options(
cx,
drop_zone_el,
UseDropZoneOptions::default()
.on_drop(move |_| set_dropped(true))
.on_enter(move |_| set_dropped(false)),
);
view! { cx,
<div class="flex">
<div class="w-full h-auto relative">
<p>Drop files into dropZone</p>
<img width="64" src="use_drop_zone/demo/img/leptos-use-logo.svg" alt="Drop me"/>
<div
node_ref=drop_zone_el
class="flex flex-col w-full min-h-[200px] h-auto bg-gray-400/10 justify-center items-center pt-6"
>
<div>
is_over_drop_zone: <BooleanDisplay value=is_over_drop_zone />
</div>
<div>
dropped: <BooleanDisplay value=dropped />
</div>
<div class="flex flex-wrap justify-center items-center">
<For each=files key=|f| f.name() view=move |cx, file| {
view! { cx,
<div class="w-200px bg-black-200/10 ma-2 pa-6">
<p>Name: {file.name()}</p>
<p>Size: {file.size()}</p>
<p>Type: {file.type_()}</p>
<p>Last modified: {file.last_modified()}</p>
</div>
}
} />
</div>
</div>
</div>
</div>
}
}
fn main() {
_ = console_log::init_with_level(log::Level::Debug);
console_error_panic_hook::set_once();
mount_to(demo_or_body(), |cx| {
view! { cx, <Demo /> }
})
}

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@ -0,0 +1,333 @@
[type='text'],input:where(:not([type])),[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, input:where(:not([type])):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],[size]:where(select:not([size="1"])) {
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: ;
}
.static {
position: static;
}
.relative {
position: relative;
}
.flex {
display: flex;
}
.h-auto {
height: auto;
}
.min-h-\[200px\] {
min-height: 200px;
}
.w-full {
width: 100%;
}
.flex-col {
flex-direction: column;
}
.flex-wrap {
flex-wrap: wrap;
}
.items-center {
align-items: center;
}
.justify-center {
justify-content: center;
}
.bg-gray-400\/10 {
background-color: rgb(156 163 175 / 0.1);
}
.pt-6 {
padding-top: 1.5rem;
}
.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));
}
}

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@ -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'),
],
}

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@ -28,6 +28,7 @@ mod use_css_var;
mod use_cycle_list;
mod use_debounce_fn;
mod use_document_visibility;
mod use_drop_zone;
mod use_element_hover;
mod use_element_visibility;
mod use_event_listener;
@ -61,6 +62,7 @@ pub use use_css_var::*;
pub use use_cycle_list::*;
pub use use_debounce_fn::*;
pub use use_document_visibility::*;
pub use use_drop_zone::*;
pub use use_element_hover::*;
pub use use_element_visibility::*;
pub use use_event_listener::*;

179
src/use_drop_zone.rs Normal file
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@ -0,0 +1,179 @@
use crate::core::ElementMaybeSignal;
use crate::use_event_listener;
use crate::utils::CloneableFnMutWithArg;
use default_struct_builder::DefaultBuilder;
use leptos::ev::{dragenter, dragleave, dragover, drop};
use leptos::*;
/// Create a zone where files can be dropped.
///
/// ## Demo
///
/// [Link to Demo](https://github.com/Synphonyte/leptos-use/tree/main/examples/use_drop_zone)
///
/// ## Usage
///
/// ```
/// # use leptos::*;
/// # use leptos::html::Div;
/// # use leptos_use::{use_drop_zone_with_options, UseDropZoneOptions, UseDropZoneReturn};
/// #
/// # #[component]
/// # fn Demo(cx: Scope) -> impl IntoView {
/// let drop_zone_el = create_node_ref::<Div>(cx);
///
/// let on_drop = |event| {
/// // called when files are dropped on zone
/// };
///
/// let UseDropZoneReturn {
/// is_over_drop_zone,
/// ..
/// } = use_drop_zone_with_options(
/// cx,
/// drop_zone_el,
/// UseDropZoneOptions::default().on_drop(on_drop)
/// );
///
/// view! { cx,
/// <div node_ref=drop_zone_el>
/// "Drop files here"
/// </div>
/// }
/// # }
/// ```
///
/// ## Server-Side Rendering
///
/// Please refer to ["Functions with Target Elements"](https://leptos-use.rs/server_side_rendering.html#functions-with-target-elements)
pub fn use_drop_zone<El, T>(cx: Scope, target: El) -> UseDropZoneReturn
where
El: Clone,
(Scope, El): Into<ElementMaybeSignal<T, web_sys::EventTarget>>,
T: Into<web_sys::EventTarget> + Clone + 'static,
{
use_drop_zone_with_options(cx, target, UseDropZoneOptions::default())
}
/// Version of [`use_drop_zone`] that takes a `UseDropZoneOptions`. See [`use_drop_zone`] for how to use.
pub fn use_drop_zone_with_options<El, T>(
cx: Scope,
target: El,
options: UseDropZoneOptions,
) -> UseDropZoneReturn
where
El: Clone,
(Scope, El): Into<ElementMaybeSignal<T, web_sys::EventTarget>>,
T: Into<web_sys::EventTarget> + Clone + 'static,
{
let UseDropZoneOptions {
mut on_drop,
mut on_enter,
mut on_leave,
mut on_over,
} = options;
let (is_over_drop_zone, set_over_drop_zone) = create_signal(cx, false);
let (files, set_files) = create_signal(cx, Vec::<web_sys::File>::new());
let counter = store_value(cx, 0_usize);
let update_files = move |event: &web_sys::DragEvent| {
if let Some(data_transfer) = event.data_transfer() {
let files: Vec<web_sys::File> = data_transfer
.files()
.map(|f| js_sys::Array::from(&f).to_vec())
.unwrap_or_default()
.into_iter()
.map(web_sys::File::from)
.collect();
set_files.update(move |f| *f = files);
}
};
let _ = use_event_listener(cx, target.clone(), dragenter, move |event| {
event.prevent_default();
counter.update_value(|counter| *counter += 1);
set_over_drop_zone.set(true);
update_files(&event);
on_enter(UseDropZoneEvent {
files: files.get(),
event,
});
});
let _ = use_event_listener(cx, target.clone(), dragover, move |event| {
event.prevent_default();
update_files(&event);
on_over(UseDropZoneEvent {
files: files.get(),
event,
});
});
let _ = use_event_listener(cx, target.clone(), dragleave, move |event| {
event.prevent_default();
counter.update_value(|counter| *counter -= 1);
if counter.get_value() == 0 {
set_over_drop_zone.set(false);
}
update_files(&event);
on_leave(UseDropZoneEvent {
files: files.get(),
event,
});
});
let _ = use_event_listener(cx, target, drop, move |event| {
event.prevent_default();
counter.update_value(|counter| *counter = 0);
set_over_drop_zone.set(false);
update_files(&event);
on_drop(UseDropZoneEvent {
files: files.get(),
event,
});
});
UseDropZoneReturn {
files: files.into(),
is_over_drop_zone: is_over_drop_zone.into(),
}
}
/// Options for [`use_drop_zone_with_options`].
#[derive(DefaultBuilder, Default, Clone, Debug)]
pub struct UseDropZoneOptions {
/// Event handler for the [`drop`](https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/drop_event) event
on_drop: Box<dyn CloneableFnMutWithArg<UseDropZoneEvent>>,
/// Event handler for the [`dragenter`](https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/dragenter_event) event
on_enter: Box<dyn CloneableFnMutWithArg<UseDropZoneEvent>>,
/// Event handler for the [`dragleave`](https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/dragleave_event) event
on_leave: Box<dyn CloneableFnMutWithArg<UseDropZoneEvent>>,
/// Event handler for the [`dragover`](https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/dragover_event) event
on_over: Box<dyn CloneableFnMutWithArg<UseDropZoneEvent>>,
}
/// Event passed as argument to the event handler functions of `UseDropZoneOptions`.
#[derive(Clone, Debug)]
pub struct UseDropZoneEvent {
/// Files being handled
pub files: Vec<web_sys::File>,
/// The original drag event
pub event: web_sys::DragEvent,
}
/// Return type of [`use_drop_zone`].
pub struct UseDropZoneReturn {
/// Files being handled
pub files: Signal<Vec<web_sys::File>>,
/// Whether the files (dragged by the pointer) are over the drop zone
pub is_over_drop_zone: Signal<bool>,
}