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use webcore::value::Reference;
use webapi::event_target::{IEventTarget, EventTarget};
use webapi::window_or_worker::IWindowOrWorker;
use webapi::storage::Storage;
use webapi::location::Location;
use webcore::once::Once;
use webcore::value::Value;
/// A handle to a pending animation frame request.
#[derive(Debug)]
pub struct RequestAnimationFrameHandle(Value);
impl RequestAnimationFrameHandle {
/// Cancels an animation frame request.
///
/// [(Javascript docs)](https://developer.mozilla.org/en-US/docs/Web/API/Window/cancelAnimationFrame)
pub fn cancel(self) {
js!{
var val = @{self.0};
val.window.cancelAnimationFrame(val.request);
val.callback.drop();
};
}
}
/// The `Window` object represents a window containing a DOM document.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/Window)
pub struct Window( Reference );
impl IEventTarget for Window {}
impl IWindowOrWorker for Window {}
reference_boilerplate! {
Window,
instanceof Window
convertible to EventTarget
}
/// A global instance of [Window](struct.Window.html).
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/Window)
pub fn window() -> Window {
unsafe { js!( return window; ).into_reference_unchecked() }.unwrap()
}
impl Window {
/// The Window.alert() method displays an alert dialog
/// with the optional specified content and an OK button.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/Window/alert)
pub fn alert( &self, message: &str ) {
js!( @(no_return)
@{self}.alert( @{message} );
);
}
/// The `local_storage` property allows you to access a local [Storage](struct.Storage.html)
/// object.
///
/// It is similar to the [Window::session_storage](struct.Window.html#method.session_storage).
/// The only difference is that, while data stored in `local_storage` has
/// no expiration time, data stored in `session_storage` gets cleared when
/// the browsing session ends - that is, when the browser is closed.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/Window/localStorage)
pub fn local_storage( &self ) -> Storage {
unsafe {
js!(
return @{self.as_ref()}.localStorage;
).into_reference_unchecked().unwrap()
}
}
/// The `session_storage` property allows you to access a session [Storage](struct.Storage.html)
/// object for the current origin.
///
/// It is similar to the [Window::local_storage](struct.Window.html#method.local_storage),
/// The only difference is that, while data stored in `local_storage` has
/// no expiration time, data stored in `session_storage` gets cleared when
/// the browsing session ends.
///
/// A page session lasts for as long as the browser is open and survives over
/// page reloads and restores. Opening a page in a new tab or window will cause
/// a new session to be initiated, which differs from how session cookies work.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/Window/sessionStorage)
pub fn session_storage( &self ) -> Storage {
unsafe {
js!(
return @{self.as_ref()}.sessionStorage;
).into_reference_unchecked().unwrap()
}
}
/// Returns a [Location](struct.Location.html) object which contains
/// information about the URL of the document and provides methods
/// for changing that URL and loading another URL.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/Window/location)
pub fn location( &self ) -> Option< Location > {
unsafe {
js!(
return @{self}.location;
).into_reference_unchecked()
}
}
/// You should call this method whenever you're ready to update your animation onscreen.
/// This will request that your animation function be called before the browser performs the next repaint.
/// The number of callbacks is usually 60 times per second, but will generally match the display refresh
/// rate in most web browsers as per W3C recommendation. request_animation_frame() calls are paused in most browsers
/// when running in background tabs or hidden iframes in order to improve performance and battery life.
///
/// The callback method is passed a single argument, a f64, which indicates the current time when
/// callbacks queued by requestAnimationFrame() begin to fire. Multiple callbacks in a single frame, therefore,
/// each receive the same timestamp even though time has passed during the computation of every previous callback's workload.
/// This timestamp is a decimal number, in milliseconds, but with a minimal precision of 1ms (1000 µs).
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/window/requestAnimationFrame)
pub fn request_animation_frame< F: FnOnce(f64) + 'static>( &self, callback: F) -> RequestAnimationFrameHandle {
let values: Value = js!{
var callback = @{Once(callback)};
var request = @{self}.requestAnimationFrame(callback);
return { request: request, callback: callback, window: @{self} };
};
RequestAnimationFrameHandle(values)
}
}