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use webcore::value::{Value, Reference};
use webcore::try_from::TryInto;
use webapi::cross_origin_setting::CrossOriginSetting;
use webapi::event_target::{IEventTarget, EventTarget};
use webapi::node::{INode, Node};
use webapi::element::{IElement, Element};
use webapi::html_element::{IHtmlElement, HtmlElement};
/// The HTML image element is used to manipulate the layout and presentation of
/// `<img>` elements.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement)
pub struct ImageElement( Reference );
impl IEventTarget for ImageElement {}
impl INode for ImageElement {}
impl IElement for ImageElement {}
impl IHtmlElement for ImageElement {}
reference_boilerplate! {
ImageElement,
instanceof HTMLImageElement
convertible to EventTarget
convertible to Node
convertible to Element
convertible to HtmlElement
}
impl ImageElement {
/// Constructs a new ImageElement.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/Image)
pub fn new() -> ImageElement {
js! (
return new Image();
).try_into().unwrap()
}
/// Constructs a new ImageElement with the given width and height.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/Image)
pub fn with_size(width: u32, height: u32) -> ImageElement {
js! (
return new Image(@{width}, @{height});
).try_into().unwrap()
}
/// Returns the HTML `alt` attribute, representing the fallback context for the image.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/alt)
#[inline]
pub fn alt( &self ) -> String {
js! (
return @{self}.alt;
).try_into().unwrap()
}
/// Sets the HTML `alt` attribute, representing the fallback context for the image.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/alt)
pub fn set_alt( &self, value: &str ) {
js! { @(no_return)
@{self}.alt = @{value};
}
}
/// Returns true if the browser has finished fetching the image, whether
/// successful or not. It also return true if the image has no src value.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/complete)
pub fn complete( &self ) -> bool {
js! (
return @{self}.complete;
).try_into().unwrap()
}
/// Returns the Cross-Origin Resource Sharing (CORS) setting for the image.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/crossOrigin)
pub fn cross_origin( &self ) -> CrossOriginSetting {
match js!(
return @{self}.crossOrigin;
) {
Value::Null => CrossOriginSetting::None,
Value::String( ref s ) if *s == "anonymous" => CrossOriginSetting::Anonymous,
Value::String( ref s ) if *s == "use-credentials" => CrossOriginSetting::UseCredentials,
_ => unreachable!("Unexpected crossOrigin value")
}
}
/// Sets the Cross-Origin Resource Sharing (CORS) setting for the image.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/crossOrigin)
pub fn set_cross_origin( &self, value: CrossOriginSetting ) {
js! { @(no_return)
@{self}.crossOrigin = @{
match value {
CrossOriginSetting::None => None,
CrossOriginSetting::Anonymous => Some("anonymous"),
CrossOriginSetting::UseCredentials => Some("use-credentials")
}
}
}
}
/// Returns the the rendered height of the image in CSS pixels.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/height)
pub fn height( &self ) -> u32 {
js! (
return @{self}.height;
).try_into().unwrap()
}
/// Sets the the rendered height of the image in CSS pixels.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/height)
pub fn set_height( &self, value: u32 ) {
js! { @(no_return)
@{self}.height = @{value};
}
}
/// Indicates whether the image is part of a server-side image map.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/isMap)
pub fn is_map( &self ) -> bool {
js!(
return @{self}.isMap;
).try_into().unwrap()
}
/// Sets whether the image is part of a server-side image map.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/isMap)
pub fn set_is_map( &self, value: bool ) {
js! { @(no_return)
@{self}.isMap = @{value};
}
}
/// Returns the intrinsic height of the image in CSS pixels, if it is available.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/naturalHeight)
pub fn natural_height( &self ) -> Option< u32 > {
match js!(
return @{self}.naturalHeight;
).try_into().unwrap() {
0 => None,
value => Some( value )
}
}
/// Returns the intrinsic width of the image in CSS pixels, if it is available.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/naturalWidth)
pub fn natural_width( &self ) -> Option< u32 > {
match js!(
return @{self}.naturalWidth;
).try_into().unwrap() {
0 => None,
value => Some( value )
}
}
/// Returns the full URL of the image, including the base URI.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/src)
pub fn src( &self ) -> String {
js! (
return @{self}.src;
).try_into().unwrap()
}
/// Sets the full URL of the image, including the base URI.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/src)
pub fn set_src( &self, value: &str ) {
js! { @(no_return)
@{self}.src = @{value};
}
}
/// Returns the `usemap` HTML attribute, containing a partial URL of a map element.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/useMap)
pub fn use_map( &self ) -> String {
js!(
return @{self}.useMap;
).try_into().unwrap()
}
/// Sets the `usemap` HTML attribute, containing a partial URL of a map element.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/useMap)
pub fn set_use_map( &self, value: &str ) {
js! { @(no_return)
@{self}.useMap = @{value};
}
}
/// Returns the rendered width of the image in CSS pixels.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/width)
pub fn width( &self ) -> u32 {
js! (
return @{self}.width;
).try_into().unwrap()
}
/// Sets the rendered width of the image in CSS pixels.
///
/// [(JavaScript docs)](https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/width)
pub fn set_width( &self, value: u32 ) {
js! { @(no_return)
@{self}.width = @{value};
}
}
}
#[cfg(web_api_tests)]
mod tests {
use super::*;
#[test]
fn test_new() {
let image = ImageElement::new();
assert_eq!(image.alt(), "");
}
#[test]
fn test_with_size() {
let image = ImageElement::with_size(333, 444);
assert_eq!(image.width(), 333);
assert_eq!(image.height(), 444);
}
#[test]
fn test_alt() {
let image = ImageElement::new();
assert_eq!(image.alt(), "");
image.set_alt("test");
assert_eq!(image.alt(), "test");
}
#[test]
fn test_complete() {
let image = ImageElement::new();
assert_eq!(image.complete(), true);
}
#[test]
fn test_width_height() {
let image = ImageElement::new();
assert_eq!(image.width(), 0);
assert_eq!(image.height(), 0);
image.set_width(4);
image.set_height(5);
assert_eq!(image.width(), 4);
assert_eq!(image.height(), 5);
}
#[test]
fn test_src() {
let image = ImageElement::new();
assert_eq!(image.src(), "");
image.set_src("http://example.com/image.gif");
assert_eq!(image.src(), "http://example.com/image.gif");
}
#[test]
fn test_use_map() {
let image = ImageElement::new();
assert_eq!(image.use_map(), "");
image.set_use_map("test");
assert_eq!(image.use_map(), "test");
}
#[test]
fn test_natural_width_height() {
let image = ImageElement::new();
assert_eq!(image.natural_width(), None);
assert_eq!(image.natural_height(), None);
}
#[test]
fn test_cross_origin() {
let image = ImageElement::new();
assert_eq!(image.cross_origin(), CrossOriginSetting::None);
image.set_cross_origin(CrossOriginSetting::Anonymous);
assert_eq!(image.cross_origin(), CrossOriginSetting::Anonymous);
image.set_cross_origin(CrossOriginSetting::UseCredentials);
assert_eq!(image.cross_origin(), CrossOriginSetting::UseCredentials);
image.set_cross_origin(CrossOriginSetting::None);
assert_eq!(image.cross_origin(), CrossOriginSetting::None);
}
}