mirror of
https://github.com/servo/servo.git
synced 2025-06-24 00:54:32 +01:00
87 lines
2.9 KiB
Rust
87 lines
2.9 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
//! Common handling for the specified value CSS url() values.
|
|
|
|
use cssparser::CssStringWriter;
|
|
use gecko_bindings::structs::{ServoBundledURI, URLExtraData};
|
|
use gecko_bindings::sugar::refptr::RefPtr;
|
|
use parser::ParserContext;
|
|
use std::borrow::Cow;
|
|
use std::fmt::{self, Write};
|
|
use std::sync::Arc;
|
|
use style_traits::ToCss;
|
|
|
|
/// A specified url() value for gecko. Gecko does not eagerly resolve SpecifiedUrls.
|
|
#[derive(Clone, Debug, PartialEq)]
|
|
pub struct SpecifiedUrl {
|
|
/// The URL in unresolved string form.
|
|
///
|
|
/// Refcounted since cloning this should be cheap and data: uris can be
|
|
/// really large.
|
|
serialization: Arc<String>,
|
|
|
|
/// The URL extra data.
|
|
pub extra_data: RefPtr<URLExtraData>,
|
|
}
|
|
|
|
impl SpecifiedUrl {
|
|
/// Try to parse a URL from a string value that is a valid CSS token for a
|
|
/// URL.
|
|
///
|
|
/// Returns `Err` in the case that extra_data is incomplete.
|
|
pub fn parse_from_string<'a>(url: Cow<'a, str>,
|
|
context: &ParserContext)
|
|
-> Result<Self, ()> {
|
|
Ok(SpecifiedUrl {
|
|
serialization: Arc::new(url.into_owned()),
|
|
extra_data: context.url_data.clone(),
|
|
})
|
|
}
|
|
|
|
/// Returns true if the URL is definitely invalid. We don't eagerly resolve
|
|
/// URLs in gecko, so we just return false here.
|
|
/// use its |resolved| status.
|
|
pub fn is_invalid(&self) -> bool {
|
|
false
|
|
}
|
|
|
|
/// Returns true if this URL looks like a fragment.
|
|
/// See https://drafts.csswg.org/css-values/#local-urls
|
|
pub fn is_fragment(&self) -> bool {
|
|
self.as_str().chars().next().map_or(false, |c| c == '#')
|
|
}
|
|
|
|
/// Return the resolved url as string, or the empty string if it's invalid.
|
|
///
|
|
/// FIXME(bholley): This returns the unresolved URL while the servo version
|
|
/// returns the resolved URL.
|
|
pub fn as_str(&self) -> &str {
|
|
&*self.serialization
|
|
}
|
|
|
|
/// Little helper for Gecko's ffi.
|
|
pub fn as_slice_components(&self) -> (*const u8, usize) {
|
|
(self.serialization.as_str().as_ptr(), self.serialization.as_str().len())
|
|
}
|
|
|
|
/// Create a bundled URI suitable for sending to Gecko
|
|
/// to be constructed into a css::URLValue
|
|
pub fn for_ffi(&self) -> ServoBundledURI {
|
|
let (ptr, len) = self.as_slice_components();
|
|
ServoBundledURI {
|
|
mURLString: ptr,
|
|
mURLStringLength: len as u32,
|
|
mExtraData: self.extra_data.get(),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl ToCss for SpecifiedUrl {
|
|
fn to_css<W>(&self, dest: &mut W) -> fmt::Result where W: fmt::Write {
|
|
try!(dest.write_str("url(\""));
|
|
try!(CssStringWriter::new(dest).write_str(&*self.serialization));
|
|
dest.write_str("\")")
|
|
}
|
|
}
|