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Add bindings for list and pair list value of nsCSSValue.

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This commit is contained in:
Xidorn Quan 2017-05-16 09:47:19 +10:00
parent 0722031726
commit f733958f2e
2 changed files with 57 additions and 9 deletions
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40
components/style/gecko_bindings/sugar/ns_css_value.rs
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@ -6,6 +6,7 @@
use app_units::Au;
use gecko_bindings::bindings;
use gecko_bindings::structs;
use gecko_bindings::structs::{nsCSSValue, nsCSSUnit};
use gecko_bindings::structs::{nsCSSValue_Array, nscolor};
use gecko_string_cache::Atom;
@ -220,6 +221,45 @@ impl nsCSSValue {
pub fn set_pair(&mut self, x: &nsCSSValue, y: &nsCSSValue) {
unsafe { bindings::Gecko_CSSValue_SetPair(self, x, y) }
}
/// Set to a list value
///
/// This is only supported on the main thread.
pub fn set_list<I>(&mut self, mut values: I) where I: ExactSizeIterator<Item=nsCSSValue> {
debug_assert!(values.len() > 0, "Empty list is not supported");
unsafe { bindings::Gecko_CSSValue_SetList(self, values.len() as u32); }
debug_assert_eq!(self.mUnit, nsCSSUnit::eCSSUnit_List);
let mut item_ptr = &mut unsafe {
self.mValue.mList.as_ref() // &*nsCSSValueList_heap
.as_mut().expect("List pointer should be non-null")
}._base as *mut structs::nsCSSValueList;
while let Some(item) = unsafe { item_ptr.as_mut() } {
item.mValue = values.next().expect("Values shouldn't have been exhausted");
item_ptr = item.mNext;
}
debug_assert!(values.next().is_none(), "Values should have been exhausted");
}
/// Set to a pair list value
///
/// This is only supported on the main thread.
pub fn set_pair_list<I>(&mut self, mut values: I)
where I: ExactSizeIterator<Item=(nsCSSValue, nsCSSValue)> {
debug_assert!(values.len() > 0, "Empty list is not supported");
unsafe { bindings::Gecko_CSSValue_SetPairList(self, values.len() as u32); }
debug_assert_eq!(self.mUnit, nsCSSUnit::eCSSUnit_PairList);
let mut item_ptr = &mut unsafe {
self.mValue.mPairList.as_ref() // &*nsCSSValuePairList_heap
.as_mut().expect("List pointer should be non-null")
}._base as *mut structs::nsCSSValuePairList;
while let Some(item) = unsafe { item_ptr.as_mut() } {
let value = values.next().expect("Values shouldn't have been exhausted");
item.mXValue = value.0;
item.mYValue = value.1;
item_ptr = item.mNext;
}
debug_assert!(values.next().is_none(), "Values should have been exhausted");
}
}
impl Drop for nsCSSValue {