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Have CharacterData call children_changed on its parent when data is set.

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Have CharacterData.SetData call children_changed on its parent when
data is set (if it is a Text node) so that HTMLStyleElement parents can
re-parse. Add variant ChildrenMutation::Text for it to use as the
mutation.

This fixes an issue where an empty <style> element's data is set but the
style is not updated. An HTMLStyleElement parent re-parses in its
children_changed implementation.
This commit is contained in:
Jonathan Chan 2017-06-07 10:16:05 -07:00
parent 3f2d747689
commit 4142665282
8 changed files with 24 additions and 301 deletions
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14
components/script/dom/characterdata.rs
View file

@ -6,6 +6,7 @@
use dom::bindings::cell::DOMRefCell;
use dom::bindings::codegen::Bindings::CharacterDataBinding::CharacterDataMethods;
use dom::bindings::codegen::Bindings::NodeBinding::NodeBinding::NodeMethods;
use dom::bindings::codegen::Bindings::ProcessingInstructionBinding::ProcessingInstructionMethods;
use dom::bindings::codegen::InheritTypes::{CharacterDataTypeId, NodeTypeId};
use dom::bindings::codegen::UnionTypes::NodeOrString;
@ -16,9 +17,10 @@ use dom::bindings::str::DOMString;
use dom::comment::Comment;
use dom::document::Document;
use dom::element::Element;
use dom::node::{Node, NodeDamage};
use dom::node::{ChildrenMutation, Node, NodeDamage};
use dom::processinginstruction::ProcessingInstruction;
use dom::text::Text;
use dom::virtualmethods::vtable_for;
use dom_struct::dom_struct;
use servo_config::opts;
use std::cell::Ref;
@ -85,6 +87,16 @@ impl CharacterDataMethods for CharacterData {
self.content_changed();
let node = self.upcast::<Node>();
node.ranges().replace_code_units(node, 0, old_length, new_length);
// If this is a Text node, we might need to re-parse (say, if our parent
// is a <style> element.) We don't need to if this is a Comment or
// ProcessingInstruction.
if let Some(_) = self.downcast::<Text>() {
if let Some(parent_node) = node.GetParentNode() {
let mutation = ChildrenMutation::ChangeText;
vtable_for(&parent_node).children_changed(&mutation);
}
}
}
// https://dom.spec.whatwg.org/#dom-characterdata-length