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support textarea clone

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This commit is contained in:
tigercosmos 2018-06-06 22:05:07 -07:00
parent 464a3ef390
commit 73c0af6759
2 changed files with 14 additions and 9 deletions
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15
components/script/dom/htmltextareaelement.rs
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@ -22,7 +22,7 @@ use dom::htmlelement::HTMLElement;
use dom::htmlfieldsetelement::HTMLFieldSetElement;
use dom::htmlformelement::{FormControl, HTMLFormElement};
use dom::keyboardevent::KeyboardEvent;
use dom::node::{ChildrenMutation, Node, NodeDamage, UnbindContext};
use dom::node::{CloneChildrenFlag, ChildrenMutation, Node, NodeDamage, UnbindContext};
use dom::node::{document_from_node, window_from_node};
use dom::nodelist::NodeList;
use dom::textcontrol::{TextControlElement, TextControlSelection};
@ -420,6 +420,19 @@ impl VirtualMethods for HTMLTextAreaElement {
}
}
// The cloning steps for textarea elements must propagate the raw value
// and dirty value flag from the node being cloned to the copy.
fn cloning_steps(&self, copy: &Node, maybe_doc: Option<&Document>,
clone_children: CloneChildrenFlag) {
if let Some(ref s) = self.super_type() {
s.cloning_steps(copy, maybe_doc, clone_children);
}
let el = copy.downcast::<HTMLTextAreaElement>().unwrap();
el.value_dirty.set(self.value_dirty.get());
let mut textinput = el.textinput.borrow_mut();
textinput.set_content(self.textinput.borrow().get_content());
}
fn children_changed(&self, mutation: &ChildrenMutation) {
if let Some(ref s) = self.super_type() {
s.children_changed(mutation);