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Factor out a new function to check display property is changed from 'none' to other

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This commit is contained in:
Hiroyuki Ikezoe 2018-02-21 19:33:59 +09:00
parent f90e98dcc9
commit 5ba2e874b1
2 changed files with 17 additions and 8 deletions
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9
components/style/matching.rs
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@ -176,14 +176,7 @@ trait PrivateMatchMethods: TElement {
return;
}
let display_changed_from_none = old_values.map_or(false, |old| {
let old_display_style = old.get_box().clone_display();
let new_display_style = new_values.get_box().clone_display();
old_display_style == Display::None &&
new_display_style != Display::None
});
if display_changed_from_none {
if new_values.is_display_property_changed_from_none(old_values) {
// When display value is changed from none to other, we need to
// traverse descendant elements in a subsequent normal
// traversal (we can't traverse them in this animation-only restyle