mirror of
https://github.com/SerenityOS/serenity
synced 2026-05-10 00:52:28 +02:00
1b73445f55
You can now build with STYLE_INVALIDATION_DEBUG and get a debug stream of reasons why style invalidations are happening and where. I've rewritten this code many times, so instead of throwing it away once again, I figured we should at least have it behind a flag. (cherry picked from commit ddbfac38b0074819470766846fca08fd78630eb0; minorly amended for conflicts in AK/Debug.h.in and Meta/CMake/all_the_debug_macros.cmake due to us having more debug macros. Also, downstream got alphabetical order for STYLE_INVALIDATION_DEBUG wrong.)
48 lines
2.2 KiB
C++
48 lines
2.2 KiB
C++
/*
|
||
* Copyright (c) 2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
|
||
*
|
||
* SPDX-License-Identifier: BSD-2-Clause
|
||
*/
|
||
|
||
#include <LibWeb/CSS/StyleComputer.h>
|
||
#include <LibWeb/DOM/AdoptedStyleSheets.h>
|
||
#include <LibWeb/DOM/Document.h>
|
||
|
||
namespace Web::DOM {
|
||
|
||
JS::NonnullGCPtr<WebIDL::ObservableArray> create_adopted_style_sheets_list(Document& document)
|
||
{
|
||
auto adopted_style_sheets = WebIDL::ObservableArray::create(document.realm());
|
||
adopted_style_sheets->set_on_set_an_indexed_value_callback([&document](JS::Value& value) -> WebIDL::ExceptionOr<void> {
|
||
auto& vm = document.vm();
|
||
if (!value.is_object())
|
||
return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "CSSStyleSheet");
|
||
auto& object = value.as_object();
|
||
if (!is<CSS::CSSStyleSheet>(object))
|
||
return vm.throw_completion<JS::TypeError>(JS::ErrorType::NotAnObjectOfType, "CSSStyleSheet");
|
||
auto& style_sheet = static_cast<CSS::CSSStyleSheet&>(object);
|
||
|
||
// The set an indexed value algorithm for adoptedStyleSheets, given value and index, is the following:
|
||
// 1. If value’s constructed flag is not set, or its constructor document is not equal to this
|
||
// DocumentOrShadowRoot's node document, throw a "NotAllowedError" DOMException.
|
||
if (!style_sheet.constructed())
|
||
return WebIDL::NotAllowedError::create(document.realm(), "StyleSheet's constructed flag is not set."_fly_string);
|
||
if (!style_sheet.constructed() || style_sheet.constructor_document().ptr() != &document)
|
||
return WebIDL::NotAllowedError::create(document.realm(), "Sharing a StyleSheet between documents is not allowed."_fly_string);
|
||
|
||
document.style_computer().load_fonts_from_sheet(style_sheet);
|
||
document.style_computer().invalidate_rule_cache();
|
||
document.invalidate_style(DOM::StyleInvalidationReason::AdoptedStyleSheetsList);
|
||
return {};
|
||
});
|
||
adopted_style_sheets->set_on_delete_an_indexed_value_callback([&document]() -> WebIDL::ExceptionOr<void> {
|
||
document.style_computer().invalidate_rule_cache();
|
||
document.invalidate_style(DOM::StyleInvalidationReason::AdoptedStyleSheetsList);
|
||
return {};
|
||
});
|
||
|
||
return adopted_style_sheets;
|
||
}
|
||
|
||
}
|