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https://github.com/RGBCube/serenity
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1682f0b760
SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
95 lines
2.8 KiB
C++
95 lines
2.8 KiB
C++
/*
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* Copyright (c) 2021, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Debug.h>
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#include <AK/URL.h>
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#include <LibWeb/CSS/CSSImportRule.h>
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#include <LibWeb/CSS/Parser/DeprecatedCSSParser.h>
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#include <LibWeb/CSS/StyleSheet.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/DOM/Element.h>
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#include <LibWeb/Loader/CSSLoader.h>
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#include <LibWeb/Loader/ResourceLoader.h>
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namespace Web {
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CSSLoader::CSSLoader(DOM::Element& owner_element)
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: m_owner_element(owner_element)
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{
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}
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void CSSLoader::load_from_text(const String& text)
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{
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m_style_sheet = parse_css(CSS::ParsingContext(m_owner_element.document()), text);
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if (!m_style_sheet) {
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m_style_sheet = CSS::CSSStyleSheet::create({});
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m_style_sheet->set_owner_node(&m_owner_element);
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}
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load_next_import_if_needed();
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}
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void CSSLoader::load_from_url(const URL& url)
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{
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m_style_sheet = CSS::CSSStyleSheet::create({});
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m_style_sheet->set_owner_node(&m_owner_element);
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auto request = LoadRequest::create_for_url_on_page(url, m_owner_element.document().page());
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set_resource(ResourceLoader::the().load_resource(Resource::Type::Generic, request));
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}
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void CSSLoader::resource_did_load()
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{
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VERIFY(resource());
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if (!resource()->has_encoded_data()) {
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dbgln_if(CSS_LOADER_DEBUG, "CSSLoader: Resource did load, no encoded data. URL: {}", resource()->url());
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} else {
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dbgln_if(CSS_LOADER_DEBUG, "CSSLoader: Resource did load, has encoded data. URL: {}", resource()->url());
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}
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auto sheet = parse_css(CSS::ParsingContext(m_owner_element.document()), resource()->encoded_data());
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if (!sheet) {
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dbgln_if(CSS_LOADER_DEBUG, "CSSLoader: Failed to parse stylesheet: {}", resource()->url());
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return;
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}
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bool was_imported = m_style_sheet->for_first_not_loaded_import_rule([&](auto& rule) {
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rule.set_style_sheet(sheet);
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});
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// Transfer the rules from the successfully parsed sheet into the sheet we've already inserted.
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if (!was_imported) {
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m_style_sheet->rules() = sheet->rules();
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}
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if (on_load)
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on_load();
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load_next_import_if_needed();
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}
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void CSSLoader::resource_did_fail()
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{
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dbgln_if(CSS_LOADER_DEBUG, "CSSLoader: Resource did fail. URL: {}", resource()->url());
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load_next_import_if_needed();
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}
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void CSSLoader::load_next_import_if_needed()
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{
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// Create load request for the first import which isn't loaded.
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// TODO: We need to somehow handle infinite cycles in imports.
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m_style_sheet->for_first_not_loaded_import_rule([&](auto& rule) {
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dbgln_if(CSS_LOADER_DEBUG, "CSSLoader: Loading @import {}", rule.url());
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LoadRequest request;
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request.set_url(rule.url());
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set_resource(ResourceLoader::the().load_resource(Resource::Type::Generic, request));
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});
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}
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}
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