Libraries: Move to Userland/Libraries/

1 files changed, 65 insertions, 0 deletions

diff --git a/Userland/Libraries/LibWeb/CSS/StyleResolver.h b/Userland/Libraries/LibWeb/CSS/StyleResolver.h
new file mode 100644
index 0000000000..0dde35a261
--- /dev/null
+++ b/Userland/Libraries/LibWeb/CSS/StyleResolver.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <AK/NonnullRefPtrVector.h>
+#include <AK/OwnPtr.h>
+#include <LibWeb/CSS/StyleProperties.h>
+#include <LibWeb/Forward.h>
+
+namespace Web::CSS {
+
+struct MatchingRule {
+    RefPtr<StyleRule> rule;
+    size_t style_sheet_index { 0 };
+    size_t rule_index { 0 };
+    size_t selector_index { 0 };
+};
+
+class StyleResolver {
+public:
+    explicit StyleResolver(DOM::Document&);
+    ~StyleResolver();
+
+    DOM::Document& document() { return m_document; }
+    const DOM::Document& document() const { return m_document; }
+
+    NonnullRefPtr<StyleProperties> resolve_style(const DOM::Element&) const;
+
+    Vector<MatchingRule> collect_matching_rules(const DOM::Element&) const;
+    void sort_matching_rules(Vector<MatchingRule>&) const;
+
+    static bool is_inherited_property(CSS::PropertyID);
+
+private:
+    template<typename Callback>
+    void for_each_stylesheet(Callback) const;
+
+    DOM::Document& m_document;
+};
+
+}