LibWeb: Add LayoutTableRowGroup to implement display: table-row-group

Libraries/LibWeb/CMakeLists.txt

@@ -87,6 +87,7 @@ set(SOURCES
     Layout/LayoutTable.cpp
     Layout/LayoutTableCell.cpp
     Layout/LayoutTableRow.cpp
+    Layout/LayoutTableRowGroup.cpp
     Layout/LayoutText.cpp
     Layout/LayoutTreeBuilder.cpp
     Layout/LayoutWidget.cpp

Libraries/LibWeb/DOM/Element.cpp

@@ -39,6 +39,7 @@
 #include <LibWeb/Layout/LayoutTable.h>
 #include <LibWeb/Layout/LayoutTableCell.h>
 #include <LibWeb/Layout/LayoutTableRow.h>
+#include <LibWeb/Layout/LayoutTableRowGroup.h>
 #include <LibWeb/Layout/LayoutTreeBuilder.h>
 #include <LibWeb/Parser/HTMLParser.h>
 
@@ -130,6 +131,8 @@ RefPtr<LayoutNode> Element::create_layout_node(const StyleProperties* parent_sty
         return adopt(*new LayoutTableRow(*this, move(style)));
     if (display == "table-cell")
         return adopt(*new LayoutTableCell(*this, move(style)));
+    if (display == "table-row-group")
+        return adopt(*new LayoutTableRowGroup(*this, move(style)));
     if (display == "inline-block") {
         auto inline_block = adopt(*new LayoutBlock(this, move(style)));
         inline_block->set_inline(true);

Libraries/LibWeb/Layout/LayoutBlock.h

@@ -65,6 +65,10 @@ public:
 
     virtual void split_into_lines(LayoutBlock& container, LayoutMode) override;
 
+protected:
+    void compute_width();
+    void compute_position();
+    void compute_height();
 
 private:
     virtual bool is_block() const override { return true; }
@@ -75,10 +79,6 @@ private:
     void layout_inline_children(LayoutMode);
     void layout_block_children(LayoutMode);
 
-    void compute_width();
-    void compute_position();
-    void compute_height();
-
     Vector<LineBox> m_line_boxes;
 };
 

Libraries/LibWeb/Layout/LayoutNode.h

@@ -153,6 +153,7 @@ public:
     virtual bool is_table() const { return false; }
     virtual bool is_table_row() const { return false; }
     virtual bool is_table_cell() const { return false; }
+    virtual bool is_table_row_group() const { return false; }
     bool has_style() const { return m_has_style; }
 
     bool is_inline() const { return m_inline; }

Libraries/LibWeb/Layout/LayoutTableRowGroup.cpp

@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 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.
+ */
+
+#include <LibWeb/DOM/Element.h>
+#include <LibWeb/Layout/LayoutTableRowGroup.h>
+#include <LibWeb/Layout/LayoutTableRow.h>
+
+namespace Web {
+
+LayoutTableRowGroup::LayoutTableRowGroup(const Element& element, NonnullRefPtr<StyleProperties> style)
+    : LayoutBlock(&element, move(style))
+{
+}
+
+LayoutTableRowGroup::~LayoutTableRowGroup()
+{
+}
+
+void LayoutTableRowGroup::layout(LayoutMode layout_mode)
+{
+    compute_width();
+
+    if (!is_inline())
+        compute_position();
+
+    float content_height = 0;
+
+    for_each_child_of_type<LayoutTableRow>([&](auto& row) {
+        row.layout(layout_mode);
+        content_height += row.height();
+    });
+
+    rect().set_height(content_height);
+}
+
+}

Libraries/LibWeb/Layout/LayoutTableRowGroup.h

@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 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 <LibWeb/Layout/LayoutBlock.h>
+
+namespace Web {
+
+class LayoutTableRowGroup final : public LayoutBlock {
+public:
+    LayoutTableRowGroup(const Element&, NonnullRefPtr<StyleProperties>);
+    virtual ~LayoutTableRowGroup() override;
+
+    virtual void layout(LayoutMode = LayoutMode::Default) override;
+
+private:
+    virtual bool is_table_row_group() const override { return true; }
+    virtual const char* class_name() const override { return "LayoutTableRowGroup"; }
+};
+
+template<>
+inline bool is<LayoutTableRowGroup>(const LayoutNode& node)
+{
+    return node.is_table_row_group();
+}
+
+}