ladybird/Userland/Libraries/LibWeb/Layout/TextNode.h

/*
 * 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 <LibWeb/DOM/Text.h>
#include <LibWeb/Layout/Node.h>

namespace Web::Layout {

class LineBoxFragment;

class TextNode : public Node {
public:
    TextNode(DOM::Document&, DOM::Text&);
    virtual ~TextNode() override;

    const DOM::Text& dom_node() const { return static_cast<const DOM::Text&>(*Node::dom_node()); }

    const String& text_for_rendering() const { return m_text_for_rendering; }

    virtual void paint_fragment(PaintContext&, const LineBoxFragment&, PaintPhase) const override;

    virtual void split_into_lines(InlineFormattingContext&, LayoutMode) override;

private:
    virtual bool is_text_node() const final { return true; }
    virtual bool wants_mouse_events() const override;
    virtual void handle_mousedown(Badge<EventHandler>, const Gfx::IntPoint&, unsigned button, unsigned modifiers) override;
    virtual void handle_mouseup(Badge<EventHandler>, const Gfx::IntPoint&, unsigned button, unsigned modifiers) override;
    virtual void handle_mousemove(Badge<EventHandler>, const Gfx::IntPoint&, unsigned button, unsigned modifiers) override;
    void split_into_lines_by_rules(InlineFormattingContext&, LayoutMode, bool do_collapse, bool do_wrap_lines, bool do_wrap_breaks);
    void paint_cursor_if_needed(PaintContext&, const LineBoxFragment&) const;

    template<typename Callback>
    void for_each_chunk(Callback, LayoutMode, bool do_wrap_lines, bool do_wrap_breaks) const;

    String m_text_for_rendering;
};

template<>
inline bool Node::fast_is<TextNode>() const { return is_text_node(); }

}