ladybird/Libraries/LibWeb/HTML/HTMLObjectElement.cpp

/*
 * 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 <LibGfx/Bitmap.h>
#include <LibGfx/ImageDecoder.h>
#include <LibWeb/CSS/StyleResolver.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/Event.h>
#include <LibWeb/HTML/HTMLObjectElement.h>
#include <LibWeb/Layout/LayoutImage.h>
#include <LibWeb/Loader/ResourceLoader.h>

namespace Web {

HTMLObjectElement::HTMLObjectElement(DOM::Document& document, const FlyString& tag_name)
    : HTMLElement(document, tag_name)
{
    m_image_loader.on_load = [this] {
        m_should_show_fallback_content = false;
        this->document().force_layout();
    };

    m_image_loader.on_fail = [this] {
        m_should_show_fallback_content = true;
        this->document().force_layout();
    };
}

HTMLObjectElement::~HTMLObjectElement()
{
}

void HTMLObjectElement::parse_attribute(const FlyString& name, const String& value)
{
    HTMLElement::parse_attribute(name, value);

    if (name == HTML::AttributeNames::data)
        m_image_loader.load(document().complete_url(value));
}

RefPtr<LayoutNode> HTMLObjectElement::create_layout_node(const CSS::StyleProperties* parent_style)
{
    if (m_should_show_fallback_content)
        return HTMLElement::create_layout_node(parent_style);

    auto style = document().style_resolver().resolve_style(*this, parent_style);
    if (style->display() == CSS::Display::None)
        return nullptr;
    if (m_image_loader.has_image())
        return adopt(*new LayoutImage(document(), *this, move(style), m_image_loader));
    return nullptr;
}

}