Source/WebCore/css/typedom/transform/CSSTransformValue.cpp

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#include "config.h"
#include "CSSTransformValue.h"

#if ENABLE(CSS_TYPED_OM)

#include "CSSTransformComponent.h"
#include "DOMMatrix.h"
#include "ExceptionOr.h"
#include <wtf/Algorithms.h>
#include <wtf/IsoMallocInlines.h>
#include <wtf/text/WTFString.h>

namespace WebCore {

WTF_MAKE_ISO_ALLOCATED_IMPL(CSSTransformValue);

ExceptionOr<Ref<CSSTransformValue>> CSSTransformValue::create(Vector<RefPtr<CSSTransformComponent>>&& transforms)
{
    // https://drafts.css-houdini.org/css-typed-om/#dom-csstransformvalue-csstransformvalue
    if (transforms.isEmpty())
        return Exception { TypeError };
    return adoptRef(*new CSSTransformValue(WTFMove(transforms)));
}

ExceptionOr<RefPtr<CSSTransformComponent>> CSSTransformValue::item(size_t index)
{
    if (index >= m_components.size())
        return Exception { RangeError, makeString("Index ", index, " exceeds the range of CSSTransformValue.") };

    return RefPtr<CSSTransformComponent> { m_components[index] };
}

ExceptionOr<RefPtr<CSSTransformComponent>> CSSTransformValue::setItem(size_t index, Ref<CSSTransformComponent>&& value)
{
    if (index > m_components.size())
        return Exception { RangeError, makeString("Index ", index, " exceeds the range of CSSTransformValue.") };

    if (index == m_components.size())
        m_components.append(WTFMove(value));
    else
        m_components[index] = WTFMove(value);

    return RefPtr<CSSTransformComponent> { m_components[index] };
}

bool CSSTransformValue::is2D() const
{
    // https://drafts.css-houdini.org/css-typed-om/#dom-csstransformvalue-is2d
    return WTF::allOf(m_components, [] (auto& component) {
        return component && component->is2D();
    });
}

ExceptionOr<Ref<DOMMatrix>> CSSTransformValue::toMatrix()
{
    // FIXME: add correct behavior here.
    return DOMMatrix::fromMatrix(DOMMatrixInit { });
}

CSSTransformValue::CSSTransformValue(Vector<RefPtr<CSSTransformComponent>>&& transforms)
    : m_components(WTFMove(transforms))
{
}

void CSSTransformValue::serialize(StringBuilder& builder, OptionSet<SerializationArguments>) const
{
    // https://drafts.css-houdini.org/css-typed-om/#serialize-a-csstransformvalue
    for (size_t i = 0; i < m_components.size(); ++i) {
        if (i)
            builder.append(' ');
        m_components[i]->serialize(builder);
    }
}

} // namespace WebCore

#endif