Source/WebCore/css/CSSGridTemplateValue.cpp

/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
 * Copyright (C) 2013 Igalia S.L.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
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 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * 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
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#include "config.h"
#include "CSSGridTemplateValue.h"

#include "GridCoordinate.h"
#include <wtf/text/StringBuilder.h>

namespace WebCore {

CSSGridTemplateValue::CSSGridTemplateValue(const NamedGridAreaMap& gridAreaMap, size_t rowCount, size_t columnCount)
    : CSSValue(GridTemplateClass)
    , m_gridAreaMap(gridAreaMap)
    , m_rowCount(rowCount)
    , m_columnCount(columnCount)
{
    ASSERT(m_rowCount);
    ASSERT(m_columnCount);
}

static String stringForPosition(const NamedGridAreaMap& gridAreaMap, size_t row, size_t column)
{
    Vector<String> candidates;

    for (auto it = gridAreaMap.begin(), end = gridAreaMap.end(); it != end; ++it) {
        const GridCoordinate& coordinate = it->value;
        if (row >= coordinate.rows.initialPositionIndex && row <= coordinate.rows.finalPositionIndex)
            candidates.append(it->key);
    }

    for (auto it = gridAreaMap.begin(), end = gridAreaMap.end(); it != end; ++it) {
        const GridCoordinate& coordinate = it->value;
        if (column >= coordinate.columns.initialPositionIndex && column <= coordinate.columns.finalPositionIndex && candidates.contains(it->key))
            return it->key;
    }

    return ".";
}

String CSSGridTemplateValue::customCSSText() const
{
    StringBuilder builder;
    for (size_t row = 0; row < m_rowCount; ++row) {
        builder.append('\"');
        for (size_t column = 0; column < m_columnCount; ++column) {
            builder.append(stringForPosition(m_gridAreaMap, row, column));
            if (column != m_columnCount - 1)
                builder.append(' ');
        }
        builder.append('\"');
        if (row != m_rowCount - 1)
            builder.append(' ');
    }
    return builder.toString();
}

} // namespace WebCore