third_party/WebKit/Source/core/layout/LayoutSearchField.cpp

/**
 * Copyright (C) 2006, 2007, 2010 Apple Inc. All rights reserved.
 *           (C) 2008 Torch Mobile Inc. All rights reserved.
 *               (http://www.torchmobile.com/)
 * Copyright (C) 2010 Google Inc. All rights reserved.
 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#include "core/layout/LayoutSearchField.h"

#include "core/InputTypeNames.h"
#include "core/dom/shadow/ShadowRoot.h"
#include "core/html/HTMLInputElement.h"
#include "core/html/shadow/ShadowElementNames.h"

namespace blink {

using namespace HTMLNames;

// ----------------------------

LayoutSearchField::LayoutSearchField(HTMLInputElement* element)
    : LayoutTextControlSingleLine(element) {
  ASSERT(element->type() == InputTypeNames::search);
}

LayoutSearchField::~LayoutSearchField() {}

inline Element* LayoutSearchField::searchDecorationElement() const {
  return inputElement()->userAgentShadowRoot()->getElementById(
      ShadowElementNames::searchDecoration());
}

inline Element* LayoutSearchField::cancelButtonElement() const {
  return inputElement()->userAgentShadowRoot()->getElementById(
      ShadowElementNames::clearButton());
}

LayoutUnit LayoutSearchField::computeControlLogicalHeight(
    LayoutUnit lineHeight,
    LayoutUnit nonContentHeight) const {
  Element* searchDecoration = searchDecorationElement();
  if (LayoutBox* decorationLayoutObject =
          searchDecoration ? searchDecoration->layoutBox() : 0) {
    decorationLayoutObject->updateLogicalHeight();
    nonContentHeight =
        max(nonContentHeight,
            decorationLayoutObject->borderAndPaddingLogicalHeight() +
                decorationLayoutObject->marginLogicalHeight());
    lineHeight = max(lineHeight, decorationLayoutObject->logicalHeight());
  }
  Element* cancelButton = cancelButtonElement();
  if (LayoutBox* cancelLayoutObject =
          cancelButton ? cancelButton->layoutBox() : 0) {
    cancelLayoutObject->updateLogicalHeight();
    nonContentHeight = max(nonContentHeight,
                           cancelLayoutObject->borderAndPaddingLogicalHeight() +
                               cancelLayoutObject->marginLogicalHeight());
    lineHeight = max(lineHeight, cancelLayoutObject->logicalHeight());
  }

  return lineHeight + nonContentHeight;
}

}  // namespace blink