xref: /external/chromium_org/third_party/WebKit/Source/core/html/HTMLTableRowElement.cpp

/*
 * Copyright (C) 1997 Martin Jones (mjones@kde.org)
 *           (C) 1997 Torben Weis (weis@kde.org)
 *           (C) 1998 Waldo Bastian (bastian@kde.org)
 *           (C) 1999 Lars Knoll (knoll@kde.org)
 *           (C) 1999 Antti Koivisto (koivisto@kde.org)
 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2010 Apple Inc. All rights reserved.
 *
 * 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 "config.h"
#include "core/html/HTMLTableRowElement.h"

#include "bindings/v8/ExceptionState.h"
#include "core/HTMLNames.h"
#include "core/dom/ElementTraversal.h"
#include "core/dom/ExceptionCode.h"
#include "core/html/HTMLCollection.h"
#include "core/html/HTMLTableCellElement.h"
#include "core/html/HTMLTableElement.h"
#include "core/html/HTMLTableSectionElement.h"

namespace WebCore {

using namespace HTMLNames;

inline HTMLTableRowElement::HTMLTableRowElement(Document& document)
    : HTMLTablePartElement(trTag, document)
{
    ScriptWrappable::init(this);
}

DEFINE_NODE_FACTORY(HTMLTableRowElement)

bool HTMLTableRowElement::hasLegalLinkAttribute(const QualifiedName& name) const
{
    return name == backgroundAttr || HTMLTablePartElement::hasLegalLinkAttribute(name);
}

const QualifiedName& HTMLTableRowElement::subResourceAttributeName() const
{
    return backgroundAttr;
}

int HTMLTableRowElement::rowIndex() const
{
    ContainerNode* table = parentNode();
    if (!table)
        return -1;
    table = table->parentNode();
    if (!isHTMLTableElement(table))
        return -1;

    // To match Firefox, the row indices work like this:
    //   Rows from the first <thead> are numbered before all <tbody> rows.
    //   Rows from the first <tfoot> are numbered after all <tbody> rows.
    //   Rows from other <thead> and <tfoot> elements don't get row indices at all.

    int rIndex = 0;

    if (HTMLTableSectionElement* head = toHTMLTableElement(table)->tHead()) {
        for (HTMLTableRowElement* row = Traversal<HTMLTableRowElement>::firstChild(*head); row; row = Traversal<HTMLTableRowElement>::nextSibling(*row)) {
            if (row == this)
                return rIndex;
            ++rIndex;
        }
    }

    for (Element* child = ElementTraversal::firstWithin(*table); child; child = ElementTraversal::nextSibling(*child)) {
        if (child->hasTagName(tbodyTag)) {
            HTMLTableSectionElement* section = toHTMLTableSectionElement(child);
            for (HTMLTableRowElement* row = Traversal<HTMLTableRowElement>::firstChild(*section); row; row = Traversal<HTMLTableRowElement>::nextSibling(*row)) {
                if (row == this)
                    return rIndex;
                ++rIndex;
            }
        }
    }

    if (HTMLTableSectionElement* foot = toHTMLTableElement(table)->tFoot()) {
        for (HTMLTableRowElement* row = Traversal<HTMLTableRowElement>::firstChild(*foot); row; row = Traversal<HTMLTableRowElement>::nextSibling(*row)) {
            if (row == this)
                return rIndex;
            ++rIndex;
        }
    }

    // We get here for rows that are in <thead> or <tfoot> sections other than the main header and footer.
    return -1;
}

int HTMLTableRowElement::sectionRowIndex() const
{
    int rIndex = 0;
    const Node* n = this;
    do {
        n = n->previousSibling();
        if (n && isHTMLTableRowElement(*n))
            ++rIndex;
    } while (n);

    return rIndex;
}

PassRefPtrWillBeRawPtr<HTMLElement> HTMLTableRowElement::insertCell(ExceptionState& exceptionState)
{
    // The default 'index' argument value is -1.
    return insertCell(-1, exceptionState);
}

PassRefPtrWillBeRawPtr<HTMLElement> HTMLTableRowElement::insertCell(int index, ExceptionState& exceptionState)
{
    RefPtrWillBeRawPtr<HTMLCollection> children = cells();
    int numCells = children ? children->length() : 0;
    if (index < -1 || index > numCells) {
        exceptionState.throwDOMException(IndexSizeError, "The value provided (" + String::number(index) + ") is outside the range [-1, " + String::number(numCells) + "].");
        return nullptr;
    }

    RefPtrWillBeRawPtr<HTMLTableCellElement> cell = HTMLTableCellElement::create(tdTag, document());
    if (numCells == index || index == -1)
        appendChild(cell, exceptionState);
    else
        insertBefore(cell, children->item(index), exceptionState);
    return cell.release();
}

void HTMLTableRowElement::deleteCell(int index, ExceptionState& exceptionState)
{
    RefPtrWillBeRawPtr<HTMLCollection> children = cells();
    int numCells = children ? children->length() : 0;
    if (index == -1)
        index = numCells-1;
    if (index >= 0 && index < numCells) {
        RefPtrWillBeRawPtr<Element> cell = children->item(index);
        HTMLElement::removeChild(cell.get(), exceptionState);
    } else {
        exceptionState.throwDOMException(IndexSizeError, "The value provided (" + String::number(index) + ") is outside the range [0, " + String::number(numCells) + ").");
    }
}

PassRefPtrWillBeRawPtr<HTMLCollection> HTMLTableRowElement::cells()
{
    return ensureCachedHTMLCollection(TRCells);
}

}