/**
 * 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 Apple Computer, Inc.
 *
 * 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 "HTMLTableSectionElement.h"

#include "ExceptionCode.h"
#include "HTMLCollection.h"
#include "HTMLNames.h"
#include "HTMLTableRowElement.h"
#include "HTMLTableElement.h"
#include "NodeList.h"
#include "Text.h"

namespace WebCore {

using namespace HTMLNames;

HTMLTableSectionElement::HTMLTableSectionElement(const QualifiedName& tagName, Document* document)
    : HTMLTablePartElement(tagName, document)
{
}

bool HTMLTableSectionElement::checkDTD(const Node* newChild)
{
    if (newChild->isTextNode())
        return static_cast<const Text*>(newChild)->containsOnlyWhitespace();
    return newChild->hasTagName(trTag) || newChild->hasTagName(formTag) ||
           newChild->hasTagName(scriptTag);
}

ContainerNode* HTMLTableSectionElement::addChild(PassRefPtr<Node> child)
{
    if (child->hasTagName(formTag)) {
        // First add the child.
        HTMLTablePartElement::addChild(child);

        // Now simply return ourselves as the container to insert into.
        // This has the effect of demoting the form to a leaf and moving it safely out of the way.
        return this;
    }

    return HTMLTablePartElement::addChild(child);
}

// used by table row groups to share style decls created by the enclosing table.
void HTMLTableSectionElement::additionalAttributeStyleDecls(Vector<CSSMutableStyleDeclaration*>& results)
{
    Node* p = parentNode();
    while (p && !p->hasTagName(tableTag))
        p = p->parentNode();
    if (!p)
        return;
    static_cast<HTMLTableElement*>(p)->addSharedGroupDecls(true, results);
}

// these functions are rather slow, since we need to get the row at
// the index... but they aren't used during usual HTML parsing anyway
PassRefPtr<HTMLElement> HTMLTableSectionElement::insertRow(int index, ExceptionCode& ec)
{
    RefPtr<HTMLTableRowElement> r;
    RefPtr<HTMLCollection> children = rows();
    int numRows = children ? (int)children->length() : 0;
    if (index < -1 || index > numRows)
        ec = INDEX_SIZE_ERR; // per the DOM
    else {
        r = new HTMLTableRowElement(trTag, document());
        if (numRows == index || index == -1)
            appendChild(r, ec);
        else {
            Node* n;
            if (index < 1)
                n = firstChild();
            else
                n = children->item(index);
            insertBefore(r, n, ec);
        }
    }
    return r.release();
}

void HTMLTableSectionElement::deleteRow( int index, ExceptionCode& ec)
{
    RefPtr<HTMLCollection> children = rows();
    int numRows = children ? (int)children->length() : 0;
    if (index == -1)
        index = numRows - 1;
    if (index >= 0 && index < numRows) {
        RefPtr<Node> row = children->item(index);
        HTMLElement::removeChild(row.get(), ec);
    } else
        ec = INDEX_SIZE_ERR;
}

int HTMLTableSectionElement::numRows() const
{
    int rows = 0;
    const Node *n = firstChild();
    while (n) {
        if (n->hasTagName(trTag))
            rows++;
        n = n->nextSibling();
    }

    return rows;
}

String HTMLTableSectionElement::align() const
{
    return getAttribute(alignAttr);
}

void HTMLTableSectionElement::setAlign(const String &value)
{
    setAttribute(alignAttr, value);
}

String HTMLTableSectionElement::ch() const
{
    return getAttribute(charAttr);
}

void HTMLTableSectionElement::setCh(const String &value)
{
    setAttribute(charAttr, value);
}

String HTMLTableSectionElement::chOff() const
{
    return getAttribute(charoffAttr);
}

void HTMLTableSectionElement::setChOff(const String &value)
{
    setAttribute(charoffAttr, value);
}

String HTMLTableSectionElement::vAlign() const
{
    return getAttribute(valignAttr);
}

void HTMLTableSectionElement::setVAlign(const String &value)
{
    setAttribute(valignAttr, value);
}

PassRefPtr<HTMLCollection> HTMLTableSectionElement::rows()
{
    return HTMLCollection::create(this, TSectionRows);
}

}