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/*
* Copyright (C) 2008 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "HTMLTableRowsCollection.h"
#include "HTMLNames.h"
#include "HTMLTableElement.h"
#include "HTMLTableRowElement.h"
namespace WebCore {
using namespace HTMLNames;
static bool isInHead(Element* row)
{
return row->parent() && static_cast<Element*>(row->parent())->hasLocalName(theadTag);
}
static bool isInBody(Element* row)
{
return row->parent() && static_cast<Element*>(row->parent())->hasLocalName(tbodyTag);
}
static bool isInFoot(Element* row)
{
return row->parent() && static_cast<Element*>(row->parent())->hasLocalName(tfootTag);
}
HTMLTableRowElement* HTMLTableRowsCollection::rowAfter(HTMLTableElement* table, HTMLTableRowElement* previous)
{
Node* child = 0;
// Start by looking for the next row in this section.
// Continue only if there is none.
if (previous && previous->parent() != table) {
for (child = previous->nextSibling(); child; child = child->nextSibling()) {
if (child->hasTagName(trTag))
return static_cast<HTMLTableRowElement*>(child);
}
}
// If still looking at head sections, find the first row in the next head section.
if (!previous)
child = table->firstChild();
else if (isInHead(previous))
child = previous->parent()->nextSibling();
for (; child; child = child->nextSibling()) {
if (child->hasTagName(theadTag)) {
for (Node* grandchild = child->firstChild(); grandchild; grandchild = grandchild->nextSibling()) {
if (grandchild->hasTagName(trTag))
return static_cast<HTMLTableRowElement*>(grandchild);
}
}
}
// If still looking at top level and bodies, find the next row in top level or the first in the next body section.
if (!previous || isInHead(previous))
child = table->firstChild();
else if (previous->parent() == table)
child = previous->nextSibling();
else if (isInBody(previous))
child = previous->parent()->nextSibling();
for (; child; child = child->nextSibling()) {
if (child->hasTagName(trTag))
return static_cast<HTMLTableRowElement*>(child);
if (child->hasTagName(tbodyTag)) {
for (Node* grandchild = child->firstChild(); grandchild; grandchild = grandchild->nextSibling()) {
if (grandchild->hasTagName(trTag))
return static_cast<HTMLTableRowElement*>(grandchild);
}
}
}
// Find the first row in the next foot section.
if (!previous || !isInFoot(previous))
child = table->firstChild();
else
child = previous->parent()->nextSibling();
for (; child; child = child->nextSibling()) {
if (child->hasTagName(tfootTag)) {
for (Node* grandchild = child->firstChild(); grandchild; grandchild = grandchild->nextSibling()) {
if (grandchild->hasTagName(trTag))
return static_cast<HTMLTableRowElement*>(grandchild);
}
}
}
return 0;
}
HTMLTableRowElement* HTMLTableRowsCollection::lastRow(HTMLTableElement* table)
{
for (Node* child = table->lastChild(); child; child = child->previousSibling()) {
if (child->hasTagName(tfootTag)) {
for (Node* grandchild = child->lastChild(); grandchild; grandchild = grandchild->previousSibling()) {
if (grandchild->hasTagName(trTag))
return static_cast<HTMLTableRowElement*>(grandchild);
}
}
}
for (Node* child = table->lastChild(); child; child = child->previousSibling()) {
if (child->hasTagName(trTag))
return static_cast<HTMLTableRowElement*>(child);
if (child->hasTagName(tbodyTag)) {
for (Node* grandchild = child->lastChild(); grandchild; grandchild = grandchild->previousSibling()) {
if (grandchild->hasTagName(trTag))
return static_cast<HTMLTableRowElement*>(grandchild);
}
}
}
for (Node* child = table->lastChild(); child; child = child->previousSibling()) {
if (child->hasTagName(theadTag)) {
for (Node* grandchild = child->lastChild(); grandchild; grandchild = grandchild->previousSibling()) {
if (grandchild->hasTagName(trTag))
return static_cast<HTMLTableRowElement*>(grandchild);
}
}
}
return 0;
}
HTMLTableRowsCollection::HTMLTableRowsCollection(PassRefPtr<HTMLTableElement> table)
: HTMLCollection(table, OtherCollection, 0)
{
}
PassRefPtr<HTMLTableRowsCollection> HTMLTableRowsCollection::create(PassRefPtr<HTMLTableElement> table)
{
return adoptRef(new HTMLTableRowsCollection(table));
}
Element* HTMLTableRowsCollection::itemAfter(Element* previous) const
{
ASSERT(!previous || previous->hasLocalName(trTag));
return rowAfter(static_cast<HTMLTableElement*>(base()), static_cast<HTMLTableRowElement*>(previous));
}
}