1 /*

     2  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)

     3  *           (C) 1999 Antti Koivisto (koivisto@kde.org)

     4  *           (C) 2001 Dirk Mueller (mueller@kde.org)

     5  * Copyright (C) 2003, 2010 Apple Inc. All rights reserved.

     6  *

     7  * This library is free software; you can redistribute it and/or

     8  * modify it under the terms of the GNU Library General Public

     9  * License as published by the Free Software Foundation; either

    10  * version 2 of the License, or (at your option) any later version.

    11  *

    12  * This library is distributed in the hope that it will be useful,

    13  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    15  * Library General Public License for more details.

    16  *

    17  * You should have received a copy of the GNU Library General Public License

    18  * along with this library; see the file COPYING.LIB.  If not, write to

    19  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

    20  * Boston, MA 02110-1301, USA.

    21  */

    22 

    23 #include "config.h"

    24 #include "HTMLTitleElement.h"

    25 

    26 #include "Document.h"

    27 #include "HTMLNames.h"

    28 #include "Text.h"

    29 

    30 namespace WebCore {

    31 

    32 using namespace HTMLNames;

    33 

    34 inline HTMLTitleElement::HTMLTitleElement(const QualifiedName& tagName, Document* document)

    35     : HTMLElement(tagName, document)

    36     , m_title("")

    37 {

    38     ASSERT(hasTagName(titleTag));

    39 }

    40 

    41 PassRefPtr<HTMLTitleElement> HTMLTitleElement::create(const QualifiedName& tagName, Document* document)

    42 {

    43     return adoptRef(new HTMLTitleElement(tagName, document));

    44 }

    45 

    46 void HTMLTitleElement::insertedIntoDocument()

    47 {

    48     HTMLElement::insertedIntoDocument();

    49     document()->setTitle(m_title, this);

    50 }

    51 

    52 void HTMLTitleElement::removedFromDocument()

    53 {

    54     HTMLElement::removedFromDocument();

    55     document()->removeTitle(this);

    56 }

    57 

    58 void HTMLTitleElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)

    59 {

    60     m_title = "";

    61     for (Node* c = firstChild(); c != 0; c = c->nextSibling())

    62         if (c->nodeType() == TEXT_NODE || c->nodeType() == CDATA_SECTION_NODE)

    63             m_title += c->nodeValue();

    64     if (inDocument())

    65         document()->setTitle(m_title, this);

    66     HTMLElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);

    67 }

    68 

    69 String HTMLTitleElement::text() const

    70 {

    71     String val = "";

    72     

    73     for (Node *n = firstChild(); n; n = n->nextSibling()) {

    74         if (n->isTextNode())

    75             val += static_cast<Text*>(n)->data();

    76     }

    77     

    78     return val;

    79 }

    80 

    81 void HTMLTitleElement::setText(const String &value)

    82 {

    83     ExceptionCode ec = 0;

    84     int numChildren = childNodeCount();

    85     

    86     if (numChildren == 1 && firstChild()->isTextNode())

    87         static_cast<Text*>(firstChild())->setData(value, ec);

    88     else {  

    89         // We make a copy here because entity of "value" argument can be Document::m_title,

    90         // which goes empty during removeChildren() invocation below,

    91         // which causes HTMLTitleElement::childrenChanged(), which ends up Document::setTitle().

    92         String valueCopy(value);

    93 

    94         if (numChildren > 0)

    95             removeChildren();

    96 

    97         appendChild(document()->createTextNode(valueCopy.impl()), ec);

    98     }

    99 }

   100 

   101 }