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 "RenderStyle.h"
29 #include "Text.h"
30
31 namespace WebCore {
32
33 using namespace HTMLNames;
34
HTMLTitleElement(const QualifiedName & tagName,Document * document)35 inline HTMLTitleElement::HTMLTitleElement(const QualifiedName& tagName, Document* document)
36 : HTMLElement(tagName, document)
37 {
38 ASSERT(hasTagName(titleTag));
39 }
40
create(const QualifiedName & tagName,Document * document)41 PassRefPtr<HTMLTitleElement> HTMLTitleElement::create(const QualifiedName& tagName, Document* document)
42 {
43 return adoptRef(new HTMLTitleElement(tagName, document));
44 }
45
insertedIntoDocument()46 void HTMLTitleElement::insertedIntoDocument()
47 {
48 HTMLElement::insertedIntoDocument();
49 document()->setTitleElement(m_title, this);
50 }
51
removedFromDocument()52 void HTMLTitleElement::removedFromDocument()
53 {
54 HTMLElement::removedFromDocument();
55 document()->removeTitle(this);
56 }
57
childrenChanged(bool changedByParser,Node * beforeChange,Node * afterChange,int childCountDelta)58 void HTMLTitleElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
59 {
60 m_title = textWithDirection();
61 if (inDocument())
62 document()->setTitleElement(m_title, this);
63 HTMLElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
64 }
65
text() const66 String HTMLTitleElement::text() const
67 {
68 String val = "";
69
70 for (Node *n = firstChild(); n; n = n->nextSibling()) {
71 if (n->isTextNode())
72 val += static_cast<Text*>(n)->data();
73 }
74
75 return val;
76 }
77
textWithDirection()78 StringWithDirection HTMLTitleElement::textWithDirection()
79 {
80 TextDirection direction = LTR;
81 if (RenderStyle* style = computedStyle())
82 direction = style->direction();
83 else if (RefPtr<RenderStyle> style = styleForRenderer())
84 direction = style->direction();
85 return StringWithDirection(text(), direction);
86 }
87
setText(const String & value)88 void HTMLTitleElement::setText(const String &value)
89 {
90 ExceptionCode ec = 0;
91 int numChildren = childNodeCount();
92
93 if (numChildren == 1 && firstChild()->isTextNode())
94 static_cast<Text*>(firstChild())->setData(value, ec);
95 else {
96 // We make a copy here because entity of "value" argument can be Document::m_title,
97 // which goes empty during removeChildren() invocation below,
98 // which causes HTMLTitleElement::childrenChanged(), which ends up Document::setTitle().
99 String valueCopy(value);
100
101 if (numChildren > 0)
102 removeChildren();
103
104 appendChild(document()->createTextNode(valueCopy.impl()), ec);
105 }
106 }
107
108 }
109