DOMUtilitiesPrivate.cpp revision 65f03d4f644ce73618e5f4f50dd694b26f55ae12 
1/*
2 * Copyright (C) 2009 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "config.h"
32#include "DOMUtilitiesPrivate.h"
33
34#include "Element.h"
35#include "HTMLInputElement.h"
36#include "HTMLLinkElement.h"
37#include "HTMLMetaElement.h"
38#include "HTMLNames.h"
39#include "HTMLOptionElement.h"
40#include "Node.h"
41
42#include "WebInputElement.h"
43
44using namespace WebCore;
45
46namespace {
47
48template <class HTMLNodeType>
49HTMLNodeType* toHTMLElement(Node* node, const QualifiedName& name)
50{
51    if (node->isHTMLElement()
52        && static_cast<HTMLElement*>(node)->hasTagName(name)) {
53        return static_cast<HTMLNodeType*>(node);
54    }
55    return 0;
56}
57
58} // namespace
59
60namespace WebKit {
61
62HTMLInputElement* toHTMLInputElement(Node* node)
63{
64    return toHTMLElement<HTMLInputElement>(node, HTMLNames::inputTag);
65}
66
67HTMLLinkElement* toHTMLLinkElement(Node* node)
68{
69    return toHTMLElement<HTMLLinkElement>(node, HTMLNames::linkTag);
70}
71
72HTMLMetaElement* toHTMLMetaElement(Node* node)
73{
74    return toHTMLElement<HTMLMetaElement>(node, HTMLNames::metaTag);
75}
76
77HTMLOptionElement* toHTMLOptionElement(Node* node)
78{
79    return toHTMLElement<HTMLOptionElement>(node, HTMLNames::optionTag);
80}
81
82String nameOfInputElement(HTMLInputElement* element)
83{
84    return WebInputElement(element).nameForAutofill();
85}
86
87bool elementHasLegalLinkAttribute(const Element* element,
88                                  const QualifiedName& attrName)
89{
90    if (attrName == HTMLNames::srcAttr) {
91        // Check src attribute.
92        if (element->hasTagName(HTMLNames::imgTag)
93            || element->hasTagName(HTMLNames::scriptTag)
94            || element->hasTagName(HTMLNames::iframeTag)
95            || element->hasTagName(HTMLNames::frameTag))
96            return true;
97        if (element->hasTagName(HTMLNames::inputTag)) {
98            const HTMLInputElement* input =
99            static_cast<const HTMLInputElement*>(element);
100            if (input->isImageButton())
101                return true;
102        }
103    } else if (attrName == HTMLNames::hrefAttr) {
104        // Check href attribute.
105        if (element->hasTagName(HTMLNames::linkTag)
106            || element->hasTagName(HTMLNames::aTag)
107            || element->hasTagName(HTMLNames::areaTag))
108            return true;
109    } else if (attrName == HTMLNames::actionAttr) {
110        if (element->hasTagName(HTMLNames::formTag))
111            return true;
112    } else if (attrName == HTMLNames::backgroundAttr) {
113        if (element->hasTagName(HTMLNames::bodyTag)
114            || element->hasTagName(HTMLNames::tableTag)
115            || element->hasTagName(HTMLNames::trTag)
116            || element->hasTagName(HTMLNames::tdTag))
117            return true;
118    } else if (attrName == HTMLNames::citeAttr) {
119        if (element->hasTagName(HTMLNames::blockquoteTag)
120            || element->hasTagName(HTMLNames::qTag)
121            || element->hasTagName(HTMLNames::delTag)
122            || element->hasTagName(HTMLNames::insTag))
123            return true;
124    } else if (attrName == HTMLNames::classidAttr
125               || attrName == HTMLNames::dataAttr) {
126        if (element->hasTagName(HTMLNames::objectTag))
127            return true;
128    } else if (attrName == HTMLNames::codebaseAttr) {
129        if (element->hasTagName(HTMLNames::objectTag)
130            || element->hasTagName(HTMLNames::appletTag))
131            return true;
132    }
133    return false;
134}
135
136} // namespace WebKit
137