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 

    44 using namespace WebCore;

    45 

    46 namespace {

    47 

    48 template <class HTMLNodeType>

    49 HTMLNodeType* 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 

    60 namespace WebKit {

    61 

    62 HTMLInputElement* toHTMLInputElement(Node* node)

    63 {

    64     return toHTMLElement<HTMLInputElement>(node, HTMLNames::inputTag);

    65 }

    66 

    67 HTMLLinkElement* toHTMLLinkElement(Node* node)

    68 {

    69     return toHTMLElement<HTMLLinkElement>(node, HTMLNames::linkTag);

    70 }

    71 

    72 HTMLMetaElement* toHTMLMetaElement(Node* node)

    73 {

    74     return toHTMLElement<HTMLMetaElement>(node, HTMLNames::metaTag);

    75 }

    76 

    77 HTMLOptionElement* toHTMLOptionElement(Node* node)

    78 {

    79     return toHTMLElement<HTMLOptionElement>(node, HTMLNames::optionTag);

    80 }

    81 

    82 String nameOfInputElement(HTMLInputElement* element)

    83 {

    84     return WebInputElement(element).nameForAutofill();

    85 }

    86 

    87 bool 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->inputType() == HTMLInputElement::IMAGE)

   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