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      1 /*
      2  * Copyright (C) 2010 Google Inc. All rights reserved.
      3  * Copyright (C) 2011 Apple Inc. All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are
      7  * met:
      8  *
      9  *     * Redistributions of source code must retain the above copyright
     10  * notice, this list of conditions and the following disclaimer.
     11  *     * Redistributions in binary form must reproduce the above
     12  * copyright notice, this list of conditions and the following disclaimer
     13  * in the documentation and/or other materials provided with the
     14  * distribution.
     15  *     * Neither the name of Google Inc. nor the names of its
     16  * contributors may be used to endorse or promote products derived from
     17  * this software without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     20  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     22  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     23  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     24  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     25  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     29  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include "config.h"
     33 #include "core/html/HiddenInputType.h"
     34 
     35 #include "HTMLNames.h"
     36 #include "core/html/FormController.h"
     37 #include "core/html/FormDataList.h"
     38 #include "core/html/HTMLInputElement.h"
     39 #include "core/html/InputTypeNames.h"
     40 #include "wtf/PassOwnPtr.h"
     41 
     42 namespace WebCore {
     43 
     44 using namespace HTMLNames;
     45 
     46 PassOwnPtr<InputType> HiddenInputType::create(HTMLInputElement* element)
     47 {
     48     return adoptPtr(new HiddenInputType(element));
     49 }
     50 
     51 const AtomicString& HiddenInputType::formControlType() const
     52 {
     53     return InputTypeNames::hidden();
     54 }
     55 
     56 FormControlState HiddenInputType::saveFormControlState() const
     57 {
     58     // valueAttributeWasUpdatedAfterParsing() never be true for form
     59     // controls create by createElement() or cloneNode(). It's ok for
     60     // now because we restore values only to form controls created by
     61     // parsing.
     62     return element()->valueAttributeWasUpdatedAfterParsing() ? FormControlState(element()->value()) : FormControlState();
     63 }
     64 
     65 void HiddenInputType::restoreFormControlState(const FormControlState& state)
     66 {
     67     element()->setAttribute(valueAttr, state[0]);
     68 }
     69 
     70 bool HiddenInputType::supportsValidation() const
     71 {
     72     return false;
     73 }
     74 
     75 RenderObject* HiddenInputType::createRenderer(RenderStyle*) const
     76 {
     77     ASSERT_NOT_REACHED();
     78     return 0;
     79 }
     80 
     81 void HiddenInputType::accessKeyAction(bool)
     82 {
     83 }
     84 
     85 bool HiddenInputType::rendererIsNeeded()
     86 {
     87     return false;
     88 }
     89 
     90 bool HiddenInputType::storesValueSeparateFromAttribute()
     91 {
     92     return false;
     93 }
     94 
     95 void HiddenInputType::setValue(const String& sanitizedValue, bool, TextFieldEventBehavior)
     96 {
     97     element()->setAttribute(valueAttr, sanitizedValue);
     98 }
     99 
    100 bool HiddenInputType::isHiddenType() const
    101 {
    102     return true;
    103 }
    104 
    105 bool HiddenInputType::appendFormData(FormDataList& encoding, bool isMultipartForm) const
    106 {
    107     if (equalIgnoringCase(element()->name(), "_charset_")) {
    108         encoding.appendData(element()->name(), String(encoding.encoding().name()));
    109         return true;
    110     }
    111     return InputType::appendFormData(encoding, isMultipartForm);
    112 }
    113 
    114 bool HiddenInputType::shouldRespectHeightAndWidthAttributes()
    115 {
    116     return true;
    117 }
    118 
    119 } // namespace WebCore
    120