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      1 /*
      2  * Copyright (C) 2010, 2012 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 "core/html/forms/ValidationMessage.h"
     33 
     34 #include "core/dom/Document.h"
     35 #include "core/html/HTMLFormControlElement.h"
     36 #include "core/page/Page.h"
     37 #include "core/page/ValidationMessageClient.h"
     38 #include "wtf/PassOwnPtr.h"
     39 
     40 namespace WebCore {
     41 
     42 ALWAYS_INLINE ValidationMessage::ValidationMessage(HTMLFormControlElement* element)
     43     : m_element(element)
     44 {
     45     ASSERT(m_element);
     46 }
     47 
     48 ValidationMessage::~ValidationMessage()
     49 {
     50 }
     51 
     52 PassOwnPtr<ValidationMessage> ValidationMessage::create(HTMLFormControlElement* element)
     53 {
     54     return adoptPtr(new ValidationMessage(element));
     55 }
     56 
     57 ValidationMessageClient* ValidationMessage::validationMessageClient() const
     58 {
     59     Page* page = m_element->document().page();
     60     if (!page)
     61         return 0;
     62 
     63     return &page->validationMessageClient();
     64 }
     65 
     66 void ValidationMessage::updateValidationMessage(const String& message)
     67 {
     68     ValidationMessageClient* client = validationMessageClient();
     69     if (!client)
     70         return;
     71     if (message.isEmpty())
     72         requestToHideMessage();
     73     else
     74         client->showValidationMessage(*m_element, message);
     75 }
     76 
     77 void ValidationMessage::requestToHideMessage()
     78 {
     79     if (ValidationMessageClient* client = validationMessageClient())
     80         client->hideValidationMessage(*m_element);
     81 }
     82 
     83 bool ValidationMessage::isVisible() const
     84 {
     85     if (ValidationMessageClient* client = validationMessageClient())
     86         return client->isValidationMessageVisible(*m_element);
     87     return false;
     88 }
     89 
     90 } // namespace WebCore
     91