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      1 /*
      2  * Copyright (C) 2010 Apple 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
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "core/accessibility/AXMenuList.h"
     28 
     29 #include "core/accessibility/AXMenuListPopup.h"
     30 #include "core/accessibility/AXObjectCache.h"
     31 #include "core/rendering/RenderMenuList.h"
     32 
     33 namespace WebCore {
     34 
     35 AXMenuList::AXMenuList(RenderMenuList* renderer)
     36     : AXRenderObject(renderer)
     37 {
     38 }
     39 
     40 PassRefPtr<AXMenuList> AXMenuList::create(RenderMenuList* renderer)
     41 {
     42     return adoptRef(new AXMenuList(renderer));
     43 }
     44 
     45 bool AXMenuList::press() const
     46 {
     47     RenderMenuList* menuList = toRenderMenuList(m_renderer);
     48     if (menuList->popupIsVisible())
     49         menuList->hidePopup();
     50     else
     51         menuList->showPopup();
     52     return true;
     53 }
     54 
     55 void AXMenuList::addChildren()
     56 {
     57     m_haveChildren = true;
     58 
     59     AXObjectCache* cache = m_renderer->document().axObjectCache();
     60 
     61     AXObject* list = cache->getOrCreate(MenuListPopupRole);
     62     if (!list)
     63         return;
     64 
     65     toAXMockObject(list)->setParent(this);
     66     if (list->accessibilityIsIgnored()) {
     67         cache->remove(list->axObjectID());
     68         return;
     69     }
     70 
     71     m_children.append(list);
     72 
     73     list->addChildren();
     74 }
     75 
     76 void AXMenuList::childrenChanged()
     77 {
     78     if (m_children.isEmpty())
     79         return;
     80 
     81     ASSERT(m_children.size() == 1);
     82     m_children[0]->childrenChanged();
     83 }
     84 
     85 bool AXMenuList::isCollapsed() const
     86 {
     87     return !toRenderMenuList(m_renderer)->popupIsVisible();
     88 }
     89 
     90 bool AXMenuList::canSetFocusAttribute() const
     91 {
     92     if (!node())
     93         return false;
     94 
     95     return !toElement(node())->isDisabledFormControl();
     96 }
     97 
     98 void AXMenuList::didUpdateActiveOption(int optionIndex)
     99 {
    100     RefPtrWillBeRawPtr<Document> document(m_renderer->document());
    101     AXObjectCache* cache = document->axObjectCache();
    102 
    103     const AccessibilityChildrenVector& childObjects = children();
    104     if (!childObjects.isEmpty()) {
    105         ASSERT(childObjects.size() == 1);
    106         ASSERT(childObjects[0]->isMenuListPopup());
    107 
    108         if (childObjects[0]->isMenuListPopup()) {
    109             if (AXMenuListPopup* popup = toAXMenuListPopup(childObjects[0].get()))
    110                 popup->didUpdateActiveOption(optionIndex);
    111         }
    112     }
    113 
    114     cache->postNotification(this, document.get(), AXObjectCache::AXMenuListValueChanged, true, PostSynchronously);
    115 }
    116 
    117 } // namespace WebCore
    118