Home | History | Annotate | Download | only in accessibility 
      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 "AccessibilityMenuListOption.h"
     28 
     29 #include "AXObjectCache.h"
     30 #include "AccessibilityMenuListPopup.h"
     31 #include "HTMLNames.h"
     32 #include "HTMLOptionElement.h"
     33 
     34 namespace WebCore {
     35 
     36 using namespace HTMLNames;
     37 
     38 AccessibilityMenuListOption::AccessibilityMenuListOption()
     39     : m_popup(0)
     40 {
     41 }
     42 
     43 void AccessibilityMenuListOption::setElement(HTMLElement* element)
     44 {
     45     ASSERT_ARG(element, element->hasTagName(optionTag));
     46     m_element = element;
     47 }
     48 
     49 Element* AccessibilityMenuListOption::actionElement() const
     50 {
     51     return m_element.get();
     52 }
     53 
     54 AccessibilityObject* AccessibilityMenuListOption::parentObject() const
     55 {
     56     return m_popup;
     57 }
     58 
     59 bool AccessibilityMenuListOption::isEnabled() const
     60 {
     61     // disabled() returns true if the parent <select> element is disabled,
     62     // which we don't want.
     63     return !static_cast<HTMLOptionElement*>(m_element.get())->ownElementDisabled();
     64 }
     65 
     66 bool AccessibilityMenuListOption::isVisible() const
     67 {
     68     // In a single-option select with the popup collapsed, only the selected
     69     // item is considered visible.
     70     return !m_popup->isOffScreen() || isSelected();
     71 }
     72 
     73 bool AccessibilityMenuListOption::isOffScreen() const
     74 {
     75     // Invisible list options are considered to be offscreen.
     76     return !isVisible();
     77 }
     78 
     79 bool AccessibilityMenuListOption::isSelected() const
     80 {
     81     return static_cast<HTMLOptionElement*>(m_element.get())->selected();
     82 }
     83 
     84 void AccessibilityMenuListOption::setSelected(bool b)
     85 {
     86     if (!canSetSelectedAttribute())
     87         return;
     88 
     89     static_cast<HTMLOptionElement*>(m_element.get())->setSelected(b);
     90 }
     91 
     92 String AccessibilityMenuListOption::nameForMSAA() const
     93 {
     94     return static_cast<HTMLOptionElement*>(m_element.get())->text();
     95 }
     96 
     97 bool AccessibilityMenuListOption::canSetSelectedAttribute() const
     98 {
     99     return isEnabled();
    100 }
    101 
    102 IntRect AccessibilityMenuListOption::elementRect() const
    103 {
    104     AccessibilityObject* parent = parentObject();
    105     ASSERT(parent->isMenuListPopup());
    106 
    107     AccessibilityObject* grandparent = parent->parentObject();
    108     ASSERT(grandparent->isMenuList());
    109 
    110     return grandparent->elementRect();
    111 }
    112 
    113 } // namespace WebCore
    114