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      1 /*
      2  * Copyright (C) 2008 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  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include "config.h"
     30 #include "core/accessibility/AccessibilityImageMapLink.h"
     31 
     32 #include "core/accessibility/AXObjectCache.h"
     33 #include "core/accessibility/AccessibilityRenderObject.h"
     34 
     35 namespace WebCore {
     36 
     37 using namespace HTMLNames;
     38 
     39 AccessibilityImageMapLink::AccessibilityImageMapLink()
     40     : m_areaElement(0)
     41     , m_mapElement(0)
     42 {
     43 }
     44 
     45 AccessibilityImageMapLink::~AccessibilityImageMapLink()
     46 {
     47 }
     48 
     49 PassRefPtr<AccessibilityImageMapLink> AccessibilityImageMapLink::create()
     50 {
     51     return adoptRef(new AccessibilityImageMapLink());
     52 }
     53 
     54 AccessibilityObject* AccessibilityImageMapLink::parentObject() const
     55 {
     56     if (m_parent)
     57         return m_parent;
     58 
     59     if (!m_mapElement.get() || !m_mapElement->renderer())
     60         return 0;
     61 
     62     return m_mapElement->document()->axObjectCache()->getOrCreate(m_mapElement->renderer());
     63 }
     64 
     65 AccessibilityRole AccessibilityImageMapLink::roleValue() const
     66 {
     67     if (!m_areaElement)
     68         return WebCoreLinkRole;
     69 
     70     const AtomicString& ariaRole = getAttribute(roleAttr);
     71     if (!ariaRole.isEmpty())
     72         return AccessibilityObject::ariaRoleToWebCoreRole(ariaRole);
     73 
     74     return WebCoreLinkRole;
     75 }
     76 
     77 Element* AccessibilityImageMapLink::actionElement() const
     78 {
     79     return anchorElement();
     80 }
     81 
     82 Element* AccessibilityImageMapLink::anchorElement() const
     83 {
     84     return m_areaElement.get();
     85 }
     86 
     87 KURL AccessibilityImageMapLink::url() const
     88 {
     89     if (!m_areaElement.get())
     90         return KURL();
     91 
     92     return m_areaElement->href();
     93 }
     94 
     95 void AccessibilityImageMapLink::accessibilityText(Vector<AccessibilityText>& textOrder)
     96 {
     97     String description = accessibilityDescription();
     98     if (!description.isEmpty())
     99         textOrder.append(AccessibilityText(description, AlternativeText));
    100 
    101     const AtomicString& titleText = getAttribute(titleAttr);
    102     if (!titleText.isEmpty())
    103         textOrder.append(AccessibilityText(titleText, TitleTagText));
    104 
    105     const AtomicString& summary = getAttribute(summaryAttr);
    106     if (!summary.isEmpty())
    107         textOrder.append(AccessibilityText(summary, SummaryText));
    108 }
    109 
    110 String AccessibilityImageMapLink::accessibilityDescription() const
    111 {
    112     const AtomicString& ariaLabel = getAttribute(aria_labelAttr);
    113     if (!ariaLabel.isEmpty())
    114         return ariaLabel;
    115     const AtomicString& alt = getAttribute(altAttr);
    116     if (!alt.isEmpty())
    117         return alt;
    118 
    119     return String();
    120 }
    121 
    122 String AccessibilityImageMapLink::title() const
    123 {
    124     const AtomicString& title = getAttribute(titleAttr);
    125     if (!title.isEmpty())
    126         return title;
    127     const AtomicString& summary = getAttribute(summaryAttr);
    128     if (!summary.isEmpty())
    129         return summary;
    130 
    131     return String();
    132 }
    133 
    134 LayoutRect AccessibilityImageMapLink::elementRect() const
    135 {
    136     if (!m_mapElement.get() || !m_areaElement.get())
    137         return LayoutRect();
    138 
    139     RenderObject* renderer;
    140     if (m_parent && m_parent->isAccessibilityRenderObject())
    141         renderer = static_cast<AccessibilityRenderObject*>(m_parent)->renderer();
    142     else
    143         renderer = m_mapElement->renderer();
    144 
    145     if (!renderer)
    146         return LayoutRect();
    147 
    148     return m_areaElement->computeRect(renderer);
    149 }
    150 
    151 } // namespace WebCore
    152