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 "AccessibilityMenuListPopup.h"
28
29 #include "AXObjectCache.h"
30 #include "AccessibilityMenuList.h"
31 #include "AccessibilityMenuListOption.h"
32 #include "HTMLNames.h"
33 #include "HTMLSelectElement.h"
34 #include "RenderMenuList.h"
35
36 namespace WebCore {
37
38 using namespace HTMLNames;
39
AccessibilityMenuListPopup()40 AccessibilityMenuListPopup::AccessibilityMenuListPopup()
41 : m_menuList(0)
42 {
43 }
44
isVisible() const45 bool AccessibilityMenuListPopup::isVisible() const
46 {
47 return false;
48 }
49
isOffScreen() const50 bool AccessibilityMenuListPopup::isOffScreen() const
51 {
52 return m_menuList->isCollapsed();
53 }
54
parentObject() const55 AccessibilityObject* AccessibilityMenuListPopup::parentObject() const
56 {
57 return m_menuList;
58 }
59
isEnabled() const60 bool AccessibilityMenuListPopup::isEnabled() const
61 {
62 return m_menuList->isEnabled();
63 }
64
menuListOptionAccessibilityObject(HTMLElement * element) const65 AccessibilityMenuListOption* AccessibilityMenuListPopup::menuListOptionAccessibilityObject(HTMLElement* element) const
66 {
67 if (!element || !element->hasTagName(optionTag))
68 return 0;
69
70 AccessibilityObject* object = m_menuList->renderer()->document()->axObjectCache()->getOrCreate(MenuListOptionRole);
71 ASSERT(object->isMenuListOption());
72
73 AccessibilityMenuListOption* option = static_cast<AccessibilityMenuListOption*>(object);
74 option->setElement(element);
75
76 return option;
77 }
78
press() const79 bool AccessibilityMenuListPopup::press() const
80 {
81 m_menuList->press();
82 return true;
83 }
84
addChildren()85 void AccessibilityMenuListPopup::addChildren()
86 {
87 Node* selectNode = m_menuList->renderer()->node();
88 if (!selectNode)
89 return;
90
91 m_haveChildren = true;
92
93 ASSERT(selectNode->hasTagName(selectTag));
94
95 const Vector<Element*>& listItems = static_cast<HTMLSelectElement*>(selectNode)->listItems();
96 unsigned length = listItems.size();
97 for (unsigned i = 0; i < length; i++) {
98 // The cast to HTMLElement below is safe because the only other possible listItem type
99 // would be a WMLElement, but WML builds don't use accessbility features at all.
100 AccessibilityMenuListOption* option = menuListOptionAccessibilityObject(toHTMLElement(listItems[i]));
101 if (option) {
102 option->setParent(this);
103 m_children.append(option);
104 }
105 }
106 }
107
childrenChanged()108 void AccessibilityMenuListPopup::childrenChanged()
109 {
110 for (size_t i = m_children.size(); i > 0 ; --i) {
111 AccessibilityObject* child = m_children[i - 1].get();
112 if (child->actionElement() && !child->actionElement()->attached()) {
113 m_menuList->renderer()->document()->axObjectCache()->remove(child->axObjectID());
114 m_children.remove(i - 1);
115 }
116 }
117 }
118
setMenuList(AccessibilityMenuList * menuList)119 void AccessibilityMenuListPopup::setMenuList(AccessibilityMenuList* menuList)
120 {
121 ASSERT_ARG(menuList, menuList);
122 ASSERT(!m_menuList);
123 m_menuList = menuList;
124 }
125
126 } // namespace WebCore
127