1/* 2 * Copyright (C) 2009 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 "AccessibilitySlider.h" 31 32#include "AXObjectCache.h" 33#include "HTMLInputElement.h" 34#include "HTMLNames.h" 35#include "RenderObject.h" 36#include "RenderSlider.h" 37#include "SliderThumbElement.h" 38 39namespace WebCore { 40 41using namespace HTMLNames; 42 43AccessibilitySlider::AccessibilitySlider(RenderObject* renderer) 44 : AccessibilityRenderObject(renderer) 45{ 46} 47 48PassRefPtr<AccessibilitySlider> AccessibilitySlider::create(RenderObject* renderer) 49{ 50 return adoptRef(new AccessibilitySlider(renderer)); 51} 52 53AccessibilityOrientation AccessibilitySlider::orientation() const 54{ 55 // Default to horizontal in the unknown case. 56 if (!m_renderer) 57 return AccessibilityOrientationHorizontal; 58 59 RenderStyle* style = m_renderer->style(); 60 if (!style) 61 return AccessibilityOrientationHorizontal; 62 63 ControlPart styleAppearance = style->appearance(); 64 switch (styleAppearance) { 65 case SliderThumbHorizontalPart: 66 case SliderHorizontalPart: 67 case MediaSliderPart: 68 case MediaFullScreenVolumeSliderPart: 69 return AccessibilityOrientationHorizontal; 70 71 case SliderThumbVerticalPart: 72 case SliderVerticalPart: 73 case MediaVolumeSliderPart: 74 return AccessibilityOrientationVertical; 75 76 default: 77 return AccessibilityOrientationHorizontal; 78 } 79} 80 81void AccessibilitySlider::addChildren() 82{ 83 ASSERT(!m_haveChildren); 84 85 m_haveChildren = true; 86 87 AXObjectCache* cache = m_renderer->document()->axObjectCache(); 88 89 AccessibilitySliderThumb* thumb = static_cast<AccessibilitySliderThumb*>(cache->getOrCreate(SliderThumbRole)); 90 thumb->setParent(this); 91 92 // Before actually adding the value indicator to the hierarchy, 93 // allow the platform to make a final decision about it. 94 if (thumb->accessibilityIsIgnored()) 95 cache->remove(thumb->axObjectID()); 96 else 97 m_children.append(thumb); 98} 99 100const AtomicString& AccessibilitySlider::getAttribute(const QualifiedName& attribute) const 101{ 102 return element()->getAttribute(attribute); 103} 104 105AccessibilityObject* AccessibilitySlider::elementAccessibilityHitTest(const IntPoint& point) const 106{ 107 if (m_children.size()) { 108 ASSERT(m_children.size() == 1); 109 if (m_children[0]->elementRect().contains(point)) 110 return m_children[0].get(); 111 } 112 113 return axObjectCache()->getOrCreate(m_renderer); 114} 115 116float AccessibilitySlider::valueForRange() const 117{ 118 return element()->value().toFloat(); 119} 120 121float AccessibilitySlider::maxValueForRange() const 122{ 123 return static_cast<float>(element()->maximum()); 124} 125 126float AccessibilitySlider::minValueForRange() const 127{ 128 return static_cast<float>(element()->minimum()); 129} 130 131void AccessibilitySlider::setValue(const String& value) 132{ 133 HTMLInputElement* input = element(); 134 135 if (input->value() == value) 136 return; 137 138 input->setValue(value); 139 140 // Fire change event manually, as RenderSlider::setValueForPosition does. 141 input->dispatchFormControlChangeEvent(); 142} 143 144HTMLInputElement* AccessibilitySlider::element() const 145{ 146 return static_cast<HTMLInputElement*>(m_renderer->node()); 147} 148 149 150AccessibilitySliderThumb::AccessibilitySliderThumb() 151{ 152} 153 154PassRefPtr<AccessibilitySliderThumb> AccessibilitySliderThumb::create() 155{ 156 return adoptRef(new AccessibilitySliderThumb()); 157} 158 159LayoutRect AccessibilitySliderThumb::elementRect() const 160{ 161 if (!m_parent) 162 return LayoutRect(); 163 164 RenderObject* sliderRenderer = m_parent->renderer(); 165 if (!sliderRenderer || !sliderRenderer->isSlider()) 166 return LayoutRect(); 167 return sliderThumbElementOf(sliderRenderer->node())->boundingBox(); 168} 169 170bool AccessibilitySliderThumb::computeAccessibilityIsIgnored() const 171{ 172 return accessibilityIsIgnoredByDefault(); 173} 174 175} // namespace WebCore 176