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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 * | |
| 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 "modules/accessibility/AXScrollbar.h" | |
| 31 | |
| 32 #include "modules/accessibility/AXObjectCacheImpl.h" | |
| 33 #include "platform/scroll/ScrollableArea.h" | |
| 34 #include "platform/scroll/Scrollbar.h" | |
| 35 | |
| 36 namespace blink { | |
| 37 | |
| 38 AXScrollbar::AXScrollbar(Scrollbar* scrollbar, AXObjectCacheImpl& axObjectCache) | |
| 39 : AXMockObject(axObjectCache) | |
| 40 , m_scrollbar(scrollbar) | |
| 41 { | |
| 42 ASSERT(scrollbar); | |
| 43 } | |
| 44 | |
| 45 AXScrollbar::~AXScrollbar() | |
| 46 { | |
| 47 ASSERT(!m_scrollbar); | |
| 48 } | |
| 49 | |
| 50 void AXScrollbar::detachFromParent() | |
| 51 { | |
| 52 m_scrollbar = nullptr; | |
| 53 AXMockObject::detachFromParent(); | |
| 54 } | |
| 55 | |
| 56 AXScrollbar* AXScrollbar::create(Scrollbar* scrollbar, AXObjectCacheImpl& axObje
ctCache) | |
| 57 { | |
| 58 return new AXScrollbar(scrollbar, axObjectCache); | |
| 59 } | |
| 60 | |
| 61 LayoutRect AXScrollbar::elementRect() const | |
| 62 { | |
| 63 if (!m_scrollbar) | |
| 64 return LayoutRect(); | |
| 65 | |
| 66 return LayoutRect(m_scrollbar->frameRect()); | |
| 67 } | |
| 68 | |
| 69 Document* AXScrollbar::document() const | |
| 70 { | |
| 71 AXObject* parent = parentObject(); | |
| 72 if (!parent) | |
| 73 return 0; | |
| 74 return parent->document(); | |
| 75 } | |
| 76 | |
| 77 AccessibilityOrientation AXScrollbar::orientation() const | |
| 78 { | |
| 79 if (!m_scrollbar) | |
| 80 return AccessibilityOrientationHorizontal; | |
| 81 | |
| 82 if (m_scrollbar->orientation() == HorizontalScrollbar) | |
| 83 return AccessibilityOrientationHorizontal; | |
| 84 if (m_scrollbar->orientation() == VerticalScrollbar) | |
| 85 return AccessibilityOrientationVertical; | |
| 86 | |
| 87 return AccessibilityOrientationVertical; | |
| 88 } | |
| 89 | |
| 90 bool AXScrollbar::isEnabled() const | |
| 91 { | |
| 92 if (!m_scrollbar) | |
| 93 return false; | |
| 94 return m_scrollbar->enabled(); | |
| 95 } | |
| 96 | |
| 97 float AXScrollbar::valueForRange() const | |
| 98 { | |
| 99 if (!m_scrollbar) | |
| 100 return 0; | |
| 101 | |
| 102 return m_scrollbar->currentPos() / m_scrollbar->maximum(); | |
| 103 } | |
| 104 | |
| 105 void AXScrollbar::setValue(float value) | |
| 106 { | |
| 107 if (!m_scrollbar) | |
| 108 return; | |
| 109 | |
| 110 if (!m_scrollbar->scrollableArea()) | |
| 111 return; | |
| 112 | |
| 113 float newValue = value * m_scrollbar->maximum(); | |
| 114 | |
| 115 // TODO(bokan): This should potentially be a UserScroll. | |
| 116 m_scrollbar->scrollableArea()->setScrollPositionSingleAxis(m_scrollbar->orie
ntation(), newValue, ProgrammaticScroll); | |
| 117 } | |
| 118 | |
| 119 DEFINE_TRACE(AXScrollbar) | |
| 120 { | |
| 121 visitor->trace(m_scrollbar); | |
| 122 AXMockObject::trace(visitor); | |
| 123 } | |
| 124 | |
| 125 } // namespace blink | |
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Chromium Code Reviews
Issue 1348503003:
One AXObjectCache per frame (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink.git@master