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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/AXTableColumn.h" | |
| 31 | |
| 32 #include "core/accessibility/AXObjectCacheImpl.h" | |
| 33 #include "core/accessibility/AXTableCell.h" | |
| 34 #include "core/rendering/RenderTableCell.h" | |
| 35 | |
| 36 | |
| 37 namespace blink { | |
| 38 | |
| 39 using namespace HTMLNames; | |
| 40 | |
| 41 AXTableColumn::AXTableColumn() | |
| 42 { | |
| 43 } | |
| 44 | |
| 45 AXTableColumn::~AXTableColumn() | |
| 46 { | |
| 47 } | |
| 48 | |
| 49 PassRefPtr<AXTableColumn> AXTableColumn::create() | |
| 50 { | |
| 51 return adoptRef(new AXTableColumn()); | |
| 52 } | |
| 53 | |
| 54 void AXTableColumn::setParent(AXObject* parent) | |
| 55 { | |
| 56 AXMockObject::setParent(parent); | |
| 57 | |
| 58 clearChildren(); | |
| 59 } | |
| 60 | |
| 61 LayoutRect AXTableColumn::elementRect() const | |
| 62 { | |
| 63 // this will be filled in when addChildren is called | |
| 64 return m_columnRect; | |
| 65 } | |
| 66 | |
| 67 AXObject* AXTableColumn::headerObject() | |
| 68 { | |
| 69 if (!m_parent) | |
| 70 return 0; | |
| 71 | |
| 72 RenderObject* renderer = m_parent->renderer(); | |
| 73 if (!renderer) | |
| 74 return 0; | |
| 75 | |
| 76 if (!m_parent->isAXTable()) | |
| 77 return 0; | |
| 78 | |
| 79 AXTable* parentTable = toAXTable(m_parent); | |
| 80 if (parentTable->isAriaTable()) { | |
| 81 AccessibilityChildrenVector rowChildren = children(); | |
| 82 unsigned childrenCount = rowChildren.size(); | |
| 83 for (unsigned i = 0; i < childrenCount; ++i) { | |
| 84 AXObject* cell = rowChildren[i].get(); | |
| 85 if (cell->ariaRoleAttribute() == ColumnHeaderRole) | |
| 86 return cell; | |
| 87 } | |
| 88 | |
| 89 return 0; | |
| 90 } | |
| 91 | |
| 92 if (!renderer->isTable()) | |
| 93 return 0; | |
| 94 | |
| 95 RenderTable* table = toRenderTable(renderer); | |
| 96 | |
| 97 AXObject* headerObject = 0; | |
| 98 | |
| 99 // try the <thead> section first. this doesn't require th tags | |
| 100 headerObject = headerObjectForSection(table->header(), false); | |
| 101 | |
| 102 if (headerObject) | |
| 103 return headerObject; | |
| 104 | |
| 105 // now try for <th> tags in the first body | |
| 106 headerObject = headerObjectForSection(table->firstBody(), true); | |
| 107 | |
| 108 return headerObject; | |
| 109 } | |
| 110 | |
| 111 AXObject* AXTableColumn::headerObjectForSection(RenderTableSection* section, boo
l thTagRequired) | |
| 112 { | |
| 113 if (!section) | |
| 114 return 0; | |
| 115 | |
| 116 unsigned numCols = section->numColumns(); | |
| 117 if (m_columnIndex >= numCols) | |
| 118 return 0; | |
| 119 | |
| 120 if (!section->numRows()) | |
| 121 return 0; | |
| 122 | |
| 123 RenderTableCell* cell = 0; | |
| 124 // also account for cells that have a span | |
| 125 for (int testCol = m_columnIndex; testCol >= 0; --testCol) { | |
| 126 RenderTableCell* testCell = section->primaryCellAt(0, testCol); | |
| 127 if (!testCell) | |
| 128 continue; | |
| 129 | |
| 130 // we've reached a cell that doesn't even overlap our column | |
| 131 // it can't be our header | |
| 132 if ((testCell->col() + (testCell->colSpan()-1)) < m_columnIndex) | |
| 133 break; | |
| 134 | |
| 135 Node* node = testCell->node(); | |
| 136 if (!node) | |
| 137 continue; | |
| 138 | |
| 139 if (thTagRequired && !node->hasTagName(thTag)) | |
| 140 continue; | |
| 141 | |
| 142 cell = testCell; | |
| 143 } | |
| 144 | |
| 145 if (!cell) | |
| 146 return 0; | |
| 147 | |
| 148 return axObjectCache()->getOrCreate(cell); | |
| 149 } | |
| 150 | |
| 151 bool AXTableColumn::computeAccessibilityIsIgnored() const | |
| 152 { | |
| 153 if (!m_parent) | |
| 154 return true; | |
| 155 | |
| 156 return m_parent->accessibilityIsIgnored(); | |
| 157 } | |
| 158 | |
| 159 void AXTableColumn::addChildren() | |
| 160 { | |
| 161 ASSERT(!m_haveChildren); | |
| 162 | |
| 163 m_haveChildren = true; | |
| 164 if (!m_parent || !m_parent->isAXTable()) | |
| 165 return; | |
| 166 | |
| 167 AXTable* parentTable = toAXTable(m_parent); | |
| 168 int numRows = parentTable->rowCount(); | |
| 169 | |
| 170 for (int i = 0; i < numRows; i++) { | |
| 171 AXTableCell* cell = parentTable->cellForColumnAndRow(m_columnIndex, i); | |
| 172 if (!cell) | |
| 173 continue; | |
| 174 | |
| 175 // make sure the last one isn't the same as this one (rowspan cells) | |
| 176 if (m_children.size() > 0 && m_children.last() == cell) | |
| 177 continue; | |
| 178 | |
| 179 m_children.append(cell); | |
| 180 m_columnRect.unite(cell->elementRect()); | |
| 181 } | |
| 182 } | |
| 183 | |
| 184 } // namespace blink | |
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Chromium Code Reviews
Issue 713933002:
Create Source/modules/accessibility/ and move most of core/accessibility/* into it (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink.git@master