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 "AccessibilityARIAGridCell.h" 31 32 #include "AccessibilityObject.h" 33 #include "AccessibilityTable.h" 34 #include "AccessibilityTableRow.h" 35 36 using namespace std; 37 38 namespace WebCore { 39 40 AccessibilityARIAGridCell::AccessibilityARIAGridCell(RenderObject* renderer) 41 : AccessibilityTableCell(renderer) 42 { 43 } 44 45 AccessibilityARIAGridCell::~AccessibilityARIAGridCell() 46 { 47 } 48 49 PassRefPtr<AccessibilityARIAGridCell> AccessibilityARIAGridCell::create(RenderObject* renderer) 50 { 51 return adoptRef(new AccessibilityARIAGridCell(renderer)); 52 } 53 54 AccessibilityObject* AccessibilityARIAGridCell::parentTable() const 55 { 56 AccessibilityObject* parent = parentObjectUnignored(); 57 if (!parent) 58 return 0; 59 60 if (parent->isAccessibilityTable()) 61 return parent; 62 63 // It could happen that we hadn't reached the parent table yet (in 64 // case objects for rows were not ignoring accessibility) so for 65 // that reason we need to run parentObjectUnignored once again. 66 parent = parent->parentObjectUnignored(); 67 if (!parent || !parent->isAccessibilityTable()) 68 return 0; 69 70 return parent; 71 } 72 73 void AccessibilityARIAGridCell::rowIndexRange(pair<int, int>& rowRange) 74 { 75 AccessibilityObject* parent = parentObjectUnignored(); 76 if (!parent) 77 return; 78 79 if (parent->isTableRow()) { 80 // We already got a table row, use its API. 81 rowRange.first = static_cast<AccessibilityTableRow*>(parent)->rowIndex(); 82 } else if (parent->isAccessibilityTable()) { 83 // We reached the parent table, so we need to inspect its 84 // children to determine the row index for the cell in it. 85 unsigned columnCount = static_cast<AccessibilityTable*>(parent)->columnCount(); 86 if (!columnCount) 87 return; 88 89 AccessibilityChildrenVector siblings = parent->children(); 90 unsigned childrenSize = siblings.size(); 91 for (unsigned k = 0; k < childrenSize; ++k) { 92 if (siblings[k].get() == this) { 93 rowRange.first = k / columnCount; 94 break; 95 } 96 } 97 } 98 99 // as far as I can tell, grid cells cannot span rows 100 rowRange.second = 1; 101 } 102 103 void AccessibilityARIAGridCell::columnIndexRange(pair<int, int>& columnRange) 104 { 105 AccessibilityObject* parent = parentObjectUnignored(); 106 if (!parent) 107 return; 108 109 if (!parent->isTableRow() && !parent->isAccessibilityTable()) 110 return; 111 112 AccessibilityChildrenVector siblings = parent->children(); 113 unsigned childrenSize = siblings.size(); 114 for (unsigned k = 0; k < childrenSize; ++k) { 115 if (siblings[k].get() == this) { 116 columnRange.first = k; 117 break; 118 } 119 } 120 121 // as far as I can tell, grid cells cannot span columns 122 columnRange.second = 1; 123 } 124 125 } // namespace WebCore 126