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 "HTMLTableRowsCollection.h"
31
32 #include "HTMLNames.h"
33 #include "HTMLTableElement.h"
34 #include "HTMLTableRowElement.h"
35
36 namespace WebCore {
37
38 using namespace HTMLNames;
39
isInHead(Element * row)40 static bool isInHead(Element* row)
41 {
42 return row->parent() && static_cast<Element*>(row->parent())->hasLocalName(theadTag);
43 }
44
isInBody(Element * row)45 static bool isInBody(Element* row)
46 {
47 return row->parent() && static_cast<Element*>(row->parent())->hasLocalName(tbodyTag);
48 }
49
isInFoot(Element * row)50 static bool isInFoot(Element* row)
51 {
52 return row->parent() && static_cast<Element*>(row->parent())->hasLocalName(tfootTag);
53 }
54
rowAfter(HTMLTableElement * table,HTMLTableRowElement * previous)55 HTMLTableRowElement* HTMLTableRowsCollection::rowAfter(HTMLTableElement* table, HTMLTableRowElement* previous)
56 {
57 Node* child = 0;
58
59 // Start by looking for the next row in this section.
60 // Continue only if there is none.
61 if (previous && previous->parent() != table) {
62 for (child = previous->nextSibling(); child; child = child->nextSibling()) {
63 if (child->hasTagName(trTag))
64 return static_cast<HTMLTableRowElement*>(child);
65 }
66 }
67
68 // If still looking at head sections, find the first row in the next head section.
69 if (!previous)
70 child = table->firstChild();
71 else if (isInHead(previous))
72 child = previous->parent()->nextSibling();
73 for (; child; child = child->nextSibling()) {
74 if (child->hasTagName(theadTag)) {
75 for (Node* grandchild = child->firstChild(); grandchild; grandchild = grandchild->nextSibling()) {
76 if (grandchild->hasTagName(trTag))
77 return static_cast<HTMLTableRowElement*>(grandchild);
78 }
79 }
80 }
81
82 // If still looking at top level and bodies, find the next row in top level or the first in the next body section.
83 if (!previous || isInHead(previous))
84 child = table->firstChild();
85 else if (previous->parent() == table)
86 child = previous->nextSibling();
87 else if (isInBody(previous))
88 child = previous->parent()->nextSibling();
89 for (; child; child = child->nextSibling()) {
90 if (child->hasTagName(trTag))
91 return static_cast<HTMLTableRowElement*>(child);
92 if (child->hasTagName(tbodyTag)) {
93 for (Node* grandchild = child->firstChild(); grandchild; grandchild = grandchild->nextSibling()) {
94 if (grandchild->hasTagName(trTag))
95 return static_cast<HTMLTableRowElement*>(grandchild);
96 }
97 }
98 }
99
100 // Find the first row in the next foot section.
101 if (!previous || !isInFoot(previous))
102 child = table->firstChild();
103 else
104 child = previous->parent()->nextSibling();
105 for (; child; child = child->nextSibling()) {
106 if (child->hasTagName(tfootTag)) {
107 for (Node* grandchild = child->firstChild(); grandchild; grandchild = grandchild->nextSibling()) {
108 if (grandchild->hasTagName(trTag))
109 return static_cast<HTMLTableRowElement*>(grandchild);
110 }
111 }
112 }
113
114 return 0;
115 }
116
lastRow(HTMLTableElement * table)117 HTMLTableRowElement* HTMLTableRowsCollection::lastRow(HTMLTableElement* table)
118 {
119 for (Node* child = table->lastChild(); child; child = child->previousSibling()) {
120 if (child->hasTagName(tfootTag)) {
121 for (Node* grandchild = child->lastChild(); grandchild; grandchild = grandchild->previousSibling()) {
122 if (grandchild->hasTagName(trTag))
123 return static_cast<HTMLTableRowElement*>(grandchild);
124 }
125 }
126 }
127
128 for (Node* child = table->lastChild(); child; child = child->previousSibling()) {
129 if (child->hasTagName(trTag))
130 return static_cast<HTMLTableRowElement*>(child);
131 if (child->hasTagName(tbodyTag)) {
132 for (Node* grandchild = child->lastChild(); grandchild; grandchild = grandchild->previousSibling()) {
133 if (grandchild->hasTagName(trTag))
134 return static_cast<HTMLTableRowElement*>(grandchild);
135 }
136 }
137 }
138
139 for (Node* child = table->lastChild(); child; child = child->previousSibling()) {
140 if (child->hasTagName(theadTag)) {
141 for (Node* grandchild = child->lastChild(); grandchild; grandchild = grandchild->previousSibling()) {
142 if (grandchild->hasTagName(trTag))
143 return static_cast<HTMLTableRowElement*>(grandchild);
144 }
145 }
146 }
147
148 return 0;
149 }
150
HTMLTableRowsCollection(PassRefPtr<HTMLTableElement> table)151 HTMLTableRowsCollection::HTMLTableRowsCollection(PassRefPtr<HTMLTableElement> table)
152 : HTMLCollection(table, OtherCollection, 0)
153 {
154 }
155
create(PassRefPtr<HTMLTableElement> table)156 PassRefPtr<HTMLTableRowsCollection> HTMLTableRowsCollection::create(PassRefPtr<HTMLTableElement> table)
157 {
158 return adoptRef(new HTMLTableRowsCollection(table));
159 }
160
itemAfter(Element * previous) const161 Element* HTMLTableRowsCollection::itemAfter(Element* previous) const
162 {
163 ASSERT(!previous || previous->hasLocalName(trTag));
164 return rowAfter(static_cast<HTMLTableElement*>(base()), static_cast<HTMLTableRowElement*>(previous));
165 }
166
167 }
168