Move WebCore into Source
[WebKit-https.git] / Source / WebCore / html / HTMLTableRowsCollection.cpp
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
40 static bool isInHead(Element* row)
41 {
42     return row->parentNode() && static_cast<Element*>(row->parentNode())->hasLocalName(theadTag);
43 }
44
45 static bool isInBody(Element* row)
46 {
47     return row->parentNode() && static_cast<Element*>(row->parentNode())->hasLocalName(tbodyTag);
48 }
49
50 static bool isInFoot(Element* row)
51 {
52     return row->parentNode() && static_cast<Element*>(row->parentNode())->hasLocalName(tfootTag);
53 }
54
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->parentNode() != 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->parentNode()->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->parentNode() == table)
86         child = previous->nextSibling();
87     else if (isInBody(previous))
88         child = previous->parentNode()->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->parentNode()->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
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
151 HTMLTableRowsCollection::HTMLTableRowsCollection(PassRefPtr<HTMLTableElement> table)
152     : HTMLCollection(table, OtherCollection, 0)
153 {
154 }
155
156 PassRefPtr<HTMLTableRowsCollection> HTMLTableRowsCollection::create(PassRefPtr<HTMLTableElement> table)
157 {
158     return adoptRef(new HTMLTableRowsCollection(table));
159 }
160
161 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 }