1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is Mozilla Communicator client code.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Netscape Communications Corporation.
19 : * Portions created by the Initial Developer are Copyright (C) 1998
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : * Chris Waterson <waterson@netscape.com>
24 : * Jan Varga <varga@ku.sk>
25 : * Nate Nielsen <nielsen@memberwebs.com>
26 : *
27 : * Alternatively, the contents of this file may be used under the terms of
28 : * either of the GNU General Public License Version 2 or later (the "GPL"),
29 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
30 : * in which case the provisions of the GPL or the LGPL are applicable instead
31 : * of those above. If you wish to allow use of your version of this file only
32 : * under the terms of either the GPL or the LGPL, and not to allow others to
33 : * use your version of this file under the terms of the MPL, indicate your
34 : * decision by deleting the provisions above and replace them with the notice
35 : * and other provisions required by the GPL or the LGPL. If you do not delete
36 : * the provisions above, a recipient may use your version of this file under
37 : * the terms of any one of the MPL, the GPL or the LGPL.
38 : *
39 : * ***** END LICENSE BLOCK ***** */
40 :
41 : #include "nsReadableUtils.h"
42 : #include "nsTreeUtils.h"
43 : #include "nsChildIterator.h"
44 : #include "nsCRT.h"
45 : #include "nsIAtom.h"
46 : #include "nsINameSpaceManager.h"
47 : #include "nsGkAtoms.h"
48 : #include "nsINodeInfo.h"
49 :
50 : nsresult
51 0 : nsTreeUtils::TokenizeProperties(const nsAString& aProperties, nsISupportsArray* aPropertiesArray)
52 : {
53 0 : NS_PRECONDITION(aPropertiesArray != nsnull, "null ptr");
54 0 : if (! aPropertiesArray)
55 0 : return NS_ERROR_NULL_POINTER;
56 :
57 0 : nsAString::const_iterator end;
58 0 : aProperties.EndReading(end);
59 :
60 0 : nsAString::const_iterator iter;
61 0 : aProperties.BeginReading(iter);
62 :
63 0 : do {
64 : // Skip whitespace
65 0 : while (iter != end && nsCRT::IsAsciiSpace(*iter))
66 0 : ++iter;
67 :
68 : // If only whitespace, we're done
69 0 : if (iter == end)
70 0 : break;
71 :
72 : // Note the first non-whitespace character
73 0 : nsAString::const_iterator first = iter;
74 :
75 : // Advance to the next whitespace character
76 0 : while (iter != end && ! nsCRT::IsAsciiSpace(*iter))
77 0 : ++iter;
78 :
79 : // XXX this would be nonsensical
80 0 : NS_ASSERTION(iter != first, "eh? something's wrong here");
81 0 : if (iter == first)
82 0 : break;
83 :
84 0 : nsCOMPtr<nsIAtom> atom = do_GetAtom(Substring(first, iter));
85 0 : aPropertiesArray->AppendElement(atom);
86 : } while (iter != end);
87 :
88 0 : return NS_OK;
89 : }
90 :
91 : nsIContent*
92 0 : nsTreeUtils::GetImmediateChild(nsIContent* aContainer, nsIAtom* aTag)
93 : {
94 0 : ChildIterator iter, last;
95 0 : for (ChildIterator::Init(aContainer, &iter, &last); iter != last; ++iter) {
96 0 : nsIContent* child = *iter;
97 :
98 0 : if (child->Tag() == aTag) {
99 0 : return child;
100 : }
101 : }
102 :
103 0 : return nsnull;
104 : }
105 :
106 : nsIContent*
107 0 : nsTreeUtils::GetDescendantChild(nsIContent* aContainer, nsIAtom* aTag)
108 : {
109 0 : ChildIterator iter, last;
110 0 : for (ChildIterator::Init(aContainer, &iter, &last); iter != last; ++iter) {
111 0 : nsIContent* child = *iter;
112 0 : if (child->Tag() == aTag) {
113 0 : return child;
114 : }
115 :
116 0 : child = GetDescendantChild(child, aTag);
117 0 : if (child) {
118 0 : return child;
119 : }
120 : }
121 :
122 0 : return nsnull;
123 : }
124 :
125 : nsresult
126 0 : nsTreeUtils::UpdateSortIndicators(nsIContent* aColumn, const nsAString& aDirection)
127 : {
128 0 : aColumn->SetAttr(kNameSpaceID_None, nsGkAtoms::sortDirection, aDirection, true);
129 0 : aColumn->SetAttr(kNameSpaceID_None, nsGkAtoms::sortActive, NS_LITERAL_STRING("true"), true);
130 :
131 : // Unset sort attribute(s) on the other columns
132 0 : nsCOMPtr<nsIContent> parentContent = aColumn->GetParent();
133 0 : if (parentContent &&
134 : parentContent->NodeInfo()->Equals(nsGkAtoms::treecols,
135 0 : kNameSpaceID_XUL)) {
136 0 : PRUint32 i, numChildren = parentContent->GetChildCount();
137 0 : for (i = 0; i < numChildren; ++i) {
138 0 : nsCOMPtr<nsIContent> childContent = parentContent->GetChildAt(i);
139 :
140 0 : if (childContent &&
141 0 : childContent != aColumn &&
142 : childContent->NodeInfo()->Equals(nsGkAtoms::treecol,
143 0 : kNameSpaceID_XUL)) {
144 0 : childContent->UnsetAttr(kNameSpaceID_None,
145 0 : nsGkAtoms::sortDirection, true);
146 0 : childContent->UnsetAttr(kNameSpaceID_None,
147 0 : nsGkAtoms::sortActive, true);
148 : }
149 : }
150 : }
151 :
152 0 : return NS_OK;
153 : }
154 :
155 : nsresult
156 0 : nsTreeUtils::GetColumnIndex(nsIContent* aColumn, PRInt32* aResult)
157 : {
158 0 : nsIContent* parentContent = aColumn->GetParent();
159 0 : if (parentContent &&
160 : parentContent->NodeInfo()->Equals(nsGkAtoms::treecols,
161 0 : kNameSpaceID_XUL)) {
162 0 : PRUint32 i, numChildren = parentContent->GetChildCount();
163 0 : PRInt32 colIndex = 0;
164 0 : for (i = 0; i < numChildren; ++i) {
165 0 : nsIContent *childContent = parentContent->GetChildAt(i);
166 0 : if (childContent &&
167 : childContent->NodeInfo()->Equals(nsGkAtoms::treecol,
168 0 : kNameSpaceID_XUL)) {
169 0 : if (childContent == aColumn) {
170 0 : *aResult = colIndex;
171 0 : return NS_OK;
172 : }
173 0 : ++colIndex;
174 : }
175 : }
176 : }
177 :
178 0 : *aResult = -1;
179 0 : return NS_OK;
180 : }
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