1 /****************************************************************************

     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the Qt Mobility Components.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

    27 **

    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

    31 **

    32 **

    33 **

    34 **

    35 **

    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #include "gconflayer_linux_p.h"

    43 #include <QVariant>

    44 #include <GConfItem>

    45 

    46 #include <QDebug>

    47 

    48 QTM_BEGIN_NAMESPACE

    49 

    50 Q_GLOBAL_STATIC(GConfLayer, gConfLayer);

    51 QVALUESPACE_AUTO_INSTALL_LAYER(GConfLayer);

    52 

    53 GConfLayer::GConfLayer()

    54 {

    55 }

    56 

    57 GConfLayer::~GConfLayer()

    58 {

    59     QMutableHashIterator<QString, GConfHandle *> i(m_handles);

    60     while (i.hasNext()) {

    61         i.next();

    62 

    63         removeHandle(Handle(i.value()));

    64     }

    65 }

    66 

    67 QString GConfLayer::name()

    68 {

    69     return QLatin1String("GConf Layer");

    70 }

    71 

    72 QUuid GConfLayer::id()

    73 {

    74     return QVALUESPACE_GCONF_LAYER;

    75 }

    76 

    77 unsigned int GConfLayer::order()

    78 {

    79     return 0;

    80 }

    81 

    82 QValueSpace::LayerOptions GConfLayer::layerOptions() const

    83 {

    84     return QValueSpace::PermanentLayer |

    85         QValueSpace::WritableLayer;

    86 }

    87 

    88 GConfLayer *GConfLayer::instance()

    89 {

    90     return gConfLayer();

    91 }

    92 

    93 bool GConfLayer::startup(Type /*type*/)

    94 {

    95     return true;

    96 }

    97 

    98 bool GConfLayer::value(Handle handle, QVariant *data)

    99 {

   100     GConfHandle *sh = gConfHandle(handle);

   101     if (!sh)

   102         return false;

   103 

   104     return value(InvalidHandle, sh->path, data);

   105 }

   106 

   107 bool GConfLayer::value(Handle handle, const QString &subPath, QVariant *data)

   108 {

   109     if (handle != InvalidHandle && !gConfHandle(handle))

   110         return false;

   111 

   112     QString path(subPath);

   113     while (path.endsWith(QLatin1Char('/')))

   114         path.chop(1);

   115     if (handle != InvalidHandle)

   116         while (path.startsWith(QLatin1Char('/')))

   117             path = path.mid(1);

   118     int index = path.lastIndexOf(QLatin1Char('/'), -1);

   119 

   120     bool createdHandle = false;

   121 

   122     QString value;

   123     if (index == -1) {

   124         value = path;

   125     } else {

   126         // want a value that is in a sub path under handle

   127         value = path.mid(index + 1);

   128         path.truncate(index);

   129 

   130         handle = item(handle, path);

   131         createdHandle = true;

   132     }

   133 

   134     GConfHandle *sh = gConfHandle(handle);

   135     if (!sh)

   136         return false;

   137 

   138     QString fullPath(sh->path);

   139     if (fullPath != QLatin1String("/"))

   140         fullPath.append(QLatin1Char('/'));

   141 

   142     fullPath.append(value);

   143 

   144     qDebug() << "Read value from" << fullPath;

   145     GConfItem gconfItem(fullPath);

   146     *data = gconfItem.value();

   147     qDebug() << "*data = " << *data;

   148 

   149     if (createdHandle)

   150         removeHandle(handle);

   151 

   152     return data->isValid();

   153 }

   154 

   155 QSet<QString> GConfLayer::children(Handle handle)

   156 {

   157     GConfHandle *sh = gConfHandle(handle);

   158     if (!sh)

   159         return QSet<QString>();

   160 

   161     qDebug() << "Get children from" << sh->path;

   162     GConfItem gconfItem(sh->path);

   163 

   164     QSet<QString> ret;

   165     foreach (QString child, gconfItem.listEntries() + gconfItem.listDirs()) {

   166         int index = child.lastIndexOf(QLatin1Char('/'), -1);

   167         ret += child.mid(index + 1);

   168         qDebug() << "found" << child.mid(index + 1);

   169     }

   170 

   171     return ret;

   172 }

   173 

   174 QAbstractValueSpaceLayer::Handle GConfLayer::item(Handle parent, const QString &path)

   175 {

   176     QString fullPath;

   177 

   178     // Fail on invalid path.

   179     if (path.isEmpty() || path.contains(QLatin1String("//")))

   180         return InvalidHandle;

   181 

   182     if (parent == InvalidHandle) {

   183         fullPath = path;

   184     } else {

   185         GConfHandle *sh = gConfHandle(parent);

   186         if (!sh)

   187             return InvalidHandle;

   188 

   189         if (path == QLatin1String("/")) {

   190             fullPath = sh->path;

   191         } else if (sh->path.endsWith(QLatin1Char('/')) && path.startsWith(QLatin1Char('/')))

   192             fullPath = sh->path + path.mid(1);

   193         else if (!sh->path.endsWith(QLatin1Char('/')) && !path.startsWith(QLatin1Char('/')))

   194             fullPath = sh->path + QLatin1Char('/') + path;

   195         else

   196             fullPath = sh->path + path;

   197     }

   198 

   199     if (m_handles.contains(fullPath)) {

   200         GConfHandle *sh = m_handles.value(fullPath);

   201         ++sh->refCount;

   202         return Handle(sh);

   203     }

   204 

   205     // Create a new handle for path

   206     GConfHandle *sh = new GConfHandle(fullPath);

   207     m_handles.insert(fullPath, sh);

   208 

   209     return Handle(sh);

   210 }

   211 

   212 void GConfLayer::setProperty(Handle handle, Properties properties)

   213 {

   214     GConfHandle *sh = gConfHandle(handle);

   215     if (!sh)

   216         return;

   217 

   218     if (properties & QAbstractValueSpaceLayer::Publish) {

   219         qDebug() << "TODO: Start monitoring (child) items from" << sh->path;

   220     } else {

   221         qDebug() << "TODO: Stop monitoring (child) items from" << sh->path;

   222     }

   223 

   224 }

   225 

   226 void GConfLayer::removeHandle(Handle handle)

   227 {

   228     GConfHandle *sh = gConfHandle(handle);

   229     if (!sh)

   230         return;

   231 

   232     if (--sh->refCount)

   233         return;

   234 

   235     m_handles.remove(sh->path);

   236 

   237     delete sh;

   238 }

   239 

   240 bool GConfLayer::setValue(QValueSpacePublisher */*creator*/,

   241                                     Handle handle,

   242                                     const QString &subPath,

   243                                     const QVariant &data)

   244 {

   245     GConfHandle *sh = gConfHandle(handle);

   246     if (!sh)

   247         return false;

   248 

   249     QString path(subPath);

   250     while (path.endsWith(QLatin1Char('/')))

   251         path.chop(1);

   252 

   253     int index = path.lastIndexOf(QLatin1Char('/'), -1);

   254 

   255     bool createdHandle = false;

   256 

   257     QString value;

   258     if (index == -1) {

   259         value = path;

   260     } else {

   261         // want a value that is in a sub path under handle

   262         value = path.mid(index + 1);

   263         path.truncate(index);

   264 

   265         if (path.isEmpty())

   266             path.append(QLatin1Char('/'));

   267 

   268         sh = gConfHandle(item(Handle(sh), path));

   269         createdHandle = true;

   270     }

   271 

   272     QString fullPath(sh->path);

   273     if (fullPath != QLatin1String("/"))

   274         fullPath.append(QLatin1Char('/'));

   275 

   276     fullPath.append(value);

   277 

   278 

   279     qDebug() << "Write value" << data << "to" << fullPath;

   280     GConfItem gconfItem(fullPath);

   281     gconfItem.set(data);

   282 

   283     if (createdHandle)

   284         removeHandle(Handle(sh));

   285     return true;    //TODO: How to check whether set was ok?

   286 }

   287 

   288 void GConfLayer::sync()

   289 {

   290     //Not needed

   291 }

   292 

   293 bool GConfLayer::removeSubTree(QValueSpacePublisher * /*creator*/, Handle /*handle*/)

   294 {

   295     //Not needed

   296     return false;

   297 }

   298 

   299 bool GConfLayer::removeValue(QValueSpacePublisher */*creator*/,

   300     Handle handle,

   301     const QString &subPath)

   302 {

   303     GConfHandle *sh = gConfHandle(handle);

   304     if (!sh)

   305         return false;

   306 

   307     QString path(subPath);

   308     while (path.endsWith(QLatin1Char('/')))

   309         path.chop(1);

   310 

   311     int index = path.lastIndexOf(QLatin1Char('/'), -1);

   312 

   313     bool createdHandle = false;

   314 

   315     QString value;

   316     if (index == -1) {

   317         value = path;

   318     } else {

   319         // want a value that is in a sub path under handle

   320         value = path.mid(index + 1);

   321         path.truncate(index);

   322 

   323         if (path.isEmpty())

   324             path.append(QLatin1Char('/'));

   325 

   326         sh = gConfHandle(item(Handle(sh), path));

   327         createdHandle = true;

   328     }

   329 

   330     QString fullPath(sh->path);

   331     if (fullPath != QLatin1String("/"))

   332         fullPath.append(QLatin1Char('/'));

   333 

   334     fullPath.append(value);

   335 

   336     qDebug() << "TODO: Remove value from" << fullPath;

   337     GConfItem gconfItem(fullPath);

   338     gconfItem.unset();

   339 

   340     if (createdHandle)

   341         removeHandle(Handle(sh));

   342 

   343     return true;    //TODO: How to check whether unset was ok?

   344 }

   345 

   346 void GConfLayer::addWatch(QValueSpacePublisher *, Handle)

   347 {

   348     //Not needed

   349 }

   350 

   351 void GConfLayer::removeWatches(QValueSpacePublisher *, Handle)

   352 {

   353     //Not needed

   354 }

   355 

   356 bool GConfLayer::supportsInterestNotification() const

   357 {

   358     return false;

   359 }

   360 

   361 bool GConfLayer::notifyInterest(Handle, bool)

   362 {

   363     //Not needed

   364     return false;

   365 }

   366 

   367 #include "moc_gconflayer_linux_p.cpp"

   368 

   369 QTM_END_NAMESPACE