locationsystemui/locationsysui/possettings/possettingsengine/src/possettingspluginsloader.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/locationsystemui/locationsysui/possettings/possettingsengine/src/possettingspluginsloader.cpp Tue Aug 31 15:37:04 2010 +0300
@@ -0,0 +1,161 @@
+/*
+ * Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+ * All rights reserved.
+ * This component and the accompanying materials are made available
+ * under the terms of "Eclipse Public License v1.0"
+ * which accompanies this distribution, and is available
+ * at the URL "http://www.eclipse.org/legal/epl-v10.html".
+ *
+ * Initial Contributors:
+ * Nokia Corporation - initial contribution.
+ *
+ * Contributors:
+ *
+ * Description: Implementation of the Positioning Settings Plugins Loader class
+ *
+ */
+
+
+#include "possettingspluginsloader.h"
+#include "possettingscrkey.h"
+#include <QDir>
+#include <QFileInfoList>
+#include <QFileInfo>
+#include <QPluginLoader>
+#include <QDebug>
+#include <xqsettingsmanager.h>
+#include <xqsettingskey.h>
+
+
+#ifdef Q_OS_SYMBIAN
+#define PLUGIN_PATH QString("\\resource\\qt\\plugins\\positioningsettings")
+
+#else
+#define PLUGIN_PATH QString("C:\\qt\\plugins\\positioningsettings")
+#endif
+
+// constants
+const int KNoOfDigits = 4;
+
+//---------------------------------------------------------------------
+// PosSettingsPluginsLoader::PosSettingsPluginsLoader
+//
+//---------------------------------------------------------------------
+PosSettingsPluginsLoader::PosSettingsPluginsLoader()
+ {
+ qDebug() << "+ PosSettingsPluginsLoader::PosSettingsPluginsLoader()";
+ qDebug() << "- PosSettingsPluginsLoader::PosSettingsPluginsLoader()";
+ }
+
+//---------------------------------------------------------------------
+// PosSettingsPluginsLoader::~PosSettingsPluginsLoader
+//
+//---------------------------------------------------------------------
+PosSettingsPluginsLoader::~PosSettingsPluginsLoader()
+ {
+ qDebug() << "+ PosSettingsPluginsLoader::~PosSettingsPluginsLoader()";
+ mDllNameList.clear();
+ qDebug() << "- PosSettingsPluginsLoader::~PosSettingsPluginsLoader()";
+ }
+//---------------------------------------------------------------------
+// PosSettingsPluginsLoader::loadPlugins
+//
+//---------------------------------------------------------------------
+QList<PosSettingsAdvInterface*> PosSettingsPluginsLoader::loadPlugins()
+ {
+ qDebug() << "+ PosSettingsPluginsLoader::loadPlugins()";
+ // parse the default cen rep key value which is used to determine
+ // the order of loading the default positioning settings plugins
+ ParseCenRepKey();
+ // List containing the plugins implementing the PositioningSettingsAdvancedInterface
+ QList<PosSettingsAdvInterface*> pluginsList;
+ // Check for the files under the positioningsettings directory
+ QDir pluginsDir(PLUGIN_PATH + QDir::separator());
+ QFileInfoList fileInfoList = pluginsDir.entryInfoList();
+ // check each file in this directory,only if its a dll give it to the
+ // plugin loader
+ foreach ( const QFileInfo &fileInfo, fileInfoList )
+ {
+ QString fileName = fileInfo.absoluteFilePath();
+ qDebug() << "Filename: " << fileName;
+
+ if (!QLibrary::isLibrary(fileName))
+ {
+ continue;
+ }
+ // load the dlls using QPluginLoader
+ QPluginLoader pluginLoader(pluginsDir.absoluteFilePath(fileName));
+ qDebug() << "Plugin Filename: " << pluginsDir.absoluteFilePath(fileName);
+ QObject *plugin = pluginLoader.instance();
+ // Check if the plugin found is an implementation of the
+ // PosSettingsAdvInterface,if yes add it to the plugins list
+
+ if (plugin)
+ {
+ PosSettingsAdvInterface* advancedInterface = qobject_cast<
+ PosSettingsAdvInterface *> (plugin);
+
+ if (advancedInterface)
+ {
+
+ QString dllName = fileInfo.baseName();
+ // check the position into which the plugin needs to be
+ // inserted if it is one of the default plugins
+ for (int i = 0; i < mDllNameList.count(); i++)
+ {
+ if (dllName.compare(mDllNameList[i],Qt::CaseInsensitive) == KErrNone)
+ {
+ pluginsList.insert(i, advancedInterface);
+ break;
+ }
+ }
+ }
+ }
+ }
+ qDebug() << "- PosSettingsPluginsLoader::loadPlugins()";
+ return pluginsList;
+ }
+
+//---------------------------------------------------------------------
+// PosSettingsPluginsLoader::ParseCenRepKey
+//
+//---------------------------------------------------------------------
+void PosSettingsPluginsLoader::ParseCenRepKey()
+ {
+ qDebug() << "+ PosSettingsPluginsLoader::ParseCenRepKey()";
+ // create a XQSettingsManager instance
+ XQSettingsManager* manager = new XQSettingsManager();
+ // create a XQSettingsKey object to read the cenrep key value
+ XQSettingsKey cenrepKey(XQSettingsKey::TargetCentralRepository,
+ KCRUidPositioningSettings.iUid, KPositioningSettingsPlugins);
+ // read the cenrep key value
+ QVariant key(manager->readItemValue(cenrepKey,XQSettingsManager::TypeString));
+ // convert the key value to string
+ QString keyStringValue = key.toString();
+ // if the length of default value is less than 4 digits then return
+ if (keyStringValue.size() < KNoOfDigits)
+ {
+ qDebug() << "- PosSettingsPluginsLoader::ParseCenRepKey()";
+ return;
+ }
+ // get the count of the number of plugin dlls
+ int dllCount = keyStringValue.left(KNoOfDigits).toInt();
+ // initialise current index to 4
+ int currentIndex = KNoOfDigits;
+ // extract the name of each of the dll from the cenrep key value
+ for (int i = 0; i < dllCount; i++)
+ {
+ // extract length of dll name
+ int length = keyStringValue.mid(currentIndex, KNoOfDigits).toInt();
+ // increment the current index value
+ currentIndex += KNoOfDigits;
+ // get the dll name
+ QString dllName = keyStringValue.mid(currentIndex, length);
+ // append to list of dll names
+ mDllNameList.append(dllName);
+ // increment the value of currentIndex by length of name
+ currentIndex += length;
+ }
+ qDebug() << "- PosSettingsPluginsLoader::ParseCenRepKey()";
+ }
+