src/hbutils/document/hbdocumentloader_p.cpp
changeset 0 16d8024aca5e
child 1 f7ac710697a9
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hbutils/document/hbdocumentloader_p.cpp	Mon Apr 19 14:02:13 2010 +0300
@@ -0,0 +1,232 @@
+/****************************************************************************
+**
+** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (developer.feedback@nokia.com)
+**
+** This file is part of the HbUtils module of the UI Extensions for Mobile.
+**
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this file.
+** Please review the following information to ensure the GNU Lesser General
+** Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at developer.feedback@nokia.com.
+**
+****************************************************************************/
+
+#include "hbdocumentloader_p.h"
+#include "hbdocumentloaderactions_p.h"
+#include "hbdocumentloadersyntax_p.h"
+#include "hbdocumentloader.h"
+
+#include <QGraphicsWidget>
+
+#include <QCoreApplication>
+#include <QDir>
+#include <QPluginLoader>
+#include "hbdocumentloaderplugin.h"
+#include <hbmainwindow.h>
+#include <hbinstance.h>
+
+/*
+    \class HbDocumentLoaderPrivate
+    \internal
+    \proto
+*/
+
+
+HbDocumentLoaderPrivate::HbDocumentLoaderPrivate(const HbMainWindow *window)
+: q_ptr(0)
+{
+    actions = new HbDocumentLoaderActions(this);
+    syntax = new HbDocumentLoaderSyntax(actions, window);
+    pluginManager = new HbDocumentLoaderPluginManager;
+}
+
+HbDocumentLoaderPrivate::~HbDocumentLoaderPrivate()
+{
+    delete pluginManager;
+    delete syntax;
+    delete actions;
+}
+
+bool HbDocumentLoaderPrivate::load( QIODevice *device, const QString &section )
+{
+    return syntax->load( device, section );
+}
+
+QList<QObject *> HbDocumentLoaderPrivate::takeAll()
+{
+    return actions->takeAll();
+}
+
+QGraphicsWidget* HbDocumentLoaderPrivate::findWidget(const QString &name) const
+{
+    return actions->findWidget( name );
+}
+
+QObject* HbDocumentLoaderPrivate::findObject(const QString &name) const
+{
+    return actions->findObject( name );
+}
+
+
+QObject *HbDocumentLoaderPrivate::lookUp(const QString& type, const QString &name, const QString &plugin)
+{
+    if ( plugin.isEmpty() ) {
+        return q_ptr->createObject( type, name );
+    } else {
+        QObject *object = pluginManager->lookUp( type, name, plugin );
+        if ( !object ) {
+            // use factory loader for fallback
+            object = q_ptr->createObject( type, name );
+        }
+        return object;
+    }
+}
+
+void HbDocumentLoaderPrivate::reset()
+{
+    actions->reset();
+}
+
+bool HbDocumentLoaderPrivate::setObjectTree( QList<QObject *> roots )
+{
+    return actions->setObjectTree( roots );
+}
+
+QString HbDocumentLoaderPrivate::version()
+{
+    return HbDocumentLoaderSyntax::version();
+}
+
+
+HbDocumentLoaderPluginManager::HbDocumentLoaderPluginManager()
+{
+}
+
+HbDocumentLoaderPluginManager::~HbDocumentLoaderPluginManager()
+{
+    while ( mPlugins.count() ) {
+        QPluginLoader *loader = mPlugins.at(0);
+        mPlugins.removeAt( 0 );
+        //loader->unload();
+        delete loader;
+    }
+}
+
+QStringList HbDocumentLoaderPluginManager::pluginPathList() const
+{
+    return hbInstance->libraryPaths();
+}
+
+QString HbDocumentLoaderPluginManager::pluginFileNameFilter() const
+{
+#if defined(Q_OS_LINUX)
+    return QString("*.so");
+#elif defined(Q_OS_MAC)
+    return QString("*.dylib");
+#elif defined(Q_OS_WIN32)
+    return QString("*plugin.dll");
+#else
+    return QString("*.qtplugin");
+#endif
+}
+
+void HbDocumentLoaderPluginManager::scanPlugins()
+{
+    const QStringList pathList = pluginPathList();
+    const QString fileNameFilter = pluginFileNameFilter();
+
+    foreach (const QString &path, pathList) {
+        QDir pluginDir(path, fileNameFilter, QDir::Unsorted, QDir::Files | QDir::Readable);
+
+        foreach (const QString &fileName, pluginDir.entryList()) {
+            QPluginLoader *loader = new QPluginLoader(pluginDir.absoluteFilePath(fileName));
+            QObject *pluginInstance = loader->instance();
+
+            if (pluginInstance) {
+                    HbDocumentLoaderPlugin *plugin =
+                        qobject_cast<HbDocumentLoaderPlugin*>(pluginInstance);
+                // plugin found. Call function handle it.
+                if (plugin) {
+                    mPlugins.append( loader );
+                    continue;
+                }
+                loader->unload();
+            }
+            delete loader;
+        }
+    }
+}
+
+QObject *HbDocumentLoaderPluginManager::lookUp(const QString& type, const QString &name, const QString &plugin)
+{
+    QObject *result = 0;
+    QPluginLoader *loader = lookUpPlugin( plugin );
+    if ( loader ) {
+        result = qobject_cast<HbDocumentLoaderPlugin*>(loader->instance())->createObject( type, name );
+    } else {
+        HB_DOCUMENTLOADER_PRINT( QString( "Cannot find plug-in: " ) + plugin );
+    }
+    return result;
+}
+
+QPluginLoader *HbDocumentLoaderPluginManager::lookUpPlugin( const QString &plugin )
+{
+    // check the exising plug-ins
+    foreach( QPluginLoader *loader, mPlugins ) {
+        const QFileInfo fileInfo( loader->fileName() );
+        QString compareName;
+#ifdef Q_OS_LINUX
+        compareName.append( "lib" );
+#endif
+        compareName.append( plugin );
+        if ( fileInfo.baseName() == compareName ) {
+            return loader;
+        }
+    }
+
+    // not found -> try to find it.
+    const QStringList pathList = pluginPathList();
+    QString fileNameFilter;
+#ifdef Q_OS_LINUX
+    fileNameFilter.append( "lib" );
+#endif
+    fileNameFilter.append( plugin );
+    fileNameFilter.append( "*" );
+
+    foreach (const QString &path, pathList) {
+        QDir pluginDir(path, fileNameFilter, QDir::Unsorted, QDir::Files | QDir::Readable);
+
+        foreach (const QString &fileName, pluginDir.entryList()) {
+
+            QPluginLoader *loader = new QPluginLoader(pluginDir.absoluteFilePath(fileName));
+            QObject *pluginInstance = loader->instance();
+
+            if (pluginInstance) {
+                HbDocumentLoaderPlugin *plugin =
+                    qobject_cast<HbDocumentLoaderPlugin*>(pluginInstance);
+                if (plugin) {
+                    mPlugins.append( loader );
+                    return loader;
+                } else {
+                    loader->unload();
+                }
+            }
+        }
+    }
+    return 0;
+}
+
+// end of file
+