recursive_plugin_provider.cpp
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00001 /*
00002  * Copyright (c) 2011, Dirk Thomas, TU Darmstadt
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  *
00009  *   * Redistributions of source code must retain the above copyright
00010  *     notice, this list of conditions and the following disclaimer.
00011  *   * Redistributions in binary form must reproduce the above
00012  *     copyright notice, this list of conditions and the following
00013  *     disclaimer in the documentation and/or other materials provided
00014  *     with the distribution.
00015  *   * Neither the name of the TU Darmstadt nor the names of its
00016  *     contributors may be used to endorse or promote products derived
00017  *     from this software without specific prior written permission.
00018  *
00019  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
00020  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00021  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
00022  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
00023  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
00024  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
00025  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
00026  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
00027  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00028  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
00029  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
00030  * POSSIBILITY OF SUCH DAMAGE.
00031  */
00032 
00033 #include <qt_gui_cpp/recursive_plugin_provider.h>
00034 
00035 #include <stdexcept>
00036 
00037 namespace qt_gui_cpp {
00038 
00039 RecursivePluginProvider::RecursivePluginProvider(RosPluginlibPluginProvider_ForPluginProviders* plugin_provider)
00040   : CompositePluginProvider()
00041   , plugin_provider_(plugin_provider)
00042 {}
00043 
00044 RecursivePluginProvider::~RecursivePluginProvider()
00045 {
00046   delete plugin_provider_;
00047 }
00048 
00049 QMap<QString, QString> RecursivePluginProvider::discover()
00050 {
00051   // discover plugins, which are providers themselves
00052   QList<PluginDescriptor*> descriptors = plugin_provider_->discover_descriptors();
00053   QList<QString> plugin_ids;
00054   for (QList<PluginDescriptor*>::iterator it = descriptors.begin(); it != descriptors.end(); it++)
00055   {
00056     PluginDescriptor* descriptor = *it;
00057     plugin_ids.append(descriptor->pluginId());
00058     delete descriptor;
00059   }
00060 
00061   // instantiate plugins
00062   QList<PluginProvider*> providers;
00063   for (QList<QString>::iterator it = plugin_ids.begin(); it != plugin_ids.end(); it++)
00064   {
00065     try
00066     {
00067       // pass NULL as PluginContext for PluginProviders
00068       PluginProvider* instance = plugin_provider_->load_explicit_type(*it, 0);
00069       if (instance == 0)
00070       {
00071         throw std::runtime_error("load returned None");
00072       }
00073       providers.append(instance);
00074     }
00075     catch (...)
00076     {
00077       qCritical("RecursivePluginProvider.discover() loading plugin '%s' failed", it->toStdString().c_str());
00078     }
00079   }
00080 
00081   // delegate discovery through instantiated plugin providers to base class
00082   set_plugin_providers(providers);
00083   return CompositePluginProvider::discover();
00084 }
00085 
00086 } // namespace


qt_gui_cpp
Author(s): Dirk Thomas
autogenerated on Fri Jan 3 2014 11:44:04