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(QObject* discovery_data) 00050 { 00051 // discover plugins, which are providers themselves 00052 QList<PluginDescriptor*> descriptors = plugin_provider_->discover_descriptors(discovery_data); 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(discovery_data); 00084 } 00085 00086 } // namespace